) => {\n this.props.onReset?.(...args)\n this.reset()\n }\n\n reset() {\n this.setState(initialState)\n }\n\n componentDidCatch(error: Error, info: React.ErrorInfo) {\n this.props.onError?.(error, info)\n }\n\n componentDidUpdate(\n prevProps: ErrorBoundaryProps,\n prevState: ErrorBoundaryState,\n ) {\n const {error} = this.state\n const {resetKeys} = this.props\n\n // There's an edge case where if the thing that triggered the error\n // happens to *also* be in the resetKeys array, we'd end up resetting\n // the error boundary immediately. This would likely trigger a second\n // error to be thrown.\n // So we make sure that we don't check the resetKeys on the first call\n // of cDU after the error is set\n\n if (\n error !== null &&\n prevState.error !== null &&\n changedArray(prevProps.resetKeys, resetKeys)\n ) {\n this.props.onResetKeysChange?.(prevProps.resetKeys, resetKeys)\n this.reset()\n }\n }\n\n render() {\n const {error} = this.state\n\n const {fallbackRender, FallbackComponent, fallback} = this.props\n\n if (error !== null) {\n const props = {\n error,\n resetErrorBoundary: this.resetErrorBoundary,\n }\n if (React.isValidElement(fallback)) {\n return fallback\n } else if (typeof fallbackRender === 'function') {\n return fallbackRender(props)\n } else if (FallbackComponent) {\n return (\n Component: React.ComponentType
,\n errorBoundaryProps: ErrorBoundaryProps,\n): React.ComponentType
{\n const Wrapped: React.ComponentType
= props => {\n return (\n \n \n )\n }\n\n // Format for display in DevTools\n const name = Component.displayName || Component.name || 'Unknown'\n Wrapped.displayName = `withErrorBoundary(${name})`\n\n return Wrapped\n}\n\nfunction useErrorHandler(givenError?: unknown): (error: unknown) => void {\n const [error, setError] = React.useState(null)\n if (givenError != null) throw givenError\n if (error != null) throw error\n return setError\n}\n\nexport {ErrorBoundary, withErrorBoundary, useErrorHandler}\nexport type {\n FallbackProps,\n ErrorBoundaryPropsWithComponent,\n ErrorBoundaryPropsWithRender,\n ErrorBoundaryPropsWithFallback,\n ErrorBoundaryProps,\n}\n\n/*\neslint\n @typescript-eslint/sort-type-union-intersection-members: \"off\",\n @typescript-eslint/no-throw-literal: \"off\",\n @typescript-eslint/prefer-nullish-coalescing: \"off\"\n*/\n","/** @license React v16.13.1\n * react-is.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';var b=\"function\"===typeof Symbol&&Symbol.for,c=b?Symbol.for(\"react.element\"):60103,d=b?Symbol.for(\"react.portal\"):60106,e=b?Symbol.for(\"react.fragment\"):60107,f=b?Symbol.for(\"react.strict_mode\"):60108,g=b?Symbol.for(\"react.profiler\"):60114,h=b?Symbol.for(\"react.provider\"):60109,k=b?Symbol.for(\"react.context\"):60110,l=b?Symbol.for(\"react.async_mode\"):60111,m=b?Symbol.for(\"react.concurrent_mode\"):60111,n=b?Symbol.for(\"react.forward_ref\"):60112,p=b?Symbol.for(\"react.suspense\"):60113,q=b?\nSymbol.for(\"react.suspense_list\"):60120,r=b?Symbol.for(\"react.memo\"):60115,t=b?Symbol.for(\"react.lazy\"):60116,v=b?Symbol.for(\"react.block\"):60121,w=b?Symbol.for(\"react.fundamental\"):60117,x=b?Symbol.for(\"react.responder\"):60118,y=b?Symbol.for(\"react.scope\"):60119;\nfunction z(a){if(\"object\"===typeof a&&null!==a){var u=a.$$typeof;switch(u){case c:switch(a=a.type,a){case l:case m:case e:case g:case f:case p:return a;default:switch(a=a&&a.$$typeof,a){case k:case n:case t:case r:case h:return a;default:return u}}case d:return u}}}function A(a){return z(a)===m}exports.AsyncMode=l;exports.ConcurrentMode=m;exports.ContextConsumer=k;exports.ContextProvider=h;exports.Element=c;exports.ForwardRef=n;exports.Fragment=e;exports.Lazy=t;exports.Memo=r;exports.Portal=d;\nexports.Profiler=g;exports.StrictMode=f;exports.Suspense=p;exports.isAsyncMode=function(a){return A(a)||z(a)===l};exports.isConcurrentMode=A;exports.isContextConsumer=function(a){return z(a)===k};exports.isContextProvider=function(a){return z(a)===h};exports.isElement=function(a){return\"object\"===typeof a&&null!==a&&a.$$typeof===c};exports.isForwardRef=function(a){return z(a)===n};exports.isFragment=function(a){return z(a)===e};exports.isLazy=function(a){return z(a)===t};\nexports.isMemo=function(a){return z(a)===r};exports.isPortal=function(a){return z(a)===d};exports.isProfiler=function(a){return z(a)===g};exports.isStrictMode=function(a){return z(a)===f};exports.isSuspense=function(a){return z(a)===p};\nexports.isValidElementType=function(a){return\"string\"===typeof a||\"function\"===typeof a||a===e||a===m||a===g||a===f||a===p||a===q||\"object\"===typeof a&&null!==a&&(a.$$typeof===t||a.$$typeof===r||a.$$typeof===h||a.$$typeof===k||a.$$typeof===n||a.$$typeof===w||a.$$typeof===x||a.$$typeof===y||a.$$typeof===v)};exports.typeOf=z;\n","'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n module.exports = require('./cjs/react-is.production.min.js');\n} else {\n module.exports = require('./cjs/react-is.development.js');\n}\n","import createResizeDetector from 'element-resize-detector'\n\nconst instances = {}\n\n// Lazily require to not cause bug\n// https://github.com/ctrlplusb/react-sizeme/issues/6\nfunction resizeDetector(strategy = 'scroll') {\n if (!instances[strategy]) {\n instances[strategy] = createResizeDetector({\n strategy,\n })\n }\n\n return instances[strategy]\n}\n\nexport default resizeDetector\n","/* eslint-disable react/no-multi-comp */\n/* eslint-disable react/prop-types */\n/* eslint-disable react/require-default-props */\n/* eslint-disable react/no-find-dom-node */\n\nimport React, { Children, Component } from 'react'\nimport ReactDOM from 'react-dom'\nimport invariant from 'invariant'\nimport { debounce, throttle } from 'throttle-debounce'\nimport resizeDetector from './resize-detector'\n\nconst errMsg =\n 'react-sizeme: an error occurred whilst stopping to listen to node size changes'\n\nconst defaultConfig = {\n monitorWidth: true,\n monitorHeight: false,\n refreshRate: 16,\n refreshMode: 'throttle',\n noPlaceholder: false,\n resizeDetectorStrategy: 'scroll',\n}\n\nfunction getDisplayName(WrappedComponent) {\n return WrappedComponent.displayName || WrappedComponent.name || 'Component'\n}\n\n/**\n * This is a utility wrapper component that will allow our higher order\n * component to get a ref handle on our wrapped components html.\n * @see https://gist.github.com/jimfb/32b587ee6177665fb4cf\n */\nclass ReferenceWrapper extends Component {\n static displayName = 'SizeMeReferenceWrapper'\n\n render() {\n return Children.only(this.props.children)\n }\n}\n\nfunction Placeholder({ className, style }) {\n // Lets create the props for the temp element.\n const phProps = {}\n\n // We will use any provided className/style or else make the temp\n // container take the full available space.\n if (!className && !style) {\n phProps.style = { width: '100%', height: '100%' }\n } else {\n if (className) {\n phProps.className = className\n }\n if (style) {\n phProps.style = style\n }\n }\n\n return
\n}\nPlaceholder.displayName = 'SizeMePlaceholder'\n\n/**\n * As we need to maintain a ref on the root node that is rendered within our\n * SizeMe component we need to wrap our entire render in a sub component.\n * Without this, we lose the DOM ref after the placeholder is removed from\n * the render and the actual component is rendered.\n * It took me forever to figure this out, so tread extra careful on this one!\n */\nconst renderWrapper = (WrappedComponent) => {\n function SizeMeRenderer(props) {\n const {\n explicitRef,\n className,\n style,\n size,\n disablePlaceholder,\n onSize,\n ...restProps\n } = props\n\n const noSizeData =\n size == null || (size.width == null && size.height == null)\n\n const renderPlaceholder = noSizeData && !disablePlaceholder\n\n const renderProps = {\n className,\n style,\n }\n\n if (size != null) {\n renderProps.size = size\n }\n\n const toRender = renderPlaceholder ? (\n {toRender} \n }\n\n SizeMeRenderer.displayName = `SizeMeRenderer(${getDisplayName(\n WrappedComponent,\n )})`\n\n return SizeMeRenderer\n}\n\n/**\n * :: config -> Component -> WrappedComponent\n *\n * Higher order component that allows the wrapped component to become aware\n * of it's size, by receiving it as an object within it's props.\n *\n * @param monitorWidth\n * Default true, whether changes in the element's width should be monitored,\n * causing a size property to be broadcast.\n * @param monitorHeight\n * Default false, whether changes in the element's height should be monitored,\n * causing a size property to be broadcast.\n *\n * @return The wrapped component.\n */\nfunction withSize(config = defaultConfig) {\n const {\n monitorWidth = defaultConfig.monitorWidth,\n monitorHeight = defaultConfig.monitorHeight,\n refreshRate = defaultConfig.refreshRate,\n refreshMode = defaultConfig.refreshMode,\n noPlaceholder = defaultConfig.noPlaceholder,\n resizeDetectorStrategy = defaultConfig.resizeDetectorStrategy,\n } = config\n\n invariant(\n monitorWidth || monitorHeight,\n 'You have to monitor at least one of the width or height when using \"sizeMe\"',\n )\n\n invariant(\n refreshRate >= 16,\n \"It is highly recommended that you don't put your refreshRate lower than \" +\n '16 as this may cause layout thrashing.',\n )\n\n invariant(\n refreshMode === 'throttle' || refreshMode === 'debounce',\n 'The refreshMode should have a value of \"throttle\" or \"debounce\"',\n )\n\n const refreshDelayStrategy = refreshMode === 'throttle' ? throttle : debounce\n\n return function WrapComponent(WrappedComponent) {\n const SizeMeRenderWrapper = renderWrapper(WrappedComponent)\n\n class SizeAwareComponent extends React.Component {\n static displayName = `SizeMe(${getDisplayName(WrappedComponent)})`\n\n domEl = null\n\n state = {\n width: undefined,\n height: undefined,\n }\n\n componentDidMount() {\n this.detector = resizeDetector(resizeDetectorStrategy)\n this.determineStrategy(this.props)\n this.handleDOMNode()\n }\n\n componentDidUpdate() {\n this.determineStrategy(this.props)\n this.handleDOMNode()\n }\n\n componentWillUnmount() {\n // Change our size checker to a noop just in case we have some\n // late running events.\n this.hasSizeChanged = () => undefined\n this.checkIfSizeChanged = () => undefined\n this.uninstall()\n }\n\n uninstall = () => {\n if (this.domEl) {\n try {\n this.detector.uninstall(this.domEl)\n } catch (err) {\n // eslint-disable-next-line no-console\n console.warn(errMsg)\n }\n this.domEl = null\n }\n }\n\n determineStrategy = (props) => {\n if (props.onSize) {\n if (!this.callbackState) {\n this.callbackState = {\n ...this.state,\n }\n }\n this.strategy = 'callback'\n } else {\n this.strategy = 'render'\n }\n }\n\n strategisedSetState = (state) => {\n if (this.strategy === 'callback') {\n this.callbackState = state\n this.props.onSize(state)\n }\n this.setState(state)\n }\n\n strategisedGetState = () =>\n this.strategy === 'callback' ? this.callbackState : this.state\n\n handleDOMNode() {\n const found = this.element && ReactDOM.findDOMNode(this.element)\n\n if (!found) {\n // If we previously had a dom node then we need to ensure that\n // we remove any existing listeners to avoid memory leaks.\n this.uninstall()\n return\n }\n\n if (!this.domEl) {\n this.domEl = found\n this.detector.listenTo(this.domEl, this.checkIfSizeChanged)\n } else if (\n (this.domEl.isSameNode && !this.domEl.isSameNode(found)) ||\n this.domEl !== found\n ) {\n this.uninstall()\n this.domEl = found\n this.detector.listenTo(this.domEl, this.checkIfSizeChanged)\n } else {\n // Do nothing 👍\n }\n }\n\n refCallback = (element) => {\n this.element = element\n }\n\n hasSizeChanged = (current, next) => {\n const c = current\n const n = next\n\n return (\n (monitorWidth && c.width !== n.width) ||\n (monitorHeight && c.height !== n.height)\n )\n }\n\n checkIfSizeChanged = refreshDelayStrategy(refreshRate, (el) => {\n const { width, height } = el.getBoundingClientRect()\n\n const next = {\n width: monitorWidth ? width : null,\n height: monitorHeight ? height : null,\n }\n\n if (this.hasSizeChanged(this.strategisedGetState(), next)) {\n this.strategisedSetState(next)\n }\n })\n\n render() {\n const disablePlaceholder =\n withSize.enableSSRBehaviour ||\n withSize.noPlaceholders ||\n noPlaceholder ||\n this.strategy === 'callback'\n\n const size = { ...this.state }\n\n return (\n \n {render({ size: this.state.size })}\n \n )\n }\n}\n","import withSize from './with-size'\nimport SizeMe from './component'\n\nwithSize.SizeMe = SizeMe\nwithSize.withSize = withSize\n\nexport default withSize\n","/**\n * @license React\n * react-jsx-runtime.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n'use strict';var f=require(\"react\"),k=Symbol.for(\"react.element\"),l=Symbol.for(\"react.fragment\"),m=Object.prototype.hasOwnProperty,n=f.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.ReactCurrentOwner,p={key:!0,ref:!0,__self:!0,__source:!0};\nfunction q(c,a,g){var b,d={},e=null,h=null;void 0!==g&&(e=\"\"+g);void 0!==a.key&&(e=\"\"+a.key);void 0!==a.ref&&(h=a.ref);for(b in a)m.call(a,b)&&!p.hasOwnProperty(b)&&(d[b]=a[b]);if(c&&c.defaultProps)for(b in a=c.defaultProps,a)void 0===d[b]&&(d[b]=a[b]);return{$$typeof:k,type:c,key:e,ref:h,props:d,_owner:n.current}}exports.Fragment=l;exports.jsx=q;exports.jsxs=q;\n","/**\n * @license React\n * react.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n'use strict';var l=Symbol.for(\"react.element\"),n=Symbol.for(\"react.portal\"),p=Symbol.for(\"react.fragment\"),q=Symbol.for(\"react.strict_mode\"),r=Symbol.for(\"react.profiler\"),t=Symbol.for(\"react.provider\"),u=Symbol.for(\"react.context\"),v=Symbol.for(\"react.forward_ref\"),w=Symbol.for(\"react.suspense\"),x=Symbol.for(\"react.memo\"),y=Symbol.for(\"react.lazy\"),z=Symbol.iterator;function A(a){if(null===a||\"object\"!==typeof a)return null;a=z&&a[z]||a[\"@@iterator\"];return\"function\"===typeof a?a:null}\nvar B={isMounted:function(){return!1},enqueueForceUpdate:function(){},enqueueReplaceState:function(){},enqueueSetState:function(){}},C=Object.assign,D={};function E(a,b,e){this.props=a;this.context=b;this.refs=D;this.updater=e||B}E.prototype.isReactComponent={};\nE.prototype.setState=function(a,b){if(\"object\"!==typeof a&&\"function\"!==typeof a&&null!=a)throw Error(\"setState(...): takes an object of state variables to update or a function which returns an object of state variables.\");this.updater.enqueueSetState(this,a,b,\"setState\")};E.prototype.forceUpdate=function(a){this.updater.enqueueForceUpdate(this,a,\"forceUpdate\")};function F(){}F.prototype=E.prototype;function G(a,b,e){this.props=a;this.context=b;this.refs=D;this.updater=e||B}var H=G.prototype=new F;\nH.constructor=G;C(H,E.prototype);H.isPureReactComponent=!0;var I=Array.isArray,J=Object.prototype.hasOwnProperty,K={current:null},L={key:!0,ref:!0,__self:!0,__source:!0};\nfunction M(a,b,e){var d,c={},k=null,h=null;if(null!=b)for(d in void 0!==b.ref&&(h=b.ref),void 0!==b.key&&(k=\"\"+b.key),b)J.call(b,d)&&!L.hasOwnProperty(d)&&(c[d]=b[d]);var g=arguments.length-2;if(1===g)c.children=e;else if(1>>1,e=a[d];if(0>>1;dg(C,c))ng(x,C)?(a[d]=x,a[n]=c,d=n):(a[d]=C,a[m]=c,d=m);else if(ng(x,c))a[d]=x,a[n]=c,d=n;else break a}}return b}\nfunction g(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}if(\"object\"===typeof performance&&\"function\"===typeof performance.now){var l=performance;exports.unstable_now=function(){return l.now()}}else{var p=Date,q=p.now();exports.unstable_now=function(){return p.now()-q}}var r=[],t=[],u=1,v=null,y=3,z=!1,A=!1,B=!1,D=\"function\"===typeof setTimeout?setTimeout:null,E=\"function\"===typeof clearTimeout?clearTimeout:null,F=\"undefined\"!==typeof setImmediate?setImmediate:null;\n\"undefined\"!==typeof navigator&&void 0!==navigator.scheduling&&void 0!==navigator.scheduling.isInputPending&&navigator.scheduling.isInputPending.bind(navigator.scheduling);function G(a){for(var b=h(t);null!==b;){if(null===b.callback)k(t);else if(b.startTime<=a)k(t),b.sortIndex=b.expirationTime,f(r,b);else break;b=h(t)}}function H(a){B=!1;G(a);if(!A)if(null!==h(r))A=!0,I(J);else{var b=h(t);null!==b&&K(H,b.startTime-a)}}\nfunction J(a,b){A=!1;B&&(B=!1,E(L),L=-1);z=!0;var c=y;try{G(b);for(v=h(r);null!==v&&(!(v.expirationTime>b)||a&&!M());){var d=v.callback;if(\"function\"===typeof d){v.callback=null;y=v.priorityLevel;var e=d(v.expirationTime<=b);b=exports.unstable_now();\"function\"===typeof e?v.callback=e:v===h(r)&&k(r);G(b)}else k(r);v=h(r)}if(null!==v)var w=!0;else{var m=h(t);null!==m&&K(H,m.startTime-b);w=!1}return w}finally{v=null,y=c,z=!1}}var N=!1,O=null,L=-1,P=5,Q=-1;\nfunction M(){return exports.unstable_now()-Qa||125d?(a.sortIndex=c,f(t,a),null===h(r)&&a===h(t)&&(B?(E(L),L=-1):B=!0,K(H,c-d))):(a.sortIndex=e,f(r,a),A||z||(A=!0,I(J)));return a};\nexports.unstable_shouldYield=M;exports.unstable_wrapCallback=function(a){var b=y;return function(){var c=y;y=b;try{return a.apply(this,arguments)}finally{y=c}}};\n","'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n module.exports = require('./cjs/scheduler.production.min.js');\n} else {\n module.exports = require('./cjs/scheduler.development.js');\n}\n","const ANY = Symbol('SemVer ANY')\n// hoisted class for cyclic dependency\nclass Comparator {\n static get ANY () {\n return ANY\n }\n\n constructor (comp, options) {\n options = parseOptions(options)\n\n if (comp instanceof Comparator) {\n if (comp.loose === !!options.loose) {\n return comp\n } else {\n comp = comp.value\n }\n }\n\n debug('comparator', comp, options)\n this.options = options\n this.loose = !!options.loose\n this.parse(comp)\n\n if (this.semver === ANY) {\n this.value = ''\n } else {\n this.value = this.operator + this.semver.version\n }\n\n debug('comp', this)\n }\n\n parse (comp) {\n const r = this.options.loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]\n const m = comp.match(r)\n\n if (!m) {\n throw new TypeError(`Invalid comparator: ${comp}`)\n }\n\n this.operator = m[1] !== undefined ? m[1] : ''\n if (this.operator === '=') {\n this.operator = ''\n }\n\n // if it literally is just '>' or '' then allow anything.\n if (!m[2]) {\n this.semver = ANY\n } else {\n this.semver = new SemVer(m[2], this.options.loose)\n }\n }\n\n toString () {\n return this.value\n }\n\n test (version) {\n debug('Comparator.test', version, this.options.loose)\n\n if (this.semver === ANY || version === ANY) {\n return true\n }\n\n if (typeof version === 'string') {\n try {\n version = new SemVer(version, this.options)\n } catch (er) {\n return false\n }\n }\n\n return cmp(version, this.operator, this.semver, this.options)\n }\n\n intersects (comp, options) {\n if (!(comp instanceof Comparator)) {\n throw new TypeError('a Comparator is required')\n }\n\n if (!options || typeof options !== 'object') {\n options = {\n loose: !!options,\n includePrerelease: false,\n }\n }\n\n if (this.operator === '') {\n if (this.value === '') {\n return true\n }\n return new Range(comp.value, options).test(this.value)\n } else if (comp.operator === '') {\n if (comp.value === '') {\n return true\n }\n return new Range(this.value, options).test(comp.semver)\n }\n\n const sameDirectionIncreasing =\n (this.operator === '>=' || this.operator === '>') &&\n (comp.operator === '>=' || comp.operator === '>')\n const sameDirectionDecreasing =\n (this.operator === '<=' || this.operator === '<') &&\n (comp.operator === '<=' || comp.operator === '<')\n const sameSemVer = this.semver.version === comp.semver.version\n const differentDirectionsInclusive =\n (this.operator === '>=' || this.operator === '<=') &&\n (comp.operator === '>=' || comp.operator === '<=')\n const oppositeDirectionsLessThan =\n cmp(this.semver, '<', comp.semver, options) &&\n (this.operator === '>=' || this.operator === '>') &&\n (comp.operator === '<=' || comp.operator === '<')\n const oppositeDirectionsGreaterThan =\n cmp(this.semver, '>', comp.semver, options) &&\n (this.operator === '<=' || this.operator === '<') &&\n (comp.operator === '>=' || comp.operator === '>')\n\n return (\n sameDirectionIncreasing ||\n sameDirectionDecreasing ||\n (sameSemVer && differentDirectionsInclusive) ||\n oppositeDirectionsLessThan ||\n oppositeDirectionsGreaterThan\n )\n }\n}\n\nmodule.exports = Comparator\n\nconst parseOptions = require('../internal/parse-options')\nconst { re, t } = require('../internal/re')\nconst cmp = require('../functions/cmp')\nconst debug = require('../internal/debug')\nconst SemVer = require('./semver')\nconst Range = require('./range')\n","// hoisted class for cyclic dependency\nclass Range {\n constructor (range, options) {\n options = parseOptions(options)\n\n if (range instanceof Range) {\n if (\n range.loose === !!options.loose &&\n range.includePrerelease === !!options.includePrerelease\n ) {\n return range\n } else {\n return new Range(range.raw, options)\n }\n }\n\n if (range instanceof Comparator) {\n // just put it in the set and return\n this.raw = range.value\n this.set = [[range]]\n this.format()\n return this\n }\n\n this.options = options\n this.loose = !!options.loose\n this.includePrerelease = !!options.includePrerelease\n\n // First, split based on boolean or ||\n this.raw = range\n this.set = range\n .split('||')\n // map the range to a 2d array of comparators\n .map(r => this.parseRange(r.trim()))\n // throw out any comparator lists that are empty\n // this generally means that it was not a valid range, which is allowed\n // in loose mode, but will still throw if the WHOLE range is invalid.\n .filter(c => c.length)\n\n if (!this.set.length) {\n throw new TypeError(`Invalid SemVer Range: ${range}`)\n }\n\n // if we have any that are not the null set, throw out null sets.\n if (this.set.length > 1) {\n // keep the first one, in case they're all null sets\n const first = this.set[0]\n this.set = this.set.filter(c => !isNullSet(c[0]))\n if (this.set.length === 0) {\n this.set = [first]\n } else if (this.set.length > 1) {\n // if we have any that are *, then the range is just *\n for (const c of this.set) {\n if (c.length === 1 && isAny(c[0])) {\n this.set = [c]\n break\n }\n }\n }\n }\n\n this.format()\n }\n\n format () {\n this.range = this.set\n .map((comps) => {\n return comps.join(' ').trim()\n })\n .join('||')\n .trim()\n return this.range\n }\n\n toString () {\n return this.range\n }\n\n parseRange (range) {\n range = range.trim()\n\n // memoize range parsing for performance.\n // this is a very hot path, and fully deterministic.\n const memoOpts = Object.keys(this.options).join(',')\n const memoKey = `parseRange:${memoOpts}:${range}`\n const cached = cache.get(memoKey)\n if (cached) {\n return cached\n }\n\n const loose = this.options.loose\n // `1.2.3 - 1.2.4` => `>=1.2.3 <=1.2.4`\n const hr = loose ? re[t.HYPHENRANGELOOSE] : re[t.HYPHENRANGE]\n range = range.replace(hr, hyphenReplace(this.options.includePrerelease))\n debug('hyphen replace', range)\n // `> 1.2.3 < 1.2.5` => `>1.2.3 <1.2.5`\n range = range.replace(re[t.COMPARATORTRIM], comparatorTrimReplace)\n debug('comparator trim', range)\n\n // `~ 1.2.3` => `~1.2.3`\n range = range.replace(re[t.TILDETRIM], tildeTrimReplace)\n\n // `^ 1.2.3` => `^1.2.3`\n range = range.replace(re[t.CARETTRIM], caretTrimReplace)\n\n // normalize spaces\n range = range.split(/\\s+/).join(' ')\n\n // At this point, the range is completely trimmed and\n // ready to be split into comparators.\n\n let rangeList = range\n .split(' ')\n .map(comp => parseComparator(comp, this.options))\n .join(' ')\n .split(/\\s+/)\n // >=0.0.0 is equivalent to *\n .map(comp => replaceGTE0(comp, this.options))\n\n if (loose) {\n // in loose mode, throw out any that are not valid comparators\n rangeList = rangeList.filter(comp => {\n debug('loose invalid filter', comp, this.options)\n return !!comp.match(re[t.COMPARATORLOOSE])\n })\n }\n debug('range list', rangeList)\n\n // if any comparators are the null set, then replace with JUST null set\n // if more than one comparator, remove any * comparators\n // also, don't include the same comparator more than once\n const rangeMap = new Map()\n const comparators = rangeList.map(comp => new Comparator(comp, this.options))\n for (const comp of comparators) {\n if (isNullSet(comp)) {\n return [comp]\n }\n rangeMap.set(comp.value, comp)\n }\n if (rangeMap.size > 1 && rangeMap.has('')) {\n rangeMap.delete('')\n }\n\n const result = [...rangeMap.values()]\n cache.set(memoKey, result)\n return result\n }\n\n intersects (range, options) {\n if (!(range instanceof Range)) {\n throw new TypeError('a Range is required')\n }\n\n return this.set.some((thisComparators) => {\n return (\n isSatisfiable(thisComparators, options) &&\n range.set.some((rangeComparators) => {\n return (\n isSatisfiable(rangeComparators, options) &&\n thisComparators.every((thisComparator) => {\n return rangeComparators.every((rangeComparator) => {\n return thisComparator.intersects(rangeComparator, options)\n })\n })\n )\n })\n )\n })\n }\n\n // if ANY of the sets match ALL of its comparators, then pass\n test (version) {\n if (!version) {\n return false\n }\n\n if (typeof version === 'string') {\n try {\n version = new SemVer(version, this.options)\n } catch (er) {\n return false\n }\n }\n\n for (let i = 0; i < this.set.length; i++) {\n if (testSet(this.set[i], version, this.options)) {\n return true\n }\n }\n return false\n }\n}\nmodule.exports = Range\n\nconst LRU = require('lru-cache')\nconst cache = new LRU({ max: 1000 })\n\nconst parseOptions = require('../internal/parse-options')\nconst Comparator = require('./comparator')\nconst debug = require('../internal/debug')\nconst SemVer = require('./semver')\nconst {\n re,\n t,\n comparatorTrimReplace,\n tildeTrimReplace,\n caretTrimReplace,\n} = require('../internal/re')\n\nconst isNullSet = c => c.value === '<0.0.0-0'\nconst isAny = c => c.value === ''\n\n// take a set of comparators and determine whether there\n// exists a version which can satisfy it\nconst isSatisfiable = (comparators, options) => {\n let result = true\n const remainingComparators = comparators.slice()\n let testComparator = remainingComparators.pop()\n\n while (result && remainingComparators.length) {\n result = remainingComparators.every((otherComparator) => {\n return testComparator.intersects(otherComparator, options)\n })\n\n testComparator = remainingComparators.pop()\n }\n\n return result\n}\n\n// comprised of xranges, tildes, stars, and gtlt's at this point.\n// already replaced the hyphen ranges\n// turn into a set of JUST comparators.\nconst parseComparator = (comp, options) => {\n debug('comp', comp, options)\n comp = replaceCarets(comp, options)\n debug('caret', comp)\n comp = replaceTildes(comp, options)\n debug('tildes', comp)\n comp = replaceXRanges(comp, options)\n debug('xrange', comp)\n comp = replaceStars(comp, options)\n debug('stars', comp)\n return comp\n}\n\nconst isX = id => !id || id.toLowerCase() === 'x' || id === '*'\n\n// ~, ~> --> * (any, kinda silly)\n// ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0 <3.0.0-0\n// ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0 <2.1.0-0\n// ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0 <1.3.0-0\n// ~1.2.3, ~>1.2.3 --> >=1.2.3 <1.3.0-0\n// ~1.2.0, ~>1.2.0 --> >=1.2.0 <1.3.0-0\n// ~0.0.1 --> >=0.0.1 <0.1.0-0\nconst replaceTildes = (comp, options) =>\n comp.trim().split(/\\s+/).map((c) => {\n return replaceTilde(c, options)\n }).join(' ')\n\nconst replaceTilde = (comp, options) => {\n const r = options.loose ? re[t.TILDELOOSE] : re[t.TILDE]\n return comp.replace(r, (_, M, m, p, pr) => {\n debug('tilde', comp, _, M, m, p, pr)\n let ret\n\n if (isX(M)) {\n ret = ''\n } else if (isX(m)) {\n ret = `>=${M}.0.0 <${+M + 1}.0.0-0`\n } else if (isX(p)) {\n // ~1.2 == >=1.2.0 <1.3.0-0\n ret = `>=${M}.${m}.0 <${M}.${+m + 1}.0-0`\n } else if (pr) {\n debug('replaceTilde pr', pr)\n ret = `>=${M}.${m}.${p}-${pr\n } <${M}.${+m + 1}.0-0`\n } else {\n // ~1.2.3 == >=1.2.3 <1.3.0-0\n ret = `>=${M}.${m}.${p\n } <${M}.${+m + 1}.0-0`\n }\n\n debug('tilde return', ret)\n return ret\n })\n}\n\n// ^ --> * (any, kinda silly)\n// ^2, ^2.x, ^2.x.x --> >=2.0.0 <3.0.0-0\n// ^2.0, ^2.0.x --> >=2.0.0 <3.0.0-0\n// ^1.2, ^1.2.x --> >=1.2.0 <2.0.0-0\n// ^1.2.3 --> >=1.2.3 <2.0.0-0\n// ^1.2.0 --> >=1.2.0 <2.0.0-0\n// ^0.0.1 --> >=0.0.1 <0.0.2-0\n// ^0.1.0 --> >=0.1.0 <0.2.0-0\nconst replaceCarets = (comp, options) =>\n comp.trim().split(/\\s+/).map((c) => {\n return replaceCaret(c, options)\n }).join(' ')\n\nconst replaceCaret = (comp, options) => {\n debug('caret', comp, options)\n const r = options.loose ? re[t.CARETLOOSE] : re[t.CARET]\n const z = options.includePrerelease ? '-0' : ''\n return comp.replace(r, (_, M, m, p, pr) => {\n debug('caret', comp, _, M, m, p, pr)\n let ret\n\n if (isX(M)) {\n ret = ''\n } else if (isX(m)) {\n ret = `>=${M}.0.0${z} <${+M + 1}.0.0-0`\n } else if (isX(p)) {\n if (M === '0') {\n ret = `>=${M}.${m}.0${z} <${M}.${+m + 1}.0-0`\n } else {\n ret = `>=${M}.${m}.0${z} <${+M + 1}.0.0-0`\n }\n } else if (pr) {\n debug('replaceCaret pr', pr)\n if (M === '0') {\n if (m === '0') {\n ret = `>=${M}.${m}.${p}-${pr\n } <${M}.${m}.${+p + 1}-0`\n } else {\n ret = `>=${M}.${m}.${p}-${pr\n } <${M}.${+m + 1}.0-0`\n }\n } else {\n ret = `>=${M}.${m}.${p}-${pr\n } <${+M + 1}.0.0-0`\n }\n } else {\n debug('no pr')\n if (M === '0') {\n if (m === '0') {\n ret = `>=${M}.${m}.${p\n }${z} <${M}.${m}.${+p + 1}-0`\n } else {\n ret = `>=${M}.${m}.${p\n }${z} <${M}.${+m + 1}.0-0`\n }\n } else {\n ret = `>=${M}.${m}.${p\n } <${+M + 1}.0.0-0`\n }\n }\n\n debug('caret return', ret)\n return ret\n })\n}\n\nconst replaceXRanges = (comp, options) => {\n debug('replaceXRanges', comp, options)\n return comp.split(/\\s+/).map((c) => {\n return replaceXRange(c, options)\n }).join(' ')\n}\n\nconst replaceXRange = (comp, options) => {\n comp = comp.trim()\n const r = options.loose ? re[t.XRANGELOOSE] : re[t.XRANGE]\n return comp.replace(r, (ret, gtlt, M, m, p, pr) => {\n debug('xRange', comp, ret, gtlt, M, m, p, pr)\n const xM = isX(M)\n const xm = xM || isX(m)\n const xp = xm || isX(p)\n const anyX = xp\n\n if (gtlt === '=' && anyX) {\n gtlt = ''\n }\n\n // if we're including prereleases in the match, then we need\n // to fix this to -0, the lowest possible prerelease value\n pr = options.includePrerelease ? '-0' : ''\n\n if (xM) {\n if (gtlt === '>' || gtlt === '<') {\n // nothing is allowed\n ret = '<0.0.0-0'\n } else {\n // nothing is forbidden\n ret = '*'\n }\n } else if (gtlt && anyX) {\n // we know patch is an x, because we have any x at all.\n // replace X with 0\n if (xm) {\n m = 0\n }\n p = 0\n\n if (gtlt === '>') {\n // >1 => >=2.0.0\n // >1.2 => >=1.3.0\n gtlt = '>='\n if (xm) {\n M = +M + 1\n m = 0\n p = 0\n } else {\n m = +m + 1\n p = 0\n }\n } else if (gtlt === '<=') {\n // <=0.7.x is actually <0.8.0, since any 0.7.x should\n // pass. Similarly, <=7.x is actually <8.0.0, etc.\n gtlt = '<'\n if (xm) {\n M = +M + 1\n } else {\n m = +m + 1\n }\n }\n\n if (gtlt === '<') {\n pr = '-0'\n }\n\n ret = `${gtlt + M}.${m}.${p}${pr}`\n } else if (xm) {\n ret = `>=${M}.0.0${pr} <${+M + 1}.0.0-0`\n } else if (xp) {\n ret = `>=${M}.${m}.0${pr\n } <${M}.${+m + 1}.0-0`\n }\n\n debug('xRange return', ret)\n\n return ret\n })\n}\n\n// Because * is AND-ed with everything else in the comparator,\n// and '' means \"any version\", just remove the *s entirely.\nconst replaceStars = (comp, options) => {\n debug('replaceStars', comp, options)\n // Looseness is ignored here. star is always as loose as it gets!\n return comp.trim().replace(re[t.STAR], '')\n}\n\nconst replaceGTE0 = (comp, options) => {\n debug('replaceGTE0', comp, options)\n return comp.trim()\n .replace(re[options.includePrerelease ? t.GTE0PRE : t.GTE0], '')\n}\n\n// This function is passed to string.replace(re[t.HYPHENRANGE])\n// M, m, patch, prerelease, build\n// 1.2 - 3.4.5 => >=1.2.0 <=3.4.5\n// 1.2.3 - 3.4 => >=1.2.0 <3.5.0-0 Any 3.4.x will do\n// 1.2 - 3.4 => >=1.2.0 <3.5.0-0\nconst hyphenReplace = incPr => ($0,\n from, fM, fm, fp, fpr, fb,\n to, tM, tm, tp, tpr, tb) => {\n if (isX(fM)) {\n from = ''\n } else if (isX(fm)) {\n from = `>=${fM}.0.0${incPr ? '-0' : ''}`\n } else if (isX(fp)) {\n from = `>=${fM}.${fm}.0${incPr ? '-0' : ''}`\n } else if (fpr) {\n from = `>=${from}`\n } else {\n from = `>=${from}${incPr ? '-0' : ''}`\n }\n\n if (isX(tM)) {\n to = ''\n } else if (isX(tm)) {\n to = `<${+tM + 1}.0.0-0`\n } else if (isX(tp)) {\n to = `<${tM}.${+tm + 1}.0-0`\n } else if (tpr) {\n to = `<=${tM}.${tm}.${tp}-${tpr}`\n } else if (incPr) {\n to = `<${tM}.${tm}.${+tp + 1}-0`\n } else {\n to = `<=${to}`\n }\n\n return (`${from} ${to}`).trim()\n}\n\nconst testSet = (set, version, options) => {\n for (let i = 0; i < set.length; i++) {\n if (!set[i].test(version)) {\n return false\n }\n }\n\n if (version.prerelease.length && !options.includePrerelease) {\n // Find the set of versions that are allowed to have prereleases\n // For example, ^1.2.3-pr.1 desugars to >=1.2.3-pr.1 <2.0.0\n // That should allow `1.2.3-pr.2` to pass.\n // However, `1.2.4-alpha.notready` should NOT be allowed,\n // even though it's within the range set by the comparators.\n for (let i = 0; i < set.length; i++) {\n debug(set[i].semver)\n if (set[i].semver === Comparator.ANY) {\n continue\n }\n\n if (set[i].semver.prerelease.length > 0) {\n const allowed = set[i].semver\n if (allowed.major === version.major &&\n allowed.minor === version.minor &&\n allowed.patch === version.patch) {\n return true\n }\n }\n }\n\n // Version has a -pre, but it's not one of the ones we like.\n return false\n }\n\n return true\n}\n","const debug = require('../internal/debug')\nconst { MAX_LENGTH, MAX_SAFE_INTEGER } = require('../internal/constants')\nconst { re, t } = require('../internal/re')\n\nconst parseOptions = require('../internal/parse-options')\nconst { compareIdentifiers } = require('../internal/identifiers')\nclass SemVer {\n constructor (version, options) {\n options = parseOptions(options)\n\n if (version instanceof SemVer) {\n if (version.loose === !!options.loose &&\n version.includePrerelease === !!options.includePrerelease) {\n return version\n } else {\n version = version.version\n }\n } else if (typeof version !== 'string') {\n throw new TypeError(`Invalid Version: ${version}`)\n }\n\n if (version.length > MAX_LENGTH) {\n throw new TypeError(\n `version is longer than ${MAX_LENGTH} characters`\n )\n }\n\n debug('SemVer', version, options)\n this.options = options\n this.loose = !!options.loose\n // this isn't actually relevant for versions, but keep it so that we\n // don't run into trouble passing this.options around.\n this.includePrerelease = !!options.includePrerelease\n\n const m = version.trim().match(options.loose ? re[t.LOOSE] : re[t.FULL])\n\n if (!m) {\n throw new TypeError(`Invalid Version: ${version}`)\n }\n\n this.raw = version\n\n // these are actually numbers\n this.major = +m[1]\n this.minor = +m[2]\n this.patch = +m[3]\n\n if (this.major > MAX_SAFE_INTEGER || this.major < 0) {\n throw new TypeError('Invalid major version')\n }\n\n if (this.minor > MAX_SAFE_INTEGER || this.minor < 0) {\n throw new TypeError('Invalid minor version')\n }\n\n if (this.patch > MAX_SAFE_INTEGER || this.patch < 0) {\n throw new TypeError('Invalid patch version')\n }\n\n // numberify any prerelease numeric ids\n if (!m[4]) {\n this.prerelease = []\n } else {\n this.prerelease = m[4].split('.').map((id) => {\n if (/^[0-9]+$/.test(id)) {\n const num = +id\n if (num >= 0 && num < MAX_SAFE_INTEGER) {\n return num\n }\n }\n return id\n })\n }\n\n this.build = m[5] ? m[5].split('.') : []\n this.format()\n }\n\n format () {\n this.version = `${this.major}.${this.minor}.${this.patch}`\n if (this.prerelease.length) {\n this.version += `-${this.prerelease.join('.')}`\n }\n return this.version\n }\n\n toString () {\n return this.version\n }\n\n compare (other) {\n debug('SemVer.compare', this.version, this.options, other)\n if (!(other instanceof SemVer)) {\n if (typeof other === 'string' && other === this.version) {\n return 0\n }\n other = new SemVer(other, this.options)\n }\n\n if (other.version === this.version) {\n return 0\n }\n\n return this.compareMain(other) || this.comparePre(other)\n }\n\n compareMain (other) {\n if (!(other instanceof SemVer)) {\n other = new SemVer(other, this.options)\n }\n\n return (\n compareIdentifiers(this.major, other.major) ||\n compareIdentifiers(this.minor, other.minor) ||\n compareIdentifiers(this.patch, other.patch)\n )\n }\n\n comparePre (other) {\n if (!(other instanceof SemVer)) {\n other = new SemVer(other, this.options)\n }\n\n // NOT having a prerelease is > having one\n if (this.prerelease.length && !other.prerelease.length) {\n return -1\n } else if (!this.prerelease.length && other.prerelease.length) {\n return 1\n } else if (!this.prerelease.length && !other.prerelease.length) {\n return 0\n }\n\n let i = 0\n do {\n const a = this.prerelease[i]\n const b = other.prerelease[i]\n debug('prerelease compare', i, a, b)\n if (a === undefined && b === undefined) {\n return 0\n } else if (b === undefined) {\n return 1\n } else if (a === undefined) {\n return -1\n } else if (a === b) {\n continue\n } else {\n return compareIdentifiers(a, b)\n }\n } while (++i)\n }\n\n compareBuild (other) {\n if (!(other instanceof SemVer)) {\n other = new SemVer(other, this.options)\n }\n\n let i = 0\n do {\n const a = this.build[i]\n const b = other.build[i]\n debug('prerelease compare', i, a, b)\n if (a === undefined && b === undefined) {\n return 0\n } else if (b === undefined) {\n return 1\n } else if (a === undefined) {\n return -1\n } else if (a === b) {\n continue\n } else {\n return compareIdentifiers(a, b)\n }\n } while (++i)\n }\n\n // preminor will bump the version up to the next minor release, and immediately\n // down to pre-release. premajor and prepatch work the same way.\n inc (release, identifier) {\n switch (release) {\n case 'premajor':\n this.prerelease.length = 0\n this.patch = 0\n this.minor = 0\n this.major++\n this.inc('pre', identifier)\n break\n case 'preminor':\n this.prerelease.length = 0\n this.patch = 0\n this.minor++\n this.inc('pre', identifier)\n break\n case 'prepatch':\n // If this is already a prerelease, it will bump to the next version\n // drop any prereleases that might already exist, since they are not\n // relevant at this point.\n this.prerelease.length = 0\n this.inc('patch', identifier)\n this.inc('pre', identifier)\n break\n // If the input is a non-prerelease version, this acts the same as\n // prepatch.\n case 'prerelease':\n if (this.prerelease.length === 0) {\n this.inc('patch', identifier)\n }\n this.inc('pre', identifier)\n break\n\n case 'major':\n // If this is a pre-major version, bump up to the same major version.\n // Otherwise increment major.\n // 1.0.0-5 bumps to 1.0.0\n // 1.1.0 bumps to 2.0.0\n if (\n this.minor !== 0 ||\n this.patch !== 0 ||\n this.prerelease.length === 0\n ) {\n this.major++\n }\n this.minor = 0\n this.patch = 0\n this.prerelease = []\n break\n case 'minor':\n // If this is a pre-minor version, bump up to the same minor version.\n // Otherwise increment minor.\n // 1.2.0-5 bumps to 1.2.0\n // 1.2.1 bumps to 1.3.0\n if (this.patch !== 0 || this.prerelease.length === 0) {\n this.minor++\n }\n this.patch = 0\n this.prerelease = []\n break\n case 'patch':\n // If this is not a pre-release version, it will increment the patch.\n // If it is a pre-release it will bump up to the same patch version.\n // 1.2.0-5 patches to 1.2.0\n // 1.2.0 patches to 1.2.1\n if (this.prerelease.length === 0) {\n this.patch++\n }\n this.prerelease = []\n break\n // This probably shouldn't be used publicly.\n // 1.0.0 'pre' would become 1.0.0-0 which is the wrong direction.\n case 'pre':\n if (this.prerelease.length === 0) {\n this.prerelease = [0]\n } else {\n let i = this.prerelease.length\n while (--i >= 0) {\n if (typeof this.prerelease[i] === 'number') {\n this.prerelease[i]++\n i = -2\n }\n }\n if (i === -1) {\n // didn't increment anything\n this.prerelease.push(0)\n }\n }\n if (identifier) {\n // 1.2.0-beta.1 bumps to 1.2.0-beta.2,\n // 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0\n if (compareIdentifiers(this.prerelease[0], identifier) === 0) {\n if (isNaN(this.prerelease[1])) {\n this.prerelease = [identifier, 0]\n }\n } else {\n this.prerelease = [identifier, 0]\n }\n }\n break\n\n default:\n throw new Error(`invalid increment argument: ${release}`)\n }\n this.format()\n this.raw = this.version\n return this\n }\n}\n\nmodule.exports = SemVer\n","const parse = require('./parse')\nconst clean = (version, options) => {\n const s = parse(version.trim().replace(/^[=v]+/, ''), options)\n return s ? s.version : null\n}\nmodule.exports = clean\n","const eq = require('./eq')\nconst neq = require('./neq')\nconst gt = require('./gt')\nconst gte = require('./gte')\nconst lt = require('./lt')\nconst lte = require('./lte')\n\nconst cmp = (a, op, b, loose) => {\n switch (op) {\n case '===':\n if (typeof a === 'object') {\n a = a.version\n }\n if (typeof b === 'object') {\n b = b.version\n }\n return a === b\n\n case '!==':\n if (typeof a === 'object') {\n a = a.version\n }\n if (typeof b === 'object') {\n b = b.version\n }\n return a !== b\n\n case '':\n case '=':\n case '==':\n return eq(a, b, loose)\n\n case '!=':\n return neq(a, b, loose)\n\n case '>':\n return gt(a, b, loose)\n\n case '>=':\n return gte(a, b, loose)\n\n case '<':\n return lt(a, b, loose)\n\n case '<=':\n return lte(a, b, loose)\n\n default:\n throw new TypeError(`Invalid operator: ${op}`)\n }\n}\nmodule.exports = cmp\n","const SemVer = require('../classes/semver')\nconst parse = require('./parse')\nconst { re, t } = require('../internal/re')\n\nconst coerce = (version, options) => {\n if (version instanceof SemVer) {\n return version\n }\n\n if (typeof version === 'number') {\n version = String(version)\n }\n\n if (typeof version !== 'string') {\n return null\n }\n\n options = options || {}\n\n let match = null\n if (!options.rtl) {\n match = version.match(re[t.COERCE])\n } else {\n // Find the right-most coercible string that does not share\n // a terminus with a more left-ward coercible string.\n // Eg, '1.2.3.4' wants to coerce '2.3.4', not '3.4' or '4'\n //\n // Walk through the string checking with a /g regexp\n // Manually set the index so as to pick up overlapping matches.\n // Stop when we get a match that ends at the string end, since no\n // coercible string can be more right-ward without the same terminus.\n let next\n while ((next = re[t.COERCERTL].exec(version)) &&\n (!match || match.index + match[0].length !== version.length)\n ) {\n if (!match ||\n next.index + next[0].length !== match.index + match[0].length) {\n match = next\n }\n re[t.COERCERTL].lastIndex = next.index + next[1].length + next[2].length\n }\n // leave it in a clean state\n re[t.COERCERTL].lastIndex = -1\n }\n\n if (match === null) {\n return null\n }\n\n return parse(`${match[2]}.${match[3] || '0'}.${match[4] || '0'}`, options)\n}\nmodule.exports = coerce\n","const SemVer = require('../classes/semver')\nconst compareBuild = (a, b, loose) => {\n const versionA = new SemVer(a, loose)\n const versionB = new SemVer(b, loose)\n return versionA.compare(versionB) || versionA.compareBuild(versionB)\n}\nmodule.exports = compareBuild\n","const compare = require('./compare')\nconst compareLoose = (a, b) => compare(a, b, true)\nmodule.exports = compareLoose\n","const SemVer = require('../classes/semver')\nconst compare = (a, b, loose) =>\n new SemVer(a, loose).compare(new SemVer(b, loose))\n\nmodule.exports = compare\n","const parse = require('./parse')\nconst eq = require('./eq')\n\nconst diff = (version1, version2) => {\n if (eq(version1, version2)) {\n return null\n } else {\n const v1 = parse(version1)\n const v2 = parse(version2)\n const hasPre = v1.prerelease.length || v2.prerelease.length\n const prefix = hasPre ? 'pre' : ''\n const defaultResult = hasPre ? 'prerelease' : ''\n for (const key in v1) {\n if (key === 'major' || key === 'minor' || key === 'patch') {\n if (v1[key] !== v2[key]) {\n return prefix + key\n }\n }\n }\n return defaultResult // may be undefined\n }\n}\nmodule.exports = diff\n","const compare = require('./compare')\nconst eq = (a, b, loose) => compare(a, b, loose) === 0\nmodule.exports = eq\n","const compare = require('./compare')\nconst gt = (a, b, loose) => compare(a, b, loose) > 0\nmodule.exports = gt\n","const compare = require('./compare')\nconst gte = (a, b, loose) => compare(a, b, loose) >= 0\nmodule.exports = gte\n","const SemVer = require('../classes/semver')\n\nconst inc = (version, release, options, identifier) => {\n if (typeof (options) === 'string') {\n identifier = options\n options = undefined\n }\n\n try {\n return new SemVer(\n version instanceof SemVer ? version.version : version,\n options\n ).inc(release, identifier).version\n } catch (er) {\n return null\n }\n}\nmodule.exports = inc\n","const compare = require('./compare')\nconst lt = (a, b, loose) => compare(a, b, loose) < 0\nmodule.exports = lt\n","const compare = require('./compare')\nconst lte = (a, b, loose) => compare(a, b, loose) <= 0\nmodule.exports = lte\n","const SemVer = require('../classes/semver')\nconst major = (a, loose) => new SemVer(a, loose).major\nmodule.exports = major\n","const SemVer = require('../classes/semver')\nconst minor = (a, loose) => new SemVer(a, loose).minor\nmodule.exports = minor\n","const compare = require('./compare')\nconst neq = (a, b, loose) => compare(a, b, loose) !== 0\nmodule.exports = neq\n","const { MAX_LENGTH } = require('../internal/constants')\nconst { re, t } = require('../internal/re')\nconst SemVer = require('../classes/semver')\n\nconst parseOptions = require('../internal/parse-options')\nconst parse = (version, options) => {\n options = parseOptions(options)\n\n if (version instanceof SemVer) {\n return version\n }\n\n if (typeof version !== 'string') {\n return null\n }\n\n if (version.length > MAX_LENGTH) {\n return null\n }\n\n const r = options.loose ? re[t.LOOSE] : re[t.FULL]\n if (!r.test(version)) {\n return null\n }\n\n try {\n return new SemVer(version, options)\n } catch (er) {\n return null\n }\n}\n\nmodule.exports = parse\n","const SemVer = require('../classes/semver')\nconst patch = (a, loose) => new SemVer(a, loose).patch\nmodule.exports = patch\n","const parse = require('./parse')\nconst prerelease = (version, options) => {\n const parsed = parse(version, options)\n return (parsed && parsed.prerelease.length) ? parsed.prerelease : null\n}\nmodule.exports = prerelease\n","const compare = require('./compare')\nconst rcompare = (a, b, loose) => compare(b, a, loose)\nmodule.exports = rcompare\n","const compareBuild = require('./compare-build')\nconst rsort = (list, loose) => list.sort((a, b) => compareBuild(b, a, loose))\nmodule.exports = rsort\n","const Range = require('../classes/range')\nconst satisfies = (version, range, options) => {\n try {\n range = new Range(range, options)\n } catch (er) {\n return false\n }\n return range.test(version)\n}\nmodule.exports = satisfies\n","const compareBuild = require('./compare-build')\nconst sort = (list, loose) => list.sort((a, b) => compareBuild(a, b, loose))\nmodule.exports = sort\n","const parse = require('./parse')\nconst valid = (version, options) => {\n const v = parse(version, options)\n return v ? v.version : null\n}\nmodule.exports = valid\n","// just pre-load all the stuff that index.js lazily exports\nconst internalRe = require('./internal/re')\nconst constants = require('./internal/constants')\nconst SemVer = require('./classes/semver')\nconst identifiers = require('./internal/identifiers')\nconst parse = require('./functions/parse')\nconst valid = require('./functions/valid')\nconst clean = require('./functions/clean')\nconst inc = require('./functions/inc')\nconst diff = require('./functions/diff')\nconst major = require('./functions/major')\nconst minor = require('./functions/minor')\nconst patch = require('./functions/patch')\nconst prerelease = require('./functions/prerelease')\nconst compare = require('./functions/compare')\nconst rcompare = require('./functions/rcompare')\nconst compareLoose = require('./functions/compare-loose')\nconst compareBuild = require('./functions/compare-build')\nconst sort = require('./functions/sort')\nconst rsort = require('./functions/rsort')\nconst gt = require('./functions/gt')\nconst lt = require('./functions/lt')\nconst eq = require('./functions/eq')\nconst neq = require('./functions/neq')\nconst gte = require('./functions/gte')\nconst lte = require('./functions/lte')\nconst cmp = require('./functions/cmp')\nconst coerce = require('./functions/coerce')\nconst Comparator = require('./classes/comparator')\nconst Range = require('./classes/range')\nconst satisfies = require('./functions/satisfies')\nconst toComparators = require('./ranges/to-comparators')\nconst maxSatisfying = require('./ranges/max-satisfying')\nconst minSatisfying = require('./ranges/min-satisfying')\nconst minVersion = require('./ranges/min-version')\nconst validRange = require('./ranges/valid')\nconst outside = require('./ranges/outside')\nconst gtr = require('./ranges/gtr')\nconst ltr = require('./ranges/ltr')\nconst intersects = require('./ranges/intersects')\nconst simplifyRange = require('./ranges/simplify')\nconst subset = require('./ranges/subset')\nmodule.exports = {\n parse,\n valid,\n clean,\n inc,\n diff,\n major,\n minor,\n patch,\n prerelease,\n compare,\n rcompare,\n compareLoose,\n compareBuild,\n sort,\n rsort,\n gt,\n lt,\n eq,\n neq,\n gte,\n lte,\n cmp,\n coerce,\n Comparator,\n Range,\n satisfies,\n toComparators,\n maxSatisfying,\n minSatisfying,\n minVersion,\n validRange,\n outside,\n gtr,\n ltr,\n intersects,\n simplifyRange,\n subset,\n SemVer,\n re: internalRe.re,\n src: internalRe.src,\n tokens: internalRe.t,\n SEMVER_SPEC_VERSION: constants.SEMVER_SPEC_VERSION,\n compareIdentifiers: identifiers.compareIdentifiers,\n rcompareIdentifiers: identifiers.rcompareIdentifiers,\n}\n","// Note: this is the semver.org version of the spec that it implements\n// Not necessarily the package version of this code.\nconst SEMVER_SPEC_VERSION = '2.0.0'\n\nconst MAX_LENGTH = 256\nconst MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER ||\n/* istanbul ignore next */ 9007199254740991\n\n// Max safe segment length for coercion.\nconst MAX_SAFE_COMPONENT_LENGTH = 16\n\nmodule.exports = {\n SEMVER_SPEC_VERSION,\n MAX_LENGTH,\n MAX_SAFE_INTEGER,\n MAX_SAFE_COMPONENT_LENGTH,\n}\n","const debug = (\n typeof process === 'object' &&\n process.env &&\n process.env.NODE_DEBUG &&\n /\\bsemver\\b/i.test(process.env.NODE_DEBUG)\n) ? (...args) => console.error('SEMVER', ...args)\n : () => {}\n\nmodule.exports = debug\n","const numeric = /^[0-9]+$/\nconst compareIdentifiers = (a, b) => {\n const anum = numeric.test(a)\n const bnum = numeric.test(b)\n\n if (anum && bnum) {\n a = +a\n b = +b\n }\n\n return a === b ? 0\n : (anum && !bnum) ? -1\n : (bnum && !anum) ? 1\n : a < b ? -1\n : 1\n}\n\nconst rcompareIdentifiers = (a, b) => compareIdentifiers(b, a)\n\nmodule.exports = {\n compareIdentifiers,\n rcompareIdentifiers,\n}\n","// parse out just the options we care about so we always get a consistent\n// obj with keys in a consistent order.\nconst opts = ['includePrerelease', 'loose', 'rtl']\nconst parseOptions = options =>\n !options ? {}\n : typeof options !== 'object' ? { loose: true }\n : opts.filter(k => options[k]).reduce((o, k) => {\n o[k] = true\n return o\n }, {})\nmodule.exports = parseOptions\n","const { MAX_SAFE_COMPONENT_LENGTH } = require('./constants')\nconst debug = require('./debug')\nexports = module.exports = {}\n\n// The actual regexps go on exports.re\nconst re = exports.re = []\nconst src = exports.src = []\nconst t = exports.t = {}\nlet R = 0\n\nconst createToken = (name, value, isGlobal) => {\n const index = R++\n debug(name, index, value)\n t[name] = index\n src[index] = value\n re[index] = new RegExp(value, isGlobal ? 'g' : undefined)\n}\n\n// The following Regular Expressions can be used for tokenizing,\n// validating, and parsing SemVer version strings.\n\n// ## Numeric Identifier\n// A single `0`, or a non-zero digit followed by zero or more digits.\n\ncreateToken('NUMERICIDENTIFIER', '0|[1-9]\\\\d*')\ncreateToken('NUMERICIDENTIFIERLOOSE', '[0-9]+')\n\n// ## Non-numeric Identifier\n// Zero or more digits, followed by a letter or hyphen, and then zero or\n// more letters, digits, or hyphens.\n\ncreateToken('NONNUMERICIDENTIFIER', '\\\\d*[a-zA-Z-][a-zA-Z0-9-]*')\n\n// ## Main Version\n// Three dot-separated numeric identifiers.\n\ncreateToken('MAINVERSION', `(${src[t.NUMERICIDENTIFIER]})\\\\.` +\n `(${src[t.NUMERICIDENTIFIER]})\\\\.` +\n `(${src[t.NUMERICIDENTIFIER]})`)\n\ncreateToken('MAINVERSIONLOOSE', `(${src[t.NUMERICIDENTIFIERLOOSE]})\\\\.` +\n `(${src[t.NUMERICIDENTIFIERLOOSE]})\\\\.` +\n `(${src[t.NUMERICIDENTIFIERLOOSE]})`)\n\n// ## Pre-release Version Identifier\n// A numeric identifier, or a non-numeric identifier.\n\ncreateToken('PRERELEASEIDENTIFIER', `(?:${src[t.NUMERICIDENTIFIER]\n}|${src[t.NONNUMERICIDENTIFIER]})`)\n\ncreateToken('PRERELEASEIDENTIFIERLOOSE', `(?:${src[t.NUMERICIDENTIFIERLOOSE]\n}|${src[t.NONNUMERICIDENTIFIER]})`)\n\n// ## Pre-release Version\n// Hyphen, followed by one or more dot-separated pre-release version\n// identifiers.\n\ncreateToken('PRERELEASE', `(?:-(${src[t.PRERELEASEIDENTIFIER]\n}(?:\\\\.${src[t.PRERELEASEIDENTIFIER]})*))`)\n\ncreateToken('PRERELEASELOOSE', `(?:-?(${src[t.PRERELEASEIDENTIFIERLOOSE]\n}(?:\\\\.${src[t.PRERELEASEIDENTIFIERLOOSE]})*))`)\n\n// ## Build Metadata Identifier\n// Any combination of digits, letters, or hyphens.\n\ncreateToken('BUILDIDENTIFIER', '[0-9A-Za-z-]+')\n\n// ## Build Metadata\n// Plus sign, followed by one or more period-separated build metadata\n// identifiers.\n\ncreateToken('BUILD', `(?:\\\\+(${src[t.BUILDIDENTIFIER]\n}(?:\\\\.${src[t.BUILDIDENTIFIER]})*))`)\n\n// ## Full Version String\n// A main version, followed optionally by a pre-release version and\n// build metadata.\n\n// Note that the only major, minor, patch, and pre-release sections of\n// the version string are capturing groups. The build metadata is not a\n// capturing group, because it should not ever be used in version\n// comparison.\n\ncreateToken('FULLPLAIN', `v?${src[t.MAINVERSION]\n}${src[t.PRERELEASE]}?${\n src[t.BUILD]}?`)\n\ncreateToken('FULL', `^${src[t.FULLPLAIN]}$`)\n\n// like full, but allows v1.2.3 and =1.2.3, which people do sometimes.\n// also, 1.0.0alpha1 (prerelease without the hyphen) which is pretty\n// common in the npm registry.\ncreateToken('LOOSEPLAIN', `[v=\\\\s]*${src[t.MAINVERSIONLOOSE]\n}${src[t.PRERELEASELOOSE]}?${\n src[t.BUILD]}?`)\n\ncreateToken('LOOSE', `^${src[t.LOOSEPLAIN]}$`)\n\ncreateToken('GTLT', '((?:<|>)?=?)')\n\n// Something like \"2.*\" or \"1.2.x\".\n// Note that \"x.x\" is a valid xRange identifer, meaning \"any version\"\n// Only the first item is strictly required.\ncreateToken('XRANGEIDENTIFIERLOOSE', `${src[t.NUMERICIDENTIFIERLOOSE]}|x|X|\\\\*`)\ncreateToken('XRANGEIDENTIFIER', `${src[t.NUMERICIDENTIFIER]}|x|X|\\\\*`)\n\ncreateToken('XRANGEPLAIN', `[v=\\\\s]*(${src[t.XRANGEIDENTIFIER]})` +\n `(?:\\\\.(${src[t.XRANGEIDENTIFIER]})` +\n `(?:\\\\.(${src[t.XRANGEIDENTIFIER]})` +\n `(?:${src[t.PRERELEASE]})?${\n src[t.BUILD]}?` +\n `)?)?`)\n\ncreateToken('XRANGEPLAINLOOSE', `[v=\\\\s]*(${src[t.XRANGEIDENTIFIERLOOSE]})` +\n `(?:\\\\.(${src[t.XRANGEIDENTIFIERLOOSE]})` +\n `(?:\\\\.(${src[t.XRANGEIDENTIFIERLOOSE]})` +\n `(?:${src[t.PRERELEASELOOSE]})?${\n src[t.BUILD]}?` +\n `)?)?`)\n\ncreateToken('XRANGE', `^${src[t.GTLT]}\\\\s*${src[t.XRANGEPLAIN]}$`)\ncreateToken('XRANGELOOSE', `^${src[t.GTLT]}\\\\s*${src[t.XRANGEPLAINLOOSE]}$`)\n\n// Coercion.\n// Extract anything that could conceivably be a part of a valid semver\ncreateToken('COERCE', `${'(^|[^\\\\d])' +\n '(\\\\d{1,'}${MAX_SAFE_COMPONENT_LENGTH}})` +\n `(?:\\\\.(\\\\d{1,${MAX_SAFE_COMPONENT_LENGTH}}))?` +\n `(?:\\\\.(\\\\d{1,${MAX_SAFE_COMPONENT_LENGTH}}))?` +\n `(?:$|[^\\\\d])`)\ncreateToken('COERCERTL', src[t.COERCE], true)\n\n// Tilde ranges.\n// Meaning is \"reasonably at or greater than\"\ncreateToken('LONETILDE', '(?:~>?)')\n\ncreateToken('TILDETRIM', `(\\\\s*)${src[t.LONETILDE]}\\\\s+`, true)\nexports.tildeTrimReplace = '$1~'\n\ncreateToken('TILDE', `^${src[t.LONETILDE]}${src[t.XRANGEPLAIN]}$`)\ncreateToken('TILDELOOSE', `^${src[t.LONETILDE]}${src[t.XRANGEPLAINLOOSE]}$`)\n\n// Caret ranges.\n// Meaning is \"at least and backwards compatible with\"\ncreateToken('LONECARET', '(?:\\\\^)')\n\ncreateToken('CARETTRIM', `(\\\\s*)${src[t.LONECARET]}\\\\s+`, true)\nexports.caretTrimReplace = '$1^'\n\ncreateToken('CARET', `^${src[t.LONECARET]}${src[t.XRANGEPLAIN]}$`)\ncreateToken('CARETLOOSE', `^${src[t.LONECARET]}${src[t.XRANGEPLAINLOOSE]}$`)\n\n// A simple gt/lt/eq thing, or just \"\" to indicate \"any version\"\ncreateToken('COMPARATORLOOSE', `^${src[t.GTLT]}\\\\s*(${src[t.LOOSEPLAIN]})$|^$`)\ncreateToken('COMPARATOR', `^${src[t.GTLT]}\\\\s*(${src[t.FULLPLAIN]})$|^$`)\n\n// An expression to strip any whitespace between the gtlt and the thing\n// it modifies, so that `> 1.2.3` ==> `>1.2.3`\ncreateToken('COMPARATORTRIM', `(\\\\s*)${src[t.GTLT]\n}\\\\s*(${src[t.LOOSEPLAIN]}|${src[t.XRANGEPLAIN]})`, true)\nexports.comparatorTrimReplace = '$1$2$3'\n\n// Something like `1.2.3 - 1.2.4`\n// Note that these all use the loose form, because they'll be\n// checked against either the strict or loose comparator form\n// later.\ncreateToken('HYPHENRANGE', `^\\\\s*(${src[t.XRANGEPLAIN]})` +\n `\\\\s+-\\\\s+` +\n `(${src[t.XRANGEPLAIN]})` +\n `\\\\s*$`)\n\ncreateToken('HYPHENRANGELOOSE', `^\\\\s*(${src[t.XRANGEPLAINLOOSE]})` +\n `\\\\s+-\\\\s+` +\n `(${src[t.XRANGEPLAINLOOSE]})` +\n `\\\\s*$`)\n\n// Star ranges basically just allow anything at all.\ncreateToken('STAR', '(<|>)?=?\\\\s*\\\\*')\n// >=0.0.0 is like a star\ncreateToken('GTE0', '^\\\\s*>=\\\\s*0\\\\.0\\\\.0\\\\s*$')\ncreateToken('GTE0PRE', '^\\\\s*>=\\\\s*0\\\\.0\\\\.0-0\\\\s*$')\n","'use strict'\n\n// A linked list to keep track of recently-used-ness\nconst Yallist = require('yallist')\n\nconst MAX = Symbol('max')\nconst LENGTH = Symbol('length')\nconst LENGTH_CALCULATOR = Symbol('lengthCalculator')\nconst ALLOW_STALE = Symbol('allowStale')\nconst MAX_AGE = Symbol('maxAge')\nconst DISPOSE = Symbol('dispose')\nconst NO_DISPOSE_ON_SET = Symbol('noDisposeOnSet')\nconst LRU_LIST = Symbol('lruList')\nconst CACHE = Symbol('cache')\nconst UPDATE_AGE_ON_GET = Symbol('updateAgeOnGet')\n\nconst naiveLength = () => 1\n\n// lruList is a yallist where the head is the youngest\n// item, and the tail is the oldest. the list contains the Hit\n// objects as the entries.\n// Each Hit object has a reference to its Yallist.Node. This\n// never changes.\n//\n// cache is a Map (or PseudoMap) that matches the keys to\n// the Yallist.Node object.\nclass LRUCache {\n constructor (options) {\n if (typeof options === 'number')\n options = { max: options }\n\n if (!options)\n options = {}\n\n if (options.max && (typeof options.max !== 'number' || options.max < 0))\n throw new TypeError('max must be a non-negative number')\n // Kind of weird to have a default max of Infinity, but oh well.\n const max = this[MAX] = options.max || Infinity\n\n const lc = options.length || naiveLength\n this[LENGTH_CALCULATOR] = (typeof lc !== 'function') ? naiveLength : lc\n this[ALLOW_STALE] = options.stale || false\n if (options.maxAge && typeof options.maxAge !== 'number')\n throw new TypeError('maxAge must be a number')\n this[MAX_AGE] = options.maxAge || 0\n this[DISPOSE] = options.dispose\n this[NO_DISPOSE_ON_SET] = options.noDisposeOnSet || false\n this[UPDATE_AGE_ON_GET] = options.updateAgeOnGet || false\n this.reset()\n }\n\n // resize the cache when the max changes.\n set max (mL) {\n if (typeof mL !== 'number' || mL < 0)\n throw new TypeError('max must be a non-negative number')\n\n this[MAX] = mL || Infinity\n trim(this)\n }\n get max () {\n return this[MAX]\n }\n\n set allowStale (allowStale) {\n this[ALLOW_STALE] = !!allowStale\n }\n get allowStale () {\n return this[ALLOW_STALE]\n }\n\n set maxAge (mA) {\n if (typeof mA !== 'number')\n throw new TypeError('maxAge must be a non-negative number')\n\n this[MAX_AGE] = mA\n trim(this)\n }\n get maxAge () {\n return this[MAX_AGE]\n }\n\n // resize the cache when the lengthCalculator changes.\n set lengthCalculator (lC) {\n if (typeof lC !== 'function')\n lC = naiveLength\n\n if (lC !== this[LENGTH_CALCULATOR]) {\n this[LENGTH_CALCULATOR] = lC\n this[LENGTH] = 0\n this[LRU_LIST].forEach(hit => {\n hit.length = this[LENGTH_CALCULATOR](hit.value, hit.key)\n this[LENGTH] += hit.length\n })\n }\n trim(this)\n }\n get lengthCalculator () { return this[LENGTH_CALCULATOR] }\n\n get length () { return this[LENGTH] }\n get itemCount () { return this[LRU_LIST].length }\n\n rforEach (fn, thisp) {\n thisp = thisp || this\n for (let walker = this[LRU_LIST].tail; walker !== null;) {\n const prev = walker.prev\n forEachStep(this, fn, walker, thisp)\n walker = prev\n }\n }\n\n forEach (fn, thisp) {\n thisp = thisp || this\n for (let walker = this[LRU_LIST].head; walker !== null;) {\n const next = walker.next\n forEachStep(this, fn, walker, thisp)\n walker = next\n }\n }\n\n keys () {\n return this[LRU_LIST].toArray().map(k => k.key)\n }\n\n values () {\n return this[LRU_LIST].toArray().map(k => k.value)\n }\n\n reset () {\n if (this[DISPOSE] &&\n this[LRU_LIST] &&\n this[LRU_LIST].length) {\n this[LRU_LIST].forEach(hit => this[DISPOSE](hit.key, hit.value))\n }\n\n this[CACHE] = new Map() // hash of items by key\n this[LRU_LIST] = new Yallist() // list of items in order of use recency\n this[LENGTH] = 0 // length of items in the list\n }\n\n dump () {\n return this[LRU_LIST].map(hit =>\n isStale(this, hit) ? false : {\n k: hit.key,\n v: hit.value,\n e: hit.now + (hit.maxAge || 0)\n }).toArray().filter(h => h)\n }\n\n dumpLru () {\n return this[LRU_LIST]\n }\n\n set (key, value, maxAge) {\n maxAge = maxAge || this[MAX_AGE]\n\n if (maxAge && typeof maxAge !== 'number')\n throw new TypeError('maxAge must be a number')\n\n const now = maxAge ? Date.now() : 0\n const len = this[LENGTH_CALCULATOR](value, key)\n\n if (this[CACHE].has(key)) {\n if (len > this[MAX]) {\n del(this, this[CACHE].get(key))\n return false\n }\n\n const node = this[CACHE].get(key)\n const item = node.value\n\n // dispose of the old one before overwriting\n // split out into 2 ifs for better coverage tracking\n if (this[DISPOSE]) {\n if (!this[NO_DISPOSE_ON_SET])\n this[DISPOSE](key, item.value)\n }\n\n item.now = now\n item.maxAge = maxAge\n item.value = value\n this[LENGTH] += len - item.length\n item.length = len\n this.get(key)\n trim(this)\n return true\n }\n\n const hit = new Entry(key, value, len, now, maxAge)\n\n // oversized objects fall out of cache automatically.\n if (hit.length > this[MAX]) {\n if (this[DISPOSE])\n this[DISPOSE](key, value)\n\n return false\n }\n\n this[LENGTH] += hit.length\n this[LRU_LIST].unshift(hit)\n this[CACHE].set(key, this[LRU_LIST].head)\n trim(this)\n return true\n }\n\n has (key) {\n if (!this[CACHE].has(key)) return false\n const hit = this[CACHE].get(key).value\n return !isStale(this, hit)\n }\n\n get (key) {\n return get(this, key, true)\n }\n\n peek (key) {\n return get(this, key, false)\n }\n\n pop () {\n const node = this[LRU_LIST].tail\n if (!node)\n return null\n\n del(this, node)\n return node.value\n }\n\n del (key) {\n del(this, this[CACHE].get(key))\n }\n\n load (arr) {\n // reset the cache\n this.reset()\n\n const now = Date.now()\n // A previous serialized cache has the most recent items first\n for (let l = arr.length - 1; l >= 0; l--) {\n const hit = arr[l]\n const expiresAt = hit.e || 0\n if (expiresAt === 0)\n // the item was created without expiration in a non aged cache\n this.set(hit.k, hit.v)\n else {\n const maxAge = expiresAt - now\n // dont add already expired items\n if (maxAge > 0) {\n this.set(hit.k, hit.v, maxAge)\n }\n }\n }\n }\n\n prune () {\n this[CACHE].forEach((value, key) => get(this, key, false))\n }\n}\n\nconst get = (self, key, doUse) => {\n const node = self[CACHE].get(key)\n if (node) {\n const hit = node.value\n if (isStale(self, hit)) {\n del(self, node)\n if (!self[ALLOW_STALE])\n return undefined\n } else {\n if (doUse) {\n if (self[UPDATE_AGE_ON_GET])\n node.value.now = Date.now()\n self[LRU_LIST].unshiftNode(node)\n }\n }\n return hit.value\n }\n}\n\nconst isStale = (self, hit) => {\n if (!hit || (!hit.maxAge && !self[MAX_AGE]))\n return false\n\n const diff = Date.now() - hit.now\n return hit.maxAge ? diff > hit.maxAge\n : self[MAX_AGE] && (diff > self[MAX_AGE])\n}\n\nconst trim = self => {\n if (self[LENGTH] > self[MAX]) {\n for (let walker = self[LRU_LIST].tail;\n self[LENGTH] > self[MAX] && walker !== null;) {\n // We know that we're about to delete this one, and also\n // what the next least recently used key will be, so just\n // go ahead and set it now.\n const prev = walker.prev\n del(self, walker)\n walker = prev\n }\n }\n}\n\nconst del = (self, node) => {\n if (node) {\n const hit = node.value\n if (self[DISPOSE])\n self[DISPOSE](hit.key, hit.value)\n\n self[LENGTH] -= hit.length\n self[CACHE].delete(hit.key)\n self[LRU_LIST].removeNode(node)\n }\n}\n\nclass Entry {\n constructor (key, value, length, now, maxAge) {\n this.key = key\n this.value = value\n this.length = length\n this.now = now\n this.maxAge = maxAge || 0\n }\n}\n\nconst forEachStep = (self, fn, node, thisp) => {\n let hit = node.value\n if (isStale(self, hit)) {\n del(self, node)\n if (!self[ALLOW_STALE])\n hit = undefined\n }\n if (hit)\n fn.call(thisp, hit.value, hit.key, self)\n}\n\nmodule.exports = LRUCache\n","'use strict'\nmodule.exports = function (Yallist) {\n Yallist.prototype[Symbol.iterator] = function* () {\n for (let walker = this.head; walker; walker = walker.next) {\n yield walker.value\n }\n }\n}\n","'use strict'\nmodule.exports = Yallist\n\nYallist.Node = Node\nYallist.create = Yallist\n\nfunction Yallist (list) {\n var self = this\n if (!(self instanceof Yallist)) {\n self = new Yallist()\n }\n\n self.tail = null\n self.head = null\n self.length = 0\n\n if (list && typeof list.forEach === 'function') {\n list.forEach(function (item) {\n self.push(item)\n })\n } else if (arguments.length > 0) {\n for (var i = 0, l = arguments.length; i < l; i++) {\n self.push(arguments[i])\n }\n }\n\n return self\n}\n\nYallist.prototype.removeNode = function (node) {\n if (node.list !== this) {\n throw new Error('removing node which does not belong to this list')\n }\n\n var next = node.next\n var prev = node.prev\n\n if (next) {\n next.prev = prev\n }\n\n if (prev) {\n prev.next = next\n }\n\n if (node === this.head) {\n this.head = next\n }\n if (node === this.tail) {\n this.tail = prev\n }\n\n node.list.length--\n node.next = null\n node.prev = null\n node.list = null\n\n return next\n}\n\nYallist.prototype.unshiftNode = function (node) {\n if (node === this.head) {\n return\n }\n\n if (node.list) {\n node.list.removeNode(node)\n }\n\n var head = this.head\n node.list = this\n node.next = head\n if (head) {\n head.prev = node\n }\n\n this.head = node\n if (!this.tail) {\n this.tail = node\n }\n this.length++\n}\n\nYallist.prototype.pushNode = function (node) {\n if (node === this.tail) {\n return\n }\n\n if (node.list) {\n node.list.removeNode(node)\n }\n\n var tail = this.tail\n node.list = this\n node.prev = tail\n if (tail) {\n tail.next = node\n }\n\n this.tail = node\n if (!this.head) {\n this.head = node\n }\n this.length++\n}\n\nYallist.prototype.push = function () {\n for (var i = 0, l = arguments.length; i < l; i++) {\n push(this, arguments[i])\n }\n return this.length\n}\n\nYallist.prototype.unshift = function () {\n for (var i = 0, l = arguments.length; i < l; i++) {\n unshift(this, arguments[i])\n }\n return this.length\n}\n\nYallist.prototype.pop = function () {\n if (!this.tail) {\n return undefined\n }\n\n var res = this.tail.value\n this.tail = this.tail.prev\n if (this.tail) {\n this.tail.next = null\n } else {\n this.head = null\n }\n this.length--\n return res\n}\n\nYallist.prototype.shift = function () {\n if (!this.head) {\n return undefined\n }\n\n var res = this.head.value\n this.head = this.head.next\n if (this.head) {\n this.head.prev = null\n } else {\n this.tail = null\n }\n this.length--\n return res\n}\n\nYallist.prototype.forEach = function (fn, thisp) {\n thisp = thisp || this\n for (var walker = this.head, i = 0; walker !== null; i++) {\n fn.call(thisp, walker.value, i, this)\n walker = walker.next\n }\n}\n\nYallist.prototype.forEachReverse = function (fn, thisp) {\n thisp = thisp || this\n for (var walker = this.tail, i = this.length - 1; walker !== null; i--) {\n fn.call(thisp, walker.value, i, this)\n walker = walker.prev\n }\n}\n\nYallist.prototype.get = function (n) {\n for (var i = 0, walker = this.head; walker !== null && i < n; i++) {\n // abort out of the list early if we hit a cycle\n walker = walker.next\n }\n if (i === n && walker !== null) {\n return walker.value\n }\n}\n\nYallist.prototype.getReverse = function (n) {\n for (var i = 0, walker = this.tail; walker !== null && i < n; i++) {\n // abort out of the list early if we hit a cycle\n walker = walker.prev\n }\n if (i === n && walker !== null) {\n return walker.value\n }\n}\n\nYallist.prototype.map = function (fn, thisp) {\n thisp = thisp || this\n var res = new Yallist()\n for (var walker = this.head; walker !== null;) {\n res.push(fn.call(thisp, walker.value, this))\n walker = walker.next\n }\n return res\n}\n\nYallist.prototype.mapReverse = function (fn, thisp) {\n thisp = thisp || this\n var res = new Yallist()\n for (var walker = this.tail; walker !== null;) {\n res.push(fn.call(thisp, walker.value, this))\n walker = walker.prev\n }\n return res\n}\n\nYallist.prototype.reduce = function (fn, initial) {\n var acc\n var walker = this.head\n if (arguments.length > 1) {\n acc = initial\n } else if (this.head) {\n walker = this.head.next\n acc = this.head.value\n } else {\n throw new TypeError('Reduce of empty list with no initial value')\n }\n\n for (var i = 0; walker !== null; i++) {\n acc = fn(acc, walker.value, i)\n walker = walker.next\n }\n\n return acc\n}\n\nYallist.prototype.reduceReverse = function (fn, initial) {\n var acc\n var walker = this.tail\n if (arguments.length > 1) {\n acc = initial\n } else if (this.tail) {\n walker = this.tail.prev\n acc = this.tail.value\n } else {\n throw new TypeError('Reduce of empty list with no initial value')\n }\n\n for (var i = this.length - 1; walker !== null; i--) {\n acc = fn(acc, walker.value, i)\n walker = walker.prev\n }\n\n return acc\n}\n\nYallist.prototype.toArray = function () {\n var arr = new Array(this.length)\n for (var i = 0, walker = this.head; walker !== null; i++) {\n arr[i] = walker.value\n walker = walker.next\n }\n return arr\n}\n\nYallist.prototype.toArrayReverse = function () {\n var arr = new Array(this.length)\n for (var i = 0, walker = this.tail; walker !== null; i++) {\n arr[i] = walker.value\n walker = walker.prev\n }\n return arr\n}\n\nYallist.prototype.slice = function (from, to) {\n to = to || this.length\n if (to < 0) {\n to += this.length\n }\n from = from || 0\n if (from < 0) {\n from += this.length\n }\n var ret = new Yallist()\n if (to < from || to < 0) {\n return ret\n }\n if (from < 0) {\n from = 0\n }\n if (to > this.length) {\n to = this.length\n }\n for (var i = 0, walker = this.head; walker !== null && i < from; i++) {\n walker = walker.next\n }\n for (; walker !== null && i < to; i++, walker = walker.next) {\n ret.push(walker.value)\n }\n return ret\n}\n\nYallist.prototype.sliceReverse = function (from, to) {\n to = to || this.length\n if (to < 0) {\n to += this.length\n }\n from = from || 0\n if (from < 0) {\n from += this.length\n }\n var ret = new Yallist()\n if (to < from || to < 0) {\n return ret\n }\n if (from < 0) {\n from = 0\n }\n if (to > this.length) {\n to = this.length\n }\n for (var i = this.length, walker = this.tail; walker !== null && i > to; i--) {\n walker = walker.prev\n }\n for (; walker !== null && i > from; i--, walker = walker.prev) {\n ret.push(walker.value)\n }\n return ret\n}\n\nYallist.prototype.splice = function (start, deleteCount, ...nodes) {\n if (start > this.length) {\n start = this.length - 1\n }\n if (start < 0) {\n start = this.length + start;\n }\n\n for (var i = 0, walker = this.head; walker !== null && i < start; i++) {\n walker = walker.next\n }\n\n var ret = []\n for (var i = 0; walker && i < deleteCount; i++) {\n ret.push(walker.value)\n walker = this.removeNode(walker)\n }\n if (walker === null) {\n walker = this.tail\n }\n\n if (walker !== this.head && walker !== this.tail) {\n walker = walker.prev\n }\n\n for (var i = 0; i < nodes.length; i++) {\n walker = insert(this, walker, nodes[i])\n }\n return ret;\n}\n\nYallist.prototype.reverse = function () {\n var head = this.head\n var tail = this.tail\n for (var walker = head; walker !== null; walker = walker.prev) {\n var p = walker.prev\n walker.prev = walker.next\n walker.next = p\n }\n this.head = tail\n this.tail = head\n return this\n}\n\nfunction insert (self, node, value) {\n var inserted = node === self.head ?\n new Node(value, null, node, self) :\n new Node(value, node, node.next, self)\n\n if (inserted.next === null) {\n self.tail = inserted\n }\n if (inserted.prev === null) {\n self.head = inserted\n }\n\n self.length++\n\n return inserted\n}\n\nfunction push (self, item) {\n self.tail = new Node(item, self.tail, null, self)\n if (!self.head) {\n self.head = self.tail\n }\n self.length++\n}\n\nfunction unshift (self, item) {\n self.head = new Node(item, null, self.head, self)\n if (!self.tail) {\n self.tail = self.head\n }\n self.length++\n}\n\nfunction Node (value, prev, next, list) {\n if (!(this instanceof Node)) {\n return new Node(value, prev, next, list)\n }\n\n this.list = list\n this.value = value\n\n if (prev) {\n prev.next = this\n this.prev = prev\n } else {\n this.prev = null\n }\n\n if (next) {\n next.prev = this\n this.next = next\n } else {\n this.next = null\n }\n}\n\ntry {\n // add if support for Symbol.iterator is present\n require('./iterator.js')(Yallist)\n} catch (er) {}\n","// Determine if version is greater than all the versions possible in the range.\nconst outside = require('./outside')\nconst gtr = (version, range, options) => outside(version, range, '>', options)\nmodule.exports = gtr\n","const Range = require('../classes/range')\nconst intersects = (r1, r2, options) => {\n r1 = new Range(r1, options)\n r2 = new Range(r2, options)\n return r1.intersects(r2)\n}\nmodule.exports = intersects\n","const outside = require('./outside')\n// Determine if version is less than all the versions possible in the range\nconst ltr = (version, range, options) => outside(version, range, '<', options)\nmodule.exports = ltr\n","const SemVer = require('../classes/semver')\nconst Range = require('../classes/range')\n\nconst maxSatisfying = (versions, range, options) => {\n let max = null\n let maxSV = null\n let rangeObj = null\n try {\n rangeObj = new Range(range, options)\n } catch (er) {\n return null\n }\n versions.forEach((v) => {\n if (rangeObj.test(v)) {\n // satisfies(v, range, options)\n if (!max || maxSV.compare(v) === -1) {\n // compare(max, v, true)\n max = v\n maxSV = new SemVer(max, options)\n }\n }\n })\n return max\n}\nmodule.exports = maxSatisfying\n","const SemVer = require('../classes/semver')\nconst Range = require('../classes/range')\nconst minSatisfying = (versions, range, options) => {\n let min = null\n let minSV = null\n let rangeObj = null\n try {\n rangeObj = new Range(range, options)\n } catch (er) {\n return null\n }\n versions.forEach((v) => {\n if (rangeObj.test(v)) {\n // satisfies(v, range, options)\n if (!min || minSV.compare(v) === 1) {\n // compare(min, v, true)\n min = v\n minSV = new SemVer(min, options)\n }\n }\n })\n return min\n}\nmodule.exports = minSatisfying\n","const SemVer = require('../classes/semver')\nconst Range = require('../classes/range')\nconst gt = require('../functions/gt')\n\nconst minVersion = (range, loose) => {\n range = new Range(range, loose)\n\n let minver = new SemVer('0.0.0')\n if (range.test(minver)) {\n return minver\n }\n\n minver = new SemVer('0.0.0-0')\n if (range.test(minver)) {\n return minver\n }\n\n minver = null\n for (let i = 0; i < range.set.length; ++i) {\n const comparators = range.set[i]\n\n let setMin = null\n comparators.forEach((comparator) => {\n // Clone to avoid manipulating the comparator's semver object.\n const compver = new SemVer(comparator.semver.version)\n switch (comparator.operator) {\n case '>':\n if (compver.prerelease.length === 0) {\n compver.patch++\n } else {\n compver.prerelease.push(0)\n }\n compver.raw = compver.format()\n /* fallthrough */\n case '':\n case '>=':\n if (!setMin || gt(compver, setMin)) {\n setMin = compver\n }\n break\n case '<':\n case '<=':\n /* Ignore maximum versions */\n break\n /* istanbul ignore next */\n default:\n throw new Error(`Unexpected operation: ${comparator.operator}`)\n }\n })\n if (setMin && (!minver || gt(minver, setMin))) {\n minver = setMin\n }\n }\n\n if (minver && range.test(minver)) {\n return minver\n }\n\n return null\n}\nmodule.exports = minVersion\n","const SemVer = require('../classes/semver')\nconst Comparator = require('../classes/comparator')\nconst { ANY } = Comparator\nconst Range = require('../classes/range')\nconst satisfies = require('../functions/satisfies')\nconst gt = require('../functions/gt')\nconst lt = require('../functions/lt')\nconst lte = require('../functions/lte')\nconst gte = require('../functions/gte')\n\nconst outside = (version, range, hilo, options) => {\n version = new SemVer(version, options)\n range = new Range(range, options)\n\n let gtfn, ltefn, ltfn, comp, ecomp\n switch (hilo) {\n case '>':\n gtfn = gt\n ltefn = lte\n ltfn = lt\n comp = '>'\n ecomp = '>='\n break\n case '<':\n gtfn = lt\n ltefn = gte\n ltfn = gt\n comp = '<'\n ecomp = '<='\n break\n default:\n throw new TypeError('Must provide a hilo val of \"<\" or \">\"')\n }\n\n // If it satisfies the range it is not outside\n if (satisfies(version, range, options)) {\n return false\n }\n\n // From now on, variable terms are as if we're in \"gtr\" mode.\n // but note that everything is flipped for the \"ltr\" function.\n\n for (let i = 0; i < range.set.length; ++i) {\n const comparators = range.set[i]\n\n let high = null\n let low = null\n\n comparators.forEach((comparator) => {\n if (comparator.semver === ANY) {\n comparator = new Comparator('>=0.0.0')\n }\n high = high || comparator\n low = low || comparator\n if (gtfn(comparator.semver, high.semver, options)) {\n high = comparator\n } else if (ltfn(comparator.semver, low.semver, options)) {\n low = comparator\n }\n })\n\n // If the edge version comparator has a operator then our version\n // isn't outside it\n if (high.operator === comp || high.operator === ecomp) {\n return false\n }\n\n // If the lowest version comparator has an operator and our version\n // is less than it then it isn't higher than the range\n if ((!low.operator || low.operator === comp) &&\n ltefn(version, low.semver)) {\n return false\n } else if (low.operator === ecomp && ltfn(version, low.semver)) {\n return false\n }\n }\n return true\n}\n\nmodule.exports = outside\n","// given a set of versions and a range, create a \"simplified\" range\n// that includes the same versions that the original range does\n// If the original range is shorter than the simplified one, return that.\nconst satisfies = require('../functions/satisfies.js')\nconst compare = require('../functions/compare.js')\nmodule.exports = (versions, range, options) => {\n const set = []\n let first = null\n let prev = null\n const v = versions.sort((a, b) => compare(a, b, options))\n for (const version of v) {\n const included = satisfies(version, range, options)\n if (included) {\n prev = version\n if (!first) {\n first = version\n }\n } else {\n if (prev) {\n set.push([first, prev])\n }\n prev = null\n first = null\n }\n }\n if (first) {\n set.push([first, null])\n }\n\n const ranges = []\n for (const [min, max] of set) {\n if (min === max) {\n ranges.push(min)\n } else if (!max && min === v[0]) {\n ranges.push('*')\n } else if (!max) {\n ranges.push(`>=${min}`)\n } else if (min === v[0]) {\n ranges.push(`<=${max}`)\n } else {\n ranges.push(`${min} - ${max}`)\n }\n }\n const simplified = ranges.join(' || ')\n const original = typeof range.raw === 'string' ? range.raw : String(range)\n return simplified.length < original.length ? simplified : range\n}\n","const Range = require('../classes/range.js')\nconst Comparator = require('../classes/comparator.js')\nconst { ANY } = Comparator\nconst satisfies = require('../functions/satisfies.js')\nconst compare = require('../functions/compare.js')\n\n// Complex range `r1 || r2 || ...` is a subset of `R1 || R2 || ...` iff:\n// - Every simple range `r1, r2, ...` is a null set, OR\n// - Every simple range `r1, r2, ...` which is not a null set is a subset of\n// some `R1, R2, ...`\n//\n// Simple range `c1 c2 ...` is a subset of simple range `C1 C2 ...` iff:\n// - If c is only the ANY comparator\n// - If C is only the ANY comparator, return true\n// - Else if in prerelease mode, return false\n// - else replace c with `[>=0.0.0]`\n// - If C is only the ANY comparator\n// - if in prerelease mode, return true\n// - else replace C with `[>=0.0.0]`\n// - Let EQ be the set of = comparators in c\n// - If EQ is more than one, return true (null set)\n// - Let GT be the highest > or >= comparator in c\n// - Let LT be the lowest < or <= comparator in c\n// - If GT and LT, and GT.semver > LT.semver, return true (null set)\n// - If any C is a = range, and GT or LT are set, return false\n// - If EQ\n// - If GT, and EQ does not satisfy GT, return true (null set)\n// - If LT, and EQ does not satisfy LT, return true (null set)\n// - If EQ satisfies every C, return true\n// - Else return false\n// - If GT\n// - If GT.semver is lower than any > or >= comp in C, return false\n// - If GT is >=, and GT.semver does not satisfy every C, return false\n// - If GT.semver has a prerelease, and not in prerelease mode\n// - If no C has a prerelease and the GT.semver tuple, return false\n// - If LT\n// - If LT.semver is greater than any < or <= comp in C, return false\n// - If LT is <=, and LT.semver does not satisfy every C, return false\n// - If GT.semver has a prerelease, and not in prerelease mode\n// - If no C has a prerelease and the LT.semver tuple, return false\n// - Else return true\n\nconst subset = (sub, dom, options = {}) => {\n if (sub === dom) {\n return true\n }\n\n sub = new Range(sub, options)\n dom = new Range(dom, options)\n let sawNonNull = false\n\n OUTER: for (const simpleSub of sub.set) {\n for (const simpleDom of dom.set) {\n const isSub = simpleSubset(simpleSub, simpleDom, options)\n sawNonNull = sawNonNull || isSub !== null\n if (isSub) {\n continue OUTER\n }\n }\n // the null set is a subset of everything, but null simple ranges in\n // a complex range should be ignored. so if we saw a non-null range,\n // then we know this isn't a subset, but if EVERY simple range was null,\n // then it is a subset.\n if (sawNonNull) {\n return false\n }\n }\n return true\n}\n\nconst simpleSubset = (sub, dom, options) => {\n if (sub === dom) {\n return true\n }\n\n if (sub.length === 1 && sub[0].semver === ANY) {\n if (dom.length === 1 && dom[0].semver === ANY) {\n return true\n } else if (options.includePrerelease) {\n sub = [new Comparator('>=0.0.0-0')]\n } else {\n sub = [new Comparator('>=0.0.0')]\n }\n }\n\n if (dom.length === 1 && dom[0].semver === ANY) {\n if (options.includePrerelease) {\n return true\n } else {\n dom = [new Comparator('>=0.0.0')]\n }\n }\n\n const eqSet = new Set()\n let gt, lt\n for (const c of sub) {\n if (c.operator === '>' || c.operator === '>=') {\n gt = higherGT(gt, c, options)\n } else if (c.operator === '<' || c.operator === '<=') {\n lt = lowerLT(lt, c, options)\n } else {\n eqSet.add(c.semver)\n }\n }\n\n if (eqSet.size > 1) {\n return null\n }\n\n let gtltComp\n if (gt && lt) {\n gtltComp = compare(gt.semver, lt.semver, options)\n if (gtltComp > 0) {\n return null\n } else if (gtltComp === 0 && (gt.operator !== '>=' || lt.operator !== '<=')) {\n return null\n }\n }\n\n // will iterate one or zero times\n for (const eq of eqSet) {\n if (gt && !satisfies(eq, String(gt), options)) {\n return null\n }\n\n if (lt && !satisfies(eq, String(lt), options)) {\n return null\n }\n\n for (const c of dom) {\n if (!satisfies(eq, String(c), options)) {\n return false\n }\n }\n\n return true\n }\n\n let higher, lower\n let hasDomLT, hasDomGT\n // if the subset has a prerelease, we need a comparator in the superset\n // with the same tuple and a prerelease, or it's not a subset\n let needDomLTPre = lt &&\n !options.includePrerelease &&\n lt.semver.prerelease.length ? lt.semver : false\n let needDomGTPre = gt &&\n !options.includePrerelease &&\n gt.semver.prerelease.length ? gt.semver : false\n // exception: <1.2.3-0 is the same as <1.2.3\n if (needDomLTPre && needDomLTPre.prerelease.length === 1 &&\n lt.operator === '<' && needDomLTPre.prerelease[0] === 0) {\n needDomLTPre = false\n }\n\n for (const c of dom) {\n hasDomGT = hasDomGT || c.operator === '>' || c.operator === '>='\n hasDomLT = hasDomLT || c.operator === '<' || c.operator === '<='\n if (gt) {\n if (needDomGTPre) {\n if (c.semver.prerelease && c.semver.prerelease.length &&\n c.semver.major === needDomGTPre.major &&\n c.semver.minor === needDomGTPre.minor &&\n c.semver.patch === needDomGTPre.patch) {\n needDomGTPre = false\n }\n }\n if (c.operator === '>' || c.operator === '>=') {\n higher = higherGT(gt, c, options)\n if (higher === c && higher !== gt) {\n return false\n }\n } else if (gt.operator === '>=' && !satisfies(gt.semver, String(c), options)) {\n return false\n }\n }\n if (lt) {\n if (needDomLTPre) {\n if (c.semver.prerelease && c.semver.prerelease.length &&\n c.semver.major === needDomLTPre.major &&\n c.semver.minor === needDomLTPre.minor &&\n c.semver.patch === needDomLTPre.patch) {\n needDomLTPre = false\n }\n }\n if (c.operator === '<' || c.operator === '<=') {\n lower = lowerLT(lt, c, options)\n if (lower === c && lower !== lt) {\n return false\n }\n } else if (lt.operator === '<=' && !satisfies(lt.semver, String(c), options)) {\n return false\n }\n }\n if (!c.operator && (lt || gt) && gtltComp !== 0) {\n return false\n }\n }\n\n // if there was a < or >, and nothing in the dom, then must be false\n // UNLESS it was limited by another range in the other direction.\n // Eg, >1.0.0 <1.0.1 is still a subset of <2.0.0\n if (gt && hasDomLT && !lt && gtltComp !== 0) {\n return false\n }\n\n if (lt && hasDomGT && !gt && gtltComp !== 0) {\n return false\n }\n\n // we needed a prerelease range in a specific tuple, but didn't get one\n // then this isn't a subset. eg >=1.2.3-pre is not a subset of >=1.0.0,\n // because it includes prereleases in the 1.2.3 tuple\n if (needDomGTPre || needDomLTPre) {\n return false\n }\n\n return true\n}\n\n// >=1.2.3 is lower than >1.2.3\nconst higherGT = (a, b, options) => {\n if (!a) {\n return b\n }\n const comp = compare(a.semver, b.semver, options)\n return comp > 0 ? a\n : comp < 0 ? b\n : b.operator === '>' && a.operator === '>=' ? b\n : a\n}\n\n// <=1.2.3 is higher than <1.2.3\nconst lowerLT = (a, b, options) => {\n if (!a) {\n return b\n }\n const comp = compare(a.semver, b.semver, options)\n return comp < 0 ? a\n : comp > 0 ? b\n : b.operator === '<' && a.operator === '<=' ? b\n : a\n}\n\nmodule.exports = subset\n","const Range = require('../classes/range')\n\n// Mostly just for testing and legacy API reasons\nconst toComparators = (range, options) =>\n new Range(range, options).set\n .map(comp => comp.map(c => c.value).join(' ').trim().split(' '))\n\nmodule.exports = toComparators\n","const Range = require('../classes/range')\nconst validRange = (range, options) => {\n try {\n // Return '*' instead of '' so that truthiness works.\n // This will throw if it's invalid anyway\n return new Range(range, options).range || '*'\n } catch (er) {\n return null\n }\n}\nmodule.exports = validRange\n","//\n\nmodule.exports = function shallowEqual(objA, objB, compare, compareContext) {\n var ret = compare ? compare.call(compareContext, objA, objB) : void 0;\n\n if (ret !== void 0) {\n return !!ret;\n }\n\n if (objA === objB) {\n return true;\n }\n\n if (typeof objA !== \"object\" || !objA || typeof objB !== \"object\" || !objB) {\n return false;\n }\n\n var keysA = Object.keys(objA);\n var keysB = Object.keys(objB);\n\n if (keysA.length !== keysB.length) {\n return false;\n }\n\n var bHasOwnProperty = Object.prototype.hasOwnProperty.bind(objB);\n\n // Test for A's keys different from B.\n for (var idx = 0; idx < keysA.length; idx++) {\n var key = keysA[idx];\n\n if (!bHasOwnProperty(key)) {\n return false;\n }\n\n var valueA = objA[key];\n var valueB = objB[key];\n\n ret = compare ? compare.call(compareContext, valueA, valueB, key) : void 0;\n\n if (ret === false || (ret === void 0 && valueA !== valueB)) {\n return false;\n }\n }\n\n return true;\n};\n","// see https://tools.ietf.org/html/rfc1808\n\n(function (root) {\n var URL_REGEX =\n /^(?=((?:[a-zA-Z0-9+\\-.]+:)?))\\1(?=((?:\\/\\/[^\\/?#]*)?))\\2(?=((?:(?:[^?#\\/]*\\/)*[^;?#\\/]*)?))\\3((?:;[^?#]*)?)(\\?[^#]*)?(#[^]*)?$/;\n var FIRST_SEGMENT_REGEX = /^(?=([^\\/?#]*))\\1([^]*)$/;\n var SLASH_DOT_REGEX = /(?:\\/|^)\\.(?=\\/)/g;\n var SLASH_DOT_DOT_REGEX = /(?:\\/|^)\\.\\.\\/(?!\\.\\.\\/)[^\\/]*(?=\\/)/g;\n\n var URLToolkit = {\n // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //\n // E.g\n // With opts.alwaysNormalize = false (default, spec compliant)\n // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g\n // With opts.alwaysNormalize = true (not spec compliant)\n // http://a.com/b/cd + /e/f/../g => http://a.com/e/g\n buildAbsoluteURL: function (baseURL, relativeURL, opts) {\n opts = opts || {};\n // remove any remaining space and CRLF\n baseURL = baseURL.trim();\n relativeURL = relativeURL.trim();\n if (!relativeURL) {\n // 2a) If the embedded URL is entirely empty, it inherits the\n // entire base URL (i.e., is set equal to the base URL)\n // and we are done.\n if (!opts.alwaysNormalize) {\n return baseURL;\n }\n var basePartsForNormalise = URLToolkit.parseURL(baseURL);\n if (!basePartsForNormalise) {\n throw new Error('Error trying to parse base URL.');\n }\n basePartsForNormalise.path = URLToolkit.normalizePath(\n basePartsForNormalise.path\n );\n return URLToolkit.buildURLFromParts(basePartsForNormalise);\n }\n var relativeParts = URLToolkit.parseURL(relativeURL);\n if (!relativeParts) {\n throw new Error('Error trying to parse relative URL.');\n }\n if (relativeParts.scheme) {\n // 2b) If the embedded URL starts with a scheme name, it is\n // interpreted as an absolute URL and we are done.\n if (!opts.alwaysNormalize) {\n return relativeURL;\n }\n relativeParts.path = URLToolkit.normalizePath(relativeParts.path);\n return URLToolkit.buildURLFromParts(relativeParts);\n }\n var baseParts = URLToolkit.parseURL(baseURL);\n if (!baseParts) {\n throw new Error('Error trying to parse base URL.');\n }\n if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {\n // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc\n // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'\n var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);\n baseParts.netLoc = pathParts[1];\n baseParts.path = pathParts[2];\n }\n if (baseParts.netLoc && !baseParts.path) {\n baseParts.path = '/';\n }\n var builtParts = {\n // 2c) Otherwise, the embedded URL inherits the scheme of\n // the base URL.\n scheme: baseParts.scheme,\n netLoc: relativeParts.netLoc,\n path: null,\n params: relativeParts.params,\n query: relativeParts.query,\n fragment: relativeParts.fragment,\n };\n if (!relativeParts.netLoc) {\n // 3) If the embedded URL's is non-empty, we skip to\n // Step 7. Otherwise, the embedded URL inherits the \n // (if any) of the base URL.\n builtParts.netLoc = baseParts.netLoc;\n // 4) If the embedded URL path is preceded by a slash \"/\", the\n // path is not relative and we skip to Step 7.\n if (relativeParts.path[0] !== '/') {\n if (!relativeParts.path) {\n // 5) If the embedded URL path is empty (and not preceded by a\n // slash), then the embedded URL inherits the base URL path\n builtParts.path = baseParts.path;\n // 5a) if the embedded URL's is non-empty, we skip to\n // step 7; otherwise, it inherits the of the base\n // URL (if any) and\n if (!relativeParts.params) {\n builtParts.params = baseParts.params;\n // 5b) if the embedded URL's is non-empty, we skip to\n // step 7; otherwise, it inherits the of the base\n // URL (if any) and we skip to step 7.\n if (!relativeParts.query) {\n builtParts.query = baseParts.query;\n }\n }\n } else {\n // 6) The last segment of the base URL's path (anything\n // following the rightmost slash \"/\", or the entire path if no\n // slash is present) is removed and the embedded URL's path is\n // appended in its place.\n var baseURLPath = baseParts.path;\n var newPath =\n baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) +\n relativeParts.path;\n builtParts.path = URLToolkit.normalizePath(newPath);\n }\n }\n }\n if (builtParts.path === null) {\n builtParts.path = opts.alwaysNormalize\n ? URLToolkit.normalizePath(relativeParts.path)\n : relativeParts.path;\n }\n return URLToolkit.buildURLFromParts(builtParts);\n },\n parseURL: function (url) {\n var parts = URL_REGEX.exec(url);\n if (!parts) {\n return null;\n }\n return {\n scheme: parts[1] || '',\n netLoc: parts[2] || '',\n path: parts[3] || '',\n params: parts[4] || '',\n query: parts[5] || '',\n fragment: parts[6] || '',\n };\n },\n normalizePath: function (path) {\n // The following operations are\n // then applied, in order, to the new path:\n // 6a) All occurrences of \"./\", where \".\" is a complete path\n // segment, are removed.\n // 6b) If the path ends with \".\" as a complete path segment,\n // that \".\" is removed.\n path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');\n // 6c) All occurrences of \"/../\", where is a\n // complete path segment not equal to \"..\", are removed.\n // Removal of these path segments is performed iteratively,\n // removing the leftmost matching pattern on each iteration,\n // until no matching pattern remains.\n // 6d) If the path ends with \"/..\", where is a\n // complete path segment not equal to \"..\", that\n // \"/..\" is removed.\n while (\n path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length\n ) {}\n return path.split('').reverse().join('');\n },\n buildURLFromParts: function (parts) {\n return (\n parts.scheme +\n parts.netLoc +\n parts.path +\n parts.params +\n parts.query +\n parts.fragment\n );\n },\n };\n\n if (typeof exports === 'object' && typeof module === 'object')\n module.exports = URLToolkit;\n else if (typeof define === 'function' && define.amd)\n define([], function () {\n return URLToolkit;\n });\n else if (typeof exports === 'object') exports['URLToolkit'] = URLToolkit;\n else root['URLToolkit'] = URLToolkit;\n})(this);\n","/**\n * @license React\n * use-sync-external-store-shim.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n'use strict';var e=require(\"react\");function h(a,b){return a===b&&(0!==a||1/a===1/b)||a!==a&&b!==b}var k=\"function\"===typeof Object.is?Object.is:h,l=e.useState,m=e.useEffect,n=e.useLayoutEffect,p=e.useDebugValue;function q(a,b){var d=b(),f=l({inst:{value:d,getSnapshot:b}}),c=f[0].inst,g=f[1];n(function(){c.value=d;c.getSnapshot=b;r(c)&&g({inst:c})},[a,d,b]);m(function(){r(c)&&g({inst:c});return a(function(){r(c)&&g({inst:c})})},[a]);p(d);return d}\nfunction r(a){var b=a.getSnapshot;a=a.value;try{var d=b();return!k(a,d)}catch(f){return!0}}function t(a,b){return b()}var u=\"undefined\"===typeof window||\"undefined\"===typeof window.document||\"undefined\"===typeof window.document.createElement?t:q;exports.useSyncExternalStore=void 0!==e.useSyncExternalStore?e.useSyncExternalStore:u;\n","/**\n * @license React\n * use-sync-external-store-shim/with-selector.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n'use strict';var h=require(\"react\"),n=require(\"use-sync-external-store/shim\");function p(a,b){return a===b&&(0!==a||1/a===1/b)||a!==a&&b!==b}var q=\"function\"===typeof Object.is?Object.is:p,r=n.useSyncExternalStore,t=h.useRef,u=h.useEffect,v=h.useMemo,w=h.useDebugValue;\nexports.useSyncExternalStoreWithSelector=function(a,b,e,l,g){var c=t(null);if(null===c.current){var f={hasValue:!1,value:null};c.current=f}else f=c.current;c=v(function(){function a(a){if(!c){c=!0;d=a;a=l(a);if(void 0!==g&&f.hasValue){var b=f.value;if(g(b,a))return k=b}return k=a}b=k;if(q(d,a))return b;var e=l(a);if(void 0!==g&&g(b,e))return b;d=a;return k=e}var c=!1,d,k,m=void 0===e?null:e;return[function(){return a(b())},null===m?void 0:function(){return a(m())}]},[b,e,l,g]);var d=r(a,c[0],c[1]);\nu(function(){f.hasValue=!0;f.value=d},[d]);w(d);return d};\n","'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n module.exports = require('../cjs/use-sync-external-store-shim.production.min.js');\n} else {\n module.exports = require('../cjs/use-sync-external-store-shim.development.js');\n}\n","'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n module.exports = require('../cjs/use-sync-external-store-shim/with-selector.production.min.js');\n} else {\n module.exports = require('../cjs/use-sync-external-store-shim/with-selector.development.js');\n}\n","import URLToolkit from 'url-toolkit';\nimport window from 'global/window';\nvar DEFAULT_LOCATION = 'http://example.com';\n\nvar resolveUrl = function resolveUrl(baseUrl, relativeUrl) {\n // return early if we don't need to resolve\n if (/^[a-z]+:/i.test(relativeUrl)) {\n return relativeUrl;\n } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location\n\n\n if (/^data:/.test(baseUrl)) {\n baseUrl = window.location && window.location.href || '';\n } // IE11 supports URL but not the URL constructor\n // feature detect the behavior we want\n\n\n var nativeURL = typeof window.URL === 'function';\n var protocolLess = /^\\/\\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)\n // and if baseUrl isn't an absolute url\n\n var removeLocation = !window.location && !/\\/\\//i.test(baseUrl); // if the base URL is relative then combine with the current location\n\n if (nativeURL) {\n baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);\n } else if (!/\\/\\//i.test(baseUrl)) {\n baseUrl = URLToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n }\n\n if (nativeURL) {\n var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol\n // and if we're location-less, remove the location\n // otherwise, return the url unmodified\n\n if (removeLocation) {\n return newUrl.href.slice(DEFAULT_LOCATION.length);\n } else if (protocolLess) {\n return newUrl.href.slice(newUrl.protocol.length);\n }\n\n return newUrl.href;\n }\n\n return URLToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n};\n\nexport default resolveUrl;","/**\n * @file stream.js\n */\n\n/**\n * A lightweight readable stream implemention that handles event dispatching.\n *\n * @class Stream\n */\nvar Stream = /*#__PURE__*/function () {\n function Stream() {\n this.listeners = {};\n }\n /**\n * Add a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener the callback to be invoked when an event of\n * the specified type occurs\n */\n\n\n var _proto = Stream.prototype;\n\n _proto.on = function on(type, listener) {\n if (!this.listeners[type]) {\n this.listeners[type] = [];\n }\n\n this.listeners[type].push(listener);\n }\n /**\n * Remove a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener a function previously registered for this\n * type of event through `on`\n * @return {boolean} if we could turn it off or not\n */\n ;\n\n _proto.off = function off(type, listener) {\n if (!this.listeners[type]) {\n return false;\n }\n\n var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n // In Video.js we slice listener functions\n // on trigger so that it does not mess up the order\n // while we loop through.\n //\n // Here we slice on off so that the loop in trigger\n // can continue using it's old reference to loop without\n // messing up the order.\n\n this.listeners[type] = this.listeners[type].slice(0);\n this.listeners[type].splice(index, 1);\n return index > -1;\n }\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n *\n * @param {string} type the event name\n */\n ;\n\n _proto.trigger = function trigger(type) {\n var callbacks = this.listeners[type];\n\n if (!callbacks) {\n return;\n } // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n\n\n if (arguments.length === 2) {\n var length = callbacks.length;\n\n for (var i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n var args = Array.prototype.slice.call(arguments, 1);\n var _length = callbacks.length;\n\n for (var _i = 0; _i < _length; ++_i) {\n callbacks[_i].apply(this, args);\n }\n }\n }\n /**\n * Destroys the stream and cleans up.\n */\n ;\n\n _proto.dispose = function dispose() {\n this.listeners = {};\n }\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n *\n * @param {Stream} destination the stream that will receive all `data` events\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */\n ;\n\n _proto.pipe = function pipe(destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n };\n\n return Stream;\n}();\n\nexport { Stream as default };","import window from 'global/window';\n\nvar atob = function atob(s) {\n return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n};\n\nexport default function decodeB64ToUint8Array(b64Text) {\n var decodedString = atob(b64Text);\n var array = new Uint8Array(decodedString.length);\n\n for (var i = 0; i < decodedString.length; i++) {\n array[i] = decodedString.charCodeAt(i);\n }\n\n return array;\n}","/*! @name m3u8-parser @version 4.8.0 @license Apache-2.0 */\nimport _inheritsLoose from '@babel/runtime/helpers/inheritsLoose';\nimport Stream from '@videojs/vhs-utils/es/stream.js';\nimport _extends from '@babel/runtime/helpers/extends';\nimport _assertThisInitialized from '@babel/runtime/helpers/assertThisInitialized';\nimport decodeB64ToUint8Array from '@videojs/vhs-utils/es/decode-b64-to-uint8-array.js';\n\n/**\n * A stream that buffers string input and generates a `data` event for each\n * line.\n *\n * @class LineStream\n * @extends Stream\n */\n\nvar LineStream = /*#__PURE__*/function (_Stream) {\n _inheritsLoose(LineStream, _Stream);\n\n function LineStream() {\n var _this;\n\n _this = _Stream.call(this) || this;\n _this.buffer = '';\n return _this;\n }\n /**\n * Add new data to be parsed.\n *\n * @param {string} data the text to process\n */\n\n\n var _proto = LineStream.prototype;\n\n _proto.push = function push(data) {\n var nextNewline;\n this.buffer += data;\n nextNewline = this.buffer.indexOf('\\n');\n\n for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\\n')) {\n this.trigger('data', this.buffer.substring(0, nextNewline));\n this.buffer = this.buffer.substring(nextNewline + 1);\n }\n };\n\n return LineStream;\n}(Stream);\n\nvar TAB = String.fromCharCode(0x09);\n\nvar parseByterange = function parseByterange(byterangeString) {\n // optionally match and capture 0+ digits before `@`\n // optionally match and capture 0+ digits after `@`\n var match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || '');\n var result = {};\n\n if (match[1]) {\n result.length = parseInt(match[1], 10);\n }\n\n if (match[2]) {\n result.offset = parseInt(match[2], 10);\n }\n\n return result;\n};\n/**\n * \"forgiving\" attribute list psuedo-grammar:\n * attributes -> keyvalue (',' keyvalue)*\n * keyvalue -> key '=' value\n * key -> [^=]*\n * value -> '\"' [^\"]* '\"' | [^,]*\n */\n\n\nvar attributeSeparator = function attributeSeparator() {\n var key = '[^=]*';\n var value = '\"[^\"]*\"|[^,]*';\n var keyvalue = '(?:' + key + ')=(?:' + value + ')';\n return new RegExp('(?:^|,)(' + keyvalue + ')');\n};\n/**\n * Parse attributes from a line given the separator\n *\n * @param {string} attributes the attribute line to parse\n */\n\n\nvar parseAttributes = function parseAttributes(attributes) {\n // split the string using attributes as the separator\n var attrs = attributes.split(attributeSeparator());\n var result = {};\n var i = attrs.length;\n var attr;\n\n while (i--) {\n // filter out unmatched portions of the string\n if (attrs[i] === '') {\n continue;\n } // split the key and value\n\n\n attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value\n\n attr[0] = attr[0].replace(/^\\s+|\\s+$/g, '');\n attr[1] = attr[1].replace(/^\\s+|\\s+$/g, '');\n attr[1] = attr[1].replace(/^['\"](.*)['\"]$/g, '$1');\n result[attr[0]] = attr[1];\n }\n\n return result;\n};\n/**\n * A line-level M3U8 parser event stream. It expects to receive input one\n * line at a time and performs a context-free parse of its contents. A stream\n * interpretation of a manifest can be useful if the manifest is expected to\n * be too large to fit comfortably into memory or the entirety of the input\n * is not immediately available. Otherwise, it's probably much easier to work\n * with a regular `Parser` object.\n *\n * Produces `data` events with an object that captures the parser's\n * interpretation of the input. That object has a property `tag` that is one\n * of `uri`, `comment`, or `tag`. URIs only have a single additional\n * property, `line`, which captures the entirety of the input without\n * interpretation. Comments similarly have a single additional property\n * `text` which is the input without the leading `#`.\n *\n * Tags always have a property `tagType` which is the lower-cased version of\n * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,\n * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized\n * tags are given the tag type `unknown` and a single additional property\n * `data` with the remainder of the input.\n *\n * @class ParseStream\n * @extends Stream\n */\n\n\nvar ParseStream = /*#__PURE__*/function (_Stream) {\n _inheritsLoose(ParseStream, _Stream);\n\n function ParseStream() {\n var _this;\n\n _this = _Stream.call(this) || this;\n _this.customParsers = [];\n _this.tagMappers = [];\n return _this;\n }\n /**\n * Parses an additional line of input.\n *\n * @param {string} line a single line of an M3U8 file to parse\n */\n\n\n var _proto = ParseStream.prototype;\n\n _proto.push = function push(line) {\n var _this2 = this;\n\n var match;\n var event; // strip whitespace\n\n line = line.trim();\n\n if (line.length === 0) {\n // ignore empty lines\n return;\n } // URIs\n\n\n if (line[0] !== '#') {\n this.trigger('data', {\n type: 'uri',\n uri: line\n });\n return;\n } // map tags\n\n\n var newLines = this.tagMappers.reduce(function (acc, mapper) {\n var mappedLine = mapper(line); // skip if unchanged\n\n if (mappedLine === line) {\n return acc;\n }\n\n return acc.concat([mappedLine]);\n }, [line]);\n newLines.forEach(function (newLine) {\n for (var i = 0; i < _this2.customParsers.length; i++) {\n if (_this2.customParsers[i].call(_this2, newLine)) {\n return;\n }\n } // Comments\n\n\n if (newLine.indexOf('#EXT') !== 0) {\n _this2.trigger('data', {\n type: 'comment',\n text: newLine.slice(1)\n });\n\n return;\n } // strip off any carriage returns here so the regex matching\n // doesn't have to account for them.\n\n\n newLine = newLine.replace('\\r', ''); // Tags\n\n match = /^#EXTM3U/.exec(newLine);\n\n if (match) {\n _this2.trigger('data', {\n type: 'tag',\n tagType: 'm3u'\n });\n\n return;\n }\n\n match = /^#EXTINF:?([0-9\\.]*)?,?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'inf'\n };\n\n if (match[1]) {\n event.duration = parseFloat(match[1]);\n }\n\n if (match[2]) {\n event.title = match[2];\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-TARGETDURATION:?([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'targetduration'\n };\n\n if (match[1]) {\n event.duration = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-VERSION:?([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'version'\n };\n\n if (match[1]) {\n event.version = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-MEDIA-SEQUENCE:?(\\-?[0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'media-sequence'\n };\n\n if (match[1]) {\n event.number = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-DISCONTINUITY-SEQUENCE:?(\\-?[0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'discontinuity-sequence'\n };\n\n if (match[1]) {\n event.number = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-PLAYLIST-TYPE:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'playlist-type'\n };\n\n if (match[1]) {\n event.playlistType = match[1];\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-BYTERANGE:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = _extends(parseByterange(match[1]), {\n type: 'tag',\n tagType: 'byterange'\n });\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-ALLOW-CACHE:?(YES|NO)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'allow-cache'\n };\n\n if (match[1]) {\n event.allowed = !/NO/.test(match[1]);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-MAP:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'map'\n };\n\n if (match[1]) {\n var attributes = parseAttributes(match[1]);\n\n if (attributes.URI) {\n event.uri = attributes.URI;\n }\n\n if (attributes.BYTERANGE) {\n event.byterange = parseByterange(attributes.BYTERANGE);\n }\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-STREAM-INF:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'stream-inf'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n\n if (event.attributes.RESOLUTION) {\n var split = event.attributes.RESOLUTION.split('x');\n var resolution = {};\n\n if (split[0]) {\n resolution.width = parseInt(split[0], 10);\n }\n\n if (split[1]) {\n resolution.height = parseInt(split[1], 10);\n }\n\n event.attributes.RESOLUTION = resolution;\n }\n\n if (event.attributes.BANDWIDTH) {\n event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);\n }\n\n if (event.attributes['FRAME-RATE']) {\n event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']);\n }\n\n if (event.attributes['PROGRAM-ID']) {\n event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);\n }\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-MEDIA:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'media'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-ENDLIST/.exec(newLine);\n\n if (match) {\n _this2.trigger('data', {\n type: 'tag',\n tagType: 'endlist'\n });\n\n return;\n }\n\n match = /^#EXT-X-DISCONTINUITY/.exec(newLine);\n\n if (match) {\n _this2.trigger('data', {\n type: 'tag',\n tagType: 'discontinuity'\n });\n\n return;\n }\n\n match = /^#EXT-X-PROGRAM-DATE-TIME:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'program-date-time'\n };\n\n if (match[1]) {\n event.dateTimeString = match[1];\n event.dateTimeObject = new Date(match[1]);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-KEY:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'key'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]); // parse the IV string into a Uint32Array\n\n if (event.attributes.IV) {\n if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {\n event.attributes.IV = event.attributes.IV.substring(2);\n }\n\n event.attributes.IV = event.attributes.IV.match(/.{8}/g);\n event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);\n event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);\n event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);\n event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);\n event.attributes.IV = new Uint32Array(event.attributes.IV);\n }\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-START:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'start'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);\n event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-CUE-OUT-CONT:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-out-cont'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-CUE-OUT:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-out'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-CUE-IN:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-in'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-SKIP:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'skip'\n };\n event.attributes = parseAttributes(match[1]);\n\n if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) {\n event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10);\n }\n\n if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) {\n event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-PART:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'part'\n };\n event.attributes = parseAttributes(match[1]);\n ['DURATION'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n ['INDEPENDENT', 'GAP'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = /YES/.test(event.attributes[key]);\n }\n });\n\n if (event.attributes.hasOwnProperty('BYTERANGE')) {\n event.attributes.byterange = parseByterange(event.attributes.BYTERANGE);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'server-control'\n };\n event.attributes = parseAttributes(match[1]);\n ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = /YES/.test(event.attributes[key]);\n }\n });\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'part-inf'\n };\n event.attributes = parseAttributes(match[1]);\n ['PART-TARGET'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'preload-hint'\n };\n event.attributes = parseAttributes(match[1]);\n ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseInt(event.attributes[key], 10);\n var subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset';\n event.attributes.byterange = event.attributes.byterange || {};\n event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object.\n\n delete event.attributes[key];\n }\n });\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'rendition-report'\n };\n event.attributes = parseAttributes(match[1]);\n ['LAST-MSN', 'LAST-PART'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseInt(event.attributes[key], 10);\n }\n });\n\n _this2.trigger('data', event);\n\n return;\n } // unknown tag type\n\n\n _this2.trigger('data', {\n type: 'tag',\n data: newLine.slice(4)\n });\n });\n }\n /**\n * Add a parser for custom headers\n *\n * @param {Object} options a map of options for the added parser\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {string} options.customType the custom type to register to the output\n * @param {Function} [options.dataParser] function to parse the line into an object\n * @param {boolean} [options.segment] should tag data be attached to the segment object\n */\n ;\n\n _proto.addParser = function addParser(_ref) {\n var _this3 = this;\n\n var expression = _ref.expression,\n customType = _ref.customType,\n dataParser = _ref.dataParser,\n segment = _ref.segment;\n\n if (typeof dataParser !== 'function') {\n dataParser = function dataParser(line) {\n return line;\n };\n }\n\n this.customParsers.push(function (line) {\n var match = expression.exec(line);\n\n if (match) {\n _this3.trigger('data', {\n type: 'custom',\n data: dataParser(line),\n customType: customType,\n segment: segment\n });\n\n return true;\n }\n });\n }\n /**\n * Add a custom header mapper\n *\n * @param {Object} options\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {Function} options.map function to translate tag into a different tag\n */\n ;\n\n _proto.addTagMapper = function addTagMapper(_ref2) {\n var expression = _ref2.expression,\n map = _ref2.map;\n\n var mapFn = function mapFn(line) {\n if (expression.test(line)) {\n return map(line);\n }\n\n return line;\n };\n\n this.tagMappers.push(mapFn);\n };\n\n return ParseStream;\n}(Stream);\n\nvar camelCase = function camelCase(str) {\n return str.toLowerCase().replace(/-(\\w)/g, function (a) {\n return a[1].toUpperCase();\n });\n};\n\nvar camelCaseKeys = function camelCaseKeys(attributes) {\n var result = {};\n Object.keys(attributes).forEach(function (key) {\n result[camelCase(key)] = attributes[key];\n });\n return result;\n}; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration\n// we need this helper because defaults are based upon targetDuration and\n// partTargetDuration being set, but they may not be if SERVER-CONTROL appears before\n// target durations are set.\n\n\nvar setHoldBack = function setHoldBack(manifest) {\n var serverControl = manifest.serverControl,\n targetDuration = manifest.targetDuration,\n partTargetDuration = manifest.partTargetDuration;\n\n if (!serverControl) {\n return;\n }\n\n var tag = '#EXT-X-SERVER-CONTROL';\n var hb = 'holdBack';\n var phb = 'partHoldBack';\n var minTargetDuration = targetDuration && targetDuration * 3;\n var minPartDuration = partTargetDuration && partTargetDuration * 2;\n\n if (targetDuration && !serverControl.hasOwnProperty(hb)) {\n serverControl[hb] = minTargetDuration;\n this.trigger('info', {\n message: tag + \" defaulting HOLD-BACK to targetDuration * 3 (\" + minTargetDuration + \").\"\n });\n }\n\n if (minTargetDuration && serverControl[hb] < minTargetDuration) {\n this.trigger('warn', {\n message: tag + \" clamping HOLD-BACK (\" + serverControl[hb] + \") to targetDuration * 3 (\" + minTargetDuration + \")\"\n });\n serverControl[hb] = minTargetDuration;\n } // default no part hold back to part target duration * 3\n\n\n if (partTargetDuration && !serverControl.hasOwnProperty(phb)) {\n serverControl[phb] = partTargetDuration * 3;\n this.trigger('info', {\n message: tag + \" defaulting PART-HOLD-BACK to partTargetDuration * 3 (\" + serverControl[phb] + \").\"\n });\n } // if part hold back is too small default it to part target duration * 2\n\n\n if (partTargetDuration && serverControl[phb] < minPartDuration) {\n this.trigger('warn', {\n message: tag + \" clamping PART-HOLD-BACK (\" + serverControl[phb] + \") to partTargetDuration * 2 (\" + minPartDuration + \").\"\n });\n serverControl[phb] = minPartDuration;\n }\n};\n/**\n * A parser for M3U8 files. The current interpretation of the input is\n * exposed as a property `manifest` on parser objects. It's just two lines to\n * create and parse a manifest once you have the contents available as a string:\n *\n * ```js\n * var parser = new m3u8.Parser();\n * parser.push(xhr.responseText);\n * ```\n *\n * New input can later be applied to update the manifest object by calling\n * `push` again.\n *\n * The parser attempts to create a usable manifest object even if the\n * underlying input is somewhat nonsensical. It emits `info` and `warning`\n * events during the parse if it encounters input that seems invalid or\n * requires some property of the manifest object to be defaulted.\n *\n * @class Parser\n * @extends Stream\n */\n\n\nvar Parser = /*#__PURE__*/function (_Stream) {\n _inheritsLoose(Parser, _Stream);\n\n function Parser() {\n var _this;\n\n _this = _Stream.call(this) || this;\n _this.lineStream = new LineStream();\n _this.parseStream = new ParseStream();\n\n _this.lineStream.pipe(_this.parseStream);\n /* eslint-disable consistent-this */\n\n\n var self = _assertThisInitialized(_this);\n /* eslint-enable consistent-this */\n\n\n var uris = [];\n var currentUri = {}; // if specified, the active EXT-X-MAP definition\n\n var currentMap; // if specified, the active decryption key\n\n var _key;\n\n var hasParts = false;\n\n var noop = function noop() {};\n\n var defaultMediaGroups = {\n 'AUDIO': {},\n 'VIDEO': {},\n 'CLOSED-CAPTIONS': {},\n 'SUBTITLES': {}\n }; // This is the Widevine UUID from DASH IF IOP. The same exact string is\n // used in MPDs with Widevine encrypted streams.\n\n var widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities\n\n var currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data\n\n _this.manifest = {\n allowCache: true,\n discontinuityStarts: [],\n segments: []\n }; // keep track of the last seen segment's byte range end, as segments are not required\n // to provide the offset, in which case it defaults to the next byte after the\n // previous segment\n\n var lastByterangeEnd = 0; // keep track of the last seen part's byte range end.\n\n var lastPartByterangeEnd = 0;\n\n _this.on('end', function () {\n // only add preloadSegment if we don't yet have a uri for it.\n // and we actually have parts/preloadHints\n if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) {\n return;\n }\n\n if (!currentUri.map && currentMap) {\n currentUri.map = currentMap;\n }\n\n if (!currentUri.key && _key) {\n currentUri.key = _key;\n }\n\n if (!currentUri.timeline && typeof currentTimeline === 'number') {\n currentUri.timeline = currentTimeline;\n }\n\n _this.manifest.preloadSegment = currentUri;\n }); // update the manifest with the m3u8 entry from the parse stream\n\n\n _this.parseStream.on('data', function (entry) {\n var mediaGroup;\n var rendition;\n ({\n tag: function tag() {\n // switch based on the tag type\n (({\n version: function version() {\n if (entry.version) {\n this.manifest.version = entry.version;\n }\n },\n 'allow-cache': function allowCache() {\n this.manifest.allowCache = entry.allowed;\n\n if (!('allowed' in entry)) {\n this.trigger('info', {\n message: 'defaulting allowCache to YES'\n });\n this.manifest.allowCache = true;\n }\n },\n byterange: function byterange() {\n var byterange = {};\n\n if ('length' in entry) {\n currentUri.byterange = byterange;\n byterange.length = entry.length;\n\n if (!('offset' in entry)) {\n /*\n * From the latest spec (as of this writing):\n * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2\n *\n * Same text since EXT-X-BYTERANGE's introduction in draft 7:\n * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)\n *\n * \"If o [offset] is not present, the sub-range begins at the next byte\n * following the sub-range of the previous media segment.\"\n */\n entry.offset = lastByterangeEnd;\n }\n }\n\n if ('offset' in entry) {\n currentUri.byterange = byterange;\n byterange.offset = entry.offset;\n }\n\n lastByterangeEnd = byterange.offset + byterange.length;\n },\n endlist: function endlist() {\n this.manifest.endList = true;\n },\n inf: function inf() {\n if (!('mediaSequence' in this.manifest)) {\n this.manifest.mediaSequence = 0;\n this.trigger('info', {\n message: 'defaulting media sequence to zero'\n });\n }\n\n if (!('discontinuitySequence' in this.manifest)) {\n this.manifest.discontinuitySequence = 0;\n this.trigger('info', {\n message: 'defaulting discontinuity sequence to zero'\n });\n }\n\n if (entry.duration > 0) {\n currentUri.duration = entry.duration;\n }\n\n if (entry.duration === 0) {\n currentUri.duration = 0.01;\n this.trigger('info', {\n message: 'updating zero segment duration to a small value'\n });\n }\n\n this.manifest.segments = uris;\n },\n key: function key() {\n if (!entry.attributes) {\n this.trigger('warn', {\n message: 'ignoring key declaration without attribute list'\n });\n return;\n } // clear the active encryption key\n\n\n if (entry.attributes.METHOD === 'NONE') {\n _key = null;\n return;\n }\n\n if (!entry.attributes.URI) {\n this.trigger('warn', {\n message: 'ignoring key declaration without URI'\n });\n return;\n }\n\n if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') {\n this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n this.manifest.contentProtection['com.apple.fps.1_0'] = {\n attributes: entry.attributes\n };\n return;\n }\n\n if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') {\n this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n this.manifest.contentProtection['com.microsoft.playready'] = {\n uri: entry.attributes.URI\n };\n return;\n } // check if the content is encrypted for Widevine\n // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf\n\n\n if (entry.attributes.KEYFORMAT === widevineUuid) {\n var VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];\n\n if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {\n this.trigger('warn', {\n message: 'invalid key method provided for Widevine'\n });\n return;\n }\n\n if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {\n this.trigger('warn', {\n message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'\n });\n }\n\n if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {\n this.trigger('warn', {\n message: 'invalid key URI provided for Widevine'\n });\n return;\n }\n\n if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {\n this.trigger('warn', {\n message: 'invalid key ID provided for Widevine'\n });\n return;\n } // if Widevine key attributes are valid, store them as `contentProtection`\n // on the manifest to emulate Widevine tag structure in a DASH mpd\n\n\n this.manifest.contentProtection = this.manifest.contentProtection || {};\n this.manifest.contentProtection['com.widevine.alpha'] = {\n attributes: {\n schemeIdUri: entry.attributes.KEYFORMAT,\n // remove '0x' from the key id string\n keyId: entry.attributes.KEYID.substring(2)\n },\n // decode the base64-encoded PSSH box\n pssh: decodeB64ToUint8Array(entry.attributes.URI.split(',')[1])\n };\n return;\n }\n\n if (!entry.attributes.METHOD) {\n this.trigger('warn', {\n message: 'defaulting key method to AES-128'\n });\n } // setup an encryption key for upcoming segments\n\n\n _key = {\n method: entry.attributes.METHOD || 'AES-128',\n uri: entry.attributes.URI\n };\n\n if (typeof entry.attributes.IV !== 'undefined') {\n _key.iv = entry.attributes.IV;\n }\n },\n 'media-sequence': function mediaSequence() {\n if (!isFinite(entry.number)) {\n this.trigger('warn', {\n message: 'ignoring invalid media sequence: ' + entry.number\n });\n return;\n }\n\n this.manifest.mediaSequence = entry.number;\n },\n 'discontinuity-sequence': function discontinuitySequence() {\n if (!isFinite(entry.number)) {\n this.trigger('warn', {\n message: 'ignoring invalid discontinuity sequence: ' + entry.number\n });\n return;\n }\n\n this.manifest.discontinuitySequence = entry.number;\n currentTimeline = entry.number;\n },\n 'playlist-type': function playlistType() {\n if (!/VOD|EVENT/.test(entry.playlistType)) {\n this.trigger('warn', {\n message: 'ignoring unknown playlist type: ' + entry.playlist\n });\n return;\n }\n\n this.manifest.playlistType = entry.playlistType;\n },\n map: function map() {\n currentMap = {};\n\n if (entry.uri) {\n currentMap.uri = entry.uri;\n }\n\n if (entry.byterange) {\n currentMap.byterange = entry.byterange;\n }\n\n if (_key) {\n currentMap.key = _key;\n }\n },\n 'stream-inf': function streamInf() {\n this.manifest.playlists = uris;\n this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n if (!entry.attributes) {\n this.trigger('warn', {\n message: 'ignoring empty stream-inf attributes'\n });\n return;\n }\n\n if (!currentUri.attributes) {\n currentUri.attributes = {};\n }\n\n _extends(currentUri.attributes, entry.attributes);\n },\n media: function media() {\n this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {\n this.trigger('warn', {\n message: 'ignoring incomplete or missing media group'\n });\n return;\n } // find the media group, creating defaults as necessary\n\n\n var mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];\n mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};\n mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata\n\n rendition = {\n default: /yes/i.test(entry.attributes.DEFAULT)\n };\n\n if (rendition.default) {\n rendition.autoselect = true;\n } else {\n rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);\n }\n\n if (entry.attributes.LANGUAGE) {\n rendition.language = entry.attributes.LANGUAGE;\n }\n\n if (entry.attributes.URI) {\n rendition.uri = entry.attributes.URI;\n }\n\n if (entry.attributes['INSTREAM-ID']) {\n rendition.instreamId = entry.attributes['INSTREAM-ID'];\n }\n\n if (entry.attributes.CHARACTERISTICS) {\n rendition.characteristics = entry.attributes.CHARACTERISTICS;\n }\n\n if (entry.attributes.FORCED) {\n rendition.forced = /yes/i.test(entry.attributes.FORCED);\n } // insert the new rendition\n\n\n mediaGroup[entry.attributes.NAME] = rendition;\n },\n discontinuity: function discontinuity() {\n currentTimeline += 1;\n currentUri.discontinuity = true;\n this.manifest.discontinuityStarts.push(uris.length);\n },\n 'program-date-time': function programDateTime() {\n if (typeof this.manifest.dateTimeString === 'undefined') {\n // PROGRAM-DATE-TIME is a media-segment tag, but for backwards\n // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag\n // to the manifest object\n // TODO: Consider removing this in future major version\n this.manifest.dateTimeString = entry.dateTimeString;\n this.manifest.dateTimeObject = entry.dateTimeObject;\n }\n\n currentUri.dateTimeString = entry.dateTimeString;\n currentUri.dateTimeObject = entry.dateTimeObject;\n },\n targetduration: function targetduration() {\n if (!isFinite(entry.duration) || entry.duration < 0) {\n this.trigger('warn', {\n message: 'ignoring invalid target duration: ' + entry.duration\n });\n return;\n }\n\n this.manifest.targetDuration = entry.duration;\n setHoldBack.call(this, this.manifest);\n },\n start: function start() {\n if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {\n this.trigger('warn', {\n message: 'ignoring start declaration without appropriate attribute list'\n });\n return;\n }\n\n this.manifest.start = {\n timeOffset: entry.attributes['TIME-OFFSET'],\n precise: entry.attributes.PRECISE\n };\n },\n 'cue-out': function cueOut() {\n currentUri.cueOut = entry.data;\n },\n 'cue-out-cont': function cueOutCont() {\n currentUri.cueOutCont = entry.data;\n },\n 'cue-in': function cueIn() {\n currentUri.cueIn = entry.data;\n },\n 'skip': function skip() {\n this.manifest.skip = camelCaseKeys(entry.attributes);\n this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']);\n },\n 'part': function part() {\n var _this2 = this;\n\n hasParts = true; // parts are always specifed before a segment\n\n var segmentIndex = this.manifest.segments.length;\n var part = camelCaseKeys(entry.attributes);\n currentUri.parts = currentUri.parts || [];\n currentUri.parts.push(part);\n\n if (part.byterange) {\n if (!part.byterange.hasOwnProperty('offset')) {\n part.byterange.offset = lastPartByterangeEnd;\n }\n\n lastPartByterangeEnd = part.byterange.offset + part.byterange.length;\n }\n\n var partIndex = currentUri.parts.length - 1;\n this.warnOnMissingAttributes_(\"#EXT-X-PART #\" + partIndex + \" for segment #\" + segmentIndex, entry.attributes, ['URI', 'DURATION']);\n\n if (this.manifest.renditionReports) {\n this.manifest.renditionReports.forEach(function (r, i) {\n if (!r.hasOwnProperty('lastPart')) {\n _this2.trigger('warn', {\n message: \"#EXT-X-RENDITION-REPORT #\" + i + \" lacks required attribute(s): LAST-PART\"\n });\n }\n });\n }\n },\n 'server-control': function serverControl() {\n var attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes);\n\n if (!attrs.hasOwnProperty('canBlockReload')) {\n attrs.canBlockReload = false;\n this.trigger('info', {\n message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false'\n });\n }\n\n setHoldBack.call(this, this.manifest);\n\n if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) {\n this.trigger('warn', {\n message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set'\n });\n }\n },\n 'preload-hint': function preloadHint() {\n // parts are always specifed before a segment\n var segmentIndex = this.manifest.segments.length;\n var hint = camelCaseKeys(entry.attributes);\n var isPart = hint.type && hint.type === 'PART';\n currentUri.preloadHints = currentUri.preloadHints || [];\n currentUri.preloadHints.push(hint);\n\n if (hint.byterange) {\n if (!hint.byterange.hasOwnProperty('offset')) {\n // use last part byterange end or zero if not a part.\n hint.byterange.offset = isPart ? lastPartByterangeEnd : 0;\n\n if (isPart) {\n lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length;\n }\n }\n }\n\n var index = currentUri.preloadHints.length - 1;\n this.warnOnMissingAttributes_(\"#EXT-X-PRELOAD-HINT #\" + index + \" for segment #\" + segmentIndex, entry.attributes, ['TYPE', 'URI']);\n\n if (!hint.type) {\n return;\n } // search through all preload hints except for the current one for\n // a duplicate type.\n\n\n for (var i = 0; i < currentUri.preloadHints.length - 1; i++) {\n var otherHint = currentUri.preloadHints[i];\n\n if (!otherHint.type) {\n continue;\n }\n\n if (otherHint.type === hint.type) {\n this.trigger('warn', {\n message: \"#EXT-X-PRELOAD-HINT #\" + index + \" for segment #\" + segmentIndex + \" has the same TYPE \" + hint.type + \" as preload hint #\" + i\n });\n }\n }\n },\n 'rendition-report': function renditionReport() {\n var report = camelCaseKeys(entry.attributes);\n this.manifest.renditionReports = this.manifest.renditionReports || [];\n this.manifest.renditionReports.push(report);\n var index = this.manifest.renditionReports.length - 1;\n var required = ['LAST-MSN', 'URI'];\n\n if (hasParts) {\n required.push('LAST-PART');\n }\n\n this.warnOnMissingAttributes_(\"#EXT-X-RENDITION-REPORT #\" + index, entry.attributes, required);\n },\n 'part-inf': function partInf() {\n this.manifest.partInf = camelCaseKeys(entry.attributes);\n this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']);\n\n if (this.manifest.partInf.partTarget) {\n this.manifest.partTargetDuration = this.manifest.partInf.partTarget;\n }\n\n setHoldBack.call(this, this.manifest);\n }\n })[entry.tagType] || noop).call(self);\n },\n uri: function uri() {\n currentUri.uri = entry.uri;\n uris.push(currentUri); // if no explicit duration was declared, use the target duration\n\n if (this.manifest.targetDuration && !('duration' in currentUri)) {\n this.trigger('warn', {\n message: 'defaulting segment duration to the target duration'\n });\n currentUri.duration = this.manifest.targetDuration;\n } // annotate with encryption information, if necessary\n\n\n if (_key) {\n currentUri.key = _key;\n }\n\n currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary\n\n if (currentMap) {\n currentUri.map = currentMap;\n } // reset the last byterange end as it needs to be 0 between parts\n\n\n lastPartByterangeEnd = 0; // prepare for the next URI\n\n currentUri = {};\n },\n comment: function comment() {// comments are not important for playback\n },\n custom: function custom() {\n // if this is segment-level data attach the output to the segment\n if (entry.segment) {\n currentUri.custom = currentUri.custom || {};\n currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object\n } else {\n this.manifest.custom = this.manifest.custom || {};\n this.manifest.custom[entry.customType] = entry.data;\n }\n }\n })[entry.type].call(self);\n });\n\n return _this;\n }\n\n var _proto = Parser.prototype;\n\n _proto.warnOnMissingAttributes_ = function warnOnMissingAttributes_(identifier, attributes, required) {\n var missing = [];\n required.forEach(function (key) {\n if (!attributes.hasOwnProperty(key)) {\n missing.push(key);\n }\n });\n\n if (missing.length) {\n this.trigger('warn', {\n message: identifier + \" lacks required attribute(s): \" + missing.join(', ')\n });\n }\n }\n /**\n * Parse the input string and update the manifest object.\n *\n * @param {string} chunk a potentially incomplete portion of the manifest\n */\n ;\n\n _proto.push = function push(chunk) {\n this.lineStream.push(chunk);\n }\n /**\n * Flush any remaining input. This can be handy if the last line of an M3U8\n * manifest did not contain a trailing newline but the file has been\n * completely received.\n */\n ;\n\n _proto.end = function end() {\n // flush any buffered input\n this.lineStream.push('\\n');\n this.trigger('end');\n }\n /**\n * Add an additional parser for non-standard tags\n *\n * @param {Object} options a map of options for the added parser\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {string} options.type the type to register to the output\n * @param {Function} [options.dataParser] function to parse the line into an object\n * @param {boolean} [options.segment] should tag data be attached to the segment object\n */\n ;\n\n _proto.addParser = function addParser(options) {\n this.parseStream.addParser(options);\n }\n /**\n * Add a custom header mapper\n *\n * @param {Object} options\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {Function} options.map function to translate tag into a different tag\n */\n ;\n\n _proto.addTagMapper = function addTagMapper(options) {\n this.parseStream.addTagMapper(options);\n };\n\n return Parser;\n}(Stream);\n\nexport { LineStream, ParseStream, Parser };\n","import { stringToBytes, toUint8, bytesMatch, bytesToString, toHexString, padStart, bytesToNumber } from './byte-helpers.js';\nimport { getAvcCodec, getHvcCodec, getAv1Codec } from './codec-helpers.js';\nimport { parseOpusHead } from './opus-helpers.js';\n\nvar normalizePath = function normalizePath(path) {\n if (typeof path === 'string') {\n return stringToBytes(path);\n }\n\n if (typeof path === 'number') {\n return path;\n }\n\n return path;\n};\n\nvar normalizePaths = function normalizePaths(paths) {\n if (!Array.isArray(paths)) {\n return [normalizePath(paths)];\n }\n\n return paths.map(function (p) {\n return normalizePath(p);\n });\n};\n\nvar DESCRIPTORS;\nexport var parseDescriptors = function parseDescriptors(bytes) {\n bytes = toUint8(bytes);\n var results = [];\n var i = 0;\n\n while (bytes.length > i) {\n var tag = bytes[i];\n var size = 0;\n var headerSize = 0; // tag\n\n headerSize++;\n var byte = bytes[headerSize]; // first byte\n\n headerSize++;\n\n while (byte & 0x80) {\n size = (byte & 0x7F) << 7;\n byte = bytes[headerSize];\n headerSize++;\n }\n\n size += byte & 0x7F;\n\n for (var z = 0; z < DESCRIPTORS.length; z++) {\n var _DESCRIPTORS$z = DESCRIPTORS[z],\n id = _DESCRIPTORS$z.id,\n parser = _DESCRIPTORS$z.parser;\n\n if (tag === id) {\n results.push(parser(bytes.subarray(headerSize, headerSize + size)));\n break;\n }\n }\n\n i += size + headerSize;\n }\n\n return results;\n};\nDESCRIPTORS = [{\n id: 0x03,\n parser: function parser(bytes) {\n var desc = {\n tag: 0x03,\n id: bytes[0] << 8 | bytes[1],\n flags: bytes[2],\n size: 3,\n dependsOnEsId: 0,\n ocrEsId: 0,\n descriptors: [],\n url: ''\n }; // depends on es id\n\n if (desc.flags & 0x80) {\n desc.dependsOnEsId = bytes[desc.size] << 8 | bytes[desc.size + 1];\n desc.size += 2;\n } // url\n\n\n if (desc.flags & 0x40) {\n var len = bytes[desc.size];\n desc.url = bytesToString(bytes.subarray(desc.size + 1, desc.size + 1 + len));\n desc.size += len;\n } // ocr es id\n\n\n if (desc.flags & 0x20) {\n desc.ocrEsId = bytes[desc.size] << 8 | bytes[desc.size + 1];\n desc.size += 2;\n }\n\n desc.descriptors = parseDescriptors(bytes.subarray(desc.size)) || [];\n return desc;\n }\n}, {\n id: 0x04,\n parser: function parser(bytes) {\n // DecoderConfigDescriptor\n var desc = {\n tag: 0x04,\n oti: bytes[0],\n streamType: bytes[1],\n bufferSize: bytes[2] << 16 | bytes[3] << 8 | bytes[4],\n maxBitrate: bytes[5] << 24 | bytes[6] << 16 | bytes[7] << 8 | bytes[8],\n avgBitrate: bytes[9] << 24 | bytes[10] << 16 | bytes[11] << 8 | bytes[12],\n descriptors: parseDescriptors(bytes.subarray(13))\n };\n return desc;\n }\n}, {\n id: 0x05,\n parser: function parser(bytes) {\n // DecoderSpecificInfo\n return {\n tag: 0x05,\n bytes: bytes\n };\n }\n}, {\n id: 0x06,\n parser: function parser(bytes) {\n // SLConfigDescriptor\n return {\n tag: 0x06,\n bytes: bytes\n };\n }\n}];\n/**\n * find any number of boxes by name given a path to it in an iso bmff\n * such as mp4.\n *\n * @param {TypedArray} bytes\n * bytes for the iso bmff to search for boxes in\n *\n * @param {Uint8Array[]|string[]|string|Uint8Array} name\n * An array of paths or a single path representing the name\n * of boxes to search through in bytes. Paths may be\n * uint8 (character codes) or strings.\n *\n * @param {boolean} [complete=false]\n * Should we search only for complete boxes on the final path.\n * This is very useful when you do not want to get back partial boxes\n * in the case of streaming files.\n *\n * @return {Uint8Array[]}\n * An array of the end paths that we found.\n */\n\nexport var findBox = function findBox(bytes, paths, complete) {\n if (complete === void 0) {\n complete = false;\n }\n\n paths = normalizePaths(paths);\n bytes = toUint8(bytes);\n var results = [];\n\n if (!paths.length) {\n // short-circuit the search for empty paths\n return results;\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0;\n var type = bytes.subarray(i + 4, i + 8); // invalid box format.\n\n if (size === 0) {\n break;\n }\n\n var end = i + size;\n\n if (end > bytes.length) {\n // this box is bigger than the number of bytes we have\n // and complete is set, we cannot find any more boxes.\n if (complete) {\n break;\n }\n\n end = bytes.length;\n }\n\n var data = bytes.subarray(i + 8, end);\n\n if (bytesMatch(type, paths[0])) {\n if (paths.length === 1) {\n // this is the end of the path and we've found the box we were\n // looking for\n results.push(data);\n } else {\n // recursively search for the next box along the path\n results.push.apply(results, findBox(data, paths.slice(1), complete));\n }\n }\n\n i = end;\n } // we've finished searching all of bytes\n\n\n return results;\n};\n/**\n * Search for a single matching box by name in an iso bmff format like\n * mp4. This function is useful for finding codec boxes which\n * can be placed arbitrarily in sample descriptions depending\n * on the version of the file or file type.\n *\n * @param {TypedArray} bytes\n * bytes for the iso bmff to search for boxes in\n *\n * @param {string|Uint8Array} name\n * The name of the box to find.\n *\n * @return {Uint8Array[]}\n * a subarray of bytes representing the name boxed we found.\n */\n\nexport var findNamedBox = function findNamedBox(bytes, name) {\n name = normalizePath(name);\n\n if (!name.length) {\n // short-circuit the search for empty paths\n return bytes.subarray(bytes.length);\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n if (bytesMatch(bytes.subarray(i, i + name.length), name)) {\n var size = (bytes[i - 4] << 24 | bytes[i - 3] << 16 | bytes[i - 2] << 8 | bytes[i - 1]) >>> 0;\n var end = size > 1 ? i + size : bytes.byteLength;\n return bytes.subarray(i + 4, end);\n }\n\n i++;\n } // we've finished searching all of bytes\n\n\n return bytes.subarray(bytes.length);\n};\n\nvar parseSamples = function parseSamples(data, entrySize, parseEntry) {\n if (entrySize === void 0) {\n entrySize = 4;\n }\n\n if (parseEntry === void 0) {\n parseEntry = function parseEntry(d) {\n return bytesToNumber(d);\n };\n }\n\n var entries = [];\n\n if (!data || !data.length) {\n return entries;\n }\n\n var entryCount = bytesToNumber(data.subarray(4, 8));\n\n for (var i = 8; entryCount; i += entrySize, entryCount--) {\n entries.push(parseEntry(data.subarray(i, i + entrySize)));\n }\n\n return entries;\n};\n\nexport var buildFrameTable = function buildFrameTable(stbl, timescale) {\n var keySamples = parseSamples(findBox(stbl, ['stss'])[0]);\n var chunkOffsets = parseSamples(findBox(stbl, ['stco'])[0]);\n var timeToSamples = parseSamples(findBox(stbl, ['stts'])[0], 8, function (entry) {\n return {\n sampleCount: bytesToNumber(entry.subarray(0, 4)),\n sampleDelta: bytesToNumber(entry.subarray(4, 8))\n };\n });\n var samplesToChunks = parseSamples(findBox(stbl, ['stsc'])[0], 12, function (entry) {\n return {\n firstChunk: bytesToNumber(entry.subarray(0, 4)),\n samplesPerChunk: bytesToNumber(entry.subarray(4, 8)),\n sampleDescriptionIndex: bytesToNumber(entry.subarray(8, 12))\n };\n });\n var stsz = findBox(stbl, ['stsz'])[0]; // stsz starts with a 4 byte sampleSize which we don't need\n\n var sampleSizes = parseSamples(stsz && stsz.length && stsz.subarray(4) || null);\n var frames = [];\n\n for (var chunkIndex = 0; chunkIndex < chunkOffsets.length; chunkIndex++) {\n var samplesInChunk = void 0;\n\n for (var i = 0; i < samplesToChunks.length; i++) {\n var sampleToChunk = samplesToChunks[i];\n var isThisOne = chunkIndex + 1 >= sampleToChunk.firstChunk && (i + 1 >= samplesToChunks.length || chunkIndex + 1 < samplesToChunks[i + 1].firstChunk);\n\n if (isThisOne) {\n samplesInChunk = sampleToChunk.samplesPerChunk;\n break;\n }\n }\n\n var chunkOffset = chunkOffsets[chunkIndex];\n\n for (var _i = 0; _i < samplesInChunk; _i++) {\n var frameEnd = sampleSizes[frames.length]; // if we don't have key samples every frame is a keyframe\n\n var keyframe = !keySamples.length;\n\n if (keySamples.length && keySamples.indexOf(frames.length + 1) !== -1) {\n keyframe = true;\n }\n\n var frame = {\n keyframe: keyframe,\n start: chunkOffset,\n end: chunkOffset + frameEnd\n };\n\n for (var k = 0; k < timeToSamples.length; k++) {\n var _timeToSamples$k = timeToSamples[k],\n sampleCount = _timeToSamples$k.sampleCount,\n sampleDelta = _timeToSamples$k.sampleDelta;\n\n if (frames.length <= sampleCount) {\n // ms to ns\n var lastTimestamp = frames.length ? frames[frames.length - 1].timestamp : 0;\n frame.timestamp = lastTimestamp + sampleDelta / timescale * 1000;\n frame.duration = sampleDelta;\n break;\n }\n }\n\n frames.push(frame);\n chunkOffset += frameEnd;\n }\n }\n\n return frames;\n};\nexport var addSampleDescription = function addSampleDescription(track, bytes) {\n var codec = bytesToString(bytes.subarray(0, 4));\n\n if (track.type === 'video') {\n track.info = track.info || {};\n track.info.width = bytes[28] << 8 | bytes[29];\n track.info.height = bytes[30] << 8 | bytes[31];\n } else if (track.type === 'audio') {\n track.info = track.info || {};\n track.info.channels = bytes[20] << 8 | bytes[21];\n track.info.bitDepth = bytes[22] << 8 | bytes[23];\n track.info.sampleRate = bytes[28] << 8 | bytes[29];\n }\n\n if (codec === 'avc1') {\n var avcC = findNamedBox(bytes, 'avcC'); // AVCDecoderConfigurationRecord\n\n codec += \".\" + getAvcCodec(avcC);\n track.info.avcC = avcC; // TODO: do we need to parse all this?\n\n /* {\n configurationVersion: avcC[0],\n profile: avcC[1],\n profileCompatibility: avcC[2],\n level: avcC[3],\n lengthSizeMinusOne: avcC[4] & 0x3\n };\n let spsNalUnitCount = avcC[5] & 0x1F;\n const spsNalUnits = track.info.avc.spsNalUnits = [];\n // past spsNalUnitCount\n let offset = 6;\n while (spsNalUnitCount--) {\n const nalLen = avcC[offset] << 8 | avcC[offset + 1];\n spsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen));\n offset += nalLen + 2;\n }\n let ppsNalUnitCount = avcC[offset];\n const ppsNalUnits = track.info.avc.ppsNalUnits = [];\n // past ppsNalUnitCount\n offset += 1;\n while (ppsNalUnitCount--) {\n const nalLen = avcC[offset] << 8 | avcC[offset + 1];\n ppsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen));\n offset += nalLen + 2;\n }*/\n // HEVCDecoderConfigurationRecord\n } else if (codec === 'hvc1' || codec === 'hev1') {\n codec += \".\" + getHvcCodec(findNamedBox(bytes, 'hvcC'));\n } else if (codec === 'mp4a' || codec === 'mp4v') {\n var esds = findNamedBox(bytes, 'esds');\n var esDescriptor = parseDescriptors(esds.subarray(4))[0];\n var decoderConfig = esDescriptor && esDescriptor.descriptors.filter(function (_ref) {\n var tag = _ref.tag;\n return tag === 0x04;\n })[0];\n\n if (decoderConfig) {\n // most codecs do not have a further '.'\n // such as 0xa5 for ac-3 and 0xa6 for e-ac-3\n codec += '.' + toHexString(decoderConfig.oti);\n\n if (decoderConfig.oti === 0x40) {\n codec += '.' + (decoderConfig.descriptors[0].bytes[0] >> 3).toString();\n } else if (decoderConfig.oti === 0x20) {\n codec += '.' + decoderConfig.descriptors[0].bytes[4].toString();\n } else if (decoderConfig.oti === 0xdd) {\n codec = 'vorbis';\n }\n } else if (track.type === 'audio') {\n codec += '.40.2';\n } else {\n codec += '.20.9';\n }\n } else if (codec === 'av01') {\n // AV1DecoderConfigurationRecord\n codec += \".\" + getAv1Codec(findNamedBox(bytes, 'av1C'));\n } else if (codec === 'vp09') {\n // VPCodecConfigurationRecord\n var vpcC = findNamedBox(bytes, 'vpcC'); // https://www.webmproject.org/vp9/mp4/\n\n var profile = vpcC[0];\n var level = vpcC[1];\n var bitDepth = vpcC[2] >> 4;\n var chromaSubsampling = (vpcC[2] & 0x0F) >> 1;\n var videoFullRangeFlag = (vpcC[2] & 0x0F) >> 3;\n var colourPrimaries = vpcC[3];\n var transferCharacteristics = vpcC[4];\n var matrixCoefficients = vpcC[5];\n codec += \".\" + padStart(profile, 2, '0');\n codec += \".\" + padStart(level, 2, '0');\n codec += \".\" + padStart(bitDepth, 2, '0');\n codec += \".\" + padStart(chromaSubsampling, 2, '0');\n codec += \".\" + padStart(colourPrimaries, 2, '0');\n codec += \".\" + padStart(transferCharacteristics, 2, '0');\n codec += \".\" + padStart(matrixCoefficients, 2, '0');\n codec += \".\" + padStart(videoFullRangeFlag, 2, '0');\n } else if (codec === 'theo') {\n codec = 'theora';\n } else if (codec === 'spex') {\n codec = 'speex';\n } else if (codec === '.mp3') {\n codec = 'mp4a.40.34';\n } else if (codec === 'msVo') {\n codec = 'vorbis';\n } else if (codec === 'Opus') {\n codec = 'opus';\n var dOps = findNamedBox(bytes, 'dOps');\n track.info.opus = parseOpusHead(dOps); // TODO: should this go into the webm code??\n // Firefox requires a codecDelay for opus playback\n // see https://bugzilla.mozilla.org/show_bug.cgi?id=1276238\n\n track.info.codecDelay = 6500000;\n } else {\n codec = codec.toLowerCase();\n }\n /* eslint-enable */\n // flac, ac-3, ec-3, opus\n\n\n track.codec = codec;\n};\nexport var parseTracks = function parseTracks(bytes, frameTable) {\n if (frameTable === void 0) {\n frameTable = true;\n }\n\n bytes = toUint8(bytes);\n var traks = findBox(bytes, ['moov', 'trak'], true);\n var tracks = [];\n traks.forEach(function (trak) {\n var track = {\n bytes: trak\n };\n var mdia = findBox(trak, ['mdia'])[0];\n var hdlr = findBox(mdia, ['hdlr'])[0];\n var trakType = bytesToString(hdlr.subarray(8, 12));\n\n if (trakType === 'soun') {\n track.type = 'audio';\n } else if (trakType === 'vide') {\n track.type = 'video';\n } else {\n track.type = trakType;\n }\n\n var tkhd = findBox(trak, ['tkhd'])[0];\n\n if (tkhd) {\n var view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n var tkhdVersion = view.getUint8(0);\n track.number = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);\n }\n\n var mdhd = findBox(mdia, ['mdhd'])[0];\n\n if (mdhd) {\n // mdhd is a FullBox, meaning it will have its own version as the first byte\n var version = mdhd[0];\n var index = version === 0 ? 12 : 20;\n track.timescale = (mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]) >>> 0;\n }\n\n var stbl = findBox(mdia, ['minf', 'stbl'])[0];\n var stsd = findBox(stbl, ['stsd'])[0];\n var descriptionCount = bytesToNumber(stsd.subarray(4, 8));\n var offset = 8; // add codec and codec info\n\n while (descriptionCount--) {\n var len = bytesToNumber(stsd.subarray(offset, offset + 4));\n var sampleDescriptor = stsd.subarray(offset + 4, offset + 4 + len);\n addSampleDescription(track, sampleDescriptor);\n offset += 4 + len;\n }\n\n if (frameTable) {\n track.frameTable = buildFrameTable(stbl, track.timescale);\n } // codec has no sub parameters\n\n\n tracks.push(track);\n });\n return tracks;\n};\nexport var parseMediaInfo = function parseMediaInfo(bytes) {\n var mvhd = findBox(bytes, ['moov', 'mvhd'], true)[0];\n\n if (!mvhd || !mvhd.length) {\n return;\n }\n\n var info = {}; // ms to ns\n // mvhd v1 has 8 byte duration and other fields too\n\n if (mvhd[0] === 1) {\n info.timestampScale = bytesToNumber(mvhd.subarray(20, 24));\n info.duration = bytesToNumber(mvhd.subarray(24, 32));\n } else {\n info.timestampScale = bytesToNumber(mvhd.subarray(12, 16));\n info.duration = bytesToNumber(mvhd.subarray(16, 20));\n }\n\n info.bytes = mvhd;\n return info;\n};","import window from 'global/window';\nvar regexs = {\n // to determine mime types\n mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,\n webm: /^(vp0?[89]|av0?1|opus|vorbis)/,\n ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/,\n // to determine if a codec is audio or video\n video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,\n audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,\n text: /^(stpp.ttml.im1t)/,\n // mux.js support regex\n muxerVideo: /^(avc0?1)/,\n muxerAudio: /^(mp4a)/,\n // match nothing as muxer does not support text right now.\n // there cannot never be a character before the start of a string\n // so this matches nothing.\n muxerText: /a^/\n};\nvar mediaTypes = ['video', 'audio', 'text'];\nvar upperMediaTypes = ['Video', 'Audio', 'Text'];\n/**\n * Replace the old apple-style `avc1..` codec string with the standard\n * `avc1.`\n *\n * @param {string} codec\n * Codec string to translate\n * @return {string}\n * The translated codec string\n */\n\nexport var translateLegacyCodec = function translateLegacyCodec(codec) {\n if (!codec) {\n return codec;\n }\n\n return codec.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (orig, profile, avcLevel) {\n var profileHex = ('00' + Number(profile).toString(16)).slice(-2);\n var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);\n return 'avc1.' + profileHex + '00' + avcLevelHex;\n });\n};\n/**\n * Replace the old apple-style `avc1..` codec strings with the standard\n * `avc1.`\n *\n * @param {string[]} codecs\n * An array of codec strings to translate\n * @return {string[]}\n * The translated array of codec strings\n */\n\nexport var translateLegacyCodecs = function translateLegacyCodecs(codecs) {\n return codecs.map(translateLegacyCodec);\n};\n/**\n * Replace codecs in the codec string with the old apple-style `avc1..` to the\n * standard `avc1.`.\n *\n * @param {string} codecString\n * The codec string\n * @return {string}\n * The codec string with old apple-style codecs replaced\n *\n * @private\n */\n\nexport var mapLegacyAvcCodecs = function mapLegacyAvcCodecs(codecString) {\n return codecString.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (match) {\n return translateLegacyCodecs([match])[0];\n });\n};\n/**\n * @typedef {Object} ParsedCodecInfo\n * @property {number} codecCount\n * Number of codecs parsed\n * @property {string} [videoCodec]\n * Parsed video codec (if found)\n * @property {string} [videoObjectTypeIndicator]\n * Video object type indicator (if found)\n * @property {string|null} audioProfile\n * Audio profile\n */\n\n/**\n * Parses a codec string to retrieve the number of codecs specified, the video codec and\n * object type indicator, and the audio profile.\n *\n * @param {string} [codecString]\n * The codec string to parse\n * @return {ParsedCodecInfo}\n * Parsed codec info\n */\n\nexport var parseCodecs = function parseCodecs(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n var codecs = codecString.split(',');\n var result = [];\n codecs.forEach(function (codec) {\n codec = codec.trim();\n var codecType;\n mediaTypes.forEach(function (name) {\n var match = regexs[name].exec(codec.toLowerCase());\n\n if (!match || match.length <= 1) {\n return;\n }\n\n codecType = name; // maintain codec case\n\n var type = codec.substring(0, match[1].length);\n var details = codec.replace(type, '');\n result.push({\n type: type,\n details: details,\n mediaType: name\n });\n });\n\n if (!codecType) {\n result.push({\n type: codec,\n details: '',\n mediaType: 'unknown'\n });\n }\n });\n return result;\n};\n/**\n * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is\n * a default alternate audio playlist for the provided audio group.\n *\n * @param {Object} master\n * The master playlist\n * @param {string} audioGroupId\n * ID of the audio group for which to find the default codec info\n * @return {ParsedCodecInfo}\n * Parsed codec info\n */\n\nexport var codecsFromDefault = function codecsFromDefault(master, audioGroupId) {\n if (!master.mediaGroups.AUDIO || !audioGroupId) {\n return null;\n }\n\n var audioGroup = master.mediaGroups.AUDIO[audioGroupId];\n\n if (!audioGroup) {\n return null;\n }\n\n for (var name in audioGroup) {\n var audioType = audioGroup[name];\n\n if (audioType.default && audioType.playlists) {\n // codec should be the same for all playlists within the audio type\n return parseCodecs(audioType.playlists[0].attributes.CODECS);\n }\n }\n\n return null;\n};\nexport var isVideoCodec = function isVideoCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.video.test(codec.trim().toLowerCase());\n};\nexport var isAudioCodec = function isAudioCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.audio.test(codec.trim().toLowerCase());\n};\nexport var isTextCodec = function isTextCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.text.test(codec.trim().toLowerCase());\n};\nexport var getMimeForCodec = function getMimeForCodec(codecString) {\n if (!codecString || typeof codecString !== 'string') {\n return;\n }\n\n var codecs = codecString.toLowerCase().split(',').map(function (c) {\n return translateLegacyCodec(c.trim());\n }); // default to video type\n\n var type = 'video'; // only change to audio type if the only codec we have is\n // audio\n\n if (codecs.length === 1 && isAudioCodec(codecs[0])) {\n type = 'audio';\n } else if (codecs.length === 1 && isTextCodec(codecs[0])) {\n // text uses application/ for now\n type = 'application';\n } // default the container to mp4\n\n\n var container = 'mp4'; // every codec must be able to go into the container\n // for that container to be the correct one\n\n if (codecs.every(function (c) {\n return regexs.mp4.test(c);\n })) {\n container = 'mp4';\n } else if (codecs.every(function (c) {\n return regexs.webm.test(c);\n })) {\n container = 'webm';\n } else if (codecs.every(function (c) {\n return regexs.ogg.test(c);\n })) {\n container = 'ogg';\n }\n\n return type + \"/\" + container + \";codecs=\\\"\" + codecString + \"\\\"\";\n};\nexport var browserSupportsCodec = function browserSupportsCodec(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n return window.MediaSource && window.MediaSource.isTypeSupported && window.MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false;\n};\nexport var muxerSupportsCodec = function muxerSupportsCodec(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n return codecString.toLowerCase().split(',').every(function (codec) {\n codec = codec.trim(); // any match is supported.\n\n for (var i = 0; i < upperMediaTypes.length; i++) {\n var type = upperMediaTypes[i];\n\n if (regexs[\"muxer\" + type].test(codec)) {\n return true;\n }\n }\n\n return false;\n });\n};\nexport var DEFAULT_AUDIO_CODEC = 'mp4a.40.2';\nexport var DEFAULT_VIDEO_CODEC = 'avc1.4d400d';","var MPEGURL_REGEX = /^(audio|video|application)\\/(x-|vnd\\.apple\\.)?mpegurl/i;\nvar DASH_REGEX = /^application\\/dash\\+xml/i;\n/**\n * Returns a string that describes the type of source based on a video source object's\n * media type.\n *\n * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type}\n *\n * @param {string} type\n * Video source object media type\n * @return {('hls'|'dash'|'vhs-json'|null)}\n * VHS source type string\n */\n\nexport var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {\n if (MPEGURL_REGEX.test(type)) {\n return 'hls';\n }\n\n if (DASH_REGEX.test(type)) {\n return 'dash';\n } // Denotes the special case of a manifest object passed to http-streaming instead of a\n // source URL.\n //\n // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types.\n //\n // In this case, vnd stands for vendor, video.js for the organization, VHS for this\n // project, and the +json suffix identifies the structure of the media type.\n\n\n if (type === 'application/vnd.videojs.vhs+json') {\n return 'vhs-json';\n }\n\n return null;\n};","import window from 'global/window'; // const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2));\n\nvar repeat = function repeat(str, len) {\n var acc = '';\n\n while (len--) {\n acc += str;\n }\n\n return acc;\n}; // count the number of bits it would take to represent a number\n// we used to do this with log2 but BigInt does not support builtin math\n// Math.ceil(log2(x));\n\n\nexport var countBits = function countBits(x) {\n return x.toString(2).length;\n}; // count the number of whole bytes it would take to represent a number\n\nexport var countBytes = function countBytes(x) {\n return Math.ceil(countBits(x) / 8);\n};\nexport var padStart = function padStart(b, len, str) {\n if (str === void 0) {\n str = ' ';\n }\n\n return (repeat(str, len) + b.toString()).slice(-len);\n};\nexport var isArrayBufferView = function isArrayBufferView(obj) {\n if (ArrayBuffer.isView === 'function') {\n return ArrayBuffer.isView(obj);\n }\n\n return obj && obj.buffer instanceof ArrayBuffer;\n};\nexport var isTypedArray = function isTypedArray(obj) {\n return isArrayBufferView(obj);\n};\nexport var toUint8 = function toUint8(bytes) {\n if (bytes instanceof Uint8Array) {\n return bytes;\n }\n\n if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) {\n // any non-number or NaN leads to empty uint8array\n // eslint-disable-next-line\n if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) {\n bytes = 0;\n } else {\n bytes = [bytes];\n }\n }\n\n return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0);\n};\nexport var toHexString = function toHexString(bytes) {\n bytes = toUint8(bytes);\n var str = '';\n\n for (var i = 0; i < bytes.length; i++) {\n str += padStart(bytes[i].toString(16), 2, '0');\n }\n\n return str;\n};\nexport var toBinaryString = function toBinaryString(bytes) {\n bytes = toUint8(bytes);\n var str = '';\n\n for (var i = 0; i < bytes.length; i++) {\n str += padStart(bytes[i].toString(2), 8, '0');\n }\n\n return str;\n};\nvar BigInt = window.BigInt || Number;\nvar BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\nexport var ENDIANNESS = function () {\n var a = new Uint16Array([0xFFCC]);\n var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n\n if (b[0] === 0xFF) {\n return 'big';\n }\n\n if (b[0] === 0xCC) {\n return 'little';\n }\n\n return 'unknown';\n}();\nexport var IS_BIG_ENDIAN = ENDIANNESS === 'big';\nexport var IS_LITTLE_ENDIAN = ENDIANNESS === 'little';\nexport var bytesToNumber = function bytesToNumber(bytes, _temp) {\n var _ref = _temp === void 0 ? {} : _temp,\n _ref$signed = _ref.signed,\n signed = _ref$signed === void 0 ? false : _ref$signed,\n _ref$le = _ref.le,\n le = _ref$le === void 0 ? false : _ref$le;\n\n bytes = toUint8(bytes);\n var fn = le ? 'reduce' : 'reduceRight';\n var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn];\n var number = obj.call(bytes, function (total, byte, i) {\n var exponent = le ? i : Math.abs(i + 1 - bytes.length);\n return total + BigInt(byte) * BYTE_TABLE[exponent];\n }, BigInt(0));\n\n if (signed) {\n var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1);\n number = BigInt(number);\n\n if (number > max) {\n number -= max;\n number -= max;\n number -= BigInt(2);\n }\n }\n\n return Number(number);\n};\nexport var numberToBytes = function numberToBytes(number, _temp2) {\n var _ref2 = _temp2 === void 0 ? {} : _temp2,\n _ref2$le = _ref2.le,\n le = _ref2$le === void 0 ? false : _ref2$le;\n\n // eslint-disable-next-line\n if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) {\n number = 0;\n }\n\n number = BigInt(number);\n var byteCount = countBytes(number);\n var bytes = new Uint8Array(new ArrayBuffer(byteCount));\n\n for (var i = 0; i < byteCount; i++) {\n var byteIndex = le ? i : Math.abs(i + 1 - bytes.length);\n bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF));\n\n if (number < 0) {\n bytes[byteIndex] = Math.abs(~bytes[byteIndex]);\n bytes[byteIndex] -= i === 0 ? 1 : 2;\n }\n }\n\n return bytes;\n};\nexport var bytesToString = function bytesToString(bytes) {\n if (!bytes) {\n return '';\n } // TODO: should toUint8 handle cases where we only have 8 bytes\n // but report more since this is a Uint16+ Array?\n\n\n bytes = Array.prototype.slice.call(bytes);\n var string = String.fromCharCode.apply(null, toUint8(bytes));\n\n try {\n return decodeURIComponent(escape(string));\n } catch (e) {// if decodeURIComponent/escape fails, we are dealing with partial\n // or full non string data. Just return the potentially garbled string.\n }\n\n return string;\n};\nexport var stringToBytes = function stringToBytes(string, stringIsBytes) {\n if (typeof string !== 'string' && string && typeof string.toString === 'function') {\n string = string.toString();\n }\n\n if (typeof string !== 'string') {\n return new Uint8Array();\n } // If the string already is bytes, we don't have to do this\n // otherwise we do this so that we split multi length characters\n // into individual bytes\n\n\n if (!stringIsBytes) {\n string = unescape(encodeURIComponent(string));\n }\n\n var view = new Uint8Array(string.length);\n\n for (var i = 0; i < string.length; i++) {\n view[i] = string.charCodeAt(i);\n }\n\n return view;\n};\nexport var concatTypedArrays = function concatTypedArrays() {\n for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) {\n buffers[_key] = arguments[_key];\n }\n\n buffers = buffers.filter(function (b) {\n return b && (b.byteLength || b.length) && typeof b !== 'string';\n });\n\n if (buffers.length <= 1) {\n // for 0 length we will return empty uint8\n // for 1 length we return the first uint8\n return toUint8(buffers[0]);\n }\n\n var totalLen = buffers.reduce(function (total, buf, i) {\n return total + (buf.byteLength || buf.length);\n }, 0);\n var tempBuffer = new Uint8Array(totalLen);\n var offset = 0;\n buffers.forEach(function (buf) {\n buf = toUint8(buf);\n tempBuffer.set(buf, offset);\n offset += buf.byteLength;\n });\n return tempBuffer;\n};\n/**\n * Check if the bytes \"b\" are contained within bytes \"a\".\n *\n * @param {Uint8Array|Array} a\n * Bytes to check in\n *\n * @param {Uint8Array|Array} b\n * Bytes to check for\n *\n * @param {Object} options\n * options\n *\n * @param {Array|Uint8Array} [offset=0]\n * offset to use when looking at bytes in a\n *\n * @param {Array|Uint8Array} [mask=[]]\n * mask to use on bytes before comparison.\n *\n * @return {boolean}\n * If all bytes in b are inside of a, taking into account\n * bit masks.\n */\n\nexport var bytesMatch = function bytesMatch(a, b, _temp3) {\n var _ref3 = _temp3 === void 0 ? {} : _temp3,\n _ref3$offset = _ref3.offset,\n offset = _ref3$offset === void 0 ? 0 : _ref3$offset,\n _ref3$mask = _ref3.mask,\n mask = _ref3$mask === void 0 ? [] : _ref3$mask;\n\n a = toUint8(a);\n b = toUint8(b); // ie 11 does not support uint8 every\n\n var fn = b.every ? b.every : Array.prototype.every;\n return b.length && a.length - offset >= b.length && // ie 11 doesn't support every on uin8\n fn.call(b, function (bByte, i) {\n var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i];\n return bByte === aByte;\n });\n};\nexport var sliceBytes = function sliceBytes(src, start, end) {\n if (Uint8Array.prototype.slice) {\n return Uint8Array.prototype.slice.call(src, start, end);\n }\n\n return new Uint8Array(Array.prototype.slice.call(src, start, end));\n};\nexport var reverseBytes = function reverseBytes(src) {\n if (src.reverse) {\n return src.reverse();\n }\n\n return Array.prototype.reverse.call(src);\n};","/*! @name mpd-parser @version 0.22.1 @license Apache-2.0 */\nimport resolveUrl from '@videojs/vhs-utils/es/resolve-url';\nimport window from 'global/window';\nimport { forEachMediaGroup } from '@videojs/vhs-utils/es/media-groups';\nimport decodeB64ToUint8Array from '@videojs/vhs-utils/es/decode-b64-to-uint8-array';\nimport { DOMParser } from '@xmldom/xmldom';\n\nvar version = \"0.22.1\";\n\nvar isObject = function isObject(obj) {\n return !!obj && typeof obj === 'object';\n};\n\nvar merge = function merge() {\n for (var _len = arguments.length, objects = new Array(_len), _key = 0; _key < _len; _key++) {\n objects[_key] = arguments[_key];\n }\n\n return objects.reduce(function (result, source) {\n if (typeof source !== 'object') {\n return result;\n }\n\n Object.keys(source).forEach(function (key) {\n if (Array.isArray(result[key]) && Array.isArray(source[key])) {\n result[key] = result[key].concat(source[key]);\n } else if (isObject(result[key]) && isObject(source[key])) {\n result[key] = merge(result[key], source[key]);\n } else {\n result[key] = source[key];\n }\n });\n return result;\n }, {});\n};\nvar values = function values(o) {\n return Object.keys(o).map(function (k) {\n return o[k];\n });\n};\n\nvar range = function range(start, end) {\n var result = [];\n\n for (var i = start; i < end; i++) {\n result.push(i);\n }\n\n return result;\n};\nvar flatten = function flatten(lists) {\n return lists.reduce(function (x, y) {\n return x.concat(y);\n }, []);\n};\nvar from = function from(list) {\n if (!list.length) {\n return [];\n }\n\n var result = [];\n\n for (var i = 0; i < list.length; i++) {\n result.push(list[i]);\n }\n\n return result;\n};\nvar findIndexes = function findIndexes(l, key) {\n return l.reduce(function (a, e, i) {\n if (e[key]) {\n a.push(i);\n }\n\n return a;\n }, []);\n};\n/**\n * Returns the first index that satisfies the matching function, or -1 if not found.\n *\n * Only necessary because of IE11 support.\n *\n * @param {Array} list - the list to search through\n * @param {Function} matchingFunction - the matching function\n *\n * @return {number} the matching index or -1 if not found\n */\n\nvar findIndex = function findIndex(list, matchingFunction) {\n for (var i = 0; i < list.length; i++) {\n if (matchingFunction(list[i])) {\n return i;\n }\n }\n\n return -1;\n};\n/**\n * Returns a union of the included lists provided each element can be identified by a key.\n *\n * @param {Array} list - list of lists to get the union of\n * @param {Function} keyFunction - the function to use as a key for each element\n *\n * @return {Array} the union of the arrays\n */\n\nvar union = function union(lists, keyFunction) {\n return values(lists.reduce(function (acc, list) {\n list.forEach(function (el) {\n acc[keyFunction(el)] = el;\n });\n return acc;\n }, {}));\n};\n\nvar errors = {\n INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',\n DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',\n DASH_INVALID_XML: 'DASH_INVALID_XML',\n NO_BASE_URL: 'NO_BASE_URL',\n MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',\n SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',\n UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'\n};\n\n/**\n * @typedef {Object} SingleUri\n * @property {string} uri - relative location of segment\n * @property {string} resolvedUri - resolved location of segment\n * @property {Object} byterange - Object containing information on how to make byte range\n * requests following byte-range-spec per RFC2616.\n * @property {String} byterange.length - length of range request\n * @property {String} byterange.offset - byte offset of range request\n *\n * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1\n */\n\n/**\n * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object\n * that conforms to how m3u8-parser is structured\n *\n * @see https://github.com/videojs/m3u8-parser\n *\n * @param {string} baseUrl - baseUrl provided by nodes\n * @param {string} source - source url for segment\n * @param {string} range - optional range used for range calls,\n * follows RFC 2616, Clause 14.35.1\n * @return {SingleUri} full segment information transformed into a format similar\n * to m3u8-parser\n */\n\nvar urlTypeToSegment = function urlTypeToSegment(_ref) {\n var _ref$baseUrl = _ref.baseUrl,\n baseUrl = _ref$baseUrl === void 0 ? '' : _ref$baseUrl,\n _ref$source = _ref.source,\n source = _ref$source === void 0 ? '' : _ref$source,\n _ref$range = _ref.range,\n range = _ref$range === void 0 ? '' : _ref$range,\n _ref$indexRange = _ref.indexRange,\n indexRange = _ref$indexRange === void 0 ? '' : _ref$indexRange;\n var segment = {\n uri: source,\n resolvedUri: resolveUrl(baseUrl || '', source)\n };\n\n if (range || indexRange) {\n var rangeStr = range ? range : indexRange;\n var ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible\n\n var startRange = window.BigInt ? window.BigInt(ranges[0]) : parseInt(ranges[0], 10);\n var endRange = window.BigInt ? window.BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER\n\n if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') {\n startRange = Number(startRange);\n }\n\n if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') {\n endRange = Number(endRange);\n }\n\n var length;\n\n if (typeof endRange === 'bigint' || typeof startRange === 'bigint') {\n length = window.BigInt(endRange) - window.BigInt(startRange) + window.BigInt(1);\n } else {\n length = endRange - startRange + 1;\n }\n\n if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) {\n length = Number(length);\n } // byterange should be inclusive according to\n // RFC 2616, Clause 14.35.1\n\n\n segment.byterange = {\n length: length,\n offset: startRange\n };\n }\n\n return segment;\n};\nvar byteRangeToString = function byteRangeToString(byterange) {\n // `endRange` is one less than `offset + length` because the HTTP range\n // header uses inclusive ranges\n var endRange;\n\n if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {\n endRange = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);\n } else {\n endRange = byterange.offset + byterange.length - 1;\n }\n\n return byterange.offset + \"-\" + endRange;\n};\n\n/**\n * parse the end number attribue that can be a string\n * number, or undefined.\n *\n * @param {string|number|undefined} endNumber\n * The end number attribute.\n *\n * @return {number|null}\n * The result of parsing the end number.\n */\n\nvar parseEndNumber = function parseEndNumber(endNumber) {\n if (endNumber && typeof endNumber !== 'number') {\n endNumber = parseInt(endNumber, 10);\n }\n\n if (isNaN(endNumber)) {\n return null;\n }\n\n return endNumber;\n};\n/**\n * Functions for calculating the range of available segments in static and dynamic\n * manifests.\n */\n\n\nvar segmentRange = {\n /**\n * Returns the entire range of available segments for a static MPD\n *\n * @param {Object} attributes\n * Inheritied MPD attributes\n * @return {{ start: number, end: number }}\n * The start and end numbers for available segments\n */\n static: function _static(attributes) {\n var duration = attributes.duration,\n _attributes$timescale = attributes.timescale,\n timescale = _attributes$timescale === void 0 ? 1 : _attributes$timescale,\n sourceDuration = attributes.sourceDuration,\n periodDuration = attributes.periodDuration;\n var endNumber = parseEndNumber(attributes.endNumber);\n var segmentDuration = duration / timescale;\n\n if (typeof endNumber === 'number') {\n return {\n start: 0,\n end: endNumber\n };\n }\n\n if (typeof periodDuration === 'number') {\n return {\n start: 0,\n end: periodDuration / segmentDuration\n };\n }\n\n return {\n start: 0,\n end: sourceDuration / segmentDuration\n };\n },\n\n /**\n * Returns the current live window range of available segments for a dynamic MPD\n *\n * @param {Object} attributes\n * Inheritied MPD attributes\n * @return {{ start: number, end: number }}\n * The start and end numbers for available segments\n */\n dynamic: function dynamic(attributes) {\n var NOW = attributes.NOW,\n clientOffset = attributes.clientOffset,\n availabilityStartTime = attributes.availabilityStartTime,\n _attributes$timescale2 = attributes.timescale,\n timescale = _attributes$timescale2 === void 0 ? 1 : _attributes$timescale2,\n duration = attributes.duration,\n _attributes$periodSta = attributes.periodStart,\n periodStart = _attributes$periodSta === void 0 ? 0 : _attributes$periodSta,\n _attributes$minimumUp = attributes.minimumUpdatePeriod,\n minimumUpdatePeriod = _attributes$minimumUp === void 0 ? 0 : _attributes$minimumUp,\n _attributes$timeShift = attributes.timeShiftBufferDepth,\n timeShiftBufferDepth = _attributes$timeShift === void 0 ? Infinity : _attributes$timeShift;\n var endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated\n // after retrieving UTC server time.\n\n var now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock.\n // Convert the period start time to EPOCH.\n\n var periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update.\n\n var periodEndWC = now + minimumUpdatePeriod;\n var periodDuration = periodEndWC - periodStartWC;\n var segmentCount = Math.ceil(periodDuration * timescale / duration);\n var availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);\n var availableEnd = Math.floor((now - periodStartWC) * timescale / duration);\n return {\n start: Math.max(0, availableStart),\n end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd)\n };\n }\n};\n/**\n * Maps a range of numbers to objects with information needed to build the corresponding\n * segment list\n *\n * @name toSegmentsCallback\n * @function\n * @param {number} number\n * Number of the segment\n * @param {number} index\n * Index of the number in the range list\n * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}\n * Object with segment timing and duration info\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping a range of numbers to\n * information needed to build the segment list.\n *\n * @param {Object} attributes\n * Inherited MPD attributes\n * @return {toSegmentsCallback}\n * Callback map function\n */\n\nvar toSegments = function toSegments(attributes) {\n return function (number) {\n var duration = attributes.duration,\n _attributes$timescale3 = attributes.timescale,\n timescale = _attributes$timescale3 === void 0 ? 1 : _attributes$timescale3,\n periodStart = attributes.periodStart,\n _attributes$startNumb = attributes.startNumber,\n startNumber = _attributes$startNumb === void 0 ? 1 : _attributes$startNumb;\n return {\n number: startNumber + number,\n duration: duration / timescale,\n timeline: periodStart,\n time: number * duration\n };\n };\n};\n/**\n * Returns a list of objects containing segment timing and duration info used for\n * building the list of segments. This uses the @duration attribute specified\n * in the MPD manifest to derive the range of segments.\n *\n * @param {Object} attributes\n * Inherited MPD attributes\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\nvar parseByDuration = function parseByDuration(attributes) {\n var type = attributes.type,\n duration = attributes.duration,\n _attributes$timescale4 = attributes.timescale,\n timescale = _attributes$timescale4 === void 0 ? 1 : _attributes$timescale4,\n periodDuration = attributes.periodDuration,\n sourceDuration = attributes.sourceDuration;\n\n var _segmentRange$type = segmentRange[type](attributes),\n start = _segmentRange$type.start,\n end = _segmentRange$type.end;\n\n var segments = range(start, end).map(toSegments(attributes));\n\n if (type === 'static') {\n var index = segments.length - 1; // section is either a period or the full source\n\n var sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration\n\n segments[index].duration = sectionDuration - duration / timescale * index;\n }\n\n return segments;\n};\n\n/**\n * Translates SegmentBase into a set of segments.\n * (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each\n * node should be translated into segment.\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @return {Object.} list of segments\n */\n\nvar segmentsFromBase = function segmentsFromBase(attributes) {\n var baseUrl = attributes.baseUrl,\n _attributes$initializ = attributes.initialization,\n initialization = _attributes$initializ === void 0 ? {} : _attributes$initializ,\n sourceDuration = attributes.sourceDuration,\n _attributes$indexRang = attributes.indexRange,\n indexRange = _attributes$indexRang === void 0 ? '' : _attributes$indexRang,\n periodStart = attributes.periodStart,\n presentationTime = attributes.presentationTime,\n _attributes$number = attributes.number,\n number = _attributes$number === void 0 ? 0 : _attributes$number,\n duration = attributes.duration; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)\n\n if (!baseUrl) {\n throw new Error(errors.NO_BASE_URL);\n }\n\n var initSegment = urlTypeToSegment({\n baseUrl: baseUrl,\n source: initialization.sourceURL,\n range: initialization.range\n });\n var segment = urlTypeToSegment({\n baseUrl: baseUrl,\n source: baseUrl,\n indexRange: indexRange\n });\n segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source\n // (since SegmentBase is only for one total segment)\n\n if (duration) {\n var segmentTimeInfo = parseByDuration(attributes);\n\n if (segmentTimeInfo.length) {\n segment.duration = segmentTimeInfo[0].duration;\n segment.timeline = segmentTimeInfo[0].timeline;\n }\n } else if (sourceDuration) {\n segment.duration = sourceDuration;\n segment.timeline = periodStart;\n } // If presentation time is provided, these segments are being generated by SIDX\n // references, and should use the time provided. For the general case of SegmentBase,\n // there should only be one segment in the period, so its presentation time is the same\n // as its period start.\n\n\n segment.presentationTime = presentationTime || periodStart;\n segment.number = number;\n return [segment];\n};\n/**\n * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist\n * according to the sidx information given.\n *\n * playlist.sidx has metadadata about the sidx where-as the sidx param\n * is the parsed sidx box itself.\n *\n * @param {Object} playlist the playlist to update the sidx information for\n * @param {Object} sidx the parsed sidx box\n * @return {Object} the playlist object with the updated sidx information\n */\n\nvar addSidxSegmentsToPlaylist$1 = function addSidxSegmentsToPlaylist(playlist, sidx, baseUrl) {\n // Retain init segment information\n var initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing\n\n var sourceDuration = playlist.sidx.duration; // Retain source timeline\n\n var timeline = playlist.timeline || 0;\n var sidxByteRange = playlist.sidx.byterange;\n var sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx\n\n var timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes\n\n var mediaReferences = sidx.references.filter(function (r) {\n return r.referenceType !== 1;\n });\n var segments = [];\n var type = playlist.endList ? 'static' : 'dynamic';\n var periodStart = playlist.sidx.timeline;\n var presentationTime = periodStart;\n var number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box\n\n var startIndex; // eslint-disable-next-line\n\n if (typeof sidx.firstOffset === 'bigint') {\n startIndex = window.BigInt(sidxEnd) + sidx.firstOffset;\n } else {\n startIndex = sidxEnd + sidx.firstOffset;\n }\n\n for (var i = 0; i < mediaReferences.length; i++) {\n var reference = sidx.references[i]; // size of the referenced (sub)segment\n\n var size = reference.referencedSize; // duration of the referenced (sub)segment, in the timescale\n // this will be converted to seconds when generating segments\n\n var duration = reference.subsegmentDuration; // should be an inclusive range\n\n var endIndex = void 0; // eslint-disable-next-line\n\n if (typeof startIndex === 'bigint') {\n endIndex = startIndex + window.BigInt(size) - window.BigInt(1);\n } else {\n endIndex = startIndex + size - 1;\n }\n\n var indexRange = startIndex + \"-\" + endIndex;\n var attributes = {\n baseUrl: baseUrl,\n timescale: timescale,\n timeline: timeline,\n periodStart: periodStart,\n presentationTime: presentationTime,\n number: number,\n duration: duration,\n sourceDuration: sourceDuration,\n indexRange: indexRange,\n type: type\n };\n var segment = segmentsFromBase(attributes)[0];\n\n if (initSegment) {\n segment.map = initSegment;\n }\n\n segments.push(segment);\n\n if (typeof startIndex === 'bigint') {\n startIndex += window.BigInt(size);\n } else {\n startIndex += size;\n }\n\n presentationTime += duration / timescale;\n number++;\n }\n\n playlist.segments = segments;\n return playlist;\n};\n\nvar SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen)\n\nvar TIME_FUDGE = 1 / 60;\n/**\n * Given a list of timelineStarts, combines, dedupes, and sorts them.\n *\n * @param {TimelineStart[]} timelineStarts - list of timeline starts\n *\n * @return {TimelineStart[]} the combined and deduped timeline starts\n */\n\nvar getUniqueTimelineStarts = function getUniqueTimelineStarts(timelineStarts) {\n return union(timelineStarts, function (_ref) {\n var timeline = _ref.timeline;\n return timeline;\n }).sort(function (a, b) {\n return a.timeline > b.timeline ? 1 : -1;\n });\n};\n/**\n * Finds the playlist with the matching NAME attribute.\n *\n * @param {Array} playlists - playlists to search through\n * @param {string} name - the NAME attribute to search for\n *\n * @return {Object|null} the matching playlist object, or null\n */\n\nvar findPlaylistWithName = function findPlaylistWithName(playlists, name) {\n for (var i = 0; i < playlists.length; i++) {\n if (playlists[i].attributes.NAME === name) {\n return playlists[i];\n }\n }\n\n return null;\n};\n/**\n * Gets a flattened array of media group playlists.\n *\n * @param {Object} manifest - the main manifest object\n *\n * @return {Array} the media group playlists\n */\n\nvar getMediaGroupPlaylists = function getMediaGroupPlaylists(manifest) {\n var mediaGroupPlaylists = [];\n forEachMediaGroup(manifest, SUPPORTED_MEDIA_TYPES, function (properties, type, group, label) {\n mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []);\n });\n return mediaGroupPlaylists;\n};\n/**\n * Updates the playlist's media sequence numbers.\n *\n * @param {Object} config - options object\n * @param {Object} config.playlist - the playlist to update\n * @param {number} config.mediaSequence - the mediaSequence number to start with\n */\n\nvar updateMediaSequenceForPlaylist = function updateMediaSequenceForPlaylist(_ref2) {\n var playlist = _ref2.playlist,\n mediaSequence = _ref2.mediaSequence;\n playlist.mediaSequence = mediaSequence;\n playlist.segments.forEach(function (segment, index) {\n segment.number = playlist.mediaSequence + index;\n });\n};\n/**\n * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists\n * and a complete list of timeline starts.\n *\n * If no matching playlist is found, only the discontinuity sequence number of the playlist\n * will be updated.\n *\n * Since early available timelines are not supported, at least one segment must be present.\n *\n * @param {Object} config - options object\n * @param {Object[]} oldPlaylists - the old playlists to use as a reference\n * @param {Object[]} newPlaylists - the new playlists to update\n * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point\n */\n\nvar updateSequenceNumbers = function updateSequenceNumbers(_ref3) {\n var oldPlaylists = _ref3.oldPlaylists,\n newPlaylists = _ref3.newPlaylists,\n timelineStarts = _ref3.timelineStarts;\n newPlaylists.forEach(function (playlist) {\n playlist.discontinuitySequence = findIndex(timelineStarts, function (_ref4) {\n var timeline = _ref4.timeline;\n return timeline === playlist.timeline;\n }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory\n // (see ISO_23009-1-2012 5.3.5.2).\n //\n // If the same Representation existed in a prior Period, it will retain the same NAME.\n\n var oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME);\n\n if (!oldPlaylist) {\n // Since this is a new playlist, the media sequence values can start from 0 without\n // consequence.\n return;\n } // TODO better support for live SIDX\n //\n // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD).\n // This is evident by a playlist only having a single SIDX reference. In a multiperiod\n // playlist there would need to be multiple SIDX references. In addition, live SIDX is\n // not supported when the SIDX properties change on refreshes.\n //\n // In the future, if support needs to be added, the merging logic here can be called\n // after SIDX references are resolved. For now, exit early to prevent exceptions being\n // thrown due to undefined references.\n\n\n if (playlist.sidx) {\n return;\n } // Since we don't yet support early available timelines, we don't need to support\n // playlists with no segments.\n\n\n var firstNewSegment = playlist.segments[0];\n var oldMatchingSegmentIndex = findIndex(oldPlaylist.segments, function (oldSegment) {\n return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE;\n }); // No matching segment from the old playlist means the entire playlist was refreshed.\n // In this case the media sequence should account for this update, and the new segments\n // should be marked as discontinuous from the prior content, since the last prior\n // timeline was removed.\n\n if (oldMatchingSegmentIndex === -1) {\n updateMediaSequenceForPlaylist({\n playlist: playlist,\n mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length\n });\n playlist.segments[0].discontinuity = true;\n playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content.\n //\n // If the new playlist's timeline is the same as the last seen segment's timeline,\n // then a discontinuity can be added to identify that there's potentially missing\n // content. If there's no missing content, the discontinuity should still be rather\n // harmless. It's possible that if segment durations are accurate enough, that the\n // existence of a gap can be determined using the presentation times and durations,\n // but if the segment timing info is off, it may introduce more problems than simply\n // adding the discontinuity.\n //\n // If the new playlist's timeline is different from the last seen segment's timeline,\n // then a discontinuity can be added to identify that this is the first seen segment\n // of a new timeline. However, the logic at the start of this function that\n // determined the disconinuity sequence by timeline index is now off by one (the\n // discontinuity of the newest timeline hasn't yet fallen off the manifest...since\n // we added it), so the disconinuity sequence must be decremented.\n //\n // A period may also have a duration of zero, so the case of no segments is handled\n // here even though we don't yet support early available periods.\n\n if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) {\n playlist.discontinuitySequence--;\n }\n\n return;\n } // If the first segment matched with a prior segment on a discontinuity (it's matching\n // on the first segment of a period), then the discontinuitySequence shouldn't be the\n // timeline's matching one, but instead should be the one prior, and the first segment\n // of the new manifest should be marked with a discontinuity.\n //\n // The reason for this special case is that discontinuity sequence shows how many\n // discontinuities have fallen off of the playlist, and discontinuities are marked on\n // the first segment of a new \"timeline.\" Because of this, while DASH will retain that\n // Period while the \"timeline\" exists, HLS keeps track of it via the discontinuity\n // sequence, and that first segment is an indicator, but can be removed before that\n // timeline is gone.\n\n\n var oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex];\n\n if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) {\n firstNewSegment.discontinuity = true;\n playlist.discontinuityStarts.unshift(0);\n playlist.discontinuitySequence--;\n }\n\n updateMediaSequenceForPlaylist({\n playlist: playlist,\n mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number\n });\n });\n};\n/**\n * Given an old parsed manifest object and a new parsed manifest object, updates the\n * sequence and timing values within the new manifest to ensure that it lines up with the\n * old.\n *\n * @param {Array} oldManifest - the old main manifest object\n * @param {Array} newManifest - the new main manifest object\n *\n * @return {Object} the updated new manifest object\n */\n\nvar positionManifestOnTimeline = function positionManifestOnTimeline(_ref5) {\n var oldManifest = _ref5.oldManifest,\n newManifest = _ref5.newManifest;\n // Starting from v4.1.2 of the IOP, section 4.4.3.3 states:\n //\n // \"MPD@availabilityStartTime and Period@start shall not be changed over MPD updates.\"\n //\n // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160\n //\n // Because of this change, and the difficulty of supporting periods with changing start\n // times, periods with changing start times are not supported. This makes the logic much\n // simpler, since periods with the same start time can be considerred the same period\n // across refreshes.\n //\n // To give an example as to the difficulty of handling periods where the start time may\n // change, if a single period manifest is refreshed with another manifest with a single\n // period, and both the start and end times are increased, then the only way to determine\n // if it's a new period or an old one that has changed is to look through the segments of\n // each playlist and determine the presentation time bounds to find a match. In addition,\n // if the period start changed to exceed the old period end, then there would be no\n // match, and it would not be possible to determine whether the refreshed period is a new\n // one or the old one.\n var oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest));\n var newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that\n // there's a \"memory leak\" in that it will never stop growing, in reality, only a couple\n // of properties are saved for each seen Period. Even long running live streams won't\n // generate too many Periods, unless the stream is watched for decades. In the future,\n // this can be optimized by mapping to discontinuity sequence numbers for each timeline,\n // but it may not become an issue, and the additional info can be useful for debugging.\n\n newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]);\n updateSequenceNumbers({\n oldPlaylists: oldPlaylists,\n newPlaylists: newPlaylists,\n timelineStarts: newManifest.timelineStarts\n });\n return newManifest;\n};\n\nvar generateSidxKey = function generateSidxKey(sidx) {\n return sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange);\n};\n\nvar mergeDiscontiguousPlaylists = function mergeDiscontiguousPlaylists(playlists) {\n var mergedPlaylists = values(playlists.reduce(function (acc, playlist) {\n // assuming playlist IDs are the same across periods\n // TODO: handle multiperiod where representation sets are not the same\n // across periods\n var name = playlist.attributes.id + (playlist.attributes.lang || '');\n\n if (!acc[name]) {\n // First Period\n acc[name] = playlist;\n acc[name].attributes.timelineStarts = [];\n } else {\n // Subsequent Periods\n if (playlist.segments) {\n var _acc$name$segments;\n\n // first segment of subsequent periods signal a discontinuity\n if (playlist.segments[0]) {\n playlist.segments[0].discontinuity = true;\n }\n\n (_acc$name$segments = acc[name].segments).push.apply(_acc$name$segments, playlist.segments);\n } // bubble up contentProtection, this assumes all DRM content\n // has the same contentProtection\n\n\n if (playlist.attributes.contentProtection) {\n acc[name].attributes.contentProtection = playlist.attributes.contentProtection;\n }\n }\n\n acc[name].attributes.timelineStarts.push({\n // Although they represent the same number, it's important to have both to make it\n // compatible with HLS potentially having a similar attribute.\n start: playlist.attributes.periodStart,\n timeline: playlist.attributes.periodStart\n });\n return acc;\n }, {}));\n return mergedPlaylists.map(function (playlist) {\n playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity');\n return playlist;\n });\n};\n\nvar addSidxSegmentsToPlaylist = function addSidxSegmentsToPlaylist(playlist, sidxMapping) {\n var sidxKey = generateSidxKey(playlist.sidx);\n var sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx;\n\n if (sidxMatch) {\n addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri);\n }\n\n return playlist;\n};\nvar addSidxSegmentsToPlaylists = function addSidxSegmentsToPlaylists(playlists, sidxMapping) {\n if (sidxMapping === void 0) {\n sidxMapping = {};\n }\n\n if (!Object.keys(sidxMapping).length) {\n return playlists;\n }\n\n for (var i in playlists) {\n playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping);\n }\n\n return playlists;\n};\nvar formatAudioPlaylist = function formatAudioPlaylist(_ref, isAudioOnly) {\n var _attributes;\n\n var attributes = _ref.attributes,\n segments = _ref.segments,\n sidx = _ref.sidx,\n mediaSequence = _ref.mediaSequence,\n discontinuitySequence = _ref.discontinuitySequence,\n discontinuityStarts = _ref.discontinuityStarts;\n var playlist = {\n attributes: (_attributes = {\n NAME: attributes.id,\n BANDWIDTH: attributes.bandwidth,\n CODECS: attributes.codecs\n }, _attributes['PROGRAM-ID'] = 1, _attributes),\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: '',\n targetDuration: attributes.duration,\n discontinuitySequence: discontinuitySequence,\n discontinuityStarts: discontinuityStarts,\n timelineStarts: attributes.timelineStarts,\n mediaSequence: mediaSequence,\n segments: segments\n };\n\n if (attributes.contentProtection) {\n playlist.contentProtection = attributes.contentProtection;\n }\n\n if (sidx) {\n playlist.sidx = sidx;\n }\n\n if (isAudioOnly) {\n playlist.attributes.AUDIO = 'audio';\n playlist.attributes.SUBTITLES = 'subs';\n }\n\n return playlist;\n};\nvar formatVttPlaylist = function formatVttPlaylist(_ref2) {\n var _m3u8Attributes;\n\n var attributes = _ref2.attributes,\n segments = _ref2.segments,\n mediaSequence = _ref2.mediaSequence,\n discontinuityStarts = _ref2.discontinuityStarts,\n discontinuitySequence = _ref2.discontinuitySequence;\n\n if (typeof segments === 'undefined') {\n // vtt tracks may use single file in BaseURL\n segments = [{\n uri: attributes.baseUrl,\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n duration: attributes.sourceDuration,\n number: 0\n }]; // targetDuration should be the same duration as the only segment\n\n attributes.duration = attributes.sourceDuration;\n }\n\n var m3u8Attributes = (_m3u8Attributes = {\n NAME: attributes.id,\n BANDWIDTH: attributes.bandwidth\n }, _m3u8Attributes['PROGRAM-ID'] = 1, _m3u8Attributes);\n\n if (attributes.codecs) {\n m3u8Attributes.CODECS = attributes.codecs;\n }\n\n return {\n attributes: m3u8Attributes,\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n targetDuration: attributes.duration,\n timelineStarts: attributes.timelineStarts,\n discontinuityStarts: discontinuityStarts,\n discontinuitySequence: discontinuitySequence,\n mediaSequence: mediaSequence,\n segments: segments\n };\n};\nvar organizeAudioPlaylists = function organizeAudioPlaylists(playlists, sidxMapping, isAudioOnly) {\n if (sidxMapping === void 0) {\n sidxMapping = {};\n }\n\n if (isAudioOnly === void 0) {\n isAudioOnly = false;\n }\n\n var mainPlaylist;\n var formattedPlaylists = playlists.reduce(function (a, playlist) {\n var role = playlist.attributes.role && playlist.attributes.role.value || '';\n var language = playlist.attributes.lang || '';\n var label = playlist.attributes.label || 'main';\n\n if (language && !playlist.attributes.label) {\n var roleLabel = role ? \" (\" + role + \")\" : '';\n label = \"\" + playlist.attributes.lang + roleLabel;\n }\n\n if (!a[label]) {\n a[label] = {\n language: language,\n autoselect: true,\n default: role === 'main',\n playlists: [],\n uri: ''\n };\n }\n\n var formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping);\n a[label].playlists.push(formatted);\n\n if (typeof mainPlaylist === 'undefined' && role === 'main') {\n mainPlaylist = playlist;\n mainPlaylist.default = true;\n }\n\n return a;\n }, {}); // if no playlists have role \"main\", mark the first as main\n\n if (!mainPlaylist) {\n var firstLabel = Object.keys(formattedPlaylists)[0];\n formattedPlaylists[firstLabel].default = true;\n }\n\n return formattedPlaylists;\n};\nvar organizeVttPlaylists = function organizeVttPlaylists(playlists, sidxMapping) {\n if (sidxMapping === void 0) {\n sidxMapping = {};\n }\n\n return playlists.reduce(function (a, playlist) {\n var label = playlist.attributes.lang || 'text';\n\n if (!a[label]) {\n a[label] = {\n language: label,\n default: false,\n autoselect: false,\n playlists: [],\n uri: ''\n };\n }\n\n a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping));\n return a;\n }, {});\n};\n\nvar organizeCaptionServices = function organizeCaptionServices(captionServices) {\n return captionServices.reduce(function (svcObj, svc) {\n if (!svc) {\n return svcObj;\n }\n\n svc.forEach(function (service) {\n var channel = service.channel,\n language = service.language;\n svcObj[language] = {\n autoselect: false,\n default: false,\n instreamId: channel,\n language: language\n };\n\n if (service.hasOwnProperty('aspectRatio')) {\n svcObj[language].aspectRatio = service.aspectRatio;\n }\n\n if (service.hasOwnProperty('easyReader')) {\n svcObj[language].easyReader = service.easyReader;\n }\n\n if (service.hasOwnProperty('3D')) {\n svcObj[language]['3D'] = service['3D'];\n }\n });\n return svcObj;\n }, {});\n};\n\nvar formatVideoPlaylist = function formatVideoPlaylist(_ref3) {\n var _attributes2;\n\n var attributes = _ref3.attributes,\n segments = _ref3.segments,\n sidx = _ref3.sidx,\n discontinuityStarts = _ref3.discontinuityStarts;\n var playlist = {\n attributes: (_attributes2 = {\n NAME: attributes.id,\n AUDIO: 'audio',\n SUBTITLES: 'subs',\n RESOLUTION: {\n width: attributes.width,\n height: attributes.height\n },\n CODECS: attributes.codecs,\n BANDWIDTH: attributes.bandwidth\n }, _attributes2['PROGRAM-ID'] = 1, _attributes2),\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: '',\n targetDuration: attributes.duration,\n discontinuityStarts: discontinuityStarts,\n timelineStarts: attributes.timelineStarts,\n segments: segments\n };\n\n if (attributes.frameRate) {\n playlist.attributes['FRAME-RATE'] = attributes.frameRate;\n }\n\n if (attributes.contentProtection) {\n playlist.contentProtection = attributes.contentProtection;\n }\n\n if (sidx) {\n playlist.sidx = sidx;\n }\n\n return playlist;\n};\n\nvar videoOnly = function videoOnly(_ref4) {\n var attributes = _ref4.attributes;\n return attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video';\n};\n\nvar audioOnly = function audioOnly(_ref5) {\n var attributes = _ref5.attributes;\n return attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio';\n};\n\nvar vttOnly = function vttOnly(_ref6) {\n var attributes = _ref6.attributes;\n return attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';\n};\n/**\n * Contains start and timeline properties denoting a timeline start. For DASH, these will\n * be the same number.\n *\n * @typedef {Object} TimelineStart\n * @property {number} start - the start time of the timeline\n * @property {number} timeline - the timeline number\n */\n\n/**\n * Adds appropriate media and discontinuity sequence values to the segments and playlists.\n *\n * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a\n * DASH specific attribute used in constructing segment URI's from templates. However, from\n * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence`\n * value, which should start at the original media sequence value (or 0) and increment by 1\n * for each segment thereafter. Since DASH's `startNumber` values are independent per\n * period, it doesn't make sense to use it for `number`. Instead, assume everything starts\n * from a 0 mediaSequence value and increment from there.\n *\n * Note that VHS currently doesn't use the `number` property, but it can be helpful for\n * debugging and making sense of the manifest.\n *\n * For live playlists, to account for values increasing in manifests when periods are\n * removed on refreshes, merging logic should be used to update the numbers to their\n * appropriate values (to ensure they're sequential and increasing).\n *\n * @param {Object[]} playlists - the playlists to update\n * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest\n */\n\n\nvar addMediaSequenceValues = function addMediaSequenceValues(playlists, timelineStarts) {\n // increment all segments sequentially\n playlists.forEach(function (playlist) {\n playlist.mediaSequence = 0;\n playlist.discontinuitySequence = findIndex(timelineStarts, function (_ref7) {\n var timeline = _ref7.timeline;\n return timeline === playlist.timeline;\n });\n\n if (!playlist.segments) {\n return;\n }\n\n playlist.segments.forEach(function (segment, index) {\n segment.number = index;\n });\n });\n};\n/**\n * Given a media group object, flattens all playlists within the media group into a single\n * array.\n *\n * @param {Object} mediaGroupObject - the media group object\n *\n * @return {Object[]}\n * The media group playlists\n */\n\nvar flattenMediaGroupPlaylists = function flattenMediaGroupPlaylists(mediaGroupObject) {\n if (!mediaGroupObject) {\n return [];\n }\n\n return Object.keys(mediaGroupObject).reduce(function (acc, label) {\n var labelContents = mediaGroupObject[label];\n return acc.concat(labelContents.playlists);\n }, []);\n};\nvar toM3u8 = function toM3u8(_ref8) {\n var _mediaGroups;\n\n var dashPlaylists = _ref8.dashPlaylists,\n locations = _ref8.locations,\n _ref8$sidxMapping = _ref8.sidxMapping,\n sidxMapping = _ref8$sidxMapping === void 0 ? {} : _ref8$sidxMapping,\n previousManifest = _ref8.previousManifest;\n\n if (!dashPlaylists.length) {\n return {};\n } // grab all main manifest attributes\n\n\n var _dashPlaylists$0$attr = dashPlaylists[0].attributes,\n duration = _dashPlaylists$0$attr.sourceDuration,\n type = _dashPlaylists$0$attr.type,\n suggestedPresentationDelay = _dashPlaylists$0$attr.suggestedPresentationDelay,\n minimumUpdatePeriod = _dashPlaylists$0$attr.minimumUpdatePeriod;\n var videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);\n var audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));\n var vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly));\n var captions = dashPlaylists.map(function (playlist) {\n return playlist.attributes.captionServices;\n }).filter(Boolean);\n var manifest = {\n allowCache: true,\n discontinuityStarts: [],\n segments: [],\n endList: true,\n mediaGroups: (_mediaGroups = {\n AUDIO: {},\n VIDEO: {}\n }, _mediaGroups['CLOSED-CAPTIONS'] = {}, _mediaGroups.SUBTITLES = {}, _mediaGroups),\n uri: '',\n duration: duration,\n playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping)\n };\n\n if (minimumUpdatePeriod >= 0) {\n manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000;\n }\n\n if (locations) {\n manifest.locations = locations;\n }\n\n if (type === 'dynamic') {\n manifest.suggestedPresentationDelay = suggestedPresentationDelay;\n }\n\n var isAudioOnly = manifest.playlists.length === 0;\n var organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null;\n var organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null;\n var formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup));\n var playlistTimelineStarts = formattedPlaylists.map(function (_ref9) {\n var timelineStarts = _ref9.timelineStarts;\n return timelineStarts;\n });\n manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts);\n addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts);\n\n if (organizedAudioGroup) {\n manifest.mediaGroups.AUDIO.audio = organizedAudioGroup;\n }\n\n if (organizedVttGroup) {\n manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup;\n }\n\n if (captions.length) {\n manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions);\n }\n\n if (previousManifest) {\n return positionManifestOnTimeline({\n oldManifest: previousManifest,\n newManifest: manifest\n });\n }\n\n return manifest;\n};\n\n/**\n * Calculates the R (repetition) value for a live stream (for the final segment\n * in a manifest where the r value is negative 1)\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {number} time\n * current time (typically the total time up until the final segment)\n * @param {number} duration\n * duration property for the given (of type URLType from the DASH spec 5.3.9.2 Table 14)\n * to an object that matches the output of a segment in videojs/mpd-parser\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object} segmentUrl\n * node to translate into a segment object\n * @return {Object} translated segment object\n */\n\nvar SegmentURLToSegmentObject = function SegmentURLToSegmentObject(attributes, segmentUrl) {\n var baseUrl = attributes.baseUrl,\n _attributes$initializ = attributes.initialization,\n initialization = _attributes$initializ === void 0 ? {} : _attributes$initializ;\n var initSegment = urlTypeToSegment({\n baseUrl: baseUrl,\n source: initialization.sourceURL,\n range: initialization.range\n });\n var segment = urlTypeToSegment({\n baseUrl: baseUrl,\n source: segmentUrl.media,\n range: segmentUrl.mediaRange\n });\n segment.map = initSegment;\n return segment;\n};\n/**\n * Generates a list of segments using information provided by the SegmentList element\n * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each\n * node should be translated into segment.\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {Object.} list of segments\n */\n\n\nvar segmentsFromList = function segmentsFromList(attributes, segmentTimeline) {\n var duration = attributes.duration,\n _attributes$segmentUr = attributes.segmentUrls,\n segmentUrls = _attributes$segmentUr === void 0 ? [] : _attributes$segmentUr,\n periodStart = attributes.periodStart; // Per spec (5.3.9.2.1) no way to determine segment duration OR\n // if both SegmentTimeline and @duration are defined, it is outside of spec.\n\n if (!duration && !segmentTimeline || duration && segmentTimeline) {\n throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);\n }\n\n var segmentUrlMap = segmentUrls.map(function (segmentUrlObject) {\n return SegmentURLToSegmentObject(attributes, segmentUrlObject);\n });\n var segmentTimeInfo;\n\n if (duration) {\n segmentTimeInfo = parseByDuration(attributes);\n }\n\n if (segmentTimeline) {\n segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);\n }\n\n var segments = segmentTimeInfo.map(function (segmentTime, index) {\n if (segmentUrlMap[index]) {\n var segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2\n // - if timescale isn't present on any level, default to 1.\n\n var timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n var presentationTimeOffset = attributes.presentationTimeOffset || 0;\n segment.timeline = segmentTime.timeline;\n segment.duration = segmentTime.duration;\n segment.number = segmentTime.number;\n segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale;\n return segment;\n } // Since we're mapping we should get rid of any blank segments (in case\n // the given SegmentTimeline is handling for more elements than we have\n // SegmentURLs for).\n\n }).filter(function (segment) {\n return segment;\n });\n return segments;\n};\n\nvar generateSegments = function generateSegments(_ref) {\n var attributes = _ref.attributes,\n segmentInfo = _ref.segmentInfo;\n var segmentAttributes;\n var segmentsFn;\n\n if (segmentInfo.template) {\n segmentsFn = segmentsFromTemplate;\n segmentAttributes = merge(attributes, segmentInfo.template);\n } else if (segmentInfo.base) {\n segmentsFn = segmentsFromBase;\n segmentAttributes = merge(attributes, segmentInfo.base);\n } else if (segmentInfo.list) {\n segmentsFn = segmentsFromList;\n segmentAttributes = merge(attributes, segmentInfo.list);\n }\n\n var segmentsInfo = {\n attributes: attributes\n };\n\n if (!segmentsFn) {\n return segmentsInfo;\n }\n\n var segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which\n // must be in seconds. Since we've generated the segment list, we no longer need\n // @duration to be in @timescale units, so we can convert it here.\n\n if (segmentAttributes.duration) {\n var _segmentAttributes = segmentAttributes,\n duration = _segmentAttributes.duration,\n _segmentAttributes$ti = _segmentAttributes.timescale,\n timescale = _segmentAttributes$ti === void 0 ? 1 : _segmentAttributes$ti;\n segmentAttributes.duration = duration / timescale;\n } else if (segments.length) {\n // if there is no @duration attribute, use the largest segment duration as\n // as target duration\n segmentAttributes.duration = segments.reduce(function (max, segment) {\n return Math.max(max, Math.ceil(segment.duration));\n }, 0);\n } else {\n segmentAttributes.duration = 0;\n }\n\n segmentsInfo.attributes = segmentAttributes;\n segmentsInfo.segments = segments; // This is a sidx box without actual segment information\n\n if (segmentInfo.base && segmentAttributes.indexRange) {\n segmentsInfo.sidx = segments[0];\n segmentsInfo.segments = [];\n }\n\n return segmentsInfo;\n};\nvar toPlaylists = function toPlaylists(representations) {\n return representations.map(generateSegments);\n};\n\nvar findChildren = function findChildren(element, name) {\n return from(element.childNodes).filter(function (_ref) {\n var tagName = _ref.tagName;\n return tagName === name;\n });\n};\nvar getContent = function getContent(element) {\n return element.textContent.trim();\n};\n\n/**\n * Converts the provided string that may contain a division operation to a number.\n *\n * @param {string} value - the provided string value\n *\n * @return {number} the parsed string value\n */\nvar parseDivisionValue = function parseDivisionValue(value) {\n return parseFloat(value.split('/').reduce(function (prev, current) {\n return prev / current;\n }));\n};\n\nvar parseDuration = function parseDuration(str) {\n var SECONDS_IN_YEAR = 365 * 24 * 60 * 60;\n var SECONDS_IN_MONTH = 30 * 24 * 60 * 60;\n var SECONDS_IN_DAY = 24 * 60 * 60;\n var SECONDS_IN_HOUR = 60 * 60;\n var SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S\n\n var durationRegex = /P(?:(\\d*)Y)?(?:(\\d*)M)?(?:(\\d*)D)?(?:T(?:(\\d*)H)?(?:(\\d*)M)?(?:([\\d.]*)S)?)?/;\n var match = durationRegex.exec(str);\n\n if (!match) {\n return 0;\n }\n\n var _match$slice = match.slice(1),\n year = _match$slice[0],\n month = _match$slice[1],\n day = _match$slice[2],\n hour = _match$slice[3],\n minute = _match$slice[4],\n second = _match$slice[5];\n\n return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);\n};\nvar parseDate = function parseDate(str) {\n // Date format without timezone according to ISO 8601\n // YYY-MM-DDThh:mm:ss.ssssss\n var dateRegex = /^\\d+-\\d+-\\d+T\\d+:\\d+:\\d+(\\.\\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is\n // expressed by ending with 'Z'\n\n if (dateRegex.test(str)) {\n str += 'Z';\n }\n\n return Date.parse(str);\n};\n\nvar parsers = {\n /**\n * Specifies the duration of the entire Media Presentation. Format is a duration string\n * as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n mediaPresentationDuration: function mediaPresentationDuration(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the Segment availability start time for all Segments referred to in this\n * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability\n * time. Format is a date string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The date as seconds from unix epoch\n */\n availabilityStartTime: function availabilityStartTime(value) {\n return parseDate(value) / 1000;\n },\n\n /**\n * Specifies the smallest period between potential changes to the MPD. Format is a\n * duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n minimumUpdatePeriod: function minimumUpdatePeriod(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the suggested presentation delay. Format is a\n * duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n suggestedPresentationDelay: function suggestedPresentationDelay(value) {\n return parseDuration(value);\n },\n\n /**\n * specifices the type of mpd. Can be either \"static\" or \"dynamic\"\n *\n * @param {string} value\n * value of attribute as a string\n *\n * @return {string}\n * The type as a string\n */\n type: function type(value) {\n return value;\n },\n\n /**\n * Specifies the duration of the smallest time shifting buffer for any Representation\n * in the MPD. Format is a duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n timeShiftBufferDepth: function timeShiftBufferDepth(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.\n * Format is a duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n start: function start(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the width of the visual presentation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed width\n */\n width: function width(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the height of the visual presentation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed height\n */\n height: function height(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the bitrate of the representation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed bandwidth\n */\n bandwidth: function bandwidth(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the frame rate of the representation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed frame rate\n */\n frameRate: function frameRate(value) {\n return parseDivisionValue(value);\n },\n\n /**\n * Specifies the number of the first Media Segment in this Representation in the Period\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed number\n */\n startNumber: function startNumber(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the timescale in units per seconds\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed timescale\n */\n timescale: function timescale(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the presentationTimeOffset.\n *\n * @param {string} value\n * value of the attribute as a string\n *\n * @return {number}\n * The parsed presentationTimeOffset\n */\n presentationTimeOffset: function presentationTimeOffset(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the constant approximate Segment duration\n * NOTE: The element also contains an @duration attribute. This duration\n * specifies the duration of the Period. This attribute is currently not\n * supported by the rest of the parser, however we still check for it to prevent\n * errors.\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed duration\n */\n duration: function duration(value) {\n var parsedValue = parseInt(value, 10);\n\n if (isNaN(parsedValue)) {\n return parseDuration(value);\n }\n\n return parsedValue;\n },\n\n /**\n * Specifies the Segment duration, in units of the value of the @timescale.\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed duration\n */\n d: function d(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the MPD start time, in @timescale units, the first Segment in the series\n * starts relative to the beginning of the Period\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed time\n */\n t: function t(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the repeat count of the number of following contiguous Segments with the\n * same duration expressed by the value of @d\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed number\n */\n r: function r(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Default parser for all other attributes. Acts as a no-op and just returns the value\n * as a string\n *\n * @param {string} value\n * value of attribute as a string\n * @return {string}\n * Unparsed value\n */\n DEFAULT: function DEFAULT(value) {\n return value;\n }\n};\n/**\n * Gets all the attributes and values of the provided node, parses attributes with known\n * types, and returns an object with attribute names mapped to values.\n *\n * @param {Node} el\n * The node to parse attributes from\n * @return {Object}\n * Object with all attributes of el parsed\n */\n\nvar parseAttributes = function parseAttributes(el) {\n if (!(el && el.attributes)) {\n return {};\n }\n\n return from(el.attributes).reduce(function (a, e) {\n var parseFn = parsers[e.name] || parsers.DEFAULT;\n a[e.name] = parseFn(e.value);\n return a;\n }, {});\n};\n\nvar keySystemsMap = {\n 'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',\n 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',\n 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',\n 'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime'\n};\n/**\n * Builds a list of urls that is the product of the reference urls and BaseURL values\n *\n * @param {string[]} referenceUrls\n * List of reference urls to resolve to\n * @param {Node[]} baseUrlElements\n * List of BaseURL nodes from the mpd\n * @return {string[]}\n * List of resolved urls\n */\n\nvar buildBaseUrls = function buildBaseUrls(referenceUrls, baseUrlElements) {\n if (!baseUrlElements.length) {\n return referenceUrls;\n }\n\n return flatten(referenceUrls.map(function (reference) {\n return baseUrlElements.map(function (baseUrlElement) {\n return resolveUrl(reference, getContent(baseUrlElement));\n });\n }));\n};\n/**\n * Contains all Segment information for its containing AdaptationSet\n *\n * @typedef {Object} SegmentInformation\n * @property {Object|undefined} template\n * Contains the attributes for the SegmentTemplate node\n * @property {Object[]|undefined} segmentTimeline\n * Contains a list of atrributes for each S node within the SegmentTimeline node\n * @property {Object|undefined} list\n * Contains the attributes for the SegmentList node\n * @property {Object|undefined} base\n * Contains the attributes for the SegmentBase node\n */\n\n/**\n * Returns all available Segment information contained within the AdaptationSet node\n *\n * @param {Node} adaptationSet\n * The AdaptationSet node to get Segment information from\n * @return {SegmentInformation}\n * The Segment information contained within the provided AdaptationSet\n */\n\nvar getSegmentInformation = function getSegmentInformation(adaptationSet) {\n var segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];\n var segmentList = findChildren(adaptationSet, 'SegmentList')[0];\n var segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(function (s) {\n return merge({\n tag: 'SegmentURL'\n }, parseAttributes(s));\n });\n var segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];\n var segmentTimelineParentNode = segmentList || segmentTemplate;\n var segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];\n var segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;\n var segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both\n // @initialization and an node. @initialization can be templated,\n // while the node can have a url and range specified. If the has\n // both @initialization and an subelement we opt to override with\n // the node, as this interaction is not defined in the spec.\n\n var template = segmentTemplate && parseAttributes(segmentTemplate);\n\n if (template && segmentInitialization) {\n template.initialization = segmentInitialization && parseAttributes(segmentInitialization);\n } else if (template && template.initialization) {\n // If it is @initialization we convert it to an object since this is the format that\n // later functions will rely on for the initialization segment. This is only valid\n // for \n template.initialization = {\n sourceURL: template.initialization\n };\n }\n\n var segmentInfo = {\n template: template,\n segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(function (s) {\n return parseAttributes(s);\n }),\n list: segmentList && merge(parseAttributes(segmentList), {\n segmentUrls: segmentUrls,\n initialization: parseAttributes(segmentInitialization)\n }),\n base: segmentBase && merge(parseAttributes(segmentBase), {\n initialization: parseAttributes(segmentInitialization)\n })\n };\n Object.keys(segmentInfo).forEach(function (key) {\n if (!segmentInfo[key]) {\n delete segmentInfo[key];\n }\n });\n return segmentInfo;\n};\n/**\n * Contains Segment information and attributes needed to construct a Playlist object\n * from a Representation\n *\n * @typedef {Object} RepresentationInformation\n * @property {SegmentInformation} segmentInfo\n * Segment information for this Representation\n * @property {Object} attributes\n * Inherited attributes for this Representation\n */\n\n/**\n * Maps a Representation node to an object containing Segment information and attributes\n *\n * @name inheritBaseUrlsCallback\n * @function\n * @param {Node} representation\n * Representation node from the mpd\n * @return {RepresentationInformation}\n * Representation information needed to construct a Playlist object\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping Representation nodes to\n * Segment information and attributes using inherited BaseURL nodes.\n *\n * @param {Object} adaptationSetAttributes\n * Contains attributes inherited by the AdaptationSet\n * @param {string[]} adaptationSetBaseUrls\n * Contains list of resolved base urls inherited by the AdaptationSet\n * @param {SegmentInformation} adaptationSetSegmentInfo\n * Contains Segment information for the AdaptationSet\n * @return {inheritBaseUrlsCallback}\n * Callback map function\n */\n\nvar inheritBaseUrls = function inheritBaseUrls(adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) {\n return function (representation) {\n var repBaseUrlElements = findChildren(representation, 'BaseURL');\n var repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);\n var attributes = merge(adaptationSetAttributes, parseAttributes(representation));\n var representationSegmentInfo = getSegmentInformation(representation);\n return repBaseUrls.map(function (baseUrl) {\n return {\n segmentInfo: merge(adaptationSetSegmentInfo, representationSegmentInfo),\n attributes: merge(attributes, {\n baseUrl: baseUrl\n })\n };\n });\n };\n};\n/**\n * Tranforms a series of content protection nodes to\n * an object containing pssh data by key system\n *\n * @param {Node[]} contentProtectionNodes\n * Content protection nodes\n * @return {Object}\n * Object containing pssh data by key system\n */\n\nvar generateKeySystemInformation = function generateKeySystemInformation(contentProtectionNodes) {\n return contentProtectionNodes.reduce(function (acc, node) {\n var attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated\n // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system\n // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do\n // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one).\n\n if (attributes.schemeIdUri) {\n attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase();\n }\n\n var keySystem = keySystemsMap[attributes.schemeIdUri];\n\n if (keySystem) {\n acc[keySystem] = {\n attributes: attributes\n };\n var psshNode = findChildren(node, 'cenc:pssh')[0];\n\n if (psshNode) {\n var pssh = getContent(psshNode);\n acc[keySystem].pssh = pssh && decodeB64ToUint8Array(pssh);\n }\n }\n\n return acc;\n }, {});\n}; // defined in ANSI_SCTE 214-1 2016\n\n\nvar parseCaptionServiceMetadata = function parseCaptionServiceMetadata(service) {\n // 608 captions\n if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') {\n var values = typeof service.value !== 'string' ? [] : service.value.split(';');\n return values.map(function (value) {\n var channel;\n var language; // default language to value\n\n language = value;\n\n if (/^CC\\d=/.test(value)) {\n var _value$split = value.split('=');\n\n channel = _value$split[0];\n language = _value$split[1];\n } else if (/^CC\\d$/.test(value)) {\n channel = value;\n }\n\n return {\n channel: channel,\n language: language\n };\n });\n } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') {\n var _values = typeof service.value !== 'string' ? [] : service.value.split(';');\n\n return _values.map(function (value) {\n var flags = {\n // service or channel number 1-63\n 'channel': undefined,\n // language is a 3ALPHA per ISO 639.2/B\n // field is required\n 'language': undefined,\n // BIT 1/0 or ?\n // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown\n 'aspectRatio': 1,\n // BIT 1/0\n // easy reader flag indicated the text is tailed to the needs of beginning readers\n // default 0, or off\n 'easyReader': 0,\n // BIT 1/0\n // If 3d metadata is present (CEA-708.1) then 1\n // default 0\n '3D': 0\n };\n\n if (/=/.test(value)) {\n var _value$split2 = value.split('='),\n channel = _value$split2[0],\n _value$split2$ = _value$split2[1],\n opts = _value$split2$ === void 0 ? '' : _value$split2$;\n\n flags.channel = channel;\n flags.language = value;\n opts.split(',').forEach(function (opt) {\n var _opt$split = opt.split(':'),\n name = _opt$split[0],\n val = _opt$split[1];\n\n if (name === 'lang') {\n flags.language = val; // er for easyReadery\n } else if (name === 'er') {\n flags.easyReader = Number(val); // war for wide aspect ratio\n } else if (name === 'war') {\n flags.aspectRatio = Number(val);\n } else if (name === '3D') {\n flags['3D'] = Number(val);\n }\n });\n } else {\n flags.language = value;\n }\n\n if (flags.channel) {\n flags.channel = 'SERVICE' + flags.channel;\n }\n\n return flags;\n });\n }\n};\n/**\n * Maps an AdaptationSet node to a list of Representation information objects\n *\n * @name toRepresentationsCallback\n * @function\n * @param {Node} adaptationSet\n * AdaptationSet node from the mpd\n * @return {RepresentationInformation[]}\n * List of objects containing Representaion information\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of\n * Representation information objects\n *\n * @param {Object} periodAttributes\n * Contains attributes inherited by the Period\n * @param {string[]} periodBaseUrls\n * Contains list of resolved base urls inherited by the Period\n * @param {string[]} periodSegmentInfo\n * Contains Segment Information at the period level\n * @return {toRepresentationsCallback}\n * Callback map function\n */\n\nvar toRepresentations = function toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo) {\n return function (adaptationSet) {\n var adaptationSetAttributes = parseAttributes(adaptationSet);\n var adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));\n var role = findChildren(adaptationSet, 'Role')[0];\n var roleAttributes = {\n role: parseAttributes(role)\n };\n var attrs = merge(periodAttributes, adaptationSetAttributes, roleAttributes);\n var accessibility = findChildren(adaptationSet, 'Accessibility')[0];\n var captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility));\n\n if (captionServices) {\n attrs = merge(attrs, {\n captionServices: captionServices\n });\n }\n\n var label = findChildren(adaptationSet, 'Label')[0];\n\n if (label && label.childNodes.length) {\n var labelVal = label.childNodes[0].nodeValue.trim();\n attrs = merge(attrs, {\n label: labelVal\n });\n }\n\n var contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));\n\n if (Object.keys(contentProtection).length) {\n attrs = merge(attrs, {\n contentProtection: contentProtection\n });\n }\n\n var segmentInfo = getSegmentInformation(adaptationSet);\n var representations = findChildren(adaptationSet, 'Representation');\n var adaptationSetSegmentInfo = merge(periodSegmentInfo, segmentInfo);\n return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));\n };\n};\n/**\n * Contains all period information for mapping nodes onto adaptation sets.\n *\n * @typedef {Object} PeriodInformation\n * @property {Node} period.node\n * Period node from the mpd\n * @property {Object} period.attributes\n * Parsed period attributes from node plus any added\n */\n\n/**\n * Maps a PeriodInformation object to a list of Representation information objects for all\n * AdaptationSet nodes contained within the Period.\n *\n * @name toAdaptationSetsCallback\n * @function\n * @param {PeriodInformation} period\n * Period object containing necessary period information\n * @param {number} periodStart\n * Start time of the Period within the mpd\n * @return {RepresentationInformation[]}\n * List of objects containing Representaion information\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping Period nodes to a list of\n * Representation information objects\n *\n * @param {Object} mpdAttributes\n * Contains attributes inherited by the mpd\n * @param {string[]} mpdBaseUrls\n * Contains list of resolved base urls inherited by the mpd\n * @return {toAdaptationSetsCallback}\n * Callback map function\n */\n\nvar toAdaptationSets = function toAdaptationSets(mpdAttributes, mpdBaseUrls) {\n return function (period, index) {\n var periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL'));\n var periodAttributes = merge(mpdAttributes, {\n periodStart: period.attributes.start\n });\n\n if (typeof period.attributes.duration === 'number') {\n periodAttributes.periodDuration = period.attributes.duration;\n }\n\n var adaptationSets = findChildren(period.node, 'AdaptationSet');\n var periodSegmentInfo = getSegmentInformation(period.node);\n return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));\n };\n};\n/**\n * Gets Period@start property for a given period.\n *\n * @param {Object} options\n * Options object\n * @param {Object} options.attributes\n * Period attributes\n * @param {Object} [options.priorPeriodAttributes]\n * Prior period attributes (if prior period is available)\n * @param {string} options.mpdType\n * The MPD@type these periods came from\n * @return {number|null}\n * The period start, or null if it's an early available period or error\n */\n\nvar getPeriodStart = function getPeriodStart(_ref) {\n var attributes = _ref.attributes,\n priorPeriodAttributes = _ref.priorPeriodAttributes,\n mpdType = _ref.mpdType;\n\n // Summary of period start time calculation from DASH spec section 5.3.2.1\n //\n // A period's start is the first period's start + time elapsed after playing all\n // prior periods to this one. Periods continue one after the other in time (without\n // gaps) until the end of the presentation.\n //\n // The value of Period@start should be:\n // 1. if Period@start is present: value of Period@start\n // 2. if previous period exists and it has @duration: previous Period@start +\n // previous Period@duration\n // 3. if this is first period and MPD@type is 'static': 0\n // 4. in all other cases, consider the period an \"early available period\" (note: not\n // currently supported)\n // (1)\n if (typeof attributes.start === 'number') {\n return attributes.start;\n } // (2)\n\n\n if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') {\n return priorPeriodAttributes.start + priorPeriodAttributes.duration;\n } // (3)\n\n\n if (!priorPeriodAttributes && mpdType === 'static') {\n return 0;\n } // (4)\n // There is currently no logic for calculating the Period@start value if there is\n // no Period@start or prior Period@start and Period@duration available. This is not made\n // explicit by the DASH interop guidelines or the DASH spec, however, since there's\n // nothing about any other resolution strategies, it's implied. Thus, this case should\n // be considered an early available period, or error, and null should suffice for both\n // of those cases.\n\n\n return null;\n};\n/**\n * Traverses the mpd xml tree to generate a list of Representation information objects\n * that have inherited attributes from parent nodes\n *\n * @param {Node} mpd\n * The root node of the mpd\n * @param {Object} options\n * Available options for inheritAttributes\n * @param {string} options.manifestUri\n * The uri source of the mpd\n * @param {number} options.NOW\n * Current time per DASH IOP. Default is current time in ms since epoch\n * @param {number} options.clientOffset\n * Client time difference from NOW (in milliseconds)\n * @return {RepresentationInformation[]}\n * List of objects containing Representation information\n */\n\nvar inheritAttributes = function inheritAttributes(mpd, options) {\n if (options === void 0) {\n options = {};\n }\n\n var _options = options,\n _options$manifestUri = _options.manifestUri,\n manifestUri = _options$manifestUri === void 0 ? '' : _options$manifestUri,\n _options$NOW = _options.NOW,\n NOW = _options$NOW === void 0 ? Date.now() : _options$NOW,\n _options$clientOffset = _options.clientOffset,\n clientOffset = _options$clientOffset === void 0 ? 0 : _options$clientOffset;\n var periodNodes = findChildren(mpd, 'Period');\n\n if (!periodNodes.length) {\n throw new Error(errors.INVALID_NUMBER_OF_PERIOD);\n }\n\n var locations = findChildren(mpd, 'Location');\n var mpdAttributes = parseAttributes(mpd);\n var mpdBaseUrls = buildBaseUrls([manifestUri], findChildren(mpd, 'BaseURL')); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.\n\n mpdAttributes.type = mpdAttributes.type || 'static';\n mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;\n mpdAttributes.NOW = NOW;\n mpdAttributes.clientOffset = clientOffset;\n\n if (locations.length) {\n mpdAttributes.locations = locations.map(getContent);\n }\n\n var periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to\n // adding properties that require looking at prior periods is to parse attributes and add\n // missing ones before toAdaptationSets is called. If more such properties are added, it\n // may be better to refactor toAdaptationSets.\n\n periodNodes.forEach(function (node, index) {\n var attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary\n // for this period.\n\n var priorPeriod = periods[index - 1];\n attributes.start = getPeriodStart({\n attributes: attributes,\n priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null,\n mpdType: mpdAttributes.type\n });\n periods.push({\n node: node,\n attributes: attributes\n });\n });\n return {\n locations: mpdAttributes.locations,\n representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls)))\n };\n};\n\nvar stringToMpdXml = function stringToMpdXml(manifestString) {\n if (manifestString === '') {\n throw new Error(errors.DASH_EMPTY_MANIFEST);\n }\n\n var parser = new DOMParser();\n var xml;\n var mpd;\n\n try {\n xml = parser.parseFromString(manifestString, 'application/xml');\n mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;\n } catch (e) {// ie 11 throwsw on invalid xml\n }\n\n if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {\n throw new Error(errors.DASH_INVALID_XML);\n }\n\n return mpd;\n};\n\n/**\n * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n *\n * @param {string} mpd\n * XML string of the MPD manifest\n * @return {Object|null}\n * Attributes of UTCTiming node specified in the manifest. Null if none found\n */\n\nvar parseUTCTimingScheme = function parseUTCTimingScheme(mpd) {\n var UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];\n\n if (!UTCTimingNode) {\n return null;\n }\n\n var attributes = parseAttributes(UTCTimingNode);\n\n switch (attributes.schemeIdUri) {\n case 'urn:mpeg:dash:utc:http-head:2014':\n case 'urn:mpeg:dash:utc:http-head:2012':\n attributes.method = 'HEAD';\n break;\n\n case 'urn:mpeg:dash:utc:http-xsdate:2014':\n case 'urn:mpeg:dash:utc:http-iso:2014':\n case 'urn:mpeg:dash:utc:http-xsdate:2012':\n case 'urn:mpeg:dash:utc:http-iso:2012':\n attributes.method = 'GET';\n break;\n\n case 'urn:mpeg:dash:utc:direct:2014':\n case 'urn:mpeg:dash:utc:direct:2012':\n attributes.method = 'DIRECT';\n attributes.value = Date.parse(attributes.value);\n break;\n\n case 'urn:mpeg:dash:utc:http-ntp:2014':\n case 'urn:mpeg:dash:utc:ntp:2014':\n case 'urn:mpeg:dash:utc:sntp:2014':\n default:\n throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);\n }\n\n return attributes;\n};\n\nvar VERSION = version;\n/*\n * Given a DASH manifest string and options, parses the DASH manifest into an object in the\n * form outputed by m3u8-parser and accepted by videojs/http-streaming.\n *\n * For live DASH manifests, if `previousManifest` is provided in options, then the newly\n * parsed DASH manifest will have its media sequence and discontinuity sequence values\n * updated to reflect its position relative to the prior manifest.\n *\n * @param {string} manifestString - the DASH manifest as a string\n * @param {options} [options] - any options\n *\n * @return {Object} the manifest object\n */\n\nvar parse = function parse(manifestString, options) {\n if (options === void 0) {\n options = {};\n }\n\n var parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options);\n var playlists = toPlaylists(parsedManifestInfo.representationInfo);\n return toM3u8({\n dashPlaylists: playlists,\n locations: parsedManifestInfo.locations,\n sidxMapping: options.sidxMapping,\n previousManifest: options.previousManifest\n });\n};\n/**\n * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n *\n * @param {string} manifestString\n * XML string of the MPD manifest\n * @return {Object|null}\n * Attributes of UTCTiming node specified in the manifest. Null if none found\n */\n\n\nvar parseUTCTiming = function parseUTCTiming(manifestString) {\n return parseUTCTimingScheme(stringToMpdXml(manifestString));\n};\n\nexport { VERSION, addSidxSegmentsToPlaylist$1 as addSidxSegmentsToPlaylist, generateSidxKey, inheritAttributes, parse, parseUTCTiming, stringToMpdXml, toM3u8, toPlaylists };\n","/**\n * Loops through all supported media groups in master and calls the provided\n * callback for each group\n *\n * @param {Object} master\n * The parsed master manifest object\n * @param {string[]} groups\n * The media groups to call the callback for\n * @param {Function} callback\n * Callback to call for each media group\n */\nexport var forEachMediaGroup = function forEachMediaGroup(master, groups, callback) {\n groups.forEach(function (mediaType) {\n for (var groupKey in master.mediaGroups[mediaType]) {\n for (var labelKey in master.mediaGroups[mediaType][groupKey]) {\n var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];\n callback(mediaProperties, mediaType, groupKey, labelKey);\n }\n }\n });\n};","import { toUint8, bytesMatch } from './byte-helpers.js';\nvar ID3 = toUint8([0x49, 0x44, 0x33]);\nexport var getId3Size = function getId3Size(bytes, offset) {\n if (offset === void 0) {\n offset = 0;\n }\n\n bytes = toUint8(bytes);\n var flags = bytes[offset + 5];\n var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9];\n var footerPresent = (flags & 16) >> 4;\n\n if (footerPresent) {\n return returnSize + 20;\n }\n\n return returnSize + 10;\n};\nexport var getId3Offset = function getId3Offset(bytes, offset) {\n if (offset === void 0) {\n offset = 0;\n }\n\n bytes = toUint8(bytes);\n\n if (bytes.length - offset < 10 || !bytesMatch(bytes, ID3, {\n offset: offset\n })) {\n return offset;\n }\n\n offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files\n // have multiple ID3 tag sections even though\n // they should not.\n\n return getId3Offset(bytes, offset);\n};","export var OPUS_HEAD = new Uint8Array([// O, p, u, s\n0x4f, 0x70, 0x75, 0x73, // H, e, a, d\n0x48, 0x65, 0x61, 0x64]); // https://wiki.xiph.org/OggOpus\n// https://vfrmaniac.fushizen.eu/contents/opus_in_isobmff.html\n// https://opus-codec.org/docs/opusfile_api-0.7/structOpusHead.html\n\nexport var parseOpusHead = function parseOpusHead(bytes) {\n var view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);\n var version = view.getUint8(0); // version 0, from mp4, does not use littleEndian.\n\n var littleEndian = version !== 0;\n var config = {\n version: version,\n channels: view.getUint8(1),\n preSkip: view.getUint16(2, littleEndian),\n sampleRate: view.getUint32(4, littleEndian),\n outputGain: view.getUint16(8, littleEndian),\n channelMappingFamily: view.getUint8(10)\n };\n\n if (config.channelMappingFamily > 0 && bytes.length > 10) {\n config.streamCount = view.getUint8(11);\n config.twoChannelStreamCount = view.getUint8(12);\n config.channelMapping = [];\n\n for (var c = 0; c < config.channels; c++) {\n config.channelMapping.push(view.getUint8(13 + c));\n }\n }\n\n return config;\n};\nexport var setOpusHead = function setOpusHead(config) {\n var size = config.channelMappingFamily <= 0 ? 11 : 12 + config.channels;\n var view = new DataView(new ArrayBuffer(size));\n var littleEndian = config.version !== 0;\n view.setUint8(0, config.version);\n view.setUint8(1, config.channels);\n view.setUint16(2, config.preSkip, littleEndian);\n view.setUint32(4, config.sampleRate, littleEndian);\n view.setUint16(8, config.outputGain, littleEndian);\n view.setUint8(10, config.channelMappingFamily);\n\n if (config.channelMappingFamily > 0) {\n view.setUint8(11, config.streamCount);\n config.channelMapping.foreach(function (cm, i) {\n view.setUint8(12 + i, cm);\n });\n }\n\n return new Uint8Array(view.buffer);\n};","import { toUint8, bytesToNumber, bytesMatch, bytesToString, numberToBytes, padStart } from './byte-helpers';\nimport { getAvcCodec, getHvcCodec, getAv1Codec } from './codec-helpers.js'; // relevant specs for this parser:\n// https://matroska-org.github.io/libebml/specs.html\n// https://www.matroska.org/technical/elements.html\n// https://www.webmproject.org/docs/container/\n\nexport var EBML_TAGS = {\n EBML: toUint8([0x1A, 0x45, 0xDF, 0xA3]),\n DocType: toUint8([0x42, 0x82]),\n Segment: toUint8([0x18, 0x53, 0x80, 0x67]),\n SegmentInfo: toUint8([0x15, 0x49, 0xA9, 0x66]),\n Tracks: toUint8([0x16, 0x54, 0xAE, 0x6B]),\n Track: toUint8([0xAE]),\n TrackNumber: toUint8([0xd7]),\n DefaultDuration: toUint8([0x23, 0xe3, 0x83]),\n TrackEntry: toUint8([0xAE]),\n TrackType: toUint8([0x83]),\n FlagDefault: toUint8([0x88]),\n CodecID: toUint8([0x86]),\n CodecPrivate: toUint8([0x63, 0xA2]),\n VideoTrack: toUint8([0xe0]),\n AudioTrack: toUint8([0xe1]),\n // Not used yet, but will be used for live webm/mkv\n // see https://www.matroska.org/technical/basics.html#block-structure\n // see https://www.matroska.org/technical/basics.html#simpleblock-structure\n Cluster: toUint8([0x1F, 0x43, 0xB6, 0x75]),\n Timestamp: toUint8([0xE7]),\n TimestampScale: toUint8([0x2A, 0xD7, 0xB1]),\n BlockGroup: toUint8([0xA0]),\n BlockDuration: toUint8([0x9B]),\n Block: toUint8([0xA1]),\n SimpleBlock: toUint8([0xA3])\n};\n/**\n * This is a simple table to determine the length\n * of things in ebml. The length is one based (starts at 1,\n * rather than zero) and for every zero bit before a one bit\n * we add one to length. We also need this table because in some\n * case we have to xor all the length bits from another value.\n */\n\nvar LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1];\n\nvar getLength = function getLength(byte) {\n var len = 1;\n\n for (var i = 0; i < LENGTH_TABLE.length; i++) {\n if (byte & LENGTH_TABLE[i]) {\n break;\n }\n\n len++;\n }\n\n return len;\n}; // length in ebml is stored in the first 4 to 8 bits\n// of the first byte. 4 for the id length and 8 for the\n// data size length. Length is measured by converting the number to binary\n// then 1 + the number of zeros before a 1 is encountered starting\n// from the left.\n\n\nvar getvint = function getvint(bytes, offset, removeLength, signed) {\n if (removeLength === void 0) {\n removeLength = true;\n }\n\n if (signed === void 0) {\n signed = false;\n }\n\n var length = getLength(bytes[offset]);\n var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes\n // as they will be modified below to remove the dataSizeLen bits and we do not\n // want to modify the original data. normally we could just call slice on\n // uint8array but ie 11 does not support that...\n\n if (removeLength) {\n valueBytes = Array.prototype.slice.call(bytes, offset, offset + length);\n valueBytes[0] ^= LENGTH_TABLE[length - 1];\n }\n\n return {\n length: length,\n value: bytesToNumber(valueBytes, {\n signed: signed\n }),\n bytes: valueBytes\n };\n};\n\nvar normalizePath = function normalizePath(path) {\n if (typeof path === 'string') {\n return path.match(/.{1,2}/g).map(function (p) {\n return normalizePath(p);\n });\n }\n\n if (typeof path === 'number') {\n return numberToBytes(path);\n }\n\n return path;\n};\n\nvar normalizePaths = function normalizePaths(paths) {\n if (!Array.isArray(paths)) {\n return [normalizePath(paths)];\n }\n\n return paths.map(function (p) {\n return normalizePath(p);\n });\n};\n\nvar getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) {\n if (offset >= bytes.length) {\n return bytes.length;\n }\n\n var innerid = getvint(bytes, offset, false);\n\n if (bytesMatch(id.bytes, innerid.bytes)) {\n return offset;\n }\n\n var dataHeader = getvint(bytes, offset + innerid.length);\n return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length);\n};\n/**\n * Notes on the EBLM format.\n *\n * EBLM uses \"vints\" tags. Every vint tag contains\n * two parts\n *\n * 1. The length from the first byte. You get this by\n * converting the byte to binary and counting the zeros\n * before a 1. Then you add 1 to that. Examples\n * 00011111 = length 4 because there are 3 zeros before a 1.\n * 00100000 = length 3 because there are 2 zeros before a 1.\n * 00000011 = length 7 because there are 6 zeros before a 1.\n *\n * 2. The bits used for length are removed from the first byte\n * Then all the bytes are merged into a value. NOTE: this\n * is not the case for id ebml tags as there id includes\n * length bits.\n *\n */\n\n\nexport var findEbml = function findEbml(bytes, paths) {\n paths = normalizePaths(paths);\n bytes = toUint8(bytes);\n var results = [];\n\n if (!paths.length) {\n return results;\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n var id = getvint(bytes, i, false);\n var dataHeader = getvint(bytes, i + id.length);\n var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream\n\n if (dataHeader.value === 0x7f) {\n dataHeader.value = getInfinityDataSize(id, bytes, dataStart);\n\n if (dataHeader.value !== bytes.length) {\n dataHeader.value -= dataStart;\n }\n }\n\n var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value;\n var data = bytes.subarray(dataStart, dataEnd);\n\n if (bytesMatch(paths[0], id.bytes)) {\n if (paths.length === 1) {\n // this is the end of the paths and we've found the tag we were\n // looking for\n results.push(data);\n } else {\n // recursively search for the next tag inside of the data\n // of this one\n results = results.concat(findEbml(data, paths.slice(1)));\n }\n }\n\n var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it\n\n i += totalLength;\n }\n\n return results;\n}; // see https://www.matroska.org/technical/basics.html#block-structure\n\nexport var decodeBlock = function decodeBlock(block, type, timestampScale, clusterTimestamp) {\n var duration;\n\n if (type === 'group') {\n duration = findEbml(block, [EBML_TAGS.BlockDuration])[0];\n\n if (duration) {\n duration = bytesToNumber(duration);\n duration = 1 / timestampScale * duration * timestampScale / 1000;\n }\n\n block = findEbml(block, [EBML_TAGS.Block])[0];\n type = 'block'; // treat data as a block after this point\n }\n\n var dv = new DataView(block.buffer, block.byteOffset, block.byteLength);\n var trackNumber = getvint(block, 0);\n var timestamp = dv.getInt16(trackNumber.length, false);\n var flags = block[trackNumber.length + 2];\n var data = block.subarray(trackNumber.length + 3); // pts/dts in seconds\n\n var ptsdts = 1 / timestampScale * (clusterTimestamp + timestamp) * timestampScale / 1000; // return the frame\n\n var parsed = {\n duration: duration,\n trackNumber: trackNumber.value,\n keyframe: type === 'simple' && flags >> 7 === 1,\n invisible: (flags & 0x08) >> 3 === 1,\n lacing: (flags & 0x06) >> 1,\n discardable: type === 'simple' && (flags & 0x01) === 1,\n frames: [],\n pts: ptsdts,\n dts: ptsdts,\n timestamp: timestamp\n };\n\n if (!parsed.lacing) {\n parsed.frames.push(data);\n return parsed;\n }\n\n var numberOfFrames = data[0] + 1;\n var frameSizes = [];\n var offset = 1; // Fixed\n\n if (parsed.lacing === 2) {\n var sizeOfFrame = (data.length - offset) / numberOfFrames;\n\n for (var i = 0; i < numberOfFrames; i++) {\n frameSizes.push(sizeOfFrame);\n }\n } // xiph\n\n\n if (parsed.lacing === 1) {\n for (var _i = 0; _i < numberOfFrames - 1; _i++) {\n var size = 0;\n\n do {\n size += data[offset];\n offset++;\n } while (data[offset - 1] === 0xFF);\n\n frameSizes.push(size);\n }\n } // ebml\n\n\n if (parsed.lacing === 3) {\n // first vint is unsinged\n // after that vints are singed and\n // based on a compounding size\n var _size = 0;\n\n for (var _i2 = 0; _i2 < numberOfFrames - 1; _i2++) {\n var vint = _i2 === 0 ? getvint(data, offset) : getvint(data, offset, true, true);\n _size += vint.value;\n frameSizes.push(_size);\n offset += vint.length;\n }\n }\n\n frameSizes.forEach(function (size) {\n parsed.frames.push(data.subarray(offset, offset + size));\n offset += size;\n });\n return parsed;\n}; // VP9 Codec Feature Metadata (CodecPrivate)\n// https://www.webmproject.org/docs/container/\n\nvar parseVp9Private = function parseVp9Private(bytes) {\n var i = 0;\n var params = {};\n\n while (i < bytes.length) {\n var id = bytes[i] & 0x7f;\n var len = bytes[i + 1];\n var val = void 0;\n\n if (len === 1) {\n val = bytes[i + 2];\n } else {\n val = bytes.subarray(i + 2, i + 2 + len);\n }\n\n if (id === 1) {\n params.profile = val;\n } else if (id === 2) {\n params.level = val;\n } else if (id === 3) {\n params.bitDepth = val;\n } else if (id === 4) {\n params.chromaSubsampling = val;\n } else {\n params[id] = val;\n }\n\n i += 2 + len;\n }\n\n return params;\n};\n\nexport var parseTracks = function parseTracks(bytes) {\n bytes = toUint8(bytes);\n var decodedTracks = [];\n var tracks = findEbml(bytes, [EBML_TAGS.Segment, EBML_TAGS.Tracks, EBML_TAGS.Track]);\n\n if (!tracks.length) {\n tracks = findEbml(bytes, [EBML_TAGS.Tracks, EBML_TAGS.Track]);\n }\n\n if (!tracks.length) {\n tracks = findEbml(bytes, [EBML_TAGS.Track]);\n }\n\n if (!tracks.length) {\n return decodedTracks;\n }\n\n tracks.forEach(function (track) {\n var trackType = findEbml(track, EBML_TAGS.TrackType)[0];\n\n if (!trackType || !trackType.length) {\n return;\n } // 1 is video, 2 is audio, 17 is subtitle\n // other values are unimportant in this context\n\n\n if (trackType[0] === 1) {\n trackType = 'video';\n } else if (trackType[0] === 2) {\n trackType = 'audio';\n } else if (trackType[0] === 17) {\n trackType = 'subtitle';\n } else {\n return;\n } // todo parse language\n\n\n var decodedTrack = {\n rawCodec: bytesToString(findEbml(track, [EBML_TAGS.CodecID])[0]),\n type: trackType,\n codecPrivate: findEbml(track, [EBML_TAGS.CodecPrivate])[0],\n number: bytesToNumber(findEbml(track, [EBML_TAGS.TrackNumber])[0]),\n defaultDuration: bytesToNumber(findEbml(track, [EBML_TAGS.DefaultDuration])[0]),\n default: findEbml(track, [EBML_TAGS.FlagDefault])[0],\n rawData: track\n };\n var codec = '';\n\n if (/V_MPEG4\\/ISO\\/AVC/.test(decodedTrack.rawCodec)) {\n codec = \"avc1.\" + getAvcCodec(decodedTrack.codecPrivate);\n } else if (/V_MPEGH\\/ISO\\/HEVC/.test(decodedTrack.rawCodec)) {\n codec = \"hev1.\" + getHvcCodec(decodedTrack.codecPrivate);\n } else if (/V_MPEG4\\/ISO\\/ASP/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n codec = 'mp4v.20.' + decodedTrack.codecPrivate[4].toString();\n } else {\n codec = 'mp4v.20.9';\n }\n } else if (/^V_THEORA/.test(decodedTrack.rawCodec)) {\n codec = 'theora';\n } else if (/^V_VP8/.test(decodedTrack.rawCodec)) {\n codec = 'vp8';\n } else if (/^V_VP9/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n var _parseVp9Private = parseVp9Private(decodedTrack.codecPrivate),\n profile = _parseVp9Private.profile,\n level = _parseVp9Private.level,\n bitDepth = _parseVp9Private.bitDepth,\n chromaSubsampling = _parseVp9Private.chromaSubsampling;\n\n codec = 'vp09.';\n codec += padStart(profile, 2, '0') + \".\";\n codec += padStart(level, 2, '0') + \".\";\n codec += padStart(bitDepth, 2, '0') + \".\";\n codec += \"\" + padStart(chromaSubsampling, 2, '0'); // Video -> Colour -> Ebml name\n\n var matrixCoefficients = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB1]])[0] || [];\n var videoFullRangeFlag = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB9]])[0] || [];\n var transferCharacteristics = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBA]])[0] || [];\n var colourPrimaries = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBB]])[0] || []; // if we find any optional codec parameter specify them all.\n\n if (matrixCoefficients.length || videoFullRangeFlag.length || transferCharacteristics.length || colourPrimaries.length) {\n codec += \".\" + padStart(colourPrimaries[0], 2, '0');\n codec += \".\" + padStart(transferCharacteristics[0], 2, '0');\n codec += \".\" + padStart(matrixCoefficients[0], 2, '0');\n codec += \".\" + padStart(videoFullRangeFlag[0], 2, '0');\n }\n } else {\n codec = 'vp9';\n }\n } else if (/^V_AV1/.test(decodedTrack.rawCodec)) {\n codec = \"av01.\" + getAv1Codec(decodedTrack.codecPrivate);\n } else if (/A_ALAC/.test(decodedTrack.rawCodec)) {\n codec = 'alac';\n } else if (/A_MPEG\\/L2/.test(decodedTrack.rawCodec)) {\n codec = 'mp2';\n } else if (/A_MPEG\\/L3/.test(decodedTrack.rawCodec)) {\n codec = 'mp3';\n } else if (/^A_AAC/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n codec = 'mp4a.40.' + (decodedTrack.codecPrivate[0] >>> 3).toString();\n } else {\n codec = 'mp4a.40.2';\n }\n } else if (/^A_AC3/.test(decodedTrack.rawCodec)) {\n codec = 'ac-3';\n } else if (/^A_PCM/.test(decodedTrack.rawCodec)) {\n codec = 'pcm';\n } else if (/^A_MS\\/ACM/.test(decodedTrack.rawCodec)) {\n codec = 'speex';\n } else if (/^A_EAC3/.test(decodedTrack.rawCodec)) {\n codec = 'ec-3';\n } else if (/^A_VORBIS/.test(decodedTrack.rawCodec)) {\n codec = 'vorbis';\n } else if (/^A_FLAC/.test(decodedTrack.rawCodec)) {\n codec = 'flac';\n } else if (/^A_OPUS/.test(decodedTrack.rawCodec)) {\n codec = 'opus';\n }\n\n decodedTrack.codec = codec;\n decodedTracks.push(decodedTrack);\n });\n return decodedTracks.sort(function (a, b) {\n return a.number - b.number;\n });\n};\nexport var parseData = function parseData(data, tracks) {\n var allBlocks = [];\n var segment = findEbml(data, [EBML_TAGS.Segment])[0];\n var timestampScale = findEbml(segment, [EBML_TAGS.SegmentInfo, EBML_TAGS.TimestampScale])[0]; // in nanoseconds, defaults to 1ms\n\n if (timestampScale && timestampScale.length) {\n timestampScale = bytesToNumber(timestampScale);\n } else {\n timestampScale = 1000000;\n }\n\n var clusters = findEbml(segment, [EBML_TAGS.Cluster]);\n\n if (!tracks) {\n tracks = parseTracks(segment);\n }\n\n clusters.forEach(function (cluster, ci) {\n var simpleBlocks = findEbml(cluster, [EBML_TAGS.SimpleBlock]).map(function (b) {\n return {\n type: 'simple',\n data: b\n };\n });\n var blockGroups = findEbml(cluster, [EBML_TAGS.BlockGroup]).map(function (b) {\n return {\n type: 'group',\n data: b\n };\n });\n var timestamp = findEbml(cluster, [EBML_TAGS.Timestamp])[0] || 0;\n\n if (timestamp && timestamp.length) {\n timestamp = bytesToNumber(timestamp);\n } // get all blocks then sort them into the correct order\n\n\n var blocks = simpleBlocks.concat(blockGroups).sort(function (a, b) {\n return a.data.byteOffset - b.data.byteOffset;\n });\n blocks.forEach(function (block, bi) {\n var decoded = decodeBlock(block.data, block.type, timestampScale, timestamp);\n allBlocks.push(decoded);\n });\n });\n return {\n tracks: tracks,\n blocks: allBlocks\n };\n};","import { bytesMatch, toUint8 } from './byte-helpers.js';\nexport var NAL_TYPE_ONE = toUint8([0x00, 0x00, 0x00, 0x01]);\nexport var NAL_TYPE_TWO = toUint8([0x00, 0x00, 0x01]);\nexport var EMULATION_PREVENTION = toUint8([0x00, 0x00, 0x03]);\n/**\n * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n * Sequence Payload\"\n *\n * @param data {Uint8Array} the bytes of a RBSP from a NAL\n * unit\n * @return {Uint8Array} the RBSP without any Emulation\n * Prevention Bytes\n */\n\nexport var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) {\n var positions = [];\n var i = 1; // Find all `Emulation Prevention Bytes`\n\n while (i < bytes.length - 2) {\n if (bytesMatch(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) {\n positions.push(i + 2);\n i++;\n }\n\n i++;\n } // If no Emulation Prevention Bytes were found just return the original\n // array\n\n\n if (positions.length === 0) {\n return bytes;\n } // Create a new array to hold the NAL unit data\n\n\n var newLength = bytes.length - positions.length;\n var newData = new Uint8Array(newLength);\n var sourceIndex = 0;\n\n for (i = 0; i < newLength; sourceIndex++, i++) {\n if (sourceIndex === positions[0]) {\n // Skip this byte\n sourceIndex++; // Remove this position index\n\n positions.shift();\n }\n\n newData[i] = bytes[sourceIndex];\n }\n\n return newData;\n};\nexport var findNal = function findNal(bytes, dataType, types, nalLimit) {\n if (nalLimit === void 0) {\n nalLimit = Infinity;\n }\n\n bytes = toUint8(bytes);\n types = [].concat(types);\n var i = 0;\n var nalStart;\n var nalsFound = 0; // keep searching until:\n // we reach the end of bytes\n // we reach the maximum number of nals they want to seach\n // NOTE: that we disregard nalLimit when we have found the start\n // of the nal we want so that we can find the end of the nal we want.\n\n while (i < bytes.length && (nalsFound < nalLimit || nalStart)) {\n var nalOffset = void 0;\n\n if (bytesMatch(bytes.subarray(i), NAL_TYPE_ONE)) {\n nalOffset = 4;\n } else if (bytesMatch(bytes.subarray(i), NAL_TYPE_TWO)) {\n nalOffset = 3;\n } // we are unsynced,\n // find the next nal unit\n\n\n if (!nalOffset) {\n i++;\n continue;\n }\n\n nalsFound++;\n\n if (nalStart) {\n return discardEmulationPreventionBytes(bytes.subarray(nalStart, i));\n }\n\n var nalType = void 0;\n\n if (dataType === 'h264') {\n nalType = bytes[i + nalOffset] & 0x1f;\n } else if (dataType === 'h265') {\n nalType = bytes[i + nalOffset] >> 1 & 0x3f;\n }\n\n if (types.indexOf(nalType) !== -1) {\n nalStart = i + nalOffset;\n } // nal header is 1 length for h264, and 2 for h265\n\n\n i += nalOffset + (dataType === 'h264' ? 1 : 2);\n }\n\n return bytes.subarray(0, 0);\n};\nexport var findH264Nal = function findH264Nal(bytes, type, nalLimit) {\n return findNal(bytes, 'h264', type, nalLimit);\n};\nexport var findH265Nal = function findH265Nal(bytes, type, nalLimit) {\n return findNal(bytes, 'h265', type, nalLimit);\n};","import { toUint8, bytesMatch } from './byte-helpers.js';\nimport { findBox } from './mp4-helpers.js';\nimport { findEbml, EBML_TAGS } from './ebml-helpers.js';\nimport { getId3Offset } from './id3-helpers.js';\nimport { findH264Nal, findH265Nal } from './nal-helpers.js';\nvar CONSTANTS = {\n // \"webm\" string literal in hex\n 'webm': toUint8([0x77, 0x65, 0x62, 0x6d]),\n // \"matroska\" string literal in hex\n 'matroska': toUint8([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]),\n // \"fLaC\" string literal in hex\n 'flac': toUint8([0x66, 0x4c, 0x61, 0x43]),\n // \"OggS\" string literal in hex\n 'ogg': toUint8([0x4f, 0x67, 0x67, 0x53]),\n // ac-3 sync byte, also works for ec-3 as that is simply a codec\n // of ac-3\n 'ac3': toUint8([0x0b, 0x77]),\n // \"RIFF\" string literal in hex used for wav and avi\n 'riff': toUint8([0x52, 0x49, 0x46, 0x46]),\n // \"AVI\" string literal in hex\n 'avi': toUint8([0x41, 0x56, 0x49]),\n // \"WAVE\" string literal in hex\n 'wav': toUint8([0x57, 0x41, 0x56, 0x45]),\n // \"ftyp3g\" string literal in hex\n '3gp': toUint8([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]),\n // \"ftyp\" string literal in hex\n 'mp4': toUint8([0x66, 0x74, 0x79, 0x70]),\n // \"styp\" string literal in hex\n 'fmp4': toUint8([0x73, 0x74, 0x79, 0x70]),\n // \"ftypqt\" string literal in hex\n 'mov': toUint8([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]),\n // moov string literal in hex\n 'moov': toUint8([0x6D, 0x6F, 0x6F, 0x76]),\n // moof string literal in hex\n 'moof': toUint8([0x6D, 0x6F, 0x6F, 0x66])\n};\nvar _isLikely = {\n aac: function aac(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, [0xFF, 0x10], {\n offset: offset,\n mask: [0xFF, 0x16]\n });\n },\n mp3: function mp3(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, [0xFF, 0x02], {\n offset: offset,\n mask: [0xFF, 0x06]\n });\n },\n webm: function webm(bytes) {\n var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm\n\n return bytesMatch(docType, CONSTANTS.webm);\n },\n mkv: function mkv(bytes) {\n var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska\n\n return bytesMatch(docType, CONSTANTS.matroska);\n },\n mp4: function mp4(bytes) {\n // if this file is another base media file format, it is not mp4\n if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) {\n return false;\n } // if this file starts with a ftyp or styp box its mp4\n\n\n if (bytesMatch(bytes, CONSTANTS.mp4, {\n offset: 4\n }) || bytesMatch(bytes, CONSTANTS.fmp4, {\n offset: 4\n })) {\n return true;\n } // if this file starts with a moof/moov box its mp4\n\n\n if (bytesMatch(bytes, CONSTANTS.moof, {\n offset: 4\n }) || bytesMatch(bytes, CONSTANTS.moov, {\n offset: 4\n })) {\n return true;\n }\n },\n mov: function mov(bytes) {\n return bytesMatch(bytes, CONSTANTS.mov, {\n offset: 4\n });\n },\n '3gp': function gp(bytes) {\n return bytesMatch(bytes, CONSTANTS['3gp'], {\n offset: 4\n });\n },\n ac3: function ac3(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, CONSTANTS.ac3, {\n offset: offset\n });\n },\n ts: function ts(bytes) {\n if (bytes.length < 189 && bytes.length >= 1) {\n return bytes[0] === 0x47;\n }\n\n var i = 0; // check the first 376 bytes for two matching sync bytes\n\n while (i + 188 < bytes.length && i < 188) {\n if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) {\n return true;\n }\n\n i += 1;\n }\n\n return false;\n },\n flac: function flac(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, CONSTANTS.flac, {\n offset: offset\n });\n },\n ogg: function ogg(bytes) {\n return bytesMatch(bytes, CONSTANTS.ogg);\n },\n avi: function avi(bytes) {\n return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.avi, {\n offset: 8\n });\n },\n wav: function wav(bytes) {\n return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.wav, {\n offset: 8\n });\n },\n 'h264': function h264(bytes) {\n // find seq_parameter_set_rbsp\n return findH264Nal(bytes, 7, 3).length;\n },\n 'h265': function h265(bytes) {\n // find video_parameter_set_rbsp or seq_parameter_set_rbsp\n return findH265Nal(bytes, [32, 33], 3).length;\n }\n}; // get all the isLikely functions\n// but make sure 'ts' is above h264 and h265\n// but below everything else as it is the least specific\n\nvar isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265\n.filter(function (t) {\n return t !== 'ts' && t !== 'h264' && t !== 'h265';\n}) // add it back to the bottom\n.concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data.\n\nisLikelyTypes.forEach(function (type) {\n var isLikelyFn = _isLikely[type];\n\n _isLikely[type] = function (bytes) {\n return isLikelyFn(toUint8(bytes));\n };\n}); // export after wrapping\n\nexport var isLikely = _isLikely; // A useful list of file signatures can be found here\n// https://en.wikipedia.org/wiki/List_of_file_signatures\n\nexport var detectContainerForBytes = function detectContainerForBytes(bytes) {\n bytes = toUint8(bytes);\n\n for (var i = 0; i < isLikelyTypes.length; i++) {\n var type = isLikelyTypes[i];\n\n if (isLikely[type](bytes)) {\n return type;\n }\n }\n\n return '';\n}; // fmp4 is not a container\n\nexport var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) {\n return findBox(bytes, ['moof']).length > 0;\n};","/**\n * @license\n * Video.js 7.21.4 \n *\n * Includes vtt.js \n * Available under Apache License Version 2.0\n * \n */\n\nimport window$1 from 'global/window';\nimport document from 'global/document';\nimport _extends from '@babel/runtime/helpers/extends';\nimport keycode from 'keycode';\nimport _assertThisInitialized from '@babel/runtime/helpers/assertThisInitialized';\nimport _inheritsLoose from '@babel/runtime/helpers/inheritsLoose';\nimport safeParseTuple from 'safe-json-parse/tuple';\nimport XHR from '@videojs/xhr';\nimport vtt from 'videojs-vtt.js';\nimport _construct from '@babel/runtime/helpers/construct';\nimport _inherits from '@babel/runtime/helpers/inherits';\nimport _resolveUrl from '@videojs/vhs-utils/es/resolve-url.js';\nimport { Parser } from 'm3u8-parser';\nimport { browserSupportsCodec, DEFAULT_VIDEO_CODEC, DEFAULT_AUDIO_CODEC, muxerSupportsCodec, parseCodecs, translateLegacyCodec, codecsFromDefault, getMimeForCodec, isAudioCodec } from '@videojs/vhs-utils/es/codecs.js';\nimport { simpleTypeFromSourceType } from '@videojs/vhs-utils/es/media-types.js';\nimport { isArrayBufferView, concatTypedArrays, stringToBytes, toUint8 } from '@videojs/vhs-utils/es/byte-helpers';\nimport { generateSidxKey, parseUTCTiming, parse, addSidxSegmentsToPlaylist } from 'mpd-parser';\nimport parseSidx from 'mux.js/lib/tools/parse-sidx';\nimport { getId3Offset } from '@videojs/vhs-utils/es/id3-helpers';\nimport { detectContainerForBytes, isLikelyFmp4MediaSegment } from '@videojs/vhs-utils/es/containers';\nimport { ONE_SECOND_IN_TS } from 'mux.js/lib/utils/clock';\nimport _wrapNativeSuper from '@babel/runtime/helpers/wrapNativeSuper';\n\nvar version$5 = \"7.21.4\";\n\n/**\n * An Object that contains lifecycle hooks as keys which point to an array\n * of functions that are run when a lifecycle is triggered\n *\n * @private\n */\nvar hooks_ = {};\n/**\n * Get a list of hooks for a specific lifecycle\n *\n * @param {string} type\n * the lifecyle to get hooks from\n *\n * @param {Function|Function[]} [fn]\n * Optionally add a hook (or hooks) to the lifecycle that your are getting.\n *\n * @return {Array}\n * an array of hooks, or an empty array if there are none.\n */\n\nvar hooks = function hooks(type, fn) {\n hooks_[type] = hooks_[type] || [];\n\n if (fn) {\n hooks_[type] = hooks_[type].concat(fn);\n }\n\n return hooks_[type];\n};\n/**\n * Add a function hook to a specific videojs lifecycle.\n *\n * @param {string} type\n * the lifecycle to hook the function to.\n *\n * @param {Function|Function[]}\n * The function or array of functions to attach.\n */\n\n\nvar hook = function hook(type, fn) {\n hooks(type, fn);\n};\n/**\n * Remove a hook from a specific videojs lifecycle.\n *\n * @param {string} type\n * the lifecycle that the function hooked to\n *\n * @param {Function} fn\n * The hooked function to remove\n *\n * @return {boolean}\n * The function that was removed or undef\n */\n\n\nvar removeHook = function removeHook(type, fn) {\n var index = hooks(type).indexOf(fn);\n\n if (index <= -1) {\n return false;\n }\n\n hooks_[type] = hooks_[type].slice();\n hooks_[type].splice(index, 1);\n return true;\n};\n/**\n * Add a function hook that will only run once to a specific videojs lifecycle.\n *\n * @param {string} type\n * the lifecycle to hook the function to.\n *\n * @param {Function|Function[]}\n * The function or array of functions to attach.\n */\n\n\nvar hookOnce = function hookOnce(type, fn) {\n hooks(type, [].concat(fn).map(function (original) {\n var wrapper = function wrapper() {\n removeHook(type, wrapper);\n return original.apply(void 0, arguments);\n };\n\n return wrapper;\n }));\n};\n\n/**\n * @file fullscreen-api.js\n * @module fullscreen-api\n * @private\n */\n/**\n * Store the browser-specific methods for the fullscreen API.\n *\n * @type {Object}\n * @see [Specification]{@link https://fullscreen.spec.whatwg.org}\n * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}\n */\n\nvar FullscreenApi = {\n prefixed: true\n}; // browser API methods\n\nvar apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'], // WebKit\n['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen'], // Mozilla\n['mozRequestFullScreen', 'mozCancelFullScreen', 'mozFullScreenElement', 'mozFullScreenEnabled', 'mozfullscreenchange', 'mozfullscreenerror', '-moz-full-screen'], // Microsoft\n['msRequestFullscreen', 'msExitFullscreen', 'msFullscreenElement', 'msFullscreenEnabled', 'MSFullscreenChange', 'MSFullscreenError', '-ms-fullscreen']];\nvar specApi = apiMap[0];\nvar browserApi; // determine the supported set of functions\n\nfor (var i = 0; i < apiMap.length; i++) {\n // check for exitFullscreen function\n if (apiMap[i][1] in document) {\n browserApi = apiMap[i];\n break;\n }\n} // map the browser API names to the spec API names\n\n\nif (browserApi) {\n for (var _i = 0; _i < browserApi.length; _i++) {\n FullscreenApi[specApi[_i]] = browserApi[_i];\n }\n\n FullscreenApi.prefixed = browserApi[0] !== specApi[0];\n}\n\n/**\n * @file create-logger.js\n * @module create-logger\n */\n\nvar history = [];\n/**\n * Log messages to the console and history based on the type of message\n *\n * @private\n * @param {string} type\n * The name of the console method to use.\n *\n * @param {Array} args\n * The arguments to be passed to the matching console method.\n */\n\nvar LogByTypeFactory = function LogByTypeFactory(name, log) {\n return function (type, level, args) {\n var lvl = log.levels[level];\n var lvlRegExp = new RegExp(\"^(\" + lvl + \")$\");\n\n if (type !== 'log') {\n // Add the type to the front of the message when it's not \"log\".\n args.unshift(type.toUpperCase() + ':');\n } // Add console prefix after adding to history.\n\n\n args.unshift(name + ':'); // Add a clone of the args at this point to history.\n\n if (history) {\n history.push([].concat(args)); // only store 1000 history entries\n\n var splice = history.length - 1000;\n history.splice(0, splice > 0 ? splice : 0);\n } // If there's no console then don't try to output messages, but they will\n // still be stored in history.\n\n\n if (!window$1.console) {\n return;\n } // Was setting these once outside of this function, but containing them\n // in the function makes it easier to test cases where console doesn't exist\n // when the module is executed.\n\n\n var fn = window$1.console[type];\n\n if (!fn && type === 'debug') {\n // Certain browsers don't have support for console.debug. For those, we\n // should default to the closest comparable log.\n fn = window$1.console.info || window$1.console.log;\n } // Bail out if there's no console or if this type is not allowed by the\n // current logging level.\n\n\n if (!fn || !lvl || !lvlRegExp.test(type)) {\n return;\n }\n\n fn[Array.isArray(args) ? 'apply' : 'call'](window$1.console, args);\n };\n};\n\nfunction createLogger$1(name) {\n // This is the private tracking variable for logging level.\n var level = 'info'; // the curried logByType bound to the specific log and history\n\n var logByType;\n /**\n * Logs plain debug messages. Similar to `console.log`.\n *\n * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n * of our JSDoc template, we cannot properly document this as both a function\n * and a namespace, so its function signature is documented here.\n *\n * #### Arguments\n * ##### *args\n * Mixed[]\n *\n * Any combination of values that could be passed to `console.log()`.\n *\n * #### Return Value\n *\n * `undefined`\n *\n * @namespace\n * @param {Mixed[]} args\n * One or more messages or objects that should be logged.\n */\n\n var log = function log() {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n logByType('log', level, args);\n }; // This is the logByType helper that the logging methods below use\n\n\n logByType = LogByTypeFactory(name, log);\n /**\n * Create a new sublogger which chains the old name to the new name.\n *\n * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following:\n * ```js\n * mylogger('foo');\n * // > VIDEOJS: player: foo\n * ```\n *\n * @param {string} name\n * The name to add call the new logger\n * @return {Object}\n */\n\n log.createLogger = function (subname) {\n return createLogger$1(name + ': ' + subname);\n };\n /**\n * Enumeration of available logging levels, where the keys are the level names\n * and the values are `|`-separated strings containing logging methods allowed\n * in that logging level. These strings are used to create a regular expression\n * matching the function name being called.\n *\n * Levels provided by Video.js are:\n *\n * - `off`: Matches no calls. Any value that can be cast to `false` will have\n * this effect. The most restrictive.\n * - `all`: Matches only Video.js-provided functions (`debug`, `log`,\n * `log.warn`, and `log.error`).\n * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls.\n * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls.\n * - `warn`: Matches `log.warn` and `log.error` calls.\n * - `error`: Matches only `log.error` calls.\n *\n * @type {Object}\n */\n\n\n log.levels = {\n all: 'debug|log|warn|error',\n off: '',\n debug: 'debug|log|warn|error',\n info: 'log|warn|error',\n warn: 'warn|error',\n error: 'error',\n DEFAULT: level\n };\n /**\n * Get or set the current logging level.\n *\n * If a string matching a key from {@link module:log.levels} is provided, acts\n * as a setter.\n *\n * @param {string} [lvl]\n * Pass a valid level to set a new logging level.\n *\n * @return {string}\n * The current logging level.\n */\n\n log.level = function (lvl) {\n if (typeof lvl === 'string') {\n if (!log.levels.hasOwnProperty(lvl)) {\n throw new Error(\"\\\"\" + lvl + \"\\\" in not a valid log level\");\n }\n\n level = lvl;\n }\n\n return level;\n };\n /**\n * Returns an array containing everything that has been logged to the history.\n *\n * This array is a shallow clone of the internal history record. However, its\n * contents are _not_ cloned; so, mutating objects inside this array will\n * mutate them in history.\n *\n * @return {Array}\n */\n\n\n log.history = function () {\n return history ? [].concat(history) : [];\n };\n /**\n * Allows you to filter the history by the given logger name\n *\n * @param {string} fname\n * The name to filter by\n *\n * @return {Array}\n * The filtered list to return\n */\n\n\n log.history.filter = function (fname) {\n return (history || []).filter(function (historyItem) {\n // if the first item in each historyItem includes `fname`, then it's a match\n return new RegExp(\".*\" + fname + \".*\").test(historyItem[0]);\n });\n };\n /**\n * Clears the internal history tracking, but does not prevent further history\n * tracking.\n */\n\n\n log.history.clear = function () {\n if (history) {\n history.length = 0;\n }\n };\n /**\n * Disable history tracking if it is currently enabled.\n */\n\n\n log.history.disable = function () {\n if (history !== null) {\n history.length = 0;\n history = null;\n }\n };\n /**\n * Enable history tracking if it is currently disabled.\n */\n\n\n log.history.enable = function () {\n if (history === null) {\n history = [];\n }\n };\n /**\n * Logs error messages. Similar to `console.error`.\n *\n * @param {Mixed[]} args\n * One or more messages or objects that should be logged as an error\n */\n\n\n log.error = function () {\n for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n args[_key2] = arguments[_key2];\n }\n\n return logByType('error', level, args);\n };\n /**\n * Logs warning messages. Similar to `console.warn`.\n *\n * @param {Mixed[]} args\n * One or more messages or objects that should be logged as a warning.\n */\n\n\n log.warn = function () {\n for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n args[_key3] = arguments[_key3];\n }\n\n return logByType('warn', level, args);\n };\n /**\n * Logs debug messages. Similar to `console.debug`, but may also act as a comparable\n * log if `console.debug` is not available\n *\n * @param {Mixed[]} args\n * One or more messages or objects that should be logged as debug.\n */\n\n\n log.debug = function () {\n for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {\n args[_key4] = arguments[_key4];\n }\n\n return logByType('debug', level, args);\n };\n\n return log;\n}\n\n/**\n * @file log.js\n * @module log\n */\nvar log$1 = createLogger$1('VIDEOJS');\nvar createLogger = log$1.createLogger;\n\n/**\n * @file obj.js\n * @module obj\n */\n\n/**\n * @callback obj:EachCallback\n *\n * @param {Mixed} value\n * The current key for the object that is being iterated over.\n *\n * @param {string} key\n * The current key-value for object that is being iterated over\n */\n\n/**\n * @callback obj:ReduceCallback\n *\n * @param {Mixed} accum\n * The value that is accumulating over the reduce loop.\n *\n * @param {Mixed} value\n * The current key for the object that is being iterated over.\n *\n * @param {string} key\n * The current key-value for object that is being iterated over\n *\n * @return {Mixed}\n * The new accumulated value.\n */\nvar toString = Object.prototype.toString;\n/**\n * Get the keys of an Object\n *\n * @param {Object}\n * The Object to get the keys from\n *\n * @return {string[]}\n * An array of the keys from the object. Returns an empty array if the\n * object passed in was invalid or had no keys.\n *\n * @private\n */\n\nvar keys = function keys(object) {\n return isObject(object) ? Object.keys(object) : [];\n};\n/**\n * Array-like iteration for objects.\n *\n * @param {Object} object\n * The object to iterate over\n *\n * @param {obj:EachCallback} fn\n * The callback function which is called for each key in the object.\n */\n\n\nfunction each(object, fn) {\n keys(object).forEach(function (key) {\n return fn(object[key], key);\n });\n}\n/**\n * Array-like reduce for objects.\n *\n * @param {Object} object\n * The Object that you want to reduce.\n *\n * @param {Function} fn\n * A callback function which is called for each key in the object. It\n * receives the accumulated value and the per-iteration value and key\n * as arguments.\n *\n * @param {Mixed} [initial = 0]\n * Starting value\n *\n * @return {Mixed}\n * The final accumulated value.\n */\n\nfunction reduce(object, fn, initial) {\n if (initial === void 0) {\n initial = 0;\n }\n\n return keys(object).reduce(function (accum, key) {\n return fn(accum, object[key], key);\n }, initial);\n}\n/**\n * Object.assign-style object shallow merge/extend.\n *\n * @param {Object} target\n * @param {Object} ...sources\n * @return {Object}\n */\n\nfunction assign(target) {\n for (var _len = arguments.length, sources = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n sources[_key - 1] = arguments[_key];\n }\n\n if (Object.assign) {\n return _extends.apply(void 0, [target].concat(sources));\n }\n\n sources.forEach(function (source) {\n if (!source) {\n return;\n }\n\n each(source, function (value, key) {\n target[key] = value;\n });\n });\n return target;\n}\n/**\n * Returns whether a value is an object of any kind - including DOM nodes,\n * arrays, regular expressions, etc. Not functions, though.\n *\n * This avoids the gotcha where using `typeof` on a `null` value\n * results in `'object'`.\n *\n * @param {Object} value\n * @return {boolean}\n */\n\nfunction isObject(value) {\n return !!value && typeof value === 'object';\n}\n/**\n * Returns whether an object appears to be a \"plain\" object - that is, a\n * direct instance of `Object`.\n *\n * @param {Object} value\n * @return {boolean}\n */\n\nfunction isPlain(value) {\n return isObject(value) && toString.call(value) === '[object Object]' && value.constructor === Object;\n}\n\n/**\n * @file computed-style.js\n * @module computed-style\n */\n/**\n * A safe getComputedStyle.\n *\n * This is needed because in Firefox, if the player is loaded in an iframe with\n * `display:none`, then `getComputedStyle` returns `null`, so, we do a\n * null-check to make sure that the player doesn't break in these cases.\n *\n * @function\n * @param {Element} el\n * The element you want the computed style of\n *\n * @param {string} prop\n * The property name you want\n *\n * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n */\n\nfunction computedStyle(el, prop) {\n if (!el || !prop) {\n return '';\n }\n\n if (typeof window$1.getComputedStyle === 'function') {\n var computedStyleValue;\n\n try {\n computedStyleValue = window$1.getComputedStyle(el);\n } catch (e) {\n return '';\n }\n\n return computedStyleValue ? computedStyleValue.getPropertyValue(prop) || computedStyleValue[prop] : '';\n }\n\n return '';\n}\n\n/**\n * @file browser.js\n * @module browser\n */\nvar USER_AGENT = window$1.navigator && window$1.navigator.userAgent || '';\nvar webkitVersionMap = /AppleWebKit\\/([\\d.]+)/i.exec(USER_AGENT);\nvar appleWebkitVersion = webkitVersionMap ? parseFloat(webkitVersionMap.pop()) : null;\n/**\n * Whether or not this device is an iPod.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_IPOD = /iPod/i.test(USER_AGENT);\n/**\n * The detected iOS version - or `null`.\n *\n * @static\n * @const\n * @type {string|null}\n */\n\nvar IOS_VERSION = function () {\n var match = USER_AGENT.match(/OS (\\d+)_/i);\n\n if (match && match[1]) {\n return match[1];\n }\n\n return null;\n}();\n/**\n * Whether or not this is an Android device.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_ANDROID = /Android/i.test(USER_AGENT);\n/**\n * The detected Android version - or `null`.\n *\n * @static\n * @const\n * @type {number|string|null}\n */\n\nvar ANDROID_VERSION = function () {\n // This matches Android Major.Minor.Patch versions\n // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned\n var match = USER_AGENT.match(/Android (\\d+)(?:\\.(\\d+))?(?:\\.(\\d+))*/i);\n\n if (!match) {\n return null;\n }\n\n var major = match[1] && parseFloat(match[1]);\n var minor = match[2] && parseFloat(match[2]);\n\n if (major && minor) {\n return parseFloat(match[1] + '.' + match[2]);\n } else if (major) {\n return major;\n }\n\n return null;\n}();\n/**\n * Whether or not this is a native Android browser.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_NATIVE_ANDROID = IS_ANDROID && ANDROID_VERSION < 5 && appleWebkitVersion < 537;\n/**\n * Whether or not this is Mozilla Firefox.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_FIREFOX = /Firefox/i.test(USER_AGENT);\n/**\n * Whether or not this is Microsoft Edge.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_EDGE = /Edg/i.test(USER_AGENT);\n/**\n * Whether or not this is Google Chrome.\n *\n * This will also be `true` for Chrome on iOS, which will have different support\n * as it is actually Safari under the hood.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_CHROME = !IS_EDGE && (/Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT));\n/**\n * The detected Google Chrome version - or `null`.\n *\n * @static\n * @const\n * @type {number|null}\n */\n\nvar CHROME_VERSION = function () {\n var match = USER_AGENT.match(/(Chrome|CriOS)\\/(\\d+)/);\n\n if (match && match[2]) {\n return parseFloat(match[2]);\n }\n\n return null;\n}();\n/**\n * The detected Internet Explorer version - or `null`.\n *\n * @static\n * @const\n * @type {number|null}\n */\n\nvar IE_VERSION = function () {\n var result = /MSIE\\s(\\d+)\\.\\d/.exec(USER_AGENT);\n var version = result && parseFloat(result[1]);\n\n if (!version && /Trident\\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {\n // IE 11 has a different user agent string than other IE versions\n version = 11.0;\n }\n\n return version;\n}();\n/**\n * Whether or not this is desktop Safari.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE;\n/**\n * Whether or not this is a Windows machine.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_WINDOWS = /Windows/i.test(USER_AGENT);\n/**\n * Whether or not this device is touch-enabled.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar TOUCH_ENABLED = Boolean(isReal() && ('ontouchstart' in window$1 || window$1.navigator.maxTouchPoints || window$1.DocumentTouch && window$1.document instanceof window$1.DocumentTouch));\n/**\n * Whether or not this device is an iPad.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_IPAD = /iPad/i.test(USER_AGENT) || IS_SAFARI && TOUCH_ENABLED && !/iPhone/i.test(USER_AGENT);\n/**\n * Whether or not this device is an iPhone.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n// The Facebook app's UIWebView identifies as both an iPhone and iPad, so\n// to identify iPhones, we need to exclude iPads.\n// http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/\n\nvar IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;\n/**\n * Whether or not this is an iOS device.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;\n/**\n * Whether or not this is any flavor of Safari - including iOS.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME;\n\nvar browser = /*#__PURE__*/Object.freeze({\n __proto__: null,\n IS_IPOD: IS_IPOD,\n IOS_VERSION: IOS_VERSION,\n IS_ANDROID: IS_ANDROID,\n ANDROID_VERSION: ANDROID_VERSION,\n IS_NATIVE_ANDROID: IS_NATIVE_ANDROID,\n IS_FIREFOX: IS_FIREFOX,\n IS_EDGE: IS_EDGE,\n IS_CHROME: IS_CHROME,\n CHROME_VERSION: CHROME_VERSION,\n IE_VERSION: IE_VERSION,\n IS_SAFARI: IS_SAFARI,\n IS_WINDOWS: IS_WINDOWS,\n TOUCH_ENABLED: TOUCH_ENABLED,\n IS_IPAD: IS_IPAD,\n IS_IPHONE: IS_IPHONE,\n IS_IOS: IS_IOS,\n IS_ANY_SAFARI: IS_ANY_SAFARI\n});\n\n/**\n * @file dom.js\n * @module dom\n */\n/**\n * Detect if a value is a string with any non-whitespace characters.\n *\n * @private\n * @param {string} str\n * The string to check\n *\n * @return {boolean}\n * Will be `true` if the string is non-blank, `false` otherwise.\n *\n */\n\nfunction isNonBlankString(str) {\n // we use str.trim as it will trim any whitespace characters\n // from the front or back of non-whitespace characters. aka\n // Any string that contains non-whitespace characters will\n // still contain them after `trim` but whitespace only strings\n // will have a length of 0, failing this check.\n return typeof str === 'string' && Boolean(str.trim());\n}\n/**\n * Throws an error if the passed string has whitespace. This is used by\n * class methods to be relatively consistent with the classList API.\n *\n * @private\n * @param {string} str\n * The string to check for whitespace.\n *\n * @throws {Error}\n * Throws an error if there is whitespace in the string.\n */\n\n\nfunction throwIfWhitespace(str) {\n // str.indexOf instead of regex because str.indexOf is faster performance wise.\n if (str.indexOf(' ') >= 0) {\n throw new Error('class has illegal whitespace characters');\n }\n}\n/**\n * Produce a regular expression for matching a className within an elements className.\n *\n * @private\n * @param {string} className\n * The className to generate the RegExp for.\n *\n * @return {RegExp}\n * The RegExp that will check for a specific `className` in an elements\n * className.\n */\n\n\nfunction classRegExp(className) {\n return new RegExp('(^|\\\\s)' + className + '($|\\\\s)');\n}\n/**\n * Whether the current DOM interface appears to be real (i.e. not simulated).\n *\n * @return {boolean}\n * Will be `true` if the DOM appears to be real, `false` otherwise.\n */\n\n\nfunction isReal() {\n // Both document and window will never be undefined thanks to `global`.\n return document === window$1.document;\n}\n/**\n * Determines, via duck typing, whether or not a value is a DOM element.\n *\n * @param {Mixed} value\n * The value to check.\n *\n * @return {boolean}\n * Will be `true` if the value is a DOM element, `false` otherwise.\n */\n\nfunction isEl(value) {\n return isObject(value) && value.nodeType === 1;\n}\n/**\n * Determines if the current DOM is embedded in an iframe.\n *\n * @return {boolean}\n * Will be `true` if the DOM is embedded in an iframe, `false`\n * otherwise.\n */\n\nfunction isInFrame() {\n // We need a try/catch here because Safari will throw errors when attempting\n // to get either `parent` or `self`\n try {\n return window$1.parent !== window$1.self;\n } catch (x) {\n return true;\n }\n}\n/**\n * Creates functions to query the DOM using a given method.\n *\n * @private\n * @param {string} method\n * The method to create the query with.\n *\n * @return {Function}\n * The query method\n */\n\nfunction createQuerier(method) {\n return function (selector, context) {\n if (!isNonBlankString(selector)) {\n return document[method](null);\n }\n\n if (isNonBlankString(context)) {\n context = document.querySelector(context);\n }\n\n var ctx = isEl(context) ? context : document;\n return ctx[method] && ctx[method](selector);\n };\n}\n/**\n * Creates an element and applies properties, attributes, and inserts content.\n *\n * @param {string} [tagName='div']\n * Name of tag to be created.\n *\n * @param {Object} [properties={}]\n * Element properties to be applied.\n *\n * @param {Object} [attributes={}]\n * Element attributes to be applied.\n *\n * @param {module:dom~ContentDescriptor} content\n * A content descriptor object.\n *\n * @return {Element}\n * The element that was created.\n */\n\n\nfunction createEl(tagName, properties, attributes, content) {\n if (tagName === void 0) {\n tagName = 'div';\n }\n\n if (properties === void 0) {\n properties = {};\n }\n\n if (attributes === void 0) {\n attributes = {};\n }\n\n var el = document.createElement(tagName);\n Object.getOwnPropertyNames(properties).forEach(function (propName) {\n var val = properties[propName]; // See #2176\n // We originally were accepting both properties and attributes in the\n // same object, but that doesn't work so well.\n\n if (propName.indexOf('aria-') !== -1 || propName === 'role' || propName === 'type') {\n log$1.warn('Setting attributes in the second argument of createEl()\\n' + 'has been deprecated. Use the third argument instead.\\n' + (\"createEl(type, properties, attributes). Attempting to set \" + propName + \" to \" + val + \".\"));\n el.setAttribute(propName, val); // Handle textContent since it's not supported everywhere and we have a\n // method for it.\n } else if (propName === 'textContent') {\n textContent(el, val);\n } else if (el[propName] !== val || propName === 'tabIndex') {\n el[propName] = val;\n }\n });\n Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n el.setAttribute(attrName, attributes[attrName]);\n });\n\n if (content) {\n appendContent(el, content);\n }\n\n return el;\n}\n/**\n * Injects text into an element, replacing any existing contents entirely.\n *\n * @param {Element} el\n * The element to add text content into\n *\n * @param {string} text\n * The text content to add.\n *\n * @return {Element}\n * The element with added text content.\n */\n\nfunction textContent(el, text) {\n if (typeof el.textContent === 'undefined') {\n el.innerText = text;\n } else {\n el.textContent = text;\n }\n\n return el;\n}\n/**\n * Insert an element as the first child node of another\n *\n * @param {Element} child\n * Element to insert\n *\n * @param {Element} parent\n * Element to insert child into\n */\n\nfunction prependTo(child, parent) {\n if (parent.firstChild) {\n parent.insertBefore(child, parent.firstChild);\n } else {\n parent.appendChild(child);\n }\n}\n/**\n * Check if an element has a class name.\n *\n * @param {Element} element\n * Element to check\n *\n * @param {string} classToCheck\n * Class name to check for\n *\n * @return {boolean}\n * Will be `true` if the element has a class, `false` otherwise.\n *\n * @throws {Error}\n * Throws an error if `classToCheck` has white space.\n */\n\nfunction hasClass(element, classToCheck) {\n throwIfWhitespace(classToCheck);\n\n if (element.classList) {\n return element.classList.contains(classToCheck);\n }\n\n return classRegExp(classToCheck).test(element.className);\n}\n/**\n * Add a class name to an element.\n *\n * @param {Element} element\n * Element to add class name to.\n *\n * @param {string} classToAdd\n * Class name to add.\n *\n * @return {Element}\n * The DOM element with the added class name.\n */\n\nfunction addClass(element, classToAdd) {\n if (element.classList) {\n element.classList.add(classToAdd); // Don't need to `throwIfWhitespace` here because `hasElClass` will do it\n // in the case of classList not being supported.\n } else if (!hasClass(element, classToAdd)) {\n element.className = (element.className + ' ' + classToAdd).trim();\n }\n\n return element;\n}\n/**\n * Remove a class name from an element.\n *\n * @param {Element} element\n * Element to remove a class name from.\n *\n * @param {string} classToRemove\n * Class name to remove\n *\n * @return {Element}\n * The DOM element with class name removed.\n */\n\nfunction removeClass(element, classToRemove) {\n // Protect in case the player gets disposed\n if (!element) {\n log$1.warn(\"removeClass was called with an element that doesn't exist\");\n return null;\n }\n\n if (element.classList) {\n element.classList.remove(classToRemove);\n } else {\n throwIfWhitespace(classToRemove);\n element.className = element.className.split(/\\s+/).filter(function (c) {\n return c !== classToRemove;\n }).join(' ');\n }\n\n return element;\n}\n/**\n * The callback definition for toggleClass.\n *\n * @callback module:dom~PredicateCallback\n * @param {Element} element\n * The DOM element of the Component.\n *\n * @param {string} classToToggle\n * The `className` that wants to be toggled\n *\n * @return {boolean|undefined}\n * If `true` is returned, the `classToToggle` will be added to the\n * `element`. If `false`, the `classToToggle` will be removed from\n * the `element`. If `undefined`, the callback will be ignored.\n */\n\n/**\n * Adds or removes a class name to/from an element depending on an optional\n * condition or the presence/absence of the class name.\n *\n * @param {Element} element\n * The element to toggle a class name on.\n *\n * @param {string} classToToggle\n * The class that should be toggled.\n *\n * @param {boolean|module:dom~PredicateCallback} [predicate]\n * See the return value for {@link module:dom~PredicateCallback}\n *\n * @return {Element}\n * The element with a class that has been toggled.\n */\n\nfunction toggleClass(element, classToToggle, predicate) {\n // This CANNOT use `classList` internally because IE11 does not support the\n // second parameter to the `classList.toggle()` method! Which is fine because\n // `classList` will be used by the add/remove functions.\n var has = hasClass(element, classToToggle);\n\n if (typeof predicate === 'function') {\n predicate = predicate(element, classToToggle);\n }\n\n if (typeof predicate !== 'boolean') {\n predicate = !has;\n } // If the necessary class operation matches the current state of the\n // element, no action is required.\n\n\n if (predicate === has) {\n return;\n }\n\n if (predicate) {\n addClass(element, classToToggle);\n } else {\n removeClass(element, classToToggle);\n }\n\n return element;\n}\n/**\n * Apply attributes to an HTML element.\n *\n * @param {Element} el\n * Element to add attributes to.\n *\n * @param {Object} [attributes]\n * Attributes to be applied.\n */\n\nfunction setAttributes(el, attributes) {\n Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n var attrValue = attributes[attrName];\n\n if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {\n el.removeAttribute(attrName);\n } else {\n el.setAttribute(attrName, attrValue === true ? '' : attrValue);\n }\n });\n}\n/**\n * Get an element's attribute values, as defined on the HTML tag.\n *\n * Attributes are not the same as properties. They're defined on the tag\n * or with setAttribute.\n *\n * @param {Element} tag\n * Element from which to get tag attributes.\n *\n * @return {Object}\n * All attributes of the element. Boolean attributes will be `true` or\n * `false`, others will be strings.\n */\n\nfunction getAttributes(tag) {\n var obj = {}; // known boolean attributes\n // we can check for matching boolean properties, but not all browsers\n // and not all tags know about these attributes, so, we still want to check them manually\n\n var knownBooleans = ',' + 'autoplay,controls,playsinline,loop,muted,default,defaultMuted' + ',';\n\n if (tag && tag.attributes && tag.attributes.length > 0) {\n var attrs = tag.attributes;\n\n for (var i = attrs.length - 1; i >= 0; i--) {\n var attrName = attrs[i].name;\n var attrVal = attrs[i].value; // check for known booleans\n // the matching element property will return a value for typeof\n\n if (typeof tag[attrName] === 'boolean' || knownBooleans.indexOf(',' + attrName + ',') !== -1) {\n // the value of an included boolean attribute is typically an empty\n // string ('') which would equal false if we just check for a false value.\n // we also don't want support bad code like autoplay='false'\n attrVal = attrVal !== null ? true : false;\n }\n\n obj[attrName] = attrVal;\n }\n }\n\n return obj;\n}\n/**\n * Get the value of an element's attribute.\n *\n * @param {Element} el\n * A DOM element.\n *\n * @param {string} attribute\n * Attribute to get the value of.\n *\n * @return {string}\n * The value of the attribute.\n */\n\nfunction getAttribute(el, attribute) {\n return el.getAttribute(attribute);\n}\n/**\n * Set the value of an element's attribute.\n *\n * @param {Element} el\n * A DOM element.\n *\n * @param {string} attribute\n * Attribute to set.\n *\n * @param {string} value\n * Value to set the attribute to.\n */\n\nfunction setAttribute(el, attribute, value) {\n el.setAttribute(attribute, value);\n}\n/**\n * Remove an element's attribute.\n *\n * @param {Element} el\n * A DOM element.\n *\n * @param {string} attribute\n * Attribute to remove.\n */\n\nfunction removeAttribute(el, attribute) {\n el.removeAttribute(attribute);\n}\n/**\n * Attempt to block the ability to select text.\n */\n\nfunction blockTextSelection() {\n document.body.focus();\n\n document.onselectstart = function () {\n return false;\n };\n}\n/**\n * Turn off text selection blocking.\n */\n\nfunction unblockTextSelection() {\n document.onselectstart = function () {\n return true;\n };\n}\n/**\n * Identical to the native `getBoundingClientRect` function, but ensures that\n * the method is supported at all (it is in all browsers we claim to support)\n * and that the element is in the DOM before continuing.\n *\n * This wrapper function also shims properties which are not provided by some\n * older browsers (namely, IE8).\n *\n * Additionally, some browsers do not support adding properties to a\n * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard\n * properties (except `x` and `y` which are not widely supported). This helps\n * avoid implementations where keys are non-enumerable.\n *\n * @param {Element} el\n * Element whose `ClientRect` we want to calculate.\n *\n * @return {Object|undefined}\n * Always returns a plain object - or `undefined` if it cannot.\n */\n\nfunction getBoundingClientRect(el) {\n if (el && el.getBoundingClientRect && el.parentNode) {\n var rect = el.getBoundingClientRect();\n var result = {};\n ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(function (k) {\n if (rect[k] !== undefined) {\n result[k] = rect[k];\n }\n });\n\n if (!result.height) {\n result.height = parseFloat(computedStyle(el, 'height'));\n }\n\n if (!result.width) {\n result.width = parseFloat(computedStyle(el, 'width'));\n }\n\n return result;\n }\n}\n/**\n * Represents the position of a DOM element on the page.\n *\n * @typedef {Object} module:dom~Position\n *\n * @property {number} left\n * Pixels to the left.\n *\n * @property {number} top\n * Pixels from the top.\n */\n\n/**\n * Get the position of an element in the DOM.\n *\n * Uses `getBoundingClientRect` technique from John Resig.\n *\n * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/\n *\n * @param {Element} el\n * Element from which to get offset.\n *\n * @return {module:dom~Position}\n * The position of the element that was passed in.\n */\n\nfunction findPosition(el) {\n if (!el || el && !el.offsetParent) {\n return {\n left: 0,\n top: 0,\n width: 0,\n height: 0\n };\n }\n\n var width = el.offsetWidth;\n var height = el.offsetHeight;\n var left = 0;\n var top = 0;\n\n while (el.offsetParent && el !== document[FullscreenApi.fullscreenElement]) {\n left += el.offsetLeft;\n top += el.offsetTop;\n el = el.offsetParent;\n }\n\n return {\n left: left,\n top: top,\n width: width,\n height: height\n };\n}\n/**\n * Represents x and y coordinates for a DOM element or mouse pointer.\n *\n * @typedef {Object} module:dom~Coordinates\n *\n * @property {number} x\n * x coordinate in pixels\n *\n * @property {number} y\n * y coordinate in pixels\n */\n\n/**\n * Get the pointer position within an element.\n *\n * The base on the coordinates are the bottom left of the element.\n *\n * @param {Element} el\n * Element on which to get the pointer position on.\n *\n * @param {EventTarget~Event} event\n * Event object.\n *\n * @return {module:dom~Coordinates}\n * A coordinates object corresponding to the mouse position.\n *\n */\n\nfunction getPointerPosition(el, event) {\n var translated = {\n x: 0,\n y: 0\n };\n\n if (IS_IOS) {\n var item = el;\n\n while (item && item.nodeName.toLowerCase() !== 'html') {\n var transform = computedStyle(item, 'transform');\n\n if (/^matrix/.test(transform)) {\n var values = transform.slice(7, -1).split(/,\\s/).map(Number);\n translated.x += values[4];\n translated.y += values[5];\n } else if (/^matrix3d/.test(transform)) {\n var _values = transform.slice(9, -1).split(/,\\s/).map(Number);\n\n translated.x += _values[12];\n translated.y += _values[13];\n }\n\n item = item.parentNode;\n }\n }\n\n var position = {};\n var boxTarget = findPosition(event.target);\n var box = findPosition(el);\n var boxW = box.width;\n var boxH = box.height;\n var offsetY = event.offsetY - (box.top - boxTarget.top);\n var offsetX = event.offsetX - (box.left - boxTarget.left);\n\n if (event.changedTouches) {\n offsetX = event.changedTouches[0].pageX - box.left;\n offsetY = event.changedTouches[0].pageY + box.top;\n\n if (IS_IOS) {\n offsetX -= translated.x;\n offsetY -= translated.y;\n }\n }\n\n position.y = 1 - Math.max(0, Math.min(1, offsetY / boxH));\n position.x = Math.max(0, Math.min(1, offsetX / boxW));\n return position;\n}\n/**\n * Determines, via duck typing, whether or not a value is a text node.\n *\n * @param {Mixed} value\n * Check if this value is a text node.\n *\n * @return {boolean}\n * Will be `true` if the value is a text node, `false` otherwise.\n */\n\nfunction isTextNode(value) {\n return isObject(value) && value.nodeType === 3;\n}\n/**\n * Empties the contents of an element.\n *\n * @param {Element} el\n * The element to empty children from\n *\n * @return {Element}\n * The element with no children\n */\n\nfunction emptyEl(el) {\n while (el.firstChild) {\n el.removeChild(el.firstChild);\n }\n\n return el;\n}\n/**\n * This is a mixed value that describes content to be injected into the DOM\n * via some method. It can be of the following types:\n *\n * Type | Description\n * -----------|-------------\n * `string` | The value will be normalized into a text node.\n * `Element` | The value will be accepted as-is.\n * `TextNode` | The value will be accepted as-is.\n * `Array` | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored).\n * `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes.\n *\n * @typedef {string|Element|TextNode|Array|Function} module:dom~ContentDescriptor\n */\n\n/**\n * Normalizes content for eventual insertion into the DOM.\n *\n * This allows a wide range of content definition methods, but helps protect\n * from falling into the trap of simply writing to `innerHTML`, which could\n * be an XSS concern.\n *\n * The content for an element can be passed in multiple types and\n * combinations, whose behavior is as follows:\n *\n * @param {module:dom~ContentDescriptor} content\n * A content descriptor value.\n *\n * @return {Array}\n * All of the content that was passed in, normalized to an array of\n * elements or text nodes.\n */\n\nfunction normalizeContent(content) {\n // First, invoke content if it is a function. If it produces an array,\n // that needs to happen before normalization.\n if (typeof content === 'function') {\n content = content();\n } // Next up, normalize to an array, so one or many items can be normalized,\n // filtered, and returned.\n\n\n return (Array.isArray(content) ? content : [content]).map(function (value) {\n // First, invoke value if it is a function to produce a new value,\n // which will be subsequently normalized to a Node of some kind.\n if (typeof value === 'function') {\n value = value();\n }\n\n if (isEl(value) || isTextNode(value)) {\n return value;\n }\n\n if (typeof value === 'string' && /\\S/.test(value)) {\n return document.createTextNode(value);\n }\n }).filter(function (value) {\n return value;\n });\n}\n/**\n * Normalizes and appends content to an element.\n *\n * @param {Element} el\n * Element to append normalized content to.\n *\n * @param {module:dom~ContentDescriptor} content\n * A content descriptor value.\n *\n * @return {Element}\n * The element with appended normalized content.\n */\n\nfunction appendContent(el, content) {\n normalizeContent(content).forEach(function (node) {\n return el.appendChild(node);\n });\n return el;\n}\n/**\n * Normalizes and inserts content into an element; this is identical to\n * `appendContent()`, except it empties the element first.\n *\n * @param {Element} el\n * Element to insert normalized content into.\n *\n * @param {module:dom~ContentDescriptor} content\n * A content descriptor value.\n *\n * @return {Element}\n * The element with inserted normalized content.\n */\n\nfunction insertContent(el, content) {\n return appendContent(emptyEl(el), content);\n}\n/**\n * Check if an event was a single left click.\n *\n * @param {EventTarget~Event} event\n * Event object.\n *\n * @return {boolean}\n * Will be `true` if a single left click, `false` otherwise.\n */\n\nfunction isSingleLeftClick(event) {\n // Note: if you create something draggable, be sure to\n // call it on both `mousedown` and `mousemove` event,\n // otherwise `mousedown` should be enough for a button\n if (event.button === undefined && event.buttons === undefined) {\n // Why do we need `buttons` ?\n // Because, middle mouse sometimes have this:\n // e.button === 0 and e.buttons === 4\n // Furthermore, we want to prevent combination click, something like\n // HOLD middlemouse then left click, that would be\n // e.button === 0, e.buttons === 5\n // just `button` is not gonna work\n // Alright, then what this block does ?\n // this is for chrome `simulate mobile devices`\n // I want to support this as well\n return true;\n }\n\n if (event.button === 0 && event.buttons === undefined) {\n // Touch screen, sometimes on some specific device, `buttons`\n // doesn't have anything (safari on ios, blackberry...)\n return true;\n } // `mouseup` event on a single left click has\n // `button` and `buttons` equal to 0\n\n\n if (event.type === 'mouseup' && event.button === 0 && event.buttons === 0) {\n return true;\n }\n\n if (event.button !== 0 || event.buttons !== 1) {\n // This is the reason we have those if else block above\n // if any special case we can catch and let it slide\n // we do it above, when get to here, this definitely\n // is-not-left-click\n return false;\n }\n\n return true;\n}\n/**\n * Finds a single DOM element matching `selector` within the optional\n * `context` of another DOM element (defaulting to `document`).\n *\n * @param {string} selector\n * A valid CSS selector, which will be passed to `querySelector`.\n *\n * @param {Element|String} [context=document]\n * A DOM element within which to query. Can also be a selector\n * string in which case the first matching element will be used\n * as context. If missing (or no element matches selector), falls\n * back to `document`.\n *\n * @return {Element|null}\n * The element that was found or null.\n */\n\nvar $ = createQuerier('querySelector');\n/**\n * Finds a all DOM elements matching `selector` within the optional\n * `context` of another DOM element (defaulting to `document`).\n *\n * @param {string} selector\n * A valid CSS selector, which will be passed to `querySelectorAll`.\n *\n * @param {Element|String} [context=document]\n * A DOM element within which to query. Can also be a selector\n * string in which case the first matching element will be used\n * as context. If missing (or no element matches selector), falls\n * back to `document`.\n *\n * @return {NodeList}\n * A element list of elements that were found. Will be empty if none\n * were found.\n *\n */\n\nvar $$ = createQuerier('querySelectorAll');\n\nvar Dom = /*#__PURE__*/Object.freeze({\n __proto__: null,\n isReal: isReal,\n isEl: isEl,\n isInFrame: isInFrame,\n createEl: createEl,\n textContent: textContent,\n prependTo: prependTo,\n hasClass: hasClass,\n addClass: addClass,\n removeClass: removeClass,\n toggleClass: toggleClass,\n setAttributes: setAttributes,\n getAttributes: getAttributes,\n getAttribute: getAttribute,\n setAttribute: setAttribute,\n removeAttribute: removeAttribute,\n blockTextSelection: blockTextSelection,\n unblockTextSelection: unblockTextSelection,\n getBoundingClientRect: getBoundingClientRect,\n findPosition: findPosition,\n getPointerPosition: getPointerPosition,\n isTextNode: isTextNode,\n emptyEl: emptyEl,\n normalizeContent: normalizeContent,\n appendContent: appendContent,\n insertContent: insertContent,\n isSingleLeftClick: isSingleLeftClick,\n $: $,\n $$: $$\n});\n\n/**\n * @file setup.js - Functions for setting up a player without\n * user interaction based on the data-setup `attribute` of the video tag.\n *\n * @module setup\n */\nvar _windowLoaded = false;\nvar videojs$1;\n/**\n * Set up any tags that have a data-setup `attribute` when the player is started.\n */\n\nvar autoSetup = function autoSetup() {\n if (videojs$1.options.autoSetup === false) {\n return;\n }\n\n var vids = Array.prototype.slice.call(document.getElementsByTagName('video'));\n var audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));\n var divs = Array.prototype.slice.call(document.getElementsByTagName('video-js'));\n var mediaEls = vids.concat(audios, divs); // Check if any media elements exist\n\n if (mediaEls && mediaEls.length > 0) {\n for (var i = 0, e = mediaEls.length; i < e; i++) {\n var mediaEl = mediaEls[i]; // Check if element exists, has getAttribute func.\n\n if (mediaEl && mediaEl.getAttribute) {\n // Make sure this player hasn't already been set up.\n if (mediaEl.player === undefined) {\n var options = mediaEl.getAttribute('data-setup'); // Check if data-setup attr exists.\n // We only auto-setup if they've added the data-setup attr.\n\n if (options !== null) {\n // Create new video.js instance.\n videojs$1(mediaEl);\n }\n } // If getAttribute isn't defined, we need to wait for the DOM.\n\n } else {\n autoSetupTimeout(1);\n break;\n }\n } // No videos were found, so keep looping unless page is finished loading.\n\n } else if (!_windowLoaded) {\n autoSetupTimeout(1);\n }\n};\n/**\n * Wait until the page is loaded before running autoSetup. This will be called in\n * autoSetup if `hasLoaded` returns false.\n *\n * @param {number} wait\n * How long to wait in ms\n *\n * @param {module:videojs} [vjs]\n * The videojs library function\n */\n\n\nfunction autoSetupTimeout(wait, vjs) {\n // Protect against breakage in non-browser environments\n if (!isReal()) {\n return;\n }\n\n if (vjs) {\n videojs$1 = vjs;\n }\n\n window$1.setTimeout(autoSetup, wait);\n}\n/**\n * Used to set the internal tracking of window loaded state to true.\n *\n * @private\n */\n\n\nfunction setWindowLoaded() {\n _windowLoaded = true;\n window$1.removeEventListener('load', setWindowLoaded);\n}\n\nif (isReal()) {\n if (document.readyState === 'complete') {\n setWindowLoaded();\n } else {\n /**\n * Listen for the load event on window, and set _windowLoaded to true.\n *\n * We use a standard event listener here to avoid incrementing the GUID\n * before any players are created.\n *\n * @listens load\n */\n window$1.addEventListener('load', setWindowLoaded);\n }\n}\n\n/**\n * @file stylesheet.js\n * @module stylesheet\n */\n/**\n * Create a DOM syle element given a className for it.\n *\n * @param {string} className\n * The className to add to the created style element.\n *\n * @return {Element}\n * The element that was created.\n */\n\nvar createStyleElement = function createStyleElement(className) {\n var style = document.createElement('style');\n style.className = className;\n return style;\n};\n/**\n * Add text to a DOM element.\n *\n * @param {Element} el\n * The Element to add text content to.\n *\n * @param {string} content\n * The text to add to the element.\n */\n\nvar setTextContent = function setTextContent(el, content) {\n if (el.styleSheet) {\n el.styleSheet.cssText = content;\n } else {\n el.textContent = content;\n }\n};\n\n/**\n * @file guid.js\n * @module guid\n */\n// Default value for GUIDs. This allows us to reset the GUID counter in tests.\n//\n// The initial GUID is 3 because some users have come to rely on the first\n// default player ID ending up as `vjs_video_3`.\n//\n// See: https://github.com/videojs/video.js/pull/6216\nvar _initialGuid = 3;\n/**\n * Unique ID for an element or function\n *\n * @type {Number}\n */\n\nvar _guid = _initialGuid;\n/**\n * Get a unique auto-incrementing ID by number that has not been returned before.\n *\n * @return {number}\n * A new unique ID.\n */\n\nfunction newGUID() {\n return _guid++;\n}\n\n/**\n * @file dom-data.js\n * @module dom-data\n */\nvar FakeWeakMap;\n\nif (!window$1.WeakMap) {\n FakeWeakMap = /*#__PURE__*/function () {\n function FakeWeakMap() {\n this.vdata = 'vdata' + Math.floor(window$1.performance && window$1.performance.now() || Date.now());\n this.data = {};\n }\n\n var _proto = FakeWeakMap.prototype;\n\n _proto.set = function set(key, value) {\n var access = key[this.vdata] || newGUID();\n\n if (!key[this.vdata]) {\n key[this.vdata] = access;\n }\n\n this.data[access] = value;\n return this;\n };\n\n _proto.get = function get(key) {\n var access = key[this.vdata]; // we have data, return it\n\n if (access) {\n return this.data[access];\n } // we don't have data, return nothing.\n // return undefined explicitly as that's the contract for this method\n\n\n log$1('We have no data for this element', key);\n return undefined;\n };\n\n _proto.has = function has(key) {\n var access = key[this.vdata];\n return access in this.data;\n };\n\n _proto[\"delete\"] = function _delete(key) {\n var access = key[this.vdata];\n\n if (access) {\n delete this.data[access];\n delete key[this.vdata];\n }\n };\n\n return FakeWeakMap;\n }();\n}\n/**\n * Element Data Store.\n *\n * Allows for binding data to an element without putting it directly on the\n * element. Ex. Event listeners are stored here.\n * (also from jsninja.com, slightly modified and updated for closure compiler)\n *\n * @type {Object}\n * @private\n */\n\n\nvar DomData = window$1.WeakMap ? new WeakMap() : new FakeWeakMap();\n\n/**\n * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)\n * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)\n * This should work very similarly to jQuery's events, however it's based off the book version which isn't as\n * robust as jquery's, so there's probably some differences.\n *\n * @file events.js\n * @module events\n */\n/**\n * Clean up the listener cache and dispatchers\n *\n * @param {Element|Object} elem\n * Element to clean up\n *\n * @param {string} type\n * Type of event to clean up\n */\n\nfunction _cleanUpEvents(elem, type) {\n if (!DomData.has(elem)) {\n return;\n }\n\n var data = DomData.get(elem); // Remove the events of a particular type if there are none left\n\n if (data.handlers[type].length === 0) {\n delete data.handlers[type]; // data.handlers[type] = null;\n // Setting to null was causing an error with data.handlers\n // Remove the meta-handler from the element\n\n if (elem.removeEventListener) {\n elem.removeEventListener(type, data.dispatcher, false);\n } else if (elem.detachEvent) {\n elem.detachEvent('on' + type, data.dispatcher);\n }\n } // Remove the events object if there are no types left\n\n\n if (Object.getOwnPropertyNames(data.handlers).length <= 0) {\n delete data.handlers;\n delete data.dispatcher;\n delete data.disabled;\n } // Finally remove the element data if there is no data left\n\n\n if (Object.getOwnPropertyNames(data).length === 0) {\n DomData[\"delete\"](elem);\n }\n}\n/**\n * Loops through an array of event types and calls the requested method for each type.\n *\n * @param {Function} fn\n * The event method we want to use.\n *\n * @param {Element|Object} elem\n * Element or object to bind listeners to\n *\n * @param {string} type\n * Type of event to bind to.\n *\n * @param {EventTarget~EventListener} callback\n * Event listener.\n */\n\n\nfunction _handleMultipleEvents(fn, elem, types, callback) {\n types.forEach(function (type) {\n // Call the event method for each one of the types\n fn(elem, type, callback);\n });\n}\n/**\n * Fix a native event to have standard property values\n *\n * @param {Object} event\n * Event object to fix.\n *\n * @return {Object}\n * Fixed event object.\n */\n\n\nfunction fixEvent(event) {\n if (event.fixed_) {\n return event;\n }\n\n function returnTrue() {\n return true;\n }\n\n function returnFalse() {\n return false;\n } // Test if fixing up is needed\n // Used to check if !event.stopPropagation instead of isPropagationStopped\n // But native events return true for stopPropagation, but don't have\n // other expected methods like isPropagationStopped. Seems to be a problem\n // with the Javascript Ninja code. So we're just overriding all events now.\n\n\n if (!event || !event.isPropagationStopped || !event.isImmediatePropagationStopped) {\n var old = event || window$1.event;\n event = {}; // Clone the old object so that we can modify the values event = {};\n // IE8 Doesn't like when you mess with native event properties\n // Firefox returns false for event.hasOwnProperty('type') and other props\n // which makes copying more difficult.\n // TODO: Probably best to create a whitelist of event props\n\n for (var key in old) {\n // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y\n // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation\n // and webkitMovementX/Y\n // Lighthouse complains if Event.path is copied\n if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY' && key !== 'path') {\n // Chrome 32+ warns if you try to copy deprecated returnValue, but\n // we still want to if preventDefault isn't supported (IE8).\n if (!(key === 'returnValue' && old.preventDefault)) {\n event[key] = old[key];\n }\n }\n } // The event occurred on this element\n\n\n if (!event.target) {\n event.target = event.srcElement || document;\n } // Handle which other element the event is related to\n\n\n if (!event.relatedTarget) {\n event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;\n } // Stop the default browser action\n\n\n event.preventDefault = function () {\n if (old.preventDefault) {\n old.preventDefault();\n }\n\n event.returnValue = false;\n old.returnValue = false;\n event.defaultPrevented = true;\n };\n\n event.defaultPrevented = false; // Stop the event from bubbling\n\n event.stopPropagation = function () {\n if (old.stopPropagation) {\n old.stopPropagation();\n }\n\n event.cancelBubble = true;\n old.cancelBubble = true;\n event.isPropagationStopped = returnTrue;\n };\n\n event.isPropagationStopped = returnFalse; // Stop the event from bubbling and executing other handlers\n\n event.stopImmediatePropagation = function () {\n if (old.stopImmediatePropagation) {\n old.stopImmediatePropagation();\n }\n\n event.isImmediatePropagationStopped = returnTrue;\n event.stopPropagation();\n };\n\n event.isImmediatePropagationStopped = returnFalse; // Handle mouse position\n\n if (event.clientX !== null && event.clientX !== undefined) {\n var doc = document.documentElement;\n var body = document.body;\n event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);\n event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);\n } // Handle key presses\n\n\n event.which = event.charCode || event.keyCode; // Fix button for mouse clicks:\n // 0 == left; 1 == middle; 2 == right\n\n if (event.button !== null && event.button !== undefined) {\n // The following is disabled because it does not pass videojs-standard\n // and... yikes.\n\n /* eslint-disable */\n event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;\n /* eslint-enable */\n }\n }\n\n event.fixed_ = true; // Returns fixed-up instance\n\n return event;\n}\n/**\n * Whether passive event listeners are supported\n */\n\nvar _supportsPassive;\n\nvar supportsPassive = function supportsPassive() {\n if (typeof _supportsPassive !== 'boolean') {\n _supportsPassive = false;\n\n try {\n var opts = Object.defineProperty({}, 'passive', {\n get: function get() {\n _supportsPassive = true;\n }\n });\n window$1.addEventListener('test', null, opts);\n window$1.removeEventListener('test', null, opts);\n } catch (e) {// disregard\n }\n }\n\n return _supportsPassive;\n};\n/**\n * Touch events Chrome expects to be passive\n */\n\n\nvar passiveEvents = ['touchstart', 'touchmove'];\n/**\n * Add an event listener to element\n * It stores the handler function in a separate cache object\n * and adds a generic handler to the element's event,\n * along with a unique id (guid) to the element.\n *\n * @param {Element|Object} elem\n * Element or object to bind listeners to\n *\n * @param {string|string[]} type\n * Type of event to bind to.\n *\n * @param {EventTarget~EventListener} fn\n * Event listener.\n */\n\nfunction on(elem, type, fn) {\n if (Array.isArray(type)) {\n return _handleMultipleEvents(on, elem, type, fn);\n }\n\n if (!DomData.has(elem)) {\n DomData.set(elem, {});\n }\n\n var data = DomData.get(elem); // We need a place to store all our handler data\n\n if (!data.handlers) {\n data.handlers = {};\n }\n\n if (!data.handlers[type]) {\n data.handlers[type] = [];\n }\n\n if (!fn.guid) {\n fn.guid = newGUID();\n }\n\n data.handlers[type].push(fn);\n\n if (!data.dispatcher) {\n data.disabled = false;\n\n data.dispatcher = function (event, hash) {\n if (data.disabled) {\n return;\n }\n\n event = fixEvent(event);\n var handlers = data.handlers[event.type];\n\n if (handlers) {\n // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.\n var handlersCopy = handlers.slice(0);\n\n for (var m = 0, n = handlersCopy.length; m < n; m++) {\n if (event.isImmediatePropagationStopped()) {\n break;\n } else {\n try {\n handlersCopy[m].call(elem, event, hash);\n } catch (e) {\n log$1.error(e);\n }\n }\n }\n }\n };\n }\n\n if (data.handlers[type].length === 1) {\n if (elem.addEventListener) {\n var options = false;\n\n if (supportsPassive() && passiveEvents.indexOf(type) > -1) {\n options = {\n passive: true\n };\n }\n\n elem.addEventListener(type, data.dispatcher, options);\n } else if (elem.attachEvent) {\n elem.attachEvent('on' + type, data.dispatcher);\n }\n }\n}\n/**\n * Removes event listeners from an element\n *\n * @param {Element|Object} elem\n * Object to remove listeners from.\n *\n * @param {string|string[]} [type]\n * Type of listener to remove. Don't include to remove all events from element.\n *\n * @param {EventTarget~EventListener} [fn]\n * Specific listener to remove. Don't include to remove listeners for an event\n * type.\n */\n\nfunction off(elem, type, fn) {\n // Don't want to add a cache object through getElData if not needed\n if (!DomData.has(elem)) {\n return;\n }\n\n var data = DomData.get(elem); // If no events exist, nothing to unbind\n\n if (!data.handlers) {\n return;\n }\n\n if (Array.isArray(type)) {\n return _handleMultipleEvents(off, elem, type, fn);\n } // Utility function\n\n\n var removeType = function removeType(el, t) {\n data.handlers[t] = [];\n\n _cleanUpEvents(el, t);\n }; // Are we removing all bound events?\n\n\n if (type === undefined) {\n for (var t in data.handlers) {\n if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) {\n removeType(elem, t);\n }\n }\n\n return;\n }\n\n var handlers = data.handlers[type]; // If no handlers exist, nothing to unbind\n\n if (!handlers) {\n return;\n } // If no listener was provided, remove all listeners for type\n\n\n if (!fn) {\n removeType(elem, type);\n return;\n } // We're only removing a single handler\n\n\n if (fn.guid) {\n for (var n = 0; n < handlers.length; n++) {\n if (handlers[n].guid === fn.guid) {\n handlers.splice(n--, 1);\n }\n }\n }\n\n _cleanUpEvents(elem, type);\n}\n/**\n * Trigger an event for an element\n *\n * @param {Element|Object} elem\n * Element to trigger an event on\n *\n * @param {EventTarget~Event|string} event\n * A string (the type) or an event object with a type attribute\n *\n * @param {Object} [hash]\n * data hash to pass along with the event\n *\n * @return {boolean|undefined}\n * Returns the opposite of `defaultPrevented` if default was\n * prevented. Otherwise, returns `undefined`\n */\n\nfunction trigger(elem, event, hash) {\n // Fetches element data and a reference to the parent (for bubbling).\n // Don't want to add a data object to cache for every parent,\n // so checking hasElData first.\n var elemData = DomData.has(elem) ? DomData.get(elem) : {};\n var parent = elem.parentNode || elem.ownerDocument; // type = event.type || event,\n // handler;\n // If an event name was passed as a string, creates an event out of it\n\n if (typeof event === 'string') {\n event = {\n type: event,\n target: elem\n };\n } else if (!event.target) {\n event.target = elem;\n } // Normalizes the event properties.\n\n\n event = fixEvent(event); // If the passed element has a dispatcher, executes the established handlers.\n\n if (elemData.dispatcher) {\n elemData.dispatcher.call(elem, event, hash);\n } // Unless explicitly stopped or the event does not bubble (e.g. media events)\n // recursively calls this function to bubble the event up the DOM.\n\n\n if (parent && !event.isPropagationStopped() && event.bubbles === true) {\n trigger.call(null, parent, event, hash); // If at the top of the DOM, triggers the default action unless disabled.\n } else if (!parent && !event.defaultPrevented && event.target && event.target[event.type]) {\n if (!DomData.has(event.target)) {\n DomData.set(event.target, {});\n }\n\n var targetData = DomData.get(event.target); // Checks if the target has a default action for this event.\n\n if (event.target[event.type]) {\n // Temporarily disables event dispatching on the target as we have already executed the handler.\n targetData.disabled = true; // Executes the default action.\n\n if (typeof event.target[event.type] === 'function') {\n event.target[event.type]();\n } // Re-enables event dispatching.\n\n\n targetData.disabled = false;\n }\n } // Inform the triggerer if the default was prevented by returning false\n\n\n return !event.defaultPrevented;\n}\n/**\n * Trigger a listener only once for an event.\n *\n * @param {Element|Object} elem\n * Element or object to bind to.\n *\n * @param {string|string[]} type\n * Name/type of event\n *\n * @param {Event~EventListener} fn\n * Event listener function\n */\n\nfunction one(elem, type, fn) {\n if (Array.isArray(type)) {\n return _handleMultipleEvents(one, elem, type, fn);\n }\n\n var func = function func() {\n off(elem, type, func);\n fn.apply(this, arguments);\n }; // copy the guid to the new function so it can removed using the original function's ID\n\n\n func.guid = fn.guid = fn.guid || newGUID();\n on(elem, type, func);\n}\n/**\n * Trigger a listener only once and then turn if off for all\n * configured events\n *\n * @param {Element|Object} elem\n * Element or object to bind to.\n *\n * @param {string|string[]} type\n * Name/type of event\n *\n * @param {Event~EventListener} fn\n * Event listener function\n */\n\nfunction any(elem, type, fn) {\n var func = function func() {\n off(elem, type, func);\n fn.apply(this, arguments);\n }; // copy the guid to the new function so it can removed using the original function's ID\n\n\n func.guid = fn.guid = fn.guid || newGUID(); // multiple ons, but one off for everything\n\n on(elem, type, func);\n}\n\nvar Events = /*#__PURE__*/Object.freeze({\n __proto__: null,\n fixEvent: fixEvent,\n on: on,\n off: off,\n trigger: trigger,\n one: one,\n any: any\n});\n\n/**\n * @file fn.js\n * @module fn\n */\nvar UPDATE_REFRESH_INTERVAL = 30;\n/**\n * Bind (a.k.a proxy or context). A simple method for changing the context of\n * a function.\n *\n * It also stores a unique id on the function so it can be easily removed from\n * events.\n *\n * @function\n * @param {Mixed} context\n * The object to bind as scope.\n *\n * @param {Function} fn\n * The function to be bound to a scope.\n *\n * @param {number} [uid]\n * An optional unique ID for the function to be set\n *\n * @return {Function}\n * The new function that will be bound into the context given\n */\n\nvar bind = function bind(context, fn, uid) {\n // Make sure the function has a unique ID\n if (!fn.guid) {\n fn.guid = newGUID();\n } // Create the new function that changes the context\n\n\n var bound = fn.bind(context); // Allow for the ability to individualize this function\n // Needed in the case where multiple objects might share the same prototype\n // IF both items add an event listener with the same function, then you try to remove just one\n // it will remove both because they both have the same guid.\n // when using this, you need to use the bind method when you remove the listener as well.\n // currently used in text tracks\n\n bound.guid = uid ? uid + '_' + fn.guid : fn.guid;\n return bound;\n};\n/**\n * Wraps the given function, `fn`, with a new function that only invokes `fn`\n * at most once per every `wait` milliseconds.\n *\n * @function\n * @param {Function} fn\n * The function to be throttled.\n *\n * @param {number} wait\n * The number of milliseconds by which to throttle.\n *\n * @return {Function}\n */\n\nvar throttle = function throttle(fn, wait) {\n var last = window$1.performance.now();\n\n var throttled = function throttled() {\n var now = window$1.performance.now();\n\n if (now - last >= wait) {\n fn.apply(void 0, arguments);\n last = now;\n }\n };\n\n return throttled;\n};\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked.\n *\n * Inspired by lodash and underscore implementations.\n *\n * @function\n * @param {Function} func\n * The function to wrap with debounce behavior.\n *\n * @param {number} wait\n * The number of milliseconds to wait after the last invocation.\n *\n * @param {boolean} [immediate]\n * Whether or not to invoke the function immediately upon creation.\n *\n * @param {Object} [context=window]\n * The \"context\" in which the debounced function should debounce. For\n * example, if this function should be tied to a Video.js player,\n * the player can be passed here. Alternatively, defaults to the\n * global `window` object.\n *\n * @return {Function}\n * A debounced function.\n */\n\nvar debounce = function debounce(func, wait, immediate, context) {\n if (context === void 0) {\n context = window$1;\n }\n\n var timeout;\n\n var cancel = function cancel() {\n context.clearTimeout(timeout);\n timeout = null;\n };\n /* eslint-disable consistent-this */\n\n\n var debounced = function debounced() {\n var self = this;\n var args = arguments;\n\n var _later = function later() {\n timeout = null;\n _later = null;\n\n if (!immediate) {\n func.apply(self, args);\n }\n };\n\n if (!timeout && immediate) {\n func.apply(self, args);\n }\n\n context.clearTimeout(timeout);\n timeout = context.setTimeout(_later, wait);\n };\n /* eslint-enable consistent-this */\n\n\n debounced.cancel = cancel;\n return debounced;\n};\n\n/**\n * @file src/js/event-target.js\n */\n/**\n * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It\n * adds shorthand functions that wrap around lengthy functions. For example:\n * the `on` function is a wrapper around `addEventListener`.\n *\n * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}\n * @class EventTarget\n */\n\nvar EventTarget$2 = function EventTarget() {};\n/**\n * A Custom DOM event.\n *\n * @typedef {Object} EventTarget~Event\n * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}\n */\n\n/**\n * All event listeners should follow the following format.\n *\n * @callback EventTarget~EventListener\n * @this {EventTarget}\n *\n * @param {EventTarget~Event} event\n * the event that triggered this function\n *\n * @param {Object} [hash]\n * hash of data sent during the event\n */\n\n/**\n * An object containing event names as keys and booleans as values.\n *\n * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}\n * will have extra functionality. See that function for more information.\n *\n * @property EventTarget.prototype.allowedEvents_\n * @private\n */\n\n\nEventTarget$2.prototype.allowedEvents_ = {};\n/**\n * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a\n * function that will get called when an event with a certain name gets triggered.\n *\n * @param {string|string[]} type\n * An event name or an array of event names.\n *\n * @param {EventTarget~EventListener} fn\n * The function to call with `EventTarget`s\n */\n\nEventTarget$2.prototype.on = function (type, fn) {\n // Remove the addEventListener alias before calling Events.on\n // so we don't get into an infinite type loop\n var ael = this.addEventListener;\n\n this.addEventListener = function () {};\n\n on(this, type, fn);\n this.addEventListener = ael;\n};\n/**\n * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic\n * the standard DOM API.\n *\n * @function\n * @see {@link EventTarget#on}\n */\n\n\nEventTarget$2.prototype.addEventListener = EventTarget$2.prototype.on;\n/**\n * Removes an `event listener` for a specific event from an instance of `EventTarget`.\n * This makes it so that the `event listener` will no longer get called when the\n * named event happens.\n *\n * @param {string|string[]} type\n * An event name or an array of event names.\n *\n * @param {EventTarget~EventListener} fn\n * The function to remove.\n */\n\nEventTarget$2.prototype.off = function (type, fn) {\n off(this, type, fn);\n};\n/**\n * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic\n * the standard DOM API.\n *\n * @function\n * @see {@link EventTarget#off}\n */\n\n\nEventTarget$2.prototype.removeEventListener = EventTarget$2.prototype.off;\n/**\n * This function will add an `event listener` that gets triggered only once. After the\n * first trigger it will get removed. This is like adding an `event listener`\n * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.\n *\n * @param {string|string[]} type\n * An event name or an array of event names.\n *\n * @param {EventTarget~EventListener} fn\n * The function to be called once for each event name.\n */\n\nEventTarget$2.prototype.one = function (type, fn) {\n // Remove the addEventListener aliasing Events.on\n // so we don't get into an infinite type loop\n var ael = this.addEventListener;\n\n this.addEventListener = function () {};\n\n one(this, type, fn);\n this.addEventListener = ael;\n};\n\nEventTarget$2.prototype.any = function (type, fn) {\n // Remove the addEventListener aliasing Events.on\n // so we don't get into an infinite type loop\n var ael = this.addEventListener;\n\n this.addEventListener = function () {};\n\n any(this, type, fn);\n this.addEventListener = ael;\n};\n/**\n * This function causes an event to happen. This will then cause any `event listeners`\n * that are waiting for that event, to get called. If there are no `event listeners`\n * for an event then nothing will happen.\n *\n * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.\n * Trigger will also call the `on` + `uppercaseEventName` function.\n *\n * Example:\n * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call\n * `onClick` if it exists.\n *\n * @param {string|EventTarget~Event|Object} event\n * The name of the event, an `Event`, or an object with a key of type set to\n * an event name.\n */\n\n\nEventTarget$2.prototype.trigger = function (event) {\n var type = event.type || event; // deprecation\n // In a future version we should default target to `this`\n // similar to how we default the target to `elem` in\n // `Events.trigger`. Right now the default `target` will be\n // `document` due to the `Event.fixEvent` call.\n\n if (typeof event === 'string') {\n event = {\n type: type\n };\n }\n\n event = fixEvent(event);\n\n if (this.allowedEvents_[type] && this['on' + type]) {\n this['on' + type](event);\n }\n\n trigger(this, event);\n};\n/**\n * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic\n * the standard DOM API.\n *\n * @function\n * @see {@link EventTarget#trigger}\n */\n\n\nEventTarget$2.prototype.dispatchEvent = EventTarget$2.prototype.trigger;\nvar EVENT_MAP;\n\nEventTarget$2.prototype.queueTrigger = function (event) {\n var _this = this;\n\n // only set up EVENT_MAP if it'll be used\n if (!EVENT_MAP) {\n EVENT_MAP = new Map();\n }\n\n var type = event.type || event;\n var map = EVENT_MAP.get(this);\n\n if (!map) {\n map = new Map();\n EVENT_MAP.set(this, map);\n }\n\n var oldTimeout = map.get(type);\n map[\"delete\"](type);\n window$1.clearTimeout(oldTimeout);\n var timeout = window$1.setTimeout(function () {\n map[\"delete\"](type); // if we cleared out all timeouts for the current target, delete its map\n\n if (map.size === 0) {\n map = null;\n EVENT_MAP[\"delete\"](_this);\n }\n\n _this.trigger(event);\n }, 0);\n map.set(type, timeout);\n};\n\n/**\n * @file mixins/evented.js\n * @module evented\n */\n\nvar objName = function objName(obj) {\n if (typeof obj.name === 'function') {\n return obj.name();\n }\n\n if (typeof obj.name === 'string') {\n return obj.name;\n }\n\n if (obj.name_) {\n return obj.name_;\n }\n\n if (obj.constructor && obj.constructor.name) {\n return obj.constructor.name;\n }\n\n return typeof obj;\n};\n/**\n * Returns whether or not an object has had the evented mixin applied.\n *\n * @param {Object} object\n * An object to test.\n *\n * @return {boolean}\n * Whether or not the object appears to be evented.\n */\n\n\nvar isEvented = function isEvented(object) {\n return object instanceof EventTarget$2 || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(function (k) {\n return typeof object[k] === 'function';\n });\n};\n/**\n * Adds a callback to run after the evented mixin applied.\n *\n * @param {Object} object\n * An object to Add\n * @param {Function} callback\n * The callback to run.\n */\n\n\nvar addEventedCallback = function addEventedCallback(target, callback) {\n if (isEvented(target)) {\n callback();\n } else {\n if (!target.eventedCallbacks) {\n target.eventedCallbacks = [];\n }\n\n target.eventedCallbacks.push(callback);\n }\n};\n/**\n * Whether a value is a valid event type - non-empty string or array.\n *\n * @private\n * @param {string|Array} type\n * The type value to test.\n *\n * @return {boolean}\n * Whether or not the type is a valid event type.\n */\n\n\nvar isValidEventType = function isValidEventType(type) {\n return (// The regex here verifies that the `type` contains at least one non-\n // whitespace character.\n typeof type === 'string' && /\\S/.test(type) || Array.isArray(type) && !!type.length\n );\n};\n/**\n * Validates a value to determine if it is a valid event target. Throws if not.\n *\n * @private\n * @throws {Error}\n * If the target does not appear to be a valid event target.\n *\n * @param {Object} target\n * The object to test.\n *\n * @param {Object} obj\n * The evented object we are validating for\n *\n * @param {string} fnName\n * The name of the evented mixin function that called this.\n */\n\n\nvar validateTarget = function validateTarget(target, obj, fnName) {\n if (!target || !target.nodeName && !isEvented(target)) {\n throw new Error(\"Invalid target for \" + objName(obj) + \"#\" + fnName + \"; must be a DOM node or evented object.\");\n }\n};\n/**\n * Validates a value to determine if it is a valid event target. Throws if not.\n *\n * @private\n * @throws {Error}\n * If the type does not appear to be a valid event type.\n *\n * @param {string|Array} type\n * The type to test.\n *\n * @param {Object} obj\n* The evented object we are validating for\n *\n * @param {string} fnName\n * The name of the evented mixin function that called this.\n */\n\n\nvar validateEventType = function validateEventType(type, obj, fnName) {\n if (!isValidEventType(type)) {\n throw new Error(\"Invalid event type for \" + objName(obj) + \"#\" + fnName + \"; must be a non-empty string or array.\");\n }\n};\n/**\n * Validates a value to determine if it is a valid listener. Throws if not.\n *\n * @private\n * @throws {Error}\n * If the listener is not a function.\n *\n * @param {Function} listener\n * The listener to test.\n *\n * @param {Object} obj\n * The evented object we are validating for\n *\n * @param {string} fnName\n * The name of the evented mixin function that called this.\n */\n\n\nvar validateListener = function validateListener(listener, obj, fnName) {\n if (typeof listener !== 'function') {\n throw new Error(\"Invalid listener for \" + objName(obj) + \"#\" + fnName + \"; must be a function.\");\n }\n};\n/**\n * Takes an array of arguments given to `on()` or `one()`, validates them, and\n * normalizes them into an object.\n *\n * @private\n * @param {Object} self\n * The evented object on which `on()` or `one()` was called. This\n * object will be bound as the `this` value for the listener.\n *\n * @param {Array} args\n * An array of arguments passed to `on()` or `one()`.\n *\n * @param {string} fnName\n * The name of the evented mixin function that called this.\n *\n * @return {Object}\n * An object containing useful values for `on()` or `one()` calls.\n */\n\n\nvar normalizeListenArgs = function normalizeListenArgs(self, args, fnName) {\n // If the number of arguments is less than 3, the target is always the\n // evented object itself.\n var isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;\n var target;\n var type;\n var listener;\n\n if (isTargetingSelf) {\n target = self.eventBusEl_; // Deal with cases where we got 3 arguments, but we are still listening to\n // the evented object itself.\n\n if (args.length >= 3) {\n args.shift();\n }\n\n type = args[0];\n listener = args[1];\n } else {\n target = args[0];\n type = args[1];\n listener = args[2];\n }\n\n validateTarget(target, self, fnName);\n validateEventType(type, self, fnName);\n validateListener(listener, self, fnName);\n listener = bind(self, listener);\n return {\n isTargetingSelf: isTargetingSelf,\n target: target,\n type: type,\n listener: listener\n };\n};\n/**\n * Adds the listener to the event type(s) on the target, normalizing for\n * the type of target.\n *\n * @private\n * @param {Element|Object} target\n * A DOM node or evented object.\n *\n * @param {string} method\n * The event binding method to use (\"on\" or \"one\").\n *\n * @param {string|Array} type\n * One or more event type(s).\n *\n * @param {Function} listener\n * A listener function.\n */\n\n\nvar listen = function listen(target, method, type, listener) {\n validateTarget(target, target, method);\n\n if (target.nodeName) {\n Events[method](target, type, listener);\n } else {\n target[method](type, listener);\n }\n};\n/**\n * Contains methods that provide event capabilities to an object which is passed\n * to {@link module:evented|evented}.\n *\n * @mixin EventedMixin\n */\n\n\nvar EventedMixin = {\n /**\n * Add a listener to an event (or events) on this object or another evented\n * object.\n *\n * @param {string|Array|Element|Object} targetOrType\n * If this is a string or array, it represents the event type(s)\n * that will trigger the listener.\n *\n * Another evented object can be passed here instead, which will\n * cause the listener to listen for events on _that_ object.\n *\n * In either case, the listener's `this` value will be bound to\n * this object.\n *\n * @param {string|Array|Function} typeOrListener\n * If the first argument was a string or array, this should be the\n * listener function. Otherwise, this is a string or array of event\n * type(s).\n *\n * @param {Function} [listener]\n * If the first argument was another evented object, this will be\n * the listener function.\n */\n on: function on() {\n var _this = this;\n\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n var _normalizeListenArgs = normalizeListenArgs(this, args, 'on'),\n isTargetingSelf = _normalizeListenArgs.isTargetingSelf,\n target = _normalizeListenArgs.target,\n type = _normalizeListenArgs.type,\n listener = _normalizeListenArgs.listener;\n\n listen(target, 'on', type, listener); // If this object is listening to another evented object.\n\n if (!isTargetingSelf) {\n // If this object is disposed, remove the listener.\n var removeListenerOnDispose = function removeListenerOnDispose() {\n return _this.off(target, type, listener);\n }; // Use the same function ID as the listener so we can remove it later it\n // using the ID of the original listener.\n\n\n removeListenerOnDispose.guid = listener.guid; // Add a listener to the target's dispose event as well. This ensures\n // that if the target is disposed BEFORE this object, we remove the\n // removal listener that was just added. Otherwise, we create a memory leak.\n\n var removeRemoverOnTargetDispose = function removeRemoverOnTargetDispose() {\n return _this.off('dispose', removeListenerOnDispose);\n }; // Use the same function ID as the listener so we can remove it later\n // it using the ID of the original listener.\n\n\n removeRemoverOnTargetDispose.guid = listener.guid;\n listen(this, 'on', 'dispose', removeListenerOnDispose);\n listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);\n }\n },\n\n /**\n * Add a listener to an event (or events) on this object or another evented\n * object. The listener will be called once per event and then removed.\n *\n * @param {string|Array|Element|Object} targetOrType\n * If this is a string or array, it represents the event type(s)\n * that will trigger the listener.\n *\n * Another evented object can be passed here instead, which will\n * cause the listener to listen for events on _that_ object.\n *\n * In either case, the listener's `this` value will be bound to\n * this object.\n *\n * @param {string|Array|Function} typeOrListener\n * If the first argument was a string or array, this should be the\n * listener function. Otherwise, this is a string or array of event\n * type(s).\n *\n * @param {Function} [listener]\n * If the first argument was another evented object, this will be\n * the listener function.\n */\n one: function one() {\n var _this2 = this;\n\n for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n args[_key2] = arguments[_key2];\n }\n\n var _normalizeListenArgs2 = normalizeListenArgs(this, args, 'one'),\n isTargetingSelf = _normalizeListenArgs2.isTargetingSelf,\n target = _normalizeListenArgs2.target,\n type = _normalizeListenArgs2.type,\n listener = _normalizeListenArgs2.listener; // Targeting this evented object.\n\n\n if (isTargetingSelf) {\n listen(target, 'one', type, listener); // Targeting another evented object.\n } else {\n // TODO: This wrapper is incorrect! It should only\n // remove the wrapper for the event type that called it.\n // Instead all listners are removed on the first trigger!\n // see https://github.com/videojs/video.js/issues/5962\n var wrapper = function wrapper() {\n _this2.off(target, type, wrapper);\n\n for (var _len3 = arguments.length, largs = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n largs[_key3] = arguments[_key3];\n }\n\n listener.apply(null, largs);\n }; // Use the same function ID as the listener so we can remove it later\n // it using the ID of the original listener.\n\n\n wrapper.guid = listener.guid;\n listen(target, 'one', type, wrapper);\n }\n },\n\n /**\n * Add a listener to an event (or events) on this object or another evented\n * object. The listener will only be called once for the first event that is triggered\n * then removed.\n *\n * @param {string|Array|Element|Object} targetOrType\n * If this is a string or array, it represents the event type(s)\n * that will trigger the listener.\n *\n * Another evented object can be passed here instead, which will\n * cause the listener to listen for events on _that_ object.\n *\n * In either case, the listener's `this` value will be bound to\n * this object.\n *\n * @param {string|Array|Function} typeOrListener\n * If the first argument was a string or array, this should be the\n * listener function. Otherwise, this is a string or array of event\n * type(s).\n *\n * @param {Function} [listener]\n * If the first argument was another evented object, this will be\n * the listener function.\n */\n any: function any() {\n var _this3 = this;\n\n for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {\n args[_key4] = arguments[_key4];\n }\n\n var _normalizeListenArgs3 = normalizeListenArgs(this, args, 'any'),\n isTargetingSelf = _normalizeListenArgs3.isTargetingSelf,\n target = _normalizeListenArgs3.target,\n type = _normalizeListenArgs3.type,\n listener = _normalizeListenArgs3.listener; // Targeting this evented object.\n\n\n if (isTargetingSelf) {\n listen(target, 'any', type, listener); // Targeting another evented object.\n } else {\n var wrapper = function wrapper() {\n _this3.off(target, type, wrapper);\n\n for (var _len5 = arguments.length, largs = new Array(_len5), _key5 = 0; _key5 < _len5; _key5++) {\n largs[_key5] = arguments[_key5];\n }\n\n listener.apply(null, largs);\n }; // Use the same function ID as the listener so we can remove it later\n // it using the ID of the original listener.\n\n\n wrapper.guid = listener.guid;\n listen(target, 'any', type, wrapper);\n }\n },\n\n /**\n * Removes listener(s) from event(s) on an evented object.\n *\n * @param {string|Array|Element|Object} [targetOrType]\n * If this is a string or array, it represents the event type(s).\n *\n * Another evented object can be passed here instead, in which case\n * ALL 3 arguments are _required_.\n *\n * @param {string|Array|Function} [typeOrListener]\n * If the first argument was a string or array, this may be the\n * listener function. Otherwise, this is a string or array of event\n * type(s).\n *\n * @param {Function} [listener]\n * If the first argument was another evented object, this will be\n * the listener function; otherwise, _all_ listeners bound to the\n * event type(s) will be removed.\n */\n off: function off$1(targetOrType, typeOrListener, listener) {\n // Targeting this evented object.\n if (!targetOrType || isValidEventType(targetOrType)) {\n off(this.eventBusEl_, targetOrType, typeOrListener); // Targeting another evented object.\n } else {\n var target = targetOrType;\n var type = typeOrListener; // Fail fast and in a meaningful way!\n\n validateTarget(target, this, 'off');\n validateEventType(type, this, 'off');\n validateListener(listener, this, 'off'); // Ensure there's at least a guid, even if the function hasn't been used\n\n listener = bind(this, listener); // Remove the dispose listener on this evented object, which was given\n // the same guid as the event listener in on().\n\n this.off('dispose', listener);\n\n if (target.nodeName) {\n off(target, type, listener);\n off(target, 'dispose', listener);\n } else if (isEvented(target)) {\n target.off(type, listener);\n target.off('dispose', listener);\n }\n }\n },\n\n /**\n * Fire an event on this evented object, causing its listeners to be called.\n *\n * @param {string|Object} event\n * An event type or an object with a type property.\n *\n * @param {Object} [hash]\n * An additional object to pass along to listeners.\n *\n * @return {boolean}\n * Whether or not the default behavior was prevented.\n */\n trigger: function trigger$1(event, hash) {\n validateTarget(this.eventBusEl_, this, 'trigger');\n var type = event && typeof event !== 'string' ? event.type : event;\n\n if (!isValidEventType(type)) {\n var error = \"Invalid event type for \" + objName(this) + \"#trigger; \" + 'must be a non-empty string or object with a type key that has a non-empty value.';\n\n if (event) {\n (this.log || log$1).error(error);\n } else {\n throw new Error(error);\n }\n }\n\n return trigger(this.eventBusEl_, event, hash);\n }\n};\n/**\n * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.\n *\n * @param {Object} target\n * The object to which to add event methods.\n *\n * @param {Object} [options={}]\n * Options for customizing the mixin behavior.\n *\n * @param {string} [options.eventBusKey]\n * By default, adds a `eventBusEl_` DOM element to the target object,\n * which is used as an event bus. If the target object already has a\n * DOM element that should be used, pass its key here.\n *\n * @return {Object}\n * The target object.\n */\n\nfunction evented(target, options) {\n if (options === void 0) {\n options = {};\n }\n\n var _options = options,\n eventBusKey = _options.eventBusKey; // Set or create the eventBusEl_.\n\n if (eventBusKey) {\n if (!target[eventBusKey].nodeName) {\n throw new Error(\"The eventBusKey \\\"\" + eventBusKey + \"\\\" does not refer to an element.\");\n }\n\n target.eventBusEl_ = target[eventBusKey];\n } else {\n target.eventBusEl_ = createEl('span', {\n className: 'vjs-event-bus'\n });\n }\n\n assign(target, EventedMixin);\n\n if (target.eventedCallbacks) {\n target.eventedCallbacks.forEach(function (callback) {\n callback();\n });\n } // When any evented object is disposed, it removes all its listeners.\n\n\n target.on('dispose', function () {\n target.off();\n [target, target.el_, target.eventBusEl_].forEach(function (val) {\n if (val && DomData.has(val)) {\n DomData[\"delete\"](val);\n }\n });\n window$1.setTimeout(function () {\n target.eventBusEl_ = null;\n }, 0);\n });\n return target;\n}\n\n/**\n * @file mixins/stateful.js\n * @module stateful\n */\n/**\n * Contains methods that provide statefulness to an object which is passed\n * to {@link module:stateful}.\n *\n * @mixin StatefulMixin\n */\n\nvar StatefulMixin = {\n /**\n * A hash containing arbitrary keys and values representing the state of\n * the object.\n *\n * @type {Object}\n */\n state: {},\n\n /**\n * Set the state of an object by mutating its\n * {@link module:stateful~StatefulMixin.state|state} object in place.\n *\n * @fires module:stateful~StatefulMixin#statechanged\n * @param {Object|Function} stateUpdates\n * A new set of properties to shallow-merge into the plugin state.\n * Can be a plain object or a function returning a plain object.\n *\n * @return {Object|undefined}\n * An object containing changes that occurred. If no changes\n * occurred, returns `undefined`.\n */\n setState: function setState(stateUpdates) {\n var _this = this;\n\n // Support providing the `stateUpdates` state as a function.\n if (typeof stateUpdates === 'function') {\n stateUpdates = stateUpdates();\n }\n\n var changes;\n each(stateUpdates, function (value, key) {\n // Record the change if the value is different from what's in the\n // current state.\n if (_this.state[key] !== value) {\n changes = changes || {};\n changes[key] = {\n from: _this.state[key],\n to: value\n };\n }\n\n _this.state[key] = value;\n }); // Only trigger \"statechange\" if there were changes AND we have a trigger\n // function. This allows us to not require that the target object be an\n // evented object.\n\n if (changes && isEvented(this)) {\n /**\n * An event triggered on an object that is both\n * {@link module:stateful|stateful} and {@link module:evented|evented}\n * indicating that its state has changed.\n *\n * @event module:stateful~StatefulMixin#statechanged\n * @type {Object}\n * @property {Object} changes\n * A hash containing the properties that were changed and\n * the values they were changed `from` and `to`.\n */\n this.trigger({\n changes: changes,\n type: 'statechanged'\n });\n }\n\n return changes;\n }\n};\n/**\n * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target\n * object.\n *\n * If the target object is {@link module:evented|evented} and has a\n * `handleStateChanged` method, that method will be automatically bound to the\n * `statechanged` event on itself.\n *\n * @param {Object} target\n * The object to be made stateful.\n *\n * @param {Object} [defaultState]\n * A default set of properties to populate the newly-stateful object's\n * `state` property.\n *\n * @return {Object}\n * Returns the `target`.\n */\n\nfunction stateful(target, defaultState) {\n assign(target, StatefulMixin); // This happens after the mixing-in because we need to replace the `state`\n // added in that step.\n\n target.state = assign({}, target.state, defaultState); // Auto-bind the `handleStateChanged` method of the target object if it exists.\n\n if (typeof target.handleStateChanged === 'function' && isEvented(target)) {\n target.on('statechanged', target.handleStateChanged);\n }\n\n return target;\n}\n\n/**\n * @file string-cases.js\n * @module to-lower-case\n */\n\n/**\n * Lowercase the first letter of a string.\n *\n * @param {string} string\n * String to be lowercased\n *\n * @return {string}\n * The string with a lowercased first letter\n */\nvar toLowerCase = function toLowerCase(string) {\n if (typeof string !== 'string') {\n return string;\n }\n\n return string.replace(/./, function (w) {\n return w.toLowerCase();\n });\n};\n/**\n * Uppercase the first letter of a string.\n *\n * @param {string} string\n * String to be uppercased\n *\n * @return {string}\n * The string with an uppercased first letter\n */\n\nvar toTitleCase$1 = function toTitleCase(string) {\n if (typeof string !== 'string') {\n return string;\n }\n\n return string.replace(/./, function (w) {\n return w.toUpperCase();\n });\n};\n/**\n * Compares the TitleCase versions of the two strings for equality.\n *\n * @param {string} str1\n * The first string to compare\n *\n * @param {string} str2\n * The second string to compare\n *\n * @return {boolean}\n * Whether the TitleCase versions of the strings are equal\n */\n\nvar titleCaseEquals = function titleCaseEquals(str1, str2) {\n return toTitleCase$1(str1) === toTitleCase$1(str2);\n};\n\n/**\n * @file merge-options.js\n * @module merge-options\n */\n/**\n * Merge two objects recursively.\n *\n * Performs a deep merge like\n * {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges\n * plain objects (not arrays, elements, or anything else).\n *\n * Non-plain object values will be copied directly from the right-most\n * argument.\n *\n * @static\n * @param {Object[]} sources\n * One or more objects to merge into a new object.\n *\n * @return {Object}\n * A new object that is the merged result of all sources.\n */\n\nfunction mergeOptions$3() {\n var result = {};\n\n for (var _len = arguments.length, sources = new Array(_len), _key = 0; _key < _len; _key++) {\n sources[_key] = arguments[_key];\n }\n\n sources.forEach(function (source) {\n if (!source) {\n return;\n }\n\n each(source, function (value, key) {\n if (!isPlain(value)) {\n result[key] = value;\n return;\n }\n\n if (!isPlain(result[key])) {\n result[key] = {};\n }\n\n result[key] = mergeOptions$3(result[key], value);\n });\n });\n return result;\n}\n\nvar MapSham = /*#__PURE__*/function () {\n function MapSham() {\n this.map_ = {};\n }\n\n var _proto = MapSham.prototype;\n\n _proto.has = function has(key) {\n return key in this.map_;\n };\n\n _proto[\"delete\"] = function _delete(key) {\n var has = this.has(key);\n delete this.map_[key];\n return has;\n };\n\n _proto.set = function set(key, value) {\n this.map_[key] = value;\n return this;\n };\n\n _proto.forEach = function forEach(callback, thisArg) {\n for (var key in this.map_) {\n callback.call(thisArg, this.map_[key], key, this);\n }\n };\n\n return MapSham;\n}();\n\nvar Map$1 = window$1.Map ? window$1.Map : MapSham;\n\nvar SetSham = /*#__PURE__*/function () {\n function SetSham() {\n this.set_ = {};\n }\n\n var _proto = SetSham.prototype;\n\n _proto.has = function has(key) {\n return key in this.set_;\n };\n\n _proto[\"delete\"] = function _delete(key) {\n var has = this.has(key);\n delete this.set_[key];\n return has;\n };\n\n _proto.add = function add(key) {\n this.set_[key] = 1;\n return this;\n };\n\n _proto.forEach = function forEach(callback, thisArg) {\n for (var key in this.set_) {\n callback.call(thisArg, key, key, this);\n }\n };\n\n return SetSham;\n}();\n\nvar Set$1 = window$1.Set ? window$1.Set : SetSham;\n\n/**\n * Player Component - Base class for all UI objects\n *\n * @file component.js\n */\n/**\n * Base class for all UI Components.\n * Components are UI objects which represent both a javascript object and an element\n * in the DOM. They can be children of other components, and can have\n * children themselves.\n *\n * Components can also use methods from {@link EventTarget}\n */\n\nvar Component$1 = /*#__PURE__*/function () {\n /**\n * A callback that is called when a component is ready. Does not have any\n * paramters and any callback value will be ignored.\n *\n * @callback Component~ReadyCallback\n * @this Component\n */\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of component options.\n *\n * @param {Object[]} [options.children]\n * An array of children objects to intialize this component with. Children objects have\n * a name property that will be used if more than one component of the same type needs to be\n * added.\n *\n * @param {string} [options.className]\n * A class or space separated list of classes to add the component\n *\n * @param {Component~ReadyCallback} [ready]\n * Function that gets called when the `Component` is ready.\n */\n function Component(player, options, ready) {\n var _this = this;\n\n // The component might be the player itself and we can't pass `this` to super\n if (!player && this.play) {\n this.player_ = player = this; // eslint-disable-line\n } else {\n this.player_ = player;\n }\n\n this.isDisposed_ = false; // Hold the reference to the parent component via `addChild` method\n\n this.parentComponent_ = null; // Make a copy of prototype.options_ to protect against overriding defaults\n\n this.options_ = mergeOptions$3({}, this.options_); // Updated options with supplied options\n\n options = this.options_ = mergeOptions$3(this.options_, options); // Get ID from options or options element if one is supplied\n\n this.id_ = options.id || options.el && options.el.id; // If there was no ID from the options, generate one\n\n if (!this.id_) {\n // Don't require the player ID function in the case of mock players\n var id = player && player.id && player.id() || 'no_player';\n this.id_ = id + \"_component_\" + newGUID();\n }\n\n this.name_ = options.name || null; // Create element if one wasn't provided in options\n\n if (options.el) {\n this.el_ = options.el;\n } else if (options.createEl !== false) {\n this.el_ = this.createEl();\n }\n\n if (options.className && this.el_) {\n options.className.split(' ').forEach(function (c) {\n return _this.addClass(c);\n });\n } // if evented is anything except false, we want to mixin in evented\n\n\n if (options.evented !== false) {\n // Make this an evented object and use `el_`, if available, as its event bus\n evented(this, {\n eventBusKey: this.el_ ? 'el_' : null\n });\n this.handleLanguagechange = this.handleLanguagechange.bind(this);\n this.on(this.player_, 'languagechange', this.handleLanguagechange);\n }\n\n stateful(this, this.constructor.defaultState);\n this.children_ = [];\n this.childIndex_ = {};\n this.childNameIndex_ = {};\n this.setTimeoutIds_ = new Set$1();\n this.setIntervalIds_ = new Set$1();\n this.rafIds_ = new Set$1();\n this.namedRafs_ = new Map$1();\n this.clearingTimersOnDispose_ = false; // Add any child components in options\n\n if (options.initChildren !== false) {\n this.initChildren();\n } // Don't want to trigger ready here or it will go before init is actually\n // finished for all children that run this constructor\n\n\n this.ready(ready);\n\n if (options.reportTouchActivity !== false) {\n this.enableTouchActivity();\n }\n }\n /**\n * Dispose of the `Component` and all child components.\n *\n * @fires Component#dispose\n *\n * @param {Object} options\n * @param {Element} options.originalEl element with which to replace player element\n */\n\n\n var _proto = Component.prototype;\n\n _proto.dispose = function dispose(options) {\n if (options === void 0) {\n options = {};\n }\n\n // Bail out if the component has already been disposed.\n if (this.isDisposed_) {\n return;\n }\n\n if (this.readyQueue_) {\n this.readyQueue_.length = 0;\n }\n /**\n * Triggered when a `Component` is disposed.\n *\n * @event Component#dispose\n * @type {EventTarget~Event}\n *\n * @property {boolean} [bubbles=false]\n * set to false so that the dispose event does not\n * bubble up\n */\n\n\n this.trigger({\n type: 'dispose',\n bubbles: false\n });\n this.isDisposed_ = true; // Dispose all children.\n\n if (this.children_) {\n for (var i = this.children_.length - 1; i >= 0; i--) {\n if (this.children_[i].dispose) {\n this.children_[i].dispose();\n }\n }\n } // Delete child references\n\n\n this.children_ = null;\n this.childIndex_ = null;\n this.childNameIndex_ = null;\n this.parentComponent_ = null;\n\n if (this.el_) {\n // Remove element from DOM\n if (this.el_.parentNode) {\n if (options.restoreEl) {\n this.el_.parentNode.replaceChild(options.restoreEl, this.el_);\n } else {\n this.el_.parentNode.removeChild(this.el_);\n }\n }\n\n this.el_ = null;\n } // remove reference to the player after disposing of the element\n\n\n this.player_ = null;\n }\n /**\n * Determine whether or not this component has been disposed.\n *\n * @return {boolean}\n * If the component has been disposed, will be `true`. Otherwise, `false`.\n */\n ;\n\n _proto.isDisposed = function isDisposed() {\n return Boolean(this.isDisposed_);\n }\n /**\n * Return the {@link Player} that the `Component` has attached to.\n *\n * @return {Player}\n * The player that this `Component` has attached to.\n */\n ;\n\n _proto.player = function player() {\n return this.player_;\n }\n /**\n * Deep merge of options objects with new options.\n * > Note: When both `obj` and `options` contain properties whose values are objects.\n * The two properties get merged using {@link module:mergeOptions}\n *\n * @param {Object} obj\n * The object that contains new options.\n *\n * @return {Object}\n * A new object of `this.options_` and `obj` merged together.\n */\n ;\n\n _proto.options = function options(obj) {\n if (!obj) {\n return this.options_;\n }\n\n this.options_ = mergeOptions$3(this.options_, obj);\n return this.options_;\n }\n /**\n * Get the `Component`s DOM element\n *\n * @return {Element}\n * The DOM element for this `Component`.\n */\n ;\n\n _proto.el = function el() {\n return this.el_;\n }\n /**\n * Create the `Component`s DOM element.\n *\n * @param {string} [tagName]\n * Element's DOM node type. e.g. 'div'\n *\n * @param {Object} [properties]\n * An object of properties that should be set.\n *\n * @param {Object} [attributes]\n * An object of attributes that should be set.\n *\n * @return {Element}\n * The element that gets created.\n */\n ;\n\n _proto.createEl = function createEl$1(tagName, properties, attributes) {\n return createEl(tagName, properties, attributes);\n }\n /**\n * Localize a string given the string in english.\n *\n * If tokens are provided, it'll try and run a simple token replacement on the provided string.\n * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array.\n *\n * If a `defaultValue` is provided, it'll use that over `string`,\n * if a value isn't found in provided language files.\n * This is useful if you want to have a descriptive key for token replacement\n * but have a succinct localized string and not require `en.json` to be included.\n *\n * Currently, it is used for the progress bar timing.\n * ```js\n * {\n * \"progress bar timing: currentTime={1} duration={2}\": \"{1} of {2}\"\n * }\n * ```\n * It is then used like so:\n * ```js\n * this.localize('progress bar timing: currentTime={1} duration{2}',\n * [this.player_.currentTime(), this.player_.duration()],\n * '{1} of {2}');\n * ```\n *\n * Which outputs something like: `01:23 of 24:56`.\n *\n *\n * @param {string} string\n * The string to localize and the key to lookup in the language files.\n * @param {string[]} [tokens]\n * If the current item has token replacements, provide the tokens here.\n * @param {string} [defaultValue]\n * Defaults to `string`. Can be a default value to use for token replacement\n * if the lookup key is needed to be separate.\n *\n * @return {string}\n * The localized string or if no localization exists the english string.\n */\n ;\n\n _proto.localize = function localize(string, tokens, defaultValue) {\n if (defaultValue === void 0) {\n defaultValue = string;\n }\n\n var code = this.player_.language && this.player_.language();\n var languages = this.player_.languages && this.player_.languages();\n var language = languages && languages[code];\n var primaryCode = code && code.split('-')[0];\n var primaryLang = languages && languages[primaryCode];\n var localizedString = defaultValue;\n\n if (language && language[string]) {\n localizedString = language[string];\n } else if (primaryLang && primaryLang[string]) {\n localizedString = primaryLang[string];\n }\n\n if (tokens) {\n localizedString = localizedString.replace(/\\{(\\d+)\\}/g, function (match, index) {\n var value = tokens[index - 1];\n var ret = value;\n\n if (typeof value === 'undefined') {\n ret = match;\n }\n\n return ret;\n });\n }\n\n return localizedString;\n }\n /**\n * Handles language change for the player in components. Should be overriden by sub-components.\n *\n * @abstract\n */\n ;\n\n _proto.handleLanguagechange = function handleLanguagechange() {}\n /**\n * Return the `Component`s DOM element. This is where children get inserted.\n * This will usually be the the same as the element returned in {@link Component#el}.\n *\n * @return {Element}\n * The content element for this `Component`.\n */\n ;\n\n _proto.contentEl = function contentEl() {\n return this.contentEl_ || this.el_;\n }\n /**\n * Get this `Component`s ID\n *\n * @return {string}\n * The id of this `Component`\n */\n ;\n\n _proto.id = function id() {\n return this.id_;\n }\n /**\n * Get the `Component`s name. The name gets used to reference the `Component`\n * and is set during registration.\n *\n * @return {string}\n * The name of this `Component`.\n */\n ;\n\n _proto.name = function name() {\n return this.name_;\n }\n /**\n * Get an array of all child components\n *\n * @return {Array}\n * The children\n */\n ;\n\n _proto.children = function children() {\n return this.children_;\n }\n /**\n * Returns the child `Component` with the given `id`.\n *\n * @param {string} id\n * The id of the child `Component` to get.\n *\n * @return {Component|undefined}\n * The child `Component` with the given `id` or undefined.\n */\n ;\n\n _proto.getChildById = function getChildById(id) {\n return this.childIndex_[id];\n }\n /**\n * Returns the child `Component` with the given `name`.\n *\n * @param {string} name\n * The name of the child `Component` to get.\n *\n * @return {Component|undefined}\n * The child `Component` with the given `name` or undefined.\n */\n ;\n\n _proto.getChild = function getChild(name) {\n if (!name) {\n return;\n }\n\n return this.childNameIndex_[name];\n }\n /**\n * Returns the descendant `Component` following the givent\n * descendant `names`. For instance ['foo', 'bar', 'baz'] would\n * try to get 'foo' on the current component, 'bar' on the 'foo'\n * component and 'baz' on the 'bar' component and return undefined\n * if any of those don't exist.\n *\n * @param {...string[]|...string} names\n * The name of the child `Component` to get.\n *\n * @return {Component|undefined}\n * The descendant `Component` following the given descendant\n * `names` or undefined.\n */\n ;\n\n _proto.getDescendant = function getDescendant() {\n for (var _len = arguments.length, names = new Array(_len), _key = 0; _key < _len; _key++) {\n names[_key] = arguments[_key];\n }\n\n // flatten array argument into the main array\n names = names.reduce(function (acc, n) {\n return acc.concat(n);\n }, []);\n var currentChild = this;\n\n for (var i = 0; i < names.length; i++) {\n currentChild = currentChild.getChild(names[i]);\n\n if (!currentChild || !currentChild.getChild) {\n return;\n }\n }\n\n return currentChild;\n }\n /**\n * Add a child `Component` inside the current `Component`.\n *\n *\n * @param {string|Component} child\n * The name or instance of a child to add.\n *\n * @param {Object} [options={}]\n * The key/value store of options that will get passed to children of\n * the child.\n *\n * @param {number} [index=this.children_.length]\n * The index to attempt to add a child into.\n *\n * @return {Component}\n * The `Component` that gets added as a child. When using a string the\n * `Component` will get created by this process.\n */\n ;\n\n _proto.addChild = function addChild(child, options, index) {\n if (options === void 0) {\n options = {};\n }\n\n if (index === void 0) {\n index = this.children_.length;\n }\n\n var component;\n var componentName; // If child is a string, create component with options\n\n if (typeof child === 'string') {\n componentName = toTitleCase$1(child);\n var componentClassName = options.componentClass || componentName; // Set name through options\n\n options.name = componentName; // Create a new object & element for this controls set\n // If there's no .player_, this is a player\n\n var ComponentClass = Component.getComponent(componentClassName);\n\n if (!ComponentClass) {\n throw new Error(\"Component \" + componentClassName + \" does not exist\");\n } // data stored directly on the videojs object may be\n // misidentified as a component to retain\n // backwards-compatibility with 4.x. check to make sure the\n // component class can be instantiated.\n\n\n if (typeof ComponentClass !== 'function') {\n return null;\n }\n\n component = new ComponentClass(this.player_ || this, options); // child is a component instance\n } else {\n component = child;\n }\n\n if (component.parentComponent_) {\n component.parentComponent_.removeChild(component);\n }\n\n this.children_.splice(index, 0, component);\n component.parentComponent_ = this;\n\n if (typeof component.id === 'function') {\n this.childIndex_[component.id()] = component;\n } // If a name wasn't used to create the component, check if we can use the\n // name function of the component\n\n\n componentName = componentName || component.name && toTitleCase$1(component.name());\n\n if (componentName) {\n this.childNameIndex_[componentName] = component;\n this.childNameIndex_[toLowerCase(componentName)] = component;\n } // Add the UI object's element to the container div (box)\n // Having an element is not required\n\n\n if (typeof component.el === 'function' && component.el()) {\n // If inserting before a component, insert before that component's element\n var refNode = null;\n\n if (this.children_[index + 1]) {\n // Most children are components, but the video tech is an HTML element\n if (this.children_[index + 1].el_) {\n refNode = this.children_[index + 1].el_;\n } else if (isEl(this.children_[index + 1])) {\n refNode = this.children_[index + 1];\n }\n }\n\n this.contentEl().insertBefore(component.el(), refNode);\n } // Return so it can stored on parent object if desired.\n\n\n return component;\n }\n /**\n * Remove a child `Component` from this `Component`s list of children. Also removes\n * the child `Component`s element from this `Component`s element.\n *\n * @param {Component} component\n * The child `Component` to remove.\n */\n ;\n\n _proto.removeChild = function removeChild(component) {\n if (typeof component === 'string') {\n component = this.getChild(component);\n }\n\n if (!component || !this.children_) {\n return;\n }\n\n var childFound = false;\n\n for (var i = this.children_.length - 1; i >= 0; i--) {\n if (this.children_[i] === component) {\n childFound = true;\n this.children_.splice(i, 1);\n break;\n }\n }\n\n if (!childFound) {\n return;\n }\n\n component.parentComponent_ = null;\n this.childIndex_[component.id()] = null;\n this.childNameIndex_[toTitleCase$1(component.name())] = null;\n this.childNameIndex_[toLowerCase(component.name())] = null;\n var compEl = component.el();\n\n if (compEl && compEl.parentNode === this.contentEl()) {\n this.contentEl().removeChild(component.el());\n }\n }\n /**\n * Add and initialize default child `Component`s based upon options.\n */\n ;\n\n _proto.initChildren = function initChildren() {\n var _this2 = this;\n\n var children = this.options_.children;\n\n if (children) {\n // `this` is `parent`\n var parentOptions = this.options_;\n\n var handleAdd = function handleAdd(child) {\n var name = child.name;\n var opts = child.opts; // Allow options for children to be set at the parent options\n // e.g. videojs(id, { controlBar: false });\n // instead of videojs(id, { children: { controlBar: false });\n\n if (parentOptions[name] !== undefined) {\n opts = parentOptions[name];\n } // Allow for disabling default components\n // e.g. options['children']['posterImage'] = false\n\n\n if (opts === false) {\n return;\n } // Allow options to be passed as a simple boolean if no configuration\n // is necessary.\n\n\n if (opts === true) {\n opts = {};\n } // We also want to pass the original player options\n // to each component as well so they don't need to\n // reach back into the player for options later.\n\n\n opts.playerOptions = _this2.options_.playerOptions; // Create and add the child component.\n // Add a direct reference to the child by name on the parent instance.\n // If two of the same component are used, different names should be supplied\n // for each\n\n var newChild = _this2.addChild(name, opts);\n\n if (newChild) {\n _this2[name] = newChild;\n }\n }; // Allow for an array of children details to passed in the options\n\n\n var workingChildren;\n var Tech = Component.getComponent('Tech');\n\n if (Array.isArray(children)) {\n workingChildren = children;\n } else {\n workingChildren = Object.keys(children);\n }\n\n workingChildren // children that are in this.options_ but also in workingChildren would\n // give us extra children we do not want. So, we want to filter them out.\n .concat(Object.keys(this.options_).filter(function (child) {\n return !workingChildren.some(function (wchild) {\n if (typeof wchild === 'string') {\n return child === wchild;\n }\n\n return child === wchild.name;\n });\n })).map(function (child) {\n var name;\n var opts;\n\n if (typeof child === 'string') {\n name = child;\n opts = children[name] || _this2.options_[name] || {};\n } else {\n name = child.name;\n opts = child;\n }\n\n return {\n name: name,\n opts: opts\n };\n }).filter(function (child) {\n // we have to make sure that child.name isn't in the techOrder since\n // techs are registerd as Components but can't aren't compatible\n // See https://github.com/videojs/video.js/issues/2772\n var c = Component.getComponent(child.opts.componentClass || toTitleCase$1(child.name));\n return c && !Tech.isTech(c);\n }).forEach(handleAdd);\n }\n }\n /**\n * Builds the default DOM class name. Should be overriden by sub-components.\n *\n * @return {string}\n * The DOM class name for this object.\n *\n * @abstract\n */\n ;\n\n _proto.buildCSSClass = function buildCSSClass() {\n // Child classes can include a function that does:\n // return 'CLASS NAME' + this._super();\n return '';\n }\n /**\n * Bind a listener to the component's ready state.\n * Different from event listeners in that if the ready event has already happened\n * it will trigger the function immediately.\n *\n * @return {Component}\n * Returns itself; method can be chained.\n */\n ;\n\n _proto.ready = function ready(fn, sync) {\n if (sync === void 0) {\n sync = false;\n }\n\n if (!fn) {\n return;\n }\n\n if (!this.isReady_) {\n this.readyQueue_ = this.readyQueue_ || [];\n this.readyQueue_.push(fn);\n return;\n }\n\n if (sync) {\n fn.call(this);\n } else {\n // Call the function asynchronously by default for consistency\n this.setTimeout(fn, 1);\n }\n }\n /**\n * Trigger all the ready listeners for this `Component`.\n *\n * @fires Component#ready\n */\n ;\n\n _proto.triggerReady = function triggerReady() {\n this.isReady_ = true; // Ensure ready is triggered asynchronously\n\n this.setTimeout(function () {\n var readyQueue = this.readyQueue_; // Reset Ready Queue\n\n this.readyQueue_ = [];\n\n if (readyQueue && readyQueue.length > 0) {\n readyQueue.forEach(function (fn) {\n fn.call(this);\n }, this);\n } // Allow for using event listeners also\n\n /**\n * Triggered when a `Component` is ready.\n *\n * @event Component#ready\n * @type {EventTarget~Event}\n */\n\n\n this.trigger('ready');\n }, 1);\n }\n /**\n * Find a single DOM element matching a `selector`. This can be within the `Component`s\n * `contentEl()` or another custom context.\n *\n * @param {string} selector\n * A valid CSS selector, which will be passed to `querySelector`.\n *\n * @param {Element|string} [context=this.contentEl()]\n * A DOM element within which to query. Can also be a selector string in\n * which case the first matching element will get used as context. If\n * missing `this.contentEl()` gets used. If `this.contentEl()` returns\n * nothing it falls back to `document`.\n *\n * @return {Element|null}\n * the dom element that was found, or null\n *\n * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n */\n ;\n\n _proto.$ = function $$1(selector, context) {\n return $(selector, context || this.contentEl());\n }\n /**\n * Finds all DOM element matching a `selector`. This can be within the `Component`s\n * `contentEl()` or another custom context.\n *\n * @param {string} selector\n * A valid CSS selector, which will be passed to `querySelectorAll`.\n *\n * @param {Element|string} [context=this.contentEl()]\n * A DOM element within which to query. Can also be a selector string in\n * which case the first matching element will get used as context. If\n * missing `this.contentEl()` gets used. If `this.contentEl()` returns\n * nothing it falls back to `document`.\n *\n * @return {NodeList}\n * a list of dom elements that were found\n *\n * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n */\n ;\n\n _proto.$$ = function $$$1(selector, context) {\n return $$(selector, context || this.contentEl());\n }\n /**\n * Check if a component's element has a CSS class name.\n *\n * @param {string} classToCheck\n * CSS class name to check.\n *\n * @return {boolean}\n * - True if the `Component` has the class.\n * - False if the `Component` does not have the class`\n */\n ;\n\n _proto.hasClass = function hasClass$1(classToCheck) {\n return hasClass(this.el_, classToCheck);\n }\n /**\n * Add a CSS class name to the `Component`s element.\n *\n * @param {string} classToAdd\n * CSS class name to add\n */\n ;\n\n _proto.addClass = function addClass$1(classToAdd) {\n addClass(this.el_, classToAdd);\n }\n /**\n * Remove a CSS class name from the `Component`s element.\n *\n * @param {string} classToRemove\n * CSS class name to remove\n */\n ;\n\n _proto.removeClass = function removeClass$1(classToRemove) {\n removeClass(this.el_, classToRemove);\n }\n /**\n * Add or remove a CSS class name from the component's element.\n * - `classToToggle` gets added when {@link Component#hasClass} would return false.\n * - `classToToggle` gets removed when {@link Component#hasClass} would return true.\n *\n * @param {string} classToToggle\n * The class to add or remove based on (@link Component#hasClass}\n *\n * @param {boolean|Dom~predicate} [predicate]\n * An {@link Dom~predicate} function or a boolean\n */\n ;\n\n _proto.toggleClass = function toggleClass$1(classToToggle, predicate) {\n toggleClass(this.el_, classToToggle, predicate);\n }\n /**\n * Show the `Component`s element if it is hidden by removing the\n * 'vjs-hidden' class name from it.\n */\n ;\n\n _proto.show = function show() {\n this.removeClass('vjs-hidden');\n }\n /**\n * Hide the `Component`s element if it is currently showing by adding the\n * 'vjs-hidden` class name to it.\n */\n ;\n\n _proto.hide = function hide() {\n this.addClass('vjs-hidden');\n }\n /**\n * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing'\n * class name to it. Used during fadeIn/fadeOut.\n *\n * @private\n */\n ;\n\n _proto.lockShowing = function lockShowing() {\n this.addClass('vjs-lock-showing');\n }\n /**\n * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing'\n * class name from it. Used during fadeIn/fadeOut.\n *\n * @private\n */\n ;\n\n _proto.unlockShowing = function unlockShowing() {\n this.removeClass('vjs-lock-showing');\n }\n /**\n * Get the value of an attribute on the `Component`s element.\n *\n * @param {string} attribute\n * Name of the attribute to get the value from.\n *\n * @return {string|null}\n * - The value of the attribute that was asked for.\n * - Can be an empty string on some browsers if the attribute does not exist\n * or has no value\n * - Most browsers will return null if the attibute does not exist or has\n * no value.\n *\n * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute}\n */\n ;\n\n _proto.getAttribute = function getAttribute$1(attribute) {\n return getAttribute(this.el_, attribute);\n }\n /**\n * Set the value of an attribute on the `Component`'s element\n *\n * @param {string} attribute\n * Name of the attribute to set.\n *\n * @param {string} value\n * Value to set the attribute to.\n *\n * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute}\n */\n ;\n\n _proto.setAttribute = function setAttribute$1(attribute, value) {\n setAttribute(this.el_, attribute, value);\n }\n /**\n * Remove an attribute from the `Component`s element.\n *\n * @param {string} attribute\n * Name of the attribute to remove.\n *\n * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute}\n */\n ;\n\n _proto.removeAttribute = function removeAttribute$1(attribute) {\n removeAttribute(this.el_, attribute);\n }\n /**\n * Get or set the width of the component based upon the CSS styles.\n * See {@link Component#dimension} for more detailed information.\n *\n * @param {number|string} [num]\n * The width that you want to set postfixed with '%', 'px' or nothing.\n *\n * @param {boolean} [skipListeners]\n * Skip the componentresize event trigger\n *\n * @return {number|string}\n * The width when getting, zero if there is no width. Can be a string\n * postpixed with '%' or 'px'.\n */\n ;\n\n _proto.width = function width(num, skipListeners) {\n return this.dimension('width', num, skipListeners);\n }\n /**\n * Get or set the height of the component based upon the CSS styles.\n * See {@link Component#dimension} for more detailed information.\n *\n * @param {number|string} [num]\n * The height that you want to set postfixed with '%', 'px' or nothing.\n *\n * @param {boolean} [skipListeners]\n * Skip the componentresize event trigger\n *\n * @return {number|string}\n * The width when getting, zero if there is no width. Can be a string\n * postpixed with '%' or 'px'.\n */\n ;\n\n _proto.height = function height(num, skipListeners) {\n return this.dimension('height', num, skipListeners);\n }\n /**\n * Set both the width and height of the `Component` element at the same time.\n *\n * @param {number|string} width\n * Width to set the `Component`s element to.\n *\n * @param {number|string} height\n * Height to set the `Component`s element to.\n */\n ;\n\n _proto.dimensions = function dimensions(width, height) {\n // Skip componentresize listeners on width for optimization\n this.width(width, true);\n this.height(height);\n }\n /**\n * Get or set width or height of the `Component` element. This is the shared code\n * for the {@link Component#width} and {@link Component#height}.\n *\n * Things to know:\n * - If the width or height in an number this will return the number postfixed with 'px'.\n * - If the width/height is a percent this will return the percent postfixed with '%'\n * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function\n * defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`.\n * See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/}\n * for more information\n * - If you want the computed style of the component, use {@link Component#currentWidth}\n * and {@link {Component#currentHeight}\n *\n * @fires Component#componentresize\n *\n * @param {string} widthOrHeight\n 8 'width' or 'height'\n *\n * @param {number|string} [num]\n 8 New dimension\n *\n * @param {boolean} [skipListeners]\n * Skip componentresize event trigger\n *\n * @return {number}\n * The dimension when getting or 0 if unset\n */\n ;\n\n _proto.dimension = function dimension(widthOrHeight, num, skipListeners) {\n if (num !== undefined) {\n // Set to zero if null or literally NaN (NaN !== NaN)\n if (num === null || num !== num) {\n num = 0;\n } // Check if using css width/height (% or px) and adjust\n\n\n if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) {\n this.el_.style[widthOrHeight] = num;\n } else if (num === 'auto') {\n this.el_.style[widthOrHeight] = '';\n } else {\n this.el_.style[widthOrHeight] = num + 'px';\n } // skipListeners allows us to avoid triggering the resize event when setting both width and height\n\n\n if (!skipListeners) {\n /**\n * Triggered when a component is resized.\n *\n * @event Component#componentresize\n * @type {EventTarget~Event}\n */\n this.trigger('componentresize');\n }\n\n return;\n } // Not setting a value, so getting it\n // Make sure element exists\n\n\n if (!this.el_) {\n return 0;\n } // Get dimension value from style\n\n\n var val = this.el_.style[widthOrHeight];\n var pxIndex = val.indexOf('px');\n\n if (pxIndex !== -1) {\n // Return the pixel value with no 'px'\n return parseInt(val.slice(0, pxIndex), 10);\n } // No px so using % or no style was set, so falling back to offsetWidth/height\n // If component has display:none, offset will return 0\n // TODO: handle display:none and no dimension style using px\n\n\n return parseInt(this.el_['offset' + toTitleCase$1(widthOrHeight)], 10);\n }\n /**\n * Get the computed width or the height of the component's element.\n *\n * Uses `window.getComputedStyle`.\n *\n * @param {string} widthOrHeight\n * A string containing 'width' or 'height'. Whichever one you want to get.\n *\n * @return {number}\n * The dimension that gets asked for or 0 if nothing was set\n * for that dimension.\n */\n ;\n\n _proto.currentDimension = function currentDimension(widthOrHeight) {\n var computedWidthOrHeight = 0;\n\n if (widthOrHeight !== 'width' && widthOrHeight !== 'height') {\n throw new Error('currentDimension only accepts width or height value');\n }\n\n computedWidthOrHeight = computedStyle(this.el_, widthOrHeight); // remove 'px' from variable and parse as integer\n\n computedWidthOrHeight = parseFloat(computedWidthOrHeight); // if the computed value is still 0, it's possible that the browser is lying\n // and we want to check the offset values.\n // This code also runs wherever getComputedStyle doesn't exist.\n\n if (computedWidthOrHeight === 0 || isNaN(computedWidthOrHeight)) {\n var rule = \"offset\" + toTitleCase$1(widthOrHeight);\n computedWidthOrHeight = this.el_[rule];\n }\n\n return computedWidthOrHeight;\n }\n /**\n * An object that contains width and height values of the `Component`s\n * computed style. Uses `window.getComputedStyle`.\n *\n * @typedef {Object} Component~DimensionObject\n *\n * @property {number} width\n * The width of the `Component`s computed style.\n *\n * @property {number} height\n * The height of the `Component`s computed style.\n */\n\n /**\n * Get an object that contains computed width and height values of the\n * component's element.\n *\n * Uses `window.getComputedStyle`.\n *\n * @return {Component~DimensionObject}\n * The computed dimensions of the component's element.\n */\n ;\n\n _proto.currentDimensions = function currentDimensions() {\n return {\n width: this.currentDimension('width'),\n height: this.currentDimension('height')\n };\n }\n /**\n * Get the computed width of the component's element.\n *\n * Uses `window.getComputedStyle`.\n *\n * @return {number}\n * The computed width of the component's element.\n */\n ;\n\n _proto.currentWidth = function currentWidth() {\n return this.currentDimension('width');\n }\n /**\n * Get the computed height of the component's element.\n *\n * Uses `window.getComputedStyle`.\n *\n * @return {number}\n * The computed height of the component's element.\n */\n ;\n\n _proto.currentHeight = function currentHeight() {\n return this.currentDimension('height');\n }\n /**\n * Set the focus to this component\n */\n ;\n\n _proto.focus = function focus() {\n this.el_.focus();\n }\n /**\n * Remove the focus from this component\n */\n ;\n\n _proto.blur = function blur() {\n this.el_.blur();\n }\n /**\n * When this Component receives a `keydown` event which it does not process,\n * it passes the event to the Player for handling.\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n if (this.player_) {\n // We only stop propagation here because we want unhandled events to fall\n // back to the browser. Exclude Tab for focus trapping.\n if (!keycode.isEventKey(event, 'Tab')) {\n event.stopPropagation();\n }\n\n this.player_.handleKeyDown(event);\n }\n }\n /**\n * Many components used to have a `handleKeyPress` method, which was poorly\n * named because it listened to a `keydown` event. This method name now\n * delegates to `handleKeyDown`. This means anyone calling `handleKeyPress`\n * will not see their method calls stop working.\n *\n * @param {EventTarget~Event} event\n * The event that caused this function to be called.\n */\n ;\n\n _proto.handleKeyPress = function handleKeyPress(event) {\n this.handleKeyDown(event);\n }\n /**\n * Emit a 'tap' events when touch event support gets detected. This gets used to\n * support toggling the controls through a tap on the video. They get enabled\n * because every sub-component would have extra overhead otherwise.\n *\n * @private\n * @fires Component#tap\n * @listens Component#touchstart\n * @listens Component#touchmove\n * @listens Component#touchleave\n * @listens Component#touchcancel\n * @listens Component#touchend\n */\n ;\n\n _proto.emitTapEvents = function emitTapEvents() {\n // Track the start time so we can determine how long the touch lasted\n var touchStart = 0;\n var firstTouch = null; // Maximum movement allowed during a touch event to still be considered a tap\n // Other popular libs use anywhere from 2 (hammer.js) to 15,\n // so 10 seems like a nice, round number.\n\n var tapMovementThreshold = 10; // The maximum length a touch can be while still being considered a tap\n\n var touchTimeThreshold = 200;\n var couldBeTap;\n this.on('touchstart', function (event) {\n // If more than one finger, don't consider treating this as a click\n if (event.touches.length === 1) {\n // Copy pageX/pageY from the object\n firstTouch = {\n pageX: event.touches[0].pageX,\n pageY: event.touches[0].pageY\n }; // Record start time so we can detect a tap vs. \"touch and hold\"\n\n touchStart = window$1.performance.now(); // Reset couldBeTap tracking\n\n couldBeTap = true;\n }\n });\n this.on('touchmove', function (event) {\n // If more than one finger, don't consider treating this as a click\n if (event.touches.length > 1) {\n couldBeTap = false;\n } else if (firstTouch) {\n // Some devices will throw touchmoves for all but the slightest of taps.\n // So, if we moved only a small distance, this could still be a tap\n var xdiff = event.touches[0].pageX - firstTouch.pageX;\n var ydiff = event.touches[0].pageY - firstTouch.pageY;\n var touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff);\n\n if (touchDistance > tapMovementThreshold) {\n couldBeTap = false;\n }\n }\n });\n\n var noTap = function noTap() {\n couldBeTap = false;\n }; // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s\n\n\n this.on('touchleave', noTap);\n this.on('touchcancel', noTap); // When the touch ends, measure how long it took and trigger the appropriate\n // event\n\n this.on('touchend', function (event) {\n firstTouch = null; // Proceed only if the touchmove/leave/cancel event didn't happen\n\n if (couldBeTap === true) {\n // Measure how long the touch lasted\n var touchTime = window$1.performance.now() - touchStart; // Make sure the touch was less than the threshold to be considered a tap\n\n if (touchTime < touchTimeThreshold) {\n // Don't let browser turn this into a click\n event.preventDefault();\n /**\n * Triggered when a `Component` is tapped.\n *\n * @event Component#tap\n * @type {EventTarget~Event}\n */\n\n this.trigger('tap'); // It may be good to copy the touchend event object and change the\n // type to tap, if the other event properties aren't exact after\n // Events.fixEvent runs (e.g. event.target)\n }\n }\n });\n }\n /**\n * This function reports user activity whenever touch events happen. This can get\n * turned off by any sub-components that wants touch events to act another way.\n *\n * Report user touch activity when touch events occur. User activity gets used to\n * determine when controls should show/hide. It is simple when it comes to mouse\n * events, because any mouse event should show the controls. So we capture mouse\n * events that bubble up to the player and report activity when that happens.\n * With touch events it isn't as easy as `touchstart` and `touchend` toggle player\n * controls. So touch events can't help us at the player level either.\n *\n * User activity gets checked asynchronously. So what could happen is a tap event\n * on the video turns the controls off. Then the `touchend` event bubbles up to\n * the player. Which, if it reported user activity, would turn the controls right\n * back on. We also don't want to completely block touch events from bubbling up.\n * Furthermore a `touchmove` event and anything other than a tap, should not turn\n * controls back on.\n *\n * @listens Component#touchstart\n * @listens Component#touchmove\n * @listens Component#touchend\n * @listens Component#touchcancel\n */\n ;\n\n _proto.enableTouchActivity = function enableTouchActivity() {\n // Don't continue if the root player doesn't support reporting user activity\n if (!this.player() || !this.player().reportUserActivity) {\n return;\n } // listener for reporting that the user is active\n\n\n var report = bind(this.player(), this.player().reportUserActivity);\n var touchHolding;\n this.on('touchstart', function () {\n report(); // For as long as the they are touching the device or have their mouse down,\n // we consider them active even if they're not moving their finger or mouse.\n // So we want to continue to update that they are active\n\n this.clearInterval(touchHolding); // report at the same interval as activityCheck\n\n touchHolding = this.setInterval(report, 250);\n });\n\n var touchEnd = function touchEnd(event) {\n report(); // stop the interval that maintains activity if the touch is holding\n\n this.clearInterval(touchHolding);\n };\n\n this.on('touchmove', report);\n this.on('touchend', touchEnd);\n this.on('touchcancel', touchEnd);\n }\n /**\n * A callback that has no parameters and is bound into `Component`s context.\n *\n * @callback Component~GenericCallback\n * @this Component\n */\n\n /**\n * Creates a function that runs after an `x` millisecond timeout. This function is a\n * wrapper around `window.setTimeout`. There are a few reasons to use this one\n * instead though:\n * 1. It gets cleared via {@link Component#clearTimeout} when\n * {@link Component#dispose} gets called.\n * 2. The function callback will gets turned into a {@link Component~GenericCallback}\n *\n * > Note: You can't use `window.clearTimeout` on the id returned by this function. This\n * will cause its dispose listener not to get cleaned up! Please use\n * {@link Component#clearTimeout} or {@link Component#dispose} instead.\n *\n * @param {Component~GenericCallback} fn\n * The function that will be run after `timeout`.\n *\n * @param {number} timeout\n * Timeout in milliseconds to delay before executing the specified function.\n *\n * @return {number}\n * Returns a timeout ID that gets used to identify the timeout. It can also\n * get used in {@link Component#clearTimeout} to clear the timeout that\n * was set.\n *\n * @listens Component#dispose\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout}\n */\n ;\n\n _proto.setTimeout = function setTimeout(fn, timeout) {\n var _this3 = this;\n\n // declare as variables so they are properly available in timeout function\n // eslint-disable-next-line\n var timeoutId;\n fn = bind(this, fn);\n this.clearTimersOnDispose_();\n timeoutId = window$1.setTimeout(function () {\n if (_this3.setTimeoutIds_.has(timeoutId)) {\n _this3.setTimeoutIds_[\"delete\"](timeoutId);\n }\n\n fn();\n }, timeout);\n this.setTimeoutIds_.add(timeoutId);\n return timeoutId;\n }\n /**\n * Clears a timeout that gets created via `window.setTimeout` or\n * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout}\n * use this function instead of `window.clearTimout`. If you don't your dispose\n * listener will not get cleaned up until {@link Component#dispose}!\n *\n * @param {number} timeoutId\n * The id of the timeout to clear. The return value of\n * {@link Component#setTimeout} or `window.setTimeout`.\n *\n * @return {number}\n * Returns the timeout id that was cleared.\n *\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout}\n */\n ;\n\n _proto.clearTimeout = function clearTimeout(timeoutId) {\n if (this.setTimeoutIds_.has(timeoutId)) {\n this.setTimeoutIds_[\"delete\"](timeoutId);\n window$1.clearTimeout(timeoutId);\n }\n\n return timeoutId;\n }\n /**\n * Creates a function that gets run every `x` milliseconds. This function is a wrapper\n * around `window.setInterval`. There are a few reasons to use this one instead though.\n * 1. It gets cleared via {@link Component#clearInterval} when\n * {@link Component#dispose} gets called.\n * 2. The function callback will be a {@link Component~GenericCallback}\n *\n * @param {Component~GenericCallback} fn\n * The function to run every `x` seconds.\n *\n * @param {number} interval\n * Execute the specified function every `x` milliseconds.\n *\n * @return {number}\n * Returns an id that can be used to identify the interval. It can also be be used in\n * {@link Component#clearInterval} to clear the interval.\n *\n * @listens Component#dispose\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval}\n */\n ;\n\n _proto.setInterval = function setInterval(fn, interval) {\n fn = bind(this, fn);\n this.clearTimersOnDispose_();\n var intervalId = window$1.setInterval(fn, interval);\n this.setIntervalIds_.add(intervalId);\n return intervalId;\n }\n /**\n * Clears an interval that gets created via `window.setInterval` or\n * {@link Component#setInterval}. If you set an inteval via {@link Component#setInterval}\n * use this function instead of `window.clearInterval`. If you don't your dispose\n * listener will not get cleaned up until {@link Component#dispose}!\n *\n * @param {number} intervalId\n * The id of the interval to clear. The return value of\n * {@link Component#setInterval} or `window.setInterval`.\n *\n * @return {number}\n * Returns the interval id that was cleared.\n *\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval}\n */\n ;\n\n _proto.clearInterval = function clearInterval(intervalId) {\n if (this.setIntervalIds_.has(intervalId)) {\n this.setIntervalIds_[\"delete\"](intervalId);\n window$1.clearInterval(intervalId);\n }\n\n return intervalId;\n }\n /**\n * Queues up a callback to be passed to requestAnimationFrame (rAF), but\n * with a few extra bonuses:\n *\n * - Supports browsers that do not support rAF by falling back to\n * {@link Component#setTimeout}.\n *\n * - The callback is turned into a {@link Component~GenericCallback} (i.e.\n * bound to the component).\n *\n * - Automatic cancellation of the rAF callback is handled if the component\n * is disposed before it is called.\n *\n * @param {Component~GenericCallback} fn\n * A function that will be bound to this component and executed just\n * before the browser's next repaint.\n *\n * @return {number}\n * Returns an rAF ID that gets used to identify the timeout. It can\n * also be used in {@link Component#cancelAnimationFrame} to cancel\n * the animation frame callback.\n *\n * @listens Component#dispose\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame}\n */\n ;\n\n _proto.requestAnimationFrame = function requestAnimationFrame(fn) {\n var _this4 = this;\n\n // Fall back to using a timer.\n if (!this.supportsRaf_) {\n return this.setTimeout(fn, 1000 / 60);\n }\n\n this.clearTimersOnDispose_(); // declare as variables so they are properly available in rAF function\n // eslint-disable-next-line\n\n var id;\n fn = bind(this, fn);\n id = window$1.requestAnimationFrame(function () {\n if (_this4.rafIds_.has(id)) {\n _this4.rafIds_[\"delete\"](id);\n }\n\n fn();\n });\n this.rafIds_.add(id);\n return id;\n }\n /**\n * Request an animation frame, but only one named animation\n * frame will be queued. Another will never be added until\n * the previous one finishes.\n *\n * @param {string} name\n * The name to give this requestAnimationFrame\n *\n * @param {Component~GenericCallback} fn\n * A function that will be bound to this component and executed just\n * before the browser's next repaint.\n */\n ;\n\n _proto.requestNamedAnimationFrame = function requestNamedAnimationFrame(name, fn) {\n var _this5 = this;\n\n if (this.namedRafs_.has(name)) {\n return;\n }\n\n this.clearTimersOnDispose_();\n fn = bind(this, fn);\n var id = this.requestAnimationFrame(function () {\n fn();\n\n if (_this5.namedRafs_.has(name)) {\n _this5.namedRafs_[\"delete\"](name);\n }\n });\n this.namedRafs_.set(name, id);\n return name;\n }\n /**\n * Cancels a current named animation frame if it exists.\n *\n * @param {string} name\n * The name of the requestAnimationFrame to cancel.\n */\n ;\n\n _proto.cancelNamedAnimationFrame = function cancelNamedAnimationFrame(name) {\n if (!this.namedRafs_.has(name)) {\n return;\n }\n\n this.cancelAnimationFrame(this.namedRafs_.get(name));\n this.namedRafs_[\"delete\"](name);\n }\n /**\n * Cancels a queued callback passed to {@link Component#requestAnimationFrame}\n * (rAF).\n *\n * If you queue an rAF callback via {@link Component#requestAnimationFrame},\n * use this function instead of `window.cancelAnimationFrame`. If you don't,\n * your dispose listener will not get cleaned up until {@link Component#dispose}!\n *\n * @param {number} id\n * The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}.\n *\n * @return {number}\n * Returns the rAF ID that was cleared.\n *\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame}\n */\n ;\n\n _proto.cancelAnimationFrame = function cancelAnimationFrame(id) {\n // Fall back to using a timer.\n if (!this.supportsRaf_) {\n return this.clearTimeout(id);\n }\n\n if (this.rafIds_.has(id)) {\n this.rafIds_[\"delete\"](id);\n window$1.cancelAnimationFrame(id);\n }\n\n return id;\n }\n /**\n * A function to setup `requestAnimationFrame`, `setTimeout`,\n * and `setInterval`, clearing on dispose.\n *\n * > Previously each timer added and removed dispose listeners on it's own.\n * For better performance it was decided to batch them all, and use `Set`s\n * to track outstanding timer ids.\n *\n * @private\n */\n ;\n\n _proto.clearTimersOnDispose_ = function clearTimersOnDispose_() {\n var _this6 = this;\n\n if (this.clearingTimersOnDispose_) {\n return;\n }\n\n this.clearingTimersOnDispose_ = true;\n this.one('dispose', function () {\n [['namedRafs_', 'cancelNamedAnimationFrame'], ['rafIds_', 'cancelAnimationFrame'], ['setTimeoutIds_', 'clearTimeout'], ['setIntervalIds_', 'clearInterval']].forEach(function (_ref) {\n var idName = _ref[0],\n cancelName = _ref[1];\n\n // for a `Set` key will actually be the value again\n // so forEach((val, val) =>` but for maps we want to use\n // the key.\n _this6[idName].forEach(function (val, key) {\n return _this6[cancelName](key);\n });\n });\n _this6.clearingTimersOnDispose_ = false;\n });\n }\n /**\n * Register a `Component` with `videojs` given the name and the component.\n *\n * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s\n * should be registered using {@link Tech.registerTech} or\n * {@link videojs:videojs.registerTech}.\n *\n * > NOTE: This function can also be seen on videojs as\n * {@link videojs:videojs.registerComponent}.\n *\n * @param {string} name\n * The name of the `Component` to register.\n *\n * @param {Component} ComponentToRegister\n * The `Component` class to register.\n *\n * @return {Component}\n * The `Component` that was registered.\n */\n ;\n\n Component.registerComponent = function registerComponent(name, ComponentToRegister) {\n if (typeof name !== 'string' || !name) {\n throw new Error(\"Illegal component name, \\\"\" + name + \"\\\"; must be a non-empty string.\");\n }\n\n var Tech = Component.getComponent('Tech'); // We need to make sure this check is only done if Tech has been registered.\n\n var isTech = Tech && Tech.isTech(ComponentToRegister);\n var isComp = Component === ComponentToRegister || Component.prototype.isPrototypeOf(ComponentToRegister.prototype);\n\n if (isTech || !isComp) {\n var reason;\n\n if (isTech) {\n reason = 'techs must be registered using Tech.registerTech()';\n } else {\n reason = 'must be a Component subclass';\n }\n\n throw new Error(\"Illegal component, \\\"\" + name + \"\\\"; \" + reason + \".\");\n }\n\n name = toTitleCase$1(name);\n\n if (!Component.components_) {\n Component.components_ = {};\n }\n\n var Player = Component.getComponent('Player');\n\n if (name === 'Player' && Player && Player.players) {\n var players = Player.players;\n var playerNames = Object.keys(players); // If we have players that were disposed, then their name will still be\n // in Players.players. So, we must loop through and verify that the value\n // for each item is not null. This allows registration of the Player component\n // after all players have been disposed or before any were created.\n\n if (players && playerNames.length > 0 && playerNames.map(function (pname) {\n return players[pname];\n }).every(Boolean)) {\n throw new Error('Can not register Player component after player has been created.');\n }\n }\n\n Component.components_[name] = ComponentToRegister;\n Component.components_[toLowerCase(name)] = ComponentToRegister;\n return ComponentToRegister;\n }\n /**\n * Get a `Component` based on the name it was registered with.\n *\n * @param {string} name\n * The Name of the component to get.\n *\n * @return {Component}\n * The `Component` that got registered under the given name.\n */\n ;\n\n Component.getComponent = function getComponent(name) {\n if (!name || !Component.components_) {\n return;\n }\n\n return Component.components_[name];\n };\n\n return Component;\n}();\n/**\n * Whether or not this component supports `requestAnimationFrame`.\n *\n * This is exposed primarily for testing purposes.\n *\n * @private\n * @type {Boolean}\n */\n\n\nComponent$1.prototype.supportsRaf_ = typeof window$1.requestAnimationFrame === 'function' && typeof window$1.cancelAnimationFrame === 'function';\nComponent$1.registerComponent('Component', Component$1);\n\n/**\n * @file time-ranges.js\n * @module time-ranges\n */\n/**\n * Returns the time for the specified index at the start or end\n * of a TimeRange object.\n *\n * @typedef {Function} TimeRangeIndex\n *\n * @param {number} [index=0]\n * The range number to return the time for.\n *\n * @return {number}\n * The time offset at the specified index.\n *\n * @deprecated The index argument must be provided.\n * In the future, leaving it out will throw an error.\n */\n\n/**\n * An object that contains ranges of time.\n *\n * @typedef {Object} TimeRange\n *\n * @property {number} length\n * The number of time ranges represented by this object.\n *\n * @property {module:time-ranges~TimeRangeIndex} start\n * Returns the time offset at which a specified time range begins.\n *\n * @property {module:time-ranges~TimeRangeIndex} end\n * Returns the time offset at which a specified time range ends.\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges\n */\n\n/**\n * Check if any of the time ranges are over the maximum index.\n *\n * @private\n * @param {string} fnName\n * The function name to use for logging\n *\n * @param {number} index\n * The index to check\n *\n * @param {number} maxIndex\n * The maximum possible index\n *\n * @throws {Error} if the timeRanges provided are over the maxIndex\n */\n\nfunction rangeCheck(fnName, index, maxIndex) {\n if (typeof index !== 'number' || index < 0 || index > maxIndex) {\n throw new Error(\"Failed to execute '\" + fnName + \"' on 'TimeRanges': The index provided (\" + index + \") is non-numeric or out of bounds (0-\" + maxIndex + \").\");\n }\n}\n/**\n * Get the time for the specified index at the start or end\n * of a TimeRange object.\n *\n * @private\n * @param {string} fnName\n * The function name to use for logging\n *\n * @param {string} valueIndex\n * The property that should be used to get the time. should be\n * 'start' or 'end'\n *\n * @param {Array} ranges\n * An array of time ranges\n *\n * @param {Array} [rangeIndex=0]\n * The index to start the search at\n *\n * @return {number}\n * The time that offset at the specified index.\n *\n * @deprecated rangeIndex must be set to a value, in the future this will throw an error.\n * @throws {Error} if rangeIndex is more than the length of ranges\n */\n\n\nfunction getRange(fnName, valueIndex, ranges, rangeIndex) {\n rangeCheck(fnName, rangeIndex, ranges.length - 1);\n return ranges[rangeIndex][valueIndex];\n}\n/**\n * Create a time range object given ranges of time.\n *\n * @private\n * @param {Array} [ranges]\n * An array of time ranges.\n */\n\n\nfunction createTimeRangesObj(ranges) {\n var timeRangesObj;\n\n if (ranges === undefined || ranges.length === 0) {\n timeRangesObj = {\n length: 0,\n start: function start() {\n throw new Error('This TimeRanges object is empty');\n },\n end: function end() {\n throw new Error('This TimeRanges object is empty');\n }\n };\n } else {\n timeRangesObj = {\n length: ranges.length,\n start: getRange.bind(null, 'start', 0, ranges),\n end: getRange.bind(null, 'end', 1, ranges)\n };\n }\n\n if (window$1.Symbol && window$1.Symbol.iterator) {\n timeRangesObj[window$1.Symbol.iterator] = function () {\n return (ranges || []).values();\n };\n }\n\n return timeRangesObj;\n}\n/**\n * Create a `TimeRange` object which mimics an\n * {@link https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges|HTML5 TimeRanges instance}.\n *\n * @param {number|Array[]} start\n * The start of a single range (a number) or an array of ranges (an\n * array of arrays of two numbers each).\n *\n * @param {number} end\n * The end of a single range. Cannot be used with the array form of\n * the `start` argument.\n */\n\n\nfunction createTimeRanges(start, end) {\n if (Array.isArray(start)) {\n return createTimeRangesObj(start);\n } else if (start === undefined || end === undefined) {\n return createTimeRangesObj();\n }\n\n return createTimeRangesObj([[start, end]]);\n}\n\n/**\n * @file buffer.js\n * @module buffer\n */\n/**\n * Compute the percentage of the media that has been buffered.\n *\n * @param {TimeRange} buffered\n * The current `TimeRange` object representing buffered time ranges\n *\n * @param {number} duration\n * Total duration of the media\n *\n * @return {number}\n * Percent buffered of the total duration in decimal form.\n */\n\nfunction bufferedPercent(buffered, duration) {\n var bufferedDuration = 0;\n var start;\n var end;\n\n if (!duration) {\n return 0;\n }\n\n if (!buffered || !buffered.length) {\n buffered = createTimeRanges(0, 0);\n }\n\n for (var i = 0; i < buffered.length; i++) {\n start = buffered.start(i);\n end = buffered.end(i); // buffered end can be bigger than duration by a very small fraction\n\n if (end > duration) {\n end = duration;\n }\n\n bufferedDuration += end - start;\n }\n\n return bufferedDuration / duration;\n}\n\n/**\n * @file media-error.js\n */\n/**\n * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class.\n *\n * @param {number|string|Object|MediaError} value\n * This can be of multiple types:\n * - number: should be a standard error code\n * - string: an error message (the code will be 0)\n * - Object: arbitrary properties\n * - `MediaError` (native): used to populate a video.js `MediaError` object\n * - `MediaError` (video.js): will return itself if it's already a\n * video.js `MediaError` object.\n *\n * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror}\n * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes}\n *\n * @class MediaError\n */\n\nfunction MediaError(value) {\n // Allow redundant calls to this constructor to avoid having `instanceof`\n // checks peppered around the code.\n if (value instanceof MediaError) {\n return value;\n }\n\n if (typeof value === 'number') {\n this.code = value;\n } else if (typeof value === 'string') {\n // default code is zero, so this is a custom error\n this.message = value;\n } else if (isObject(value)) {\n // We assign the `code` property manually because native `MediaError` objects\n // do not expose it as an own/enumerable property of the object.\n if (typeof value.code === 'number') {\n this.code = value.code;\n }\n\n assign(this, value);\n }\n\n if (!this.message) {\n this.message = MediaError.defaultMessages[this.code] || '';\n }\n}\n/**\n * The error code that refers two one of the defined `MediaError` types\n *\n * @type {Number}\n */\n\n\nMediaError.prototype.code = 0;\n/**\n * An optional message that to show with the error. Message is not part of the HTML5\n * video spec but allows for more informative custom errors.\n *\n * @type {String}\n */\n\nMediaError.prototype.message = '';\n/**\n * An optional status code that can be set by plugins to allow even more detail about\n * the error. For example a plugin might provide a specific HTTP status code and an\n * error message for that code. Then when the plugin gets that error this class will\n * know how to display an error message for it. This allows a custom message to show\n * up on the `Player` error overlay.\n *\n * @type {Array}\n */\n\nMediaError.prototype.status = null;\n/**\n * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the\n * specification listed under {@link MediaError} for more information.\n *\n * @enum {array}\n * @readonly\n * @property {string} 0 - MEDIA_ERR_CUSTOM\n * @property {string} 1 - MEDIA_ERR_ABORTED\n * @property {string} 2 - MEDIA_ERR_NETWORK\n * @property {string} 3 - MEDIA_ERR_DECODE\n * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED\n * @property {string} 5 - MEDIA_ERR_ENCRYPTED\n */\n\nMediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED'];\n/**\n * The default `MediaError` messages based on the {@link MediaError.errorTypes}.\n *\n * @type {Array}\n * @constant\n */\n\nMediaError.defaultMessages = {\n 1: 'You aborted the media playback',\n 2: 'A network error caused the media download to fail part-way.',\n 3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.',\n 4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.',\n 5: 'The media is encrypted and we do not have the keys to decrypt it.'\n}; // Add types as properties on MediaError\n// e.g. MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;\n\nfor (var errNum = 0; errNum < MediaError.errorTypes.length; errNum++) {\n MediaError[MediaError.errorTypes[errNum]] = errNum; // values should be accessible on both the class and instance\n\n MediaError.prototype[MediaError.errorTypes[errNum]] = errNum;\n} // jsdocs for instance/static members added above\n\n/**\n * Returns whether an object is `Promise`-like (i.e. has a `then` method).\n *\n * @param {Object} value\n * An object that may or may not be `Promise`-like.\n *\n * @return {boolean}\n * Whether or not the object is `Promise`-like.\n */\nfunction isPromise(value) {\n return value !== undefined && value !== null && typeof value.then === 'function';\n}\n/**\n * Silence a Promise-like object.\n *\n * This is useful for avoiding non-harmful, but potentially confusing \"uncaught\n * play promise\" rejection error messages.\n *\n * @param {Object} value\n * An object that may or may not be `Promise`-like.\n */\n\nfunction silencePromise(value) {\n if (isPromise(value)) {\n value.then(null, function (e) {});\n }\n}\n\n/**\n * @file text-track-list-converter.js Utilities for capturing text track state and\n * re-creating tracks based on a capture.\n *\n * @module text-track-list-converter\n */\n\n/**\n * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that\n * represents the {@link TextTrack}'s state.\n *\n * @param {TextTrack} track\n * The text track to query.\n *\n * @return {Object}\n * A serializable javascript representation of the TextTrack.\n * @private\n */\nvar trackToJson_ = function trackToJson_(track) {\n var ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce(function (acc, prop, i) {\n if (track[prop]) {\n acc[prop] = track[prop];\n }\n\n return acc;\n }, {\n cues: track.cues && Array.prototype.map.call(track.cues, function (cue) {\n return {\n startTime: cue.startTime,\n endTime: cue.endTime,\n text: cue.text,\n id: cue.id\n };\n })\n });\n return ret;\n};\n/**\n * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the\n * state of all {@link TextTrack}s currently configured. The return array is compatible with\n * {@link text-track-list-converter:jsonToTextTracks}.\n *\n * @param {Tech} tech\n * The tech object to query\n *\n * @return {Array}\n * A serializable javascript representation of the {@link Tech}s\n * {@link TextTrackList}.\n */\n\n\nvar textTracksToJson = function textTracksToJson(tech) {\n var trackEls = tech.$$('track');\n var trackObjs = Array.prototype.map.call(trackEls, function (t) {\n return t.track;\n });\n var tracks = Array.prototype.map.call(trackEls, function (trackEl) {\n var json = trackToJson_(trackEl.track);\n\n if (trackEl.src) {\n json.src = trackEl.src;\n }\n\n return json;\n });\n return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) {\n return trackObjs.indexOf(track) === -1;\n }).map(trackToJson_));\n};\n/**\n * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript\n * object {@link TextTrack} representations.\n *\n * @param {Array} json\n * An array of `TextTrack` representation objects, like those that would be\n * produced by `textTracksToJson`.\n *\n * @param {Tech} tech\n * The `Tech` to create the `TextTrack`s on.\n */\n\n\nvar jsonToTextTracks = function jsonToTextTracks(json, tech) {\n json.forEach(function (track) {\n var addedTrack = tech.addRemoteTextTrack(track).track;\n\n if (!track.src && track.cues) {\n track.cues.forEach(function (cue) {\n return addedTrack.addCue(cue);\n });\n }\n });\n return tech.textTracks();\n};\n\nvar textTrackConverter = {\n textTracksToJson: textTracksToJson,\n jsonToTextTracks: jsonToTextTracks,\n trackToJson_: trackToJson_\n};\n\nvar MODAL_CLASS_NAME = 'vjs-modal-dialog';\n/**\n * The `ModalDialog` displays over the video and its controls, which blocks\n * interaction with the player until it is closed.\n *\n * Modal dialogs include a \"Close\" button and will close when that button\n * is activated - or when ESC is pressed anywhere.\n *\n * @extends Component\n */\n\nvar ModalDialog = /*#__PURE__*/function (_Component) {\n _inheritsLoose(ModalDialog, _Component);\n\n /**\n * Create an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Mixed} [options.content=undefined]\n * Provide customized content for this modal.\n *\n * @param {string} [options.description]\n * A text description for the modal, primarily for accessibility.\n *\n * @param {boolean} [options.fillAlways=false]\n * Normally, modals are automatically filled only the first time\n * they open. This tells the modal to refresh its content\n * every time it opens.\n *\n * @param {string} [options.label]\n * A text label for the modal, primarily for accessibility.\n *\n * @param {boolean} [options.pauseOnOpen=true]\n * If `true`, playback will will be paused if playing when\n * the modal opens, and resumed when it closes.\n *\n * @param {boolean} [options.temporary=true]\n * If `true`, the modal can only be opened once; it will be\n * disposed as soon as it's closed.\n *\n * @param {boolean} [options.uncloseable=false]\n * If `true`, the user will not be able to close the modal\n * through the UI in the normal ways. Programmatic closing is\n * still possible.\n */\n function ModalDialog(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n\n _this.handleKeyDown_ = function (e) {\n return _this.handleKeyDown(e);\n };\n\n _this.close_ = function (e) {\n return _this.close(e);\n };\n\n _this.opened_ = _this.hasBeenOpened_ = _this.hasBeenFilled_ = false;\n\n _this.closeable(!_this.options_.uncloseable);\n\n _this.content(_this.options_.content); // Make sure the contentEl is defined AFTER any children are initialized\n // because we only want the contents of the modal in the contentEl\n // (not the UI elements like the close button).\n\n\n _this.contentEl_ = createEl('div', {\n className: MODAL_CLASS_NAME + \"-content\"\n }, {\n role: 'document'\n });\n _this.descEl_ = createEl('p', {\n className: MODAL_CLASS_NAME + \"-description vjs-control-text\",\n id: _this.el().getAttribute('aria-describedby')\n });\n textContent(_this.descEl_, _this.description());\n\n _this.el_.appendChild(_this.descEl_);\n\n _this.el_.appendChild(_this.contentEl_);\n\n return _this;\n }\n /**\n * Create the `ModalDialog`'s DOM element\n *\n * @return {Element}\n * The DOM element that gets created.\n */\n\n\n var _proto = ModalDialog.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: this.buildCSSClass(),\n tabIndex: -1\n }, {\n 'aria-describedby': this.id() + \"_description\",\n 'aria-hidden': 'true',\n 'aria-label': this.label(),\n 'role': 'dialog'\n });\n };\n\n _proto.dispose = function dispose() {\n this.contentEl_ = null;\n this.descEl_ = null;\n this.previouslyActiveEl_ = null;\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n ;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return MODAL_CLASS_NAME + \" vjs-hidden \" + _Component.prototype.buildCSSClass.call(this);\n }\n /**\n * Returns the label string for this modal. Primarily used for accessibility.\n *\n * @return {string}\n * the localized or raw label of this modal.\n */\n ;\n\n _proto.label = function label() {\n return this.localize(this.options_.label || 'Modal Window');\n }\n /**\n * Returns the description string for this modal. Primarily used for\n * accessibility.\n *\n * @return {string}\n * The localized or raw description of this modal.\n */\n ;\n\n _proto.description = function description() {\n var desc = this.options_.description || this.localize('This is a modal window.'); // Append a universal closeability message if the modal is closeable.\n\n if (this.closeable()) {\n desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.');\n }\n\n return desc;\n }\n /**\n * Opens the modal.\n *\n * @fires ModalDialog#beforemodalopen\n * @fires ModalDialog#modalopen\n */\n ;\n\n _proto.open = function open() {\n if (!this.opened_) {\n var player = this.player();\n /**\n * Fired just before a `ModalDialog` is opened.\n *\n * @event ModalDialog#beforemodalopen\n * @type {EventTarget~Event}\n */\n\n this.trigger('beforemodalopen');\n this.opened_ = true; // Fill content if the modal has never opened before and\n // never been filled.\n\n if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) {\n this.fill();\n } // If the player was playing, pause it and take note of its previously\n // playing state.\n\n\n this.wasPlaying_ = !player.paused();\n\n if (this.options_.pauseOnOpen && this.wasPlaying_) {\n player.pause();\n }\n\n this.on('keydown', this.handleKeyDown_); // Hide controls and note if they were enabled.\n\n this.hadControls_ = player.controls();\n player.controls(false);\n this.show();\n this.conditionalFocus_();\n this.el().setAttribute('aria-hidden', 'false');\n /**\n * Fired just after a `ModalDialog` is opened.\n *\n * @event ModalDialog#modalopen\n * @type {EventTarget~Event}\n */\n\n this.trigger('modalopen');\n this.hasBeenOpened_ = true;\n }\n }\n /**\n * If the `ModalDialog` is currently open or closed.\n *\n * @param {boolean} [value]\n * If given, it will open (`true`) or close (`false`) the modal.\n *\n * @return {boolean}\n * the current open state of the modaldialog\n */\n ;\n\n _proto.opened = function opened(value) {\n if (typeof value === 'boolean') {\n this[value ? 'open' : 'close']();\n }\n\n return this.opened_;\n }\n /**\n * Closes the modal, does nothing if the `ModalDialog` is\n * not open.\n *\n * @fires ModalDialog#beforemodalclose\n * @fires ModalDialog#modalclose\n */\n ;\n\n _proto.close = function close() {\n if (!this.opened_) {\n return;\n }\n\n var player = this.player();\n /**\n * Fired just before a `ModalDialog` is closed.\n *\n * @event ModalDialog#beforemodalclose\n * @type {EventTarget~Event}\n */\n\n this.trigger('beforemodalclose');\n this.opened_ = false;\n\n if (this.wasPlaying_ && this.options_.pauseOnOpen) {\n player.play();\n }\n\n this.off('keydown', this.handleKeyDown_);\n\n if (this.hadControls_) {\n player.controls(true);\n }\n\n this.hide();\n this.el().setAttribute('aria-hidden', 'true');\n /**\n * Fired just after a `ModalDialog` is closed.\n *\n * @event ModalDialog#modalclose\n * @type {EventTarget~Event}\n */\n\n this.trigger('modalclose');\n this.conditionalBlur_();\n\n if (this.options_.temporary) {\n this.dispose();\n }\n }\n /**\n * Check to see if the `ModalDialog` is closeable via the UI.\n *\n * @param {boolean} [value]\n * If given as a boolean, it will set the `closeable` option.\n *\n * @return {boolean}\n * Returns the final value of the closable option.\n */\n ;\n\n _proto.closeable = function closeable(value) {\n if (typeof value === 'boolean') {\n var closeable = this.closeable_ = !!value;\n var close = this.getChild('closeButton'); // If this is being made closeable and has no close button, add one.\n\n if (closeable && !close) {\n // The close button should be a child of the modal - not its\n // content element, so temporarily change the content element.\n var temp = this.contentEl_;\n this.contentEl_ = this.el_;\n close = this.addChild('closeButton', {\n controlText: 'Close Modal Dialog'\n });\n this.contentEl_ = temp;\n this.on(close, 'close', this.close_);\n } // If this is being made uncloseable and has a close button, remove it.\n\n\n if (!closeable && close) {\n this.off(close, 'close', this.close_);\n this.removeChild(close);\n close.dispose();\n }\n }\n\n return this.closeable_;\n }\n /**\n * Fill the modal's content element with the modal's \"content\" option.\n * The content element will be emptied before this change takes place.\n */\n ;\n\n _proto.fill = function fill() {\n this.fillWith(this.content());\n }\n /**\n * Fill the modal's content element with arbitrary content.\n * The content element will be emptied before this change takes place.\n *\n * @fires ModalDialog#beforemodalfill\n * @fires ModalDialog#modalfill\n *\n * @param {Mixed} [content]\n * The same rules apply to this as apply to the `content` option.\n */\n ;\n\n _proto.fillWith = function fillWith(content) {\n var contentEl = this.contentEl();\n var parentEl = contentEl.parentNode;\n var nextSiblingEl = contentEl.nextSibling;\n /**\n * Fired just before a `ModalDialog` is filled with content.\n *\n * @event ModalDialog#beforemodalfill\n * @type {EventTarget~Event}\n */\n\n this.trigger('beforemodalfill');\n this.hasBeenFilled_ = true; // Detach the content element from the DOM before performing\n // manipulation to avoid modifying the live DOM multiple times.\n\n parentEl.removeChild(contentEl);\n this.empty();\n insertContent(contentEl, content);\n /**\n * Fired just after a `ModalDialog` is filled with content.\n *\n * @event ModalDialog#modalfill\n * @type {EventTarget~Event}\n */\n\n this.trigger('modalfill'); // Re-inject the re-filled content element.\n\n if (nextSiblingEl) {\n parentEl.insertBefore(contentEl, nextSiblingEl);\n } else {\n parentEl.appendChild(contentEl);\n } // make sure that the close button is last in the dialog DOM\n\n\n var closeButton = this.getChild('closeButton');\n\n if (closeButton) {\n parentEl.appendChild(closeButton.el_);\n }\n }\n /**\n * Empties the content element. This happens anytime the modal is filled.\n *\n * @fires ModalDialog#beforemodalempty\n * @fires ModalDialog#modalempty\n */\n ;\n\n _proto.empty = function empty() {\n /**\n * Fired just before a `ModalDialog` is emptied.\n *\n * @event ModalDialog#beforemodalempty\n * @type {EventTarget~Event}\n */\n this.trigger('beforemodalempty');\n emptyEl(this.contentEl());\n /**\n * Fired just after a `ModalDialog` is emptied.\n *\n * @event ModalDialog#modalempty\n * @type {EventTarget~Event}\n */\n\n this.trigger('modalempty');\n }\n /**\n * Gets or sets the modal content, which gets normalized before being\n * rendered into the DOM.\n *\n * This does not update the DOM or fill the modal, but it is called during\n * that process.\n *\n * @param {Mixed} [value]\n * If defined, sets the internal content value to be used on the\n * next call(s) to `fill`. This value is normalized before being\n * inserted. To \"clear\" the internal content value, pass `null`.\n *\n * @return {Mixed}\n * The current content of the modal dialog\n */\n ;\n\n _proto.content = function content(value) {\n if (typeof value !== 'undefined') {\n this.content_ = value;\n }\n\n return this.content_;\n }\n /**\n * conditionally focus the modal dialog if focus was previously on the player.\n *\n * @private\n */\n ;\n\n _proto.conditionalFocus_ = function conditionalFocus_() {\n var activeEl = document.activeElement;\n var playerEl = this.player_.el_;\n this.previouslyActiveEl_ = null;\n\n if (playerEl.contains(activeEl) || playerEl === activeEl) {\n this.previouslyActiveEl_ = activeEl;\n this.focus();\n }\n }\n /**\n * conditionally blur the element and refocus the last focused element\n *\n * @private\n */\n ;\n\n _proto.conditionalBlur_ = function conditionalBlur_() {\n if (this.previouslyActiveEl_) {\n this.previouslyActiveEl_.focus();\n this.previouslyActiveEl_ = null;\n }\n }\n /**\n * Keydown handler. Attached when modal is focused.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n // Do not allow keydowns to reach out of the modal dialog.\n event.stopPropagation();\n\n if (keycode.isEventKey(event, 'Escape') && this.closeable()) {\n event.preventDefault();\n this.close();\n return;\n } // exit early if it isn't a tab key\n\n\n if (!keycode.isEventKey(event, 'Tab')) {\n return;\n }\n\n var focusableEls = this.focusableEls_();\n var activeEl = this.el_.querySelector(':focus');\n var focusIndex;\n\n for (var i = 0; i < focusableEls.length; i++) {\n if (activeEl === focusableEls[i]) {\n focusIndex = i;\n break;\n }\n }\n\n if (document.activeElement === this.el_) {\n focusIndex = 0;\n }\n\n if (event.shiftKey && focusIndex === 0) {\n focusableEls[focusableEls.length - 1].focus();\n event.preventDefault();\n } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) {\n focusableEls[0].focus();\n event.preventDefault();\n }\n }\n /**\n * get all focusable elements\n *\n * @private\n */\n ;\n\n _proto.focusableEls_ = function focusableEls_() {\n var allChildren = this.el_.querySelectorAll('*');\n return Array.prototype.filter.call(allChildren, function (child) {\n return (child instanceof window$1.HTMLAnchorElement || child instanceof window$1.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window$1.HTMLInputElement || child instanceof window$1.HTMLSelectElement || child instanceof window$1.HTMLTextAreaElement || child instanceof window$1.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window$1.HTMLIFrameElement || child instanceof window$1.HTMLObjectElement || child instanceof window$1.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable');\n });\n };\n\n return ModalDialog;\n}(Component$1);\n/**\n * Default options for `ModalDialog` default options.\n *\n * @type {Object}\n * @private\n */\n\n\nModalDialog.prototype.options_ = {\n pauseOnOpen: true,\n temporary: true\n};\nComponent$1.registerComponent('ModalDialog', ModalDialog);\n\n/**\n * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and\n * {@link VideoTrackList}\n *\n * @extends EventTarget\n */\n\nvar TrackList = /*#__PURE__*/function (_EventTarget) {\n _inheritsLoose(TrackList, _EventTarget);\n\n /**\n * Create an instance of this class\n *\n * @param {Track[]} tracks\n * A list of tracks to initialize the list with.\n *\n * @abstract\n */\n function TrackList(tracks) {\n var _this;\n\n if (tracks === void 0) {\n tracks = [];\n }\n\n _this = _EventTarget.call(this) || this;\n _this.tracks_ = [];\n /**\n * @memberof TrackList\n * @member {number} length\n * The current number of `Track`s in the this Trackist.\n * @instance\n */\n\n Object.defineProperty(_assertThisInitialized(_this), 'length', {\n get: function get() {\n return this.tracks_.length;\n }\n });\n\n for (var i = 0; i < tracks.length; i++) {\n _this.addTrack(tracks[i]);\n }\n\n return _this;\n }\n /**\n * Add a {@link Track} to the `TrackList`\n *\n * @param {Track} track\n * The audio, video, or text track to add to the list.\n *\n * @fires TrackList#addtrack\n */\n\n\n var _proto = TrackList.prototype;\n\n _proto.addTrack = function addTrack(track) {\n var _this2 = this;\n\n var index = this.tracks_.length;\n\n if (!('' + index in this)) {\n Object.defineProperty(this, index, {\n get: function get() {\n return this.tracks_[index];\n }\n });\n } // Do not add duplicate tracks\n\n\n if (this.tracks_.indexOf(track) === -1) {\n this.tracks_.push(track);\n /**\n * Triggered when a track is added to a track list.\n *\n * @event TrackList#addtrack\n * @type {EventTarget~Event}\n * @property {Track} track\n * A reference to track that was added.\n */\n\n this.trigger({\n track: track,\n type: 'addtrack',\n target: this\n });\n }\n /**\n * Triggered when a track label is changed.\n *\n * @event TrackList#addtrack\n * @type {EventTarget~Event}\n * @property {Track} track\n * A reference to track that was added.\n */\n\n\n track.labelchange_ = function () {\n _this2.trigger({\n track: track,\n type: 'labelchange',\n target: _this2\n });\n };\n\n if (isEvented(track)) {\n track.addEventListener('labelchange', track.labelchange_);\n }\n }\n /**\n * Remove a {@link Track} from the `TrackList`\n *\n * @param {Track} rtrack\n * The audio, video, or text track to remove from the list.\n *\n * @fires TrackList#removetrack\n */\n ;\n\n _proto.removeTrack = function removeTrack(rtrack) {\n var track;\n\n for (var i = 0, l = this.length; i < l; i++) {\n if (this[i] === rtrack) {\n track = this[i];\n\n if (track.off) {\n track.off();\n }\n\n this.tracks_.splice(i, 1);\n break;\n }\n }\n\n if (!track) {\n return;\n }\n /**\n * Triggered when a track is removed from track list.\n *\n * @event TrackList#removetrack\n * @type {EventTarget~Event}\n * @property {Track} track\n * A reference to track that was removed.\n */\n\n\n this.trigger({\n track: track,\n type: 'removetrack',\n target: this\n });\n }\n /**\n * Get a Track from the TrackList by a tracks id\n *\n * @param {string} id - the id of the track to get\n * @method getTrackById\n * @return {Track}\n * @private\n */\n ;\n\n _proto.getTrackById = function getTrackById(id) {\n var result = null;\n\n for (var i = 0, l = this.length; i < l; i++) {\n var track = this[i];\n\n if (track.id === id) {\n result = track;\n break;\n }\n }\n\n return result;\n };\n\n return TrackList;\n}(EventTarget$2);\n/**\n * Triggered when a different track is selected/enabled.\n *\n * @event TrackList#change\n * @type {EventTarget~Event}\n */\n\n/**\n * Events that can be called with on + eventName. See {@link EventHandler}.\n *\n * @property {Object} TrackList#allowedEvents_\n * @private\n */\n\n\nTrackList.prototype.allowedEvents_ = {\n change: 'change',\n addtrack: 'addtrack',\n removetrack: 'removetrack',\n labelchange: 'labelchange'\n}; // emulate attribute EventHandler support to allow for feature detection\n\nfor (var event in TrackList.prototype.allowedEvents_) {\n TrackList.prototype['on' + event] = null;\n}\n\n/**\n * Anywhere we call this function we diverge from the spec\n * as we only support one enabled audiotrack at a time\n *\n * @param {AudioTrackList} list\n * list to work on\n *\n * @param {AudioTrack} track\n * The track to skip\n *\n * @private\n */\n\nvar disableOthers$1 = function disableOthers(list, track) {\n for (var i = 0; i < list.length; i++) {\n if (!Object.keys(list[i]).length || track.id === list[i].id) {\n continue;\n } // another audio track is enabled, disable it\n\n\n list[i].enabled = false;\n }\n};\n/**\n * The current list of {@link AudioTrack} for a media file.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist}\n * @extends TrackList\n */\n\n\nvar AudioTrackList = /*#__PURE__*/function (_TrackList) {\n _inheritsLoose(AudioTrackList, _TrackList);\n\n /**\n * Create an instance of this class.\n *\n * @param {AudioTrack[]} [tracks=[]]\n * A list of `AudioTrack` to instantiate the list with.\n */\n function AudioTrackList(tracks) {\n var _this;\n\n if (tracks === void 0) {\n tracks = [];\n }\n\n // make sure only 1 track is enabled\n // sorted from last index to first index\n for (var i = tracks.length - 1; i >= 0; i--) {\n if (tracks[i].enabled) {\n disableOthers$1(tracks, tracks[i]);\n break;\n }\n }\n\n _this = _TrackList.call(this, tracks) || this;\n _this.changing_ = false;\n return _this;\n }\n /**\n * Add an {@link AudioTrack} to the `AudioTrackList`.\n *\n * @param {AudioTrack} track\n * The AudioTrack to add to the list\n *\n * @fires TrackList#addtrack\n */\n\n\n var _proto = AudioTrackList.prototype;\n\n _proto.addTrack = function addTrack(track) {\n var _this2 = this;\n\n if (track.enabled) {\n disableOthers$1(this, track);\n }\n\n _TrackList.prototype.addTrack.call(this, track); // native tracks don't have this\n\n\n if (!track.addEventListener) {\n return;\n }\n\n track.enabledChange_ = function () {\n // when we are disabling other tracks (since we don't support\n // more than one track at a time) we will set changing_\n // to true so that we don't trigger additional change events\n if (_this2.changing_) {\n return;\n }\n\n _this2.changing_ = true;\n disableOthers$1(_this2, track);\n _this2.changing_ = false;\n\n _this2.trigger('change');\n };\n /**\n * @listens AudioTrack#enabledchange\n * @fires TrackList#change\n */\n\n\n track.addEventListener('enabledchange', track.enabledChange_);\n };\n\n _proto.removeTrack = function removeTrack(rtrack) {\n _TrackList.prototype.removeTrack.call(this, rtrack);\n\n if (rtrack.removeEventListener && rtrack.enabledChange_) {\n rtrack.removeEventListener('enabledchange', rtrack.enabledChange_);\n rtrack.enabledChange_ = null;\n }\n };\n\n return AudioTrackList;\n}(TrackList);\n\n/**\n * Un-select all other {@link VideoTrack}s that are selected.\n *\n * @param {VideoTrackList} list\n * list to work on\n *\n * @param {VideoTrack} track\n * The track to skip\n *\n * @private\n */\n\nvar disableOthers = function disableOthers(list, track) {\n for (var i = 0; i < list.length; i++) {\n if (!Object.keys(list[i]).length || track.id === list[i].id) {\n continue;\n } // another video track is enabled, disable it\n\n\n list[i].selected = false;\n }\n};\n/**\n * The current list of {@link VideoTrack} for a video.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist}\n * @extends TrackList\n */\n\n\nvar VideoTrackList = /*#__PURE__*/function (_TrackList) {\n _inheritsLoose(VideoTrackList, _TrackList);\n\n /**\n * Create an instance of this class.\n *\n * @param {VideoTrack[]} [tracks=[]]\n * A list of `VideoTrack` to instantiate the list with.\n */\n function VideoTrackList(tracks) {\n var _this;\n\n if (tracks === void 0) {\n tracks = [];\n }\n\n // make sure only 1 track is enabled\n // sorted from last index to first index\n for (var i = tracks.length - 1; i >= 0; i--) {\n if (tracks[i].selected) {\n disableOthers(tracks, tracks[i]);\n break;\n }\n }\n\n _this = _TrackList.call(this, tracks) || this;\n _this.changing_ = false;\n /**\n * @member {number} VideoTrackList#selectedIndex\n * The current index of the selected {@link VideoTrack`}.\n */\n\n Object.defineProperty(_assertThisInitialized(_this), 'selectedIndex', {\n get: function get() {\n for (var _i = 0; _i < this.length; _i++) {\n if (this[_i].selected) {\n return _i;\n }\n }\n\n return -1;\n },\n set: function set() {}\n });\n return _this;\n }\n /**\n * Add a {@link VideoTrack} to the `VideoTrackList`.\n *\n * @param {VideoTrack} track\n * The VideoTrack to add to the list\n *\n * @fires TrackList#addtrack\n */\n\n\n var _proto = VideoTrackList.prototype;\n\n _proto.addTrack = function addTrack(track) {\n var _this2 = this;\n\n if (track.selected) {\n disableOthers(this, track);\n }\n\n _TrackList.prototype.addTrack.call(this, track); // native tracks don't have this\n\n\n if (!track.addEventListener) {\n return;\n }\n\n track.selectedChange_ = function () {\n if (_this2.changing_) {\n return;\n }\n\n _this2.changing_ = true;\n disableOthers(_this2, track);\n _this2.changing_ = false;\n\n _this2.trigger('change');\n };\n /**\n * @listens VideoTrack#selectedchange\n * @fires TrackList#change\n */\n\n\n track.addEventListener('selectedchange', track.selectedChange_);\n };\n\n _proto.removeTrack = function removeTrack(rtrack) {\n _TrackList.prototype.removeTrack.call(this, rtrack);\n\n if (rtrack.removeEventListener && rtrack.selectedChange_) {\n rtrack.removeEventListener('selectedchange', rtrack.selectedChange_);\n rtrack.selectedChange_ = null;\n }\n };\n\n return VideoTrackList;\n}(TrackList);\n\n/**\n * The current list of {@link TextTrack} for a media file.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist}\n * @extends TrackList\n */\n\nvar TextTrackList = /*#__PURE__*/function (_TrackList) {\n _inheritsLoose(TextTrackList, _TrackList);\n\n function TextTrackList() {\n return _TrackList.apply(this, arguments) || this;\n }\n\n var _proto = TextTrackList.prototype;\n\n /**\n * Add a {@link TextTrack} to the `TextTrackList`\n *\n * @param {TextTrack} track\n * The text track to add to the list.\n *\n * @fires TrackList#addtrack\n */\n _proto.addTrack = function addTrack(track) {\n var _this = this;\n\n _TrackList.prototype.addTrack.call(this, track);\n\n if (!this.queueChange_) {\n this.queueChange_ = function () {\n return _this.queueTrigger('change');\n };\n }\n\n if (!this.triggerSelectedlanguagechange) {\n this.triggerSelectedlanguagechange_ = function () {\n return _this.trigger('selectedlanguagechange');\n };\n }\n /**\n * @listens TextTrack#modechange\n * @fires TrackList#change\n */\n\n\n track.addEventListener('modechange', this.queueChange_);\n var nonLanguageTextTrackKind = ['metadata', 'chapters'];\n\n if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) {\n track.addEventListener('modechange', this.triggerSelectedlanguagechange_);\n }\n };\n\n _proto.removeTrack = function removeTrack(rtrack) {\n _TrackList.prototype.removeTrack.call(this, rtrack); // manually remove the event handlers we added\n\n\n if (rtrack.removeEventListener) {\n if (this.queueChange_) {\n rtrack.removeEventListener('modechange', this.queueChange_);\n }\n\n if (this.selectedlanguagechange_) {\n rtrack.removeEventListener('modechange', this.triggerSelectedlanguagechange_);\n }\n }\n };\n\n return TextTrackList;\n}(TrackList);\n\n/**\n * @file html-track-element-list.js\n */\n\n/**\n * The current list of {@link HtmlTrackElement}s.\n */\nvar HtmlTrackElementList = /*#__PURE__*/function () {\n /**\n * Create an instance of this class.\n *\n * @param {HtmlTrackElement[]} [tracks=[]]\n * A list of `HtmlTrackElement` to instantiate the list with.\n */\n function HtmlTrackElementList(trackElements) {\n if (trackElements === void 0) {\n trackElements = [];\n }\n\n this.trackElements_ = [];\n /**\n * @memberof HtmlTrackElementList\n * @member {number} length\n * The current number of `Track`s in the this Trackist.\n * @instance\n */\n\n Object.defineProperty(this, 'length', {\n get: function get() {\n return this.trackElements_.length;\n }\n });\n\n for (var i = 0, length = trackElements.length; i < length; i++) {\n this.addTrackElement_(trackElements[i]);\n }\n }\n /**\n * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList`\n *\n * @param {HtmlTrackElement} trackElement\n * The track element to add to the list.\n *\n * @private\n */\n\n\n var _proto = HtmlTrackElementList.prototype;\n\n _proto.addTrackElement_ = function addTrackElement_(trackElement) {\n var index = this.trackElements_.length;\n\n if (!('' + index in this)) {\n Object.defineProperty(this, index, {\n get: function get() {\n return this.trackElements_[index];\n }\n });\n } // Do not add duplicate elements\n\n\n if (this.trackElements_.indexOf(trackElement) === -1) {\n this.trackElements_.push(trackElement);\n }\n }\n /**\n * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an\n * {@link TextTrack}.\n *\n * @param {TextTrack} track\n * The track associated with a track element.\n *\n * @return {HtmlTrackElement|undefined}\n * The track element that was found or undefined.\n *\n * @private\n */\n ;\n\n _proto.getTrackElementByTrack_ = function getTrackElementByTrack_(track) {\n var trackElement_;\n\n for (var i = 0, length = this.trackElements_.length; i < length; i++) {\n if (track === this.trackElements_[i].track) {\n trackElement_ = this.trackElements_[i];\n break;\n }\n }\n\n return trackElement_;\n }\n /**\n * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList`\n *\n * @param {HtmlTrackElement} trackElement\n * The track element to remove from the list.\n *\n * @private\n */\n ;\n\n _proto.removeTrackElement_ = function removeTrackElement_(trackElement) {\n for (var i = 0, length = this.trackElements_.length; i < length; i++) {\n if (trackElement === this.trackElements_[i]) {\n if (this.trackElements_[i].track && typeof this.trackElements_[i].track.off === 'function') {\n this.trackElements_[i].track.off();\n }\n\n if (typeof this.trackElements_[i].off === 'function') {\n this.trackElements_[i].off();\n }\n\n this.trackElements_.splice(i, 1);\n break;\n }\n }\n };\n\n return HtmlTrackElementList;\n}();\n\n/**\n * @file text-track-cue-list.js\n */\n\n/**\n * @typedef {Object} TextTrackCueList~TextTrackCue\n *\n * @property {string} id\n * The unique id for this text track cue\n *\n * @property {number} startTime\n * The start time for this text track cue\n *\n * @property {number} endTime\n * The end time for this text track cue\n *\n * @property {boolean} pauseOnExit\n * Pause when the end time is reached if true.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue}\n */\n\n/**\n * A List of TextTrackCues.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist}\n */\nvar TextTrackCueList = /*#__PURE__*/function () {\n /**\n * Create an instance of this class..\n *\n * @param {Array} cues\n * A list of cues to be initialized with\n */\n function TextTrackCueList(cues) {\n TextTrackCueList.prototype.setCues_.call(this, cues);\n /**\n * @memberof TextTrackCueList\n * @member {number} length\n * The current number of `TextTrackCue`s in the TextTrackCueList.\n * @instance\n */\n\n Object.defineProperty(this, 'length', {\n get: function get() {\n return this.length_;\n }\n });\n }\n /**\n * A setter for cues in this list. Creates getters\n * an an index for the cues.\n *\n * @param {Array} cues\n * An array of cues to set\n *\n * @private\n */\n\n\n var _proto = TextTrackCueList.prototype;\n\n _proto.setCues_ = function setCues_(cues) {\n var oldLength = this.length || 0;\n var i = 0;\n var l = cues.length;\n this.cues_ = cues;\n this.length_ = cues.length;\n\n var defineProp = function defineProp(index) {\n if (!('' + index in this)) {\n Object.defineProperty(this, '' + index, {\n get: function get() {\n return this.cues_[index];\n }\n });\n }\n };\n\n if (oldLength < l) {\n i = oldLength;\n\n for (; i < l; i++) {\n defineProp.call(this, i);\n }\n }\n }\n /**\n * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id.\n *\n * @param {string} id\n * The id of the cue that should be searched for.\n *\n * @return {TextTrackCueList~TextTrackCue|null}\n * A single cue or null if none was found.\n */\n ;\n\n _proto.getCueById = function getCueById(id) {\n var result = null;\n\n for (var i = 0, l = this.length; i < l; i++) {\n var cue = this[i];\n\n if (cue.id === id) {\n result = cue;\n break;\n }\n }\n\n return result;\n };\n\n return TextTrackCueList;\n}();\n\n/**\n * @file track-kinds.js\n */\n\n/**\n * All possible `VideoTrackKind`s\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind\n * @typedef VideoTrack~Kind\n * @enum\n */\nvar VideoTrackKind = {\n alternative: 'alternative',\n captions: 'captions',\n main: 'main',\n sign: 'sign',\n subtitles: 'subtitles',\n commentary: 'commentary'\n};\n/**\n * All possible `AudioTrackKind`s\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind\n * @typedef AudioTrack~Kind\n * @enum\n */\n\nvar AudioTrackKind = {\n 'alternative': 'alternative',\n 'descriptions': 'descriptions',\n 'main': 'main',\n 'main-desc': 'main-desc',\n 'translation': 'translation',\n 'commentary': 'commentary'\n};\n/**\n * All possible `TextTrackKind`s\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind\n * @typedef TextTrack~Kind\n * @enum\n */\n\nvar TextTrackKind = {\n subtitles: 'subtitles',\n captions: 'captions',\n descriptions: 'descriptions',\n chapters: 'chapters',\n metadata: 'metadata'\n};\n/**\n * All possible `TextTrackMode`s\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode\n * @typedef TextTrack~Mode\n * @enum\n */\n\nvar TextTrackMode = {\n disabled: 'disabled',\n hidden: 'hidden',\n showing: 'showing'\n};\n\n/**\n * A Track class that contains all of the common functionality for {@link AudioTrack},\n * {@link VideoTrack}, and {@link TextTrack}.\n *\n * > Note: This class should not be used directly\n *\n * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html}\n * @extends EventTarget\n * @abstract\n */\n\nvar Track = /*#__PURE__*/function (_EventTarget) {\n _inheritsLoose(Track, _EventTarget);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} [options={}]\n * Object of option names and values\n *\n * @param {string} [options.kind='']\n * A valid kind for the track type you are creating.\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this AudioTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @abstract\n */\n function Track(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _EventTarget.call(this) || this;\n var trackProps = {\n id: options.id || 'vjs_track_' + newGUID(),\n kind: options.kind || '',\n language: options.language || ''\n };\n var label = options.label || '';\n /**\n * @memberof Track\n * @member {string} id\n * The id of this track. Cannot be changed after creation.\n * @instance\n *\n * @readonly\n */\n\n /**\n * @memberof Track\n * @member {string} kind\n * The kind of track that this is. Cannot be changed after creation.\n * @instance\n *\n * @readonly\n */\n\n /**\n * @memberof Track\n * @member {string} language\n * The two letter language code for this track. Cannot be changed after\n * creation.\n * @instance\n *\n * @readonly\n */\n\n var _loop = function _loop(key) {\n Object.defineProperty(_assertThisInitialized(_this), key, {\n get: function get() {\n return trackProps[key];\n },\n set: function set() {}\n });\n };\n\n for (var key in trackProps) {\n _loop(key);\n }\n /**\n * @memberof Track\n * @member {string} label\n * The label of this track. Cannot be changed after creation.\n * @instance\n *\n * @fires Track#labelchange\n */\n\n\n Object.defineProperty(_assertThisInitialized(_this), 'label', {\n get: function get() {\n return label;\n },\n set: function set(newLabel) {\n if (newLabel !== label) {\n label = newLabel;\n /**\n * An event that fires when label changes on this track.\n *\n * > Note: This is not part of the spec!\n *\n * @event Track#labelchange\n * @type {EventTarget~Event}\n */\n\n this.trigger('labelchange');\n }\n }\n });\n return _this;\n }\n\n return Track;\n}(EventTarget$2);\n\n/**\n * @file url.js\n * @module url\n */\n/**\n * @typedef {Object} url:URLObject\n *\n * @property {string} protocol\n * The protocol of the url that was parsed.\n *\n * @property {string} hostname\n * The hostname of the url that was parsed.\n *\n * @property {string} port\n * The port of the url that was parsed.\n *\n * @property {string} pathname\n * The pathname of the url that was parsed.\n *\n * @property {string} search\n * The search query of the url that was parsed.\n *\n * @property {string} hash\n * The hash of the url that was parsed.\n *\n * @property {string} host\n * The host of the url that was parsed.\n */\n\n/**\n * Resolve and parse the elements of a URL.\n *\n * @function\n * @param {String} url\n * The url to parse\n *\n * @return {url:URLObject}\n * An object of url details\n */\n\nvar parseUrl = function parseUrl(url) {\n // This entire method can be replace with URL once we are able to drop IE11\n var props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host']; // add the url to an anchor and let the browser parse the URL\n\n var a = document.createElement('a');\n a.href = url; // Copy the specific URL properties to a new object\n // This is also needed for IE because the anchor loses its\n // properties when it's removed from the dom\n\n var details = {};\n\n for (var i = 0; i < props.length; i++) {\n details[props[i]] = a[props[i]];\n } // IE adds the port to the host property unlike everyone else. If\n // a port identifier is added for standard ports, strip it.\n\n\n if (details.protocol === 'http:') {\n details.host = details.host.replace(/:80$/, '');\n }\n\n if (details.protocol === 'https:') {\n details.host = details.host.replace(/:443$/, '');\n }\n\n if (!details.protocol) {\n details.protocol = window$1.location.protocol;\n }\n /* istanbul ignore if */\n\n\n if (!details.host) {\n details.host = window$1.location.host;\n }\n\n return details;\n};\n/**\n * Get absolute version of relative URL. Used to tell Flash the correct URL.\n *\n * @function\n * @param {string} url\n * URL to make absolute\n *\n * @return {string}\n * Absolute URL\n *\n * @see http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue\n */\n\nvar getAbsoluteURL = function getAbsoluteURL(url) {\n // Check if absolute URL\n if (!url.match(/^https?:\\/\\//)) {\n // Convert to absolute URL. Flash hosted off-site needs an absolute URL.\n // add the url to an anchor and let the browser parse the URL\n var a = document.createElement('a');\n a.href = url;\n url = a.href;\n }\n\n return url;\n};\n/**\n * Returns the extension of the passed file name. It will return an empty string\n * if passed an invalid path.\n *\n * @function\n * @param {string} path\n * The fileName path like '/path/to/file.mp4'\n *\n * @return {string}\n * The extension in lower case or an empty string if no\n * extension could be found.\n */\n\nvar getFileExtension = function getFileExtension(path) {\n if (typeof path === 'string') {\n var splitPathRe = /^(\\/?)([\\s\\S]*?)((?:\\.{1,2}|[^\\/]+?)(\\.([^\\.\\/\\?]+)))(?:[\\/]*|[\\?].*)$/;\n var pathParts = splitPathRe.exec(path);\n\n if (pathParts) {\n return pathParts.pop().toLowerCase();\n }\n }\n\n return '';\n};\n/**\n * Returns whether the url passed is a cross domain request or not.\n *\n * @function\n * @param {string} url\n * The url to check.\n *\n * @param {Object} [winLoc]\n * the domain to check the url against, defaults to window.location\n *\n * @param {string} [winLoc.protocol]\n * The window location protocol defaults to window.location.protocol\n *\n * @param {string} [winLoc.host]\n * The window location host defaults to window.location.host\n *\n * @return {boolean}\n * Whether it is a cross domain request or not.\n */\n\nvar isCrossOrigin = function isCrossOrigin(url, winLoc) {\n if (winLoc === void 0) {\n winLoc = window$1.location;\n }\n\n var urlInfo = parseUrl(url); // IE8 protocol relative urls will return ':' for protocol\n\n var srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol; // Check if url is for another domain/origin\n // IE8 doesn't know location.origin, so we won't rely on it here\n\n var crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host;\n return crossOrigin;\n};\n\nvar Url = /*#__PURE__*/Object.freeze({\n __proto__: null,\n parseUrl: parseUrl,\n getAbsoluteURL: getAbsoluteURL,\n getFileExtension: getFileExtension,\n isCrossOrigin: isCrossOrigin\n});\n\n/**\n * Takes a webvtt file contents and parses it into cues\n *\n * @param {string} srcContent\n * webVTT file contents\n *\n * @param {TextTrack} track\n * TextTrack to add cues to. Cues come from the srcContent.\n *\n * @private\n */\n\nvar parseCues = function parseCues(srcContent, track) {\n var parser = new window$1.WebVTT.Parser(window$1, window$1.vttjs, window$1.WebVTT.StringDecoder());\n var errors = [];\n\n parser.oncue = function (cue) {\n track.addCue(cue);\n };\n\n parser.onparsingerror = function (error) {\n errors.push(error);\n };\n\n parser.onflush = function () {\n track.trigger({\n type: 'loadeddata',\n target: track\n });\n };\n\n parser.parse(srcContent);\n\n if (errors.length > 0) {\n if (window$1.console && window$1.console.groupCollapsed) {\n window$1.console.groupCollapsed(\"Text Track parsing errors for \" + track.src);\n }\n\n errors.forEach(function (error) {\n return log$1.error(error);\n });\n\n if (window$1.console && window$1.console.groupEnd) {\n window$1.console.groupEnd();\n }\n }\n\n parser.flush();\n};\n/**\n * Load a `TextTrack` from a specified url.\n *\n * @param {string} src\n * Url to load track from.\n *\n * @param {TextTrack} track\n * Track to add cues to. Comes from the content at the end of `url`.\n *\n * @private\n */\n\n\nvar loadTrack = function loadTrack(src, track) {\n var opts = {\n uri: src\n };\n var crossOrigin = isCrossOrigin(src);\n\n if (crossOrigin) {\n opts.cors = crossOrigin;\n }\n\n var withCredentials = track.tech_.crossOrigin() === 'use-credentials';\n\n if (withCredentials) {\n opts.withCredentials = withCredentials;\n }\n\n XHR(opts, bind(this, function (err, response, responseBody) {\n if (err) {\n return log$1.error(err, response);\n }\n\n track.loaded_ = true; // Make sure that vttjs has loaded, otherwise, wait till it finished loading\n // NOTE: this is only used for the alt/video.novtt.js build\n\n if (typeof window$1.WebVTT !== 'function') {\n if (track.tech_) {\n // to prevent use before define eslint error, we define loadHandler\n // as a let here\n track.tech_.any(['vttjsloaded', 'vttjserror'], function (event) {\n if (event.type === 'vttjserror') {\n log$1.error(\"vttjs failed to load, stopping trying to process \" + track.src);\n return;\n }\n\n return parseCues(responseBody, track);\n });\n }\n } else {\n parseCues(responseBody, track);\n }\n }));\n};\n/**\n * A representation of a single `TextTrack`.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}\n * @extends Track\n */\n\n\nvar TextTrack = /*#__PURE__*/function (_Track) {\n _inheritsLoose(TextTrack, _Track);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} options={}\n * Object of option names and values\n *\n * @param {Tech} options.tech\n * A reference to the tech that owns this TextTrack.\n *\n * @param {TextTrack~Kind} [options.kind='subtitles']\n * A valid text track kind.\n *\n * @param {TextTrack~Mode} [options.mode='disabled']\n * A valid text track mode.\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this TextTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @param {string} [options.srclang='']\n * A valid two character language code. An alternative, but deprioritized\n * version of `options.language`\n *\n * @param {string} [options.src]\n * A url to TextTrack cues.\n *\n * @param {boolean} [options.default]\n * If this track should default to on or off.\n */\n function TextTrack(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n if (!options.tech) {\n throw new Error('A tech was not provided.');\n }\n\n var settings = mergeOptions$3(options, {\n kind: TextTrackKind[options.kind] || 'subtitles',\n language: options.language || options.srclang || ''\n });\n var mode = TextTrackMode[settings.mode] || 'disabled';\n var default_ = settings[\"default\"];\n\n if (settings.kind === 'metadata' || settings.kind === 'chapters') {\n mode = 'hidden';\n }\n\n _this = _Track.call(this, settings) || this;\n _this.tech_ = settings.tech;\n _this.cues_ = [];\n _this.activeCues_ = [];\n _this.preload_ = _this.tech_.preloadTextTracks !== false;\n var cues = new TextTrackCueList(_this.cues_);\n var activeCues = new TextTrackCueList(_this.activeCues_);\n var changed = false;\n _this.timeupdateHandler = bind(_assertThisInitialized(_this), function (event) {\n if (event === void 0) {\n event = {};\n }\n\n if (this.tech_.isDisposed()) {\n return;\n }\n\n if (!this.tech_.isReady_) {\n if (event.type !== 'timeupdate') {\n this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);\n }\n\n return;\n } // Accessing this.activeCues for the side-effects of updating itself\n // due to its nature as a getter function. Do not remove or cues will\n // stop updating!\n // Use the setter to prevent deletion from uglify (pure_getters rule)\n\n\n this.activeCues = this.activeCues;\n\n if (changed) {\n this.trigger('cuechange');\n changed = false;\n }\n\n if (event.type !== 'timeupdate') {\n this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);\n }\n });\n\n var disposeHandler = function disposeHandler() {\n _this.stopTracking();\n };\n\n _this.tech_.one('dispose', disposeHandler);\n\n if (mode !== 'disabled') {\n _this.startTracking();\n }\n\n Object.defineProperties(_assertThisInitialized(_this), {\n /**\n * @memberof TextTrack\n * @member {boolean} default\n * If this track was set to be on or off by default. Cannot be changed after\n * creation.\n * @instance\n *\n * @readonly\n */\n \"default\": {\n get: function get() {\n return default_;\n },\n set: function set() {}\n },\n\n /**\n * @memberof TextTrack\n * @member {string} mode\n * Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will\n * not be set if setting to an invalid mode.\n * @instance\n *\n * @fires TextTrack#modechange\n */\n mode: {\n get: function get() {\n return mode;\n },\n set: function set(newMode) {\n if (!TextTrackMode[newMode]) {\n return;\n }\n\n if (mode === newMode) {\n return;\n }\n\n mode = newMode;\n\n if (!this.preload_ && mode !== 'disabled' && this.cues.length === 0) {\n // On-demand load.\n loadTrack(this.src, this);\n }\n\n this.stopTracking();\n\n if (mode !== 'disabled') {\n this.startTracking();\n }\n /**\n * An event that fires when mode changes on this track. This allows\n * the TextTrackList that holds this track to act accordingly.\n *\n * > Note: This is not part of the spec!\n *\n * @event TextTrack#modechange\n * @type {EventTarget~Event}\n */\n\n\n this.trigger('modechange');\n }\n },\n\n /**\n * @memberof TextTrack\n * @member {TextTrackCueList} cues\n * The text track cue list for this TextTrack.\n * @instance\n */\n cues: {\n get: function get() {\n if (!this.loaded_) {\n return null;\n }\n\n return cues;\n },\n set: function set() {}\n },\n\n /**\n * @memberof TextTrack\n * @member {TextTrackCueList} activeCues\n * The list text track cues that are currently active for this TextTrack.\n * @instance\n */\n activeCues: {\n get: function get() {\n if (!this.loaded_) {\n return null;\n } // nothing to do\n\n\n if (this.cues.length === 0) {\n return activeCues;\n }\n\n var ct = this.tech_.currentTime();\n var active = [];\n\n for (var i = 0, l = this.cues.length; i < l; i++) {\n var cue = this.cues[i];\n\n if (cue.startTime <= ct && cue.endTime >= ct) {\n active.push(cue);\n } else if (cue.startTime === cue.endTime && cue.startTime <= ct && cue.startTime + 0.5 >= ct) {\n active.push(cue);\n }\n }\n\n changed = false;\n\n if (active.length !== this.activeCues_.length) {\n changed = true;\n } else {\n for (var _i = 0; _i < active.length; _i++) {\n if (this.activeCues_.indexOf(active[_i]) === -1) {\n changed = true;\n }\n }\n }\n\n this.activeCues_ = active;\n activeCues.setCues_(this.activeCues_);\n return activeCues;\n },\n // /!\\ Keep this setter empty (see the timeupdate handler above)\n set: function set() {}\n }\n });\n\n if (settings.src) {\n _this.src = settings.src;\n\n if (!_this.preload_) {\n // Tracks will load on-demand.\n // Act like we're loaded for other purposes.\n _this.loaded_ = true;\n }\n\n if (_this.preload_ || settings.kind !== 'subtitles' && settings.kind !== 'captions') {\n loadTrack(_this.src, _assertThisInitialized(_this));\n }\n } else {\n _this.loaded_ = true;\n }\n\n return _this;\n }\n\n var _proto = TextTrack.prototype;\n\n _proto.startTracking = function startTracking() {\n // More precise cues based on requestVideoFrameCallback with a requestAnimationFram fallback\n this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler); // Also listen to timeupdate in case rVFC/rAF stops (window in background, audio in video el)\n\n this.tech_.on('timeupdate', this.timeupdateHandler);\n };\n\n _proto.stopTracking = function stopTracking() {\n if (this.rvf_) {\n this.tech_.cancelVideoFrameCallback(this.rvf_);\n this.rvf_ = undefined;\n }\n\n this.tech_.off('timeupdate', this.timeupdateHandler);\n }\n /**\n * Add a cue to the internal list of cues.\n *\n * @param {TextTrack~Cue} cue\n * The cue to add to our internal list\n */\n ;\n\n _proto.addCue = function addCue(originalCue) {\n var cue = originalCue;\n\n if (window$1.vttjs && !(originalCue instanceof window$1.vttjs.VTTCue)) {\n cue = new window$1.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);\n\n for (var prop in originalCue) {\n if (!(prop in cue)) {\n cue[prop] = originalCue[prop];\n }\n } // make sure that `id` is copied over\n\n\n cue.id = originalCue.id;\n cue.originalCue_ = originalCue;\n }\n\n var tracks = this.tech_.textTracks();\n\n for (var i = 0; i < tracks.length; i++) {\n if (tracks[i] !== this) {\n tracks[i].removeCue(cue);\n }\n }\n\n this.cues_.push(cue);\n this.cues.setCues_(this.cues_);\n }\n /**\n * Remove a cue from our internal list\n *\n * @param {TextTrack~Cue} removeCue\n * The cue to remove from our internal list\n */\n ;\n\n _proto.removeCue = function removeCue(_removeCue) {\n var i = this.cues_.length;\n\n while (i--) {\n var cue = this.cues_[i];\n\n if (cue === _removeCue || cue.originalCue_ && cue.originalCue_ === _removeCue) {\n this.cues_.splice(i, 1);\n this.cues.setCues_(this.cues_);\n break;\n }\n }\n };\n\n return TextTrack;\n}(Track);\n/**\n * cuechange - One or more cues in the track have become active or stopped being active.\n */\n\n\nTextTrack.prototype.allowedEvents_ = {\n cuechange: 'cuechange'\n};\n\n/**\n * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}\n * only one `AudioTrack` in the list will be enabled at a time.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}\n * @extends Track\n */\n\nvar AudioTrack = /*#__PURE__*/function (_Track) {\n _inheritsLoose(AudioTrack, _Track);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} [options={}]\n * Object of option names and values\n *\n * @param {AudioTrack~Kind} [options.kind='']\n * A valid audio track kind\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this AudioTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @param {boolean} [options.enabled]\n * If this track is the one that is currently playing. If this track is part of\n * an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.\n */\n function AudioTrack(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n var settings = mergeOptions$3(options, {\n kind: AudioTrackKind[options.kind] || ''\n });\n _this = _Track.call(this, settings) || this;\n var enabled = false;\n /**\n * @memberof AudioTrack\n * @member {boolean} enabled\n * If this `AudioTrack` is enabled or not. When setting this will\n * fire {@link AudioTrack#enabledchange} if the state of enabled is changed.\n * @instance\n *\n * @fires VideoTrack#selectedchange\n */\n\n Object.defineProperty(_assertThisInitialized(_this), 'enabled', {\n get: function get() {\n return enabled;\n },\n set: function set(newEnabled) {\n // an invalid or unchanged value\n if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {\n return;\n }\n\n enabled = newEnabled;\n /**\n * An event that fires when enabled changes on this track. This allows\n * the AudioTrackList that holds this track to act accordingly.\n *\n * > Note: This is not part of the spec! Native tracks will do\n * this internally without an event.\n *\n * @event AudioTrack#enabledchange\n * @type {EventTarget~Event}\n */\n\n this.trigger('enabledchange');\n }\n }); // if the user sets this track to selected then\n // set selected to that true value otherwise\n // we keep it false\n\n if (settings.enabled) {\n _this.enabled = settings.enabled;\n }\n\n _this.loaded_ = true;\n return _this;\n }\n\n return AudioTrack;\n}(Track);\n\n/**\n * A representation of a single `VideoTrack`.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}\n * @extends Track\n */\n\nvar VideoTrack = /*#__PURE__*/function (_Track) {\n _inheritsLoose(VideoTrack, _Track);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} [options={}]\n * Object of option names and values\n *\n * @param {string} [options.kind='']\n * A valid {@link VideoTrack~Kind}\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this AudioTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @param {boolean} [options.selected]\n * If this track is the one that is currently playing.\n */\n function VideoTrack(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n var settings = mergeOptions$3(options, {\n kind: VideoTrackKind[options.kind] || ''\n });\n _this = _Track.call(this, settings) || this;\n var selected = false;\n /**\n * @memberof VideoTrack\n * @member {boolean} selected\n * If this `VideoTrack` is selected or not. When setting this will\n * fire {@link VideoTrack#selectedchange} if the state of selected changed.\n * @instance\n *\n * @fires VideoTrack#selectedchange\n */\n\n Object.defineProperty(_assertThisInitialized(_this), 'selected', {\n get: function get() {\n return selected;\n },\n set: function set(newSelected) {\n // an invalid or unchanged value\n if (typeof newSelected !== 'boolean' || newSelected === selected) {\n return;\n }\n\n selected = newSelected;\n /**\n * An event that fires when selected changes on this track. This allows\n * the VideoTrackList that holds this track to act accordingly.\n *\n * > Note: This is not part of the spec! Native tracks will do\n * this internally without an event.\n *\n * @event VideoTrack#selectedchange\n * @type {EventTarget~Event}\n */\n\n this.trigger('selectedchange');\n }\n }); // if the user sets this track to selected then\n // set selected to that true value otherwise\n // we keep it false\n\n if (settings.selected) {\n _this.selected = settings.selected;\n }\n\n return _this;\n }\n\n return VideoTrack;\n}(Track);\n\n/**\n * @memberof HTMLTrackElement\n * @typedef {HTMLTrackElement~ReadyState}\n * @enum {number}\n */\n\nvar NONE = 0;\nvar LOADING = 1;\nvar LOADED = 2;\nvar ERROR = 3;\n/**\n * A single track represented in the DOM.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}\n * @extends EventTarget\n */\n\nvar HTMLTrackElement = /*#__PURE__*/function (_EventTarget) {\n _inheritsLoose(HTMLTrackElement, _EventTarget);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} options={}\n * Object of option names and values\n *\n * @param {Tech} options.tech\n * A reference to the tech that owns this HTMLTrackElement.\n *\n * @param {TextTrack~Kind} [options.kind='subtitles']\n * A valid text track kind.\n *\n * @param {TextTrack~Mode} [options.mode='disabled']\n * A valid text track mode.\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this TextTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @param {string} [options.srclang='']\n * A valid two character language code. An alternative, but deprioritized\n * version of `options.language`\n *\n * @param {string} [options.src]\n * A url to TextTrack cues.\n *\n * @param {boolean} [options.default]\n * If this track should default to on or off.\n */\n function HTMLTrackElement(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _EventTarget.call(this) || this;\n var readyState;\n var track = new TextTrack(options);\n _this.kind = track.kind;\n _this.src = track.src;\n _this.srclang = track.language;\n _this.label = track.label;\n _this[\"default\"] = track[\"default\"];\n Object.defineProperties(_assertThisInitialized(_this), {\n /**\n * @memberof HTMLTrackElement\n * @member {HTMLTrackElement~ReadyState} readyState\n * The current ready state of the track element.\n * @instance\n */\n readyState: {\n get: function get() {\n return readyState;\n }\n },\n\n /**\n * @memberof HTMLTrackElement\n * @member {TextTrack} track\n * The underlying TextTrack object.\n * @instance\n *\n */\n track: {\n get: function get() {\n return track;\n }\n }\n });\n readyState = NONE;\n /**\n * @listens TextTrack#loadeddata\n * @fires HTMLTrackElement#load\n */\n\n track.addEventListener('loadeddata', function () {\n readyState = LOADED;\n\n _this.trigger({\n type: 'load',\n target: _assertThisInitialized(_this)\n });\n });\n return _this;\n }\n\n return HTMLTrackElement;\n}(EventTarget$2);\n\nHTMLTrackElement.prototype.allowedEvents_ = {\n load: 'load'\n};\nHTMLTrackElement.NONE = NONE;\nHTMLTrackElement.LOADING = LOADING;\nHTMLTrackElement.LOADED = LOADED;\nHTMLTrackElement.ERROR = ERROR;\n\n/*\n * This file contains all track properties that are used in\n * player.js, tech.js, html5.js and possibly other techs in the future.\n */\n\nvar NORMAL = {\n audio: {\n ListClass: AudioTrackList,\n TrackClass: AudioTrack,\n capitalName: 'Audio'\n },\n video: {\n ListClass: VideoTrackList,\n TrackClass: VideoTrack,\n capitalName: 'Video'\n },\n text: {\n ListClass: TextTrackList,\n TrackClass: TextTrack,\n capitalName: 'Text'\n }\n};\nObject.keys(NORMAL).forEach(function (type) {\n NORMAL[type].getterName = type + \"Tracks\";\n NORMAL[type].privateName = type + \"Tracks_\";\n});\nvar REMOTE = {\n remoteText: {\n ListClass: TextTrackList,\n TrackClass: TextTrack,\n capitalName: 'RemoteText',\n getterName: 'remoteTextTracks',\n privateName: 'remoteTextTracks_'\n },\n remoteTextEl: {\n ListClass: HtmlTrackElementList,\n TrackClass: HTMLTrackElement,\n capitalName: 'RemoteTextTrackEls',\n getterName: 'remoteTextTrackEls',\n privateName: 'remoteTextTrackEls_'\n }\n};\n\nvar ALL = _extends({}, NORMAL, REMOTE);\n\nREMOTE.names = Object.keys(REMOTE);\nNORMAL.names = Object.keys(NORMAL);\nALL.names = [].concat(REMOTE.names).concat(NORMAL.names);\n\n/**\n * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string\n * that just contains the src url alone.\n * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`\n * `var SourceString = 'http://example.com/some-video.mp4';`\n *\n * @typedef {Object|string} Tech~SourceObject\n *\n * @property {string} src\n * The url to the source\n *\n * @property {string} type\n * The mime type of the source\n */\n\n/**\n * A function used by {@link Tech} to create a new {@link TextTrack}.\n *\n * @private\n *\n * @param {Tech} self\n * An instance of the Tech class.\n *\n * @param {string} kind\n * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n *\n * @param {string} [label]\n * Label to identify the text track\n *\n * @param {string} [language]\n * Two letter language abbreviation\n *\n * @param {Object} [options={}]\n * An object with additional text track options\n *\n * @return {TextTrack}\n * The text track that was created.\n */\n\nfunction createTrackHelper(self, kind, label, language, options) {\n if (options === void 0) {\n options = {};\n }\n\n var tracks = self.textTracks();\n options.kind = kind;\n\n if (label) {\n options.label = label;\n }\n\n if (language) {\n options.language = language;\n }\n\n options.tech = self;\n var track = new ALL.text.TrackClass(options);\n tracks.addTrack(track);\n return track;\n}\n/**\n * This is the base class for media playback technology controllers, such as\n * {@link HTML5}\n *\n * @extends Component\n */\n\n\nvar Tech = /*#__PURE__*/function (_Component) {\n _inheritsLoose(Tech, _Component);\n\n /**\n * Create an instance of this Tech.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} ready\n * Callback function to call when the `HTML5` Tech is ready.\n */\n function Tech(options, ready) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n if (ready === void 0) {\n ready = function ready() {};\n }\n\n // we don't want the tech to report user activity automatically.\n // This is done manually in addControlsListeners\n options.reportTouchActivity = false;\n _this = _Component.call(this, null, options, ready) || this;\n\n _this.onDurationChange_ = function (e) {\n return _this.onDurationChange(e);\n };\n\n _this.trackProgress_ = function (e) {\n return _this.trackProgress(e);\n };\n\n _this.trackCurrentTime_ = function (e) {\n return _this.trackCurrentTime(e);\n };\n\n _this.stopTrackingCurrentTime_ = function (e) {\n return _this.stopTrackingCurrentTime(e);\n };\n\n _this.disposeSourceHandler_ = function (e) {\n return _this.disposeSourceHandler(e);\n };\n\n _this.queuedHanders_ = new Set(); // keep track of whether the current source has played at all to\n // implement a very limited played()\n\n _this.hasStarted_ = false;\n\n _this.on('playing', function () {\n this.hasStarted_ = true;\n });\n\n _this.on('loadstart', function () {\n this.hasStarted_ = false;\n });\n\n ALL.names.forEach(function (name) {\n var props = ALL[name];\n\n if (options && options[props.getterName]) {\n _this[props.privateName] = options[props.getterName];\n }\n }); // Manually track progress in cases where the browser/tech doesn't report it.\n\n if (!_this.featuresProgressEvents) {\n _this.manualProgressOn();\n } // Manually track timeupdates in cases where the browser/tech doesn't report it.\n\n\n if (!_this.featuresTimeupdateEvents) {\n _this.manualTimeUpdatesOn();\n }\n\n ['Text', 'Audio', 'Video'].forEach(function (track) {\n if (options[\"native\" + track + \"Tracks\"] === false) {\n _this[\"featuresNative\" + track + \"Tracks\"] = false;\n }\n });\n\n if (options.nativeCaptions === false || options.nativeTextTracks === false) {\n _this.featuresNativeTextTracks = false;\n } else if (options.nativeCaptions === true || options.nativeTextTracks === true) {\n _this.featuresNativeTextTracks = true;\n }\n\n if (!_this.featuresNativeTextTracks) {\n _this.emulateTextTracks();\n }\n\n _this.preloadTextTracks = options.preloadTextTracks !== false;\n _this.autoRemoteTextTracks_ = new ALL.text.ListClass();\n\n _this.initTrackListeners(); // Turn on component tap events only if not using native controls\n\n\n if (!options.nativeControlsForTouch) {\n _this.emitTapEvents();\n }\n\n if (_this.constructor) {\n _this.name_ = _this.constructor.name || 'Unknown Tech';\n }\n\n return _this;\n }\n /**\n * A special function to trigger source set in a way that will allow player\n * to re-trigger if the player or tech are not ready yet.\n *\n * @fires Tech#sourceset\n * @param {string} src The source string at the time of the source changing.\n */\n\n\n var _proto = Tech.prototype;\n\n _proto.triggerSourceset = function triggerSourceset(src) {\n var _this2 = this;\n\n if (!this.isReady_) {\n // on initial ready we have to trigger source set\n // 1ms after ready so that player can watch for it.\n this.one('ready', function () {\n return _this2.setTimeout(function () {\n return _this2.triggerSourceset(src);\n }, 1);\n });\n }\n /**\n * Fired when the source is set on the tech causing the media element\n * to reload.\n *\n * @see {@link Player#event:sourceset}\n * @event Tech#sourceset\n * @type {EventTarget~Event}\n */\n\n\n this.trigger({\n src: src,\n type: 'sourceset'\n });\n }\n /* Fallbacks for unsupported event types\n ================================================================================ */\n\n /**\n * Polyfill the `progress` event for browsers that don't support it natively.\n *\n * @see {@link Tech#trackProgress}\n */\n ;\n\n _proto.manualProgressOn = function manualProgressOn() {\n this.on('durationchange', this.onDurationChange_);\n this.manualProgress = true; // Trigger progress watching when a source begins loading\n\n this.one('ready', this.trackProgress_);\n }\n /**\n * Turn off the polyfill for `progress` events that was created in\n * {@link Tech#manualProgressOn}\n */\n ;\n\n _proto.manualProgressOff = function manualProgressOff() {\n this.manualProgress = false;\n this.stopTrackingProgress();\n this.off('durationchange', this.onDurationChange_);\n }\n /**\n * This is used to trigger a `progress` event when the buffered percent changes. It\n * sets an interval function that will be called every 500 milliseconds to check if the\n * buffer end percent has changed.\n *\n * > This function is called by {@link Tech#manualProgressOn}\n *\n * @param {EventTarget~Event} event\n * The `ready` event that caused this to run.\n *\n * @listens Tech#ready\n * @fires Tech#progress\n */\n ;\n\n _proto.trackProgress = function trackProgress(event) {\n this.stopTrackingProgress();\n this.progressInterval = this.setInterval(bind(this, function () {\n // Don't trigger unless buffered amount is greater than last time\n var numBufferedPercent = this.bufferedPercent();\n\n if (this.bufferedPercent_ !== numBufferedPercent) {\n /**\n * See {@link Player#progress}\n *\n * @event Tech#progress\n * @type {EventTarget~Event}\n */\n this.trigger('progress');\n }\n\n this.bufferedPercent_ = numBufferedPercent;\n\n if (numBufferedPercent === 1) {\n this.stopTrackingProgress();\n }\n }), 500);\n }\n /**\n * Update our internal duration on a `durationchange` event by calling\n * {@link Tech#duration}.\n *\n * @param {EventTarget~Event} event\n * The `durationchange` event that caused this to run.\n *\n * @listens Tech#durationchange\n */\n ;\n\n _proto.onDurationChange = function onDurationChange(event) {\n this.duration_ = this.duration();\n }\n /**\n * Get and create a `TimeRange` object for buffering.\n *\n * @return {TimeRange}\n * The time range object that was created.\n */\n ;\n\n _proto.buffered = function buffered() {\n return createTimeRanges(0, 0);\n }\n /**\n * Get the percentage of the current video that is currently buffered.\n *\n * @return {number}\n * A number from 0 to 1 that represents the decimal percentage of the\n * video that is buffered.\n *\n */\n ;\n\n _proto.bufferedPercent = function bufferedPercent$1() {\n return bufferedPercent(this.buffered(), this.duration_);\n }\n /**\n * Turn off the polyfill for `progress` events that was created in\n * {@link Tech#manualProgressOn}\n * Stop manually tracking progress events by clearing the interval that was set in\n * {@link Tech#trackProgress}.\n */\n ;\n\n _proto.stopTrackingProgress = function stopTrackingProgress() {\n this.clearInterval(this.progressInterval);\n }\n /**\n * Polyfill the `timeupdate` event for browsers that don't support it.\n *\n * @see {@link Tech#trackCurrentTime}\n */\n ;\n\n _proto.manualTimeUpdatesOn = function manualTimeUpdatesOn() {\n this.manualTimeUpdates = true;\n this.on('play', this.trackCurrentTime_);\n this.on('pause', this.stopTrackingCurrentTime_);\n }\n /**\n * Turn off the polyfill for `timeupdate` events that was created in\n * {@link Tech#manualTimeUpdatesOn}\n */\n ;\n\n _proto.manualTimeUpdatesOff = function manualTimeUpdatesOff() {\n this.manualTimeUpdates = false;\n this.stopTrackingCurrentTime();\n this.off('play', this.trackCurrentTime_);\n this.off('pause', this.stopTrackingCurrentTime_);\n }\n /**\n * Sets up an interval function to track current time and trigger `timeupdate` every\n * 250 milliseconds.\n *\n * @listens Tech#play\n * @triggers Tech#timeupdate\n */\n ;\n\n _proto.trackCurrentTime = function trackCurrentTime() {\n if (this.currentTimeInterval) {\n this.stopTrackingCurrentTime();\n }\n\n this.currentTimeInterval = this.setInterval(function () {\n /**\n * Triggered at an interval of 250ms to indicated that time is passing in the video.\n *\n * @event Tech#timeupdate\n * @type {EventTarget~Event}\n */\n this.trigger({\n type: 'timeupdate',\n target: this,\n manuallyTriggered: true\n }); // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n }, 250);\n }\n /**\n * Stop the interval function created in {@link Tech#trackCurrentTime} so that the\n * `timeupdate` event is no longer triggered.\n *\n * @listens {Tech#pause}\n */\n ;\n\n _proto.stopTrackingCurrentTime = function stopTrackingCurrentTime() {\n this.clearInterval(this.currentTimeInterval); // #1002 - if the video ends right before the next timeupdate would happen,\n // the progress bar won't make it all the way to the end\n\n this.trigger({\n type: 'timeupdate',\n target: this,\n manuallyTriggered: true\n });\n }\n /**\n * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},\n * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.\n *\n * @fires Component#dispose\n */\n ;\n\n _proto.dispose = function dispose() {\n // clear out all tracks because we can't reuse them between techs\n this.clearTracks(NORMAL.names); // Turn off any manual progress or timeupdate tracking\n\n if (this.manualProgress) {\n this.manualProgressOff();\n }\n\n if (this.manualTimeUpdates) {\n this.manualTimeUpdatesOff();\n }\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Clear out a single `TrackList` or an array of `TrackLists` given their names.\n *\n * > Note: Techs without source handlers should call this between sources for `video`\n * & `audio` tracks. You don't want to use them between tracks!\n *\n * @param {string[]|string} types\n * TrackList names to clear, valid names are `video`, `audio`, and\n * `text`.\n */\n ;\n\n _proto.clearTracks = function clearTracks(types) {\n var _this3 = this;\n\n types = [].concat(types); // clear out all tracks because we can't reuse them between techs\n\n types.forEach(function (type) {\n var list = _this3[type + \"Tracks\"]() || [];\n var i = list.length;\n\n while (i--) {\n var track = list[i];\n\n if (type === 'text') {\n _this3.removeRemoteTextTrack(track);\n }\n\n list.removeTrack(track);\n }\n });\n }\n /**\n * Remove any TextTracks added via addRemoteTextTrack that are\n * flagged for automatic garbage collection\n */\n ;\n\n _proto.cleanupAutoTextTracks = function cleanupAutoTextTracks() {\n var list = this.autoRemoteTextTracks_ || [];\n var i = list.length;\n\n while (i--) {\n var track = list[i];\n this.removeRemoteTextTrack(track);\n }\n }\n /**\n * Reset the tech, which will removes all sources and reset the internal readyState.\n *\n * @abstract\n */\n ;\n\n _proto.reset = function reset() {}\n /**\n * Get the value of `crossOrigin` from the tech.\n *\n * @abstract\n *\n * @see {Html5#crossOrigin}\n */\n ;\n\n _proto.crossOrigin = function crossOrigin() {}\n /**\n * Set the value of `crossOrigin` on the tech.\n *\n * @abstract\n *\n * @param {string} crossOrigin the crossOrigin value\n * @see {Html5#setCrossOrigin}\n */\n ;\n\n _proto.setCrossOrigin = function setCrossOrigin() {}\n /**\n * Get or set an error on the Tech.\n *\n * @param {MediaError} [err]\n * Error to set on the Tech\n *\n * @return {MediaError|null}\n * The current error object on the tech, or null if there isn't one.\n */\n ;\n\n _proto.error = function error(err) {\n if (err !== undefined) {\n this.error_ = new MediaError(err);\n this.trigger('error');\n }\n\n return this.error_;\n }\n /**\n * Returns the `TimeRange`s that have been played through for the current source.\n *\n * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.\n * It only checks whether the source has played at all or not.\n *\n * @return {TimeRange}\n * - A single time range if this video has played\n * - An empty set of ranges if not.\n */\n ;\n\n _proto.played = function played() {\n if (this.hasStarted_) {\n return createTimeRanges(0, 0);\n }\n\n return createTimeRanges();\n }\n /**\n * Start playback\n *\n * @abstract\n *\n * @see {Html5#play}\n */\n ;\n\n _proto.play = function play() {}\n /**\n * Set whether we are scrubbing or not\n *\n * @abstract\n *\n * @see {Html5#setScrubbing}\n */\n ;\n\n _proto.setScrubbing = function setScrubbing() {}\n /**\n * Get whether we are scrubbing or not\n *\n * @abstract\n *\n * @see {Html5#scrubbing}\n */\n ;\n\n _proto.scrubbing = function scrubbing() {}\n /**\n * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was\n * previously called.\n *\n * @fires Tech#timeupdate\n */\n ;\n\n _proto.setCurrentTime = function setCurrentTime() {\n // improve the accuracy of manual timeupdates\n if (this.manualTimeUpdates) {\n /**\n * A manual `timeupdate` event.\n *\n * @event Tech#timeupdate\n * @type {EventTarget~Event}\n */\n this.trigger({\n type: 'timeupdate',\n target: this,\n manuallyTriggered: true\n });\n }\n }\n /**\n * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and\n * {@link TextTrackList} events.\n *\n * This adds {@link EventTarget~EventListeners} for `addtrack`, and `removetrack`.\n *\n * @fires Tech#audiotrackchange\n * @fires Tech#videotrackchange\n * @fires Tech#texttrackchange\n */\n ;\n\n _proto.initTrackListeners = function initTrackListeners() {\n var _this4 = this;\n\n /**\n * Triggered when tracks are added or removed on the Tech {@link AudioTrackList}\n *\n * @event Tech#audiotrackchange\n * @type {EventTarget~Event}\n */\n\n /**\n * Triggered when tracks are added or removed on the Tech {@link VideoTrackList}\n *\n * @event Tech#videotrackchange\n * @type {EventTarget~Event}\n */\n\n /**\n * Triggered when tracks are added or removed on the Tech {@link TextTrackList}\n *\n * @event Tech#texttrackchange\n * @type {EventTarget~Event}\n */\n NORMAL.names.forEach(function (name) {\n var props = NORMAL[name];\n\n var trackListChanges = function trackListChanges() {\n _this4.trigger(name + \"trackchange\");\n };\n\n var tracks = _this4[props.getterName]();\n\n tracks.addEventListener('removetrack', trackListChanges);\n tracks.addEventListener('addtrack', trackListChanges);\n\n _this4.on('dispose', function () {\n tracks.removeEventListener('removetrack', trackListChanges);\n tracks.removeEventListener('addtrack', trackListChanges);\n });\n });\n }\n /**\n * Emulate TextTracks using vtt.js if necessary\n *\n * @fires Tech#vttjsloaded\n * @fires Tech#vttjserror\n */\n ;\n\n _proto.addWebVttScript_ = function addWebVttScript_() {\n var _this5 = this;\n\n if (window$1.WebVTT) {\n return;\n } // Initially, Tech.el_ is a child of a dummy-div wait until the Component system\n // signals that the Tech is ready at which point Tech.el_ is part of the DOM\n // before inserting the WebVTT script\n\n\n if (document.body.contains(this.el())) {\n // load via require if available and vtt.js script location was not passed in\n // as an option. novtt builds will turn the above require call into an empty object\n // which will cause this if check to always fail.\n if (!this.options_['vtt.js'] && isPlain(vtt) && Object.keys(vtt).length > 0) {\n this.trigger('vttjsloaded');\n return;\n } // load vtt.js via the script location option or the cdn of no location was\n // passed in\n\n\n var script = document.createElement('script');\n script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js';\n\n script.onload = function () {\n /**\n * Fired when vtt.js is loaded.\n *\n * @event Tech#vttjsloaded\n * @type {EventTarget~Event}\n */\n _this5.trigger('vttjsloaded');\n };\n\n script.onerror = function () {\n /**\n * Fired when vtt.js was not loaded due to an error\n *\n * @event Tech#vttjsloaded\n * @type {EventTarget~Event}\n */\n _this5.trigger('vttjserror');\n };\n\n this.on('dispose', function () {\n script.onload = null;\n script.onerror = null;\n }); // but have not loaded yet and we set it to true before the inject so that\n // we don't overwrite the injected window.WebVTT if it loads right away\n\n window$1.WebVTT = true;\n this.el().parentNode.appendChild(script);\n } else {\n this.ready(this.addWebVttScript_);\n }\n }\n /**\n * Emulate texttracks\n *\n */\n ;\n\n _proto.emulateTextTracks = function emulateTextTracks() {\n var _this6 = this;\n\n var tracks = this.textTracks();\n var remoteTracks = this.remoteTextTracks();\n\n var handleAddTrack = function handleAddTrack(e) {\n return tracks.addTrack(e.track);\n };\n\n var handleRemoveTrack = function handleRemoveTrack(e) {\n return tracks.removeTrack(e.track);\n };\n\n remoteTracks.on('addtrack', handleAddTrack);\n remoteTracks.on('removetrack', handleRemoveTrack);\n this.addWebVttScript_();\n\n var updateDisplay = function updateDisplay() {\n return _this6.trigger('texttrackchange');\n };\n\n var textTracksChanges = function textTracksChanges() {\n updateDisplay();\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i];\n track.removeEventListener('cuechange', updateDisplay);\n\n if (track.mode === 'showing') {\n track.addEventListener('cuechange', updateDisplay);\n }\n }\n };\n\n textTracksChanges();\n tracks.addEventListener('change', textTracksChanges);\n tracks.addEventListener('addtrack', textTracksChanges);\n tracks.addEventListener('removetrack', textTracksChanges);\n this.on('dispose', function () {\n remoteTracks.off('addtrack', handleAddTrack);\n remoteTracks.off('removetrack', handleRemoveTrack);\n tracks.removeEventListener('change', textTracksChanges);\n tracks.removeEventListener('addtrack', textTracksChanges);\n tracks.removeEventListener('removetrack', textTracksChanges);\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i];\n track.removeEventListener('cuechange', updateDisplay);\n }\n });\n }\n /**\n * Create and returns a remote {@link TextTrack} object.\n *\n * @param {string} kind\n * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n *\n * @param {string} [label]\n * Label to identify the text track\n *\n * @param {string} [language]\n * Two letter language abbreviation\n *\n * @return {TextTrack}\n * The TextTrack that gets created.\n */\n ;\n\n _proto.addTextTrack = function addTextTrack(kind, label, language) {\n if (!kind) {\n throw new Error('TextTrack kind is required but was not provided');\n }\n\n return createTrackHelper(this, kind, label, language);\n }\n /**\n * Create an emulated TextTrack for use by addRemoteTextTrack\n *\n * This is intended to be overridden by classes that inherit from\n * Tech in order to create native or custom TextTracks.\n *\n * @param {Object} options\n * The object should contain the options to initialize the TextTrack with.\n *\n * @param {string} [options.kind]\n * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n *\n * @param {string} [options.label].\n * Label to identify the text track\n *\n * @param {string} [options.language]\n * Two letter language abbreviation.\n *\n * @return {HTMLTrackElement}\n * The track element that gets created.\n */\n ;\n\n _proto.createRemoteTextTrack = function createRemoteTextTrack(options) {\n var track = mergeOptions$3(options, {\n tech: this\n });\n return new REMOTE.remoteTextEl.TrackClass(track);\n }\n /**\n * Creates a remote text track object and returns an html track element.\n *\n * > Note: This can be an emulated {@link HTMLTrackElement} or a native one.\n *\n * @param {Object} options\n * See {@link Tech#createRemoteTextTrack} for more detailed properties.\n *\n * @param {boolean} [manualCleanup=true]\n * - When false: the TextTrack will be automatically removed from the video\n * element whenever the source changes\n * - When True: The TextTrack will have to be cleaned up manually\n *\n * @return {HTMLTrackElement}\n * An Html Track Element.\n *\n * @deprecated The default functionality for this function will be equivalent\n * to \"manualCleanup=false\" in the future. The manualCleanup parameter will\n * also be removed.\n */\n ;\n\n _proto.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {\n var _this7 = this;\n\n if (options === void 0) {\n options = {};\n }\n\n var htmlTrackElement = this.createRemoteTextTrack(options);\n\n if (manualCleanup !== true && manualCleanup !== false) {\n // deprecation warning\n log$1.warn('Calling addRemoteTextTrack without explicitly setting the \"manualCleanup\" parameter to `true` is deprecated and default to `false` in future version of video.js');\n manualCleanup = true;\n } // store HTMLTrackElement and TextTrack to remote list\n\n\n this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);\n this.remoteTextTracks().addTrack(htmlTrackElement.track);\n\n if (manualCleanup !== true) {\n // create the TextTrackList if it doesn't exist\n this.ready(function () {\n return _this7.autoRemoteTextTracks_.addTrack(htmlTrackElement.track);\n });\n }\n\n return htmlTrackElement;\n }\n /**\n * Remove a remote text track from the remote `TextTrackList`.\n *\n * @param {TextTrack} track\n * `TextTrack` to remove from the `TextTrackList`\n */\n ;\n\n _proto.removeRemoteTextTrack = function removeRemoteTextTrack(track) {\n var trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track); // remove HTMLTrackElement and TextTrack from remote list\n\n this.remoteTextTrackEls().removeTrackElement_(trackElement);\n this.remoteTextTracks().removeTrack(track);\n this.autoRemoteTextTracks_.removeTrack(track);\n }\n /**\n * Gets available media playback quality metrics as specified by the W3C's Media\n * Playback Quality API.\n *\n * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n *\n * @return {Object}\n * An object with supported media playback quality metrics\n *\n * @abstract\n */\n ;\n\n _proto.getVideoPlaybackQuality = function getVideoPlaybackQuality() {\n return {};\n }\n /**\n * Attempt to create a floating video window always on top of other windows\n * so that users may continue consuming media while they interact with other\n * content sites, or applications on their device.\n *\n * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n *\n * @return {Promise|undefined}\n * A promise with a Picture-in-Picture window if the browser supports\n * Promises (or one was passed in as an option). It returns undefined\n * otherwise.\n *\n * @abstract\n */\n ;\n\n _proto.requestPictureInPicture = function requestPictureInPicture() {\n var PromiseClass = this.options_.Promise || window$1.Promise;\n\n if (PromiseClass) {\n return PromiseClass.reject();\n }\n }\n /**\n * A method to check for the value of the 'disablePictureInPicture' property.\n * Defaults to true, as it should be considered disabled if the tech does not support pip\n *\n * @abstract\n */\n ;\n\n _proto.disablePictureInPicture = function disablePictureInPicture() {\n return true;\n }\n /**\n * A method to set or unset the 'disablePictureInPicture' property.\n *\n * @abstract\n */\n ;\n\n _proto.setDisablePictureInPicture = function setDisablePictureInPicture() {}\n /**\n * A fallback implementation of requestVideoFrameCallback using requestAnimationFrame\n *\n * @param {function} cb\n * @return {number} request id\n */\n ;\n\n _proto.requestVideoFrameCallback = function requestVideoFrameCallback(cb) {\n var _this8 = this;\n\n var id = newGUID();\n\n if (!this.isReady_ || this.paused()) {\n this.queuedHanders_.add(id);\n this.one('playing', function () {\n if (_this8.queuedHanders_.has(id)) {\n _this8.queuedHanders_[\"delete\"](id);\n\n cb();\n }\n });\n } else {\n this.requestNamedAnimationFrame(id, cb);\n }\n\n return id;\n }\n /**\n * A fallback implementation of cancelVideoFrameCallback\n *\n * @param {number} id id of callback to be cancelled\n */\n ;\n\n _proto.cancelVideoFrameCallback = function cancelVideoFrameCallback(id) {\n if (this.queuedHanders_.has(id)) {\n this.queuedHanders_[\"delete\"](id);\n } else {\n this.cancelNamedAnimationFrame(id);\n }\n }\n /**\n * A method to set a poster from a `Tech`.\n *\n * @abstract\n */\n ;\n\n _proto.setPoster = function setPoster() {}\n /**\n * A method to check for the presence of the 'playsinline' attribute.\n *\n * @abstract\n */\n ;\n\n _proto.playsinline = function playsinline() {}\n /**\n * A method to set or unset the 'playsinline' attribute.\n *\n * @abstract\n */\n ;\n\n _proto.setPlaysinline = function setPlaysinline() {}\n /**\n * Attempt to force override of native audio tracks.\n *\n * @param {boolean} override - If set to true native audio will be overridden,\n * otherwise native audio will potentially be used.\n *\n * @abstract\n */\n ;\n\n _proto.overrideNativeAudioTracks = function overrideNativeAudioTracks() {}\n /**\n * Attempt to force override of native video tracks.\n *\n * @param {boolean} override - If set to true native video will be overridden,\n * otherwise native video will potentially be used.\n *\n * @abstract\n */\n ;\n\n _proto.overrideNativeVideoTracks = function overrideNativeVideoTracks() {}\n /*\n * Check if the tech can support the given mime-type.\n *\n * The base tech does not support any type, but source handlers might\n * overwrite this.\n *\n * @param {string} type\n * The mimetype to check for support\n *\n * @return {string}\n * 'probably', 'maybe', or empty string\n *\n * @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType}\n *\n * @abstract\n */\n ;\n\n _proto.canPlayType = function canPlayType() {\n return '';\n }\n /**\n * Check if the type is supported by this tech.\n *\n * The base tech does not support any type, but source handlers might\n * overwrite this.\n *\n * @param {string} type\n * The media type to check\n * @return {string} Returns the native video element's response\n */\n ;\n\n Tech.canPlayType = function canPlayType() {\n return '';\n }\n /**\n * Check if the tech can support the given source\n *\n * @param {Object} srcObj\n * The source object\n * @param {Object} options\n * The options passed to the tech\n * @return {string} 'probably', 'maybe', or '' (empty string)\n */\n ;\n\n Tech.canPlaySource = function canPlaySource(srcObj, options) {\n return Tech.canPlayType(srcObj.type);\n }\n /*\n * Return whether the argument is a Tech or not.\n * Can be passed either a Class like `Html5` or a instance like `player.tech_`\n *\n * @param {Object} component\n * The item to check\n *\n * @return {boolean}\n * Whether it is a tech or not\n * - True if it is a tech\n * - False if it is not\n */\n ;\n\n Tech.isTech = function isTech(component) {\n return component.prototype instanceof Tech || component instanceof Tech || component === Tech;\n }\n /**\n * Registers a `Tech` into a shared list for videojs.\n *\n * @param {string} name\n * Name of the `Tech` to register.\n *\n * @param {Object} tech\n * The `Tech` class to register.\n */\n ;\n\n Tech.registerTech = function registerTech(name, tech) {\n if (!Tech.techs_) {\n Tech.techs_ = {};\n }\n\n if (!Tech.isTech(tech)) {\n throw new Error(\"Tech \" + name + \" must be a Tech\");\n }\n\n if (!Tech.canPlayType) {\n throw new Error('Techs must have a static canPlayType method on them');\n }\n\n if (!Tech.canPlaySource) {\n throw new Error('Techs must have a static canPlaySource method on them');\n }\n\n name = toTitleCase$1(name);\n Tech.techs_[name] = tech;\n Tech.techs_[toLowerCase(name)] = tech;\n\n if (name !== 'Tech') {\n // camel case the techName for use in techOrder\n Tech.defaultTechOrder_.push(name);\n }\n\n return tech;\n }\n /**\n * Get a `Tech` from the shared list by name.\n *\n * @param {string} name\n * `camelCase` or `TitleCase` name of the Tech to get\n *\n * @return {Tech|undefined}\n * The `Tech` or undefined if there was no tech with the name requested.\n */\n ;\n\n Tech.getTech = function getTech(name) {\n if (!name) {\n return;\n }\n\n if (Tech.techs_ && Tech.techs_[name]) {\n return Tech.techs_[name];\n }\n\n name = toTitleCase$1(name);\n\n if (window$1 && window$1.videojs && window$1.videojs[name]) {\n log$1.warn(\"The \" + name + \" tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)\");\n return window$1.videojs[name];\n }\n };\n\n return Tech;\n}(Component$1);\n/**\n * Get the {@link VideoTrackList}\n *\n * @returns {VideoTrackList}\n * @method Tech.prototype.videoTracks\n */\n\n/**\n * Get the {@link AudioTrackList}\n *\n * @returns {AudioTrackList}\n * @method Tech.prototype.audioTracks\n */\n\n/**\n * Get the {@link TextTrackList}\n *\n * @returns {TextTrackList}\n * @method Tech.prototype.textTracks\n */\n\n/**\n * Get the remote element {@link TextTrackList}\n *\n * @returns {TextTrackList}\n * @method Tech.prototype.remoteTextTracks\n */\n\n/**\n * Get the remote element {@link HtmlTrackElementList}\n *\n * @returns {HtmlTrackElementList}\n * @method Tech.prototype.remoteTextTrackEls\n */\n\n\nALL.names.forEach(function (name) {\n var props = ALL[name];\n\n Tech.prototype[props.getterName] = function () {\n this[props.privateName] = this[props.privateName] || new props.ListClass();\n return this[props.privateName];\n };\n});\n/**\n * List of associated text tracks\n *\n * @type {TextTrackList}\n * @private\n * @property Tech#textTracks_\n */\n\n/**\n * List of associated audio tracks.\n *\n * @type {AudioTrackList}\n * @private\n * @property Tech#audioTracks_\n */\n\n/**\n * List of associated video tracks.\n *\n * @type {VideoTrackList}\n * @private\n * @property Tech#videoTracks_\n */\n\n/**\n * Boolean indicating whether the `Tech` supports volume control.\n *\n * @type {boolean}\n * @default\n */\n\nTech.prototype.featuresVolumeControl = true;\n/**\n * Boolean indicating whether the `Tech` supports muting volume.\n *\n * @type {bolean}\n * @default\n */\n\nTech.prototype.featuresMuteControl = true;\n/**\n * Boolean indicating whether the `Tech` supports fullscreen resize control.\n * Resizing plugins using request fullscreen reloads the plugin\n *\n * @type {boolean}\n * @default\n */\n\nTech.prototype.featuresFullscreenResize = false;\n/**\n * Boolean indicating whether the `Tech` supports changing the speed at which the video\n * plays. Examples:\n * - Set player to play 2x (twice) as fast\n * - Set player to play 0.5x (half) as fast\n *\n * @type {boolean}\n * @default\n */\n\nTech.prototype.featuresPlaybackRate = false;\n/**\n * Boolean indicating whether the `Tech` supports the `progress` event. This is currently\n * not triggered by video-js-swf. This will be used to determine if\n * {@link Tech#manualProgressOn} should be called.\n *\n * @type {boolean}\n * @default\n */\n\nTech.prototype.featuresProgressEvents = false;\n/**\n * Boolean indicating whether the `Tech` supports the `sourceset` event.\n *\n * A tech should set this to `true` and then use {@link Tech#triggerSourceset}\n * to trigger a {@link Tech#event:sourceset} at the earliest time after getting\n * a new source.\n *\n * @type {boolean}\n * @default\n */\n\nTech.prototype.featuresSourceset = false;\n/**\n * Boolean indicating whether the `Tech` supports the `timeupdate` event. This is currently\n * not triggered by video-js-swf. This will be used to determine if\n * {@link Tech#manualTimeUpdates} should be called.\n *\n * @type {boolean}\n * @default\n */\n\nTech.prototype.featuresTimeupdateEvents = false;\n/**\n * Boolean indicating whether the `Tech` supports the native `TextTrack`s.\n * This will help us integrate with native `TextTrack`s if the browser supports them.\n *\n * @type {boolean}\n * @default\n */\n\nTech.prototype.featuresNativeTextTracks = false;\n/**\n * Boolean indicating whether the `Tech` supports `requestVideoFrameCallback`.\n *\n * @type {boolean}\n * @default\n */\n\nTech.prototype.featuresVideoFrameCallback = false;\n/**\n * A functional mixin for techs that want to use the Source Handler pattern.\n * Source handlers are scripts for handling specific formats.\n * The source handler pattern is used for adaptive formats (HLS, DASH) that\n * manually load video data and feed it into a Source Buffer (Media Source Extensions)\n * Example: `Tech.withSourceHandlers.call(MyTech);`\n *\n * @param {Tech} _Tech\n * The tech to add source handler functions to.\n *\n * @mixes Tech~SourceHandlerAdditions\n */\n\nTech.withSourceHandlers = function (_Tech) {\n /**\n * Register a source handler\n *\n * @param {Function} handler\n * The source handler class\n *\n * @param {number} [index]\n * Register it at the following index\n */\n _Tech.registerSourceHandler = function (handler, index) {\n var handlers = _Tech.sourceHandlers;\n\n if (!handlers) {\n handlers = _Tech.sourceHandlers = [];\n }\n\n if (index === undefined) {\n // add to the end of the list\n index = handlers.length;\n }\n\n handlers.splice(index, 0, handler);\n };\n /**\n * Check if the tech can support the given type. Also checks the\n * Techs sourceHandlers.\n *\n * @param {string} type\n * The mimetype to check.\n *\n * @return {string}\n * 'probably', 'maybe', or '' (empty string)\n */\n\n\n _Tech.canPlayType = function (type) {\n var handlers = _Tech.sourceHandlers || [];\n var can;\n\n for (var i = 0; i < handlers.length; i++) {\n can = handlers[i].canPlayType(type);\n\n if (can) {\n return can;\n }\n }\n\n return '';\n };\n /**\n * Returns the first source handler that supports the source.\n *\n * TODO: Answer question: should 'probably' be prioritized over 'maybe'\n *\n * @param {Tech~SourceObject} source\n * The source object\n *\n * @param {Object} options\n * The options passed to the tech\n *\n * @return {SourceHandler|null}\n * The first source handler that supports the source or null if\n * no SourceHandler supports the source\n */\n\n\n _Tech.selectSourceHandler = function (source, options) {\n var handlers = _Tech.sourceHandlers || [];\n var can;\n\n for (var i = 0; i < handlers.length; i++) {\n can = handlers[i].canHandleSource(source, options);\n\n if (can) {\n return handlers[i];\n }\n }\n\n return null;\n };\n /**\n * Check if the tech can support the given source.\n *\n * @param {Tech~SourceObject} srcObj\n * The source object\n *\n * @param {Object} options\n * The options passed to the tech\n *\n * @return {string}\n * 'probably', 'maybe', or '' (empty string)\n */\n\n\n _Tech.canPlaySource = function (srcObj, options) {\n var sh = _Tech.selectSourceHandler(srcObj, options);\n\n if (sh) {\n return sh.canHandleSource(srcObj, options);\n }\n\n return '';\n };\n /**\n * When using a source handler, prefer its implementation of\n * any function normally provided by the tech.\n */\n\n\n var deferrable = ['seekable', 'seeking', 'duration'];\n /**\n * A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable\n * function if it exists, with a fallback to the Techs seekable function.\n *\n * @method _Tech.seekable\n */\n\n /**\n * A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration\n * function if it exists, otherwise it will fallback to the techs duration function.\n *\n * @method _Tech.duration\n */\n\n deferrable.forEach(function (fnName) {\n var originalFn = this[fnName];\n\n if (typeof originalFn !== 'function') {\n return;\n }\n\n this[fnName] = function () {\n if (this.sourceHandler_ && this.sourceHandler_[fnName]) {\n return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments);\n }\n\n return originalFn.apply(this, arguments);\n };\n }, _Tech.prototype);\n /**\n * Create a function for setting the source using a source object\n * and source handlers.\n * Should never be called unless a source handler was found.\n *\n * @param {Tech~SourceObject} source\n * A source object with src and type keys\n */\n\n _Tech.prototype.setSource = function (source) {\n var sh = _Tech.selectSourceHandler(source, this.options_);\n\n if (!sh) {\n // Fall back to a native source hander when unsupported sources are\n // deliberately set\n if (_Tech.nativeSourceHandler) {\n sh = _Tech.nativeSourceHandler;\n } else {\n log$1.error('No source handler found for the current source.');\n }\n } // Dispose any existing source handler\n\n\n this.disposeSourceHandler();\n this.off('dispose', this.disposeSourceHandler_);\n\n if (sh !== _Tech.nativeSourceHandler) {\n this.currentSource_ = source;\n }\n\n this.sourceHandler_ = sh.handleSource(source, this, this.options_);\n this.one('dispose', this.disposeSourceHandler_);\n };\n /**\n * Clean up any existing SourceHandlers and listeners when the Tech is disposed.\n *\n * @listens Tech#dispose\n */\n\n\n _Tech.prototype.disposeSourceHandler = function () {\n // if we have a source and get another one\n // then we are loading something new\n // than clear all of our current tracks\n if (this.currentSource_) {\n this.clearTracks(['audio', 'video']);\n this.currentSource_ = null;\n } // always clean up auto-text tracks\n\n\n this.cleanupAutoTextTracks();\n\n if (this.sourceHandler_) {\n if (this.sourceHandler_.dispose) {\n this.sourceHandler_.dispose();\n }\n\n this.sourceHandler_ = null;\n }\n };\n}; // The base Tech class needs to be registered as a Component. It is the only\n// Tech that can be registered as a Component.\n\n\nComponent$1.registerComponent('Tech', Tech);\nTech.registerTech('Tech', Tech);\n/**\n * A list of techs that should be added to techOrder on Players\n *\n * @private\n */\n\nTech.defaultTechOrder_ = [];\n\n/**\n * @file middleware.js\n * @module middleware\n */\nvar middlewares = {};\nvar middlewareInstances = {};\nvar TERMINATOR = {};\n/**\n * A middleware object is a plain JavaScript object that has methods that\n * match the {@link Tech} methods found in the lists of allowed\n * {@link module:middleware.allowedGetters|getters},\n * {@link module:middleware.allowedSetters|setters}, and\n * {@link module:middleware.allowedMediators|mediators}.\n *\n * @typedef {Object} MiddlewareObject\n */\n\n/**\n * A middleware factory function that should return a\n * {@link module:middleware~MiddlewareObject|MiddlewareObject}.\n *\n * This factory will be called for each player when needed, with the player\n * passed in as an argument.\n *\n * @callback MiddlewareFactory\n * @param {Player} player\n * A Video.js player.\n */\n\n/**\n * Define a middleware that the player should use by way of a factory function\n * that returns a middleware object.\n *\n * @param {string} type\n * The MIME type to match or `\"*\"` for all MIME types.\n *\n * @param {MiddlewareFactory} middleware\n * A middleware factory function that will be executed for\n * matching types.\n */\n\nfunction use(type, middleware) {\n middlewares[type] = middlewares[type] || [];\n middlewares[type].push(middleware);\n}\n/**\n * Asynchronously sets a source using middleware by recursing through any\n * matching middlewares and calling `setSource` on each, passing along the\n * previous returned value each time.\n *\n * @param {Player} player\n * A {@link Player} instance.\n *\n * @param {Tech~SourceObject} src\n * A source object.\n *\n * @param {Function}\n * The next middleware to run.\n */\n\nfunction setSource(player, src, next) {\n player.setTimeout(function () {\n return setSourceHelper(src, middlewares[src.type], next, player);\n }, 1);\n}\n/**\n * When the tech is set, passes the tech to each middleware's `setTech` method.\n *\n * @param {Object[]} middleware\n * An array of middleware instances.\n *\n * @param {Tech} tech\n * A Video.js tech.\n */\n\nfunction setTech(middleware, tech) {\n middleware.forEach(function (mw) {\n return mw.setTech && mw.setTech(tech);\n });\n}\n/**\n * Calls a getter on the tech first, through each middleware\n * from right to left to the player.\n *\n * @param {Object[]} middleware\n * An array of middleware instances.\n *\n * @param {Tech} tech\n * The current tech.\n *\n * @param {string} method\n * A method name.\n *\n * @return {Mixed}\n * The final value from the tech after middleware has intercepted it.\n */\n\nfunction get(middleware, tech, method) {\n return middleware.reduceRight(middlewareIterator(method), tech[method]());\n}\n/**\n * Takes the argument given to the player and calls the setter method on each\n * middleware from left to right to the tech.\n *\n * @param {Object[]} middleware\n * An array of middleware instances.\n *\n * @param {Tech} tech\n * The current tech.\n *\n * @param {string} method\n * A method name.\n *\n * @param {Mixed} arg\n * The value to set on the tech.\n *\n * @return {Mixed}\n * The return value of the `method` of the `tech`.\n */\n\nfunction set(middleware, tech, method, arg) {\n return tech[method](middleware.reduce(middlewareIterator(method), arg));\n}\n/**\n * Takes the argument given to the player and calls the `call` version of the\n * method on each middleware from left to right.\n *\n * Then, call the passed in method on the tech and return the result unchanged\n * back to the player, through middleware, this time from right to left.\n *\n * @param {Object[]} middleware\n * An array of middleware instances.\n *\n * @param {Tech} tech\n * The current tech.\n *\n * @param {string} method\n * A method name.\n *\n * @param {Mixed} arg\n * The value to set on the tech.\n *\n * @return {Mixed}\n * The return value of the `method` of the `tech`, regardless of the\n * return values of middlewares.\n */\n\nfunction mediate(middleware, tech, method, arg) {\n if (arg === void 0) {\n arg = null;\n }\n\n var callMethod = 'call' + toTitleCase$1(method);\n var middlewareValue = middleware.reduce(middlewareIterator(callMethod), arg);\n var terminated = middlewareValue === TERMINATOR; // deprecated. The `null` return value should instead return TERMINATOR to\n // prevent confusion if a techs method actually returns null.\n\n var returnValue = terminated ? null : tech[method](middlewareValue);\n executeRight(middleware, method, returnValue, terminated);\n return returnValue;\n}\n/**\n * Enumeration of allowed getters where the keys are method names.\n *\n * @type {Object}\n */\n\nvar allowedGetters = {\n buffered: 1,\n currentTime: 1,\n duration: 1,\n muted: 1,\n played: 1,\n paused: 1,\n seekable: 1,\n volume: 1,\n ended: 1\n};\n/**\n * Enumeration of allowed setters where the keys are method names.\n *\n * @type {Object}\n */\n\nvar allowedSetters = {\n setCurrentTime: 1,\n setMuted: 1,\n setVolume: 1\n};\n/**\n * Enumeration of allowed mediators where the keys are method names.\n *\n * @type {Object}\n */\n\nvar allowedMediators = {\n play: 1,\n pause: 1\n};\n\nfunction middlewareIterator(method) {\n return function (value, mw) {\n // if the previous middleware terminated, pass along the termination\n if (value === TERMINATOR) {\n return TERMINATOR;\n }\n\n if (mw[method]) {\n return mw[method](value);\n }\n\n return value;\n };\n}\n\nfunction executeRight(mws, method, value, terminated) {\n for (var i = mws.length - 1; i >= 0; i--) {\n var mw = mws[i];\n\n if (mw[method]) {\n mw[method](terminated, value);\n }\n }\n}\n/**\n * Clear the middleware cache for a player.\n *\n * @param {Player} player\n * A {@link Player} instance.\n */\n\n\nfunction clearCacheForPlayer(player) {\n middlewareInstances[player.id()] = null;\n}\n/**\n * {\n * [playerId]: [[mwFactory, mwInstance], ...]\n * }\n *\n * @private\n */\n\nfunction getOrCreateFactory(player, mwFactory) {\n var mws = middlewareInstances[player.id()];\n var mw = null;\n\n if (mws === undefined || mws === null) {\n mw = mwFactory(player);\n middlewareInstances[player.id()] = [[mwFactory, mw]];\n return mw;\n }\n\n for (var i = 0; i < mws.length; i++) {\n var _mws$i = mws[i],\n mwf = _mws$i[0],\n mwi = _mws$i[1];\n\n if (mwf !== mwFactory) {\n continue;\n }\n\n mw = mwi;\n }\n\n if (mw === null) {\n mw = mwFactory(player);\n mws.push([mwFactory, mw]);\n }\n\n return mw;\n}\n\nfunction setSourceHelper(src, middleware, next, player, acc, lastRun) {\n if (src === void 0) {\n src = {};\n }\n\n if (middleware === void 0) {\n middleware = [];\n }\n\n if (acc === void 0) {\n acc = [];\n }\n\n if (lastRun === void 0) {\n lastRun = false;\n }\n\n var _middleware = middleware,\n mwFactory = _middleware[0],\n mwrest = _middleware.slice(1); // if mwFactory is a string, then we're at a fork in the road\n\n\n if (typeof mwFactory === 'string') {\n setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun); // if we have an mwFactory, call it with the player to get the mw,\n // then call the mw's setSource method\n } else if (mwFactory) {\n var mw = getOrCreateFactory(player, mwFactory); // if setSource isn't present, implicitly select this middleware\n\n if (!mw.setSource) {\n acc.push(mw);\n return setSourceHelper(src, mwrest, next, player, acc, lastRun);\n }\n\n mw.setSource(assign({}, src), function (err, _src) {\n // something happened, try the next middleware on the current level\n // make sure to use the old src\n if (err) {\n return setSourceHelper(src, mwrest, next, player, acc, lastRun);\n } // we've succeeded, now we need to go deeper\n\n\n acc.push(mw); // if it's the same type, continue down the current chain\n // otherwise, we want to go down the new chain\n\n setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun);\n });\n } else if (mwrest.length) {\n setSourceHelper(src, mwrest, next, player, acc, lastRun);\n } else if (lastRun) {\n next(src, acc);\n } else {\n setSourceHelper(src, middlewares['*'], next, player, acc, true);\n }\n}\n\n/**\n * Mimetypes\n *\n * @see https://www.iana.org/assignments/media-types/media-types.xhtml\n * @typedef Mimetypes~Kind\n * @enum\n */\n\nvar MimetypesKind = {\n opus: 'video/ogg',\n ogv: 'video/ogg',\n mp4: 'video/mp4',\n mov: 'video/mp4',\n m4v: 'video/mp4',\n mkv: 'video/x-matroska',\n m4a: 'audio/mp4',\n mp3: 'audio/mpeg',\n aac: 'audio/aac',\n caf: 'audio/x-caf',\n flac: 'audio/flac',\n oga: 'audio/ogg',\n wav: 'audio/wav',\n m3u8: 'application/x-mpegURL',\n mpd: 'application/dash+xml',\n jpg: 'image/jpeg',\n jpeg: 'image/jpeg',\n gif: 'image/gif',\n png: 'image/png',\n svg: 'image/svg+xml',\n webp: 'image/webp'\n};\n/**\n * Get the mimetype of a given src url if possible\n *\n * @param {string} src\n * The url to the src\n *\n * @return {string}\n * return the mimetype if it was known or empty string otherwise\n */\n\nvar getMimetype = function getMimetype(src) {\n if (src === void 0) {\n src = '';\n }\n\n var ext = getFileExtension(src);\n var mimetype = MimetypesKind[ext.toLowerCase()];\n return mimetype || '';\n};\n/**\n * Find the mime type of a given source string if possible. Uses the player\n * source cache.\n *\n * @param {Player} player\n * The player object\n *\n * @param {string} src\n * The source string\n *\n * @return {string}\n * The type that was found\n */\n\nvar findMimetype = function findMimetype(player, src) {\n if (!src) {\n return '';\n } // 1. check for the type in the `source` cache\n\n\n if (player.cache_.source.src === src && player.cache_.source.type) {\n return player.cache_.source.type;\n } // 2. see if we have this source in our `currentSources` cache\n\n\n var matchingSources = player.cache_.sources.filter(function (s) {\n return s.src === src;\n });\n\n if (matchingSources.length) {\n return matchingSources[0].type;\n } // 3. look for the src url in source elements and use the type there\n\n\n var sources = player.$$('source');\n\n for (var i = 0; i < sources.length; i++) {\n var s = sources[i];\n\n if (s.type && s.src && s.src === src) {\n return s.type;\n }\n } // 4. finally fallback to our list of mime types based on src url extension\n\n\n return getMimetype(src);\n};\n\n/**\n * @module filter-source\n */\n/**\n * Filter out single bad source objects or multiple source objects in an\n * array. Also flattens nested source object arrays into a 1 dimensional\n * array of source objects.\n *\n * @param {Tech~SourceObject|Tech~SourceObject[]} src\n * The src object to filter\n *\n * @return {Tech~SourceObject[]}\n * An array of sourceobjects containing only valid sources\n *\n * @private\n */\n\nvar filterSource = function filterSource(src) {\n // traverse array\n if (Array.isArray(src)) {\n var newsrc = [];\n src.forEach(function (srcobj) {\n srcobj = filterSource(srcobj);\n\n if (Array.isArray(srcobj)) {\n newsrc = newsrc.concat(srcobj);\n } else if (isObject(srcobj)) {\n newsrc.push(srcobj);\n }\n });\n src = newsrc;\n } else if (typeof src === 'string' && src.trim()) {\n // convert string into object\n src = [fixSource({\n src: src\n })];\n } else if (isObject(src) && typeof src.src === 'string' && src.src && src.src.trim()) {\n // src is already valid\n src = [fixSource(src)];\n } else {\n // invalid source, turn it into an empty array\n src = [];\n }\n\n return src;\n};\n/**\n * Checks src mimetype, adding it when possible\n *\n * @param {Tech~SourceObject} src\n * The src object to check\n * @return {Tech~SourceObject}\n * src Object with known type\n */\n\n\nfunction fixSource(src) {\n if (!src.type) {\n var mimetype = getMimetype(src.src);\n\n if (mimetype) {\n src.type = mimetype;\n }\n }\n\n return src;\n}\n\n/**\n * The `MediaLoader` is the `Component` that decides which playback technology to load\n * when a player is initialized.\n *\n * @extends Component\n */\n\nvar MediaLoader = /*#__PURE__*/function (_Component) {\n _inheritsLoose(MediaLoader, _Component);\n\n /**\n * Create an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should attach to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} [ready]\n * The function that is run when this component is ready.\n */\n function MediaLoader(player, options, ready) {\n var _this;\n\n // MediaLoader has no element\n var options_ = mergeOptions$3({\n createEl: false\n }, options);\n _this = _Component.call(this, player, options_, ready) || this; // If there are no sources when the player is initialized,\n // load the first supported playback technology.\n\n if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) {\n for (var i = 0, j = options.playerOptions.techOrder; i < j.length; i++) {\n var techName = toTitleCase$1(j[i]);\n var tech = Tech.getTech(techName); // Support old behavior of techs being registered as components.\n // Remove once that deprecated behavior is removed.\n\n if (!techName) {\n tech = Component$1.getComponent(techName);\n } // Check if the browser supports this technology\n\n\n if (tech && tech.isSupported()) {\n player.loadTech_(techName);\n break;\n }\n }\n } else {\n // Loop through playback technologies (e.g. HTML5) and check for support.\n // Then load the best source.\n // A few assumptions here:\n // All playback technologies respect preload false.\n player.src(options.playerOptions.sources);\n }\n\n return _this;\n }\n\n return MediaLoader;\n}(Component$1);\n\nComponent$1.registerComponent('MediaLoader', MediaLoader);\n\n/**\n * Component which is clickable or keyboard actionable, but is not a\n * native HTML button.\n *\n * @extends Component\n */\n\nvar ClickableComponent = /*#__PURE__*/function (_Component) {\n _inheritsLoose(ClickableComponent, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of component options.\n *\n * @param {function} [options.clickHandler]\n * The function to call when the button is clicked / activated\n *\n * @param {string} [options.controlText]\n * The text to set on the button\n *\n * @param {string} [options.className]\n * A class or space separated list of classes to add the component\n *\n */\n function ClickableComponent(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n\n if (_this.options_.controlText) {\n _this.controlText(_this.options_.controlText);\n }\n\n _this.handleMouseOver_ = function (e) {\n return _this.handleMouseOver(e);\n };\n\n _this.handleMouseOut_ = function (e) {\n return _this.handleMouseOut(e);\n };\n\n _this.handleClick_ = function (e) {\n return _this.handleClick(e);\n };\n\n _this.handleKeyDown_ = function (e) {\n return _this.handleKeyDown(e);\n };\n\n _this.emitTapEvents();\n\n _this.enable();\n\n return _this;\n }\n /**\n * Create the `ClickableComponent`s DOM element.\n *\n * @param {string} [tag=div]\n * The element's node type.\n *\n * @param {Object} [props={}]\n * An object of properties that should be set on the element.\n *\n * @param {Object} [attributes={}]\n * An object of attributes that should be set on the element.\n *\n * @return {Element}\n * The element that gets created.\n */\n\n\n var _proto = ClickableComponent.prototype;\n\n _proto.createEl = function createEl$1(tag, props, attributes) {\n if (tag === void 0) {\n tag = 'div';\n }\n\n if (props === void 0) {\n props = {};\n }\n\n if (attributes === void 0) {\n attributes = {};\n }\n\n props = assign({\n className: this.buildCSSClass(),\n tabIndex: 0\n }, props);\n\n if (tag === 'button') {\n log$1.error(\"Creating a ClickableComponent with an HTML element of \" + tag + \" is not supported; use a Button instead.\");\n } // Add ARIA attributes for clickable element which is not a native HTML button\n\n\n attributes = assign({\n role: 'button'\n }, attributes);\n this.tabIndex_ = props.tabIndex;\n var el = createEl(tag, props, attributes);\n el.appendChild(createEl('span', {\n className: 'vjs-icon-placeholder'\n }, {\n 'aria-hidden': true\n }));\n this.createControlTextEl(el);\n return el;\n };\n\n _proto.dispose = function dispose() {\n // remove controlTextEl_ on dispose\n this.controlTextEl_ = null;\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Create a control text element on this `ClickableComponent`\n *\n * @param {Element} [el]\n * Parent element for the control text.\n *\n * @return {Element}\n * The control text element that gets created.\n */\n ;\n\n _proto.createControlTextEl = function createControlTextEl(el) {\n this.controlTextEl_ = createEl('span', {\n className: 'vjs-control-text'\n }, {\n // let the screen reader user know that the text of the element may change\n 'aria-live': 'polite'\n });\n\n if (el) {\n el.appendChild(this.controlTextEl_);\n }\n\n this.controlText(this.controlText_, el);\n return this.controlTextEl_;\n }\n /**\n * Get or set the localize text to use for the controls on the `ClickableComponent`.\n *\n * @param {string} [text]\n * Control text for element.\n *\n * @param {Element} [el=this.el()]\n * Element to set the title on.\n *\n * @return {string}\n * - The control text when getting\n */\n ;\n\n _proto.controlText = function controlText(text, el) {\n if (el === void 0) {\n el = this.el();\n }\n\n if (text === undefined) {\n return this.controlText_ || 'Need Text';\n }\n\n var localizedText = this.localize(text);\n this.controlText_ = text;\n textContent(this.controlTextEl_, localizedText);\n\n if (!this.nonIconControl && !this.player_.options_.noUITitleAttributes) {\n // Set title attribute if only an icon is shown\n el.setAttribute('title', localizedText);\n }\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n ;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-control vjs-button \" + _Component.prototype.buildCSSClass.call(this);\n }\n /**\n * Enable this `ClickableComponent`\n */\n ;\n\n _proto.enable = function enable() {\n if (!this.enabled_) {\n this.enabled_ = true;\n this.removeClass('vjs-disabled');\n this.el_.setAttribute('aria-disabled', 'false');\n\n if (typeof this.tabIndex_ !== 'undefined') {\n this.el_.setAttribute('tabIndex', this.tabIndex_);\n }\n\n this.on(['tap', 'click'], this.handleClick_);\n this.on('keydown', this.handleKeyDown_);\n }\n }\n /**\n * Disable this `ClickableComponent`\n */\n ;\n\n _proto.disable = function disable() {\n this.enabled_ = false;\n this.addClass('vjs-disabled');\n this.el_.setAttribute('aria-disabled', 'true');\n\n if (typeof this.tabIndex_ !== 'undefined') {\n this.el_.removeAttribute('tabIndex');\n }\n\n this.off('mouseover', this.handleMouseOver_);\n this.off('mouseout', this.handleMouseOut_);\n this.off(['tap', 'click'], this.handleClick_);\n this.off('keydown', this.handleKeyDown_);\n }\n /**\n * Handles language change in ClickableComponent for the player in components\n *\n *\n */\n ;\n\n _proto.handleLanguagechange = function handleLanguagechange() {\n this.controlText(this.controlText_);\n }\n /**\n * Event handler that is called when a `ClickableComponent` receives a\n * `click` or `tap` event.\n *\n * @param {EventTarget~Event} event\n * The `tap` or `click` event that caused this function to be called.\n *\n * @listens tap\n * @listens click\n * @abstract\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n if (this.options_.clickHandler) {\n this.options_.clickHandler.call(this, arguments);\n }\n }\n /**\n * Event handler that is called when a `ClickableComponent` receives a\n * `keydown` event.\n *\n * By default, if the key is Space or Enter, it will trigger a `click` event.\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n // Support Space or Enter key operation to fire a click event. Also,\n // prevent the event from propagating through the DOM and triggering\n // Player hotkeys.\n if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n event.preventDefault();\n event.stopPropagation();\n this.trigger('click');\n } else {\n // Pass keypress handling up for unsupported keys\n _Component.prototype.handleKeyDown.call(this, event);\n }\n };\n\n return ClickableComponent;\n}(Component$1);\n\nComponent$1.registerComponent('ClickableComponent', ClickableComponent);\n\n/**\n * A `ClickableComponent` that handles showing the poster image for the player.\n *\n * @extends ClickableComponent\n */\n\nvar PosterImage = /*#__PURE__*/function (_ClickableComponent) {\n _inheritsLoose(PosterImage, _ClickableComponent);\n\n /**\n * Create an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should attach to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function PosterImage(player, options) {\n var _this;\n\n _this = _ClickableComponent.call(this, player, options) || this;\n\n _this.update();\n\n _this.update_ = function (e) {\n return _this.update(e);\n };\n\n player.on('posterchange', _this.update_);\n return _this;\n }\n /**\n * Clean up and dispose of the `PosterImage`.\n */\n\n\n var _proto = PosterImage.prototype;\n\n _proto.dispose = function dispose() {\n this.player().off('posterchange', this.update_);\n\n _ClickableComponent.prototype.dispose.call(this);\n }\n /**\n * Create the `PosterImage`s DOM element.\n *\n * @return {Element}\n * The element that gets created.\n */\n ;\n\n _proto.createEl = function createEl$1() {\n var el = createEl('div', {\n className: 'vjs-poster',\n // Don't want poster to be tabbable.\n tabIndex: -1\n });\n return el;\n }\n /**\n * An {@link EventTarget~EventListener} for {@link Player#posterchange} events.\n *\n * @listens Player#posterchange\n *\n * @param {EventTarget~Event} [event]\n * The `Player#posterchange` event that triggered this function.\n */\n ;\n\n _proto.update = function update(event) {\n var url = this.player().poster();\n this.setSrc(url); // If there's no poster source we should display:none on this component\n // so it's not still clickable or right-clickable\n\n if (url) {\n this.show();\n } else {\n this.hide();\n }\n }\n /**\n * Set the source of the `PosterImage` depending on the display method.\n *\n * @param {string} url\n * The URL to the source for the `PosterImage`.\n */\n ;\n\n _proto.setSrc = function setSrc(url) {\n var backgroundImage = ''; // Any falsy value should stay as an empty string, otherwise\n // this will throw an extra error\n\n if (url) {\n backgroundImage = \"url(\\\"\" + url + \"\\\")\";\n }\n\n this.el_.style.backgroundImage = backgroundImage;\n }\n /**\n * An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See\n * {@link ClickableComponent#handleClick} for instances where this will be triggered.\n *\n * @listens tap\n * @listens click\n * @listens keydown\n *\n * @param {EventTarget~Event} event\n + The `click`, `tap` or `keydown` event that caused this function to be called.\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n // We don't want a click to trigger playback when controls are disabled\n if (!this.player_.controls()) {\n return;\n }\n\n var sourceIsEncrypted = this.player_.usingPlugin('eme') && this.player_.eme.sessions && this.player_.eme.sessions.length > 0;\n\n if (this.player_.tech(true) && // We've observed a bug in IE and Edge when playing back DRM content where\n // calling .focus() on the video element causes the video to go black,\n // so we avoid it in that specific case\n !((IE_VERSION || IS_EDGE) && sourceIsEncrypted)) {\n this.player_.tech(true).focus();\n }\n\n if (this.player_.paused()) {\n silencePromise(this.player_.play());\n } else {\n this.player_.pause();\n }\n };\n\n return PosterImage;\n}(ClickableComponent);\n\nComponent$1.registerComponent('PosterImage', PosterImage);\n\nvar darkGray = '#222';\nvar lightGray = '#ccc';\nvar fontMap = {\n monospace: 'monospace',\n sansSerif: 'sans-serif',\n serif: 'serif',\n monospaceSansSerif: '\"Andale Mono\", \"Lucida Console\", monospace',\n monospaceSerif: '\"Courier New\", monospace',\n proportionalSansSerif: 'sans-serif',\n proportionalSerif: 'serif',\n casual: '\"Comic Sans MS\", Impact, fantasy',\n script: '\"Monotype Corsiva\", cursive',\n smallcaps: '\"Andale Mono\", \"Lucida Console\", monospace, sans-serif'\n};\n/**\n * Construct an rgba color from a given hex color code.\n *\n * @param {number} color\n * Hex number for color, like #f0e or #f604e2.\n *\n * @param {number} opacity\n * Value for opacity, 0.0 - 1.0.\n *\n * @return {string}\n * The rgba color that was created, like 'rgba(255, 0, 0, 0.3)'.\n */\n\nfunction constructColor(color, opacity) {\n var hex;\n\n if (color.length === 4) {\n // color looks like \"#f0e\"\n hex = color[1] + color[1] + color[2] + color[2] + color[3] + color[3];\n } else if (color.length === 7) {\n // color looks like \"#f604e2\"\n hex = color.slice(1);\n } else {\n throw new Error('Invalid color code provided, ' + color + '; must be formatted as e.g. #f0e or #f604e2.');\n }\n\n return 'rgba(' + parseInt(hex.slice(0, 2), 16) + ',' + parseInt(hex.slice(2, 4), 16) + ',' + parseInt(hex.slice(4, 6), 16) + ',' + opacity + ')';\n}\n/**\n * Try to update the style of a DOM element. Some style changes will throw an error,\n * particularly in IE8. Those should be noops.\n *\n * @param {Element} el\n * The DOM element to be styled.\n *\n * @param {string} style\n * The CSS property on the element that should be styled.\n *\n * @param {string} rule\n * The style rule that should be applied to the property.\n *\n * @private\n */\n\nfunction tryUpdateStyle(el, style, rule) {\n try {\n el.style[style] = rule;\n } catch (e) {\n // Satisfies linter.\n return;\n }\n}\n/**\n * The component for displaying text track cues.\n *\n * @extends Component\n */\n\n\nvar TextTrackDisplay = /*#__PURE__*/function (_Component) {\n _inheritsLoose(TextTrackDisplay, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} [ready]\n * The function to call when `TextTrackDisplay` is ready.\n */\n function TextTrackDisplay(player, options, ready) {\n var _this;\n\n _this = _Component.call(this, player, options, ready) || this;\n\n var updateDisplayHandler = function updateDisplayHandler(e) {\n return _this.updateDisplay(e);\n };\n\n player.on('loadstart', function (e) {\n return _this.toggleDisplay(e);\n });\n player.on('texttrackchange', updateDisplayHandler);\n player.on('loadedmetadata', function (e) {\n return _this.preselectTrack(e);\n }); // This used to be called during player init, but was causing an error\n // if a track should show by default and the display hadn't loaded yet.\n // Should probably be moved to an external track loader when we support\n // tracks that don't need a display.\n\n player.ready(bind(_assertThisInitialized(_this), function () {\n if (player.tech_ && player.tech_.featuresNativeTextTracks) {\n this.hide();\n return;\n }\n\n player.on('fullscreenchange', updateDisplayHandler);\n player.on('playerresize', updateDisplayHandler);\n window$1.addEventListener('orientationchange', updateDisplayHandler);\n player.on('dispose', function () {\n return window$1.removeEventListener('orientationchange', updateDisplayHandler);\n });\n var tracks = this.options_.playerOptions.tracks || [];\n\n for (var i = 0; i < tracks.length; i++) {\n this.player_.addRemoteTextTrack(tracks[i], true);\n }\n\n this.preselectTrack();\n }));\n return _this;\n }\n /**\n * Preselect a track following this precedence:\n * - matches the previously selected {@link TextTrack}'s language and kind\n * - matches the previously selected {@link TextTrack}'s language only\n * - is the first default captions track\n * - is the first default descriptions track\n *\n * @listens Player#loadstart\n */\n\n\n var _proto = TextTrackDisplay.prototype;\n\n _proto.preselectTrack = function preselectTrack() {\n var modes = {\n captions: 1,\n subtitles: 1\n };\n var trackList = this.player_.textTracks();\n var userPref = this.player_.cache_.selectedLanguage;\n var firstDesc;\n var firstCaptions;\n var preferredTrack;\n\n for (var i = 0; i < trackList.length; i++) {\n var track = trackList[i];\n\n if (userPref && userPref.enabled && userPref.language && userPref.language === track.language && track.kind in modes) {\n // Always choose the track that matches both language and kind\n if (track.kind === userPref.kind) {\n preferredTrack = track; // or choose the first track that matches language\n } else if (!preferredTrack) {\n preferredTrack = track;\n } // clear everything if offTextTrackMenuItem was clicked\n\n } else if (userPref && !userPref.enabled) {\n preferredTrack = null;\n firstDesc = null;\n firstCaptions = null;\n } else if (track[\"default\"]) {\n if (track.kind === 'descriptions' && !firstDesc) {\n firstDesc = track;\n } else if (track.kind in modes && !firstCaptions) {\n firstCaptions = track;\n }\n }\n } // The preferredTrack matches the user preference and takes\n // precedence over all the other tracks.\n // So, display the preferredTrack before the first default track\n // and the subtitles/captions track before the descriptions track\n\n\n if (preferredTrack) {\n preferredTrack.mode = 'showing';\n } else if (firstCaptions) {\n firstCaptions.mode = 'showing';\n } else if (firstDesc) {\n firstDesc.mode = 'showing';\n }\n }\n /**\n * Turn display of {@link TextTrack}'s from the current state into the other state.\n * There are only two states:\n * - 'shown'\n * - 'hidden'\n *\n * @listens Player#loadstart\n */\n ;\n\n _proto.toggleDisplay = function toggleDisplay() {\n if (this.player_.tech_ && this.player_.tech_.featuresNativeTextTracks) {\n this.hide();\n } else {\n this.show();\n }\n }\n /**\n * Create the {@link Component}'s DOM element.\n *\n * @return {Element}\n * The element that was created.\n */\n ;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-text-track-display'\n }, {\n 'translate': 'yes',\n 'aria-live': 'off',\n 'aria-atomic': 'true'\n });\n }\n /**\n * Clear all displayed {@link TextTrack}s.\n */\n ;\n\n _proto.clearDisplay = function clearDisplay() {\n if (typeof window$1.WebVTT === 'function') {\n window$1.WebVTT.processCues(window$1, [], this.el_);\n }\n }\n /**\n * Update the displayed TextTrack when a either a {@link Player#texttrackchange} or\n * a {@link Player#fullscreenchange} is fired.\n *\n * @listens Player#texttrackchange\n * @listens Player#fullscreenchange\n */\n ;\n\n _proto.updateDisplay = function updateDisplay() {\n var tracks = this.player_.textTracks();\n var allowMultipleShowingTracks = this.options_.allowMultipleShowingTracks;\n this.clearDisplay();\n\n if (allowMultipleShowingTracks) {\n var showingTracks = [];\n\n for (var _i = 0; _i < tracks.length; ++_i) {\n var track = tracks[_i];\n\n if (track.mode !== 'showing') {\n continue;\n }\n\n showingTracks.push(track);\n }\n\n this.updateForTrack(showingTracks);\n return;\n } // Track display prioritization model: if multiple tracks are 'showing',\n // display the first 'subtitles' or 'captions' track which is 'showing',\n // otherwise display the first 'descriptions' track which is 'showing'\n\n\n var descriptionsTrack = null;\n var captionsSubtitlesTrack = null;\n var i = tracks.length;\n\n while (i--) {\n var _track = tracks[i];\n\n if (_track.mode === 'showing') {\n if (_track.kind === 'descriptions') {\n descriptionsTrack = _track;\n } else {\n captionsSubtitlesTrack = _track;\n }\n }\n }\n\n if (captionsSubtitlesTrack) {\n if (this.getAttribute('aria-live') !== 'off') {\n this.setAttribute('aria-live', 'off');\n }\n\n this.updateForTrack(captionsSubtitlesTrack);\n } else if (descriptionsTrack) {\n if (this.getAttribute('aria-live') !== 'assertive') {\n this.setAttribute('aria-live', 'assertive');\n }\n\n this.updateForTrack(descriptionsTrack);\n }\n }\n /**\n * Style {@Link TextTrack} activeCues according to {@Link TextTrackSettings}.\n *\n * @param {TextTrack} track\n * Text track object containing active cues to style.\n */\n ;\n\n _proto.updateDisplayState = function updateDisplayState(track) {\n var overrides = this.player_.textTrackSettings.getValues();\n var cues = track.activeCues;\n var i = cues.length;\n\n while (i--) {\n var cue = cues[i];\n\n if (!cue) {\n continue;\n }\n\n var cueDiv = cue.displayState;\n\n if (overrides.color) {\n cueDiv.firstChild.style.color = overrides.color;\n }\n\n if (overrides.textOpacity) {\n tryUpdateStyle(cueDiv.firstChild, 'color', constructColor(overrides.color || '#fff', overrides.textOpacity));\n }\n\n if (overrides.backgroundColor) {\n cueDiv.firstChild.style.backgroundColor = overrides.backgroundColor;\n }\n\n if (overrides.backgroundOpacity) {\n tryUpdateStyle(cueDiv.firstChild, 'backgroundColor', constructColor(overrides.backgroundColor || '#000', overrides.backgroundOpacity));\n }\n\n if (overrides.windowColor) {\n if (overrides.windowOpacity) {\n tryUpdateStyle(cueDiv, 'backgroundColor', constructColor(overrides.windowColor, overrides.windowOpacity));\n } else {\n cueDiv.style.backgroundColor = overrides.windowColor;\n }\n }\n\n if (overrides.edgeStyle) {\n if (overrides.edgeStyle === 'dropshadow') {\n cueDiv.firstChild.style.textShadow = \"2px 2px 3px \" + darkGray + \", 2px 2px 4px \" + darkGray + \", 2px 2px 5px \" + darkGray;\n } else if (overrides.edgeStyle === 'raised') {\n cueDiv.firstChild.style.textShadow = \"1px 1px \" + darkGray + \", 2px 2px \" + darkGray + \", 3px 3px \" + darkGray;\n } else if (overrides.edgeStyle === 'depressed') {\n cueDiv.firstChild.style.textShadow = \"1px 1px \" + lightGray + \", 0 1px \" + lightGray + \", -1px -1px \" + darkGray + \", 0 -1px \" + darkGray;\n } else if (overrides.edgeStyle === 'uniform') {\n cueDiv.firstChild.style.textShadow = \"0 0 4px \" + darkGray + \", 0 0 4px \" + darkGray + \", 0 0 4px \" + darkGray + \", 0 0 4px \" + darkGray;\n }\n }\n\n if (overrides.fontPercent && overrides.fontPercent !== 1) {\n var fontSize = window$1.parseFloat(cueDiv.style.fontSize);\n cueDiv.style.fontSize = fontSize * overrides.fontPercent + 'px';\n cueDiv.style.height = 'auto';\n cueDiv.style.top = 'auto';\n }\n\n if (overrides.fontFamily && overrides.fontFamily !== 'default') {\n if (overrides.fontFamily === 'small-caps') {\n cueDiv.firstChild.style.fontVariant = 'small-caps';\n } else {\n cueDiv.firstChild.style.fontFamily = fontMap[overrides.fontFamily];\n }\n }\n }\n }\n /**\n * Add an {@link TextTrack} to to the {@link Tech}s {@link TextTrackList}.\n *\n * @param {TextTrack|TextTrack[]} tracks\n * Text track object or text track array to be added to the list.\n */\n ;\n\n _proto.updateForTrack = function updateForTrack(tracks) {\n if (!Array.isArray(tracks)) {\n tracks = [tracks];\n }\n\n if (typeof window$1.WebVTT !== 'function' || tracks.every(function (track) {\n return !track.activeCues;\n })) {\n return;\n }\n\n var cues = []; // push all active track cues\n\n for (var i = 0; i < tracks.length; ++i) {\n var track = tracks[i];\n\n for (var j = 0; j < track.activeCues.length; ++j) {\n cues.push(track.activeCues[j]);\n }\n } // removes all cues before it processes new ones\n\n\n window$1.WebVTT.processCues(window$1, cues, this.el_); // add unique class to each language text track & add settings styling if necessary\n\n for (var _i2 = 0; _i2 < tracks.length; ++_i2) {\n var _track2 = tracks[_i2];\n\n for (var _j = 0; _j < _track2.activeCues.length; ++_j) {\n var cueEl = _track2.activeCues[_j].displayState;\n addClass(cueEl, 'vjs-text-track-cue');\n addClass(cueEl, 'vjs-text-track-cue-' + (_track2.language ? _track2.language : _i2));\n\n if (_track2.language) {\n setAttribute(cueEl, 'lang', _track2.language);\n }\n }\n\n if (this.player_.textTrackSettings) {\n this.updateDisplayState(_track2);\n }\n }\n };\n\n return TextTrackDisplay;\n}(Component$1);\n\nComponent$1.registerComponent('TextTrackDisplay', TextTrackDisplay);\n\n/**\n * A loading spinner for use during waiting/loading events.\n *\n * @extends Component\n */\n\nvar LoadingSpinner = /*#__PURE__*/function (_Component) {\n _inheritsLoose(LoadingSpinner, _Component);\n\n function LoadingSpinner() {\n return _Component.apply(this, arguments) || this;\n }\n\n var _proto = LoadingSpinner.prototype;\n\n /**\n * Create the `LoadingSpinner`s DOM element.\n *\n * @return {Element}\n * The dom element that gets created.\n */\n _proto.createEl = function createEl$1() {\n var isAudio = this.player_.isAudio();\n var playerType = this.localize(isAudio ? 'Audio Player' : 'Video Player');\n var controlText = createEl('span', {\n className: 'vjs-control-text',\n textContent: this.localize('{1} is loading.', [playerType])\n });\n\n var el = _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-loading-spinner',\n dir: 'ltr'\n });\n\n el.appendChild(controlText);\n return el;\n };\n\n return LoadingSpinner;\n}(Component$1);\n\nComponent$1.registerComponent('LoadingSpinner', LoadingSpinner);\n\n/**\n * Base class for all buttons.\n *\n * @extends ClickableComponent\n */\n\nvar Button = /*#__PURE__*/function (_ClickableComponent) {\n _inheritsLoose(Button, _ClickableComponent);\n\n function Button() {\n return _ClickableComponent.apply(this, arguments) || this;\n }\n\n var _proto = Button.prototype;\n\n /**\n * Create the `Button`s DOM element.\n *\n * @param {string} [tag=\"button\"]\n * The element's node type. This argument is IGNORED: no matter what\n * is passed, it will always create a `button` element.\n *\n * @param {Object} [props={}]\n * An object of properties that should be set on the element.\n *\n * @param {Object} [attributes={}]\n * An object of attributes that should be set on the element.\n *\n * @return {Element}\n * The element that gets created.\n */\n _proto.createEl = function createEl$1(tag, props, attributes) {\n if (props === void 0) {\n props = {};\n }\n\n if (attributes === void 0) {\n attributes = {};\n }\n\n tag = 'button';\n props = assign({\n className: this.buildCSSClass()\n }, props); // Add attributes for button element\n\n attributes = assign({\n // Necessary since the default button type is \"submit\"\n type: 'button'\n }, attributes);\n\n var el = createEl(tag, props, attributes);\n\n el.appendChild(createEl('span', {\n className: 'vjs-icon-placeholder'\n }, {\n 'aria-hidden': true\n }));\n this.createControlTextEl(el);\n return el;\n }\n /**\n * Add a child `Component` inside of this `Button`.\n *\n * @param {string|Component} child\n * The name or instance of a child to add.\n *\n * @param {Object} [options={}]\n * The key/value store of options that will get passed to children of\n * the child.\n *\n * @return {Component}\n * The `Component` that gets added as a child. When using a string the\n * `Component` will get created by this process.\n *\n * @deprecated since version 5\n */\n ;\n\n _proto.addChild = function addChild(child, options) {\n if (options === void 0) {\n options = {};\n }\n\n var className = this.constructor.name;\n log$1.warn(\"Adding an actionable (user controllable) child to a Button (\" + className + \") is not supported; use a ClickableComponent instead.\"); // Avoid the error message generated by ClickableComponent's addChild method\n\n return Component$1.prototype.addChild.call(this, child, options);\n }\n /**\n * Enable the `Button` element so that it can be activated or clicked. Use this with\n * {@link Button#disable}.\n */\n ;\n\n _proto.enable = function enable() {\n _ClickableComponent.prototype.enable.call(this);\n\n this.el_.removeAttribute('disabled');\n }\n /**\n * Disable the `Button` element so that it cannot be activated or clicked. Use this with\n * {@link Button#enable}.\n */\n ;\n\n _proto.disable = function disable() {\n _ClickableComponent.prototype.disable.call(this);\n\n this.el_.setAttribute('disabled', 'disabled');\n }\n /**\n * This gets called when a `Button` has focus and `keydown` is triggered via a key\n * press.\n *\n * @param {EventTarget~Event} event\n * The event that caused this function to get called.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n // Ignore Space or Enter key operation, which is handled by the browser for\n // a button - though not for its super class, ClickableComponent. Also,\n // prevent the event from propagating through the DOM and triggering Player\n // hotkeys. We do not preventDefault here because we _want_ the browser to\n // handle it.\n if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n event.stopPropagation();\n return;\n } // Pass keypress handling up for unsupported keys\n\n\n _ClickableComponent.prototype.handleKeyDown.call(this, event);\n };\n\n return Button;\n}(ClickableComponent);\n\nComponent$1.registerComponent('Button', Button);\n\n/**\n * The initial play button that shows before the video has played. The hiding of the\n * `BigPlayButton` get done via CSS and `Player` states.\n *\n * @extends Button\n */\n\nvar BigPlayButton = /*#__PURE__*/function (_Button) {\n _inheritsLoose(BigPlayButton, _Button);\n\n function BigPlayButton(player, options) {\n var _this;\n\n _this = _Button.call(this, player, options) || this;\n _this.mouseused_ = false;\n\n _this.on('mousedown', function (e) {\n return _this.handleMouseDown(e);\n });\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object. Always returns 'vjs-big-play-button'.\n */\n\n\n var _proto = BigPlayButton.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return 'vjs-big-play-button';\n }\n /**\n * This gets called when a `BigPlayButton` \"clicked\". See {@link ClickableComponent}\n * for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} event\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n var playPromise = this.player_.play(); // exit early if clicked via the mouse\n\n if (this.mouseused_ && event.clientX && event.clientY) {\n var sourceIsEncrypted = this.player_.usingPlugin('eme') && this.player_.eme.sessions && this.player_.eme.sessions.length > 0;\n silencePromise(playPromise);\n\n if (this.player_.tech(true) && // We've observed a bug in IE and Edge when playing back DRM content where\n // calling .focus() on the video element causes the video to go black,\n // so we avoid it in that specific case\n !((IE_VERSION || IS_EDGE) && sourceIsEncrypted)) {\n this.player_.tech(true).focus();\n }\n\n return;\n }\n\n var cb = this.player_.getChild('controlBar');\n var playToggle = cb && cb.getChild('playToggle');\n\n if (!playToggle) {\n this.player_.tech(true).focus();\n return;\n }\n\n var playFocus = function playFocus() {\n return playToggle.focus();\n };\n\n if (isPromise(playPromise)) {\n playPromise.then(playFocus, function () {});\n } else {\n this.setTimeout(playFocus, 1);\n }\n };\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n this.mouseused_ = false;\n\n _Button.prototype.handleKeyDown.call(this, event);\n };\n\n _proto.handleMouseDown = function handleMouseDown(event) {\n this.mouseused_ = true;\n };\n\n return BigPlayButton;\n}(Button);\n/**\n * The text that should display over the `BigPlayButton`s controls. Added to for localization.\n *\n * @type {string}\n * @private\n */\n\n\nBigPlayButton.prototype.controlText_ = 'Play Video';\nComponent$1.registerComponent('BigPlayButton', BigPlayButton);\n\n/**\n * The `CloseButton` is a `{@link Button}` that fires a `close` event when\n * it gets clicked.\n *\n * @extends Button\n */\n\nvar CloseButton = /*#__PURE__*/function (_Button) {\n _inheritsLoose(CloseButton, _Button);\n\n /**\n * Creates an instance of the this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function CloseButton(player, options) {\n var _this;\n\n _this = _Button.call(this, player, options) || this;\n\n _this.controlText(options && options.controlText || _this.localize('Close'));\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = CloseButton.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-close-button \" + _Button.prototype.buildCSSClass.call(this);\n }\n /**\n * This gets called when a `CloseButton` gets clicked. See\n * {@link ClickableComponent#handleClick} for more information on when\n * this will be triggered\n *\n * @param {EventTarget~Event} event\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n * @fires CloseButton#close\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n /**\n * Triggered when the a `CloseButton` is clicked.\n *\n * @event CloseButton#close\n * @type {EventTarget~Event}\n *\n * @property {boolean} [bubbles=false]\n * set to false so that the close event does not\n * bubble up to parents if there is no listener\n */\n this.trigger({\n type: 'close',\n bubbles: false\n });\n }\n /**\n * Event handler that is called when a `CloseButton` receives a\n * `keydown` event.\n *\n * By default, if the key is Esc, it will trigger a `click` event.\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n // Esc button will trigger `click` event\n if (keycode.isEventKey(event, 'Esc')) {\n event.preventDefault();\n event.stopPropagation();\n this.trigger('click');\n } else {\n // Pass keypress handling up for unsupported keys\n _Button.prototype.handleKeyDown.call(this, event);\n }\n };\n\n return CloseButton;\n}(Button);\n\nComponent$1.registerComponent('CloseButton', CloseButton);\n\n/**\n * Button to toggle between play and pause.\n *\n * @extends Button\n */\n\nvar PlayToggle = /*#__PURE__*/function (_Button) {\n _inheritsLoose(PlayToggle, _Button);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options={}]\n * The key/value store of player options.\n */\n function PlayToggle(player, options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _Button.call(this, player, options) || this; // show or hide replay icon\n\n options.replay = options.replay === undefined || options.replay;\n\n _this.on(player, 'play', function (e) {\n return _this.handlePlay(e);\n });\n\n _this.on(player, 'pause', function (e) {\n return _this.handlePause(e);\n });\n\n if (options.replay) {\n _this.on(player, 'ended', function (e) {\n return _this.handleEnded(e);\n });\n }\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = PlayToggle.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-play-control \" + _Button.prototype.buildCSSClass.call(this);\n }\n /**\n * This gets called when an `PlayToggle` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n if (this.player_.paused()) {\n silencePromise(this.player_.play());\n } else {\n this.player_.pause();\n }\n }\n /**\n * This gets called once after the video has ended and the user seeks so that\n * we can change the replay button back to a play button.\n *\n * @param {EventTarget~Event} [event]\n * The event that caused this function to run.\n *\n * @listens Player#seeked\n */\n ;\n\n _proto.handleSeeked = function handleSeeked(event) {\n this.removeClass('vjs-ended');\n\n if (this.player_.paused()) {\n this.handlePause(event);\n } else {\n this.handlePlay(event);\n }\n }\n /**\n * Add the vjs-playing class to the element so it can change appearance.\n *\n * @param {EventTarget~Event} [event]\n * The event that caused this function to run.\n *\n * @listens Player#play\n */\n ;\n\n _proto.handlePlay = function handlePlay(event) {\n this.removeClass('vjs-ended');\n this.removeClass('vjs-paused');\n this.addClass('vjs-playing'); // change the button text to \"Pause\"\n\n this.controlText('Pause');\n }\n /**\n * Add the vjs-paused class to the element so it can change appearance.\n *\n * @param {EventTarget~Event} [event]\n * The event that caused this function to run.\n *\n * @listens Player#pause\n */\n ;\n\n _proto.handlePause = function handlePause(event) {\n this.removeClass('vjs-playing');\n this.addClass('vjs-paused'); // change the button text to \"Play\"\n\n this.controlText('Play');\n }\n /**\n * Add the vjs-ended class to the element so it can change appearance\n *\n * @param {EventTarget~Event} [event]\n * The event that caused this function to run.\n *\n * @listens Player#ended\n */\n ;\n\n _proto.handleEnded = function handleEnded(event) {\n var _this2 = this;\n\n this.removeClass('vjs-playing');\n this.addClass('vjs-ended'); // change the button text to \"Replay\"\n\n this.controlText('Replay'); // on the next seek remove the replay button\n\n this.one(this.player_, 'seeked', function (e) {\n return _this2.handleSeeked(e);\n });\n };\n\n return PlayToggle;\n}(Button);\n/**\n * The text that should display over the `PlayToggle`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\n\nPlayToggle.prototype.controlText_ = 'Play';\nComponent$1.registerComponent('PlayToggle', PlayToggle);\n\n/**\n * @file format-time.js\n * @module format-time\n */\n\n/**\n * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in\n * seconds) will force a number of leading zeros to cover the length of the\n * guide.\n *\n * @private\n * @param {number} seconds\n * Number of seconds to be turned into a string\n *\n * @param {number} guide\n * Number (in seconds) to model the string after\n *\n * @return {string}\n * Time formatted as H:MM:SS or M:SS\n */\nvar defaultImplementation = function defaultImplementation(seconds, guide) {\n seconds = seconds < 0 ? 0 : seconds;\n var s = Math.floor(seconds % 60);\n var m = Math.floor(seconds / 60 % 60);\n var h = Math.floor(seconds / 3600);\n var gm = Math.floor(guide / 60 % 60);\n var gh = Math.floor(guide / 3600); // handle invalid times\n\n if (isNaN(seconds) || seconds === Infinity) {\n // '-' is false for all relational operators (e.g. <, >=) so this setting\n // will add the minimum number of fields specified by the guide\n h = m = s = '-';\n } // Check if we need to show hours\n\n\n h = h > 0 || gh > 0 ? h + ':' : ''; // If hours are showing, we may need to add a leading zero.\n // Always show at least one digit of minutes.\n\n m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':'; // Check if leading zero is need for seconds\n\n s = s < 10 ? '0' + s : s;\n return h + m + s;\n}; // Internal pointer to the current implementation.\n\n\nvar implementation = defaultImplementation;\n/**\n * Replaces the default formatTime implementation with a custom implementation.\n *\n * @param {Function} customImplementation\n * A function which will be used in place of the default formatTime\n * implementation. Will receive the current time in seconds and the\n * guide (in seconds) as arguments.\n */\n\nfunction setFormatTime(customImplementation) {\n implementation = customImplementation;\n}\n/**\n * Resets formatTime to the default implementation.\n */\n\nfunction resetFormatTime() {\n implementation = defaultImplementation;\n}\n/**\n * Delegates to either the default time formatting function or a custom\n * function supplied via `setFormatTime`.\n *\n * Formats seconds as a time string (H:MM:SS or M:SS). Supplying a\n * guide (in seconds) will force a number of leading zeros to cover the\n * length of the guide.\n *\n * @static\n * @example formatTime(125, 600) === \"02:05\"\n * @param {number} seconds\n * Number of seconds to be turned into a string\n *\n * @param {number} guide\n * Number (in seconds) to model the string after\n *\n * @return {string}\n * Time formatted as H:MM:SS or M:SS\n */\n\nfunction formatTime(seconds, guide) {\n if (guide === void 0) {\n guide = seconds;\n }\n\n return implementation(seconds, guide);\n}\n\n/**\n * Displays time information about the video\n *\n * @extends Component\n */\n\nvar TimeDisplay = /*#__PURE__*/function (_Component) {\n _inheritsLoose(TimeDisplay, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function TimeDisplay(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n\n _this.on(player, ['timeupdate', 'ended'], function (e) {\n return _this.updateContent(e);\n });\n\n _this.updateTextNode_();\n\n return _this;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = TimeDisplay.prototype;\n\n _proto.createEl = function createEl$1() {\n var className = this.buildCSSClass();\n\n var el = _Component.prototype.createEl.call(this, 'div', {\n className: className + \" vjs-time-control vjs-control\"\n });\n\n var span = createEl('span', {\n className: 'vjs-control-text',\n textContent: this.localize(this.labelText_) + \"\\xA0\"\n }, {\n role: 'presentation'\n });\n el.appendChild(span);\n this.contentEl_ = createEl('span', {\n className: className + \"-display\"\n }, {\n // tell screen readers not to automatically read the time as it changes\n 'aria-live': 'off',\n // span elements have no implicit role, but some screen readers (notably VoiceOver)\n // treat them as a break between items in the DOM when using arrow keys\n // (or left-to-right swipes on iOS) to read contents of a page. Using\n // role='presentation' causes VoiceOver to NOT treat this span as a break.\n 'role': 'presentation'\n });\n el.appendChild(this.contentEl_);\n return el;\n };\n\n _proto.dispose = function dispose() {\n this.contentEl_ = null;\n this.textNode_ = null;\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Updates the time display text node with a new time\n *\n * @param {number} [time=0] the time to update to\n *\n * @private\n */\n ;\n\n _proto.updateTextNode_ = function updateTextNode_(time) {\n var _this2 = this;\n\n if (time === void 0) {\n time = 0;\n }\n\n time = formatTime(time);\n\n if (this.formattedTime_ === time) {\n return;\n }\n\n this.formattedTime_ = time;\n this.requestNamedAnimationFrame('TimeDisplay#updateTextNode_', function () {\n if (!_this2.contentEl_) {\n return;\n }\n\n var oldNode = _this2.textNode_;\n\n if (oldNode && _this2.contentEl_.firstChild !== oldNode) {\n oldNode = null;\n log$1.warn('TimeDisplay#updateTextnode_: Prevented replacement of text node element since it was no longer a child of this node. Appending a new node instead.');\n }\n\n _this2.textNode_ = document.createTextNode(_this2.formattedTime_);\n\n if (!_this2.textNode_) {\n return;\n }\n\n if (oldNode) {\n _this2.contentEl_.replaceChild(_this2.textNode_, oldNode);\n } else {\n _this2.contentEl_.appendChild(_this2.textNode_);\n }\n });\n }\n /**\n * To be filled out in the child class, should update the displayed time\n * in accordance with the fact that the current time has changed.\n *\n * @param {EventTarget~Event} [event]\n * The `timeupdate` event that caused this to run.\n *\n * @listens Player#timeupdate\n */\n ;\n\n _proto.updateContent = function updateContent(event) {};\n\n return TimeDisplay;\n}(Component$1);\n/**\n * The text that is added to the `TimeDisplay` for screen reader users.\n *\n * @type {string}\n * @private\n */\n\n\nTimeDisplay.prototype.labelText_ = 'Time';\n/**\n * The text that should display over the `TimeDisplay`s controls. Added to for localization.\n *\n * @type {string}\n * @private\n *\n * @deprecated in v7; controlText_ is not used in non-active display Components\n */\n\nTimeDisplay.prototype.controlText_ = 'Time';\nComponent$1.registerComponent('TimeDisplay', TimeDisplay);\n\n/**\n * Displays the current time\n *\n * @extends Component\n */\n\nvar CurrentTimeDisplay = /*#__PURE__*/function (_TimeDisplay) {\n _inheritsLoose(CurrentTimeDisplay, _TimeDisplay);\n\n function CurrentTimeDisplay() {\n return _TimeDisplay.apply(this, arguments) || this;\n }\n\n var _proto = CurrentTimeDisplay.prototype;\n\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n _proto.buildCSSClass = function buildCSSClass() {\n return 'vjs-current-time';\n }\n /**\n * Update current time display\n *\n * @param {EventTarget~Event} [event]\n * The `timeupdate` event that caused this function to run.\n *\n * @listens Player#timeupdate\n */\n ;\n\n _proto.updateContent = function updateContent(event) {\n // Allows for smooth scrubbing, when player can't keep up.\n var time;\n\n if (this.player_.ended()) {\n time = this.player_.duration();\n } else {\n time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n }\n\n this.updateTextNode_(time);\n };\n\n return CurrentTimeDisplay;\n}(TimeDisplay);\n/**\n * The text that is added to the `CurrentTimeDisplay` for screen reader users.\n *\n * @type {string}\n * @private\n */\n\n\nCurrentTimeDisplay.prototype.labelText_ = 'Current Time';\n/**\n * The text that should display over the `CurrentTimeDisplay`s controls. Added to for localization.\n *\n * @type {string}\n * @private\n *\n * @deprecated in v7; controlText_ is not used in non-active display Components\n */\n\nCurrentTimeDisplay.prototype.controlText_ = 'Current Time';\nComponent$1.registerComponent('CurrentTimeDisplay', CurrentTimeDisplay);\n\n/**\n * Displays the duration\n *\n * @extends Component\n */\n\nvar DurationDisplay = /*#__PURE__*/function (_TimeDisplay) {\n _inheritsLoose(DurationDisplay, _TimeDisplay);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function DurationDisplay(player, options) {\n var _this;\n\n _this = _TimeDisplay.call(this, player, options) || this;\n\n var updateContent = function updateContent(e) {\n return _this.updateContent(e);\n }; // we do not want to/need to throttle duration changes,\n // as they should always display the changed duration as\n // it has changed\n\n\n _this.on(player, 'durationchange', updateContent); // Listen to loadstart because the player duration is reset when a new media element is loaded,\n // but the durationchange on the user agent will not fire.\n // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}\n\n\n _this.on(player, 'loadstart', updateContent); // Also listen for timeupdate (in the parent) and loadedmetadata because removing those\n // listeners could have broken dependent applications/libraries. These\n // can likely be removed for 7.0.\n\n\n _this.on(player, 'loadedmetadata', updateContent);\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = DurationDisplay.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return 'vjs-duration';\n }\n /**\n * Update duration time display.\n *\n * @param {EventTarget~Event} [event]\n * The `durationchange`, `timeupdate`, or `loadedmetadata` event that caused\n * this function to be called.\n *\n * @listens Player#durationchange\n * @listens Player#timeupdate\n * @listens Player#loadedmetadata\n */\n ;\n\n _proto.updateContent = function updateContent(event) {\n var duration = this.player_.duration();\n this.updateTextNode_(duration);\n };\n\n return DurationDisplay;\n}(TimeDisplay);\n/**\n * The text that is added to the `DurationDisplay` for screen reader users.\n *\n * @type {string}\n * @private\n */\n\n\nDurationDisplay.prototype.labelText_ = 'Duration';\n/**\n * The text that should display over the `DurationDisplay`s controls. Added to for localization.\n *\n * @type {string}\n * @private\n *\n * @deprecated in v7; controlText_ is not used in non-active display Components\n */\n\nDurationDisplay.prototype.controlText_ = 'Duration';\nComponent$1.registerComponent('DurationDisplay', DurationDisplay);\n\n/**\n * The separator between the current time and duration.\n * Can be hidden if it's not needed in the design.\n *\n * @extends Component\n */\n\nvar TimeDivider = /*#__PURE__*/function (_Component) {\n _inheritsLoose(TimeDivider, _Component);\n\n function TimeDivider() {\n return _Component.apply(this, arguments) || this;\n }\n\n var _proto = TimeDivider.prototype;\n\n /**\n * Create the component's DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n _proto.createEl = function createEl() {\n var el = _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-time-control vjs-time-divider'\n }, {\n // this element and its contents can be hidden from assistive techs since\n // it is made extraneous by the announcement of the control text\n // for the current time and duration displays\n 'aria-hidden': true\n });\n\n var div = _Component.prototype.createEl.call(this, 'div');\n\n var span = _Component.prototype.createEl.call(this, 'span', {\n textContent: '/'\n });\n\n div.appendChild(span);\n el.appendChild(div);\n return el;\n };\n\n return TimeDivider;\n}(Component$1);\n\nComponent$1.registerComponent('TimeDivider', TimeDivider);\n\n/**\n * Displays the time left in the video\n *\n * @extends Component\n */\n\nvar RemainingTimeDisplay = /*#__PURE__*/function (_TimeDisplay) {\n _inheritsLoose(RemainingTimeDisplay, _TimeDisplay);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function RemainingTimeDisplay(player, options) {\n var _this;\n\n _this = _TimeDisplay.call(this, player, options) || this;\n\n _this.on(player, 'durationchange', function (e) {\n return _this.updateContent(e);\n });\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = RemainingTimeDisplay.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return 'vjs-remaining-time';\n }\n /**\n * Create the `Component`'s DOM element with the \"minus\" characted prepend to the time\n *\n * @return {Element}\n * The element that was created.\n */\n ;\n\n _proto.createEl = function createEl$1() {\n var el = _TimeDisplay.prototype.createEl.call(this);\n\n if (this.options_.displayNegative !== false) {\n el.insertBefore(createEl('span', {}, {\n 'aria-hidden': true\n }, '-'), this.contentEl_);\n }\n\n return el;\n }\n /**\n * Update remaining time display.\n *\n * @param {EventTarget~Event} [event]\n * The `timeupdate` or `durationchange` event that caused this to run.\n *\n * @listens Player#timeupdate\n * @listens Player#durationchange\n */\n ;\n\n _proto.updateContent = function updateContent(event) {\n if (typeof this.player_.duration() !== 'number') {\n return;\n }\n\n var time; // @deprecated We should only use remainingTimeDisplay\n // as of video.js 7\n\n if (this.player_.ended()) {\n time = 0;\n } else if (this.player_.remainingTimeDisplay) {\n time = this.player_.remainingTimeDisplay();\n } else {\n time = this.player_.remainingTime();\n }\n\n this.updateTextNode_(time);\n };\n\n return RemainingTimeDisplay;\n}(TimeDisplay);\n/**\n * The text that is added to the `RemainingTimeDisplay` for screen reader users.\n *\n * @type {string}\n * @private\n */\n\n\nRemainingTimeDisplay.prototype.labelText_ = 'Remaining Time';\n/**\n * The text that should display over the `RemainingTimeDisplay`s controls. Added to for localization.\n *\n * @type {string}\n * @private\n *\n * @deprecated in v7; controlText_ is not used in non-active display Components\n */\n\nRemainingTimeDisplay.prototype.controlText_ = 'Remaining Time';\nComponent$1.registerComponent('RemainingTimeDisplay', RemainingTimeDisplay);\n\n/**\n * Displays the live indicator when duration is Infinity.\n *\n * @extends Component\n */\n\nvar LiveDisplay = /*#__PURE__*/function (_Component) {\n _inheritsLoose(LiveDisplay, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function LiveDisplay(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n\n _this.updateShowing();\n\n _this.on(_this.player(), 'durationchange', function (e) {\n return _this.updateShowing(e);\n });\n\n return _this;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = LiveDisplay.prototype;\n\n _proto.createEl = function createEl$1() {\n var el = _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-live-control vjs-control'\n });\n\n this.contentEl_ = createEl('div', {\n className: 'vjs-live-display'\n }, {\n 'aria-live': 'off'\n });\n this.contentEl_.appendChild(createEl('span', {\n className: 'vjs-control-text',\n textContent: this.localize('Stream Type') + \"\\xA0\"\n }));\n this.contentEl_.appendChild(document.createTextNode(this.localize('LIVE')));\n el.appendChild(this.contentEl_);\n return el;\n };\n\n _proto.dispose = function dispose() {\n this.contentEl_ = null;\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Check the duration to see if the LiveDisplay should be showing or not. Then show/hide\n * it accordingly\n *\n * @param {EventTarget~Event} [event]\n * The {@link Player#durationchange} event that caused this function to run.\n *\n * @listens Player#durationchange\n */\n ;\n\n _proto.updateShowing = function updateShowing(event) {\n if (this.player().duration() === Infinity) {\n this.show();\n } else {\n this.hide();\n }\n };\n\n return LiveDisplay;\n}(Component$1);\n\nComponent$1.registerComponent('LiveDisplay', LiveDisplay);\n\n/**\n * Displays the live indicator when duration is Infinity.\n *\n * @extends Component\n */\n\nvar SeekToLive = /*#__PURE__*/function (_Button) {\n _inheritsLoose(SeekToLive, _Button);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function SeekToLive(player, options) {\n var _this;\n\n _this = _Button.call(this, player, options) || this;\n\n _this.updateLiveEdgeStatus();\n\n if (_this.player_.liveTracker) {\n _this.updateLiveEdgeStatusHandler_ = function (e) {\n return _this.updateLiveEdgeStatus(e);\n };\n\n _this.on(_this.player_.liveTracker, 'liveedgechange', _this.updateLiveEdgeStatusHandler_);\n }\n\n return _this;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = SeekToLive.prototype;\n\n _proto.createEl = function createEl$1() {\n var el = _Button.prototype.createEl.call(this, 'button', {\n className: 'vjs-seek-to-live-control vjs-control'\n });\n\n this.textEl_ = createEl('span', {\n className: 'vjs-seek-to-live-text',\n textContent: this.localize('LIVE')\n }, {\n 'aria-hidden': 'true'\n });\n el.appendChild(this.textEl_);\n return el;\n }\n /**\n * Update the state of this button if we are at the live edge\n * or not\n */\n ;\n\n _proto.updateLiveEdgeStatus = function updateLiveEdgeStatus() {\n // default to live edge\n if (!this.player_.liveTracker || this.player_.liveTracker.atLiveEdge()) {\n this.setAttribute('aria-disabled', true);\n this.addClass('vjs-at-live-edge');\n this.controlText('Seek to live, currently playing live');\n } else {\n this.setAttribute('aria-disabled', false);\n this.removeClass('vjs-at-live-edge');\n this.controlText('Seek to live, currently behind live');\n }\n }\n /**\n * On click bring us as near to the live point as possible.\n * This requires that we wait for the next `live-seekable-change`\n * event which will happen every segment length seconds.\n */\n ;\n\n _proto.handleClick = function handleClick() {\n this.player_.liveTracker.seekToLiveEdge();\n }\n /**\n * Dispose of the element and stop tracking\n */\n ;\n\n _proto.dispose = function dispose() {\n if (this.player_.liveTracker) {\n this.off(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);\n }\n\n this.textEl_ = null;\n\n _Button.prototype.dispose.call(this);\n };\n\n return SeekToLive;\n}(Button);\n\nSeekToLive.prototype.controlText_ = 'Seek to live, currently playing live';\nComponent$1.registerComponent('SeekToLive', SeekToLive);\n\n/**\n * Keep a number between a min and a max value\n *\n * @param {number} number\n * The number to clamp\n *\n * @param {number} min\n * The minimum value\n * @param {number} max\n * The maximum value\n *\n * @return {number}\n * the clamped number\n */\nvar clamp = function clamp(number, min, max) {\n number = Number(number);\n return Math.min(max, Math.max(min, isNaN(number) ? min : number));\n};\n\n/**\n * The base functionality for a slider. Can be vertical or horizontal.\n * For instance the volume bar or the seek bar on a video is a slider.\n *\n * @extends Component\n */\n\nvar Slider = /*#__PURE__*/function (_Component) {\n _inheritsLoose(Slider, _Component);\n\n /**\n * Create an instance of this class\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function Slider(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n\n _this.handleMouseDown_ = function (e) {\n return _this.handleMouseDown(e);\n };\n\n _this.handleMouseUp_ = function (e) {\n return _this.handleMouseUp(e);\n };\n\n _this.handleKeyDown_ = function (e) {\n return _this.handleKeyDown(e);\n };\n\n _this.handleClick_ = function (e) {\n return _this.handleClick(e);\n };\n\n _this.handleMouseMove_ = function (e) {\n return _this.handleMouseMove(e);\n };\n\n _this.update_ = function (e) {\n return _this.update(e);\n }; // Set property names to bar to match with the child Slider class is looking for\n\n\n _this.bar = _this.getChild(_this.options_.barName); // Set a horizontal or vertical class on the slider depending on the slider type\n\n _this.vertical(!!_this.options_.vertical);\n\n _this.enable();\n\n return _this;\n }\n /**\n * Are controls are currently enabled for this slider or not.\n *\n * @return {boolean}\n * true if controls are enabled, false otherwise\n */\n\n\n var _proto = Slider.prototype;\n\n _proto.enabled = function enabled() {\n return this.enabled_;\n }\n /**\n * Enable controls for this slider if they are disabled\n */\n ;\n\n _proto.enable = function enable() {\n if (this.enabled()) {\n return;\n }\n\n this.on('mousedown', this.handleMouseDown_);\n this.on('touchstart', this.handleMouseDown_);\n this.on('keydown', this.handleKeyDown_);\n this.on('click', this.handleClick_); // TODO: deprecated, controlsvisible does not seem to be fired\n\n this.on(this.player_, 'controlsvisible', this.update);\n\n if (this.playerEvent) {\n this.on(this.player_, this.playerEvent, this.update);\n }\n\n this.removeClass('disabled');\n this.setAttribute('tabindex', 0);\n this.enabled_ = true;\n }\n /**\n * Disable controls for this slider if they are enabled\n */\n ;\n\n _proto.disable = function disable() {\n if (!this.enabled()) {\n return;\n }\n\n var doc = this.bar.el_.ownerDocument;\n this.off('mousedown', this.handleMouseDown_);\n this.off('touchstart', this.handleMouseDown_);\n this.off('keydown', this.handleKeyDown_);\n this.off('click', this.handleClick_);\n this.off(this.player_, 'controlsvisible', this.update_);\n this.off(doc, 'mousemove', this.handleMouseMove_);\n this.off(doc, 'mouseup', this.handleMouseUp_);\n this.off(doc, 'touchmove', this.handleMouseMove_);\n this.off(doc, 'touchend', this.handleMouseUp_);\n this.removeAttribute('tabindex');\n this.addClass('disabled');\n\n if (this.playerEvent) {\n this.off(this.player_, this.playerEvent, this.update);\n }\n\n this.enabled_ = false;\n }\n /**\n * Create the `Slider`s DOM element.\n *\n * @param {string} type\n * Type of element to create.\n *\n * @param {Object} [props={}]\n * List of properties in Object form.\n *\n * @param {Object} [attributes={}]\n * list of attributes in Object form.\n *\n * @return {Element}\n * The element that gets created.\n */\n ;\n\n _proto.createEl = function createEl(type, props, attributes) {\n if (props === void 0) {\n props = {};\n }\n\n if (attributes === void 0) {\n attributes = {};\n }\n\n // Add the slider element class to all sub classes\n props.className = props.className + ' vjs-slider';\n props = assign({\n tabIndex: 0\n }, props);\n attributes = assign({\n 'role': 'slider',\n 'aria-valuenow': 0,\n 'aria-valuemin': 0,\n 'aria-valuemax': 100,\n 'tabIndex': 0\n }, attributes);\n return _Component.prototype.createEl.call(this, type, props, attributes);\n }\n /**\n * Handle `mousedown` or `touchstart` events on the `Slider`.\n *\n * @param {EventTarget~Event} event\n * `mousedown` or `touchstart` event that triggered this function\n *\n * @listens mousedown\n * @listens touchstart\n * @fires Slider#slideractive\n */\n ;\n\n _proto.handleMouseDown = function handleMouseDown(event) {\n var doc = this.bar.el_.ownerDocument;\n\n if (event.type === 'mousedown') {\n event.preventDefault();\n } // Do not call preventDefault() on touchstart in Chrome\n // to avoid console warnings. Use a 'touch-action: none' style\n // instead to prevent unintented scrolling.\n // https://developers.google.com/web/updates/2017/01/scrolling-intervention\n\n\n if (event.type === 'touchstart' && !IS_CHROME) {\n event.preventDefault();\n }\n\n blockTextSelection();\n this.addClass('vjs-sliding');\n /**\n * Triggered when the slider is in an active state\n *\n * @event Slider#slideractive\n * @type {EventTarget~Event}\n */\n\n this.trigger('slideractive');\n this.on(doc, 'mousemove', this.handleMouseMove_);\n this.on(doc, 'mouseup', this.handleMouseUp_);\n this.on(doc, 'touchmove', this.handleMouseMove_);\n this.on(doc, 'touchend', this.handleMouseUp_);\n this.handleMouseMove(event, true);\n }\n /**\n * Handle the `mousemove`, `touchmove`, and `mousedown` events on this `Slider`.\n * The `mousemove` and `touchmove` events will only only trigger this function during\n * `mousedown` and `touchstart`. This is due to {@link Slider#handleMouseDown} and\n * {@link Slider#handleMouseUp}.\n *\n * @param {EventTarget~Event} event\n * `mousedown`, `mousemove`, `touchstart`, or `touchmove` event that triggered\n * this function\n * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false.\n *\n * @listens mousemove\n * @listens touchmove\n */\n ;\n\n _proto.handleMouseMove = function handleMouseMove(event) {}\n /**\n * Handle `mouseup` or `touchend` events on the `Slider`.\n *\n * @param {EventTarget~Event} event\n * `mouseup` or `touchend` event that triggered this function.\n *\n * @listens touchend\n * @listens mouseup\n * @fires Slider#sliderinactive\n */\n ;\n\n _proto.handleMouseUp = function handleMouseUp() {\n var doc = this.bar.el_.ownerDocument;\n unblockTextSelection();\n this.removeClass('vjs-sliding');\n /**\n * Triggered when the slider is no longer in an active state.\n *\n * @event Slider#sliderinactive\n * @type {EventTarget~Event}\n */\n\n this.trigger('sliderinactive');\n this.off(doc, 'mousemove', this.handleMouseMove_);\n this.off(doc, 'mouseup', this.handleMouseUp_);\n this.off(doc, 'touchmove', this.handleMouseMove_);\n this.off(doc, 'touchend', this.handleMouseUp_);\n this.update();\n }\n /**\n * Update the progress bar of the `Slider`.\n *\n * @return {number}\n * The percentage of progress the progress bar represents as a\n * number from 0 to 1.\n */\n ;\n\n _proto.update = function update() {\n var _this2 = this;\n\n // In VolumeBar init we have a setTimeout for update that pops and update\n // to the end of the execution stack. The player is destroyed before then\n // update will cause an error\n // If there's no bar...\n if (!this.el_ || !this.bar) {\n return;\n } // clamp progress between 0 and 1\n // and only round to four decimal places, as we round to two below\n\n\n var progress = this.getProgress();\n\n if (progress === this.progress_) {\n return progress;\n }\n\n this.progress_ = progress;\n this.requestNamedAnimationFrame('Slider#update', function () {\n // Set the new bar width or height\n var sizeKey = _this2.vertical() ? 'height' : 'width'; // Convert to a percentage for css value\n\n _this2.bar.el().style[sizeKey] = (progress * 100).toFixed(2) + '%';\n });\n return progress;\n }\n /**\n * Get the percentage of the bar that should be filled\n * but clamped and rounded.\n *\n * @return {number}\n * percentage filled that the slider is\n */\n ;\n\n _proto.getProgress = function getProgress() {\n return Number(clamp(this.getPercent(), 0, 1).toFixed(4));\n }\n /**\n * Calculate distance for slider\n *\n * @param {EventTarget~Event} event\n * The event that caused this function to run.\n *\n * @return {number}\n * The current position of the Slider.\n * - position.x for vertical `Slider`s\n * - position.y for horizontal `Slider`s\n */\n ;\n\n _proto.calculateDistance = function calculateDistance(event) {\n var position = getPointerPosition(this.el_, event);\n\n if (this.vertical()) {\n return position.y;\n }\n\n return position.x;\n }\n /**\n * Handle a `keydown` event on the `Slider`. Watches for left, rigth, up, and down\n * arrow keys. This function will only be called when the slider has focus. See\n * {@link Slider#handleFocus} and {@link Slider#handleBlur}.\n *\n * @param {EventTarget~Event} event\n * the `keydown` event that caused this function to run.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n // Left and Down Arrows\n if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {\n event.preventDefault();\n event.stopPropagation();\n this.stepBack(); // Up and Right Arrows\n } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {\n event.preventDefault();\n event.stopPropagation();\n this.stepForward();\n } else {\n // Pass keydown handling up for unsupported keys\n _Component.prototype.handleKeyDown.call(this, event);\n }\n }\n /**\n * Listener for click events on slider, used to prevent clicks\n * from bubbling up to parent elements like button menus.\n *\n * @param {Object} event\n * Event that caused this object to run\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n event.stopPropagation();\n event.preventDefault();\n }\n /**\n * Get/set if slider is horizontal for vertical\n *\n * @param {boolean} [bool]\n * - true if slider is vertical,\n * - false is horizontal\n *\n * @return {boolean}\n * - true if slider is vertical, and getting\n * - false if the slider is horizontal, and getting\n */\n ;\n\n _proto.vertical = function vertical(bool) {\n if (bool === undefined) {\n return this.vertical_ || false;\n }\n\n this.vertical_ = !!bool;\n\n if (this.vertical_) {\n this.addClass('vjs-slider-vertical');\n } else {\n this.addClass('vjs-slider-horizontal');\n }\n };\n\n return Slider;\n}(Component$1);\n\nComponent$1.registerComponent('Slider', Slider);\n\nvar percentify = function percentify(time, end) {\n return clamp(time / end * 100, 0, 100).toFixed(2) + '%';\n};\n/**\n * Shows loading progress\n *\n * @extends Component\n */\n\n\nvar LoadProgressBar = /*#__PURE__*/function (_Component) {\n _inheritsLoose(LoadProgressBar, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function LoadProgressBar(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n _this.partEls_ = [];\n\n _this.on(player, 'progress', function (e) {\n return _this.update(e);\n });\n\n return _this;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = LoadProgressBar.prototype;\n\n _proto.createEl = function createEl$1() {\n var el = _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-load-progress'\n });\n\n var wrapper = createEl('span', {\n className: 'vjs-control-text'\n });\n var loadedText = createEl('span', {\n textContent: this.localize('Loaded')\n });\n var separator = document.createTextNode(': ');\n this.percentageEl_ = createEl('span', {\n className: 'vjs-control-text-loaded-percentage',\n textContent: '0%'\n });\n el.appendChild(wrapper);\n wrapper.appendChild(loadedText);\n wrapper.appendChild(separator);\n wrapper.appendChild(this.percentageEl_);\n return el;\n };\n\n _proto.dispose = function dispose() {\n this.partEls_ = null;\n this.percentageEl_ = null;\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Update progress bar\n *\n * @param {EventTarget~Event} [event]\n * The `progress` event that caused this function to run.\n *\n * @listens Player#progress\n */\n ;\n\n _proto.update = function update(event) {\n var _this2 = this;\n\n this.requestNamedAnimationFrame('LoadProgressBar#update', function () {\n var liveTracker = _this2.player_.liveTracker;\n\n var buffered = _this2.player_.buffered();\n\n var duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : _this2.player_.duration();\n\n var bufferedEnd = _this2.player_.bufferedEnd();\n\n var children = _this2.partEls_;\n var percent = percentify(bufferedEnd, duration);\n\n if (_this2.percent_ !== percent) {\n // update the width of the progress bar\n _this2.el_.style.width = percent; // update the control-text\n\n textContent(_this2.percentageEl_, percent);\n _this2.percent_ = percent;\n } // add child elements to represent the individual buffered time ranges\n\n\n for (var i = 0; i < buffered.length; i++) {\n var start = buffered.start(i);\n var end = buffered.end(i);\n var part = children[i];\n\n if (!part) {\n part = _this2.el_.appendChild(createEl());\n children[i] = part;\n } // only update if changed\n\n\n if (part.dataset.start === start && part.dataset.end === end) {\n continue;\n }\n\n part.dataset.start = start;\n part.dataset.end = end; // set the percent based on the width of the progress bar (bufferedEnd)\n\n part.style.left = percentify(start, bufferedEnd);\n part.style.width = percentify(end - start, bufferedEnd);\n } // remove unused buffered range elements\n\n\n for (var _i = children.length; _i > buffered.length; _i--) {\n _this2.el_.removeChild(children[_i - 1]);\n }\n\n children.length = buffered.length;\n });\n };\n\n return LoadProgressBar;\n}(Component$1);\n\nComponent$1.registerComponent('LoadProgressBar', LoadProgressBar);\n\n/**\n * Time tooltips display a time above the progress bar.\n *\n * @extends Component\n */\n\nvar TimeTooltip = /*#__PURE__*/function (_Component) {\n _inheritsLoose(TimeTooltip, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The {@link Player} that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function TimeTooltip(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n _this.update = throttle(bind(_assertThisInitialized(_this), _this.update), UPDATE_REFRESH_INTERVAL);\n return _this;\n }\n /**\n * Create the time tooltip DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = TimeTooltip.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-time-tooltip'\n }, {\n 'aria-hidden': 'true'\n });\n }\n /**\n * Updates the position of the time tooltip relative to the `SeekBar`.\n *\n * @param {Object} seekBarRect\n * The `ClientRect` for the {@link SeekBar} element.\n *\n * @param {number} seekBarPoint\n * A number from 0 to 1, representing a horizontal reference point\n * from the left edge of the {@link SeekBar}\n */\n ;\n\n _proto.update = function update(seekBarRect, seekBarPoint, content) {\n var tooltipRect = findPosition(this.el_);\n var playerRect = getBoundingClientRect(this.player_.el());\n var seekBarPointPx = seekBarRect.width * seekBarPoint; // do nothing if either rect isn't available\n // for example, if the player isn't in the DOM for testing\n\n if (!playerRect || !tooltipRect) {\n return;\n } // This is the space left of the `seekBarPoint` available within the bounds\n // of the player. We calculate any gap between the left edge of the player\n // and the left edge of the `SeekBar` and add the number of pixels in the\n // `SeekBar` before hitting the `seekBarPoint`\n\n\n var spaceLeftOfPoint = seekBarRect.left - playerRect.left + seekBarPointPx; // This is the space right of the `seekBarPoint` available within the bounds\n // of the player. We calculate the number of pixels from the `seekBarPoint`\n // to the right edge of the `SeekBar` and add to that any gap between the\n // right edge of the `SeekBar` and the player.\n\n var spaceRightOfPoint = seekBarRect.width - seekBarPointPx + (playerRect.right - seekBarRect.right); // This is the number of pixels by which the tooltip will need to be pulled\n // further to the right to center it over the `seekBarPoint`.\n\n var pullTooltipBy = tooltipRect.width / 2; // Adjust the `pullTooltipBy` distance to the left or right depending on\n // the results of the space calculations above.\n\n if (spaceLeftOfPoint < pullTooltipBy) {\n pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;\n } else if (spaceRightOfPoint < pullTooltipBy) {\n pullTooltipBy = spaceRightOfPoint;\n } // Due to the imprecision of decimal/ratio based calculations and varying\n // rounding behaviors, there are cases where the spacing adjustment is off\n // by a pixel or two. This adds insurance to these calculations.\n\n\n if (pullTooltipBy < 0) {\n pullTooltipBy = 0;\n } else if (pullTooltipBy > tooltipRect.width) {\n pullTooltipBy = tooltipRect.width;\n } // prevent small width fluctuations within 0.4px from\n // changing the value below.\n // This really helps for live to prevent the play\n // progress time tooltip from jittering\n\n\n pullTooltipBy = Math.round(pullTooltipBy);\n this.el_.style.right = \"-\" + pullTooltipBy + \"px\";\n this.write(content);\n }\n /**\n * Write the time to the tooltip DOM element.\n *\n * @param {string} content\n * The formatted time for the tooltip.\n */\n ;\n\n _proto.write = function write(content) {\n textContent(this.el_, content);\n }\n /**\n * Updates the position of the time tooltip relative to the `SeekBar`.\n *\n * @param {Object} seekBarRect\n * The `ClientRect` for the {@link SeekBar} element.\n *\n * @param {number} seekBarPoint\n * A number from 0 to 1, representing a horizontal reference point\n * from the left edge of the {@link SeekBar}\n *\n * @param {number} time\n * The time to update the tooltip to, not used during live playback\n *\n * @param {Function} cb\n * A function that will be called during the request animation frame\n * for tooltips that need to do additional animations from the default\n */\n ;\n\n _proto.updateTime = function updateTime(seekBarRect, seekBarPoint, time, cb) {\n var _this2 = this;\n\n this.requestNamedAnimationFrame('TimeTooltip#updateTime', function () {\n var content;\n\n var duration = _this2.player_.duration();\n\n if (_this2.player_.liveTracker && _this2.player_.liveTracker.isLive()) {\n var liveWindow = _this2.player_.liveTracker.liveWindow();\n\n var secondsBehind = liveWindow - seekBarPoint * liveWindow;\n content = (secondsBehind < 1 ? '' : '-') + formatTime(secondsBehind, liveWindow);\n } else {\n content = formatTime(time, duration);\n }\n\n _this2.update(seekBarRect, seekBarPoint, content);\n\n if (cb) {\n cb();\n }\n });\n };\n\n return TimeTooltip;\n}(Component$1);\n\nComponent$1.registerComponent('TimeTooltip', TimeTooltip);\n\n/**\n * Used by {@link SeekBar} to display media playback progress as part of the\n * {@link ProgressControl}.\n *\n * @extends Component\n */\n\nvar PlayProgressBar = /*#__PURE__*/function (_Component) {\n _inheritsLoose(PlayProgressBar, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The {@link Player} that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function PlayProgressBar(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n _this.update = throttle(bind(_assertThisInitialized(_this), _this.update), UPDATE_REFRESH_INTERVAL);\n return _this;\n }\n /**\n * Create the the DOM element for this class.\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = PlayProgressBar.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-play-progress vjs-slider-bar'\n }, {\n 'aria-hidden': 'true'\n });\n }\n /**\n * Enqueues updates to its own DOM as well as the DOM of its\n * {@link TimeTooltip} child.\n *\n * @param {Object} seekBarRect\n * The `ClientRect` for the {@link SeekBar} element.\n *\n * @param {number} seekBarPoint\n * A number from 0 to 1, representing a horizontal reference point\n * from the left edge of the {@link SeekBar}\n */\n ;\n\n _proto.update = function update(seekBarRect, seekBarPoint) {\n var timeTooltip = this.getChild('timeTooltip');\n\n if (!timeTooltip) {\n return;\n }\n\n var time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n timeTooltip.updateTime(seekBarRect, seekBarPoint, time);\n };\n\n return PlayProgressBar;\n}(Component$1);\n/**\n * Default options for {@link PlayProgressBar}.\n *\n * @type {Object}\n * @private\n */\n\n\nPlayProgressBar.prototype.options_ = {\n children: []\n}; // Time tooltips should not be added to a player on mobile devices\n\nif (!IS_IOS && !IS_ANDROID) {\n PlayProgressBar.prototype.options_.children.push('timeTooltip');\n}\n\nComponent$1.registerComponent('PlayProgressBar', PlayProgressBar);\n\n/**\n * The {@link MouseTimeDisplay} component tracks mouse movement over the\n * {@link ProgressControl}. It displays an indicator and a {@link TimeTooltip}\n * indicating the time which is represented by a given point in the\n * {@link ProgressControl}.\n *\n * @extends Component\n */\n\nvar MouseTimeDisplay = /*#__PURE__*/function (_Component) {\n _inheritsLoose(MouseTimeDisplay, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The {@link Player} that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function MouseTimeDisplay(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n _this.update = throttle(bind(_assertThisInitialized(_this), _this.update), UPDATE_REFRESH_INTERVAL);\n return _this;\n }\n /**\n * Create the DOM element for this class.\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = MouseTimeDisplay.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-mouse-display'\n });\n }\n /**\n * Enqueues updates to its own DOM as well as the DOM of its\n * {@link TimeTooltip} child.\n *\n * @param {Object} seekBarRect\n * The `ClientRect` for the {@link SeekBar} element.\n *\n * @param {number} seekBarPoint\n * A number from 0 to 1, representing a horizontal reference point\n * from the left edge of the {@link SeekBar}\n */\n ;\n\n _proto.update = function update(seekBarRect, seekBarPoint) {\n var _this2 = this;\n\n var time = seekBarPoint * this.player_.duration();\n this.getChild('timeTooltip').updateTime(seekBarRect, seekBarPoint, time, function () {\n _this2.el_.style.left = seekBarRect.width * seekBarPoint + \"px\";\n });\n };\n\n return MouseTimeDisplay;\n}(Component$1);\n/**\n * Default options for `MouseTimeDisplay`\n *\n * @type {Object}\n * @private\n */\n\n\nMouseTimeDisplay.prototype.options_ = {\n children: ['timeTooltip']\n};\nComponent$1.registerComponent('MouseTimeDisplay', MouseTimeDisplay);\n\nvar STEP_SECONDS = 5; // The multiplier of STEP_SECONDS that PgUp/PgDown move the timeline.\n\nvar PAGE_KEY_MULTIPLIER = 12;\n/**\n * Seek bar and container for the progress bars. Uses {@link PlayProgressBar}\n * as its `bar`.\n *\n * @extends Slider\n */\n\nvar SeekBar = /*#__PURE__*/function (_Slider) {\n _inheritsLoose(SeekBar, _Slider);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function SeekBar(player, options) {\n var _this;\n\n _this = _Slider.call(this, player, options) || this;\n\n _this.setEventHandlers_();\n\n return _this;\n }\n /**\n * Sets the event handlers\n *\n * @private\n */\n\n\n var _proto = SeekBar.prototype;\n\n _proto.setEventHandlers_ = function setEventHandlers_() {\n var _this2 = this;\n\n this.update_ = bind(this, this.update);\n this.update = throttle(this.update_, UPDATE_REFRESH_INTERVAL);\n this.on(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);\n\n if (this.player_.liveTracker) {\n this.on(this.player_.liveTracker, 'liveedgechange', this.update);\n } // when playing, let's ensure we smoothly update the play progress bar\n // via an interval\n\n\n this.updateInterval = null;\n\n this.enableIntervalHandler_ = function (e) {\n return _this2.enableInterval_(e);\n };\n\n this.disableIntervalHandler_ = function (e) {\n return _this2.disableInterval_(e);\n };\n\n this.on(this.player_, ['playing'], this.enableIntervalHandler_);\n this.on(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_); // we don't need to update the play progress if the document is hidden,\n // also, this causes the CPU to spike and eventually crash the page on IE11.\n\n if ('hidden' in document && 'visibilityState' in document) {\n this.on(document, 'visibilitychange', this.toggleVisibility_);\n }\n };\n\n _proto.toggleVisibility_ = function toggleVisibility_(e) {\n if (document.visibilityState === 'hidden') {\n this.cancelNamedAnimationFrame('SeekBar#update');\n this.cancelNamedAnimationFrame('Slider#update');\n this.disableInterval_(e);\n } else {\n if (!this.player_.ended() && !this.player_.paused()) {\n this.enableInterval_();\n } // we just switched back to the page and someone may be looking, so, update ASAP\n\n\n this.update();\n }\n };\n\n _proto.enableInterval_ = function enableInterval_() {\n if (this.updateInterval) {\n return;\n }\n\n this.updateInterval = this.setInterval(this.update, UPDATE_REFRESH_INTERVAL);\n };\n\n _proto.disableInterval_ = function disableInterval_(e) {\n if (this.player_.liveTracker && this.player_.liveTracker.isLive() && e && e.type !== 'ended') {\n return;\n }\n\n if (!this.updateInterval) {\n return;\n }\n\n this.clearInterval(this.updateInterval);\n this.updateInterval = null;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n ;\n\n _proto.createEl = function createEl() {\n return _Slider.prototype.createEl.call(this, 'div', {\n className: 'vjs-progress-holder'\n }, {\n 'aria-label': this.localize('Progress Bar')\n });\n }\n /**\n * This function updates the play progress bar and accessibility\n * attributes to whatever is passed in.\n *\n * @param {EventTarget~Event} [event]\n * The `timeupdate` or `ended` event that caused this to run.\n *\n * @listens Player#timeupdate\n *\n * @return {number}\n * The current percent at a number from 0-1\n */\n ;\n\n _proto.update = function update(event) {\n var _this3 = this;\n\n // ignore updates while the tab is hidden\n if (document.visibilityState === 'hidden') {\n return;\n }\n\n var percent = _Slider.prototype.update.call(this);\n\n this.requestNamedAnimationFrame('SeekBar#update', function () {\n var currentTime = _this3.player_.ended() ? _this3.player_.duration() : _this3.getCurrentTime_();\n var liveTracker = _this3.player_.liveTracker;\n\n var duration = _this3.player_.duration();\n\n if (liveTracker && liveTracker.isLive()) {\n duration = _this3.player_.liveTracker.liveCurrentTime();\n }\n\n if (_this3.percent_ !== percent) {\n // machine readable value of progress bar (percentage complete)\n _this3.el_.setAttribute('aria-valuenow', (percent * 100).toFixed(2));\n\n _this3.percent_ = percent;\n }\n\n if (_this3.currentTime_ !== currentTime || _this3.duration_ !== duration) {\n // human readable value of progress bar (time complete)\n _this3.el_.setAttribute('aria-valuetext', _this3.localize('progress bar timing: currentTime={1} duration={2}', [formatTime(currentTime, duration), formatTime(duration, duration)], '{1} of {2}'));\n\n _this3.currentTime_ = currentTime;\n _this3.duration_ = duration;\n } // update the progress bar time tooltip with the current time\n\n\n if (_this3.bar) {\n _this3.bar.update(getBoundingClientRect(_this3.el()), _this3.getProgress());\n }\n });\n return percent;\n }\n /**\n * Prevent liveThreshold from causing seeks to seem like they\n * are not happening from a user perspective.\n *\n * @param {number} ct\n * current time to seek to\n */\n ;\n\n _proto.userSeek_ = function userSeek_(ct) {\n if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {\n this.player_.liveTracker.nextSeekedFromUser();\n }\n\n this.player_.currentTime(ct);\n }\n /**\n * Get the value of current time but allows for smooth scrubbing,\n * when player can't keep up.\n *\n * @return {number}\n * The current time value to display\n *\n * @private\n */\n ;\n\n _proto.getCurrentTime_ = function getCurrentTime_() {\n return this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n }\n /**\n * Get the percentage of media played so far.\n *\n * @return {number}\n * The percentage of media played so far (0 to 1).\n */\n ;\n\n _proto.getPercent = function getPercent() {\n var currentTime = this.getCurrentTime_();\n var percent;\n var liveTracker = this.player_.liveTracker;\n\n if (liveTracker && liveTracker.isLive()) {\n percent = (currentTime - liveTracker.seekableStart()) / liveTracker.liveWindow(); // prevent the percent from changing at the live edge\n\n if (liveTracker.atLiveEdge()) {\n percent = 1;\n }\n } else {\n percent = currentTime / this.player_.duration();\n }\n\n return percent;\n }\n /**\n * Handle mouse down on seek bar\n *\n * @param {EventTarget~Event} event\n * The `mousedown` event that caused this to run.\n *\n * @listens mousedown\n */\n ;\n\n _proto.handleMouseDown = function handleMouseDown(event) {\n if (!isSingleLeftClick(event)) {\n return;\n } // Stop event propagation to prevent double fire in progress-control.js\n\n\n event.stopPropagation();\n this.videoWasPlaying = !this.player_.paused();\n this.player_.pause();\n\n _Slider.prototype.handleMouseDown.call(this, event);\n }\n /**\n * Handle mouse move on seek bar\n *\n * @param {EventTarget~Event} event\n * The `mousemove` event that caused this to run.\n * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false\n *\n * @listens mousemove\n */\n ;\n\n _proto.handleMouseMove = function handleMouseMove(event, mouseDown) {\n if (mouseDown === void 0) {\n mouseDown = false;\n }\n\n if (!isSingleLeftClick(event)) {\n return;\n }\n\n if (!mouseDown && !this.player_.scrubbing()) {\n this.player_.scrubbing(true);\n }\n\n var newTime;\n var distance = this.calculateDistance(event);\n var liveTracker = this.player_.liveTracker;\n\n if (!liveTracker || !liveTracker.isLive()) {\n newTime = distance * this.player_.duration(); // Don't let video end while scrubbing.\n\n if (newTime === this.player_.duration()) {\n newTime = newTime - 0.1;\n }\n } else {\n if (distance >= 0.99) {\n liveTracker.seekToLiveEdge();\n return;\n }\n\n var seekableStart = liveTracker.seekableStart();\n var seekableEnd = liveTracker.liveCurrentTime();\n newTime = seekableStart + distance * liveTracker.liveWindow(); // Don't let video end while scrubbing.\n\n if (newTime >= seekableEnd) {\n newTime = seekableEnd;\n } // Compensate for precision differences so that currentTime is not less\n // than seekable start\n\n\n if (newTime <= seekableStart) {\n newTime = seekableStart + 0.1;\n } // On android seekableEnd can be Infinity sometimes,\n // this will cause newTime to be Infinity, which is\n // not a valid currentTime.\n\n\n if (newTime === Infinity) {\n return;\n }\n } // Set new time (tell player to seek to new time)\n\n\n this.userSeek_(newTime);\n };\n\n _proto.enable = function enable() {\n _Slider.prototype.enable.call(this);\n\n var mouseTimeDisplay = this.getChild('mouseTimeDisplay');\n\n if (!mouseTimeDisplay) {\n return;\n }\n\n mouseTimeDisplay.show();\n };\n\n _proto.disable = function disable() {\n _Slider.prototype.disable.call(this);\n\n var mouseTimeDisplay = this.getChild('mouseTimeDisplay');\n\n if (!mouseTimeDisplay) {\n return;\n }\n\n mouseTimeDisplay.hide();\n }\n /**\n * Handle mouse up on seek bar\n *\n * @param {EventTarget~Event} event\n * The `mouseup` event that caused this to run.\n *\n * @listens mouseup\n */\n ;\n\n _proto.handleMouseUp = function handleMouseUp(event) {\n _Slider.prototype.handleMouseUp.call(this, event); // Stop event propagation to prevent double fire in progress-control.js\n\n\n if (event) {\n event.stopPropagation();\n }\n\n this.player_.scrubbing(false);\n /**\n * Trigger timeupdate because we're done seeking and the time has changed.\n * This is particularly useful for if the player is paused to time the time displays.\n *\n * @event Tech#timeupdate\n * @type {EventTarget~Event}\n */\n\n this.player_.trigger({\n type: 'timeupdate',\n target: this,\n manuallyTriggered: true\n });\n\n if (this.videoWasPlaying) {\n silencePromise(this.player_.play());\n } else {\n // We're done seeking and the time has changed.\n // If the player is paused, make sure we display the correct time on the seek bar.\n this.update_();\n }\n }\n /**\n * Move more quickly fast forward for keyboard-only users\n */\n ;\n\n _proto.stepForward = function stepForward() {\n this.userSeek_(this.player_.currentTime() + STEP_SECONDS);\n }\n /**\n * Move more quickly rewind for keyboard-only users\n */\n ;\n\n _proto.stepBack = function stepBack() {\n this.userSeek_(this.player_.currentTime() - STEP_SECONDS);\n }\n /**\n * Toggles the playback state of the player\n * This gets called when enter or space is used on the seekbar\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called\n *\n */\n ;\n\n _proto.handleAction = function handleAction(event) {\n if (this.player_.paused()) {\n this.player_.play();\n } else {\n this.player_.pause();\n }\n }\n /**\n * Called when this SeekBar has focus and a key gets pressed down.\n * Supports the following keys:\n *\n * Space or Enter key fire a click event\n * Home key moves to start of the timeline\n * End key moves to end of the timeline\n * Digit \"0\" through \"9\" keys move to 0%, 10% ... 80%, 90% of the timeline\n * PageDown key moves back a larger step than ArrowDown\n * PageUp key moves forward a large step\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n var liveTracker = this.player_.liveTracker;\n\n if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n event.preventDefault();\n event.stopPropagation();\n this.handleAction(event);\n } else if (keycode.isEventKey(event, 'Home')) {\n event.preventDefault();\n event.stopPropagation();\n this.userSeek_(0);\n } else if (keycode.isEventKey(event, 'End')) {\n event.preventDefault();\n event.stopPropagation();\n\n if (liveTracker && liveTracker.isLive()) {\n this.userSeek_(liveTracker.liveCurrentTime());\n } else {\n this.userSeek_(this.player_.duration());\n }\n } else if (/^[0-9]$/.test(keycode(event))) {\n event.preventDefault();\n event.stopPropagation();\n var gotoFraction = (keycode.codes[keycode(event)] - keycode.codes['0']) * 10.0 / 100.0;\n\n if (liveTracker && liveTracker.isLive()) {\n this.userSeek_(liveTracker.seekableStart() + liveTracker.liveWindow() * gotoFraction);\n } else {\n this.userSeek_(this.player_.duration() * gotoFraction);\n }\n } else if (keycode.isEventKey(event, 'PgDn')) {\n event.preventDefault();\n event.stopPropagation();\n this.userSeek_(this.player_.currentTime() - STEP_SECONDS * PAGE_KEY_MULTIPLIER);\n } else if (keycode.isEventKey(event, 'PgUp')) {\n event.preventDefault();\n event.stopPropagation();\n this.userSeek_(this.player_.currentTime() + STEP_SECONDS * PAGE_KEY_MULTIPLIER);\n } else {\n // Pass keydown handling up for unsupported keys\n _Slider.prototype.handleKeyDown.call(this, event);\n }\n };\n\n _proto.dispose = function dispose() {\n this.disableInterval_();\n this.off(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);\n\n if (this.player_.liveTracker) {\n this.off(this.player_.liveTracker, 'liveedgechange', this.update);\n }\n\n this.off(this.player_, ['playing'], this.enableIntervalHandler_);\n this.off(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_); // we don't need to update the play progress if the document is hidden,\n // also, this causes the CPU to spike and eventually crash the page on IE11.\n\n if ('hidden' in document && 'visibilityState' in document) {\n this.off(document, 'visibilitychange', this.toggleVisibility_);\n }\n\n _Slider.prototype.dispose.call(this);\n };\n\n return SeekBar;\n}(Slider);\n/**\n * Default options for the `SeekBar`\n *\n * @type {Object}\n * @private\n */\n\n\nSeekBar.prototype.options_ = {\n children: ['loadProgressBar', 'playProgressBar'],\n barName: 'playProgressBar'\n}; // MouseTimeDisplay tooltips should not be added to a player on mobile devices\n\nif (!IS_IOS && !IS_ANDROID) {\n SeekBar.prototype.options_.children.splice(1, 0, 'mouseTimeDisplay');\n}\n\nComponent$1.registerComponent('SeekBar', SeekBar);\n\n/**\n * The Progress Control component contains the seek bar, load progress,\n * and play progress.\n *\n * @extends Component\n */\n\nvar ProgressControl = /*#__PURE__*/function (_Component) {\n _inheritsLoose(ProgressControl, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function ProgressControl(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n _this.handleMouseMove = throttle(bind(_assertThisInitialized(_this), _this.handleMouseMove), UPDATE_REFRESH_INTERVAL);\n _this.throttledHandleMouseSeek = throttle(bind(_assertThisInitialized(_this), _this.handleMouseSeek), UPDATE_REFRESH_INTERVAL);\n\n _this.handleMouseUpHandler_ = function (e) {\n return _this.handleMouseUp(e);\n };\n\n _this.handleMouseDownHandler_ = function (e) {\n return _this.handleMouseDown(e);\n };\n\n _this.enable();\n\n return _this;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = ProgressControl.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-progress-control vjs-control'\n });\n }\n /**\n * When the mouse moves over the `ProgressControl`, the pointer position\n * gets passed down to the `MouseTimeDisplay` component.\n *\n * @param {EventTarget~Event} event\n * The `mousemove` event that caused this function to run.\n *\n * @listen mousemove\n */\n ;\n\n _proto.handleMouseMove = function handleMouseMove(event) {\n var seekBar = this.getChild('seekBar');\n\n if (!seekBar) {\n return;\n }\n\n var playProgressBar = seekBar.getChild('playProgressBar');\n var mouseTimeDisplay = seekBar.getChild('mouseTimeDisplay');\n\n if (!playProgressBar && !mouseTimeDisplay) {\n return;\n }\n\n var seekBarEl = seekBar.el();\n var seekBarRect = findPosition(seekBarEl);\n var seekBarPoint = getPointerPosition(seekBarEl, event).x; // The default skin has a gap on either side of the `SeekBar`. This means\n // that it's possible to trigger this behavior outside the boundaries of\n // the `SeekBar`. This ensures we stay within it at all times.\n\n seekBarPoint = clamp(seekBarPoint, 0, 1);\n\n if (mouseTimeDisplay) {\n mouseTimeDisplay.update(seekBarRect, seekBarPoint);\n }\n\n if (playProgressBar) {\n playProgressBar.update(seekBarRect, seekBar.getProgress());\n }\n }\n /**\n * A throttled version of the {@link ProgressControl#handleMouseSeek} listener.\n *\n * @method ProgressControl#throttledHandleMouseSeek\n * @param {EventTarget~Event} event\n * The `mousemove` event that caused this function to run.\n *\n * @listen mousemove\n * @listen touchmove\n */\n\n /**\n * Handle `mousemove` or `touchmove` events on the `ProgressControl`.\n *\n * @param {EventTarget~Event} event\n * `mousedown` or `touchstart` event that triggered this function\n *\n * @listens mousemove\n * @listens touchmove\n */\n ;\n\n _proto.handleMouseSeek = function handleMouseSeek(event) {\n var seekBar = this.getChild('seekBar');\n\n if (seekBar) {\n seekBar.handleMouseMove(event);\n }\n }\n /**\n * Are controls are currently enabled for this progress control.\n *\n * @return {boolean}\n * true if controls are enabled, false otherwise\n */\n ;\n\n _proto.enabled = function enabled() {\n return this.enabled_;\n }\n /**\n * Disable all controls on the progress control and its children\n */\n ;\n\n _proto.disable = function disable() {\n this.children().forEach(function (child) {\n return child.disable && child.disable();\n });\n\n if (!this.enabled()) {\n return;\n }\n\n this.off(['mousedown', 'touchstart'], this.handleMouseDownHandler_);\n this.off(this.el_, 'mousemove', this.handleMouseMove);\n this.removeListenersAddedOnMousedownAndTouchstart();\n this.addClass('disabled');\n this.enabled_ = false; // Restore normal playback state if controls are disabled while scrubbing\n\n if (this.player_.scrubbing()) {\n var seekBar = this.getChild('seekBar');\n this.player_.scrubbing(false);\n\n if (seekBar.videoWasPlaying) {\n silencePromise(this.player_.play());\n }\n }\n }\n /**\n * Enable all controls on the progress control and its children\n */\n ;\n\n _proto.enable = function enable() {\n this.children().forEach(function (child) {\n return child.enable && child.enable();\n });\n\n if (this.enabled()) {\n return;\n }\n\n this.on(['mousedown', 'touchstart'], this.handleMouseDownHandler_);\n this.on(this.el_, 'mousemove', this.handleMouseMove);\n this.removeClass('disabled');\n this.enabled_ = true;\n }\n /**\n * Cleanup listeners after the user finishes interacting with the progress controls\n */\n ;\n\n _proto.removeListenersAddedOnMousedownAndTouchstart = function removeListenersAddedOnMousedownAndTouchstart() {\n var doc = this.el_.ownerDocument;\n this.off(doc, 'mousemove', this.throttledHandleMouseSeek);\n this.off(doc, 'touchmove', this.throttledHandleMouseSeek);\n this.off(doc, 'mouseup', this.handleMouseUpHandler_);\n this.off(doc, 'touchend', this.handleMouseUpHandler_);\n }\n /**\n * Handle `mousedown` or `touchstart` events on the `ProgressControl`.\n *\n * @param {EventTarget~Event} event\n * `mousedown` or `touchstart` event that triggered this function\n *\n * @listens mousedown\n * @listens touchstart\n */\n ;\n\n _proto.handleMouseDown = function handleMouseDown(event) {\n var doc = this.el_.ownerDocument;\n var seekBar = this.getChild('seekBar');\n\n if (seekBar) {\n seekBar.handleMouseDown(event);\n }\n\n this.on(doc, 'mousemove', this.throttledHandleMouseSeek);\n this.on(doc, 'touchmove', this.throttledHandleMouseSeek);\n this.on(doc, 'mouseup', this.handleMouseUpHandler_);\n this.on(doc, 'touchend', this.handleMouseUpHandler_);\n }\n /**\n * Handle `mouseup` or `touchend` events on the `ProgressControl`.\n *\n * @param {EventTarget~Event} event\n * `mouseup` or `touchend` event that triggered this function.\n *\n * @listens touchend\n * @listens mouseup\n */\n ;\n\n _proto.handleMouseUp = function handleMouseUp(event) {\n var seekBar = this.getChild('seekBar');\n\n if (seekBar) {\n seekBar.handleMouseUp(event);\n }\n\n this.removeListenersAddedOnMousedownAndTouchstart();\n };\n\n return ProgressControl;\n}(Component$1);\n/**\n * Default options for `ProgressControl`\n *\n * @type {Object}\n * @private\n */\n\n\nProgressControl.prototype.options_ = {\n children: ['seekBar']\n};\nComponent$1.registerComponent('ProgressControl', ProgressControl);\n\n/**\n * Toggle Picture-in-Picture mode\n *\n * @extends Button\n */\n\nvar PictureInPictureToggle = /*#__PURE__*/function (_Button) {\n _inheritsLoose(PictureInPictureToggle, _Button);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @listens Player#enterpictureinpicture\n * @listens Player#leavepictureinpicture\n */\n function PictureInPictureToggle(player, options) {\n var _this;\n\n _this = _Button.call(this, player, options) || this;\n\n _this.on(player, ['enterpictureinpicture', 'leavepictureinpicture'], function (e) {\n return _this.handlePictureInPictureChange(e);\n });\n\n _this.on(player, ['disablepictureinpicturechanged', 'loadedmetadata'], function (e) {\n return _this.handlePictureInPictureEnabledChange(e);\n });\n\n _this.on(player, ['loadedmetadata', 'audioonlymodechange', 'audiopostermodechange'], function () {\n // This audio detection will not detect HLS or DASH audio-only streams because there was no reliable way to detect them at the time\n var isSourceAudio = player.currentType().substring(0, 5) === 'audio';\n\n if (isSourceAudio || player.audioPosterMode() || player.audioOnlyMode()) {\n if (player.isInPictureInPicture()) {\n player.exitPictureInPicture();\n }\n\n _this.hide();\n } else {\n _this.show();\n }\n }); // TODO: Deactivate button on player emptied event.\n\n\n _this.disable();\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = PictureInPictureToggle.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-picture-in-picture-control \" + _Button.prototype.buildCSSClass.call(this);\n }\n /**\n * Enables or disables button based on document.pictureInPictureEnabled property value\n * or on value returned by player.disablePictureInPicture() method.\n */\n ;\n\n _proto.handlePictureInPictureEnabledChange = function handlePictureInPictureEnabledChange() {\n if (document.pictureInPictureEnabled && this.player_.disablePictureInPicture() === false) {\n this.enable();\n } else {\n this.disable();\n }\n }\n /**\n * Handles enterpictureinpicture and leavepictureinpicture on the player and change control text accordingly.\n *\n * @param {EventTarget~Event} [event]\n * The {@link Player#enterpictureinpicture} or {@link Player#leavepictureinpicture} event that caused this function to be\n * called.\n *\n * @listens Player#enterpictureinpicture\n * @listens Player#leavepictureinpicture\n */\n ;\n\n _proto.handlePictureInPictureChange = function handlePictureInPictureChange(event) {\n if (this.player_.isInPictureInPicture()) {\n this.controlText('Exit Picture-in-Picture');\n } else {\n this.controlText('Picture-in-Picture');\n }\n\n this.handlePictureInPictureEnabledChange();\n }\n /**\n * This gets called when an `PictureInPictureToggle` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n if (!this.player_.isInPictureInPicture()) {\n this.player_.requestPictureInPicture();\n } else {\n this.player_.exitPictureInPicture();\n }\n };\n\n return PictureInPictureToggle;\n}(Button);\n/**\n * The text that should display over the `PictureInPictureToggle`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\n\nPictureInPictureToggle.prototype.controlText_ = 'Picture-in-Picture';\nComponent$1.registerComponent('PictureInPictureToggle', PictureInPictureToggle);\n\n/**\n * Toggle fullscreen video\n *\n * @extends Button\n */\n\nvar FullscreenToggle = /*#__PURE__*/function (_Button) {\n _inheritsLoose(FullscreenToggle, _Button);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function FullscreenToggle(player, options) {\n var _this;\n\n _this = _Button.call(this, player, options) || this;\n\n _this.on(player, 'fullscreenchange', function (e) {\n return _this.handleFullscreenChange(e);\n });\n\n if (document[player.fsApi_.fullscreenEnabled] === false) {\n _this.disable();\n }\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = FullscreenToggle.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-fullscreen-control \" + _Button.prototype.buildCSSClass.call(this);\n }\n /**\n * Handles fullscreenchange on the player and change control text accordingly.\n *\n * @param {EventTarget~Event} [event]\n * The {@link Player#fullscreenchange} event that caused this function to be\n * called.\n *\n * @listens Player#fullscreenchange\n */\n ;\n\n _proto.handleFullscreenChange = function handleFullscreenChange(event) {\n if (this.player_.isFullscreen()) {\n this.controlText('Non-Fullscreen');\n } else {\n this.controlText('Fullscreen');\n }\n }\n /**\n * This gets called when an `FullscreenToggle` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n if (!this.player_.isFullscreen()) {\n this.player_.requestFullscreen();\n } else {\n this.player_.exitFullscreen();\n }\n };\n\n return FullscreenToggle;\n}(Button);\n/**\n * The text that should display over the `FullscreenToggle`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\n\nFullscreenToggle.prototype.controlText_ = 'Fullscreen';\nComponent$1.registerComponent('FullscreenToggle', FullscreenToggle);\n\n/**\n * Check if volume control is supported and if it isn't hide the\n * `Component` that was passed using the `vjs-hidden` class.\n *\n * @param {Component} self\n * The component that should be hidden if volume is unsupported\n *\n * @param {Player} player\n * A reference to the player\n *\n * @private\n */\nvar checkVolumeSupport = function checkVolumeSupport(self, player) {\n // hide volume controls when they're not supported by the current tech\n if (player.tech_ && !player.tech_.featuresVolumeControl) {\n self.addClass('vjs-hidden');\n }\n\n self.on(player, 'loadstart', function () {\n if (!player.tech_.featuresVolumeControl) {\n self.addClass('vjs-hidden');\n } else {\n self.removeClass('vjs-hidden');\n }\n });\n};\n\n/**\n * Shows volume level\n *\n * @extends Component\n */\n\nvar VolumeLevel = /*#__PURE__*/function (_Component) {\n _inheritsLoose(VolumeLevel, _Component);\n\n function VolumeLevel() {\n return _Component.apply(this, arguments) || this;\n }\n\n var _proto = VolumeLevel.prototype;\n\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n _proto.createEl = function createEl() {\n var el = _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-volume-level'\n });\n\n el.appendChild(_Component.prototype.createEl.call(this, 'span', {\n className: 'vjs-control-text'\n }));\n return el;\n };\n\n return VolumeLevel;\n}(Component$1);\n\nComponent$1.registerComponent('VolumeLevel', VolumeLevel);\n\n/**\n * Volume level tooltips display a volume above or side by side the volume bar.\n *\n * @extends Component\n */\n\nvar VolumeLevelTooltip = /*#__PURE__*/function (_Component) {\n _inheritsLoose(VolumeLevelTooltip, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The {@link Player} that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function VolumeLevelTooltip(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n _this.update = throttle(bind(_assertThisInitialized(_this), _this.update), UPDATE_REFRESH_INTERVAL);\n return _this;\n }\n /**\n * Create the volume tooltip DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = VolumeLevelTooltip.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-volume-tooltip'\n }, {\n 'aria-hidden': 'true'\n });\n }\n /**\n * Updates the position of the tooltip relative to the `VolumeBar` and\n * its content text.\n *\n * @param {Object} rangeBarRect\n * The `ClientRect` for the {@link VolumeBar} element.\n *\n * @param {number} rangeBarPoint\n * A number from 0 to 1, representing a horizontal/vertical reference point\n * from the left edge of the {@link VolumeBar}\n *\n * @param {boolean} vertical\n * Referees to the Volume control position\n * in the control bar{@link VolumeControl}\n *\n */\n ;\n\n _proto.update = function update(rangeBarRect, rangeBarPoint, vertical, content) {\n if (!vertical) {\n var tooltipRect = getBoundingClientRect(this.el_);\n var playerRect = getBoundingClientRect(this.player_.el());\n var volumeBarPointPx = rangeBarRect.width * rangeBarPoint;\n\n if (!playerRect || !tooltipRect) {\n return;\n }\n\n var spaceLeftOfPoint = rangeBarRect.left - playerRect.left + volumeBarPointPx;\n var spaceRightOfPoint = rangeBarRect.width - volumeBarPointPx + (playerRect.right - rangeBarRect.right);\n var pullTooltipBy = tooltipRect.width / 2;\n\n if (spaceLeftOfPoint < pullTooltipBy) {\n pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;\n } else if (spaceRightOfPoint < pullTooltipBy) {\n pullTooltipBy = spaceRightOfPoint;\n }\n\n if (pullTooltipBy < 0) {\n pullTooltipBy = 0;\n } else if (pullTooltipBy > tooltipRect.width) {\n pullTooltipBy = tooltipRect.width;\n }\n\n this.el_.style.right = \"-\" + pullTooltipBy + \"px\";\n }\n\n this.write(content + \"%\");\n }\n /**\n * Write the volume to the tooltip DOM element.\n *\n * @param {string} content\n * The formatted volume for the tooltip.\n */\n ;\n\n _proto.write = function write(content) {\n textContent(this.el_, content);\n }\n /**\n * Updates the position of the volume tooltip relative to the `VolumeBar`.\n *\n * @param {Object} rangeBarRect\n * The `ClientRect` for the {@link VolumeBar} element.\n *\n * @param {number} rangeBarPoint\n * A number from 0 to 1, representing a horizontal/vertical reference point\n * from the left edge of the {@link VolumeBar}\n *\n * @param {boolean} vertical\n * Referees to the Volume control position\n * in the control bar{@link VolumeControl}\n *\n * @param {number} volume\n * The volume level to update the tooltip to\n *\n * @param {Function} cb\n * A function that will be called during the request animation frame\n * for tooltips that need to do additional animations from the default\n */\n ;\n\n _proto.updateVolume = function updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, cb) {\n var _this2 = this;\n\n this.requestNamedAnimationFrame('VolumeLevelTooltip#updateVolume', function () {\n _this2.update(rangeBarRect, rangeBarPoint, vertical, volume.toFixed(0));\n\n if (cb) {\n cb();\n }\n });\n };\n\n return VolumeLevelTooltip;\n}(Component$1);\n\nComponent$1.registerComponent('VolumeLevelTooltip', VolumeLevelTooltip);\n\n/**\n * The {@link MouseVolumeLevelDisplay} component tracks mouse movement over the\n * {@link VolumeControl}. It displays an indicator and a {@link VolumeLevelTooltip}\n * indicating the volume level which is represented by a given point in the\n * {@link VolumeBar}.\n *\n * @extends Component\n */\n\nvar MouseVolumeLevelDisplay = /*#__PURE__*/function (_Component) {\n _inheritsLoose(MouseVolumeLevelDisplay, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The {@link Player} that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function MouseVolumeLevelDisplay(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n _this.update = throttle(bind(_assertThisInitialized(_this), _this.update), UPDATE_REFRESH_INTERVAL);\n return _this;\n }\n /**\n * Create the DOM element for this class.\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = MouseVolumeLevelDisplay.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-mouse-display'\n });\n }\n /**\n * Enquires updates to its own DOM as well as the DOM of its\n * {@link VolumeLevelTooltip} child.\n *\n * @param {Object} rangeBarRect\n * The `ClientRect` for the {@link VolumeBar} element.\n *\n * @param {number} rangeBarPoint\n * A number from 0 to 1, representing a horizontal/vertical reference point\n * from the left edge of the {@link VolumeBar}\n *\n * @param {boolean} vertical\n * Referees to the Volume control position\n * in the control bar{@link VolumeControl}\n *\n */\n ;\n\n _proto.update = function update(rangeBarRect, rangeBarPoint, vertical) {\n var _this2 = this;\n\n var volume = 100 * rangeBarPoint;\n this.getChild('volumeLevelTooltip').updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, function () {\n if (vertical) {\n _this2.el_.style.bottom = rangeBarRect.height * rangeBarPoint + \"px\";\n } else {\n _this2.el_.style.left = rangeBarRect.width * rangeBarPoint + \"px\";\n }\n });\n };\n\n return MouseVolumeLevelDisplay;\n}(Component$1);\n/**\n * Default options for `MouseVolumeLevelDisplay`\n *\n * @type {Object}\n * @private\n */\n\n\nMouseVolumeLevelDisplay.prototype.options_ = {\n children: ['volumeLevelTooltip']\n};\nComponent$1.registerComponent('MouseVolumeLevelDisplay', MouseVolumeLevelDisplay);\n\n/**\n * The bar that contains the volume level and can be clicked on to adjust the level\n *\n * @extends Slider\n */\n\nvar VolumeBar = /*#__PURE__*/function (_Slider) {\n _inheritsLoose(VolumeBar, _Slider);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function VolumeBar(player, options) {\n var _this;\n\n _this = _Slider.call(this, player, options) || this;\n\n _this.on('slideractive', function (e) {\n return _this.updateLastVolume_(e);\n });\n\n _this.on(player, 'volumechange', function (e) {\n return _this.updateARIAAttributes(e);\n });\n\n player.ready(function () {\n return _this.updateARIAAttributes();\n });\n return _this;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = VolumeBar.prototype;\n\n _proto.createEl = function createEl() {\n return _Slider.prototype.createEl.call(this, 'div', {\n className: 'vjs-volume-bar vjs-slider-bar'\n }, {\n 'aria-label': this.localize('Volume Level'),\n 'aria-live': 'polite'\n });\n }\n /**\n * Handle mouse down on volume bar\n *\n * @param {EventTarget~Event} event\n * The `mousedown` event that caused this to run.\n *\n * @listens mousedown\n */\n ;\n\n _proto.handleMouseDown = function handleMouseDown(event) {\n if (!isSingleLeftClick(event)) {\n return;\n }\n\n _Slider.prototype.handleMouseDown.call(this, event);\n }\n /**\n * Handle movement events on the {@link VolumeMenuButton}.\n *\n * @param {EventTarget~Event} event\n * The event that caused this function to run.\n *\n * @listens mousemove\n */\n ;\n\n _proto.handleMouseMove = function handleMouseMove(event) {\n var mouseVolumeLevelDisplay = this.getChild('mouseVolumeLevelDisplay');\n\n if (mouseVolumeLevelDisplay) {\n var volumeBarEl = this.el();\n var volumeBarRect = getBoundingClientRect(volumeBarEl);\n var vertical = this.vertical();\n var volumeBarPoint = getPointerPosition(volumeBarEl, event);\n volumeBarPoint = vertical ? volumeBarPoint.y : volumeBarPoint.x; // The default skin has a gap on either side of the `VolumeBar`. This means\n // that it's possible to trigger this behavior outside the boundaries of\n // the `VolumeBar`. This ensures we stay within it at all times.\n\n volumeBarPoint = clamp(volumeBarPoint, 0, 1);\n mouseVolumeLevelDisplay.update(volumeBarRect, volumeBarPoint, vertical);\n }\n\n if (!isSingleLeftClick(event)) {\n return;\n }\n\n this.checkMuted();\n this.player_.volume(this.calculateDistance(event));\n }\n /**\n * If the player is muted unmute it.\n */\n ;\n\n _proto.checkMuted = function checkMuted() {\n if (this.player_.muted()) {\n this.player_.muted(false);\n }\n }\n /**\n * Get percent of volume level\n *\n * @return {number}\n * Volume level percent as a decimal number.\n */\n ;\n\n _proto.getPercent = function getPercent() {\n if (this.player_.muted()) {\n return 0;\n }\n\n return this.player_.volume();\n }\n /**\n * Increase volume level for keyboard users\n */\n ;\n\n _proto.stepForward = function stepForward() {\n this.checkMuted();\n this.player_.volume(this.player_.volume() + 0.1);\n }\n /**\n * Decrease volume level for keyboard users\n */\n ;\n\n _proto.stepBack = function stepBack() {\n this.checkMuted();\n this.player_.volume(this.player_.volume() - 0.1);\n }\n /**\n * Update ARIA accessibility attributes\n *\n * @param {EventTarget~Event} [event]\n * The `volumechange` event that caused this function to run.\n *\n * @listens Player#volumechange\n */\n ;\n\n _proto.updateARIAAttributes = function updateARIAAttributes(event) {\n var ariaValue = this.player_.muted() ? 0 : this.volumeAsPercentage_();\n this.el_.setAttribute('aria-valuenow', ariaValue);\n this.el_.setAttribute('aria-valuetext', ariaValue + '%');\n }\n /**\n * Returns the current value of the player volume as a percentage\n *\n * @private\n */\n ;\n\n _proto.volumeAsPercentage_ = function volumeAsPercentage_() {\n return Math.round(this.player_.volume() * 100);\n }\n /**\n * When user starts dragging the VolumeBar, store the volume and listen for\n * the end of the drag. When the drag ends, if the volume was set to zero,\n * set lastVolume to the stored volume.\n *\n * @listens slideractive\n * @private\n */\n ;\n\n _proto.updateLastVolume_ = function updateLastVolume_() {\n var _this2 = this;\n\n var volumeBeforeDrag = this.player_.volume();\n this.one('sliderinactive', function () {\n if (_this2.player_.volume() === 0) {\n _this2.player_.lastVolume_(volumeBeforeDrag);\n }\n });\n };\n\n return VolumeBar;\n}(Slider);\n/**\n * Default options for the `VolumeBar`\n *\n * @type {Object}\n * @private\n */\n\n\nVolumeBar.prototype.options_ = {\n children: ['volumeLevel'],\n barName: 'volumeLevel'\n}; // MouseVolumeLevelDisplay tooltip should not be added to a player on mobile devices\n\nif (!IS_IOS && !IS_ANDROID) {\n VolumeBar.prototype.options_.children.splice(0, 0, 'mouseVolumeLevelDisplay');\n}\n/**\n * Call the update event for this Slider when this event happens on the player.\n *\n * @type {string}\n */\n\n\nVolumeBar.prototype.playerEvent = 'volumechange';\nComponent$1.registerComponent('VolumeBar', VolumeBar);\n\n/**\n * The component for controlling the volume level\n *\n * @extends Component\n */\n\nvar VolumeControl = /*#__PURE__*/function (_Component) {\n _inheritsLoose(VolumeControl, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options={}]\n * The key/value store of player options.\n */\n function VolumeControl(player, options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n options.vertical = options.vertical || false; // Pass the vertical option down to the VolumeBar if\n // the VolumeBar is turned on.\n\n if (typeof options.volumeBar === 'undefined' || isPlain(options.volumeBar)) {\n options.volumeBar = options.volumeBar || {};\n options.volumeBar.vertical = options.vertical;\n }\n\n _this = _Component.call(this, player, options) || this; // hide this control if volume support is missing\n\n checkVolumeSupport(_assertThisInitialized(_this), player);\n _this.throttledHandleMouseMove = throttle(bind(_assertThisInitialized(_this), _this.handleMouseMove), UPDATE_REFRESH_INTERVAL);\n\n _this.handleMouseUpHandler_ = function (e) {\n return _this.handleMouseUp(e);\n };\n\n _this.on('mousedown', function (e) {\n return _this.handleMouseDown(e);\n });\n\n _this.on('touchstart', function (e) {\n return _this.handleMouseDown(e);\n });\n\n _this.on('mousemove', function (e) {\n return _this.handleMouseMove(e);\n }); // while the slider is active (the mouse has been pressed down and\n // is dragging) or in focus we do not want to hide the VolumeBar\n\n\n _this.on(_this.volumeBar, ['focus', 'slideractive'], function () {\n _this.volumeBar.addClass('vjs-slider-active');\n\n _this.addClass('vjs-slider-active');\n\n _this.trigger('slideractive');\n });\n\n _this.on(_this.volumeBar, ['blur', 'sliderinactive'], function () {\n _this.volumeBar.removeClass('vjs-slider-active');\n\n _this.removeClass('vjs-slider-active');\n\n _this.trigger('sliderinactive');\n });\n\n return _this;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = VolumeControl.prototype;\n\n _proto.createEl = function createEl() {\n var orientationClass = 'vjs-volume-horizontal';\n\n if (this.options_.vertical) {\n orientationClass = 'vjs-volume-vertical';\n }\n\n return _Component.prototype.createEl.call(this, 'div', {\n className: \"vjs-volume-control vjs-control \" + orientationClass\n });\n }\n /**\n * Handle `mousedown` or `touchstart` events on the `VolumeControl`.\n *\n * @param {EventTarget~Event} event\n * `mousedown` or `touchstart` event that triggered this function\n *\n * @listens mousedown\n * @listens touchstart\n */\n ;\n\n _proto.handleMouseDown = function handleMouseDown(event) {\n var doc = this.el_.ownerDocument;\n this.on(doc, 'mousemove', this.throttledHandleMouseMove);\n this.on(doc, 'touchmove', this.throttledHandleMouseMove);\n this.on(doc, 'mouseup', this.handleMouseUpHandler_);\n this.on(doc, 'touchend', this.handleMouseUpHandler_);\n }\n /**\n * Handle `mouseup` or `touchend` events on the `VolumeControl`.\n *\n * @param {EventTarget~Event} event\n * `mouseup` or `touchend` event that triggered this function.\n *\n * @listens touchend\n * @listens mouseup\n */\n ;\n\n _proto.handleMouseUp = function handleMouseUp(event) {\n var doc = this.el_.ownerDocument;\n this.off(doc, 'mousemove', this.throttledHandleMouseMove);\n this.off(doc, 'touchmove', this.throttledHandleMouseMove);\n this.off(doc, 'mouseup', this.handleMouseUpHandler_);\n this.off(doc, 'touchend', this.handleMouseUpHandler_);\n }\n /**\n * Handle `mousedown` or `touchstart` events on the `VolumeControl`.\n *\n * @param {EventTarget~Event} event\n * `mousedown` or `touchstart` event that triggered this function\n *\n * @listens mousedown\n * @listens touchstart\n */\n ;\n\n _proto.handleMouseMove = function handleMouseMove(event) {\n this.volumeBar.handleMouseMove(event);\n };\n\n return VolumeControl;\n}(Component$1);\n/**\n * Default options for the `VolumeControl`\n *\n * @type {Object}\n * @private\n */\n\n\nVolumeControl.prototype.options_ = {\n children: ['volumeBar']\n};\nComponent$1.registerComponent('VolumeControl', VolumeControl);\n\n/**\n * Check if muting volume is supported and if it isn't hide the mute toggle\n * button.\n *\n * @param {Component} self\n * A reference to the mute toggle button\n *\n * @param {Player} player\n * A reference to the player\n *\n * @private\n */\nvar checkMuteSupport = function checkMuteSupport(self, player) {\n // hide mute toggle button if it's not supported by the current tech\n if (player.tech_ && !player.tech_.featuresMuteControl) {\n self.addClass('vjs-hidden');\n }\n\n self.on(player, 'loadstart', function () {\n if (!player.tech_.featuresMuteControl) {\n self.addClass('vjs-hidden');\n } else {\n self.removeClass('vjs-hidden');\n }\n });\n};\n\n/**\n * A button component for muting the audio.\n *\n * @extends Button\n */\n\nvar MuteToggle = /*#__PURE__*/function (_Button) {\n _inheritsLoose(MuteToggle, _Button);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function MuteToggle(player, options) {\n var _this;\n\n _this = _Button.call(this, player, options) || this; // hide this control if volume support is missing\n\n checkMuteSupport(_assertThisInitialized(_this), player);\n\n _this.on(player, ['loadstart', 'volumechange'], function (e) {\n return _this.update(e);\n });\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = MuteToggle.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-mute-control \" + _Button.prototype.buildCSSClass.call(this);\n }\n /**\n * This gets called when an `MuteToggle` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n var vol = this.player_.volume();\n var lastVolume = this.player_.lastVolume_();\n\n if (vol === 0) {\n var volumeToSet = lastVolume < 0.1 ? 0.1 : lastVolume;\n this.player_.volume(volumeToSet);\n this.player_.muted(false);\n } else {\n this.player_.muted(this.player_.muted() ? false : true);\n }\n }\n /**\n * Update the `MuteToggle` button based on the state of `volume` and `muted`\n * on the player.\n *\n * @param {EventTarget~Event} [event]\n * The {@link Player#loadstart} event if this function was called\n * through an event.\n *\n * @listens Player#loadstart\n * @listens Player#volumechange\n */\n ;\n\n _proto.update = function update(event) {\n this.updateIcon_();\n this.updateControlText_();\n }\n /**\n * Update the appearance of the `MuteToggle` icon.\n *\n * Possible states (given `level` variable below):\n * - 0: crossed out\n * - 1: zero bars of volume\n * - 2: one bar of volume\n * - 3: two bars of volume\n *\n * @private\n */\n ;\n\n _proto.updateIcon_ = function updateIcon_() {\n var vol = this.player_.volume();\n var level = 3; // in iOS when a player is loaded with muted attribute\n // and volume is changed with a native mute button\n // we want to make sure muted state is updated\n\n if (IS_IOS && this.player_.tech_ && this.player_.tech_.el_) {\n this.player_.muted(this.player_.tech_.el_.muted);\n }\n\n if (vol === 0 || this.player_.muted()) {\n level = 0;\n } else if (vol < 0.33) {\n level = 1;\n } else if (vol < 0.67) {\n level = 2;\n } // TODO improve muted icon classes\n\n\n for (var i = 0; i < 4; i++) {\n removeClass(this.el_, \"vjs-vol-\" + i);\n }\n\n addClass(this.el_, \"vjs-vol-\" + level);\n }\n /**\n * If `muted` has changed on the player, update the control text\n * (`title` attribute on `vjs-mute-control` element and content of\n * `vjs-control-text` element).\n *\n * @private\n */\n ;\n\n _proto.updateControlText_ = function updateControlText_() {\n var soundOff = this.player_.muted() || this.player_.volume() === 0;\n var text = soundOff ? 'Unmute' : 'Mute';\n\n if (this.controlText() !== text) {\n this.controlText(text);\n }\n };\n\n return MuteToggle;\n}(Button);\n/**\n * The text that should display over the `MuteToggle`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\n\nMuteToggle.prototype.controlText_ = 'Mute';\nComponent$1.registerComponent('MuteToggle', MuteToggle);\n\n/**\n * A Component to contain the MuteToggle and VolumeControl so that\n * they can work together.\n *\n * @extends Component\n */\n\nvar VolumePanel = /*#__PURE__*/function (_Component) {\n _inheritsLoose(VolumePanel, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options={}]\n * The key/value store of player options.\n */\n function VolumePanel(player, options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n if (typeof options.inline !== 'undefined') {\n options.inline = options.inline;\n } else {\n options.inline = true;\n } // pass the inline option down to the VolumeControl as vertical if\n // the VolumeControl is on.\n\n\n if (typeof options.volumeControl === 'undefined' || isPlain(options.volumeControl)) {\n options.volumeControl = options.volumeControl || {};\n options.volumeControl.vertical = !options.inline;\n }\n\n _this = _Component.call(this, player, options) || this; // this handler is used by mouse handler methods below\n\n _this.handleKeyPressHandler_ = function (e) {\n return _this.handleKeyPress(e);\n };\n\n _this.on(player, ['loadstart'], function (e) {\n return _this.volumePanelState_(e);\n });\n\n _this.on(_this.muteToggle, 'keyup', function (e) {\n return _this.handleKeyPress(e);\n });\n\n _this.on(_this.volumeControl, 'keyup', function (e) {\n return _this.handleVolumeControlKeyUp(e);\n });\n\n _this.on('keydown', function (e) {\n return _this.handleKeyPress(e);\n });\n\n _this.on('mouseover', function (e) {\n return _this.handleMouseOver(e);\n });\n\n _this.on('mouseout', function (e) {\n return _this.handleMouseOut(e);\n }); // while the slider is active (the mouse has been pressed down and\n // is dragging) we do not want to hide the VolumeBar\n\n\n _this.on(_this.volumeControl, ['slideractive'], _this.sliderActive_);\n\n _this.on(_this.volumeControl, ['sliderinactive'], _this.sliderInactive_);\n\n return _this;\n }\n /**\n * Add vjs-slider-active class to the VolumePanel\n *\n * @listens VolumeControl#slideractive\n * @private\n */\n\n\n var _proto = VolumePanel.prototype;\n\n _proto.sliderActive_ = function sliderActive_() {\n this.addClass('vjs-slider-active');\n }\n /**\n * Removes vjs-slider-active class to the VolumePanel\n *\n * @listens VolumeControl#sliderinactive\n * @private\n */\n ;\n\n _proto.sliderInactive_ = function sliderInactive_() {\n this.removeClass('vjs-slider-active');\n }\n /**\n * Adds vjs-hidden or vjs-mute-toggle-only to the VolumePanel\n * depending on MuteToggle and VolumeControl state\n *\n * @listens Player#loadstart\n * @private\n */\n ;\n\n _proto.volumePanelState_ = function volumePanelState_() {\n // hide volume panel if neither volume control or mute toggle\n // are displayed\n if (this.volumeControl.hasClass('vjs-hidden') && this.muteToggle.hasClass('vjs-hidden')) {\n this.addClass('vjs-hidden');\n } // if only mute toggle is visible we don't want\n // volume panel expanding when hovered or active\n\n\n if (this.volumeControl.hasClass('vjs-hidden') && !this.muteToggle.hasClass('vjs-hidden')) {\n this.addClass('vjs-mute-toggle-only');\n }\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n ;\n\n _proto.createEl = function createEl() {\n var orientationClass = 'vjs-volume-panel-horizontal';\n\n if (!this.options_.inline) {\n orientationClass = 'vjs-volume-panel-vertical';\n }\n\n return _Component.prototype.createEl.call(this, 'div', {\n className: \"vjs-volume-panel vjs-control \" + orientationClass\n });\n }\n /**\n * Dispose of the `volume-panel` and all child components.\n */\n ;\n\n _proto.dispose = function dispose() {\n this.handleMouseOut();\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Handles `keyup` events on the `VolumeControl`, looking for ESC, which closes\n * the volume panel and sets focus on `MuteToggle`.\n *\n * @param {EventTarget~Event} event\n * The `keyup` event that caused this function to be called.\n *\n * @listens keyup\n */\n ;\n\n _proto.handleVolumeControlKeyUp = function handleVolumeControlKeyUp(event) {\n if (keycode.isEventKey(event, 'Esc')) {\n this.muteToggle.focus();\n }\n }\n /**\n * This gets called when a `VolumePanel` gains hover via a `mouseover` event.\n * Turns on listening for `mouseover` event. When they happen it\n * calls `this.handleMouseOver`.\n *\n * @param {EventTarget~Event} event\n * The `mouseover` event that caused this function to be called.\n *\n * @listens mouseover\n */\n ;\n\n _proto.handleMouseOver = function handleMouseOver(event) {\n this.addClass('vjs-hover');\n on(document, 'keyup', this.handleKeyPressHandler_);\n }\n /**\n * This gets called when a `VolumePanel` gains hover via a `mouseout` event.\n * Turns on listening for `mouseout` event. When they happen it\n * calls `this.handleMouseOut`.\n *\n * @param {EventTarget~Event} event\n * The `mouseout` event that caused this function to be called.\n *\n * @listens mouseout\n */\n ;\n\n _proto.handleMouseOut = function handleMouseOut(event) {\n this.removeClass('vjs-hover');\n off(document, 'keyup', this.handleKeyPressHandler_);\n }\n /**\n * Handles `keyup` event on the document or `keydown` event on the `VolumePanel`,\n * looking for ESC, which hides the `VolumeControl`.\n *\n * @param {EventTarget~Event} event\n * The keypress that triggered this event.\n *\n * @listens keydown | keyup\n */\n ;\n\n _proto.handleKeyPress = function handleKeyPress(event) {\n if (keycode.isEventKey(event, 'Esc')) {\n this.handleMouseOut();\n }\n };\n\n return VolumePanel;\n}(Component$1);\n/**\n * Default options for the `VolumeControl`\n *\n * @type {Object}\n * @private\n */\n\n\nVolumePanel.prototype.options_ = {\n children: ['muteToggle', 'volumeControl']\n};\nComponent$1.registerComponent('VolumePanel', VolumePanel);\n\n/**\n * The Menu component is used to build popup menus, including subtitle and\n * captions selection menus.\n *\n * @extends Component\n */\n\nvar Menu = /*#__PURE__*/function (_Component) {\n _inheritsLoose(Menu, _Component);\n\n /**\n * Create an instance of this class.\n *\n * @param {Player} player\n * the player that this component should attach to\n *\n * @param {Object} [options]\n * Object of option names and values\n *\n */\n function Menu(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n\n if (options) {\n _this.menuButton_ = options.menuButton;\n }\n\n _this.focusedChild_ = -1;\n\n _this.on('keydown', function (e) {\n return _this.handleKeyDown(e);\n }); // All the menu item instances share the same blur handler provided by the menu container.\n\n\n _this.boundHandleBlur_ = function (e) {\n return _this.handleBlur(e);\n };\n\n _this.boundHandleTapClick_ = function (e) {\n return _this.handleTapClick(e);\n };\n\n return _this;\n }\n /**\n * Add event listeners to the {@link MenuItem}.\n *\n * @param {Object} component\n * The instance of the `MenuItem` to add listeners to.\n *\n */\n\n\n var _proto = Menu.prototype;\n\n _proto.addEventListenerForItem = function addEventListenerForItem(component) {\n if (!(component instanceof Component$1)) {\n return;\n }\n\n this.on(component, 'blur', this.boundHandleBlur_);\n this.on(component, ['tap', 'click'], this.boundHandleTapClick_);\n }\n /**\n * Remove event listeners from the {@link MenuItem}.\n *\n * @param {Object} component\n * The instance of the `MenuItem` to remove listeners.\n *\n */\n ;\n\n _proto.removeEventListenerForItem = function removeEventListenerForItem(component) {\n if (!(component instanceof Component$1)) {\n return;\n }\n\n this.off(component, 'blur', this.boundHandleBlur_);\n this.off(component, ['tap', 'click'], this.boundHandleTapClick_);\n }\n /**\n * This method will be called indirectly when the component has been added\n * before the component adds to the new menu instance by `addItem`.\n * In this case, the original menu instance will remove the component\n * by calling `removeChild`.\n *\n * @param {Object} component\n * The instance of the `MenuItem`\n */\n ;\n\n _proto.removeChild = function removeChild(component) {\n if (typeof component === 'string') {\n component = this.getChild(component);\n }\n\n this.removeEventListenerForItem(component);\n\n _Component.prototype.removeChild.call(this, component);\n }\n /**\n * Add a {@link MenuItem} to the menu.\n *\n * @param {Object|string} component\n * The name or instance of the `MenuItem` to add.\n *\n */\n ;\n\n _proto.addItem = function addItem(component) {\n var childComponent = this.addChild(component);\n\n if (childComponent) {\n this.addEventListenerForItem(childComponent);\n }\n }\n /**\n * Create the `Menu`s DOM element.\n *\n * @return {Element}\n * the element that was created\n */\n ;\n\n _proto.createEl = function createEl$1() {\n var contentElType = this.options_.contentElType || 'ul';\n this.contentEl_ = createEl(contentElType, {\n className: 'vjs-menu-content'\n });\n this.contentEl_.setAttribute('role', 'menu');\n\n var el = _Component.prototype.createEl.call(this, 'div', {\n append: this.contentEl_,\n className: 'vjs-menu'\n });\n\n el.appendChild(this.contentEl_); // Prevent clicks from bubbling up. Needed for Menu Buttons,\n // where a click on the parent is significant\n\n on(el, 'click', function (event) {\n event.preventDefault();\n event.stopImmediatePropagation();\n });\n return el;\n };\n\n _proto.dispose = function dispose() {\n this.contentEl_ = null;\n this.boundHandleBlur_ = null;\n this.boundHandleTapClick_ = null;\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Called when a `MenuItem` loses focus.\n *\n * @param {EventTarget~Event} event\n * The `blur` event that caused this function to be called.\n *\n * @listens blur\n */\n ;\n\n _proto.handleBlur = function handleBlur(event) {\n var relatedTarget = event.relatedTarget || document.activeElement; // Close menu popup when a user clicks outside the menu\n\n if (!this.children().some(function (element) {\n return element.el() === relatedTarget;\n })) {\n var btn = this.menuButton_;\n\n if (btn && btn.buttonPressed_ && relatedTarget !== btn.el().firstChild) {\n btn.unpressButton();\n }\n }\n }\n /**\n * Called when a `MenuItem` gets clicked or tapped.\n *\n * @param {EventTarget~Event} event\n * The `click` or `tap` event that caused this function to be called.\n *\n * @listens click,tap\n */\n ;\n\n _proto.handleTapClick = function handleTapClick(event) {\n // Unpress the associated MenuButton, and move focus back to it\n if (this.menuButton_) {\n this.menuButton_.unpressButton();\n var childComponents = this.children();\n\n if (!Array.isArray(childComponents)) {\n return;\n }\n\n var foundComponent = childComponents.filter(function (component) {\n return component.el() === event.target;\n })[0];\n\n if (!foundComponent) {\n return;\n } // don't focus menu button if item is a caption settings item\n // because focus will move elsewhere\n\n\n if (foundComponent.name() !== 'CaptionSettingsMenuItem') {\n this.menuButton_.focus();\n }\n }\n }\n /**\n * Handle a `keydown` event on this menu. This listener is added in the constructor.\n *\n * @param {EventTarget~Event} event\n * A `keydown` event that happened on the menu.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n // Left and Down Arrows\n if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {\n event.preventDefault();\n event.stopPropagation();\n this.stepForward(); // Up and Right Arrows\n } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {\n event.preventDefault();\n event.stopPropagation();\n this.stepBack();\n }\n }\n /**\n * Move to next (lower) menu item for keyboard users.\n */\n ;\n\n _proto.stepForward = function stepForward() {\n var stepChild = 0;\n\n if (this.focusedChild_ !== undefined) {\n stepChild = this.focusedChild_ + 1;\n }\n\n this.focus(stepChild);\n }\n /**\n * Move to previous (higher) menu item for keyboard users.\n */\n ;\n\n _proto.stepBack = function stepBack() {\n var stepChild = 0;\n\n if (this.focusedChild_ !== undefined) {\n stepChild = this.focusedChild_ - 1;\n }\n\n this.focus(stepChild);\n }\n /**\n * Set focus on a {@link MenuItem} in the `Menu`.\n *\n * @param {Object|string} [item=0]\n * Index of child item set focus on.\n */\n ;\n\n _proto.focus = function focus(item) {\n if (item === void 0) {\n item = 0;\n }\n\n var children = this.children().slice();\n var haveTitle = children.length && children[0].hasClass('vjs-menu-title');\n\n if (haveTitle) {\n children.shift();\n }\n\n if (children.length > 0) {\n if (item < 0) {\n item = 0;\n } else if (item >= children.length) {\n item = children.length - 1;\n }\n\n this.focusedChild_ = item;\n children[item].el_.focus();\n }\n };\n\n return Menu;\n}(Component$1);\n\nComponent$1.registerComponent('Menu', Menu);\n\n/**\n * A `MenuButton` class for any popup {@link Menu}.\n *\n * @extends Component\n */\n\nvar MenuButton = /*#__PURE__*/function (_Component) {\n _inheritsLoose(MenuButton, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options={}]\n * The key/value store of player options.\n */\n function MenuButton(player, options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _Component.call(this, player, options) || this;\n _this.menuButton_ = new Button(player, options);\n\n _this.menuButton_.controlText(_this.controlText_);\n\n _this.menuButton_.el_.setAttribute('aria-haspopup', 'true'); // Add buildCSSClass values to the button, not the wrapper\n\n\n var buttonClass = Button.prototype.buildCSSClass();\n _this.menuButton_.el_.className = _this.buildCSSClass() + ' ' + buttonClass;\n\n _this.menuButton_.removeClass('vjs-control');\n\n _this.addChild(_this.menuButton_);\n\n _this.update();\n\n _this.enabled_ = true;\n\n var handleClick = function handleClick(e) {\n return _this.handleClick(e);\n };\n\n _this.handleMenuKeyUp_ = function (e) {\n return _this.handleMenuKeyUp(e);\n };\n\n _this.on(_this.menuButton_, 'tap', handleClick);\n\n _this.on(_this.menuButton_, 'click', handleClick);\n\n _this.on(_this.menuButton_, 'keydown', function (e) {\n return _this.handleKeyDown(e);\n });\n\n _this.on(_this.menuButton_, 'mouseenter', function () {\n _this.addClass('vjs-hover');\n\n _this.menu.show();\n\n on(document, 'keyup', _this.handleMenuKeyUp_);\n });\n\n _this.on('mouseleave', function (e) {\n return _this.handleMouseLeave(e);\n });\n\n _this.on('keydown', function (e) {\n return _this.handleSubmenuKeyDown(e);\n });\n\n return _this;\n }\n /**\n * Update the menu based on the current state of its items.\n */\n\n\n var _proto = MenuButton.prototype;\n\n _proto.update = function update() {\n var menu = this.createMenu();\n\n if (this.menu) {\n this.menu.dispose();\n this.removeChild(this.menu);\n }\n\n this.menu = menu;\n this.addChild(menu);\n /**\n * Track the state of the menu button\n *\n * @type {Boolean}\n * @private\n */\n\n this.buttonPressed_ = false;\n this.menuButton_.el_.setAttribute('aria-expanded', 'false');\n\n if (this.items && this.items.length <= this.hideThreshold_) {\n this.hide();\n this.menu.contentEl_.removeAttribute('role');\n } else {\n this.show();\n this.menu.contentEl_.setAttribute('role', 'menu');\n }\n }\n /**\n * Create the menu and add all items to it.\n *\n * @return {Menu}\n * The constructed menu\n */\n ;\n\n _proto.createMenu = function createMenu() {\n var menu = new Menu(this.player_, {\n menuButton: this\n });\n /**\n * Hide the menu if the number of items is less than or equal to this threshold. This defaults\n * to 0 and whenever we add items which can be hidden to the menu we'll increment it. We list\n * it here because every time we run `createMenu` we need to reset the value.\n *\n * @protected\n * @type {Number}\n */\n\n this.hideThreshold_ = 0; // Add a title list item to the top\n\n if (this.options_.title) {\n var titleEl = createEl('li', {\n className: 'vjs-menu-title',\n textContent: toTitleCase$1(this.options_.title),\n tabIndex: -1\n });\n var titleComponent = new Component$1(this.player_, {\n el: titleEl\n });\n menu.addItem(titleComponent);\n }\n\n this.items = this.createItems();\n\n if (this.items) {\n // Add menu items to the menu\n for (var i = 0; i < this.items.length; i++) {\n menu.addItem(this.items[i]);\n }\n }\n\n return menu;\n }\n /**\n * Create the list of menu items. Specific to each subclass.\n *\n * @abstract\n */\n ;\n\n _proto.createItems = function createItems() {}\n /**\n * Create the `MenuButtons`s DOM element.\n *\n * @return {Element}\n * The element that gets created.\n */\n ;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: this.buildWrapperCSSClass()\n }, {});\n }\n /**\n * Allow sub components to stack CSS class names for the wrapper element\n *\n * @return {string}\n * The constructed wrapper DOM `className`\n */\n ;\n\n _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n var menuButtonClass = 'vjs-menu-button'; // If the inline option is passed, we want to use different styles altogether.\n\n if (this.options_.inline === true) {\n menuButtonClass += '-inline';\n } else {\n menuButtonClass += '-popup';\n } // TODO: Fix the CSS so that this isn't necessary\n\n\n var buttonClass = Button.prototype.buildCSSClass();\n return \"vjs-menu-button \" + menuButtonClass + \" \" + buttonClass + \" \" + _Component.prototype.buildCSSClass.call(this);\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n ;\n\n _proto.buildCSSClass = function buildCSSClass() {\n var menuButtonClass = 'vjs-menu-button'; // If the inline option is passed, we want to use different styles altogether.\n\n if (this.options_.inline === true) {\n menuButtonClass += '-inline';\n } else {\n menuButtonClass += '-popup';\n }\n\n return \"vjs-menu-button \" + menuButtonClass + \" \" + _Component.prototype.buildCSSClass.call(this);\n }\n /**\n * Get or set the localized control text that will be used for accessibility.\n *\n * > NOTE: This will come from the internal `menuButton_` element.\n *\n * @param {string} [text]\n * Control text for element.\n *\n * @param {Element} [el=this.menuButton_.el()]\n * Element to set the title on.\n *\n * @return {string}\n * - The control text when getting\n */\n ;\n\n _proto.controlText = function controlText(text, el) {\n if (el === void 0) {\n el = this.menuButton_.el();\n }\n\n return this.menuButton_.controlText(text, el);\n }\n /**\n * Dispose of the `menu-button` and all child components.\n */\n ;\n\n _proto.dispose = function dispose() {\n this.handleMouseLeave();\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Handle a click on a `MenuButton`.\n * See {@link ClickableComponent#handleClick} for instances where this is called.\n *\n * @param {EventTarget~Event} event\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n if (this.buttonPressed_) {\n this.unpressButton();\n } else {\n this.pressButton();\n }\n }\n /**\n * Handle `mouseleave` for `MenuButton`.\n *\n * @param {EventTarget~Event} event\n * The `mouseleave` event that caused this function to be called.\n *\n * @listens mouseleave\n */\n ;\n\n _proto.handleMouseLeave = function handleMouseLeave(event) {\n this.removeClass('vjs-hover');\n off(document, 'keyup', this.handleMenuKeyUp_);\n }\n /**\n * Set the focus to the actual button, not to this element\n */\n ;\n\n _proto.focus = function focus() {\n this.menuButton_.focus();\n }\n /**\n * Remove the focus from the actual button, not this element\n */\n ;\n\n _proto.blur = function blur() {\n this.menuButton_.blur();\n }\n /**\n * Handle tab, escape, down arrow, and up arrow keys for `MenuButton`. See\n * {@link ClickableComponent#handleKeyDown} for instances where this is called.\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n // Escape or Tab unpress the 'button'\n if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n if (this.buttonPressed_) {\n this.unpressButton();\n } // Don't preventDefault for Tab key - we still want to lose focus\n\n\n if (!keycode.isEventKey(event, 'Tab')) {\n event.preventDefault(); // Set focus back to the menu button's button\n\n this.menuButton_.focus();\n } // Up Arrow or Down Arrow also 'press' the button to open the menu\n\n } else if (keycode.isEventKey(event, 'Up') || keycode.isEventKey(event, 'Down')) {\n if (!this.buttonPressed_) {\n event.preventDefault();\n this.pressButton();\n }\n }\n }\n /**\n * Handle a `keyup` event on a `MenuButton`. The listener for this is added in\n * the constructor.\n *\n * @param {EventTarget~Event} event\n * Key press event\n *\n * @listens keyup\n */\n ;\n\n _proto.handleMenuKeyUp = function handleMenuKeyUp(event) {\n // Escape hides popup menu\n if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n this.removeClass('vjs-hover');\n }\n }\n /**\n * This method name now delegates to `handleSubmenuKeyDown`. This means\n * anyone calling `handleSubmenuKeyPress` will not see their method calls\n * stop working.\n *\n * @param {EventTarget~Event} event\n * The event that caused this function to be called.\n */\n ;\n\n _proto.handleSubmenuKeyPress = function handleSubmenuKeyPress(event) {\n this.handleSubmenuKeyDown(event);\n }\n /**\n * Handle a `keydown` event on a sub-menu. The listener for this is added in\n * the constructor.\n *\n * @param {EventTarget~Event} event\n * Key press event\n *\n * @listens keydown\n */\n ;\n\n _proto.handleSubmenuKeyDown = function handleSubmenuKeyDown(event) {\n // Escape or Tab unpress the 'button'\n if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n if (this.buttonPressed_) {\n this.unpressButton();\n } // Don't preventDefault for Tab key - we still want to lose focus\n\n\n if (!keycode.isEventKey(event, 'Tab')) {\n event.preventDefault(); // Set focus back to the menu button's button\n\n this.menuButton_.focus();\n }\n }\n }\n /**\n * Put the current `MenuButton` into a pressed state.\n */\n ;\n\n _proto.pressButton = function pressButton() {\n if (this.enabled_) {\n this.buttonPressed_ = true;\n this.menu.show();\n this.menu.lockShowing();\n this.menuButton_.el_.setAttribute('aria-expanded', 'true'); // set the focus into the submenu, except on iOS where it is resulting in\n // undesired scrolling behavior when the player is in an iframe\n\n if (IS_IOS && isInFrame()) {\n // Return early so that the menu isn't focused\n return;\n }\n\n this.menu.focus();\n }\n }\n /**\n * Take the current `MenuButton` out of a pressed state.\n */\n ;\n\n _proto.unpressButton = function unpressButton() {\n if (this.enabled_) {\n this.buttonPressed_ = false;\n this.menu.unlockShowing();\n this.menu.hide();\n this.menuButton_.el_.setAttribute('aria-expanded', 'false');\n }\n }\n /**\n * Disable the `MenuButton`. Don't allow it to be clicked.\n */\n ;\n\n _proto.disable = function disable() {\n this.unpressButton();\n this.enabled_ = false;\n this.addClass('vjs-disabled');\n this.menuButton_.disable();\n }\n /**\n * Enable the `MenuButton`. Allow it to be clicked.\n */\n ;\n\n _proto.enable = function enable() {\n this.enabled_ = true;\n this.removeClass('vjs-disabled');\n this.menuButton_.enable();\n };\n\n return MenuButton;\n}(Component$1);\n\nComponent$1.registerComponent('MenuButton', MenuButton);\n\n/**\n * The base class for buttons that toggle specific track types (e.g. subtitles).\n *\n * @extends MenuButton\n */\n\nvar TrackButton = /*#__PURE__*/function (_MenuButton) {\n _inheritsLoose(TrackButton, _MenuButton);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function TrackButton(player, options) {\n var _this;\n\n var tracks = options.tracks;\n _this = _MenuButton.call(this, player, options) || this;\n\n if (_this.items.length <= 1) {\n _this.hide();\n }\n\n if (!tracks) {\n return _assertThisInitialized(_this);\n }\n\n var updateHandler = bind(_assertThisInitialized(_this), _this.update);\n tracks.addEventListener('removetrack', updateHandler);\n tracks.addEventListener('addtrack', updateHandler);\n tracks.addEventListener('labelchange', updateHandler);\n\n _this.player_.on('ready', updateHandler);\n\n _this.player_.on('dispose', function () {\n tracks.removeEventListener('removetrack', updateHandler);\n tracks.removeEventListener('addtrack', updateHandler);\n tracks.removeEventListener('labelchange', updateHandler);\n });\n\n return _this;\n }\n\n return TrackButton;\n}(MenuButton);\n\nComponent$1.registerComponent('TrackButton', TrackButton);\n\n/**\n * @file menu-keys.js\n */\n\n/**\n * All keys used for operation of a menu (`MenuButton`, `Menu`, and `MenuItem`)\n * Note that 'Enter' and 'Space' are not included here (otherwise they would\n * prevent the `MenuButton` and `MenuItem` from being keyboard-clickable)\n * @typedef MenuKeys\n * @array\n */\nvar MenuKeys = ['Tab', 'Esc', 'Up', 'Down', 'Right', 'Left'];\n\n/**\n * The component for a menu item. ``\n *\n * @extends ClickableComponent\n */\n\nvar MenuItem = /*#__PURE__*/function (_ClickableComponent) {\n _inheritsLoose(MenuItem, _ClickableComponent);\n\n /**\n * Creates an instance of the this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options={}]\n * The key/value store of player options.\n *\n */\n function MenuItem(player, options) {\n var _this;\n\n _this = _ClickableComponent.call(this, player, options) || this;\n _this.selectable = options.selectable;\n _this.isSelected_ = options.selected || false;\n _this.multiSelectable = options.multiSelectable;\n\n _this.selected(_this.isSelected_);\n\n if (_this.selectable) {\n if (_this.multiSelectable) {\n _this.el_.setAttribute('role', 'menuitemcheckbox');\n } else {\n _this.el_.setAttribute('role', 'menuitemradio');\n }\n } else {\n _this.el_.setAttribute('role', 'menuitem');\n }\n\n return _this;\n }\n /**\n * Create the `MenuItem's DOM element\n *\n * @param {string} [type=li]\n * Element's node type, not actually used, always set to `li`.\n *\n * @param {Object} [props={}]\n * An object of properties that should be set on the element\n *\n * @param {Object} [attrs={}]\n * An object of attributes that should be set on the element\n *\n * @return {Element}\n * The element that gets created.\n */\n\n\n var _proto = MenuItem.prototype;\n\n _proto.createEl = function createEl$1(type, props, attrs) {\n // The control is textual, not just an icon\n this.nonIconControl = true;\n\n var el = _ClickableComponent.prototype.createEl.call(this, 'li', assign({\n className: 'vjs-menu-item',\n tabIndex: -1\n }, props), attrs); // swap icon with menu item text.\n\n\n el.replaceChild(createEl('span', {\n className: 'vjs-menu-item-text',\n textContent: this.localize(this.options_.label)\n }), el.querySelector('.vjs-icon-placeholder'));\n return el;\n }\n /**\n * Ignore keys which are used by the menu, but pass any other ones up. See\n * {@link ClickableComponent#handleKeyDown} for instances where this is called.\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n if (!MenuKeys.some(function (key) {\n return keycode.isEventKey(event, key);\n })) {\n // Pass keydown handling up for unused keys\n _ClickableComponent.prototype.handleKeyDown.call(this, event);\n }\n }\n /**\n * Any click on a `MenuItem` puts it into the selected state.\n * See {@link ClickableComponent#handleClick} for instances where this is called.\n *\n * @param {EventTarget~Event} event\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n this.selected(true);\n }\n /**\n * Set the state for this menu item as selected or not.\n *\n * @param {boolean} selected\n * if the menu item is selected or not\n */\n ;\n\n _proto.selected = function selected(_selected) {\n if (this.selectable) {\n if (_selected) {\n this.addClass('vjs-selected');\n this.el_.setAttribute('aria-checked', 'true'); // aria-checked isn't fully supported by browsers/screen readers,\n // so indicate selected state to screen reader in the control text.\n\n this.controlText(', selected');\n this.isSelected_ = true;\n } else {\n this.removeClass('vjs-selected');\n this.el_.setAttribute('aria-checked', 'false'); // Indicate un-selected state to screen reader\n\n this.controlText('');\n this.isSelected_ = false;\n }\n }\n };\n\n return MenuItem;\n}(ClickableComponent);\n\nComponent$1.registerComponent('MenuItem', MenuItem);\n\n/**\n * The specific menu item type for selecting a language within a text track kind\n *\n * @extends MenuItem\n */\n\nvar TextTrackMenuItem = /*#__PURE__*/function (_MenuItem) {\n _inheritsLoose(TextTrackMenuItem, _MenuItem);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function TextTrackMenuItem(player, options) {\n var _this;\n\n var track = options.track;\n var tracks = player.textTracks(); // Modify options for parent MenuItem class's init.\n\n options.label = track.label || track.language || 'Unknown';\n options.selected = track.mode === 'showing';\n _this = _MenuItem.call(this, player, options) || this;\n _this.track = track; // Determine the relevant kind(s) of tracks for this component and filter\n // out empty kinds.\n\n _this.kinds = (options.kinds || [options.kind || _this.track.kind]).filter(Boolean);\n\n var changeHandler = function changeHandler() {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n _this.handleTracksChange.apply(_assertThisInitialized(_this), args);\n };\n\n var selectedLanguageChangeHandler = function selectedLanguageChangeHandler() {\n for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n args[_key2] = arguments[_key2];\n }\n\n _this.handleSelectedLanguageChange.apply(_assertThisInitialized(_this), args);\n };\n\n player.on(['loadstart', 'texttrackchange'], changeHandler);\n tracks.addEventListener('change', changeHandler);\n tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler);\n\n _this.on('dispose', function () {\n player.off(['loadstart', 'texttrackchange'], changeHandler);\n tracks.removeEventListener('change', changeHandler);\n tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler);\n }); // iOS7 doesn't dispatch change events to TextTrackLists when an\n // associated track's mode changes. Without something like\n // Object.observe() (also not present on iOS7), it's not\n // possible to detect changes to the mode attribute and polyfill\n // the change event. As a poor substitute, we manually dispatch\n // change events whenever the controls modify the mode.\n\n\n if (tracks.onchange === undefined) {\n var event;\n\n _this.on(['tap', 'click'], function () {\n if (typeof window$1.Event !== 'object') {\n // Android 2.3 throws an Illegal Constructor error for window.Event\n try {\n event = new window$1.Event('change');\n } catch (err) {// continue regardless of error\n }\n }\n\n if (!event) {\n event = document.createEvent('Event');\n event.initEvent('change', true, true);\n }\n\n tracks.dispatchEvent(event);\n });\n } // set the default state based on current tracks\n\n\n _this.handleTracksChange();\n\n return _this;\n }\n /**\n * This gets called when an `TextTrackMenuItem` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} event\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n\n\n var _proto = TextTrackMenuItem.prototype;\n\n _proto.handleClick = function handleClick(event) {\n var referenceTrack = this.track;\n var tracks = this.player_.textTracks();\n\n _MenuItem.prototype.handleClick.call(this, event);\n\n if (!tracks) {\n return;\n }\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i]; // If the track from the text tracks list is not of the right kind,\n // skip it. We do not want to affect tracks of incompatible kind(s).\n\n if (this.kinds.indexOf(track.kind) === -1) {\n continue;\n } // If this text track is the component's track and it is not showing,\n // set it to showing.\n\n\n if (track === referenceTrack) {\n if (track.mode !== 'showing') {\n track.mode = 'showing';\n } // If this text track is not the component's track and it is not\n // disabled, set it to disabled.\n\n } else if (track.mode !== 'disabled') {\n track.mode = 'disabled';\n }\n }\n }\n /**\n * Handle text track list change\n *\n * @param {EventTarget~Event} event\n * The `change` event that caused this function to be called.\n *\n * @listens TextTrackList#change\n */\n ;\n\n _proto.handleTracksChange = function handleTracksChange(event) {\n var shouldBeSelected = this.track.mode === 'showing'; // Prevent redundant selected() calls because they may cause\n // screen readers to read the appended control text unnecessarily\n\n if (shouldBeSelected !== this.isSelected_) {\n this.selected(shouldBeSelected);\n }\n };\n\n _proto.handleSelectedLanguageChange = function handleSelectedLanguageChange(event) {\n if (this.track.mode === 'showing') {\n var selectedLanguage = this.player_.cache_.selectedLanguage; // Don't replace the kind of track across the same language\n\n if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) {\n return;\n }\n\n this.player_.cache_.selectedLanguage = {\n enabled: true,\n language: this.track.language,\n kind: this.track.kind\n };\n }\n };\n\n _proto.dispose = function dispose() {\n // remove reference to track object on dispose\n this.track = null;\n\n _MenuItem.prototype.dispose.call(this);\n };\n\n return TextTrackMenuItem;\n}(MenuItem);\n\nComponent$1.registerComponent('TextTrackMenuItem', TextTrackMenuItem);\n\n/**\n * A special menu item for turning of a specific type of text track\n *\n * @extends TextTrackMenuItem\n */\n\nvar OffTextTrackMenuItem = /*#__PURE__*/function (_TextTrackMenuItem) {\n _inheritsLoose(OffTextTrackMenuItem, _TextTrackMenuItem);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function OffTextTrackMenuItem(player, options) {\n // Create pseudo track info\n // Requires options['kind']\n options.track = {\n player: player,\n // it is no longer necessary to store `kind` or `kinds` on the track itself\n // since they are now stored in the `kinds` property of all instances of\n // TextTrackMenuItem, but this will remain for backwards compatibility\n kind: options.kind,\n kinds: options.kinds,\n \"default\": false,\n mode: 'disabled'\n };\n\n if (!options.kinds) {\n options.kinds = [options.kind];\n }\n\n if (options.label) {\n options.track.label = options.label;\n } else {\n options.track.label = options.kinds.join(' and ') + ' off';\n } // MenuItem is selectable\n\n\n options.selectable = true; // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n\n options.multiSelectable = false;\n return _TextTrackMenuItem.call(this, player, options) || this;\n }\n /**\n * Handle text track change\n *\n * @param {EventTarget~Event} event\n * The event that caused this function to run\n */\n\n\n var _proto = OffTextTrackMenuItem.prototype;\n\n _proto.handleTracksChange = function handleTracksChange(event) {\n var tracks = this.player().textTracks();\n var shouldBeSelected = true;\n\n for (var i = 0, l = tracks.length; i < l; i++) {\n var track = tracks[i];\n\n if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') {\n shouldBeSelected = false;\n break;\n }\n } // Prevent redundant selected() calls because they may cause\n // screen readers to read the appended control text unnecessarily\n\n\n if (shouldBeSelected !== this.isSelected_) {\n this.selected(shouldBeSelected);\n }\n };\n\n _proto.handleSelectedLanguageChange = function handleSelectedLanguageChange(event) {\n var tracks = this.player().textTracks();\n var allHidden = true;\n\n for (var i = 0, l = tracks.length; i < l; i++) {\n var track = tracks[i];\n\n if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') {\n allHidden = false;\n break;\n }\n }\n\n if (allHidden) {\n this.player_.cache_.selectedLanguage = {\n enabled: false\n };\n }\n };\n\n return OffTextTrackMenuItem;\n}(TextTrackMenuItem);\n\nComponent$1.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem);\n\n/**\n * The base class for buttons that toggle specific text track types (e.g. subtitles)\n *\n * @extends MenuButton\n */\n\nvar TextTrackButton = /*#__PURE__*/function (_TrackButton) {\n _inheritsLoose(TextTrackButton, _TrackButton);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options={}]\n * The key/value store of player options.\n */\n function TextTrackButton(player, options) {\n if (options === void 0) {\n options = {};\n }\n\n options.tracks = player.textTracks();\n return _TrackButton.call(this, player, options) || this;\n }\n /**\n * Create a menu item for each text track\n *\n * @param {TextTrackMenuItem[]} [items=[]]\n * Existing array of items to use during creation\n *\n * @return {TextTrackMenuItem[]}\n * Array of menu items that were created\n */\n\n\n var _proto = TextTrackButton.prototype;\n\n _proto.createItems = function createItems(items, TrackMenuItem) {\n if (items === void 0) {\n items = [];\n }\n\n if (TrackMenuItem === void 0) {\n TrackMenuItem = TextTrackMenuItem;\n }\n\n // Label is an override for the [track] off label\n // USed to localise captions/subtitles\n var label;\n\n if (this.label_) {\n label = this.label_ + \" off\";\n } // Add an OFF menu item to turn all tracks off\n\n\n items.push(new OffTextTrackMenuItem(this.player_, {\n kinds: this.kinds_,\n kind: this.kind_,\n label: label\n }));\n this.hideThreshold_ += 1;\n var tracks = this.player_.textTracks();\n\n if (!Array.isArray(this.kinds_)) {\n this.kinds_ = [this.kind_];\n }\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i]; // only add tracks that are of an appropriate kind and have a label\n\n if (this.kinds_.indexOf(track.kind) > -1) {\n var item = new TrackMenuItem(this.player_, {\n track: track,\n kinds: this.kinds_,\n kind: this.kind_,\n // MenuItem is selectable\n selectable: true,\n // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n multiSelectable: false\n });\n item.addClass(\"vjs-\" + track.kind + \"-menu-item\");\n items.push(item);\n }\n }\n\n return items;\n };\n\n return TextTrackButton;\n}(TrackButton);\n\nComponent$1.registerComponent('TextTrackButton', TextTrackButton);\n\n/**\n * The chapter track menu item\n *\n * @extends MenuItem\n */\n\nvar ChaptersTrackMenuItem = /*#__PURE__*/function (_MenuItem) {\n _inheritsLoose(ChaptersTrackMenuItem, _MenuItem);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function ChaptersTrackMenuItem(player, options) {\n var _this;\n\n var track = options.track;\n var cue = options.cue;\n var currentTime = player.currentTime(); // Modify options for parent MenuItem class's init.\n\n options.selectable = true;\n options.multiSelectable = false;\n options.label = cue.text;\n options.selected = cue.startTime <= currentTime && currentTime < cue.endTime;\n _this = _MenuItem.call(this, player, options) || this;\n _this.track = track;\n _this.cue = cue;\n return _this;\n }\n /**\n * This gets called when an `ChaptersTrackMenuItem` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n\n\n var _proto = ChaptersTrackMenuItem.prototype;\n\n _proto.handleClick = function handleClick(event) {\n _MenuItem.prototype.handleClick.call(this);\n\n this.player_.currentTime(this.cue.startTime);\n };\n\n return ChaptersTrackMenuItem;\n}(MenuItem);\n\nComponent$1.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem);\n\n/**\n * The button component for toggling and selecting chapters\n * Chapters act much differently than other text tracks\n * Cues are navigation vs. other tracks of alternative languages\n *\n * @extends TextTrackButton\n */\n\nvar ChaptersButton = /*#__PURE__*/function (_TextTrackButton) {\n _inheritsLoose(ChaptersButton, _TextTrackButton);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} [ready]\n * The function to call when this function is ready.\n */\n function ChaptersButton(player, options, ready) {\n var _this;\n\n _this = _TextTrackButton.call(this, player, options, ready) || this;\n\n _this.selectCurrentItem_ = function () {\n _this.items.forEach(function (item) {\n item.selected(_this.track_.activeCues[0] === item.cue);\n });\n };\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = ChaptersButton.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-chapters-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n };\n\n _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n return \"vjs-chapters-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n }\n /**\n * Update the menu based on the current state of its items.\n *\n * @param {EventTarget~Event} [event]\n * An event that triggered this function to run.\n *\n * @listens TextTrackList#addtrack\n * @listens TextTrackList#removetrack\n * @listens TextTrackList#change\n */\n ;\n\n _proto.update = function update(event) {\n if (event && event.track && event.track.kind !== 'chapters') {\n return;\n }\n\n var track = this.findChaptersTrack();\n\n if (track !== this.track_) {\n this.setTrack(track);\n\n _TextTrackButton.prototype.update.call(this);\n } else if (!this.items || track && track.cues && track.cues.length !== this.items.length) {\n // Update the menu initially or if the number of cues has changed since set\n _TextTrackButton.prototype.update.call(this);\n }\n }\n /**\n * Set the currently selected track for the chapters button.\n *\n * @param {TextTrack} track\n * The new track to select. Nothing will change if this is the currently selected\n * track.\n */\n ;\n\n _proto.setTrack = function setTrack(track) {\n if (this.track_ === track) {\n return;\n }\n\n if (!this.updateHandler_) {\n this.updateHandler_ = this.update.bind(this);\n } // here this.track_ refers to the old track instance\n\n\n if (this.track_) {\n var remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);\n\n if (remoteTextTrackEl) {\n remoteTextTrackEl.removeEventListener('load', this.updateHandler_);\n }\n\n this.track_.removeEventListener('cuechange', this.selectCurrentItem_);\n this.track_ = null;\n }\n\n this.track_ = track; // here this.track_ refers to the new track instance\n\n if (this.track_) {\n this.track_.mode = 'hidden';\n\n var _remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);\n\n if (_remoteTextTrackEl) {\n _remoteTextTrackEl.addEventListener('load', this.updateHandler_);\n }\n\n this.track_.addEventListener('cuechange', this.selectCurrentItem_);\n }\n }\n /**\n * Find the track object that is currently in use by this ChaptersButton\n *\n * @return {TextTrack|undefined}\n * The current track or undefined if none was found.\n */\n ;\n\n _proto.findChaptersTrack = function findChaptersTrack() {\n var tracks = this.player_.textTracks() || [];\n\n for (var i = tracks.length - 1; i >= 0; i--) {\n // We will always choose the last track as our chaptersTrack\n var track = tracks[i];\n\n if (track.kind === this.kind_) {\n return track;\n }\n }\n }\n /**\n * Get the caption for the ChaptersButton based on the track label. This will also\n * use the current tracks localized kind as a fallback if a label does not exist.\n *\n * @return {string}\n * The tracks current label or the localized track kind.\n */\n ;\n\n _proto.getMenuCaption = function getMenuCaption() {\n if (this.track_ && this.track_.label) {\n return this.track_.label;\n }\n\n return this.localize(toTitleCase$1(this.kind_));\n }\n /**\n * Create menu from chapter track\n *\n * @return {Menu}\n * New menu for the chapter buttons\n */\n ;\n\n _proto.createMenu = function createMenu() {\n this.options_.title = this.getMenuCaption();\n return _TextTrackButton.prototype.createMenu.call(this);\n }\n /**\n * Create a menu item for each text track\n *\n * @return {TextTrackMenuItem[]}\n * Array of menu items\n */\n ;\n\n _proto.createItems = function createItems() {\n var items = [];\n\n if (!this.track_) {\n return items;\n }\n\n var cues = this.track_.cues;\n\n if (!cues) {\n return items;\n }\n\n for (var i = 0, l = cues.length; i < l; i++) {\n var cue = cues[i];\n var mi = new ChaptersTrackMenuItem(this.player_, {\n track: this.track_,\n cue: cue\n });\n items.push(mi);\n }\n\n return items;\n };\n\n return ChaptersButton;\n}(TextTrackButton);\n/**\n * `kind` of TextTrack to look for to associate it with this menu.\n *\n * @type {string}\n * @private\n */\n\n\nChaptersButton.prototype.kind_ = 'chapters';\n/**\n * The text that should display over the `ChaptersButton`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\nChaptersButton.prototype.controlText_ = 'Chapters';\nComponent$1.registerComponent('ChaptersButton', ChaptersButton);\n\n/**\n * The button component for toggling and selecting descriptions\n *\n * @extends TextTrackButton\n */\n\nvar DescriptionsButton = /*#__PURE__*/function (_TextTrackButton) {\n _inheritsLoose(DescriptionsButton, _TextTrackButton);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} [ready]\n * The function to call when this component is ready.\n */\n function DescriptionsButton(player, options, ready) {\n var _this;\n\n _this = _TextTrackButton.call(this, player, options, ready) || this;\n var tracks = player.textTracks();\n var changeHandler = bind(_assertThisInitialized(_this), _this.handleTracksChange);\n tracks.addEventListener('change', changeHandler);\n\n _this.on('dispose', function () {\n tracks.removeEventListener('change', changeHandler);\n });\n\n return _this;\n }\n /**\n * Handle text track change\n *\n * @param {EventTarget~Event} event\n * The event that caused this function to run\n *\n * @listens TextTrackList#change\n */\n\n\n var _proto = DescriptionsButton.prototype;\n\n _proto.handleTracksChange = function handleTracksChange(event) {\n var tracks = this.player().textTracks();\n var disabled = false; // Check whether a track of a different kind is showing\n\n for (var i = 0, l = tracks.length; i < l; i++) {\n var track = tracks[i];\n\n if (track.kind !== this.kind_ && track.mode === 'showing') {\n disabled = true;\n break;\n }\n } // If another track is showing, disable this menu button\n\n\n if (disabled) {\n this.disable();\n } else {\n this.enable();\n }\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n ;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-descriptions-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n };\n\n _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n return \"vjs-descriptions-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n };\n\n return DescriptionsButton;\n}(TextTrackButton);\n/**\n * `kind` of TextTrack to look for to associate it with this menu.\n *\n * @type {string}\n * @private\n */\n\n\nDescriptionsButton.prototype.kind_ = 'descriptions';\n/**\n * The text that should display over the `DescriptionsButton`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\nDescriptionsButton.prototype.controlText_ = 'Descriptions';\nComponent$1.registerComponent('DescriptionsButton', DescriptionsButton);\n\n/**\n * The button component for toggling and selecting subtitles\n *\n * @extends TextTrackButton\n */\n\nvar SubtitlesButton = /*#__PURE__*/function (_TextTrackButton) {\n _inheritsLoose(SubtitlesButton, _TextTrackButton);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} [ready]\n * The function to call when this component is ready.\n */\n function SubtitlesButton(player, options, ready) {\n return _TextTrackButton.call(this, player, options, ready) || this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = SubtitlesButton.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-subtitles-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n };\n\n _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n return \"vjs-subtitles-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n };\n\n return SubtitlesButton;\n}(TextTrackButton);\n/**\n * `kind` of TextTrack to look for to associate it with this menu.\n *\n * @type {string}\n * @private\n */\n\n\nSubtitlesButton.prototype.kind_ = 'subtitles';\n/**\n * The text that should display over the `SubtitlesButton`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\nSubtitlesButton.prototype.controlText_ = 'Subtitles';\nComponent$1.registerComponent('SubtitlesButton', SubtitlesButton);\n\n/**\n * The menu item for caption track settings menu\n *\n * @extends TextTrackMenuItem\n */\n\nvar CaptionSettingsMenuItem = /*#__PURE__*/function (_TextTrackMenuItem) {\n _inheritsLoose(CaptionSettingsMenuItem, _TextTrackMenuItem);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function CaptionSettingsMenuItem(player, options) {\n var _this;\n\n options.track = {\n player: player,\n kind: options.kind,\n label: options.kind + ' settings',\n selectable: false,\n \"default\": false,\n mode: 'disabled'\n }; // CaptionSettingsMenuItem has no concept of 'selected'\n\n options.selectable = false;\n options.name = 'CaptionSettingsMenuItem';\n _this = _TextTrackMenuItem.call(this, player, options) || this;\n\n _this.addClass('vjs-texttrack-settings');\n\n _this.controlText(', opens ' + options.kind + ' settings dialog');\n\n return _this;\n }\n /**\n * This gets called when an `CaptionSettingsMenuItem` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n\n\n var _proto = CaptionSettingsMenuItem.prototype;\n\n _proto.handleClick = function handleClick(event) {\n this.player().getChild('textTrackSettings').open();\n };\n\n return CaptionSettingsMenuItem;\n}(TextTrackMenuItem);\n\nComponent$1.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem);\n\n/**\n * The button component for toggling and selecting captions\n *\n * @extends TextTrackButton\n */\n\nvar CaptionsButton = /*#__PURE__*/function (_TextTrackButton) {\n _inheritsLoose(CaptionsButton, _TextTrackButton);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} [ready]\n * The function to call when this component is ready.\n */\n function CaptionsButton(player, options, ready) {\n return _TextTrackButton.call(this, player, options, ready) || this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = CaptionsButton.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-captions-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n };\n\n _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n return \"vjs-captions-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n }\n /**\n * Create caption menu items\n *\n * @return {CaptionSettingsMenuItem[]}\n * The array of current menu items.\n */\n ;\n\n _proto.createItems = function createItems() {\n var items = [];\n\n if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {\n items.push(new CaptionSettingsMenuItem(this.player_, {\n kind: this.kind_\n }));\n this.hideThreshold_ += 1;\n }\n\n return _TextTrackButton.prototype.createItems.call(this, items);\n };\n\n return CaptionsButton;\n}(TextTrackButton);\n/**\n * `kind` of TextTrack to look for to associate it with this menu.\n *\n * @type {string}\n * @private\n */\n\n\nCaptionsButton.prototype.kind_ = 'captions';\n/**\n * The text that should display over the `CaptionsButton`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\nCaptionsButton.prototype.controlText_ = 'Captions';\nComponent$1.registerComponent('CaptionsButton', CaptionsButton);\n\n/**\n * SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles\n * in the SubsCapsMenu.\n *\n * @extends TextTrackMenuItem\n */\n\nvar SubsCapsMenuItem = /*#__PURE__*/function (_TextTrackMenuItem) {\n _inheritsLoose(SubsCapsMenuItem, _TextTrackMenuItem);\n\n function SubsCapsMenuItem() {\n return _TextTrackMenuItem.apply(this, arguments) || this;\n }\n\n var _proto = SubsCapsMenuItem.prototype;\n\n _proto.createEl = function createEl$1(type, props, attrs) {\n var el = _TextTrackMenuItem.prototype.createEl.call(this, type, props, attrs);\n\n var parentSpan = el.querySelector('.vjs-menu-item-text');\n\n if (this.options_.track.kind === 'captions') {\n parentSpan.appendChild(createEl('span', {\n className: 'vjs-icon-placeholder'\n }, {\n 'aria-hidden': true\n }));\n parentSpan.appendChild(createEl('span', {\n className: 'vjs-control-text',\n // space added as the text will visually flow with the\n // label\n textContent: \" \" + this.localize('Captions')\n }));\n }\n\n return el;\n };\n\n return SubsCapsMenuItem;\n}(TextTrackMenuItem);\n\nComponent$1.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem);\n\n/**\n * The button component for toggling and selecting captions and/or subtitles\n *\n * @extends TextTrackButton\n */\n\nvar SubsCapsButton = /*#__PURE__*/function (_TextTrackButton) {\n _inheritsLoose(SubsCapsButton, _TextTrackButton);\n\n function SubsCapsButton(player, options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _TextTrackButton.call(this, player, options) || this; // Although North America uses \"captions\" in most cases for\n // \"captions and subtitles\" other locales use \"subtitles\"\n\n _this.label_ = 'subtitles';\n\n if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(_this.player_.language_) > -1) {\n _this.label_ = 'captions';\n }\n\n _this.menuButton_.controlText(toTitleCase$1(_this.label_));\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = SubsCapsButton.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-subs-caps-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n };\n\n _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n return \"vjs-subs-caps-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n }\n /**\n * Create caption/subtitles menu items\n *\n * @return {CaptionSettingsMenuItem[]}\n * The array of current menu items.\n */\n ;\n\n _proto.createItems = function createItems() {\n var items = [];\n\n if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {\n items.push(new CaptionSettingsMenuItem(this.player_, {\n kind: this.label_\n }));\n this.hideThreshold_ += 1;\n }\n\n items = _TextTrackButton.prototype.createItems.call(this, items, SubsCapsMenuItem);\n return items;\n };\n\n return SubsCapsButton;\n}(TextTrackButton);\n/**\n * `kind`s of TextTrack to look for to associate it with this menu.\n *\n * @type {array}\n * @private\n */\n\n\nSubsCapsButton.prototype.kinds_ = ['captions', 'subtitles'];\n/**\n * The text that should display over the `SubsCapsButton`s controls.\n *\n *\n * @type {string}\n * @private\n */\n\nSubsCapsButton.prototype.controlText_ = 'Subtitles';\nComponent$1.registerComponent('SubsCapsButton', SubsCapsButton);\n\n/**\n * An {@link AudioTrack} {@link MenuItem}\n *\n * @extends MenuItem\n */\n\nvar AudioTrackMenuItem = /*#__PURE__*/function (_MenuItem) {\n _inheritsLoose(AudioTrackMenuItem, _MenuItem);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function AudioTrackMenuItem(player, options) {\n var _this;\n\n var track = options.track;\n var tracks = player.audioTracks(); // Modify options for parent MenuItem class's init.\n\n options.label = track.label || track.language || 'Unknown';\n options.selected = track.enabled;\n _this = _MenuItem.call(this, player, options) || this;\n _this.track = track;\n\n _this.addClass(\"vjs-\" + track.kind + \"-menu-item\");\n\n var changeHandler = function changeHandler() {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n _this.handleTracksChange.apply(_assertThisInitialized(_this), args);\n };\n\n tracks.addEventListener('change', changeHandler);\n\n _this.on('dispose', function () {\n tracks.removeEventListener('change', changeHandler);\n });\n\n return _this;\n }\n\n var _proto = AudioTrackMenuItem.prototype;\n\n _proto.createEl = function createEl$1(type, props, attrs) {\n var el = _MenuItem.prototype.createEl.call(this, type, props, attrs);\n\n var parentSpan = el.querySelector('.vjs-menu-item-text');\n\n if (this.options_.track.kind === 'main-desc') {\n parentSpan.appendChild(createEl('span', {\n className: 'vjs-icon-placeholder'\n }, {\n 'aria-hidden': true\n }));\n parentSpan.appendChild(createEl('span', {\n className: 'vjs-control-text',\n textContent: ' ' + this.localize('Descriptions')\n }));\n }\n\n return el;\n }\n /**\n * This gets called when an `AudioTrackMenuItem is \"clicked\". See {@link ClickableComponent}\n * for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n _MenuItem.prototype.handleClick.call(this, event); // the audio track list will automatically toggle other tracks\n // off for us.\n\n\n this.track.enabled = true; // when native audio tracks are used, we want to make sure that other tracks are turned off\n\n if (this.player_.tech_.featuresNativeAudioTracks) {\n var tracks = this.player_.audioTracks();\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i]; // skip the current track since we enabled it above\n\n if (track === this.track) {\n continue;\n }\n\n track.enabled = track === this.track;\n }\n }\n }\n /**\n * Handle any {@link AudioTrack} change.\n *\n * @param {EventTarget~Event} [event]\n * The {@link AudioTrackList#change} event that caused this to run.\n *\n * @listens AudioTrackList#change\n */\n ;\n\n _proto.handleTracksChange = function handleTracksChange(event) {\n this.selected(this.track.enabled);\n };\n\n return AudioTrackMenuItem;\n}(MenuItem);\n\nComponent$1.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem);\n\n/**\n * The base class for buttons that toggle specific {@link AudioTrack} types.\n *\n * @extends TrackButton\n */\n\nvar AudioTrackButton = /*#__PURE__*/function (_TrackButton) {\n _inheritsLoose(AudioTrackButton, _TrackButton);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options={}]\n * The key/value store of player options.\n */\n function AudioTrackButton(player, options) {\n if (options === void 0) {\n options = {};\n }\n\n options.tracks = player.audioTracks();\n return _TrackButton.call(this, player, options) || this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n\n\n var _proto = AudioTrackButton.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-audio-button \" + _TrackButton.prototype.buildCSSClass.call(this);\n };\n\n _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n return \"vjs-audio-button \" + _TrackButton.prototype.buildWrapperCSSClass.call(this);\n }\n /**\n * Create a menu item for each audio track\n *\n * @param {AudioTrackMenuItem[]} [items=[]]\n * An array of existing menu items to use.\n *\n * @return {AudioTrackMenuItem[]}\n * An array of menu items\n */\n ;\n\n _proto.createItems = function createItems(items) {\n if (items === void 0) {\n items = [];\n }\n\n // if there's only one audio track, there no point in showing it\n this.hideThreshold_ = 1;\n var tracks = this.player_.audioTracks();\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i];\n items.push(new AudioTrackMenuItem(this.player_, {\n track: track,\n // MenuItem is selectable\n selectable: true,\n // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n multiSelectable: false\n }));\n }\n\n return items;\n };\n\n return AudioTrackButton;\n}(TrackButton);\n/**\n * The text that should display over the `AudioTrackButton`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\n\nAudioTrackButton.prototype.controlText_ = 'Audio Track';\nComponent$1.registerComponent('AudioTrackButton', AudioTrackButton);\n\n/**\n * The specific menu item type for selecting a playback rate.\n *\n * @extends MenuItem\n */\n\nvar PlaybackRateMenuItem = /*#__PURE__*/function (_MenuItem) {\n _inheritsLoose(PlaybackRateMenuItem, _MenuItem);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function PlaybackRateMenuItem(player, options) {\n var _this;\n\n var label = options.rate;\n var rate = parseFloat(label, 10); // Modify options for parent MenuItem class's init.\n\n options.label = label;\n options.selected = rate === player.playbackRate();\n options.selectable = true;\n options.multiSelectable = false;\n _this = _MenuItem.call(this, player, options) || this;\n _this.label = label;\n _this.rate = rate;\n\n _this.on(player, 'ratechange', function (e) {\n return _this.update(e);\n });\n\n return _this;\n }\n /**\n * This gets called when an `PlaybackRateMenuItem` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n\n\n var _proto = PlaybackRateMenuItem.prototype;\n\n _proto.handleClick = function handleClick(event) {\n _MenuItem.prototype.handleClick.call(this);\n\n this.player().playbackRate(this.rate);\n }\n /**\n * Update the PlaybackRateMenuItem when the playbackrate changes.\n *\n * @param {EventTarget~Event} [event]\n * The `ratechange` event that caused this function to run.\n *\n * @listens Player#ratechange\n */\n ;\n\n _proto.update = function update(event) {\n this.selected(this.player().playbackRate() === this.rate);\n };\n\n return PlaybackRateMenuItem;\n}(MenuItem);\n/**\n * The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\n\nPlaybackRateMenuItem.prototype.contentElType = 'button';\nComponent$1.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem);\n\n/**\n * The component for controlling the playback rate.\n *\n * @extends MenuButton\n */\n\nvar PlaybackRateMenuButton = /*#__PURE__*/function (_MenuButton) {\n _inheritsLoose(PlaybackRateMenuButton, _MenuButton);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function PlaybackRateMenuButton(player, options) {\n var _this;\n\n _this = _MenuButton.call(this, player, options) || this;\n\n _this.menuButton_.el_.setAttribute('aria-describedby', _this.labelElId_);\n\n _this.updateVisibility();\n\n _this.updateLabel();\n\n _this.on(player, 'loadstart', function (e) {\n return _this.updateVisibility(e);\n });\n\n _this.on(player, 'ratechange', function (e) {\n return _this.updateLabel(e);\n });\n\n _this.on(player, 'playbackrateschange', function (e) {\n return _this.handlePlaybackRateschange(e);\n });\n\n return _this;\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n\n\n var _proto = PlaybackRateMenuButton.prototype;\n\n _proto.createEl = function createEl$1() {\n var el = _MenuButton.prototype.createEl.call(this);\n\n this.labelElId_ = 'vjs-playback-rate-value-label-' + this.id_;\n this.labelEl_ = createEl('div', {\n className: 'vjs-playback-rate-value',\n id: this.labelElId_,\n textContent: '1x'\n });\n el.appendChild(this.labelEl_);\n return el;\n };\n\n _proto.dispose = function dispose() {\n this.labelEl_ = null;\n\n _MenuButton.prototype.dispose.call(this);\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n ;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-playback-rate \" + _MenuButton.prototype.buildCSSClass.call(this);\n };\n\n _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n return \"vjs-playback-rate \" + _MenuButton.prototype.buildWrapperCSSClass.call(this);\n }\n /**\n * Create the list of menu items. Specific to each subclass.\n *\n */\n ;\n\n _proto.createItems = function createItems() {\n var rates = this.playbackRates();\n var items = [];\n\n for (var i = rates.length - 1; i >= 0; i--) {\n items.push(new PlaybackRateMenuItem(this.player(), {\n rate: rates[i] + 'x'\n }));\n }\n\n return items;\n }\n /**\n * Updates ARIA accessibility attributes\n */\n ;\n\n _proto.updateARIAAttributes = function updateARIAAttributes() {\n // Current playback rate\n this.el().setAttribute('aria-valuenow', this.player().playbackRate());\n }\n /**\n * This gets called when an `PlaybackRateMenuButton` is \"clicked\". See\n * {@link ClickableComponent} for more detailed information on what a click can be.\n *\n * @param {EventTarget~Event} [event]\n * The `keydown`, `tap`, or `click` event that caused this function to be\n * called.\n *\n * @listens tap\n * @listens click\n */\n ;\n\n _proto.handleClick = function handleClick(event) {\n // select next rate option\n var currentRate = this.player().playbackRate();\n var rates = this.playbackRates();\n var currentIndex = rates.indexOf(currentRate); // this get the next rate and it will select first one if the last one currently selected\n\n var newIndex = (currentIndex + 1) % rates.length;\n this.player().playbackRate(rates[newIndex]);\n }\n /**\n * On playbackrateschange, update the menu to account for the new items.\n *\n * @listens Player#playbackrateschange\n */\n ;\n\n _proto.handlePlaybackRateschange = function handlePlaybackRateschange(event) {\n this.update();\n }\n /**\n * Get possible playback rates\n *\n * @return {Array}\n * All possible playback rates\n */\n ;\n\n _proto.playbackRates = function playbackRates() {\n var player = this.player();\n return player.playbackRates && player.playbackRates() || [];\n }\n /**\n * Get whether playback rates is supported by the tech\n * and an array of playback rates exists\n *\n * @return {boolean}\n * Whether changing playback rate is supported\n */\n ;\n\n _proto.playbackRateSupported = function playbackRateSupported() {\n return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0;\n }\n /**\n * Hide playback rate controls when they're no playback rate options to select\n *\n * @param {EventTarget~Event} [event]\n * The event that caused this function to run.\n *\n * @listens Player#loadstart\n */\n ;\n\n _proto.updateVisibility = function updateVisibility(event) {\n if (this.playbackRateSupported()) {\n this.removeClass('vjs-hidden');\n } else {\n this.addClass('vjs-hidden');\n }\n }\n /**\n * Update button label when rate changed\n *\n * @param {EventTarget~Event} [event]\n * The event that caused this function to run.\n *\n * @listens Player#ratechange\n */\n ;\n\n _proto.updateLabel = function updateLabel(event) {\n if (this.playbackRateSupported()) {\n this.labelEl_.textContent = this.player().playbackRate() + 'x';\n }\n };\n\n return PlaybackRateMenuButton;\n}(MenuButton);\n/**\n * The text that should display over the `FullscreenToggle`s controls. Added for localization.\n *\n * @type {string}\n * @private\n */\n\n\nPlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate';\nComponent$1.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton);\n\n/**\n * Just an empty spacer element that can be used as an append point for plugins, etc.\n * Also can be used to create space between elements when necessary.\n *\n * @extends Component\n */\n\nvar Spacer = /*#__PURE__*/function (_Component) {\n _inheritsLoose(Spacer, _Component);\n\n function Spacer() {\n return _Component.apply(this, arguments) || this;\n }\n\n var _proto = Spacer.prototype;\n\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-spacer \" + _Component.prototype.buildCSSClass.call(this);\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n ;\n\n _proto.createEl = function createEl(tag, props, attributes) {\n if (tag === void 0) {\n tag = 'div';\n }\n\n if (props === void 0) {\n props = {};\n }\n\n if (attributes === void 0) {\n attributes = {};\n }\n\n if (!props.className) {\n props.className = this.buildCSSClass();\n }\n\n return _Component.prototype.createEl.call(this, tag, props, attributes);\n };\n\n return Spacer;\n}(Component$1);\n\nComponent$1.registerComponent('Spacer', Spacer);\n\n/**\n * Spacer specifically meant to be used as an insertion point for new plugins, etc.\n *\n * @extends Spacer\n */\n\nvar CustomControlSpacer = /*#__PURE__*/function (_Spacer) {\n _inheritsLoose(CustomControlSpacer, _Spacer);\n\n function CustomControlSpacer() {\n return _Spacer.apply(this, arguments) || this;\n }\n\n var _proto = CustomControlSpacer.prototype;\n\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-custom-control-spacer \" + _Spacer.prototype.buildCSSClass.call(this);\n }\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n ;\n\n _proto.createEl = function createEl() {\n return _Spacer.prototype.createEl.call(this, 'div', {\n className: this.buildCSSClass(),\n // No-flex/table-cell mode requires there be some content\n // in the cell to fill the remaining space of the table.\n textContent: \"\\xA0\"\n });\n };\n\n return CustomControlSpacer;\n}(Spacer);\n\nComponent$1.registerComponent('CustomControlSpacer', CustomControlSpacer);\n\n/**\n * Container of main controls.\n *\n * @extends Component\n */\n\nvar ControlBar = /*#__PURE__*/function (_Component) {\n _inheritsLoose(ControlBar, _Component);\n\n function ControlBar() {\n return _Component.apply(this, arguments) || this;\n }\n\n var _proto = ControlBar.prototype;\n\n /**\n * Create the `Component`'s DOM element\n *\n * @return {Element}\n * The element that was created.\n */\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: 'vjs-control-bar',\n dir: 'ltr'\n });\n };\n\n return ControlBar;\n}(Component$1);\n/**\n * Default options for `ControlBar`\n *\n * @type {Object}\n * @private\n */\n\n\nControlBar.prototype.options_ = {\n children: ['playToggle', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'fullscreenToggle']\n};\n\nif ('exitPictureInPicture' in document) {\n ControlBar.prototype.options_.children.splice(ControlBar.prototype.options_.children.length - 1, 0, 'pictureInPictureToggle');\n}\n\nComponent$1.registerComponent('ControlBar', ControlBar);\n\n/**\n * A display that indicates an error has occurred. This means that the video\n * is unplayable.\n *\n * @extends ModalDialog\n */\n\nvar ErrorDisplay = /*#__PURE__*/function (_ModalDialog) {\n _inheritsLoose(ErrorDisplay, _ModalDialog);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function ErrorDisplay(player, options) {\n var _this;\n\n _this = _ModalDialog.call(this, player, options) || this;\n\n _this.on(player, 'error', function (e) {\n return _this.open(e);\n });\n\n return _this;\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n *\n * @deprecated Since version 5.\n */\n\n\n var _proto = ErrorDisplay.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return \"vjs-error-display \" + _ModalDialog.prototype.buildCSSClass.call(this);\n }\n /**\n * Gets the localized error message based on the `Player`s error.\n *\n * @return {string}\n * The `Player`s error message localized or an empty string.\n */\n ;\n\n _proto.content = function content() {\n var error = this.player().error();\n return error ? this.localize(error.message) : '';\n };\n\n return ErrorDisplay;\n}(ModalDialog);\n/**\n * The default options for an `ErrorDisplay`.\n *\n * @private\n */\n\n\nErrorDisplay.prototype.options_ = _extends({}, ModalDialog.prototype.options_, {\n pauseOnOpen: false,\n fillAlways: true,\n temporary: false,\n uncloseable: true\n});\nComponent$1.registerComponent('ErrorDisplay', ErrorDisplay);\n\nvar LOCAL_STORAGE_KEY$1 = 'vjs-text-track-settings';\nvar COLOR_BLACK = ['#000', 'Black'];\nvar COLOR_BLUE = ['#00F', 'Blue'];\nvar COLOR_CYAN = ['#0FF', 'Cyan'];\nvar COLOR_GREEN = ['#0F0', 'Green'];\nvar COLOR_MAGENTA = ['#F0F', 'Magenta'];\nvar COLOR_RED = ['#F00', 'Red'];\nvar COLOR_WHITE = ['#FFF', 'White'];\nvar COLOR_YELLOW = ['#FF0', 'Yellow'];\nvar OPACITY_OPAQUE = ['1', 'Opaque'];\nvar OPACITY_SEMI = ['0.5', 'Semi-Transparent'];\nvar OPACITY_TRANS = ['0', 'Transparent']; // Configuration for the various elements in the DOM of this component.\n//\n// Possible keys include:\n//\n// `default`:\n// The default option index. Only needs to be provided if not zero.\n// `parser`:\n// A function which is used to parse the value from the selected option in\n// a customized way.\n// `selector`:\n// The selector used to find the associated element.\n\nvar selectConfigs = {\n backgroundColor: {\n selector: '.vjs-bg-color > select',\n id: 'captions-background-color-%s',\n label: 'Color',\n options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]\n },\n backgroundOpacity: {\n selector: '.vjs-bg-opacity > select',\n id: 'captions-background-opacity-%s',\n label: 'Transparency',\n options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS]\n },\n color: {\n selector: '.vjs-fg-color > select',\n id: 'captions-foreground-color-%s',\n label: 'Color',\n options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]\n },\n edgeStyle: {\n selector: '.vjs-edge-style > select',\n id: '%s',\n label: 'Text Edge Style',\n options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Dropshadow']]\n },\n fontFamily: {\n selector: '.vjs-font-family > select',\n id: 'captions-font-family-%s',\n label: 'Font Family',\n options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']]\n },\n fontPercent: {\n selector: '.vjs-font-percent > select',\n id: 'captions-font-size-%s',\n label: 'Font Size',\n options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']],\n \"default\": 2,\n parser: function parser(v) {\n return v === '1.00' ? null : Number(v);\n }\n },\n textOpacity: {\n selector: '.vjs-text-opacity > select',\n id: 'captions-foreground-opacity-%s',\n label: 'Transparency',\n options: [OPACITY_OPAQUE, OPACITY_SEMI]\n },\n // Options for this object are defined below.\n windowColor: {\n selector: '.vjs-window-color > select',\n id: 'captions-window-color-%s',\n label: 'Color'\n },\n // Options for this object are defined below.\n windowOpacity: {\n selector: '.vjs-window-opacity > select',\n id: 'captions-window-opacity-%s',\n label: 'Transparency',\n options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE]\n }\n};\nselectConfigs.windowColor.options = selectConfigs.backgroundColor.options;\n/**\n * Get the actual value of an option.\n *\n * @param {string} value\n * The value to get\n *\n * @param {Function} [parser]\n * Optional function to adjust the value.\n *\n * @return {Mixed}\n * - Will be `undefined` if no value exists\n * - Will be `undefined` if the given value is \"none\".\n * - Will be the actual value otherwise.\n *\n * @private\n */\n\nfunction parseOptionValue(value, parser) {\n if (parser) {\n value = parser(value);\n }\n\n if (value && value !== 'none') {\n return value;\n }\n}\n/**\n * Gets the value of the selected element within a element.\n *\n * @param {Element} el\n * the element to look in\n *\n * @param {Function} [parser]\n * Optional function to adjust the value.\n *\n * @return {Mixed}\n * - Will be `undefined` if no value exists\n * - Will be `undefined` if the given value is \"none\".\n * - Will be the actual value otherwise.\n *\n * @private\n */\n\n\nfunction getSelectedOptionValue(el, parser) {\n var value = el.options[el.options.selectedIndex].value;\n return parseOptionValue(value, parser);\n}\n/**\n * Sets the selected element within a element based on a\n * given value.\n *\n * @param {Element} el\n * The element to look in.\n *\n * @param {string} value\n * the property to look on.\n *\n * @param {Function} [parser]\n * Optional function to adjust the value before comparing.\n *\n * @private\n */\n\n\nfunction setSelectedOption(el, value, parser) {\n if (!value) {\n return;\n }\n\n for (var i = 0; i < el.options.length; i++) {\n if (parseOptionValue(el.options[i].value, parser) === value) {\n el.selectedIndex = i;\n break;\n }\n }\n}\n/**\n * Manipulate Text Tracks settings.\n *\n * @extends ModalDialog\n */\n\n\nvar TextTrackSettings = /*#__PURE__*/function (_ModalDialog) {\n _inheritsLoose(TextTrackSettings, _ModalDialog);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n */\n function TextTrackSettings(player, options) {\n var _this;\n\n options.temporary = false;\n _this = _ModalDialog.call(this, player, options) || this;\n _this.updateDisplay = _this.updateDisplay.bind(_assertThisInitialized(_this)); // fill the modal and pretend we have opened it\n\n _this.fill();\n\n _this.hasBeenOpened_ = _this.hasBeenFilled_ = true;\n _this.endDialog = createEl('p', {\n className: 'vjs-control-text',\n textContent: _this.localize('End of dialog window.')\n });\n\n _this.el().appendChild(_this.endDialog);\n\n _this.setDefaults(); // Grab `persistTextTrackSettings` from the player options if not passed in child options\n\n\n if (options.persistTextTrackSettings === undefined) {\n _this.options_.persistTextTrackSettings = _this.options_.playerOptions.persistTextTrackSettings;\n }\n\n _this.on(_this.$('.vjs-done-button'), 'click', function () {\n _this.saveSettings();\n\n _this.close();\n });\n\n _this.on(_this.$('.vjs-default-button'), 'click', function () {\n _this.setDefaults();\n\n _this.updateDisplay();\n });\n\n each(selectConfigs, function (config) {\n _this.on(_this.$(config.selector), 'change', _this.updateDisplay);\n });\n\n if (_this.options_.persistTextTrackSettings) {\n _this.restoreSettings();\n }\n\n return _this;\n }\n\n var _proto = TextTrackSettings.prototype;\n\n _proto.dispose = function dispose() {\n this.endDialog = null;\n\n _ModalDialog.prototype.dispose.call(this);\n }\n /**\n * Create a element with configured options.\n *\n * @param {string} key\n * Configuration key to use during creation.\n *\n * @return {string}\n * An HTML string.\n *\n * @private\n */\n ;\n\n _proto.createElSelect_ = function createElSelect_(key, legendId, type) {\n var _this2 = this;\n\n if (legendId === void 0) {\n legendId = '';\n }\n\n if (type === void 0) {\n type = 'label';\n }\n\n var config = selectConfigs[key];\n var id = config.id.replace('%s', this.id_);\n var selectLabelledbyIds = [legendId, id].join(' ').trim();\n return [\"<\" + type + \" id=\\\"\" + id + \"\\\" class=\\\"\" + (type === 'label' ? 'vjs-label' : '') + \"\\\">\", this.localize(config.label), \"\", \"\"].concat(config.options.map(function (o) {\n var optionId = id + '-' + o[1].replace(/\\W+/g, '');\n return [\"\", _this2.localize(o[1]), ' '].join('');\n })).concat(' ').join('');\n }\n /**\n * Create foreground color element for the component\n *\n * @return {string}\n * An HTML string.\n *\n * @private\n */\n ;\n\n _proto.createElFgColor_ = function createElFgColor_() {\n var legendId = \"captions-text-legend-\" + this.id_;\n return ['', \"\", this.localize('Text'), ' ', this.createElSelect_('color', legendId), '', this.createElSelect_('textOpacity', legendId), ' ', ' '].join('');\n }\n /**\n * Create background color element for the component\n *\n * @return {string}\n * An HTML string.\n *\n * @private\n */\n ;\n\n _proto.createElBgColor_ = function createElBgColor_() {\n var legendId = \"captions-background-\" + this.id_;\n return ['', \"\", this.localize('Background'), ' ', this.createElSelect_('backgroundColor', legendId), '', this.createElSelect_('backgroundOpacity', legendId), ' ', ' '].join('');\n }\n /**\n * Create window color element for the component\n *\n * @return {string}\n * An HTML string.\n *\n * @private\n */\n ;\n\n _proto.createElWinColor_ = function createElWinColor_() {\n var legendId = \"captions-window-\" + this.id_;\n return ['', \"\", this.localize('Window'), ' ', this.createElSelect_('windowColor', legendId), '', this.createElSelect_('windowOpacity', legendId), ' ', ' '].join('');\n }\n /**\n * Create color elements for the component\n *\n * @return {Element}\n * The element that was created\n *\n * @private\n */\n ;\n\n _proto.createElColors_ = function createElColors_() {\n return createEl('div', {\n className: 'vjs-track-settings-colors',\n innerHTML: [this.createElFgColor_(), this.createElBgColor_(), this.createElWinColor_()].join('')\n });\n }\n /**\n * Create font elements for the component\n *\n * @return {Element}\n * The element that was created.\n *\n * @private\n */\n ;\n\n _proto.createElFont_ = function createElFont_() {\n return createEl('div', {\n className: 'vjs-track-settings-font',\n innerHTML: ['', this.createElSelect_('fontPercent', '', 'legend'), ' ', '', this.createElSelect_('edgeStyle', '', 'legend'), ' ', '', this.createElSelect_('fontFamily', '', 'legend'), ' '].join('')\n });\n }\n /**\n * Create controls for the component\n *\n * @return {Element}\n * The element that was created.\n *\n * @private\n */\n ;\n\n _proto.createElControls_ = function createElControls_() {\n var defaultsDescription = this.localize('restore all settings to the default values');\n return createEl('div', {\n className: 'vjs-track-settings-controls',\n innerHTML: [\"\", this.localize('Reset'), \" \" + defaultsDescription + \" \", ' ', \"\" + this.localize('Done') + \" \"].join('')\n });\n };\n\n _proto.content = function content() {\n return [this.createElColors_(), this.createElFont_(), this.createElControls_()];\n };\n\n _proto.label = function label() {\n return this.localize('Caption Settings Dialog');\n };\n\n _proto.description = function description() {\n return this.localize('Beginning of dialog window. Escape will cancel and close the window.');\n };\n\n _proto.buildCSSClass = function buildCSSClass() {\n return _ModalDialog.prototype.buildCSSClass.call(this) + ' vjs-text-track-settings';\n }\n /**\n * Gets an object of text track settings (or null).\n *\n * @return {Object}\n * An object with config values parsed from the DOM or localStorage.\n */\n ;\n\n _proto.getValues = function getValues() {\n var _this3 = this;\n\n return reduce(selectConfigs, function (accum, config, key) {\n var value = getSelectedOptionValue(_this3.$(config.selector), config.parser);\n\n if (value !== undefined) {\n accum[key] = value;\n }\n\n return accum;\n }, {});\n }\n /**\n * Sets text track settings from an object of values.\n *\n * @param {Object} values\n * An object with config values parsed from the DOM or localStorage.\n */\n ;\n\n _proto.setValues = function setValues(values) {\n var _this4 = this;\n\n each(selectConfigs, function (config, key) {\n setSelectedOption(_this4.$(config.selector), values[key], config.parser);\n });\n }\n /**\n * Sets all `` elements to their default values.\n */\n ;\n\n _proto.setDefaults = function setDefaults() {\n var _this5 = this;\n\n each(selectConfigs, function (config) {\n var index = config.hasOwnProperty('default') ? config[\"default\"] : 0;\n _this5.$(config.selector).selectedIndex = index;\n });\n }\n /**\n * Restore texttrack settings from localStorage\n */\n ;\n\n _proto.restoreSettings = function restoreSettings() {\n var values;\n\n try {\n values = JSON.parse(window$1.localStorage.getItem(LOCAL_STORAGE_KEY$1));\n } catch (err) {\n log$1.warn(err);\n }\n\n if (values) {\n this.setValues(values);\n }\n }\n /**\n * Save text track settings to localStorage\n */\n ;\n\n _proto.saveSettings = function saveSettings() {\n if (!this.options_.persistTextTrackSettings) {\n return;\n }\n\n var values = this.getValues();\n\n try {\n if (Object.keys(values).length) {\n window$1.localStorage.setItem(LOCAL_STORAGE_KEY$1, JSON.stringify(values));\n } else {\n window$1.localStorage.removeItem(LOCAL_STORAGE_KEY$1);\n }\n } catch (err) {\n log$1.warn(err);\n }\n }\n /**\n * Update display of text track settings\n */\n ;\n\n _proto.updateDisplay = function updateDisplay() {\n var ttDisplay = this.player_.getChild('textTrackDisplay');\n\n if (ttDisplay) {\n ttDisplay.updateDisplay();\n }\n }\n /**\n * conditionally blur the element and refocus the captions button\n *\n * @private\n */\n ;\n\n _proto.conditionalBlur_ = function conditionalBlur_() {\n this.previouslyActiveEl_ = null;\n var cb = this.player_.controlBar;\n var subsCapsBtn = cb && cb.subsCapsButton;\n var ccBtn = cb && cb.captionsButton;\n\n if (subsCapsBtn) {\n subsCapsBtn.focus();\n } else if (ccBtn) {\n ccBtn.focus();\n }\n };\n\n return TextTrackSettings;\n}(ModalDialog);\n\nComponent$1.registerComponent('TextTrackSettings', TextTrackSettings);\n\n/**\n * A Resize Manager. It is in charge of triggering `playerresize` on the player in the right conditions.\n *\n * It'll either create an iframe and use a debounced resize handler on it or use the new {@link https://wicg.github.io/ResizeObserver/|ResizeObserver}.\n *\n * If the ResizeObserver is available natively, it will be used. A polyfill can be passed in as an option.\n * If a `playerresize` event is not needed, the ResizeManager component can be removed from the player, see the example below.\n * @example How to disable the resize manager \n * const player = videojs('#vid', {\n * resizeManager: false\n * });\n *\n * @see {@link https://wicg.github.io/ResizeObserver/|ResizeObserver specification}\n *\n * @extends Component\n */\n\nvar ResizeManager = /*#__PURE__*/function (_Component) {\n _inheritsLoose(ResizeManager, _Component);\n\n /**\n * Create the ResizeManager.\n *\n * @param {Object} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of ResizeManager options.\n *\n * @param {Object} [options.ResizeObserver]\n * A polyfill for ResizeObserver can be passed in here.\n * If this is set to null it will ignore the native ResizeObserver and fall back to the iframe fallback.\n */\n function ResizeManager(player, options) {\n var _this;\n\n var RESIZE_OBSERVER_AVAILABLE = options.ResizeObserver || window$1.ResizeObserver; // if `null` was passed, we want to disable the ResizeObserver\n\n if (options.ResizeObserver === null) {\n RESIZE_OBSERVER_AVAILABLE = false;\n } // Only create an element when ResizeObserver isn't available\n\n\n var options_ = mergeOptions$3({\n createEl: !RESIZE_OBSERVER_AVAILABLE,\n reportTouchActivity: false\n }, options);\n _this = _Component.call(this, player, options_) || this;\n _this.ResizeObserver = options.ResizeObserver || window$1.ResizeObserver;\n _this.loadListener_ = null;\n _this.resizeObserver_ = null;\n _this.debouncedHandler_ = debounce(function () {\n _this.resizeHandler();\n }, 100, false, _assertThisInitialized(_this));\n\n if (RESIZE_OBSERVER_AVAILABLE) {\n _this.resizeObserver_ = new _this.ResizeObserver(_this.debouncedHandler_);\n\n _this.resizeObserver_.observe(player.el());\n } else {\n _this.loadListener_ = function () {\n if (!_this.el_ || !_this.el_.contentWindow) {\n return;\n }\n\n var debouncedHandler_ = _this.debouncedHandler_;\n\n var unloadListener_ = _this.unloadListener_ = function () {\n off(this, 'resize', debouncedHandler_);\n off(this, 'unload', unloadListener_);\n unloadListener_ = null;\n }; // safari and edge can unload the iframe before resizemanager dispose\n // we have to dispose of event handlers correctly before that happens\n\n\n on(_this.el_.contentWindow, 'unload', unloadListener_);\n on(_this.el_.contentWindow, 'resize', debouncedHandler_);\n };\n\n _this.one('load', _this.loadListener_);\n }\n\n return _this;\n }\n\n var _proto = ResizeManager.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'iframe', {\n className: 'vjs-resize-manager',\n tabIndex: -1,\n title: this.localize('No content')\n }, {\n 'aria-hidden': 'true'\n });\n }\n /**\n * Called when a resize is triggered on the iframe or a resize is observed via the ResizeObserver\n *\n * @fires Player#playerresize\n */\n ;\n\n _proto.resizeHandler = function resizeHandler() {\n /**\n * Called when the player size has changed\n *\n * @event Player#playerresize\n * @type {EventTarget~Event}\n */\n // make sure player is still around to trigger\n // prevents this from causing an error after dispose\n if (!this.player_ || !this.player_.trigger) {\n return;\n }\n\n this.player_.trigger('playerresize');\n };\n\n _proto.dispose = function dispose() {\n if (this.debouncedHandler_) {\n this.debouncedHandler_.cancel();\n }\n\n if (this.resizeObserver_) {\n if (this.player_.el()) {\n this.resizeObserver_.unobserve(this.player_.el());\n }\n\n this.resizeObserver_.disconnect();\n }\n\n if (this.loadListener_) {\n this.off('load', this.loadListener_);\n }\n\n if (this.el_ && this.el_.contentWindow && this.unloadListener_) {\n this.unloadListener_.call(this.el_.contentWindow);\n }\n\n this.ResizeObserver = null;\n this.resizeObserver = null;\n this.debouncedHandler_ = null;\n this.loadListener_ = null;\n\n _Component.prototype.dispose.call(this);\n };\n\n return ResizeManager;\n}(Component$1);\n\nComponent$1.registerComponent('ResizeManager', ResizeManager);\n\nvar defaults = {\n trackingThreshold: 20,\n liveTolerance: 15\n};\n/*\n track when we are at the live edge, and other helpers for live playback */\n\n/**\n * A class for checking live current time and determining when the player\n * is at or behind the live edge.\n */\n\nvar LiveTracker = /*#__PURE__*/function (_Component) {\n _inheritsLoose(LiveTracker, _Component);\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {number} [options.trackingThreshold=20]\n * Number of seconds of live window (seekableEnd - seekableStart) that\n * media needs to have before the liveui will be shown.\n *\n * @param {number} [options.liveTolerance=15]\n * Number of seconds behind live that we have to be\n * before we will be considered non-live. Note that this will only\n * be used when playing at the live edge. This allows large seekable end\n * changes to not effect wether we are live or not.\n */\n function LiveTracker(player, options) {\n var _this;\n\n // LiveTracker does not need an element\n var options_ = mergeOptions$3(defaults, options, {\n createEl: false\n });\n _this = _Component.call(this, player, options_) || this;\n\n _this.handleVisibilityChange_ = function (e) {\n return _this.handleVisibilityChange(e);\n };\n\n _this.trackLiveHandler_ = function () {\n return _this.trackLive_();\n };\n\n _this.handlePlay_ = function (e) {\n return _this.handlePlay(e);\n };\n\n _this.handleFirstTimeupdate_ = function (e) {\n return _this.handleFirstTimeupdate(e);\n };\n\n _this.handleSeeked_ = function (e) {\n return _this.handleSeeked(e);\n };\n\n _this.seekToLiveEdge_ = function (e) {\n return _this.seekToLiveEdge(e);\n };\n\n _this.reset_();\n\n _this.on(_this.player_, 'durationchange', function (e) {\n return _this.handleDurationchange(e);\n }); // we should try to toggle tracking on canplay as native playback engines, like Safari\n // may not have the proper values for things like seekableEnd until then\n\n\n _this.on(_this.player_, 'canplay', function () {\n return _this.toggleTracking();\n }); // we don't need to track live playback if the document is hidden,\n // also, tracking when the document is hidden can\n // cause the CPU to spike and eventually crash the page on IE11.\n\n\n if (IE_VERSION && 'hidden' in document && 'visibilityState' in document) {\n _this.on(document, 'visibilitychange', _this.handleVisibilityChange_);\n }\n\n return _this;\n }\n /**\n * toggle tracking based on document visiblility\n */\n\n\n var _proto = LiveTracker.prototype;\n\n _proto.handleVisibilityChange = function handleVisibilityChange() {\n if (this.player_.duration() !== Infinity) {\n return;\n }\n\n if (document.hidden) {\n this.stopTracking();\n } else {\n this.startTracking();\n }\n }\n /**\n * all the functionality for tracking when seek end changes\n * and for tracking how far past seek end we should be\n */\n ;\n\n _proto.trackLive_ = function trackLive_() {\n var seekable = this.player_.seekable(); // skip undefined seekable\n\n if (!seekable || !seekable.length) {\n return;\n }\n\n var newTime = Number(window$1.performance.now().toFixed(4));\n var deltaTime = this.lastTime_ === -1 ? 0 : (newTime - this.lastTime_) / 1000;\n this.lastTime_ = newTime;\n this.pastSeekEnd_ = this.pastSeekEnd() + deltaTime;\n var liveCurrentTime = this.liveCurrentTime();\n var currentTime = this.player_.currentTime(); // we are behind live if any are true\n // 1. the player is paused\n // 2. the user seeked to a location 2 seconds away from live\n // 3. the difference between live and current time is greater\n // liveTolerance which defaults to 15s\n\n var isBehind = this.player_.paused() || this.seekedBehindLive_ || Math.abs(liveCurrentTime - currentTime) > this.options_.liveTolerance; // we cannot be behind if\n // 1. until we have not seen a timeupdate yet\n // 2. liveCurrentTime is Infinity, which happens on Android and Native Safari\n\n if (!this.timeupdateSeen_ || liveCurrentTime === Infinity) {\n isBehind = false;\n }\n\n if (isBehind !== this.behindLiveEdge_) {\n this.behindLiveEdge_ = isBehind;\n this.trigger('liveedgechange');\n }\n }\n /**\n * handle a durationchange event on the player\n * and start/stop tracking accordingly.\n */\n ;\n\n _proto.handleDurationchange = function handleDurationchange() {\n this.toggleTracking();\n }\n /**\n * start/stop tracking\n */\n ;\n\n _proto.toggleTracking = function toggleTracking() {\n if (this.player_.duration() === Infinity && this.liveWindow() >= this.options_.trackingThreshold) {\n if (this.player_.options_.liveui) {\n this.player_.addClass('vjs-liveui');\n }\n\n this.startTracking();\n } else {\n this.player_.removeClass('vjs-liveui');\n this.stopTracking();\n }\n }\n /**\n * start tracking live playback\n */\n ;\n\n _proto.startTracking = function startTracking() {\n if (this.isTracking()) {\n return;\n } // If we haven't seen a timeupdate, we need to check whether playback\n // began before this component started tracking. This can happen commonly\n // when using autoplay.\n\n\n if (!this.timeupdateSeen_) {\n this.timeupdateSeen_ = this.player_.hasStarted();\n }\n\n this.trackingInterval_ = this.setInterval(this.trackLiveHandler_, UPDATE_REFRESH_INTERVAL);\n this.trackLive_();\n this.on(this.player_, ['play', 'pause'], this.trackLiveHandler_);\n\n if (!this.timeupdateSeen_) {\n this.one(this.player_, 'play', this.handlePlay_);\n this.one(this.player_, 'timeupdate', this.handleFirstTimeupdate_);\n } else {\n this.on(this.player_, 'seeked', this.handleSeeked_);\n }\n }\n /**\n * handle the first timeupdate on the player if it wasn't already playing\n * when live tracker started tracking.\n */\n ;\n\n _proto.handleFirstTimeupdate = function handleFirstTimeupdate() {\n this.timeupdateSeen_ = true;\n this.on(this.player_, 'seeked', this.handleSeeked_);\n }\n /**\n * Keep track of what time a seek starts, and listen for seeked\n * to find where a seek ends.\n */\n ;\n\n _proto.handleSeeked = function handleSeeked() {\n var timeDiff = Math.abs(this.liveCurrentTime() - this.player_.currentTime());\n this.seekedBehindLive_ = this.nextSeekedFromUser_ && timeDiff > 2;\n this.nextSeekedFromUser_ = false;\n this.trackLive_();\n }\n /**\n * handle the first play on the player, and make sure that we seek\n * right to the live edge.\n */\n ;\n\n _proto.handlePlay = function handlePlay() {\n this.one(this.player_, 'timeupdate', this.seekToLiveEdge_);\n }\n /**\n * Stop tracking, and set all internal variables to\n * their initial value.\n */\n ;\n\n _proto.reset_ = function reset_() {\n this.lastTime_ = -1;\n this.pastSeekEnd_ = 0;\n this.lastSeekEnd_ = -1;\n this.behindLiveEdge_ = true;\n this.timeupdateSeen_ = false;\n this.seekedBehindLive_ = false;\n this.nextSeekedFromUser_ = false;\n this.clearInterval(this.trackingInterval_);\n this.trackingInterval_ = null;\n this.off(this.player_, ['play', 'pause'], this.trackLiveHandler_);\n this.off(this.player_, 'seeked', this.handleSeeked_);\n this.off(this.player_, 'play', this.handlePlay_);\n this.off(this.player_, 'timeupdate', this.handleFirstTimeupdate_);\n this.off(this.player_, 'timeupdate', this.seekToLiveEdge_);\n }\n /**\n * The next seeked event is from the user. Meaning that any seek\n * > 2s behind live will be considered behind live for real and\n * liveTolerance will be ignored.\n */\n ;\n\n _proto.nextSeekedFromUser = function nextSeekedFromUser() {\n this.nextSeekedFromUser_ = true;\n }\n /**\n * stop tracking live playback\n */\n ;\n\n _proto.stopTracking = function stopTracking() {\n if (!this.isTracking()) {\n return;\n }\n\n this.reset_();\n this.trigger('liveedgechange');\n }\n /**\n * A helper to get the player seekable end\n * so that we don't have to null check everywhere\n *\n * @return {number}\n * The furthest seekable end or Infinity.\n */\n ;\n\n _proto.seekableEnd = function seekableEnd() {\n var seekable = this.player_.seekable();\n var seekableEnds = [];\n var i = seekable ? seekable.length : 0;\n\n while (i--) {\n seekableEnds.push(seekable.end(i));\n } // grab the furthest seekable end after sorting, or if there are none\n // default to Infinity\n\n\n return seekableEnds.length ? seekableEnds.sort()[seekableEnds.length - 1] : Infinity;\n }\n /**\n * A helper to get the player seekable start\n * so that we don't have to null check everywhere\n *\n * @return {number}\n * The earliest seekable start or 0.\n */\n ;\n\n _proto.seekableStart = function seekableStart() {\n var seekable = this.player_.seekable();\n var seekableStarts = [];\n var i = seekable ? seekable.length : 0;\n\n while (i--) {\n seekableStarts.push(seekable.start(i));\n } // grab the first seekable start after sorting, or if there are none\n // default to 0\n\n\n return seekableStarts.length ? seekableStarts.sort()[0] : 0;\n }\n /**\n * Get the live time window aka\n * the amount of time between seekable start and\n * live current time.\n *\n * @return {number}\n * The amount of seconds that are seekable in\n * the live video.\n */\n ;\n\n _proto.liveWindow = function liveWindow() {\n var liveCurrentTime = this.liveCurrentTime(); // if liveCurrenTime is Infinity then we don't have a liveWindow at all\n\n if (liveCurrentTime === Infinity) {\n return 0;\n }\n\n return liveCurrentTime - this.seekableStart();\n }\n /**\n * Determines if the player is live, only checks if this component\n * is tracking live playback or not\n *\n * @return {boolean}\n * Wether liveTracker is tracking\n */\n ;\n\n _proto.isLive = function isLive() {\n return this.isTracking();\n }\n /**\n * Determines if currentTime is at the live edge and won't fall behind\n * on each seekableendchange\n *\n * @return {boolean}\n * Wether playback is at the live edge\n */\n ;\n\n _proto.atLiveEdge = function atLiveEdge() {\n return !this.behindLiveEdge();\n }\n /**\n * get what we expect the live current time to be\n *\n * @return {number}\n * The expected live current time\n */\n ;\n\n _proto.liveCurrentTime = function liveCurrentTime() {\n return this.pastSeekEnd() + this.seekableEnd();\n }\n /**\n * The number of seconds that have occured after seekable end\n * changed. This will be reset to 0 once seekable end changes.\n *\n * @return {number}\n * Seconds past the current seekable end\n */\n ;\n\n _proto.pastSeekEnd = function pastSeekEnd() {\n var seekableEnd = this.seekableEnd();\n\n if (this.lastSeekEnd_ !== -1 && seekableEnd !== this.lastSeekEnd_) {\n this.pastSeekEnd_ = 0;\n }\n\n this.lastSeekEnd_ = seekableEnd;\n return this.pastSeekEnd_;\n }\n /**\n * If we are currently behind the live edge, aka currentTime will be\n * behind on a seekableendchange\n *\n * @return {boolean}\n * If we are behind the live edge\n */\n ;\n\n _proto.behindLiveEdge = function behindLiveEdge() {\n return this.behindLiveEdge_;\n }\n /**\n * Wether live tracker is currently tracking or not.\n */\n ;\n\n _proto.isTracking = function isTracking() {\n return typeof this.trackingInterval_ === 'number';\n }\n /**\n * Seek to the live edge if we are behind the live edge\n */\n ;\n\n _proto.seekToLiveEdge = function seekToLiveEdge() {\n this.seekedBehindLive_ = false;\n\n if (this.atLiveEdge()) {\n return;\n }\n\n this.nextSeekedFromUser_ = false;\n this.player_.currentTime(this.liveCurrentTime());\n }\n /**\n * Dispose of liveTracker\n */\n ;\n\n _proto.dispose = function dispose() {\n this.off(document, 'visibilitychange', this.handleVisibilityChange_);\n this.stopTracking();\n\n _Component.prototype.dispose.call(this);\n };\n\n return LiveTracker;\n}(Component$1);\n\nComponent$1.registerComponent('LiveTracker', LiveTracker);\n\n/**\n * This function is used to fire a sourceset when there is something\n * similar to `mediaEl.load()` being called. It will try to find the source via\n * the `src` attribute and then the `` elements. It will then fire `sourceset`\n * with the source that was found or empty string if we cannot know. If it cannot\n * find a source then `sourceset` will not be fired.\n *\n * @param {Html5} tech\n * The tech object that sourceset was setup on\n *\n * @return {boolean}\n * returns false if the sourceset was not fired and true otherwise.\n */\n\nvar sourcesetLoad = function sourcesetLoad(tech) {\n var el = tech.el(); // if `el.src` is set, that source will be loaded.\n\n if (el.hasAttribute('src')) {\n tech.triggerSourceset(el.src);\n return true;\n }\n /**\n * Since there isn't a src property on the media element, source elements will be used for\n * implementing the source selection algorithm. This happens asynchronously and\n * for most cases were there is more than one source we cannot tell what source will\n * be loaded, without re-implementing the source selection algorithm. At this time we are not\n * going to do that. There are three special cases that we do handle here though:\n *\n * 1. If there are no sources, do not fire `sourceset`.\n * 2. If there is only one `` with a `src` property/attribute that is our `src`\n * 3. If there is more than one `` but all of them have the same `src` url.\n * That will be our src.\n */\n\n\n var sources = tech.$$('source');\n var srcUrls = [];\n var src = ''; // if there are no sources, do not fire sourceset\n\n if (!sources.length) {\n return false;\n } // only count valid/non-duplicate source elements\n\n\n for (var i = 0; i < sources.length; i++) {\n var url = sources[i].src;\n\n if (url && srcUrls.indexOf(url) === -1) {\n srcUrls.push(url);\n }\n } // there were no valid sources\n\n\n if (!srcUrls.length) {\n return false;\n } // there is only one valid source element url\n // use that\n\n\n if (srcUrls.length === 1) {\n src = srcUrls[0];\n }\n\n tech.triggerSourceset(src);\n return true;\n};\n/**\n * our implementation of an `innerHTML` descriptor for browsers\n * that do not have one.\n */\n\n\nvar innerHTMLDescriptorPolyfill = Object.defineProperty({}, 'innerHTML', {\n get: function get() {\n return this.cloneNode(true).innerHTML;\n },\n set: function set(v) {\n // make a dummy node to use innerHTML on\n var dummy = document.createElement(this.nodeName.toLowerCase()); // set innerHTML to the value provided\n\n dummy.innerHTML = v; // make a document fragment to hold the nodes from dummy\n\n var docFrag = document.createDocumentFragment(); // copy all of the nodes created by the innerHTML on dummy\n // to the document fragment\n\n while (dummy.childNodes.length) {\n docFrag.appendChild(dummy.childNodes[0]);\n } // remove content\n\n\n this.innerText = ''; // now we add all of that html in one by appending the\n // document fragment. This is how innerHTML does it.\n\n window$1.Element.prototype.appendChild.call(this, docFrag); // then return the result that innerHTML's setter would\n\n return this.innerHTML;\n }\n});\n/**\n * Get a property descriptor given a list of priorities and the\n * property to get.\n */\n\nvar getDescriptor = function getDescriptor(priority, prop) {\n var descriptor = {};\n\n for (var i = 0; i < priority.length; i++) {\n descriptor = Object.getOwnPropertyDescriptor(priority[i], prop);\n\n if (descriptor && descriptor.set && descriptor.get) {\n break;\n }\n }\n\n descriptor.enumerable = true;\n descriptor.configurable = true;\n return descriptor;\n};\n\nvar getInnerHTMLDescriptor = function getInnerHTMLDescriptor(tech) {\n return getDescriptor([tech.el(), window$1.HTMLMediaElement.prototype, window$1.Element.prototype, innerHTMLDescriptorPolyfill], 'innerHTML');\n};\n/**\n * Patches browser internal functions so that we can tell synchronously\n * if a `` was appended to the media element. For some reason this\n * causes a `sourceset` if the the media element is ready and has no source.\n * This happens when:\n * - The page has just loaded and the media element does not have a source.\n * - The media element was emptied of all sources, then `load()` was called.\n *\n * It does this by patching the following functions/properties when they are supported:\n *\n * - `append()` - can be used to add a `` element to the media element\n * - `appendChild()` - can be used to add a `` element to the media element\n * - `insertAdjacentHTML()` - can be used to add a `` element to the media element\n * - `innerHTML` - can be used to add a `` element to the media element\n *\n * @param {Html5} tech\n * The tech object that sourceset is being setup on.\n */\n\n\nvar firstSourceWatch = function firstSourceWatch(tech) {\n var el = tech.el(); // make sure firstSourceWatch isn't setup twice.\n\n if (el.resetSourceWatch_) {\n return;\n }\n\n var old = {};\n var innerDescriptor = getInnerHTMLDescriptor(tech);\n\n var appendWrapper = function appendWrapper(appendFn) {\n return function () {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n var retval = appendFn.apply(el, args);\n sourcesetLoad(tech);\n return retval;\n };\n };\n\n ['append', 'appendChild', 'insertAdjacentHTML'].forEach(function (k) {\n if (!el[k]) {\n return;\n } // store the old function\n\n\n old[k] = el[k]; // call the old function with a sourceset if a source\n // was loaded\n\n el[k] = appendWrapper(old[k]);\n });\n Object.defineProperty(el, 'innerHTML', mergeOptions$3(innerDescriptor, {\n set: appendWrapper(innerDescriptor.set)\n }));\n\n el.resetSourceWatch_ = function () {\n el.resetSourceWatch_ = null;\n Object.keys(old).forEach(function (k) {\n el[k] = old[k];\n });\n Object.defineProperty(el, 'innerHTML', innerDescriptor);\n }; // on the first sourceset, we need to revert our changes\n\n\n tech.one('sourceset', el.resetSourceWatch_);\n};\n/**\n * our implementation of a `src` descriptor for browsers\n * that do not have one.\n */\n\n\nvar srcDescriptorPolyfill = Object.defineProperty({}, 'src', {\n get: function get() {\n if (this.hasAttribute('src')) {\n return getAbsoluteURL(window$1.Element.prototype.getAttribute.call(this, 'src'));\n }\n\n return '';\n },\n set: function set(v) {\n window$1.Element.prototype.setAttribute.call(this, 'src', v);\n return v;\n }\n});\n\nvar getSrcDescriptor = function getSrcDescriptor(tech) {\n return getDescriptor([tech.el(), window$1.HTMLMediaElement.prototype, srcDescriptorPolyfill], 'src');\n};\n/**\n * setup `sourceset` handling on the `Html5` tech. This function\n * patches the following element properties/functions:\n *\n * - `src` - to determine when `src` is set\n * - `setAttribute()` - to determine when `src` is set\n * - `load()` - this re-triggers the source selection algorithm, and can\n * cause a sourceset.\n *\n * If there is no source when we are adding `sourceset` support or during a `load()`\n * we also patch the functions listed in `firstSourceWatch`.\n *\n * @param {Html5} tech\n * The tech to patch\n */\n\n\nvar setupSourceset = function setupSourceset(tech) {\n if (!tech.featuresSourceset) {\n return;\n }\n\n var el = tech.el(); // make sure sourceset isn't setup twice.\n\n if (el.resetSourceset_) {\n return;\n }\n\n var srcDescriptor = getSrcDescriptor(tech);\n var oldSetAttribute = el.setAttribute;\n var oldLoad = el.load;\n Object.defineProperty(el, 'src', mergeOptions$3(srcDescriptor, {\n set: function set(v) {\n var retval = srcDescriptor.set.call(el, v); // we use the getter here to get the actual value set on src\n\n tech.triggerSourceset(el.src);\n return retval;\n }\n }));\n\n el.setAttribute = function (n, v) {\n var retval = oldSetAttribute.call(el, n, v);\n\n if (/src/i.test(n)) {\n tech.triggerSourceset(el.src);\n }\n\n return retval;\n };\n\n el.load = function () {\n var retval = oldLoad.call(el); // if load was called, but there was no source to fire\n // sourceset on. We have to watch for a source append\n // as that can trigger a `sourceset` when the media element\n // has no source\n\n if (!sourcesetLoad(tech)) {\n tech.triggerSourceset('');\n firstSourceWatch(tech);\n }\n\n return retval;\n };\n\n if (el.currentSrc) {\n tech.triggerSourceset(el.currentSrc);\n } else if (!sourcesetLoad(tech)) {\n firstSourceWatch(tech);\n }\n\n el.resetSourceset_ = function () {\n el.resetSourceset_ = null;\n el.load = oldLoad;\n el.setAttribute = oldSetAttribute;\n Object.defineProperty(el, 'src', srcDescriptor);\n\n if (el.resetSourceWatch_) {\n el.resetSourceWatch_();\n }\n };\n};\n\n/**\n * Object.defineProperty but \"lazy\", which means that the value is only set after\n * it retrieved the first time, rather than being set right away.\n *\n * @param {Object} obj the object to set the property on\n * @param {string} key the key for the property to set\n * @param {Function} getValue the function used to get the value when it is needed.\n * @param {boolean} setter wether a setter shoould be allowed or not\n */\nvar defineLazyProperty = function defineLazyProperty(obj, key, getValue, setter) {\n if (setter === void 0) {\n setter = true;\n }\n\n var set = function set(value) {\n return Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n writable: true\n });\n };\n\n var options = {\n configurable: true,\n enumerable: true,\n get: function get() {\n var value = getValue();\n set(value);\n return value;\n }\n };\n\n if (setter) {\n options.set = set;\n }\n\n return Object.defineProperty(obj, key, options);\n};\n\n/**\n * HTML5 Media Controller - Wrapper for HTML5 Media API\n *\n * @mixes Tech~SourceHandlerAdditions\n * @extends Tech\n */\n\nvar Html5 = /*#__PURE__*/function (_Tech) {\n _inheritsLoose(Html5, _Tech);\n\n /**\n * Create an instance of this Tech.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} ready\n * Callback function to call when the `HTML5` Tech is ready.\n */\n function Html5(options, ready) {\n var _this;\n\n _this = _Tech.call(this, options, ready) || this;\n var source = options.source;\n var crossoriginTracks = false;\n _this.featuresVideoFrameCallback = _this.featuresVideoFrameCallback && _this.el_.tagName === 'VIDEO'; // Set the source if one is provided\n // 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)\n // 2) Check to see if the network state of the tag was failed at init, and if so, reset the source\n // anyway so the error gets fired.\n\n if (source && (_this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) {\n _this.setSource(source);\n } else {\n _this.handleLateInit_(_this.el_);\n } // setup sourceset after late sourceset/init\n\n\n if (options.enableSourceset) {\n _this.setupSourcesetHandling_();\n }\n\n _this.isScrubbing_ = false;\n\n if (_this.el_.hasChildNodes()) {\n var nodes = _this.el_.childNodes;\n var nodesLength = nodes.length;\n var removeNodes = [];\n\n while (nodesLength--) {\n var node = nodes[nodesLength];\n var nodeName = node.nodeName.toLowerCase();\n\n if (nodeName === 'track') {\n if (!_this.featuresNativeTextTracks) {\n // Empty video tag tracks so the built-in player doesn't use them also.\n // This may not be fast enough to stop HTML5 browsers from reading the tags\n // so we'll need to turn off any default tracks if we're manually doing\n // captions and subtitles. videoElement.textTracks\n removeNodes.push(node);\n } else {\n // store HTMLTrackElement and TextTrack to remote list\n _this.remoteTextTrackEls().addTrackElement_(node);\n\n _this.remoteTextTracks().addTrack(node.track);\n\n _this.textTracks().addTrack(node.track);\n\n if (!crossoriginTracks && !_this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) {\n crossoriginTracks = true;\n }\n }\n }\n }\n\n for (var i = 0; i < removeNodes.length; i++) {\n _this.el_.removeChild(removeNodes[i]);\n }\n }\n\n _this.proxyNativeTracks_();\n\n if (_this.featuresNativeTextTracks && crossoriginTracks) {\n log$1.warn('Text Tracks are being loaded from another origin but the crossorigin attribute isn\\'t used.\\n' + 'This may prevent text tracks from loading.');\n } // prevent iOS Safari from disabling metadata text tracks during native playback\n\n\n _this.restoreMetadataTracksInIOSNativePlayer_(); // Determine if native controls should be used\n // Our goal should be to get the custom controls on mobile solid everywhere\n // so we can remove this all together. Right now this will block custom\n // controls on touch enabled laptops like the Chrome Pixel\n\n\n if ((TOUCH_ENABLED || IS_IPHONE || IS_NATIVE_ANDROID) && options.nativeControlsForTouch === true) {\n _this.setControls(true);\n } // on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`\n // into a `fullscreenchange` event\n\n\n _this.proxyWebkitFullscreen_();\n\n _this.triggerReady();\n\n return _this;\n }\n /**\n * Dispose of `HTML5` media element and remove all tracks.\n */\n\n\n var _proto = Html5.prototype;\n\n _proto.dispose = function dispose() {\n if (this.el_ && this.el_.resetSourceset_) {\n this.el_.resetSourceset_();\n }\n\n Html5.disposeMediaElement(this.el_);\n this.options_ = null; // tech will handle clearing of the emulated track list\n\n _Tech.prototype.dispose.call(this);\n }\n /**\n * Modify the media element so that we can detect when\n * the source is changed. Fires `sourceset` just after the source has changed\n */\n ;\n\n _proto.setupSourcesetHandling_ = function setupSourcesetHandling_() {\n setupSourceset(this);\n }\n /**\n * When a captions track is enabled in the iOS Safari native player, all other\n * tracks are disabled (including metadata tracks), which nulls all of their\n * associated cue points. This will restore metadata tracks to their pre-fullscreen\n * state in those cases so that cue points are not needlessly lost.\n *\n * @private\n */\n ;\n\n _proto.restoreMetadataTracksInIOSNativePlayer_ = function restoreMetadataTracksInIOSNativePlayer_() {\n var textTracks = this.textTracks();\n var metadataTracksPreFullscreenState; // captures a snapshot of every metadata track's current state\n\n var takeMetadataTrackSnapshot = function takeMetadataTrackSnapshot() {\n metadataTracksPreFullscreenState = [];\n\n for (var i = 0; i < textTracks.length; i++) {\n var track = textTracks[i];\n\n if (track.kind === 'metadata') {\n metadataTracksPreFullscreenState.push({\n track: track,\n storedMode: track.mode\n });\n }\n }\n }; // snapshot each metadata track's initial state, and update the snapshot\n // each time there is a track 'change' event\n\n\n takeMetadataTrackSnapshot();\n textTracks.addEventListener('change', takeMetadataTrackSnapshot);\n this.on('dispose', function () {\n return textTracks.removeEventListener('change', takeMetadataTrackSnapshot);\n });\n\n var restoreTrackMode = function restoreTrackMode() {\n for (var i = 0; i < metadataTracksPreFullscreenState.length; i++) {\n var storedTrack = metadataTracksPreFullscreenState[i];\n\n if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {\n storedTrack.track.mode = storedTrack.storedMode;\n }\n } // we only want this handler to be executed on the first 'change' event\n\n\n textTracks.removeEventListener('change', restoreTrackMode);\n }; // when we enter fullscreen playback, stop updating the snapshot and\n // restore all track modes to their pre-fullscreen state\n\n\n this.on('webkitbeginfullscreen', function () {\n textTracks.removeEventListener('change', takeMetadataTrackSnapshot); // remove the listener before adding it just in case it wasn't previously removed\n\n textTracks.removeEventListener('change', restoreTrackMode);\n textTracks.addEventListener('change', restoreTrackMode);\n }); // start updating the snapshot again after leaving fullscreen\n\n this.on('webkitendfullscreen', function () {\n // remove the listener before adding it just in case it wasn't previously removed\n textTracks.removeEventListener('change', takeMetadataTrackSnapshot);\n textTracks.addEventListener('change', takeMetadataTrackSnapshot); // remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback\n\n textTracks.removeEventListener('change', restoreTrackMode);\n });\n }\n /**\n * Attempt to force override of tracks for the given type\n *\n * @param {string} type - Track type to override, possible values include 'Audio',\n * 'Video', and 'Text'.\n * @param {boolean} override - If set to true native audio/video will be overridden,\n * otherwise native audio/video will potentially be used.\n * @private\n */\n ;\n\n _proto.overrideNative_ = function overrideNative_(type, override) {\n var _this2 = this;\n\n // If there is no behavioral change don't add/remove listeners\n if (override !== this[\"featuresNative\" + type + \"Tracks\"]) {\n return;\n }\n\n var lowerCaseType = type.toLowerCase();\n\n if (this[lowerCaseType + \"TracksListeners_\"]) {\n Object.keys(this[lowerCaseType + \"TracksListeners_\"]).forEach(function (eventName) {\n var elTracks = _this2.el()[lowerCaseType + \"Tracks\"];\n\n elTracks.removeEventListener(eventName, _this2[lowerCaseType + \"TracksListeners_\"][eventName]);\n });\n }\n\n this[\"featuresNative\" + type + \"Tracks\"] = !override;\n this[lowerCaseType + \"TracksListeners_\"] = null;\n this.proxyNativeTracksForType_(lowerCaseType);\n }\n /**\n * Attempt to force override of native audio tracks.\n *\n * @param {boolean} override - If set to true native audio will be overridden,\n * otherwise native audio will potentially be used.\n */\n ;\n\n _proto.overrideNativeAudioTracks = function overrideNativeAudioTracks(override) {\n this.overrideNative_('Audio', override);\n }\n /**\n * Attempt to force override of native video tracks.\n *\n * @param {boolean} override - If set to true native video will be overridden,\n * otherwise native video will potentially be used.\n */\n ;\n\n _proto.overrideNativeVideoTracks = function overrideNativeVideoTracks(override) {\n this.overrideNative_('Video', override);\n }\n /**\n * Proxy native track list events for the given type to our track\n * lists if the browser we are playing in supports that type of track list.\n *\n * @param {string} name - Track type; values include 'audio', 'video', and 'text'\n * @private\n */\n ;\n\n _proto.proxyNativeTracksForType_ = function proxyNativeTracksForType_(name) {\n var _this3 = this;\n\n var props = NORMAL[name];\n var elTracks = this.el()[props.getterName];\n var techTracks = this[props.getterName]();\n\n if (!this[\"featuresNative\" + props.capitalName + \"Tracks\"] || !elTracks || !elTracks.addEventListener) {\n return;\n }\n\n var listeners = {\n change: function change(e) {\n var event = {\n type: 'change',\n target: techTracks,\n currentTarget: techTracks,\n srcElement: techTracks\n };\n techTracks.trigger(event); // if we are a text track change event, we should also notify the\n // remote text track list. This can potentially cause a false positive\n // if we were to get a change event on a non-remote track and\n // we triggered the event on the remote text track list which doesn't\n // contain that track. However, best practices mean looping through the\n // list of tracks and searching for the appropriate mode value, so,\n // this shouldn't pose an issue\n\n if (name === 'text') {\n _this3[REMOTE.remoteText.getterName]().trigger(event);\n }\n },\n addtrack: function addtrack(e) {\n techTracks.addTrack(e.track);\n },\n removetrack: function removetrack(e) {\n techTracks.removeTrack(e.track);\n }\n };\n\n var removeOldTracks = function removeOldTracks() {\n var removeTracks = [];\n\n for (var i = 0; i < techTracks.length; i++) {\n var found = false;\n\n for (var j = 0; j < elTracks.length; j++) {\n if (elTracks[j] === techTracks[i]) {\n found = true;\n break;\n }\n }\n\n if (!found) {\n removeTracks.push(techTracks[i]);\n }\n }\n\n while (removeTracks.length) {\n techTracks.removeTrack(removeTracks.shift());\n }\n };\n\n this[props.getterName + 'Listeners_'] = listeners;\n Object.keys(listeners).forEach(function (eventName) {\n var listener = listeners[eventName];\n elTracks.addEventListener(eventName, listener);\n\n _this3.on('dispose', function (e) {\n return elTracks.removeEventListener(eventName, listener);\n });\n }); // Remove (native) tracks that are not used anymore\n\n this.on('loadstart', removeOldTracks);\n this.on('dispose', function (e) {\n return _this3.off('loadstart', removeOldTracks);\n });\n }\n /**\n * Proxy all native track list events to our track lists if the browser we are playing\n * in supports that type of track list.\n *\n * @private\n */\n ;\n\n _proto.proxyNativeTracks_ = function proxyNativeTracks_() {\n var _this4 = this;\n\n NORMAL.names.forEach(function (name) {\n _this4.proxyNativeTracksForType_(name);\n });\n }\n /**\n * Create the `Html5` Tech's DOM element.\n *\n * @return {Element}\n * The element that gets created.\n */\n ;\n\n _proto.createEl = function createEl() {\n var el = this.options_.tag; // Check if this browser supports moving the element into the box.\n // On the iPhone video will break if you move the element,\n // So we have to create a brand new element.\n // If we ingested the player div, we do not need to move the media element.\n\n if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) {\n // If the original tag is still there, clone and remove it.\n if (el) {\n var clone = el.cloneNode(true);\n\n if (el.parentNode) {\n el.parentNode.insertBefore(clone, el);\n }\n\n Html5.disposeMediaElement(el);\n el = clone;\n } else {\n el = document.createElement('video'); // determine if native controls should be used\n\n var tagAttributes = this.options_.tag && getAttributes(this.options_.tag);\n var attributes = mergeOptions$3({}, tagAttributes);\n\n if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {\n delete attributes.controls;\n }\n\n setAttributes(el, assign(attributes, {\n id: this.options_.techId,\n \"class\": 'vjs-tech'\n }));\n }\n\n el.playerId = this.options_.playerId;\n }\n\n if (typeof this.options_.preload !== 'undefined') {\n setAttribute(el, 'preload', this.options_.preload);\n }\n\n if (this.options_.disablePictureInPicture !== undefined) {\n el.disablePictureInPicture = this.options_.disablePictureInPicture;\n } // Update specific tag settings, in case they were overridden\n // `autoplay` has to be *last* so that `muted` and `playsinline` are present\n // when iOS/Safari or other browsers attempt to autoplay.\n\n\n var settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];\n\n for (var i = 0; i < settingsAttrs.length; i++) {\n var attr = settingsAttrs[i];\n var value = this.options_[attr];\n\n if (typeof value !== 'undefined') {\n if (value) {\n setAttribute(el, attr, attr);\n } else {\n removeAttribute(el, attr);\n }\n\n el[attr] = value;\n }\n }\n\n return el;\n }\n /**\n * This will be triggered if the loadstart event has already fired, before videojs was\n * ready. Two known examples of when this can happen are:\n * 1. If we're loading the playback object after it has started loading\n * 2. The media is already playing the (often with autoplay on) then\n *\n * This function will fire another loadstart so that videojs can catchup.\n *\n * @fires Tech#loadstart\n *\n * @return {undefined}\n * returns nothing.\n */\n ;\n\n _proto.handleLateInit_ = function handleLateInit_(el) {\n if (el.networkState === 0 || el.networkState === 3) {\n // The video element hasn't started loading the source yet\n // or didn't find a source\n return;\n }\n\n if (el.readyState === 0) {\n // NetworkState is set synchronously BUT loadstart is fired at the\n // end of the current stack, usually before setInterval(fn, 0).\n // So at this point we know loadstart may have already fired or is\n // about to fire, and either way the player hasn't seen it yet.\n // We don't want to fire loadstart prematurely here and cause a\n // double loadstart so we'll wait and see if it happens between now\n // and the next loop, and fire it if not.\n // HOWEVER, we also want to make sure it fires before loadedmetadata\n // which could also happen between now and the next loop, so we'll\n // watch for that also.\n var loadstartFired = false;\n\n var setLoadstartFired = function setLoadstartFired() {\n loadstartFired = true;\n };\n\n this.on('loadstart', setLoadstartFired);\n\n var triggerLoadstart = function triggerLoadstart() {\n // We did miss the original loadstart. Make sure the player\n // sees loadstart before loadedmetadata\n if (!loadstartFired) {\n this.trigger('loadstart');\n }\n };\n\n this.on('loadedmetadata', triggerLoadstart);\n this.ready(function () {\n this.off('loadstart', setLoadstartFired);\n this.off('loadedmetadata', triggerLoadstart);\n\n if (!loadstartFired) {\n // We did miss the original native loadstart. Fire it now.\n this.trigger('loadstart');\n }\n });\n return;\n } // From here on we know that loadstart already fired and we missed it.\n // The other readyState events aren't as much of a problem if we double\n // them, so not going to go to as much trouble as loadstart to prevent\n // that unless we find reason to.\n\n\n var eventsToTrigger = ['loadstart']; // loadedmetadata: newly equal to HAVE_METADATA (1) or greater\n\n eventsToTrigger.push('loadedmetadata'); // loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater\n\n if (el.readyState >= 2) {\n eventsToTrigger.push('loadeddata');\n } // canplay: newly increased to HAVE_FUTURE_DATA (3) or greater\n\n\n if (el.readyState >= 3) {\n eventsToTrigger.push('canplay');\n } // canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)\n\n\n if (el.readyState >= 4) {\n eventsToTrigger.push('canplaythrough');\n } // We still need to give the player time to add event listeners\n\n\n this.ready(function () {\n eventsToTrigger.forEach(function (type) {\n this.trigger(type);\n }, this);\n });\n }\n /**\n * Set whether we are scrubbing or not.\n * This is used to decide whether we should use `fastSeek` or not.\n * `fastSeek` is used to provide trick play on Safari browsers.\n *\n * @param {boolean} isScrubbing\n * - true for we are currently scrubbing\n * - false for we are no longer scrubbing\n */\n ;\n\n _proto.setScrubbing = function setScrubbing(isScrubbing) {\n this.isScrubbing_ = isScrubbing;\n }\n /**\n * Get whether we are scrubbing or not.\n *\n * @return {boolean} isScrubbing\n * - true for we are currently scrubbing\n * - false for we are no longer scrubbing\n */\n ;\n\n _proto.scrubbing = function scrubbing() {\n return this.isScrubbing_;\n }\n /**\n * Set current time for the `HTML5` tech.\n *\n * @param {number} seconds\n * Set the current time of the media to this.\n */\n ;\n\n _proto.setCurrentTime = function setCurrentTime(seconds) {\n try {\n if (this.isScrubbing_ && this.el_.fastSeek && IS_ANY_SAFARI) {\n this.el_.fastSeek(seconds);\n } else {\n this.el_.currentTime = seconds;\n }\n } catch (e) {\n log$1(e, 'Video is not ready. (Video.js)'); // this.warning(VideoJS.warnings.videoNotReady);\n }\n }\n /**\n * Get the current duration of the HTML5 media element.\n *\n * @return {number}\n * The duration of the media or 0 if there is no duration.\n */\n ;\n\n _proto.duration = function duration() {\n var _this5 = this;\n\n // Android Chrome will report duration as Infinity for VOD HLS until after\n // playback has started, which triggers the live display erroneously.\n // Return NaN if playback has not started and trigger a durationupdate once\n // the duration can be reliably known.\n if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) {\n // Wait for the first `timeupdate` with currentTime > 0 - there may be\n // several with 0\n var checkProgress = function checkProgress() {\n if (_this5.el_.currentTime > 0) {\n // Trigger durationchange for genuinely live video\n if (_this5.el_.duration === Infinity) {\n _this5.trigger('durationchange');\n }\n\n _this5.off('timeupdate', checkProgress);\n }\n };\n\n this.on('timeupdate', checkProgress);\n return NaN;\n }\n\n return this.el_.duration || NaN;\n }\n /**\n * Get the current width of the HTML5 media element.\n *\n * @return {number}\n * The width of the HTML5 media element.\n */\n ;\n\n _proto.width = function width() {\n return this.el_.offsetWidth;\n }\n /**\n * Get the current height of the HTML5 media element.\n *\n * @return {number}\n * The height of the HTML5 media element.\n */\n ;\n\n _proto.height = function height() {\n return this.el_.offsetHeight;\n }\n /**\n * Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into\n * `fullscreenchange` event.\n *\n * @private\n * @fires fullscreenchange\n * @listens webkitendfullscreen\n * @listens webkitbeginfullscreen\n * @listens webkitbeginfullscreen\n */\n ;\n\n _proto.proxyWebkitFullscreen_ = function proxyWebkitFullscreen_() {\n var _this6 = this;\n\n if (!('webkitDisplayingFullscreen' in this.el_)) {\n return;\n }\n\n var endFn = function endFn() {\n this.trigger('fullscreenchange', {\n isFullscreen: false\n }); // Safari will sometimes set contols on the videoelement when existing fullscreen.\n\n if (this.el_.controls && !this.options_.nativeControlsForTouch && this.controls()) {\n this.el_.controls = false;\n }\n };\n\n var beginFn = function beginFn() {\n if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {\n this.one('webkitendfullscreen', endFn);\n this.trigger('fullscreenchange', {\n isFullscreen: true,\n // set a flag in case another tech triggers fullscreenchange\n nativeIOSFullscreen: true\n });\n }\n };\n\n this.on('webkitbeginfullscreen', beginFn);\n this.on('dispose', function () {\n _this6.off('webkitbeginfullscreen', beginFn);\n\n _this6.off('webkitendfullscreen', endFn);\n });\n }\n /**\n * Check if fullscreen is supported on the current playback device.\n *\n * @return {boolean}\n * - True if fullscreen is supported.\n * - False if fullscreen is not supported.\n */\n ;\n\n _proto.supportsFullScreen = function supportsFullScreen() {\n if (typeof this.el_.webkitEnterFullScreen === 'function') {\n var userAgent = window$1.navigator && window$1.navigator.userAgent || ''; // Seems to be broken in Chromium/Chrome && Safari in Leopard\n\n if (/Android/.test(userAgent) || !/Chrome|Mac OS X 10.5/.test(userAgent)) {\n return true;\n }\n }\n\n return false;\n }\n /**\n * Request that the `HTML5` Tech enter fullscreen.\n */\n ;\n\n _proto.enterFullScreen = function enterFullScreen() {\n var video = this.el_;\n\n if (video.paused && video.networkState <= video.HAVE_METADATA) {\n // attempt to prime the video element for programmatic access\n // this isn't necessary on the desktop but shouldn't hurt\n silencePromise(this.el_.play()); // playing and pausing synchronously during the transition to fullscreen\n // can get iOS ~6.1 devices into a play/pause loop\n\n this.setTimeout(function () {\n video.pause();\n\n try {\n video.webkitEnterFullScreen();\n } catch (e) {\n this.trigger('fullscreenerror', e);\n }\n }, 0);\n } else {\n try {\n video.webkitEnterFullScreen();\n } catch (e) {\n this.trigger('fullscreenerror', e);\n }\n }\n }\n /**\n * Request that the `HTML5` Tech exit fullscreen.\n */\n ;\n\n _proto.exitFullScreen = function exitFullScreen() {\n if (!this.el_.webkitDisplayingFullscreen) {\n this.trigger('fullscreenerror', new Error('The video is not fullscreen'));\n return;\n }\n\n this.el_.webkitExitFullScreen();\n }\n /**\n * Create a floating video window always on top of other windows so that users may\n * continue consuming media while they interact with other content sites, or\n * applications on their device.\n *\n * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n *\n * @return {Promise}\n * A promise with a Picture-in-Picture window.\n */\n ;\n\n _proto.requestPictureInPicture = function requestPictureInPicture() {\n return this.el_.requestPictureInPicture();\n }\n /**\n * Native requestVideoFrameCallback if supported by browser/tech, or fallback\n * Don't use rVCF on Safari when DRM is playing, as it doesn't fire\n * Needs to be checked later than the constructor\n * This will be a false positive for clear sources loaded after a Fairplay source\n *\n * @param {function} cb function to call\n * @return {number} id of request\n */\n ;\n\n _proto.requestVideoFrameCallback = function requestVideoFrameCallback(cb) {\n if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {\n return this.el_.requestVideoFrameCallback(cb);\n }\n\n return _Tech.prototype.requestVideoFrameCallback.call(this, cb);\n }\n /**\n * Native or fallback requestVideoFrameCallback\n *\n * @param {number} id request id to cancel\n */\n ;\n\n _proto.cancelVideoFrameCallback = function cancelVideoFrameCallback(id) {\n if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {\n this.el_.cancelVideoFrameCallback(id);\n } else {\n _Tech.prototype.cancelVideoFrameCallback.call(this, id);\n }\n }\n /**\n * A getter/setter for the `Html5` Tech's source object.\n * > Note: Please use {@link Html5#setSource}\n *\n * @param {Tech~SourceObject} [src]\n * The source object you want to set on the `HTML5` techs element.\n *\n * @return {Tech~SourceObject|undefined}\n * - The current source object when a source is not passed in.\n * - undefined when setting\n *\n * @deprecated Since version 5.\n */\n ;\n\n _proto.src = function src(_src) {\n if (_src === undefined) {\n return this.el_.src;\n } // Setting src through `src` instead of `setSrc` will be deprecated\n\n\n this.setSrc(_src);\n }\n /**\n * Reset the tech by removing all sources and then calling\n * {@link Html5.resetMediaElement}.\n */\n ;\n\n _proto.reset = function reset() {\n Html5.resetMediaElement(this.el_);\n }\n /**\n * Get the current source on the `HTML5` Tech. Falls back to returning the source from\n * the HTML5 media element.\n *\n * @return {Tech~SourceObject}\n * The current source object from the HTML5 tech. With a fallback to the\n * elements source.\n */\n ;\n\n _proto.currentSrc = function currentSrc() {\n if (this.currentSource_) {\n return this.currentSource_.src;\n }\n\n return this.el_.currentSrc;\n }\n /**\n * Set controls attribute for the HTML5 media Element.\n *\n * @param {string} val\n * Value to set the controls attribute to\n */\n ;\n\n _proto.setControls = function setControls(val) {\n this.el_.controls = !!val;\n }\n /**\n * Create and returns a remote {@link TextTrack} object.\n *\n * @param {string} kind\n * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n *\n * @param {string} [label]\n * Label to identify the text track\n *\n * @param {string} [language]\n * Two letter language abbreviation\n *\n * @return {TextTrack}\n * The TextTrack that gets created.\n */\n ;\n\n _proto.addTextTrack = function addTextTrack(kind, label, language) {\n if (!this.featuresNativeTextTracks) {\n return _Tech.prototype.addTextTrack.call(this, kind, label, language);\n }\n\n return this.el_.addTextTrack(kind, label, language);\n }\n /**\n * Creates either native TextTrack or an emulated TextTrack depending\n * on the value of `featuresNativeTextTracks`\n *\n * @param {Object} options\n * The object should contain the options to initialize the TextTrack with.\n *\n * @param {string} [options.kind]\n * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n *\n * @param {string} [options.label]\n * Label to identify the text track\n *\n * @param {string} [options.language]\n * Two letter language abbreviation.\n *\n * @param {boolean} [options.default]\n * Default this track to on.\n *\n * @param {string} [options.id]\n * The internal id to assign this track.\n *\n * @param {string} [options.src]\n * A source url for the track.\n *\n * @return {HTMLTrackElement}\n * The track element that gets created.\n */\n ;\n\n _proto.createRemoteTextTrack = function createRemoteTextTrack(options) {\n if (!this.featuresNativeTextTracks) {\n return _Tech.prototype.createRemoteTextTrack.call(this, options);\n }\n\n var htmlTrackElement = document.createElement('track');\n\n if (options.kind) {\n htmlTrackElement.kind = options.kind;\n }\n\n if (options.label) {\n htmlTrackElement.label = options.label;\n }\n\n if (options.language || options.srclang) {\n htmlTrackElement.srclang = options.language || options.srclang;\n }\n\n if (options[\"default\"]) {\n htmlTrackElement[\"default\"] = options[\"default\"];\n }\n\n if (options.id) {\n htmlTrackElement.id = options.id;\n }\n\n if (options.src) {\n htmlTrackElement.src = options.src;\n }\n\n return htmlTrackElement;\n }\n /**\n * Creates a remote text track object and returns an html track element.\n *\n * @param {Object} options The object should contain values for\n * kind, language, label, and src (location of the WebVTT file)\n * @param {boolean} [manualCleanup=true] if set to false, the TextTrack will be\n * automatically removed from the video element whenever the source changes\n * @return {HTMLTrackElement} An Html Track Element.\n * This can be an emulated {@link HTMLTrackElement} or a native one.\n * @deprecated The default value of the \"manualCleanup\" parameter will default\n * to \"false\" in upcoming versions of Video.js\n */\n ;\n\n _proto.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {\n var htmlTrackElement = _Tech.prototype.addRemoteTextTrack.call(this, options, manualCleanup);\n\n if (this.featuresNativeTextTracks) {\n this.el().appendChild(htmlTrackElement);\n }\n\n return htmlTrackElement;\n }\n /**\n * Remove remote `TextTrack` from `TextTrackList` object\n *\n * @param {TextTrack} track\n * `TextTrack` object to remove\n */\n ;\n\n _proto.removeRemoteTextTrack = function removeRemoteTextTrack(track) {\n _Tech.prototype.removeRemoteTextTrack.call(this, track);\n\n if (this.featuresNativeTextTracks) {\n var tracks = this.$$('track');\n var i = tracks.length;\n\n while (i--) {\n if (track === tracks[i] || track === tracks[i].track) {\n this.el().removeChild(tracks[i]);\n }\n }\n }\n }\n /**\n * Gets available media playback quality metrics as specified by the W3C's Media\n * Playback Quality API.\n *\n * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n *\n * @return {Object}\n * An object with supported media playback quality metrics\n */\n ;\n\n _proto.getVideoPlaybackQuality = function getVideoPlaybackQuality() {\n if (typeof this.el().getVideoPlaybackQuality === 'function') {\n return this.el().getVideoPlaybackQuality();\n }\n\n var videoPlaybackQuality = {};\n\n if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') {\n videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;\n videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;\n }\n\n if (window$1.performance && typeof window$1.performance.now === 'function') {\n videoPlaybackQuality.creationTime = window$1.performance.now();\n } else if (window$1.performance && window$1.performance.timing && typeof window$1.performance.timing.navigationStart === 'number') {\n videoPlaybackQuality.creationTime = window$1.Date.now() - window$1.performance.timing.navigationStart;\n }\n\n return videoPlaybackQuality;\n };\n\n return Html5;\n}(Tech);\n/* HTML5 Support Testing ---------------------------------------------------- */\n\n/**\n * Element for testing browser HTML5 media capabilities\n *\n * @type {Element}\n * @constant\n * @private\n */\n\n\ndefineLazyProperty(Html5, 'TEST_VID', function () {\n if (!isReal()) {\n return;\n }\n\n var video = document.createElement('video');\n var track = document.createElement('track');\n track.kind = 'captions';\n track.srclang = 'en';\n track.label = 'English';\n video.appendChild(track);\n return video;\n});\n/**\n * Check if HTML5 media is supported by this browser/device.\n *\n * @return {boolean}\n * - True if HTML5 media is supported.\n * - False if HTML5 media is not supported.\n */\n\nHtml5.isSupported = function () {\n // IE with no Media Player is a LIAR! (#984)\n try {\n Html5.TEST_VID.volume = 0.5;\n } catch (e) {\n return false;\n }\n\n return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);\n};\n/**\n * Check if the tech can support the given type\n *\n * @param {string} type\n * The mimetype to check\n * @return {string} 'probably', 'maybe', or '' (empty string)\n */\n\n\nHtml5.canPlayType = function (type) {\n return Html5.TEST_VID.canPlayType(type);\n};\n/**\n * Check if the tech can support the given source\n *\n * @param {Object} srcObj\n * The source object\n * @param {Object} options\n * The options passed to the tech\n * @return {string} 'probably', 'maybe', or '' (empty string)\n */\n\n\nHtml5.canPlaySource = function (srcObj, options) {\n return Html5.canPlayType(srcObj.type);\n};\n/**\n * Check if the volume can be changed in this browser/device.\n * Volume cannot be changed in a lot of mobile devices.\n * Specifically, it can't be changed from 1 on iOS.\n *\n * @return {boolean}\n * - True if volume can be controlled\n * - False otherwise\n */\n\n\nHtml5.canControlVolume = function () {\n // IE will error if Windows Media Player not installed #3315\n try {\n var volume = Html5.TEST_VID.volume;\n Html5.TEST_VID.volume = volume / 2 + 0.1;\n var canControl = volume !== Html5.TEST_VID.volume; // With the introduction of iOS 15, there are cases where the volume is read as\n // changed but reverts back to its original state at the start of the next tick.\n // To determine whether volume can be controlled on iOS,\n // a timeout is set and the volume is checked asynchronously.\n // Since `features` doesn't currently work asynchronously, the value is manually set.\n\n if (canControl && IS_IOS) {\n window$1.setTimeout(function () {\n if (Html5 && Html5.prototype) {\n Html5.prototype.featuresVolumeControl = volume !== Html5.TEST_VID.volume;\n }\n }); // default iOS to false, which will be updated in the timeout above.\n\n return false;\n }\n\n return canControl;\n } catch (e) {\n return false;\n }\n};\n/**\n * Check if the volume can be muted in this browser/device.\n * Some devices, e.g. iOS, don't allow changing volume\n * but permits muting/unmuting.\n *\n * @return {bolean}\n * - True if volume can be muted\n * - False otherwise\n */\n\n\nHtml5.canMuteVolume = function () {\n try {\n var muted = Html5.TEST_VID.muted; // in some versions of iOS muted property doesn't always\n // work, so we want to set both property and attribute\n\n Html5.TEST_VID.muted = !muted;\n\n if (Html5.TEST_VID.muted) {\n setAttribute(Html5.TEST_VID, 'muted', 'muted');\n } else {\n removeAttribute(Html5.TEST_VID, 'muted', 'muted');\n }\n\n return muted !== Html5.TEST_VID.muted;\n } catch (e) {\n return false;\n }\n};\n/**\n * Check if the playback rate can be changed in this browser/device.\n *\n * @return {boolean}\n * - True if playback rate can be controlled\n * - False otherwise\n */\n\n\nHtml5.canControlPlaybackRate = function () {\n // Playback rate API is implemented in Android Chrome, but doesn't do anything\n // https://github.com/videojs/video.js/issues/3180\n if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) {\n return false;\n } // IE will error if Windows Media Player not installed #3315\n\n\n try {\n var playbackRate = Html5.TEST_VID.playbackRate;\n Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1;\n return playbackRate !== Html5.TEST_VID.playbackRate;\n } catch (e) {\n return false;\n }\n};\n/**\n * Check if we can override a video/audio elements attributes, with\n * Object.defineProperty.\n *\n * @return {boolean}\n * - True if builtin attributes can be overridden\n * - False otherwise\n */\n\n\nHtml5.canOverrideAttributes = function () {\n // if we cannot overwrite the src/innerHTML property, there is no support\n // iOS 7 safari for instance cannot do this.\n try {\n var noop = function noop() {};\n\n Object.defineProperty(document.createElement('video'), 'src', {\n get: noop,\n set: noop\n });\n Object.defineProperty(document.createElement('audio'), 'src', {\n get: noop,\n set: noop\n });\n Object.defineProperty(document.createElement('video'), 'innerHTML', {\n get: noop,\n set: noop\n });\n Object.defineProperty(document.createElement('audio'), 'innerHTML', {\n get: noop,\n set: noop\n });\n } catch (e) {\n return false;\n }\n\n return true;\n};\n/**\n * Check to see if native `TextTrack`s are supported by this browser/device.\n *\n * @return {boolean}\n * - True if native `TextTrack`s are supported.\n * - False otherwise\n */\n\n\nHtml5.supportsNativeTextTracks = function () {\n return IS_ANY_SAFARI || IS_IOS && IS_CHROME;\n};\n/**\n * Check to see if native `VideoTrack`s are supported by this browser/device\n *\n * @return {boolean}\n * - True if native `VideoTrack`s are supported.\n * - False otherwise\n */\n\n\nHtml5.supportsNativeVideoTracks = function () {\n return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);\n};\n/**\n * Check to see if native `AudioTrack`s are supported by this browser/device\n *\n * @return {boolean}\n * - True if native `AudioTrack`s are supported.\n * - False otherwise\n */\n\n\nHtml5.supportsNativeAudioTracks = function () {\n return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);\n};\n/**\n * An array of events available on the Html5 tech.\n *\n * @private\n * @type {Array}\n */\n\n\nHtml5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange'];\n/**\n * Boolean indicating whether the `Tech` supports volume control.\n *\n * @type {boolean}\n * @default {@link Html5.canControlVolume}\n */\n\n/**\n * Boolean indicating whether the `Tech` supports muting volume.\n *\n * @type {bolean}\n * @default {@link Html5.canMuteVolume}\n */\n\n/**\n * Boolean indicating whether the `Tech` supports changing the speed at which the media\n * plays. Examples:\n * - Set player to play 2x (twice) as fast\n * - Set player to play 0.5x (half) as fast\n *\n * @type {boolean}\n * @default {@link Html5.canControlPlaybackRate}\n */\n\n/**\n * Boolean indicating whether the `Tech` supports the `sourceset` event.\n *\n * @type {boolean}\n * @default\n */\n\n/**\n * Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.\n *\n * @type {boolean}\n * @default {@link Html5.supportsNativeTextTracks}\n */\n\n/**\n * Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.\n *\n * @type {boolean}\n * @default {@link Html5.supportsNativeVideoTracks}\n */\n\n/**\n * Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.\n *\n * @type {boolean}\n * @default {@link Html5.supportsNativeAudioTracks}\n */\n\n[['featuresMuteControl', 'canMuteVolume'], ['featuresPlaybackRate', 'canControlPlaybackRate'], ['featuresSourceset', 'canOverrideAttributes'], ['featuresNativeTextTracks', 'supportsNativeTextTracks'], ['featuresNativeVideoTracks', 'supportsNativeVideoTracks'], ['featuresNativeAudioTracks', 'supportsNativeAudioTracks']].forEach(function (_ref) {\n var key = _ref[0],\n fn = _ref[1];\n defineLazyProperty(Html5.prototype, key, function () {\n return Html5[fn]();\n }, true);\n});\nHtml5.prototype.featuresVolumeControl = Html5.canControlVolume();\n/**\n * Boolean indicating whether the `HTML5` tech currently supports the media element\n * moving in the DOM. iOS breaks if you move the media element, so this is set this to\n * false there. Everywhere else this should be true.\n *\n * @type {boolean}\n * @default\n */\n\nHtml5.prototype.movingMediaElementInDOM = !IS_IOS; // TODO: Previous comment: No longer appears to be used. Can probably be removed.\n// Is this true?\n\n/**\n * Boolean indicating whether the `HTML5` tech currently supports automatic media resize\n * when going into fullscreen.\n *\n * @type {boolean}\n * @default\n */\n\nHtml5.prototype.featuresFullscreenResize = true;\n/**\n * Boolean indicating whether the `HTML5` tech currently supports the progress event.\n * If this is false, manual `progress` events will be triggered instead.\n *\n * @type {boolean}\n * @default\n */\n\nHtml5.prototype.featuresProgressEvents = true;\n/**\n * Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.\n * If this is false, manual `timeupdate` events will be triggered instead.\n *\n * @default\n */\n\nHtml5.prototype.featuresTimeupdateEvents = true;\n/**\n * Whether the HTML5 el supports `requestVideoFrameCallback`\n *\n * @type {boolean}\n */\n\nHtml5.prototype.featuresVideoFrameCallback = !!(Html5.TEST_VID && Html5.TEST_VID.requestVideoFrameCallback); // HTML5 Feature detection and Device Fixes --------------------------------- //\n\nvar canPlayType;\n\nHtml5.patchCanPlayType = function () {\n // Android 4.0 and above can play HLS to some extent but it reports being unable to do so\n // Firefox and Chrome report correctly\n if (ANDROID_VERSION >= 4.0 && !IS_FIREFOX && !IS_CHROME) {\n canPlayType = Html5.TEST_VID && Html5.TEST_VID.constructor.prototype.canPlayType;\n\n Html5.TEST_VID.constructor.prototype.canPlayType = function (type) {\n var mpegurlRE = /^application\\/(?:x-|vnd\\.apple\\.)mpegurl/i;\n\n if (type && mpegurlRE.test(type)) {\n return 'maybe';\n }\n\n return canPlayType.call(this, type);\n };\n }\n};\n\nHtml5.unpatchCanPlayType = function () {\n var r = Html5.TEST_VID.constructor.prototype.canPlayType;\n\n if (canPlayType) {\n Html5.TEST_VID.constructor.prototype.canPlayType = canPlayType;\n }\n\n return r;\n}; // by default, patch the media element\n\n\nHtml5.patchCanPlayType();\n\nHtml5.disposeMediaElement = function (el) {\n if (!el) {\n return;\n }\n\n if (el.parentNode) {\n el.parentNode.removeChild(el);\n } // remove any child track or source nodes to prevent their loading\n\n\n while (el.hasChildNodes()) {\n el.removeChild(el.firstChild);\n } // remove any src reference. not setting `src=''` because that causes a warning\n // in firefox\n\n\n el.removeAttribute('src'); // force the media element to update its loading state by calling load()\n // however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)\n\n if (typeof el.load === 'function') {\n // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)\n (function () {\n try {\n el.load();\n } catch (e) {// not supported\n }\n })();\n }\n};\n\nHtml5.resetMediaElement = function (el) {\n if (!el) {\n return;\n }\n\n var sources = el.querySelectorAll('source');\n var i = sources.length;\n\n while (i--) {\n el.removeChild(sources[i]);\n } // remove any src reference.\n // not setting `src=''` because that throws an error\n\n\n el.removeAttribute('src');\n\n if (typeof el.load === 'function') {\n // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)\n (function () {\n try {\n el.load();\n } catch (e) {// satisfy linter\n }\n })();\n }\n};\n/* Native HTML5 element property wrapping ----------------------------------- */\n// Wrap native boolean attributes with getters that check both property and attribute\n// The list is as followed:\n// muted, defaultMuted, autoplay, controls, loop, playsinline\n\n\n[\n/**\n * Get the value of `muted` from the media element. `muted` indicates\n * that the volume for the media should be set to silent. This does not actually change\n * the `volume` attribute.\n *\n * @method Html5#muted\n * @return {boolean}\n * - True if the value of `volume` should be ignored and the audio set to silent.\n * - False if the value of `volume` should be used.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}\n */\n'muted',\n/**\n * Get the value of `defaultMuted` from the media element. `defaultMuted` indicates\n * whether the media should start muted or not. Only changes the default state of the\n * media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the\n * current state.\n *\n * @method Html5#defaultMuted\n * @return {boolean}\n * - The value of `defaultMuted` from the media element.\n * - True indicates that the media should start muted.\n * - False indicates that the media should not start muted\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}\n */\n'defaultMuted',\n/**\n * Get the value of `autoplay` from the media element. `autoplay` indicates\n * that the media should start to play as soon as the page is ready.\n *\n * @method Html5#autoplay\n * @return {boolean}\n * - The value of `autoplay` from the media element.\n * - True indicates that the media should start as soon as the page loads.\n * - False indicates that the media should not start as soon as the page loads.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}\n */\n'autoplay',\n/**\n * Get the value of `controls` from the media element. `controls` indicates\n * whether the native media controls should be shown or hidden.\n *\n * @method Html5#controls\n * @return {boolean}\n * - The value of `controls` from the media element.\n * - True indicates that native controls should be showing.\n * - False indicates that native controls should be hidden.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}\n */\n'controls',\n/**\n * Get the value of `loop` from the media element. `loop` indicates\n * that the media should return to the start of the media and continue playing once\n * it reaches the end.\n *\n * @method Html5#loop\n * @return {boolean}\n * - The value of `loop` from the media element.\n * - True indicates that playback should seek back to start once\n * the end of a media is reached.\n * - False indicates that playback should not loop back to the start when the\n * end of the media is reached.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}\n */\n'loop',\n/**\n * Get the value of `playsinline` from the media element. `playsinline` indicates\n * to the browser that non-fullscreen playback is preferred when fullscreen\n * playback is the native default, such as in iOS Safari.\n *\n * @method Html5#playsinline\n * @return {boolean}\n * - The value of `playsinline` from the media element.\n * - True indicates that the media should play inline.\n * - False indicates that the media should not play inline.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n */\n'playsinline'].forEach(function (prop) {\n Html5.prototype[prop] = function () {\n return this.el_[prop] || this.el_.hasAttribute(prop);\n };\n}); // Wrap native boolean attributes with setters that set both property and attribute\n// The list is as followed:\n// setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline\n// setControls is special-cased above\n\n[\n/**\n * Set the value of `muted` on the media element. `muted` indicates that the current\n * audio level should be silent.\n *\n * @method Html5#setMuted\n * @param {boolean} muted\n * - True if the audio should be set to silent\n * - False otherwise\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}\n */\n'muted',\n/**\n * Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current\n * audio level should be silent, but will only effect the muted level on initial playback..\n *\n * @method Html5.prototype.setDefaultMuted\n * @param {boolean} defaultMuted\n * - True if the audio should be set to silent\n * - False otherwise\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}\n */\n'defaultMuted',\n/**\n * Set the value of `autoplay` on the media element. `autoplay` indicates\n * that the media should start to play as soon as the page is ready.\n *\n * @method Html5#setAutoplay\n * @param {boolean} autoplay\n * - True indicates that the media should start as soon as the page loads.\n * - False indicates that the media should not start as soon as the page loads.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}\n */\n'autoplay',\n/**\n * Set the value of `loop` on the media element. `loop` indicates\n * that the media should return to the start of the media and continue playing once\n * it reaches the end.\n *\n * @method Html5#setLoop\n * @param {boolean} loop\n * - True indicates that playback should seek back to start once\n * the end of a media is reached.\n * - False indicates that playback should not loop back to the start when the\n * end of the media is reached.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}\n */\n'loop',\n/**\n * Set the value of `playsinline` from the media element. `playsinline` indicates\n * to the browser that non-fullscreen playback is preferred when fullscreen\n * playback is the native default, such as in iOS Safari.\n *\n * @method Html5#setPlaysinline\n * @param {boolean} playsinline\n * - True indicates that the media should play inline.\n * - False indicates that the media should not play inline.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n */\n'playsinline'].forEach(function (prop) {\n Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {\n this.el_[prop] = v;\n\n if (v) {\n this.el_.setAttribute(prop, prop);\n } else {\n this.el_.removeAttribute(prop);\n }\n };\n}); // Wrap native properties with a getter\n// The list is as followed\n// paused, currentTime, buffered, volume, poster, preload, error, seeking\n// seekable, ended, playbackRate, defaultPlaybackRate, disablePictureInPicture\n// played, networkState, readyState, videoWidth, videoHeight, crossOrigin\n\n[\n/**\n * Get the value of `paused` from the media element. `paused` indicates whether the media element\n * is currently paused or not.\n *\n * @method Html5#paused\n * @return {boolean}\n * The value of `paused` from the media element.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}\n */\n'paused',\n/**\n * Get the value of `currentTime` from the media element. `currentTime` indicates\n * the current second that the media is at in playback.\n *\n * @method Html5#currentTime\n * @return {number}\n * The value of `currentTime` from the media element.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}\n */\n'currentTime',\n/**\n * Get the value of `buffered` from the media element. `buffered` is a `TimeRange`\n * object that represents the parts of the media that are already downloaded and\n * available for playback.\n *\n * @method Html5#buffered\n * @return {TimeRange}\n * The value of `buffered` from the media element.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}\n */\n'buffered',\n/**\n * Get the value of `volume` from the media element. `volume` indicates\n * the current playback volume of audio for a media. `volume` will be a value from 0\n * (silent) to 1 (loudest and default).\n *\n * @method Html5#volume\n * @return {number}\n * The value of `volume` from the media element. Value will be between 0-1.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}\n */\n'volume',\n/**\n * Get the value of `poster` from the media element. `poster` indicates\n * that the url of an image file that can/will be shown when no media data is available.\n *\n * @method Html5#poster\n * @return {string}\n * The value of `poster` from the media element. Value will be a url to an\n * image.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}\n */\n'poster',\n/**\n * Get the value of `preload` from the media element. `preload` indicates\n * what should download before the media is interacted with. It can have the following\n * values:\n * - none: nothing should be downloaded\n * - metadata: poster and the first few frames of the media may be downloaded to get\n * media dimensions and other metadata\n * - auto: allow the media and metadata for the media to be downloaded before\n * interaction\n *\n * @method Html5#preload\n * @return {string}\n * The value of `preload` from the media element. Will be 'none', 'metadata',\n * or 'auto'.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}\n */\n'preload',\n/**\n * Get the value of the `error` from the media element. `error` indicates any\n * MediaError that may have occurred during playback. If error returns null there is no\n * current error.\n *\n * @method Html5#error\n * @return {MediaError|null}\n * The value of `error` from the media element. Will be `MediaError` if there\n * is a current error and null otherwise.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}\n */\n'error',\n/**\n * Get the value of `seeking` from the media element. `seeking` indicates whether the\n * media is currently seeking to a new position or not.\n *\n * @method Html5#seeking\n * @return {boolean}\n * - The value of `seeking` from the media element.\n * - True indicates that the media is currently seeking to a new position.\n * - False indicates that the media is not seeking to a new position at this time.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}\n */\n'seeking',\n/**\n * Get the value of `seekable` from the media element. `seekable` returns a\n * `TimeRange` object indicating ranges of time that can currently be `seeked` to.\n *\n * @method Html5#seekable\n * @return {TimeRange}\n * The value of `seekable` from the media element. A `TimeRange` object\n * indicating the current ranges of time that can be seeked to.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}\n */\n'seekable',\n/**\n * Get the value of `ended` from the media element. `ended` indicates whether\n * the media has reached the end or not.\n *\n * @method Html5#ended\n * @return {boolean}\n * - The value of `ended` from the media element.\n * - True indicates that the media has ended.\n * - False indicates that the media has not ended.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}\n */\n'ended',\n/**\n * Get the value of `playbackRate` from the media element. `playbackRate` indicates\n * the rate at which the media is currently playing back. Examples:\n * - if playbackRate is set to 2, media will play twice as fast.\n * - if playbackRate is set to 0.5, media will play half as fast.\n *\n * @method Html5#playbackRate\n * @return {number}\n * The value of `playbackRate` from the media element. A number indicating\n * the current playback speed of the media, where 1 is normal speed.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n */\n'playbackRate',\n/**\n * Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates\n * the rate at which the media is currently playing back. This value will not indicate the current\n * `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.\n *\n * Examples:\n * - if defaultPlaybackRate is set to 2, media will play twice as fast.\n * - if defaultPlaybackRate is set to 0.5, media will play half as fast.\n *\n * @method Html5.prototype.defaultPlaybackRate\n * @return {number}\n * The value of `defaultPlaybackRate` from the media element. A number indicating\n * the current playback speed of the media, where 1 is normal speed.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n */\n'defaultPlaybackRate',\n/**\n * Get the value of 'disablePictureInPicture' from the video element.\n *\n * @method Html5#disablePictureInPicture\n * @return {boolean} value\n * - The value of `disablePictureInPicture` from the video element.\n * - True indicates that the video can't be played in Picture-In-Picture mode\n * - False indicates that the video can be played in Picture-In-Picture mode\n *\n * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}\n */\n'disablePictureInPicture',\n/**\n * Get the value of `played` from the media element. `played` returns a `TimeRange`\n * object representing points in the media timeline that have been played.\n *\n * @method Html5#played\n * @return {TimeRange}\n * The value of `played` from the media element. A `TimeRange` object indicating\n * the ranges of time that have been played.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}\n */\n'played',\n/**\n * Get the value of `networkState` from the media element. `networkState` indicates\n * the current network state. It returns an enumeration from the following list:\n * - 0: NETWORK_EMPTY\n * - 1: NETWORK_IDLE\n * - 2: NETWORK_LOADING\n * - 3: NETWORK_NO_SOURCE\n *\n * @method Html5#networkState\n * @return {number}\n * The value of `networkState` from the media element. This will be a number\n * from the list in the description.\n *\n * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}\n */\n'networkState',\n/**\n * Get the value of `readyState` from the media element. `readyState` indicates\n * the current state of the media element. It returns an enumeration from the\n * following list:\n * - 0: HAVE_NOTHING\n * - 1: HAVE_METADATA\n * - 2: HAVE_CURRENT_DATA\n * - 3: HAVE_FUTURE_DATA\n * - 4: HAVE_ENOUGH_DATA\n *\n * @method Html5#readyState\n * @return {number}\n * The value of `readyState` from the media element. This will be a number\n * from the list in the description.\n *\n * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}\n */\n'readyState',\n/**\n * Get the value of `videoWidth` from the video element. `videoWidth` indicates\n * the current width of the video in css pixels.\n *\n * @method Html5#videoWidth\n * @return {number}\n * The value of `videoWidth` from the video element. This will be a number\n * in css pixels.\n *\n * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}\n */\n'videoWidth',\n/**\n * Get the value of `videoHeight` from the video element. `videoHeight` indicates\n * the current height of the video in css pixels.\n *\n * @method Html5#videoHeight\n * @return {number}\n * The value of `videoHeight` from the video element. This will be a number\n * in css pixels.\n *\n * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}\n */\n'videoHeight',\n/**\n * Get the value of `crossOrigin` from the media element. `crossOrigin` indicates\n * to the browser that should sent the cookies along with the requests for the\n * different assets/playlists\n *\n * @method Html5#crossOrigin\n * @return {string}\n * - anonymous indicates that the media should not sent cookies.\n * - use-credentials indicates that the media should sent cookies along the requests.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}\n */\n'crossOrigin'].forEach(function (prop) {\n Html5.prototype[prop] = function () {\n return this.el_[prop];\n };\n}); // Wrap native properties with a setter in this format:\n// set + toTitleCase(name)\n// The list is as follows:\n// setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate,\n// setDisablePictureInPicture, setCrossOrigin\n\n[\n/**\n * Set the value of `volume` on the media element. `volume` indicates the current\n * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and\n * so on.\n *\n * @method Html5#setVolume\n * @param {number} percentAsDecimal\n * The volume percent as a decimal. Valid range is from 0-1.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}\n */\n'volume',\n/**\n * Set the value of `src` on the media element. `src` indicates the current\n * {@link Tech~SourceObject} for the media.\n *\n * @method Html5#setSrc\n * @param {Tech~SourceObject} src\n * The source object to set as the current source.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}\n */\n'src',\n/**\n * Set the value of `poster` on the media element. `poster` is the url to\n * an image file that can/will be shown when no media data is available.\n *\n * @method Html5#setPoster\n * @param {string} poster\n * The url to an image that should be used as the `poster` for the media\n * element.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}\n */\n'poster',\n/**\n * Set the value of `preload` on the media element. `preload` indicates\n * what should download before the media is interacted with. It can have the following\n * values:\n * - none: nothing should be downloaded\n * - metadata: poster and the first few frames of the media may be downloaded to get\n * media dimensions and other metadata\n * - auto: allow the media and metadata for the media to be downloaded before\n * interaction\n *\n * @method Html5#setPreload\n * @param {string} preload\n * The value of `preload` to set on the media element. Must be 'none', 'metadata',\n * or 'auto'.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}\n */\n'preload',\n/**\n * Set the value of `playbackRate` on the media element. `playbackRate` indicates\n * the rate at which the media should play back. Examples:\n * - if playbackRate is set to 2, media will play twice as fast.\n * - if playbackRate is set to 0.5, media will play half as fast.\n *\n * @method Html5#setPlaybackRate\n * @return {number}\n * The value of `playbackRate` from the media element. A number indicating\n * the current playback speed of the media, where 1 is normal speed.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n */\n'playbackRate',\n/**\n * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates\n * the rate at which the media should play back upon initial startup. Changing this value\n * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.\n *\n * Example Values:\n * - if playbackRate is set to 2, media will play twice as fast.\n * - if playbackRate is set to 0.5, media will play half as fast.\n *\n * @method Html5.prototype.setDefaultPlaybackRate\n * @return {number}\n * The value of `defaultPlaybackRate` from the media element. A number indicating\n * the current playback speed of the media, where 1 is normal speed.\n *\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}\n */\n'defaultPlaybackRate',\n/**\n * Prevents the browser from suggesting a Picture-in-Picture context menu\n * or to request Picture-in-Picture automatically in some cases.\n *\n * @method Html5#setDisablePictureInPicture\n * @param {boolean} value\n * The true value will disable Picture-in-Picture mode.\n *\n * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}\n */\n'disablePictureInPicture',\n/**\n * Set the value of `crossOrigin` from the media element. `crossOrigin` indicates\n * to the browser that should sent the cookies along with the requests for the\n * different assets/playlists\n *\n * @method Html5#setCrossOrigin\n * @param {string} crossOrigin\n * - anonymous indicates that the media should not sent cookies.\n * - use-credentials indicates that the media should sent cookies along the requests.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}\n */\n'crossOrigin'].forEach(function (prop) {\n Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {\n this.el_[prop] = v;\n };\n}); // wrap native functions with a function\n// The list is as follows:\n// pause, load, play\n\n[\n/**\n * A wrapper around the media elements `pause` function. This will call the `HTML5`\n * media elements `pause` function.\n *\n * @method Html5#pause\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}\n */\n'pause',\n/**\n * A wrapper around the media elements `load` function. This will call the `HTML5`s\n * media element `load` function.\n *\n * @method Html5#load\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}\n */\n'load',\n/**\n * A wrapper around the media elements `play` function. This will call the `HTML5`s\n * media element `play` function.\n *\n * @method Html5#play\n * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}\n */\n'play'].forEach(function (prop) {\n Html5.prototype[prop] = function () {\n return this.el_[prop]();\n };\n});\nTech.withSourceHandlers(Html5);\n/**\n * Native source handler for Html5, simply passes the source to the media element.\n *\n * @property {Tech~SourceObject} source\n * The source object\n *\n * @property {Html5} tech\n * The instance of the HTML5 tech.\n */\n\nHtml5.nativeSourceHandler = {};\n/**\n * Check if the media element can play the given mime type.\n *\n * @param {string} type\n * The mimetype to check\n *\n * @return {string}\n * 'probably', 'maybe', or '' (empty string)\n */\n\nHtml5.nativeSourceHandler.canPlayType = function (type) {\n // IE without MediaPlayer throws an error (#519)\n try {\n return Html5.TEST_VID.canPlayType(type);\n } catch (e) {\n return '';\n }\n};\n/**\n * Check if the media element can handle a source natively.\n *\n * @param {Tech~SourceObject} source\n * The source object\n *\n * @param {Object} [options]\n * Options to be passed to the tech.\n *\n * @return {string}\n * 'probably', 'maybe', or '' (empty string).\n */\n\n\nHtml5.nativeSourceHandler.canHandleSource = function (source, options) {\n // If a type was provided we should rely on that\n if (source.type) {\n return Html5.nativeSourceHandler.canPlayType(source.type); // If no type, fall back to checking 'video/[EXTENSION]'\n } else if (source.src) {\n var ext = getFileExtension(source.src);\n return Html5.nativeSourceHandler.canPlayType(\"video/\" + ext);\n }\n\n return '';\n};\n/**\n * Pass the source to the native media element.\n *\n * @param {Tech~SourceObject} source\n * The source object\n *\n * @param {Html5} tech\n * The instance of the Html5 tech\n *\n * @param {Object} [options]\n * The options to pass to the source\n */\n\n\nHtml5.nativeSourceHandler.handleSource = function (source, tech, options) {\n tech.setSrc(source.src);\n};\n/**\n * A noop for the native dispose function, as cleanup is not needed.\n */\n\n\nHtml5.nativeSourceHandler.dispose = function () {}; // Register the native source handler\n\n\nHtml5.registerSourceHandler(Html5.nativeSourceHandler);\nTech.registerTech('Html5', Html5);\n\n// on the player when they happen\n\nvar TECH_EVENTS_RETRIGGER = [\n/**\n * Fired while the user agent is downloading media data.\n *\n * @event Player#progress\n * @type {EventTarget~Event}\n */\n\n/**\n * Retrigger the `progress` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechProgress_\n * @fires Player#progress\n * @listens Tech#progress\n */\n'progress',\n/**\n * Fires when the loading of an audio/video is aborted.\n *\n * @event Player#abort\n * @type {EventTarget~Event}\n */\n\n/**\n * Retrigger the `abort` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechAbort_\n * @fires Player#abort\n * @listens Tech#abort\n */\n'abort',\n/**\n * Fires when the browser is intentionally not getting media data.\n *\n * @event Player#suspend\n * @type {EventTarget~Event}\n */\n\n/**\n * Retrigger the `suspend` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechSuspend_\n * @fires Player#suspend\n * @listens Tech#suspend\n */\n'suspend',\n/**\n * Fires when the current playlist is empty.\n *\n * @event Player#emptied\n * @type {EventTarget~Event}\n */\n\n/**\n * Retrigger the `emptied` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechEmptied_\n * @fires Player#emptied\n * @listens Tech#emptied\n */\n'emptied',\n/**\n * Fires when the browser is trying to get media data, but data is not available.\n *\n * @event Player#stalled\n * @type {EventTarget~Event}\n */\n\n/**\n * Retrigger the `stalled` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechStalled_\n * @fires Player#stalled\n * @listens Tech#stalled\n */\n'stalled',\n/**\n * Fires when the browser has loaded meta data for the audio/video.\n *\n * @event Player#loadedmetadata\n * @type {EventTarget~Event}\n */\n\n/**\n * Retrigger the `loadedmetadata` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechLoadedmetadata_\n * @fires Player#loadedmetadata\n * @listens Tech#loadedmetadata\n */\n'loadedmetadata',\n/**\n * Fires when the browser has loaded the current frame of the audio/video.\n *\n * @event Player#loadeddata\n * @type {event}\n */\n\n/**\n * Retrigger the `loadeddata` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechLoaddeddata_\n * @fires Player#loadeddata\n * @listens Tech#loadeddata\n */\n'loadeddata',\n/**\n * Fires when the current playback position has changed.\n *\n * @event Player#timeupdate\n * @type {event}\n */\n\n/**\n * Retrigger the `timeupdate` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechTimeUpdate_\n * @fires Player#timeupdate\n * @listens Tech#timeupdate\n */\n'timeupdate',\n/**\n * Fires when the video's intrinsic dimensions change\n *\n * @event Player#resize\n * @type {event}\n */\n\n/**\n * Retrigger the `resize` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechResize_\n * @fires Player#resize\n * @listens Tech#resize\n */\n'resize',\n/**\n * Fires when the volume has been changed\n *\n * @event Player#volumechange\n * @type {event}\n */\n\n/**\n * Retrigger the `volumechange` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechVolumechange_\n * @fires Player#volumechange\n * @listens Tech#volumechange\n */\n'volumechange',\n/**\n * Fires when the text track has been changed\n *\n * @event Player#texttrackchange\n * @type {event}\n */\n\n/**\n * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}.\n *\n * @private\n * @method Player#handleTechTexttrackchange_\n * @fires Player#texttrackchange\n * @listens Tech#texttrackchange\n */\n'texttrackchange']; // events to queue when playback rate is zero\n// this is a hash for the sole purpose of mapping non-camel-cased event names\n// to camel-cased function names\n\nvar TECH_EVENTS_QUEUE = {\n canplay: 'CanPlay',\n canplaythrough: 'CanPlayThrough',\n playing: 'Playing',\n seeked: 'Seeked'\n};\nvar BREAKPOINT_ORDER = ['tiny', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'huge'];\nvar BREAKPOINT_CLASSES = {}; // grep: vjs-layout-tiny\n// grep: vjs-layout-x-small\n// grep: vjs-layout-small\n// grep: vjs-layout-medium\n// grep: vjs-layout-large\n// grep: vjs-layout-x-large\n// grep: vjs-layout-huge\n\nBREAKPOINT_ORDER.forEach(function (k) {\n var v = k.charAt(0) === 'x' ? \"x-\" + k.substring(1) : k;\n BREAKPOINT_CLASSES[k] = \"vjs-layout-\" + v;\n});\nvar DEFAULT_BREAKPOINTS = {\n tiny: 210,\n xsmall: 320,\n small: 425,\n medium: 768,\n large: 1440,\n xlarge: 2560,\n huge: Infinity\n};\n/**\n * An instance of the `Player` class is created when any of the Video.js setup methods\n * are used to initialize a video.\n *\n * After an instance has been created it can be accessed globally in two ways:\n * 1. By calling `videojs('example_video_1');`\n * 2. By using it directly via `videojs.players.example_video_1;`\n *\n * @extends Component\n */\n\nvar Player = /*#__PURE__*/function (_Component) {\n _inheritsLoose(Player, _Component);\n\n /**\n * Create an instance of this class.\n *\n * @param {Element} tag\n * The original video DOM element used for configuring options.\n *\n * @param {Object} [options]\n * Object of option names and values.\n *\n * @param {Component~ReadyCallback} [ready]\n * Ready callback function.\n */\n function Player(tag, options, ready) {\n var _this;\n\n // Make sure tag ID exists\n tag.id = tag.id || options.id || \"vjs_video_\" + newGUID(); // Set Options\n // The options argument overrides options set in the video tag\n // which overrides globally set options.\n // This latter part coincides with the load order\n // (tag must exist before Player)\n\n options = assign(Player.getTagSettings(tag), options); // Delay the initialization of children because we need to set up\n // player properties first, and can't use `this` before `super()`\n\n options.initChildren = false; // Same with creating the element\n\n options.createEl = false; // don't auto mixin the evented mixin\n\n options.evented = false; // we don't want the player to report touch activity on itself\n // see enableTouchActivity in Component\n\n options.reportTouchActivity = false; // If language is not set, get the closest lang attribute\n\n if (!options.language) {\n if (typeof tag.closest === 'function') {\n var closest = tag.closest('[lang]');\n\n if (closest && closest.getAttribute) {\n options.language = closest.getAttribute('lang');\n }\n } else {\n var element = tag;\n\n while (element && element.nodeType === 1) {\n if (getAttributes(element).hasOwnProperty('lang')) {\n options.language = element.getAttribute('lang');\n break;\n }\n\n element = element.parentNode;\n }\n }\n } // Run base component initializing with new options\n\n\n _this = _Component.call(this, null, options, ready) || this; // Create bound methods for document listeners.\n\n _this.boundDocumentFullscreenChange_ = function (e) {\n return _this.documentFullscreenChange_(e);\n };\n\n _this.boundFullWindowOnEscKey_ = function (e) {\n return _this.fullWindowOnEscKey(e);\n };\n\n _this.boundUpdateStyleEl_ = function (e) {\n return _this.updateStyleEl_(e);\n };\n\n _this.boundApplyInitTime_ = function (e) {\n return _this.applyInitTime_(e);\n };\n\n _this.boundUpdateCurrentBreakpoint_ = function (e) {\n return _this.updateCurrentBreakpoint_(e);\n };\n\n _this.boundHandleTechClick_ = function (e) {\n return _this.handleTechClick_(e);\n };\n\n _this.boundHandleTechDoubleClick_ = function (e) {\n return _this.handleTechDoubleClick_(e);\n };\n\n _this.boundHandleTechTouchStart_ = function (e) {\n return _this.handleTechTouchStart_(e);\n };\n\n _this.boundHandleTechTouchMove_ = function (e) {\n return _this.handleTechTouchMove_(e);\n };\n\n _this.boundHandleTechTouchEnd_ = function (e) {\n return _this.handleTechTouchEnd_(e);\n };\n\n _this.boundHandleTechTap_ = function (e) {\n return _this.handleTechTap_(e);\n }; // default isFullscreen_ to false\n\n\n _this.isFullscreen_ = false; // create logger\n\n _this.log = createLogger(_this.id_); // Hold our own reference to fullscreen api so it can be mocked in tests\n\n _this.fsApi_ = FullscreenApi; // Tracks when a tech changes the poster\n\n _this.isPosterFromTech_ = false; // Holds callback info that gets queued when playback rate is zero\n // and a seek is happening\n\n _this.queuedCallbacks_ = []; // Turn off API access because we're loading a new tech that might load asynchronously\n\n _this.isReady_ = false; // Init state hasStarted_\n\n _this.hasStarted_ = false; // Init state userActive_\n\n _this.userActive_ = false; // Init debugEnabled_\n\n _this.debugEnabled_ = false; // Init state audioOnlyMode_\n\n _this.audioOnlyMode_ = false; // Init state audioPosterMode_\n\n _this.audioPosterMode_ = false; // Init state audioOnlyCache_\n\n _this.audioOnlyCache_ = {\n playerHeight: null,\n hiddenChildren: []\n }; // if the global option object was accidentally blown away by\n // someone, bail early with an informative error\n\n if (!_this.options_ || !_this.options_.techOrder || !_this.options_.techOrder.length) {\n throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?');\n } // Store the original tag used to set options\n\n\n _this.tag = tag; // Store the tag attributes used to restore html5 element\n\n _this.tagAttributes = tag && getAttributes(tag); // Update current language\n\n _this.language(_this.options_.language); // Update Supported Languages\n\n\n if (options.languages) {\n // Normalise player option languages to lowercase\n var languagesToLower = {};\n Object.getOwnPropertyNames(options.languages).forEach(function (name) {\n languagesToLower[name.toLowerCase()] = options.languages[name];\n });\n _this.languages_ = languagesToLower;\n } else {\n _this.languages_ = Player.prototype.options_.languages;\n }\n\n _this.resetCache_(); // Set poster\n\n\n _this.poster_ = options.poster || ''; // Set controls\n\n _this.controls_ = !!options.controls; // Original tag settings stored in options\n // now remove immediately so native controls don't flash.\n // May be turned back on by HTML5 tech if nativeControlsForTouch is true\n\n tag.controls = false;\n tag.removeAttribute('controls');\n _this.changingSrc_ = false;\n _this.playCallbacks_ = [];\n _this.playTerminatedQueue_ = []; // the attribute overrides the option\n\n if (tag.hasAttribute('autoplay')) {\n _this.autoplay(true);\n } else {\n // otherwise use the setter to validate and\n // set the correct value.\n _this.autoplay(_this.options_.autoplay);\n } // check plugins\n\n\n if (options.plugins) {\n Object.keys(options.plugins).forEach(function (name) {\n if (typeof _this[name] !== 'function') {\n throw new Error(\"plugin \\\"\" + name + \"\\\" does not exist\");\n }\n });\n }\n /*\n * Store the internal state of scrubbing\n *\n * @private\n * @return {Boolean} True if the user is scrubbing\n */\n\n\n _this.scrubbing_ = false;\n _this.el_ = _this.createEl(); // Make this an evented object and use `el_` as its event bus.\n\n evented(_assertThisInitialized(_this), {\n eventBusKey: 'el_'\n }); // listen to document and player fullscreenchange handlers so we receive those events\n // before a user can receive them so we can update isFullscreen appropriately.\n // make sure that we listen to fullscreenchange events before everything else to make sure that\n // our isFullscreen method is updated properly for internal components as well as external.\n\n if (_this.fsApi_.requestFullscreen) {\n on(document, _this.fsApi_.fullscreenchange, _this.boundDocumentFullscreenChange_);\n\n _this.on(_this.fsApi_.fullscreenchange, _this.boundDocumentFullscreenChange_);\n }\n\n if (_this.fluid_) {\n _this.on(['playerreset', 'resize'], _this.boundUpdateStyleEl_);\n } // We also want to pass the original player options to each component and plugin\n // as well so they don't need to reach back into the player for options later.\n // We also need to do another copy of this.options_ so we don't end up with\n // an infinite loop.\n\n\n var playerOptionsCopy = mergeOptions$3(_this.options_); // Load plugins\n\n if (options.plugins) {\n Object.keys(options.plugins).forEach(function (name) {\n _this[name](options.plugins[name]);\n });\n } // Enable debug mode to fire debugon event for all plugins.\n\n\n if (options.debug) {\n _this.debug(true);\n }\n\n _this.options_.playerOptions = playerOptionsCopy;\n _this.middleware_ = [];\n\n _this.playbackRates(options.playbackRates);\n\n _this.initChildren(); // Set isAudio based on whether or not an audio tag was used\n\n\n _this.isAudio(tag.nodeName.toLowerCase() === 'audio'); // Update controls className. Can't do this when the controls are initially\n // set because the element doesn't exist yet.\n\n\n if (_this.controls()) {\n _this.addClass('vjs-controls-enabled');\n } else {\n _this.addClass('vjs-controls-disabled');\n } // Set ARIA label and region role depending on player type\n\n\n _this.el_.setAttribute('role', 'region');\n\n if (_this.isAudio()) {\n _this.el_.setAttribute('aria-label', _this.localize('Audio Player'));\n } else {\n _this.el_.setAttribute('aria-label', _this.localize('Video Player'));\n }\n\n if (_this.isAudio()) {\n _this.addClass('vjs-audio');\n }\n\n if (_this.flexNotSupported_()) {\n _this.addClass('vjs-no-flex');\n } // TODO: Make this smarter. Toggle user state between touching/mousing\n // using events, since devices can have both touch and mouse events.\n // TODO: Make this check be performed again when the window switches between monitors\n // (See https://github.com/videojs/video.js/issues/5683)\n\n\n if (TOUCH_ENABLED) {\n _this.addClass('vjs-touch-enabled');\n } // iOS Safari has broken hover handling\n\n\n if (!IS_IOS) {\n _this.addClass('vjs-workinghover');\n } // Make player easily findable by ID\n\n\n Player.players[_this.id_] = _assertThisInitialized(_this); // Add a major version class to aid css in plugins\n\n var majorVersion = version$5.split('.')[0];\n\n _this.addClass(\"vjs-v\" + majorVersion); // When the player is first initialized, trigger activity so components\n // like the control bar show themselves if needed\n\n\n _this.userActive(true);\n\n _this.reportUserActivity();\n\n _this.one('play', function (e) {\n return _this.listenForUserActivity_(e);\n });\n\n _this.on('stageclick', function (e) {\n return _this.handleStageClick_(e);\n });\n\n _this.on('keydown', function (e) {\n return _this.handleKeyDown(e);\n });\n\n _this.on('languagechange', function (e) {\n return _this.handleLanguagechange(e);\n });\n\n _this.breakpoints(_this.options_.breakpoints);\n\n _this.responsive(_this.options_.responsive); // Calling both the audio mode methods after the player is fully\n // setup to be able to listen to the events triggered by them\n\n\n _this.on('ready', function () {\n // Calling the audioPosterMode method first so that\n // the audioOnlyMode can take precedence when both options are set to true\n _this.audioPosterMode(_this.options_.audioPosterMode);\n\n _this.audioOnlyMode(_this.options_.audioOnlyMode);\n });\n\n return _this;\n }\n /**\n * Destroys the video player and does any necessary cleanup.\n *\n * This is especially helpful if you are dynamically adding and removing videos\n * to/from the DOM.\n *\n * @fires Player#dispose\n */\n\n\n var _proto = Player.prototype;\n\n _proto.dispose = function dispose() {\n var _this2 = this;\n\n /**\n * Called when the player is being disposed of.\n *\n * @event Player#dispose\n * @type {EventTarget~Event}\n */\n this.trigger('dispose'); // prevent dispose from being called twice\n\n this.off('dispose'); // Make sure all player-specific document listeners are unbound. This is\n\n off(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);\n off(document, 'keydown', this.boundFullWindowOnEscKey_);\n\n if (this.styleEl_ && this.styleEl_.parentNode) {\n this.styleEl_.parentNode.removeChild(this.styleEl_);\n this.styleEl_ = null;\n } // Kill reference to this player\n\n\n Player.players[this.id_] = null;\n\n if (this.tag && this.tag.player) {\n this.tag.player = null;\n }\n\n if (this.el_ && this.el_.player) {\n this.el_.player = null;\n }\n\n if (this.tech_) {\n this.tech_.dispose();\n this.isPosterFromTech_ = false;\n this.poster_ = '';\n }\n\n if (this.playerElIngest_) {\n this.playerElIngest_ = null;\n }\n\n if (this.tag) {\n this.tag = null;\n }\n\n clearCacheForPlayer(this); // remove all event handlers for track lists\n // all tracks and track listeners are removed on\n // tech dispose\n\n ALL.names.forEach(function (name) {\n var props = ALL[name];\n\n var list = _this2[props.getterName](); // if it is not a native list\n // we have to manually remove event listeners\n\n\n if (list && list.off) {\n list.off();\n }\n }); // the actual .el_ is removed here, or replaced if\n\n _Component.prototype.dispose.call(this, {\n restoreEl: this.options_.restoreEl\n });\n }\n /**\n * Create the `Player`'s DOM element.\n *\n * @return {Element}\n * The DOM element that gets created.\n */\n ;\n\n _proto.createEl = function createEl() {\n var tag = this.tag;\n var el;\n var playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player');\n var divEmbed = this.tag.tagName.toLowerCase() === 'video-js';\n\n if (playerElIngest) {\n el = this.el_ = tag.parentNode;\n } else if (!divEmbed) {\n el = this.el_ = _Component.prototype.createEl.call(this, 'div');\n } // Copy over all the attributes from the tag, including ID and class\n // ID will now reference player box, not the video tag\n\n\n var attrs = getAttributes(tag);\n\n if (divEmbed) {\n el = this.el_ = tag;\n tag = this.tag = document.createElement('video');\n\n while (el.children.length) {\n tag.appendChild(el.firstChild);\n }\n\n if (!hasClass(el, 'video-js')) {\n addClass(el, 'video-js');\n }\n\n el.appendChild(tag);\n playerElIngest = this.playerElIngest_ = el; // move properties over from our custom `video-js` element\n // to our new `video` element. This will move things like\n // `src` or `controls` that were set via js before the player\n // was initialized.\n\n Object.keys(el).forEach(function (k) {\n try {\n tag[k] = el[k];\n } catch (e) {// we got a a property like outerHTML which we can't actually copy, ignore it\n }\n });\n } // set tabindex to -1 to remove the video element from the focus order\n\n\n tag.setAttribute('tabindex', '-1');\n attrs.tabindex = '-1'; // Workaround for #4583 (JAWS+IE doesn't announce BPB or play button), and\n // for the same issue with Chrome (on Windows) with JAWS.\n // See https://github.com/FreedomScientific/VFO-standards-support/issues/78\n // Note that we can't detect if JAWS is being used, but this ARIA attribute\n // doesn't change behavior of IE11 or Chrome if JAWS is not being used\n\n if (IE_VERSION || IS_CHROME && IS_WINDOWS) {\n tag.setAttribute('role', 'application');\n attrs.role = 'application';\n } // Remove width/height attrs from tag so CSS can make it 100% width/height\n\n\n tag.removeAttribute('width');\n tag.removeAttribute('height');\n\n if ('width' in attrs) {\n delete attrs.width;\n }\n\n if ('height' in attrs) {\n delete attrs.height;\n }\n\n Object.getOwnPropertyNames(attrs).forEach(function (attr) {\n // don't copy over the class attribute to the player element when we're in a div embed\n // the class is already set up properly in the divEmbed case\n // and we want to make sure that the `video-js` class doesn't get lost\n if (!(divEmbed && attr === 'class')) {\n el.setAttribute(attr, attrs[attr]);\n }\n\n if (divEmbed) {\n tag.setAttribute(attr, attrs[attr]);\n }\n }); // Update tag id/class for use as HTML5 playback tech\n // Might think we should do this after embedding in container so .vjs-tech class\n // doesn't flash 100% width/height, but class only applies with .video-js parent\n\n tag.playerId = tag.id;\n tag.id += '_html5_api';\n tag.className = 'vjs-tech'; // Make player findable on elements\n\n tag.player = el.player = this; // Default state of video is paused\n\n this.addClass('vjs-paused'); // Add a style element in the player that we'll use to set the width/height\n // of the player in a way that's still overrideable by CSS, just like the\n // video element\n\n if (window$1.VIDEOJS_NO_DYNAMIC_STYLE !== true) {\n this.styleEl_ = createStyleElement('vjs-styles-dimensions');\n var defaultsStyleEl = $('.vjs-styles-defaults');\n var head = $('head');\n head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild);\n }\n\n this.fill_ = false;\n this.fluid_ = false; // Pass in the width/height/aspectRatio options which will update the style el\n\n this.width(this.options_.width);\n this.height(this.options_.height);\n this.fill(this.options_.fill);\n this.fluid(this.options_.fluid);\n this.aspectRatio(this.options_.aspectRatio); // support both crossOrigin and crossorigin to reduce confusion and issues around the name\n\n this.crossOrigin(this.options_.crossOrigin || this.options_.crossorigin); // Hide any links within the video/audio tag,\n // because IE doesn't hide them completely from screen readers.\n\n var links = tag.getElementsByTagName('a');\n\n for (var i = 0; i < links.length; i++) {\n var linkEl = links.item(i);\n addClass(linkEl, 'vjs-hidden');\n linkEl.setAttribute('hidden', 'hidden');\n } // insertElFirst seems to cause the networkState to flicker from 3 to 2, so\n // keep track of the original for later so we can know if the source originally failed\n\n\n tag.initNetworkState_ = tag.networkState; // Wrap video tag in div (el/box) container\n\n if (tag.parentNode && !playerElIngest) {\n tag.parentNode.insertBefore(el, tag);\n } // insert the tag as the first child of the player element\n // then manually add it to the children array so that this.addChild\n // will work properly for other components\n //\n // Breaks iPhone, fixed in HTML5 setup.\n\n\n prependTo(tag, el);\n this.children_.unshift(tag); // Set lang attr on player to ensure CSS :lang() in consistent with player\n // if it's been set to something different to the doc\n\n this.el_.setAttribute('lang', this.language_);\n this.el_.setAttribute('translate', 'no');\n this.el_ = el;\n return el;\n }\n /**\n * Get or set the `Player`'s crossOrigin option. For the HTML5 player, this\n * sets the `crossOrigin` property on the `` tag to control the CORS\n * behavior.\n *\n * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}\n *\n * @param {string} [value]\n * The value to set the `Player`'s crossOrigin to. If an argument is\n * given, must be one of `anonymous` or `use-credentials`.\n *\n * @return {string|undefined}\n * - The current crossOrigin value of the `Player` when getting.\n * - undefined when setting\n */\n ;\n\n _proto.crossOrigin = function crossOrigin(value) {\n if (!value) {\n return this.techGet_('crossOrigin');\n }\n\n if (value !== 'anonymous' && value !== 'use-credentials') {\n log$1.warn(\"crossOrigin must be \\\"anonymous\\\" or \\\"use-credentials\\\", given \\\"\" + value + \"\\\"\");\n return;\n }\n\n this.techCall_('setCrossOrigin', value);\n return;\n }\n /**\n * A getter/setter for the `Player`'s width. Returns the player's configured value.\n * To get the current width use `currentWidth()`.\n *\n * @param {number} [value]\n * The value to set the `Player`'s width to.\n *\n * @return {number}\n * The current width of the `Player` when getting.\n */\n ;\n\n _proto.width = function width(value) {\n return this.dimension('width', value);\n }\n /**\n * A getter/setter for the `Player`'s height. Returns the player's configured value.\n * To get the current height use `currentheight()`.\n *\n * @param {number} [value]\n * The value to set the `Player`'s heigth to.\n *\n * @return {number}\n * The current height of the `Player` when getting.\n */\n ;\n\n _proto.height = function height(value) {\n return this.dimension('height', value);\n }\n /**\n * A getter/setter for the `Player`'s width & height.\n *\n * @param {string} dimension\n * This string can be:\n * - 'width'\n * - 'height'\n *\n * @param {number} [value]\n * Value for dimension specified in the first argument.\n *\n * @return {number}\n * The dimension arguments value when getting (width/height).\n */\n ;\n\n _proto.dimension = function dimension(_dimension, value) {\n var privDimension = _dimension + '_';\n\n if (value === undefined) {\n return this[privDimension] || 0;\n }\n\n if (value === '' || value === 'auto') {\n // If an empty string is given, reset the dimension to be automatic\n this[privDimension] = undefined;\n this.updateStyleEl_();\n return;\n }\n\n var parsedVal = parseFloat(value);\n\n if (isNaN(parsedVal)) {\n log$1.error(\"Improper value \\\"\" + value + \"\\\" supplied for for \" + _dimension);\n return;\n }\n\n this[privDimension] = parsedVal;\n this.updateStyleEl_();\n }\n /**\n * A getter/setter/toggler for the vjs-fluid `className` on the `Player`.\n *\n * Turning this on will turn off fill mode.\n *\n * @param {boolean} [bool]\n * - A value of true adds the class.\n * - A value of false removes the class.\n * - No value will be a getter.\n *\n * @return {boolean|undefined}\n * - The value of fluid when getting.\n * - `undefined` when setting.\n */\n ;\n\n _proto.fluid = function fluid(bool) {\n var _this3 = this;\n\n if (bool === undefined) {\n return !!this.fluid_;\n }\n\n this.fluid_ = !!bool;\n\n if (isEvented(this)) {\n this.off(['playerreset', 'resize'], this.boundUpdateStyleEl_);\n }\n\n if (bool) {\n this.addClass('vjs-fluid');\n this.fill(false);\n addEventedCallback(this, function () {\n _this3.on(['playerreset', 'resize'], _this3.boundUpdateStyleEl_);\n });\n } else {\n this.removeClass('vjs-fluid');\n }\n\n this.updateStyleEl_();\n }\n /**\n * A getter/setter/toggler for the vjs-fill `className` on the `Player`.\n *\n * Turning this on will turn off fluid mode.\n *\n * @param {boolean} [bool]\n * - A value of true adds the class.\n * - A value of false removes the class.\n * - No value will be a getter.\n *\n * @return {boolean|undefined}\n * - The value of fluid when getting.\n * - `undefined` when setting.\n */\n ;\n\n _proto.fill = function fill(bool) {\n if (bool === undefined) {\n return !!this.fill_;\n }\n\n this.fill_ = !!bool;\n\n if (bool) {\n this.addClass('vjs-fill');\n this.fluid(false);\n } else {\n this.removeClass('vjs-fill');\n }\n }\n /**\n * Get/Set the aspect ratio\n *\n * @param {string} [ratio]\n * Aspect ratio for player\n *\n * @return {string|undefined}\n * returns the current aspect ratio when getting\n */\n\n /**\n * A getter/setter for the `Player`'s aspect ratio.\n *\n * @param {string} [ratio]\n * The value to set the `Player`'s aspect ratio to.\n *\n * @return {string|undefined}\n * - The current aspect ratio of the `Player` when getting.\n * - undefined when setting\n */\n ;\n\n _proto.aspectRatio = function aspectRatio(ratio) {\n if (ratio === undefined) {\n return this.aspectRatio_;\n } // Check for width:height format\n\n\n if (!/^\\d+\\:\\d+$/.test(ratio)) {\n throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.');\n }\n\n this.aspectRatio_ = ratio; // We're assuming if you set an aspect ratio you want fluid mode,\n // because in fixed mode you could calculate width and height yourself.\n\n this.fluid(true);\n this.updateStyleEl_();\n }\n /**\n * Update styles of the `Player` element (height, width and aspect ratio).\n *\n * @private\n * @listens Tech#loadedmetadata\n */\n ;\n\n _proto.updateStyleEl_ = function updateStyleEl_() {\n if (window$1.VIDEOJS_NO_DYNAMIC_STYLE === true) {\n var _width = typeof this.width_ === 'number' ? this.width_ : this.options_.width;\n\n var _height = typeof this.height_ === 'number' ? this.height_ : this.options_.height;\n\n var techEl = this.tech_ && this.tech_.el();\n\n if (techEl) {\n if (_width >= 0) {\n techEl.width = _width;\n }\n\n if (_height >= 0) {\n techEl.height = _height;\n }\n }\n\n return;\n }\n\n var width;\n var height;\n var aspectRatio;\n var idClass; // The aspect ratio is either used directly or to calculate width and height.\n\n if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') {\n // Use any aspectRatio that's been specifically set\n aspectRatio = this.aspectRatio_;\n } else if (this.videoWidth() > 0) {\n // Otherwise try to get the aspect ratio from the video metadata\n aspectRatio = this.videoWidth() + ':' + this.videoHeight();\n } else {\n // Or use a default. The video element's is 2:1, but 16:9 is more common.\n aspectRatio = '16:9';\n } // Get the ratio as a decimal we can use to calculate dimensions\n\n\n var ratioParts = aspectRatio.split(':');\n var ratioMultiplier = ratioParts[1] / ratioParts[0];\n\n if (this.width_ !== undefined) {\n // Use any width that's been specifically set\n width = this.width_;\n } else if (this.height_ !== undefined) {\n // Or calulate the width from the aspect ratio if a height has been set\n width = this.height_ / ratioMultiplier;\n } else {\n // Or use the video's metadata, or use the video el's default of 300\n width = this.videoWidth() || 300;\n }\n\n if (this.height_ !== undefined) {\n // Use any height that's been specifically set\n height = this.height_;\n } else {\n // Otherwise calculate the height from the ratio and the width\n height = width * ratioMultiplier;\n } // Ensure the CSS class is valid by starting with an alpha character\n\n\n if (/^[^a-zA-Z]/.test(this.id())) {\n idClass = 'dimensions-' + this.id();\n } else {\n idClass = this.id() + '-dimensions';\n } // Ensure the right class is still on the player for the style element\n\n\n this.addClass(idClass);\n setTextContent(this.styleEl_, \"\\n .\" + idClass + \" {\\n width: \" + width + \"px;\\n height: \" + height + \"px;\\n }\\n\\n .\" + idClass + \".vjs-fluid:not(.vjs-audio-only-mode) {\\n padding-top: \" + ratioMultiplier * 100 + \"%;\\n }\\n \");\n }\n /**\n * Load/Create an instance of playback {@link Tech} including element\n * and API methods. Then append the `Tech` element in `Player` as a child.\n *\n * @param {string} techName\n * name of the playback technology\n *\n * @param {string} source\n * video source\n *\n * @private\n */\n ;\n\n _proto.loadTech_ = function loadTech_(techName, source) {\n var _this4 = this;\n\n // Pause and remove current playback technology\n if (this.tech_) {\n this.unloadTech_();\n }\n\n var titleTechName = toTitleCase$1(techName);\n var camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1); // get rid of the HTML5 video tag as soon as we are using another tech\n\n if (titleTechName !== 'Html5' && this.tag) {\n Tech.getTech('Html5').disposeMediaElement(this.tag);\n this.tag.player = null;\n this.tag = null;\n }\n\n this.techName_ = titleTechName; // Turn off API access because we're loading a new tech that might load asynchronously\n\n this.isReady_ = false;\n var autoplay = this.autoplay(); // if autoplay is a string (or `true` with normalizeAutoplay: true) we pass false to the tech\n // because the player is going to handle autoplay on `loadstart`\n\n if (typeof this.autoplay() === 'string' || this.autoplay() === true && this.options_.normalizeAutoplay) {\n autoplay = false;\n } // Grab tech-specific options from player options and add source and parent element to use.\n\n\n var techOptions = {\n source: source,\n autoplay: autoplay,\n 'nativeControlsForTouch': this.options_.nativeControlsForTouch,\n 'playerId': this.id(),\n 'techId': this.id() + \"_\" + camelTechName + \"_api\",\n 'playsinline': this.options_.playsinline,\n 'preload': this.options_.preload,\n 'loop': this.options_.loop,\n 'disablePictureInPicture': this.options_.disablePictureInPicture,\n 'muted': this.options_.muted,\n 'poster': this.poster(),\n 'language': this.language(),\n 'playerElIngest': this.playerElIngest_ || false,\n 'vtt.js': this.options_['vtt.js'],\n 'canOverridePoster': !!this.options_.techCanOverridePoster,\n 'enableSourceset': this.options_.enableSourceset,\n 'Promise': this.options_.Promise\n };\n ALL.names.forEach(function (name) {\n var props = ALL[name];\n techOptions[props.getterName] = _this4[props.privateName];\n });\n assign(techOptions, this.options_[titleTechName]);\n assign(techOptions, this.options_[camelTechName]);\n assign(techOptions, this.options_[techName.toLowerCase()]);\n\n if (this.tag) {\n techOptions.tag = this.tag;\n }\n\n if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) {\n techOptions.startTime = this.cache_.currentTime;\n } // Initialize tech instance\n\n\n var TechClass = Tech.getTech(techName);\n\n if (!TechClass) {\n throw new Error(\"No Tech named '\" + titleTechName + \"' exists! '\" + titleTechName + \"' should be registered using videojs.registerTech()'\");\n }\n\n this.tech_ = new TechClass(techOptions); // player.triggerReady is always async, so don't need this to be async\n\n this.tech_.ready(bind(this, this.handleTechReady_), true);\n textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_); // Listen to all HTML5-defined events and trigger them on the player\n\n TECH_EVENTS_RETRIGGER.forEach(function (event) {\n _this4.on(_this4.tech_, event, function (e) {\n return _this4[\"handleTech\" + toTitleCase$1(event) + \"_\"](e);\n });\n });\n Object.keys(TECH_EVENTS_QUEUE).forEach(function (event) {\n _this4.on(_this4.tech_, event, function (eventObj) {\n if (_this4.tech_.playbackRate() === 0 && _this4.tech_.seeking()) {\n _this4.queuedCallbacks_.push({\n callback: _this4[\"handleTech\" + TECH_EVENTS_QUEUE[event] + \"_\"].bind(_this4),\n event: eventObj\n });\n\n return;\n }\n\n _this4[\"handleTech\" + TECH_EVENTS_QUEUE[event] + \"_\"](eventObj);\n });\n });\n this.on(this.tech_, 'loadstart', function (e) {\n return _this4.handleTechLoadStart_(e);\n });\n this.on(this.tech_, 'sourceset', function (e) {\n return _this4.handleTechSourceset_(e);\n });\n this.on(this.tech_, 'waiting', function (e) {\n return _this4.handleTechWaiting_(e);\n });\n this.on(this.tech_, 'ended', function (e) {\n return _this4.handleTechEnded_(e);\n });\n this.on(this.tech_, 'seeking', function (e) {\n return _this4.handleTechSeeking_(e);\n });\n this.on(this.tech_, 'play', function (e) {\n return _this4.handleTechPlay_(e);\n });\n this.on(this.tech_, 'firstplay', function (e) {\n return _this4.handleTechFirstPlay_(e);\n });\n this.on(this.tech_, 'pause', function (e) {\n return _this4.handleTechPause_(e);\n });\n this.on(this.tech_, 'durationchange', function (e) {\n return _this4.handleTechDurationChange_(e);\n });\n this.on(this.tech_, 'fullscreenchange', function (e, data) {\n return _this4.handleTechFullscreenChange_(e, data);\n });\n this.on(this.tech_, 'fullscreenerror', function (e, err) {\n return _this4.handleTechFullscreenError_(e, err);\n });\n this.on(this.tech_, 'enterpictureinpicture', function (e) {\n return _this4.handleTechEnterPictureInPicture_(e);\n });\n this.on(this.tech_, 'leavepictureinpicture', function (e) {\n return _this4.handleTechLeavePictureInPicture_(e);\n });\n this.on(this.tech_, 'error', function (e) {\n return _this4.handleTechError_(e);\n });\n this.on(this.tech_, 'posterchange', function (e) {\n return _this4.handleTechPosterChange_(e);\n });\n this.on(this.tech_, 'textdata', function (e) {\n return _this4.handleTechTextData_(e);\n });\n this.on(this.tech_, 'ratechange', function (e) {\n return _this4.handleTechRateChange_(e);\n });\n this.on(this.tech_, 'loadedmetadata', this.boundUpdateStyleEl_);\n this.usingNativeControls(this.techGet_('controls'));\n\n if (this.controls() && !this.usingNativeControls()) {\n this.addTechControlsListeners_();\n } // Add the tech element in the DOM if it was not already there\n // Make sure to not insert the original video element if using Html5\n\n\n if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) {\n prependTo(this.tech_.el(), this.el());\n } // Get rid of the original video tag reference after the first tech is loaded\n\n\n if (this.tag) {\n this.tag.player = null;\n this.tag = null;\n }\n }\n /**\n * Unload and dispose of the current playback {@link Tech}.\n *\n * @private\n */\n ;\n\n _proto.unloadTech_ = function unloadTech_() {\n var _this5 = this;\n\n // Save the current text tracks so that we can reuse the same text tracks with the next tech\n ALL.names.forEach(function (name) {\n var props = ALL[name];\n _this5[props.privateName] = _this5[props.getterName]();\n });\n this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_);\n this.isReady_ = false;\n this.tech_.dispose();\n this.tech_ = false;\n\n if (this.isPosterFromTech_) {\n this.poster_ = '';\n this.trigger('posterchange');\n }\n\n this.isPosterFromTech_ = false;\n }\n /**\n * Return a reference to the current {@link Tech}.\n * It will print a warning by default about the danger of using the tech directly\n * but any argument that is passed in will silence the warning.\n *\n * @param {*} [safety]\n * Anything passed in to silence the warning\n *\n * @return {Tech}\n * The Tech\n */\n ;\n\n _proto.tech = function tech(safety) {\n if (safety === undefined) {\n log$1.warn('Using the tech directly can be dangerous. I hope you know what you\\'re doing.\\n' + 'See https://github.com/videojs/video.js/issues/2617 for more info.\\n');\n }\n\n return this.tech_;\n }\n /**\n * Set up click and touch listeners for the playback element\n *\n * - On desktops: a click on the video itself will toggle playback\n * - On mobile devices: a click on the video toggles controls\n * which is done by toggling the user state between active and\n * inactive\n * - A tap can signal that a user has become active or has become inactive\n * e.g. a quick tap on an iPhone movie should reveal the controls. Another\n * quick tap should hide them again (signaling the user is in an inactive\n * viewing state)\n * - In addition to this, we still want the user to be considered inactive after\n * a few seconds of inactivity.\n *\n * > Note: the only part of iOS interaction we can't mimic with this setup\n * is a touch and hold on the video element counting as activity in order to\n * keep the controls showing, but that shouldn't be an issue. A touch and hold\n * on any controls will still keep the user active\n *\n * @private\n */\n ;\n\n _proto.addTechControlsListeners_ = function addTechControlsListeners_() {\n // Make sure to remove all the previous listeners in case we are called multiple times.\n this.removeTechControlsListeners_();\n this.on(this.tech_, 'click', this.boundHandleTechClick_);\n this.on(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_); // If the controls were hidden we don't want that to change without a tap event\n // so we'll check if the controls were already showing before reporting user\n // activity\n\n this.on(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);\n this.on(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);\n this.on(this.tech_, 'touchend', this.boundHandleTechTouchEnd_); // The tap listener needs to come after the touchend listener because the tap\n // listener cancels out any reportedUserActivity when setting userActive(false)\n\n this.on(this.tech_, 'tap', this.boundHandleTechTap_);\n }\n /**\n * Remove the listeners used for click and tap controls. This is needed for\n * toggling to controls disabled, where a tap/touch should do nothing.\n *\n * @private\n */\n ;\n\n _proto.removeTechControlsListeners_ = function removeTechControlsListeners_() {\n // We don't want to just use `this.off()` because there might be other needed\n // listeners added by techs that extend this.\n this.off(this.tech_, 'tap', this.boundHandleTechTap_);\n this.off(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);\n this.off(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);\n this.off(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);\n this.off(this.tech_, 'click', this.boundHandleTechClick_);\n this.off(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);\n }\n /**\n * Player waits for the tech to be ready\n *\n * @private\n */\n ;\n\n _proto.handleTechReady_ = function handleTechReady_() {\n this.triggerReady(); // Keep the same volume as before\n\n if (this.cache_.volume) {\n this.techCall_('setVolume', this.cache_.volume);\n } // Look if the tech found a higher resolution poster while loading\n\n\n this.handleTechPosterChange_(); // Update the duration if available\n\n this.handleTechDurationChange_();\n }\n /**\n * Retrigger the `loadstart` event that was triggered by the {@link Tech}. This\n * function will also trigger {@link Player#firstplay} if it is the first loadstart\n * for a video.\n *\n * @fires Player#loadstart\n * @fires Player#firstplay\n * @listens Tech#loadstart\n * @private\n */\n ;\n\n _proto.handleTechLoadStart_ = function handleTechLoadStart_() {\n // TODO: Update to use `emptied` event instead. See #1277.\n this.removeClass('vjs-ended');\n this.removeClass('vjs-seeking'); // reset the error state\n\n this.error(null); // Update the duration\n\n this.handleTechDurationChange_(); // If it's already playing we want to trigger a firstplay event now.\n // The firstplay event relies on both the play and loadstart events\n // which can happen in any order for a new source\n\n if (!this.paused()) {\n /**\n * Fired when the user agent begins looking for media data\n *\n * @event Player#loadstart\n * @type {EventTarget~Event}\n */\n this.trigger('loadstart');\n this.trigger('firstplay');\n } else {\n // reset the hasStarted state\n this.hasStarted(false);\n this.trigger('loadstart');\n } // autoplay happens after loadstart for the browser,\n // so we mimic that behavior\n\n\n this.manualAutoplay_(this.autoplay() === true && this.options_.normalizeAutoplay ? 'play' : this.autoplay());\n }\n /**\n * Handle autoplay string values, rather than the typical boolean\n * values that should be handled by the tech. Note that this is not\n * part of any specification. Valid values and what they do can be\n * found on the autoplay getter at Player#autoplay()\n */\n ;\n\n _proto.manualAutoplay_ = function manualAutoplay_(type) {\n var _this6 = this;\n\n if (!this.tech_ || typeof type !== 'string') {\n return;\n } // Save original muted() value, set muted to true, and attempt to play().\n // On promise rejection, restore muted from saved value\n\n\n var resolveMuted = function resolveMuted() {\n var previouslyMuted = _this6.muted();\n\n _this6.muted(true);\n\n var restoreMuted = function restoreMuted() {\n _this6.muted(previouslyMuted);\n }; // restore muted on play terminatation\n\n\n _this6.playTerminatedQueue_.push(restoreMuted);\n\n var mutedPromise = _this6.play();\n\n if (!isPromise(mutedPromise)) {\n return;\n }\n\n return mutedPromise[\"catch\"](function (err) {\n restoreMuted();\n throw new Error(\"Rejection at manualAutoplay. Restoring muted value. \" + (err ? err : ''));\n });\n };\n\n var promise; // if muted defaults to true\n // the only thing we can do is call play\n\n if (type === 'any' && !this.muted()) {\n promise = this.play();\n\n if (isPromise(promise)) {\n promise = promise[\"catch\"](resolveMuted);\n }\n } else if (type === 'muted' && !this.muted()) {\n promise = resolveMuted();\n } else {\n promise = this.play();\n }\n\n if (!isPromise(promise)) {\n return;\n }\n\n return promise.then(function () {\n _this6.trigger({\n type: 'autoplay-success',\n autoplay: type\n });\n })[\"catch\"](function () {\n _this6.trigger({\n type: 'autoplay-failure',\n autoplay: type\n });\n });\n }\n /**\n * Update the internal source caches so that we return the correct source from\n * `src()`, `currentSource()`, and `currentSources()`.\n *\n * > Note: `currentSources` will not be updated if the source that is passed in exists\n * in the current `currentSources` cache.\n *\n *\n * @param {Tech~SourceObject} srcObj\n * A string or object source to update our caches to.\n */\n ;\n\n _proto.updateSourceCaches_ = function updateSourceCaches_(srcObj) {\n if (srcObj === void 0) {\n srcObj = '';\n }\n\n var src = srcObj;\n var type = '';\n\n if (typeof src !== 'string') {\n src = srcObj.src;\n type = srcObj.type;\n } // make sure all the caches are set to default values\n // to prevent null checking\n\n\n this.cache_.source = this.cache_.source || {};\n this.cache_.sources = this.cache_.sources || []; // try to get the type of the src that was passed in\n\n if (src && !type) {\n type = findMimetype(this, src);\n } // update `currentSource` cache always\n\n\n this.cache_.source = mergeOptions$3({}, srcObj, {\n src: src,\n type: type\n });\n var matchingSources = this.cache_.sources.filter(function (s) {\n return s.src && s.src === src;\n });\n var sourceElSources = [];\n var sourceEls = this.$$('source');\n var matchingSourceEls = [];\n\n for (var i = 0; i < sourceEls.length; i++) {\n var sourceObj = getAttributes(sourceEls[i]);\n sourceElSources.push(sourceObj);\n\n if (sourceObj.src && sourceObj.src === src) {\n matchingSourceEls.push(sourceObj.src);\n }\n } // if we have matching source els but not matching sources\n // the current source cache is not up to date\n\n\n if (matchingSourceEls.length && !matchingSources.length) {\n this.cache_.sources = sourceElSources; // if we don't have matching source or source els set the\n // sources cache to the `currentSource` cache\n } else if (!matchingSources.length) {\n this.cache_.sources = [this.cache_.source];\n } // update the tech `src` cache\n\n\n this.cache_.src = src;\n }\n /**\n * *EXPERIMENTAL* Fired when the source is set or changed on the {@link Tech}\n * causing the media element to reload.\n *\n * It will fire for the initial source and each subsequent source.\n * This event is a custom event from Video.js and is triggered by the {@link Tech}.\n *\n * The event object for this event contains a `src` property that will contain the source\n * that was available when the event was triggered. This is generally only necessary if Video.js\n * is switching techs while the source was being changed.\n *\n * It is also fired when `load` is called on the player (or media element)\n * because the {@link https://html.spec.whatwg.org/multipage/media.html#dom-media-load|specification for `load`}\n * says that the resource selection algorithm needs to be aborted and restarted.\n * In this case, it is very likely that the `src` property will be set to the\n * empty string `\"\"` to indicate we do not know what the source will be but\n * that it is changing.\n *\n * *This event is currently still experimental and may change in minor releases.*\n * __To use this, pass `enableSourceset` option to the player.__\n *\n * @event Player#sourceset\n * @type {EventTarget~Event}\n * @prop {string} src\n * The source url available when the `sourceset` was triggered.\n * It will be an empty string if we cannot know what the source is\n * but know that the source will change.\n */\n\n /**\n * Retrigger the `sourceset` event that was triggered by the {@link Tech}.\n *\n * @fires Player#sourceset\n * @listens Tech#sourceset\n * @private\n */\n ;\n\n _proto.handleTechSourceset_ = function handleTechSourceset_(event) {\n var _this7 = this;\n\n // only update the source cache when the source\n // was not updated using the player api\n if (!this.changingSrc_) {\n var updateSourceCaches = function updateSourceCaches(src) {\n return _this7.updateSourceCaches_(src);\n };\n\n var playerSrc = this.currentSource().src;\n var eventSrc = event.src; // if we have a playerSrc that is not a blob, and a tech src that is a blob\n\n if (playerSrc && !/^blob:/.test(playerSrc) && /^blob:/.test(eventSrc)) {\n // if both the tech source and the player source were updated we assume\n // something like @videojs/http-streaming did the sourceset and skip updating the source cache.\n if (!this.lastSource_ || this.lastSource_.tech !== eventSrc && this.lastSource_.player !== playerSrc) {\n updateSourceCaches = function updateSourceCaches() {};\n }\n } // update the source to the initial source right away\n // in some cases this will be empty string\n\n\n updateSourceCaches(eventSrc); // if the `sourceset` `src` was an empty string\n // wait for a `loadstart` to update the cache to `currentSrc`.\n // If a sourceset happens before a `loadstart`, we reset the state\n\n if (!event.src) {\n this.tech_.any(['sourceset', 'loadstart'], function (e) {\n // if a sourceset happens before a `loadstart` there\n // is nothing to do as this `handleTechSourceset_`\n // will be called again and this will be handled there.\n if (e.type === 'sourceset') {\n return;\n }\n\n var techSrc = _this7.techGet('currentSrc');\n\n _this7.lastSource_.tech = techSrc;\n\n _this7.updateSourceCaches_(techSrc);\n });\n }\n }\n\n this.lastSource_ = {\n player: this.currentSource().src,\n tech: event.src\n };\n this.trigger({\n src: event.src,\n type: 'sourceset'\n });\n }\n /**\n * Add/remove the vjs-has-started class\n *\n * @fires Player#firstplay\n *\n * @param {boolean} request\n * - true: adds the class\n * - false: remove the class\n *\n * @return {boolean}\n * the boolean value of hasStarted_\n */\n ;\n\n _proto.hasStarted = function hasStarted(request) {\n if (request === undefined) {\n // act as getter, if we have no request to change\n return this.hasStarted_;\n }\n\n if (request === this.hasStarted_) {\n return;\n }\n\n this.hasStarted_ = request;\n\n if (this.hasStarted_) {\n this.addClass('vjs-has-started');\n this.trigger('firstplay');\n } else {\n this.removeClass('vjs-has-started');\n }\n }\n /**\n * Fired whenever the media begins or resumes playback\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play}\n * @fires Player#play\n * @listens Tech#play\n * @private\n */\n ;\n\n _proto.handleTechPlay_ = function handleTechPlay_() {\n this.removeClass('vjs-ended');\n this.removeClass('vjs-paused');\n this.addClass('vjs-playing'); // hide the poster when the user hits play\n\n this.hasStarted(true);\n /**\n * Triggered whenever an {@link Tech#play} event happens. Indicates that\n * playback has started or resumed.\n *\n * @event Player#play\n * @type {EventTarget~Event}\n */\n\n this.trigger('play');\n }\n /**\n * Retrigger the `ratechange` event that was triggered by the {@link Tech}.\n *\n * If there were any events queued while the playback rate was zero, fire\n * those events now.\n *\n * @private\n * @method Player#handleTechRateChange_\n * @fires Player#ratechange\n * @listens Tech#ratechange\n */\n ;\n\n _proto.handleTechRateChange_ = function handleTechRateChange_() {\n if (this.tech_.playbackRate() > 0 && this.cache_.lastPlaybackRate === 0) {\n this.queuedCallbacks_.forEach(function (queued) {\n return queued.callback(queued.event);\n });\n this.queuedCallbacks_ = [];\n }\n\n this.cache_.lastPlaybackRate = this.tech_.playbackRate();\n /**\n * Fires when the playing speed of the audio/video is changed\n *\n * @event Player#ratechange\n * @type {event}\n */\n\n this.trigger('ratechange');\n }\n /**\n * Retrigger the `waiting` event that was triggered by the {@link Tech}.\n *\n * @fires Player#waiting\n * @listens Tech#waiting\n * @private\n */\n ;\n\n _proto.handleTechWaiting_ = function handleTechWaiting_() {\n var _this8 = this;\n\n this.addClass('vjs-waiting');\n /**\n * A readyState change on the DOM element has caused playback to stop.\n *\n * @event Player#waiting\n * @type {EventTarget~Event}\n */\n\n this.trigger('waiting'); // Browsers may emit a timeupdate event after a waiting event. In order to prevent\n // premature removal of the waiting class, wait for the time to change.\n\n var timeWhenWaiting = this.currentTime();\n\n var timeUpdateListener = function timeUpdateListener() {\n if (timeWhenWaiting !== _this8.currentTime()) {\n _this8.removeClass('vjs-waiting');\n\n _this8.off('timeupdate', timeUpdateListener);\n }\n };\n\n this.on('timeupdate', timeUpdateListener);\n }\n /**\n * Retrigger the `canplay` event that was triggered by the {@link Tech}.\n * > Note: This is not consistent between browsers. See #1351\n *\n * @fires Player#canplay\n * @listens Tech#canplay\n * @private\n */\n ;\n\n _proto.handleTechCanPlay_ = function handleTechCanPlay_() {\n this.removeClass('vjs-waiting');\n /**\n * The media has a readyState of HAVE_FUTURE_DATA or greater.\n *\n * @event Player#canplay\n * @type {EventTarget~Event}\n */\n\n this.trigger('canplay');\n }\n /**\n * Retrigger the `canplaythrough` event that was triggered by the {@link Tech}.\n *\n * @fires Player#canplaythrough\n * @listens Tech#canplaythrough\n * @private\n */\n ;\n\n _proto.handleTechCanPlayThrough_ = function handleTechCanPlayThrough_() {\n this.removeClass('vjs-waiting');\n /**\n * The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the\n * entire media file can be played without buffering.\n *\n * @event Player#canplaythrough\n * @type {EventTarget~Event}\n */\n\n this.trigger('canplaythrough');\n }\n /**\n * Retrigger the `playing` event that was triggered by the {@link Tech}.\n *\n * @fires Player#playing\n * @listens Tech#playing\n * @private\n */\n ;\n\n _proto.handleTechPlaying_ = function handleTechPlaying_() {\n this.removeClass('vjs-waiting');\n /**\n * The media is no longer blocked from playback, and has started playing.\n *\n * @event Player#playing\n * @type {EventTarget~Event}\n */\n\n this.trigger('playing');\n }\n /**\n * Retrigger the `seeking` event that was triggered by the {@link Tech}.\n *\n * @fires Player#seeking\n * @listens Tech#seeking\n * @private\n */\n ;\n\n _proto.handleTechSeeking_ = function handleTechSeeking_() {\n this.addClass('vjs-seeking');\n /**\n * Fired whenever the player is jumping to a new time\n *\n * @event Player#seeking\n * @type {EventTarget~Event}\n */\n\n this.trigger('seeking');\n }\n /**\n * Retrigger the `seeked` event that was triggered by the {@link Tech}.\n *\n * @fires Player#seeked\n * @listens Tech#seeked\n * @private\n */\n ;\n\n _proto.handleTechSeeked_ = function handleTechSeeked_() {\n this.removeClass('vjs-seeking');\n this.removeClass('vjs-ended');\n /**\n * Fired when the player has finished jumping to a new time\n *\n * @event Player#seeked\n * @type {EventTarget~Event}\n */\n\n this.trigger('seeked');\n }\n /**\n * Retrigger the `firstplay` event that was triggered by the {@link Tech}.\n *\n * @fires Player#firstplay\n * @listens Tech#firstplay\n * @deprecated As of 6.0 firstplay event is deprecated.\n * As of 6.0 passing the `starttime` option to the player and the firstplay event are deprecated.\n * @private\n */\n ;\n\n _proto.handleTechFirstPlay_ = function handleTechFirstPlay_() {\n // If the first starttime attribute is specified\n // then we will start at the given offset in seconds\n if (this.options_.starttime) {\n log$1.warn('Passing the `starttime` option to the player will be deprecated in 6.0');\n this.currentTime(this.options_.starttime);\n }\n\n this.addClass('vjs-has-started');\n /**\n * Fired the first time a video is played. Not part of the HLS spec, and this is\n * probably not the best implementation yet, so use sparingly. If you don't have a\n * reason to prevent playback, use `myPlayer.one('play');` instead.\n *\n * @event Player#firstplay\n * @deprecated As of 6.0 firstplay event is deprecated.\n * @type {EventTarget~Event}\n */\n\n this.trigger('firstplay');\n }\n /**\n * Retrigger the `pause` event that was triggered by the {@link Tech}.\n *\n * @fires Player#pause\n * @listens Tech#pause\n * @private\n */\n ;\n\n _proto.handleTechPause_ = function handleTechPause_() {\n this.removeClass('vjs-playing');\n this.addClass('vjs-paused');\n /**\n * Fired whenever the media has been paused\n *\n * @event Player#pause\n * @type {EventTarget~Event}\n */\n\n this.trigger('pause');\n }\n /**\n * Retrigger the `ended` event that was triggered by the {@link Tech}.\n *\n * @fires Player#ended\n * @listens Tech#ended\n * @private\n */\n ;\n\n _proto.handleTechEnded_ = function handleTechEnded_() {\n this.addClass('vjs-ended');\n this.removeClass('vjs-waiting');\n\n if (this.options_.loop) {\n this.currentTime(0);\n this.play();\n } else if (!this.paused()) {\n this.pause();\n }\n /**\n * Fired when the end of the media resource is reached (currentTime == duration)\n *\n * @event Player#ended\n * @type {EventTarget~Event}\n */\n\n\n this.trigger('ended');\n }\n /**\n * Fired when the duration of the media resource is first known or changed\n *\n * @listens Tech#durationchange\n * @private\n */\n ;\n\n _proto.handleTechDurationChange_ = function handleTechDurationChange_() {\n this.duration(this.techGet_('duration'));\n }\n /**\n * Handle a click on the media element to play/pause\n *\n * @param {EventTarget~Event} event\n * the event that caused this function to trigger\n *\n * @listens Tech#click\n * @private\n */\n ;\n\n _proto.handleTechClick_ = function handleTechClick_(event) {\n // When controls are disabled a click should not toggle playback because\n // the click is considered a control\n if (!this.controls_) {\n return;\n }\n\n if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.click === undefined || this.options_.userActions.click !== false) {\n if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.click === 'function') {\n this.options_.userActions.click.call(this, event);\n } else if (this.paused()) {\n silencePromise(this.play());\n } else {\n this.pause();\n }\n }\n }\n /**\n * Handle a double-click on the media element to enter/exit fullscreen\n *\n * @param {EventTarget~Event} event\n * the event that caused this function to trigger\n *\n * @listens Tech#dblclick\n * @private\n */\n ;\n\n _proto.handleTechDoubleClick_ = function handleTechDoubleClick_(event) {\n if (!this.controls_) {\n return;\n } // we do not want to toggle fullscreen state\n // when double-clicking inside a control bar or a modal\n\n\n var inAllowedEls = Array.prototype.some.call(this.$$('.vjs-control-bar, .vjs-modal-dialog'), function (el) {\n return el.contains(event.target);\n });\n\n if (!inAllowedEls) {\n /*\n * options.userActions.doubleClick\n *\n * If `undefined` or `true`, double-click toggles fullscreen if controls are present\n * Set to `false` to disable double-click handling\n * Set to a function to substitute an external double-click handler\n */\n if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.doubleClick === undefined || this.options_.userActions.doubleClick !== false) {\n if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.doubleClick === 'function') {\n this.options_.userActions.doubleClick.call(this, event);\n } else if (this.isFullscreen()) {\n this.exitFullscreen();\n } else {\n this.requestFullscreen();\n }\n }\n }\n }\n /**\n * Handle a tap on the media element. It will toggle the user\n * activity state, which hides and shows the controls.\n *\n * @listens Tech#tap\n * @private\n */\n ;\n\n _proto.handleTechTap_ = function handleTechTap_() {\n this.userActive(!this.userActive());\n }\n /**\n * Handle touch to start\n *\n * @listens Tech#touchstart\n * @private\n */\n ;\n\n _proto.handleTechTouchStart_ = function handleTechTouchStart_() {\n this.userWasActive = this.userActive();\n }\n /**\n * Handle touch to move\n *\n * @listens Tech#touchmove\n * @private\n */\n ;\n\n _proto.handleTechTouchMove_ = function handleTechTouchMove_() {\n if (this.userWasActive) {\n this.reportUserActivity();\n }\n }\n /**\n * Handle touch to end\n *\n * @param {EventTarget~Event} event\n * the touchend event that triggered\n * this function\n *\n * @listens Tech#touchend\n * @private\n */\n ;\n\n _proto.handleTechTouchEnd_ = function handleTechTouchEnd_(event) {\n // Stop the mouse events from also happening\n if (event.cancelable) {\n event.preventDefault();\n }\n }\n /**\n * native click events on the SWF aren't triggered on IE11, Win8.1RT\n * use stageclick events triggered from inside the SWF instead\n *\n * @private\n * @listens stageclick\n */\n ;\n\n _proto.handleStageClick_ = function handleStageClick_() {\n this.reportUserActivity();\n }\n /**\n * @private\n */\n ;\n\n _proto.toggleFullscreenClass_ = function toggleFullscreenClass_() {\n if (this.isFullscreen()) {\n this.addClass('vjs-fullscreen');\n } else {\n this.removeClass('vjs-fullscreen');\n }\n }\n /**\n * when the document fschange event triggers it calls this\n */\n ;\n\n _proto.documentFullscreenChange_ = function documentFullscreenChange_(e) {\n var targetPlayer = e.target.player; // if another player was fullscreen\n // do a null check for targetPlayer because older firefox's would put document as e.target\n\n if (targetPlayer && targetPlayer !== this) {\n return;\n }\n\n var el = this.el();\n var isFs = document[this.fsApi_.fullscreenElement] === el;\n\n if (!isFs && el.matches) {\n isFs = el.matches(':' + this.fsApi_.fullscreen);\n } else if (!isFs && el.msMatchesSelector) {\n isFs = el.msMatchesSelector(':' + this.fsApi_.fullscreen);\n }\n\n this.isFullscreen(isFs);\n }\n /**\n * Handle Tech Fullscreen Change\n *\n * @param {EventTarget~Event} event\n * the fullscreenchange event that triggered this function\n *\n * @param {Object} data\n * the data that was sent with the event\n *\n * @private\n * @listens Tech#fullscreenchange\n * @fires Player#fullscreenchange\n */\n ;\n\n _proto.handleTechFullscreenChange_ = function handleTechFullscreenChange_(event, data) {\n var _this9 = this;\n\n if (data) {\n if (data.nativeIOSFullscreen) {\n this.addClass('vjs-ios-native-fs');\n this.tech_.one('webkitendfullscreen', function () {\n _this9.removeClass('vjs-ios-native-fs');\n });\n }\n\n this.isFullscreen(data.isFullscreen);\n }\n };\n\n _proto.handleTechFullscreenError_ = function handleTechFullscreenError_(event, err) {\n this.trigger('fullscreenerror', err);\n }\n /**\n * @private\n */\n ;\n\n _proto.togglePictureInPictureClass_ = function togglePictureInPictureClass_() {\n if (this.isInPictureInPicture()) {\n this.addClass('vjs-picture-in-picture');\n } else {\n this.removeClass('vjs-picture-in-picture');\n }\n }\n /**\n * Handle Tech Enter Picture-in-Picture.\n *\n * @param {EventTarget~Event} event\n * the enterpictureinpicture event that triggered this function\n *\n * @private\n * @listens Tech#enterpictureinpicture\n */\n ;\n\n _proto.handleTechEnterPictureInPicture_ = function handleTechEnterPictureInPicture_(event) {\n this.isInPictureInPicture(true);\n }\n /**\n * Handle Tech Leave Picture-in-Picture.\n *\n * @param {EventTarget~Event} event\n * the leavepictureinpicture event that triggered this function\n *\n * @private\n * @listens Tech#leavepictureinpicture\n */\n ;\n\n _proto.handleTechLeavePictureInPicture_ = function handleTechLeavePictureInPicture_(event) {\n this.isInPictureInPicture(false);\n }\n /**\n * Fires when an error occurred during the loading of an audio/video.\n *\n * @private\n * @listens Tech#error\n */\n ;\n\n _proto.handleTechError_ = function handleTechError_() {\n var error = this.tech_.error();\n this.error(error);\n }\n /**\n * Retrigger the `textdata` event that was triggered by the {@link Tech}.\n *\n * @fires Player#textdata\n * @listens Tech#textdata\n * @private\n */\n ;\n\n _proto.handleTechTextData_ = function handleTechTextData_() {\n var data = null;\n\n if (arguments.length > 1) {\n data = arguments[1];\n }\n /**\n * Fires when we get a textdata event from tech\n *\n * @event Player#textdata\n * @type {EventTarget~Event}\n */\n\n\n this.trigger('textdata', data);\n }\n /**\n * Get object for cached values.\n *\n * @return {Object}\n * get the current object cache\n */\n ;\n\n _proto.getCache = function getCache() {\n return this.cache_;\n }\n /**\n * Resets the internal cache object.\n *\n * Using this function outside the player constructor or reset method may\n * have unintended side-effects.\n *\n * @private\n */\n ;\n\n _proto.resetCache_ = function resetCache_() {\n this.cache_ = {\n // Right now, the currentTime is not _really_ cached because it is always\n // retrieved from the tech (see: currentTime). However, for completeness,\n // we set it to zero here to ensure that if we do start actually caching\n // it, we reset it along with everything else.\n currentTime: 0,\n initTime: 0,\n inactivityTimeout: this.options_.inactivityTimeout,\n duration: NaN,\n lastVolume: 1,\n lastPlaybackRate: this.defaultPlaybackRate(),\n media: null,\n src: '',\n source: {},\n sources: [],\n playbackRates: [],\n volume: 1\n };\n }\n /**\n * Pass values to the playback tech\n *\n * @param {string} [method]\n * the method to call\n *\n * @param {Object} arg\n * the argument to pass\n *\n * @private\n */\n ;\n\n _proto.techCall_ = function techCall_(method, arg) {\n // If it's not ready yet, call method when it is\n this.ready(function () {\n if (method in allowedSetters) {\n return set(this.middleware_, this.tech_, method, arg);\n } else if (method in allowedMediators) {\n return mediate(this.middleware_, this.tech_, method, arg);\n }\n\n try {\n if (this.tech_) {\n this.tech_[method](arg);\n }\n } catch (e) {\n log$1(e);\n throw e;\n }\n }, true);\n }\n /**\n * Get calls can't wait for the tech, and sometimes don't need to.\n *\n * @param {string} method\n * Tech method\n *\n * @return {Function|undefined}\n * the method or undefined\n *\n * @private\n */\n ;\n\n _proto.techGet_ = function techGet_(method) {\n if (!this.tech_ || !this.tech_.isReady_) {\n return;\n }\n\n if (method in allowedGetters) {\n return get(this.middleware_, this.tech_, method);\n } else if (method in allowedMediators) {\n return mediate(this.middleware_, this.tech_, method);\n } // Flash likes to die and reload when you hide or reposition it.\n // In these cases the object methods go away and we get errors.\n // TODO: Is this needed for techs other than Flash?\n // When that happens we'll catch the errors and inform tech that it's not ready any more.\n\n\n try {\n return this.tech_[method]();\n } catch (e) {\n // When building additional tech libs, an expected method may not be defined yet\n if (this.tech_[method] === undefined) {\n log$1(\"Video.js: \" + method + \" method not defined for \" + this.techName_ + \" playback technology.\", e);\n throw e;\n } // When a method isn't available on the object it throws a TypeError\n\n\n if (e.name === 'TypeError') {\n log$1(\"Video.js: \" + method + \" unavailable on \" + this.techName_ + \" playback technology element.\", e);\n this.tech_.isReady_ = false;\n throw e;\n } // If error unknown, just log and throw\n\n\n log$1(e);\n throw e;\n }\n }\n /**\n * Attempt to begin playback at the first opportunity.\n *\n * @return {Promise|undefined}\n * Returns a promise if the browser supports Promises (or one\n * was passed in as an option). This promise will be resolved on\n * the return value of play. If this is undefined it will fulfill the\n * promise chain otherwise the promise chain will be fulfilled when\n * the promise from play is fulfilled.\n */\n ;\n\n _proto.play = function play() {\n var _this10 = this;\n\n var PromiseClass = this.options_.Promise || window$1.Promise;\n\n if (PromiseClass) {\n return new PromiseClass(function (resolve) {\n _this10.play_(resolve);\n });\n }\n\n return this.play_();\n }\n /**\n * The actual logic for play, takes a callback that will be resolved on the\n * return value of play. This allows us to resolve to the play promise if there\n * is one on modern browsers.\n *\n * @private\n * @param {Function} [callback]\n * The callback that should be called when the techs play is actually called\n */\n ;\n\n _proto.play_ = function play_(callback) {\n var _this11 = this;\n\n if (callback === void 0) {\n callback = silencePromise;\n }\n\n this.playCallbacks_.push(callback);\n var isSrcReady = Boolean(!this.changingSrc_ && (this.src() || this.currentSrc()));\n var isSafariOrIOS = Boolean(IS_ANY_SAFARI || IS_IOS); // treat calls to play_ somewhat like the `one` event function\n\n if (this.waitToPlay_) {\n this.off(['ready', 'loadstart'], this.waitToPlay_);\n this.waitToPlay_ = null;\n } // if the player/tech is not ready or the src itself is not ready\n // queue up a call to play on `ready` or `loadstart`\n\n\n if (!this.isReady_ || !isSrcReady) {\n this.waitToPlay_ = function (e) {\n _this11.play_();\n };\n\n this.one(['ready', 'loadstart'], this.waitToPlay_); // if we are in Safari, there is a high chance that loadstart will trigger after the gesture timeperiod\n // in that case, we need to prime the video element by calling load so it'll be ready in time\n\n if (!isSrcReady && isSafariOrIOS) {\n this.load();\n }\n\n return;\n } // If the player/tech is ready and we have a source, we can attempt playback.\n\n\n var val = this.techGet_('play'); // For native playback, reset the progress bar if we get a play call from a replay.\n\n var isNativeReplay = isSafariOrIOS && this.hasClass('vjs-ended');\n\n if (isNativeReplay) {\n this.resetProgressBar_();\n } // play was terminated if the returned value is null\n\n\n if (val === null) {\n this.runPlayTerminatedQueue_();\n } else {\n this.runPlayCallbacks_(val);\n }\n }\n /**\n * These functions will be run when if play is terminated. If play\n * runPlayCallbacks_ is run these function will not be run. This allows us\n * to differenciate between a terminated play and an actual call to play.\n */\n ;\n\n _proto.runPlayTerminatedQueue_ = function runPlayTerminatedQueue_() {\n var queue = this.playTerminatedQueue_.slice(0);\n this.playTerminatedQueue_ = [];\n queue.forEach(function (q) {\n q();\n });\n }\n /**\n * When a callback to play is delayed we have to run these\n * callbacks when play is actually called on the tech. This function\n * runs the callbacks that were delayed and accepts the return value\n * from the tech.\n *\n * @param {undefined|Promise} val\n * The return value from the tech.\n */\n ;\n\n _proto.runPlayCallbacks_ = function runPlayCallbacks_(val) {\n var callbacks = this.playCallbacks_.slice(0);\n this.playCallbacks_ = []; // clear play terminatedQueue since we finished a real play\n\n this.playTerminatedQueue_ = [];\n callbacks.forEach(function (cb) {\n cb(val);\n });\n }\n /**\n * Pause the video playback\n *\n * @return {Player}\n * A reference to the player object this function was called on\n */\n ;\n\n _proto.pause = function pause() {\n this.techCall_('pause');\n }\n /**\n * Check if the player is paused or has yet to play\n *\n * @return {boolean}\n * - false: if the media is currently playing\n * - true: if media is not currently playing\n */\n ;\n\n _proto.paused = function paused() {\n // The initial state of paused should be true (in Safari it's actually false)\n return this.techGet_('paused') === false ? false : true;\n }\n /**\n * Get a TimeRange object representing the current ranges of time that the user\n * has played.\n *\n * @return {TimeRange}\n * A time range object that represents all the increments of time that have\n * been played.\n */\n ;\n\n _proto.played = function played() {\n return this.techGet_('played') || createTimeRanges(0, 0);\n }\n /**\n * Returns whether or not the user is \"scrubbing\". Scrubbing is\n * when the user has clicked the progress bar handle and is\n * dragging it along the progress bar.\n *\n * @param {boolean} [isScrubbing]\n * whether the user is or is not scrubbing\n *\n * @return {boolean}\n * The value of scrubbing when getting\n */\n ;\n\n _proto.scrubbing = function scrubbing(isScrubbing) {\n if (typeof isScrubbing === 'undefined') {\n return this.scrubbing_;\n }\n\n this.scrubbing_ = !!isScrubbing;\n this.techCall_('setScrubbing', this.scrubbing_);\n\n if (isScrubbing) {\n this.addClass('vjs-scrubbing');\n } else {\n this.removeClass('vjs-scrubbing');\n }\n }\n /**\n * Get or set the current time (in seconds)\n *\n * @param {number|string} [seconds]\n * The time to seek to in seconds\n *\n * @return {number}\n * - the current time in seconds when getting\n */\n ;\n\n _proto.currentTime = function currentTime(seconds) {\n if (typeof seconds !== 'undefined') {\n if (seconds < 0) {\n seconds = 0;\n }\n\n if (!this.isReady_ || this.changingSrc_ || !this.tech_ || !this.tech_.isReady_) {\n this.cache_.initTime = seconds;\n this.off('canplay', this.boundApplyInitTime_);\n this.one('canplay', this.boundApplyInitTime_);\n return;\n }\n\n this.techCall_('setCurrentTime', seconds);\n this.cache_.initTime = 0;\n return;\n } // cache last currentTime and return. default to 0 seconds\n //\n // Caching the currentTime is meant to prevent a massive amount of reads on the tech's\n // currentTime when scrubbing, but may not provide much performance benefit afterall.\n // Should be tested. Also something has to read the actual current time or the cache will\n // never get updated.\n\n\n this.cache_.currentTime = this.techGet_('currentTime') || 0;\n return this.cache_.currentTime;\n }\n /**\n * Apply the value of initTime stored in cache as currentTime.\n *\n * @private\n */\n ;\n\n _proto.applyInitTime_ = function applyInitTime_() {\n this.currentTime(this.cache_.initTime);\n }\n /**\n * Normally gets the length in time of the video in seconds;\n * in all but the rarest use cases an argument will NOT be passed to the method\n *\n * > **NOTE**: The video must have started loading before the duration can be\n * known, and depending on preload behaviour may not be known until the video starts\n * playing.\n *\n * @fires Player#durationchange\n *\n * @param {number} [seconds]\n * The duration of the video to set in seconds\n *\n * @return {number}\n * - The duration of the video in seconds when getting\n */\n ;\n\n _proto.duration = function duration(seconds) {\n if (seconds === undefined) {\n // return NaN if the duration is not known\n return this.cache_.duration !== undefined ? this.cache_.duration : NaN;\n }\n\n seconds = parseFloat(seconds); // Standardize on Infinity for signaling video is live\n\n if (seconds < 0) {\n seconds = Infinity;\n }\n\n if (seconds !== this.cache_.duration) {\n // Cache the last set value for optimized scrubbing (esp. Flash)\n // TODO: Required for techs other than Flash?\n this.cache_.duration = seconds;\n\n if (seconds === Infinity) {\n this.addClass('vjs-live');\n } else {\n this.removeClass('vjs-live');\n }\n\n if (!isNaN(seconds)) {\n // Do not fire durationchange unless the duration value is known.\n // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}\n\n /**\n * @event Player#durationchange\n * @type {EventTarget~Event}\n */\n this.trigger('durationchange');\n }\n }\n }\n /**\n * Calculates how much time is left in the video. Not part\n * of the native video API.\n *\n * @return {number}\n * The time remaining in seconds\n */\n ;\n\n _proto.remainingTime = function remainingTime() {\n return this.duration() - this.currentTime();\n }\n /**\n * A remaining time function that is intented to be used when\n * the time is to be displayed directly to the user.\n *\n * @return {number}\n * The rounded time remaining in seconds\n */\n ;\n\n _proto.remainingTimeDisplay = function remainingTimeDisplay() {\n return Math.floor(this.duration()) - Math.floor(this.currentTime());\n } //\n // Kind of like an array of portions of the video that have been downloaded.\n\n /**\n * Get a TimeRange object with an array of the times of the video\n * that have been downloaded. If you just want the percent of the\n * video that's been downloaded, use bufferedPercent.\n *\n * @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered}\n *\n * @return {TimeRange}\n * A mock TimeRange object (following HTML spec)\n */\n ;\n\n _proto.buffered = function buffered() {\n var buffered = this.techGet_('buffered');\n\n if (!buffered || !buffered.length) {\n buffered = createTimeRanges(0, 0);\n }\n\n return buffered;\n }\n /**\n * Get the percent (as a decimal) of the video that's been downloaded.\n * This method is not a part of the native HTML video API.\n *\n * @return {number}\n * A decimal between 0 and 1 representing the percent\n * that is buffered 0 being 0% and 1 being 100%\n */\n ;\n\n _proto.bufferedPercent = function bufferedPercent$1() {\n return bufferedPercent(this.buffered(), this.duration());\n }\n /**\n * Get the ending time of the last buffered time range\n * This is used in the progress bar to encapsulate all time ranges.\n *\n * @return {number}\n * The end of the last buffered time range\n */\n ;\n\n _proto.bufferedEnd = function bufferedEnd() {\n var buffered = this.buffered();\n var duration = this.duration();\n var end = buffered.end(buffered.length - 1);\n\n if (end > duration) {\n end = duration;\n }\n\n return end;\n }\n /**\n * Get or set the current volume of the media\n *\n * @param {number} [percentAsDecimal]\n * The new volume as a decimal percent:\n * - 0 is muted/0%/off\n * - 1.0 is 100%/full\n * - 0.5 is half volume or 50%\n *\n * @return {number}\n * The current volume as a percent when getting\n */\n ;\n\n _proto.volume = function volume(percentAsDecimal) {\n var vol;\n\n if (percentAsDecimal !== undefined) {\n // Force value to between 0 and 1\n vol = Math.max(0, Math.min(1, parseFloat(percentAsDecimal)));\n this.cache_.volume = vol;\n this.techCall_('setVolume', vol);\n\n if (vol > 0) {\n this.lastVolume_(vol);\n }\n\n return;\n } // Default to 1 when returning current volume.\n\n\n vol = parseFloat(this.techGet_('volume'));\n return isNaN(vol) ? 1 : vol;\n }\n /**\n * Get the current muted state, or turn mute on or off\n *\n * @param {boolean} [muted]\n * - true to mute\n * - false to unmute\n *\n * @return {boolean}\n * - true if mute is on and getting\n * - false if mute is off and getting\n */\n ;\n\n _proto.muted = function muted(_muted) {\n if (_muted !== undefined) {\n this.techCall_('setMuted', _muted);\n return;\n }\n\n return this.techGet_('muted') || false;\n }\n /**\n * Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted\n * indicates the state of muted on initial playback.\n *\n * ```js\n * var myPlayer = videojs('some-player-id');\n *\n * myPlayer.src(\"http://www.example.com/path/to/video.mp4\");\n *\n * // get, should be false\n * console.log(myPlayer.defaultMuted());\n * // set to true\n * myPlayer.defaultMuted(true);\n * // get should be true\n * console.log(myPlayer.defaultMuted());\n * ```\n *\n * @param {boolean} [defaultMuted]\n * - true to mute\n * - false to unmute\n *\n * @return {boolean|Player}\n * - true if defaultMuted is on and getting\n * - false if defaultMuted is off and getting\n * - A reference to the current player when setting\n */\n ;\n\n _proto.defaultMuted = function defaultMuted(_defaultMuted) {\n if (_defaultMuted !== undefined) {\n return this.techCall_('setDefaultMuted', _defaultMuted);\n }\n\n return this.techGet_('defaultMuted') || false;\n }\n /**\n * Get the last volume, or set it\n *\n * @param {number} [percentAsDecimal]\n * The new last volume as a decimal percent:\n * - 0 is muted/0%/off\n * - 1.0 is 100%/full\n * - 0.5 is half volume or 50%\n *\n * @return {number}\n * the current value of lastVolume as a percent when getting\n *\n * @private\n */\n ;\n\n _proto.lastVolume_ = function lastVolume_(percentAsDecimal) {\n if (percentAsDecimal !== undefined && percentAsDecimal !== 0) {\n this.cache_.lastVolume = percentAsDecimal;\n return;\n }\n\n return this.cache_.lastVolume;\n }\n /**\n * Check if current tech can support native fullscreen\n * (e.g. with built in controls like iOS)\n *\n * @return {boolean}\n * if native fullscreen is supported\n */\n ;\n\n _proto.supportsFullScreen = function supportsFullScreen() {\n return this.techGet_('supportsFullScreen') || false;\n }\n /**\n * Check if the player is in fullscreen mode or tell the player that it\n * is or is not in fullscreen mode.\n *\n * > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official\n * property and instead document.fullscreenElement is used. But isFullscreen is\n * still a valuable property for internal player workings.\n *\n * @param {boolean} [isFS]\n * Set the players current fullscreen state\n *\n * @return {boolean}\n * - true if fullscreen is on and getting\n * - false if fullscreen is off and getting\n */\n ;\n\n _proto.isFullscreen = function isFullscreen(isFS) {\n if (isFS !== undefined) {\n var oldValue = this.isFullscreen_;\n this.isFullscreen_ = Boolean(isFS); // if we changed fullscreen state and we're in prefixed mode, trigger fullscreenchange\n // this is the only place where we trigger fullscreenchange events for older browsers\n // fullWindow mode is treated as a prefixed event and will get a fullscreenchange event as well\n\n if (this.isFullscreen_ !== oldValue && this.fsApi_.prefixed) {\n /**\n * @event Player#fullscreenchange\n * @type {EventTarget~Event}\n */\n this.trigger('fullscreenchange');\n }\n\n this.toggleFullscreenClass_();\n return;\n }\n\n return this.isFullscreen_;\n }\n /**\n * Increase the size of the video to full screen\n * In some browsers, full screen is not supported natively, so it enters\n * \"full window mode\", where the video fills the browser window.\n * In browsers and devices that support native full screen, sometimes the\n * browser's default controls will be shown, and not the Video.js custom skin.\n * This includes most mobile devices (iOS, Android) and older versions of\n * Safari.\n *\n * @param {Object} [fullscreenOptions]\n * Override the player fullscreen options\n *\n * @fires Player#fullscreenchange\n */\n ;\n\n _proto.requestFullscreen = function requestFullscreen(fullscreenOptions) {\n var PromiseClass = this.options_.Promise || window$1.Promise;\n\n if (PromiseClass) {\n var self = this;\n return new PromiseClass(function (resolve, reject) {\n function offHandler() {\n self.off('fullscreenerror', errorHandler);\n self.off('fullscreenchange', changeHandler);\n }\n\n function changeHandler() {\n offHandler();\n resolve();\n }\n\n function errorHandler(e, err) {\n offHandler();\n reject(err);\n }\n\n self.one('fullscreenchange', changeHandler);\n self.one('fullscreenerror', errorHandler);\n var promise = self.requestFullscreenHelper_(fullscreenOptions);\n\n if (promise) {\n promise.then(offHandler, offHandler);\n promise.then(resolve, reject);\n }\n });\n }\n\n return this.requestFullscreenHelper_();\n };\n\n _proto.requestFullscreenHelper_ = function requestFullscreenHelper_(fullscreenOptions) {\n var _this12 = this;\n\n var fsOptions; // Only pass fullscreen options to requestFullscreen in spec-compliant browsers.\n // Use defaults or player configured option unless passed directly to this method.\n\n if (!this.fsApi_.prefixed) {\n fsOptions = this.options_.fullscreen && this.options_.fullscreen.options || {};\n\n if (fullscreenOptions !== undefined) {\n fsOptions = fullscreenOptions;\n }\n } // This method works as follows:\n // 1. if a fullscreen api is available, use it\n // 1. call requestFullscreen with potential options\n // 2. if we got a promise from above, use it to update isFullscreen()\n // 2. otherwise, if the tech supports fullscreen, call `enterFullScreen` on it.\n // This is particularly used for iPhone, older iPads, and non-safari browser on iOS.\n // 3. otherwise, use \"fullWindow\" mode\n\n\n if (this.fsApi_.requestFullscreen) {\n var promise = this.el_[this.fsApi_.requestFullscreen](fsOptions);\n\n if (promise) {\n promise.then(function () {\n return _this12.isFullscreen(true);\n }, function () {\n return _this12.isFullscreen(false);\n });\n }\n\n return promise;\n } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {\n // we can't take the video.js controls fullscreen but we can go fullscreen\n // with native controls\n this.techCall_('enterFullScreen');\n } else {\n // fullscreen isn't supported so we'll just stretch the video element to\n // fill the viewport\n this.enterFullWindow();\n }\n }\n /**\n * Return the video to its normal size after having been in full screen mode\n *\n * @fires Player#fullscreenchange\n */\n ;\n\n _proto.exitFullscreen = function exitFullscreen() {\n var PromiseClass = this.options_.Promise || window$1.Promise;\n\n if (PromiseClass) {\n var self = this;\n return new PromiseClass(function (resolve, reject) {\n function offHandler() {\n self.off('fullscreenerror', errorHandler);\n self.off('fullscreenchange', changeHandler);\n }\n\n function changeHandler() {\n offHandler();\n resolve();\n }\n\n function errorHandler(e, err) {\n offHandler();\n reject(err);\n }\n\n self.one('fullscreenchange', changeHandler);\n self.one('fullscreenerror', errorHandler);\n var promise = self.exitFullscreenHelper_();\n\n if (promise) {\n promise.then(offHandler, offHandler); // map the promise to our resolve/reject methods\n\n promise.then(resolve, reject);\n }\n });\n }\n\n return this.exitFullscreenHelper_();\n };\n\n _proto.exitFullscreenHelper_ = function exitFullscreenHelper_() {\n var _this13 = this;\n\n if (this.fsApi_.requestFullscreen) {\n var promise = document[this.fsApi_.exitFullscreen]();\n\n if (promise) {\n // we're splitting the promise here, so, we want to catch the\n // potential error so that this chain doesn't have unhandled errors\n silencePromise(promise.then(function () {\n return _this13.isFullscreen(false);\n }));\n }\n\n return promise;\n } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {\n this.techCall_('exitFullScreen');\n } else {\n this.exitFullWindow();\n }\n }\n /**\n * When fullscreen isn't supported we can stretch the\n * video container to as wide as the browser will let us.\n *\n * @fires Player#enterFullWindow\n */\n ;\n\n _proto.enterFullWindow = function enterFullWindow() {\n this.isFullscreen(true);\n this.isFullWindow = true; // Storing original doc overflow value to return to when fullscreen is off\n\n this.docOrigOverflow = document.documentElement.style.overflow; // Add listener for esc key to exit fullscreen\n\n on(document, 'keydown', this.boundFullWindowOnEscKey_); // Hide any scroll bars\n\n document.documentElement.style.overflow = 'hidden'; // Apply fullscreen styles\n\n addClass(document.body, 'vjs-full-window');\n /**\n * @event Player#enterFullWindow\n * @type {EventTarget~Event}\n */\n\n this.trigger('enterFullWindow');\n }\n /**\n * Check for call to either exit full window or\n * full screen on ESC key\n *\n * @param {string} event\n * Event to check for key press\n */\n ;\n\n _proto.fullWindowOnEscKey = function fullWindowOnEscKey(event) {\n if (keycode.isEventKey(event, 'Esc')) {\n if (this.isFullscreen() === true) {\n if (!this.isFullWindow) {\n this.exitFullscreen();\n } else {\n this.exitFullWindow();\n }\n }\n }\n }\n /**\n * Exit full window\n *\n * @fires Player#exitFullWindow\n */\n ;\n\n _proto.exitFullWindow = function exitFullWindow() {\n this.isFullscreen(false);\n this.isFullWindow = false;\n off(document, 'keydown', this.boundFullWindowOnEscKey_); // Unhide scroll bars.\n\n document.documentElement.style.overflow = this.docOrigOverflow; // Remove fullscreen styles\n\n removeClass(document.body, 'vjs-full-window'); // Resize the box, controller, and poster to original sizes\n // this.positionAll();\n\n /**\n * @event Player#exitFullWindow\n * @type {EventTarget~Event}\n */\n\n this.trigger('exitFullWindow');\n }\n /**\n * Disable Picture-in-Picture mode.\n *\n * @param {boolean} value\n * - true will disable Picture-in-Picture mode\n * - false will enable Picture-in-Picture mode\n */\n ;\n\n _proto.disablePictureInPicture = function disablePictureInPicture(value) {\n if (value === undefined) {\n return this.techGet_('disablePictureInPicture');\n }\n\n this.techCall_('setDisablePictureInPicture', value);\n this.options_.disablePictureInPicture = value;\n this.trigger('disablepictureinpicturechanged');\n }\n /**\n * Check if the player is in Picture-in-Picture mode or tell the player that it\n * is or is not in Picture-in-Picture mode.\n *\n * @param {boolean} [isPiP]\n * Set the players current Picture-in-Picture state\n *\n * @return {boolean}\n * - true if Picture-in-Picture is on and getting\n * - false if Picture-in-Picture is off and getting\n */\n ;\n\n _proto.isInPictureInPicture = function isInPictureInPicture(isPiP) {\n if (isPiP !== undefined) {\n this.isInPictureInPicture_ = !!isPiP;\n this.togglePictureInPictureClass_();\n return;\n }\n\n return !!this.isInPictureInPicture_;\n }\n /**\n * Create a floating video window always on top of other windows so that users may\n * continue consuming media while they interact with other content sites, or\n * applications on their device.\n *\n * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n *\n * @fires Player#enterpictureinpicture\n *\n * @return {Promise}\n * A promise with a Picture-in-Picture window.\n */\n ;\n\n _proto.requestPictureInPicture = function requestPictureInPicture() {\n if ('pictureInPictureEnabled' in document && this.disablePictureInPicture() === false) {\n /**\n * This event fires when the player enters picture in picture mode\n *\n * @event Player#enterpictureinpicture\n * @type {EventTarget~Event}\n */\n return this.techGet_('requestPictureInPicture');\n }\n }\n /**\n * Exit Picture-in-Picture mode.\n *\n * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n *\n * @fires Player#leavepictureinpicture\n *\n * @return {Promise}\n * A promise.\n */\n ;\n\n _proto.exitPictureInPicture = function exitPictureInPicture() {\n if ('pictureInPictureEnabled' in document) {\n /**\n * This event fires when the player leaves picture in picture mode\n *\n * @event Player#leavepictureinpicture\n * @type {EventTarget~Event}\n */\n return document.exitPictureInPicture();\n }\n }\n /**\n * Called when this Player has focus and a key gets pressed down, or when\n * any Component of this player receives a key press that it doesn't handle.\n * This allows player-wide hotkeys (either as defined below, or optionally\n * by an external function).\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n var userActions = this.options_.userActions; // Bail out if hotkeys are not configured.\n\n if (!userActions || !userActions.hotkeys) {\n return;\n } // Function that determines whether or not to exclude an element from\n // hotkeys handling.\n\n\n var excludeElement = function excludeElement(el) {\n var tagName = el.tagName.toLowerCase(); // The first and easiest test is for `contenteditable` elements.\n\n if (el.isContentEditable) {\n return true;\n } // Inputs matching these types will still trigger hotkey handling as\n // they are not text inputs.\n\n\n var allowedInputTypes = ['button', 'checkbox', 'hidden', 'radio', 'reset', 'submit'];\n\n if (tagName === 'input') {\n return allowedInputTypes.indexOf(el.type) === -1;\n } // The final test is by tag name. These tags will be excluded entirely.\n\n\n var excludedTags = ['textarea'];\n return excludedTags.indexOf(tagName) !== -1;\n }; // Bail out if the user is focused on an interactive form element.\n\n\n if (excludeElement(this.el_.ownerDocument.activeElement)) {\n return;\n }\n\n if (typeof userActions.hotkeys === 'function') {\n userActions.hotkeys.call(this, event);\n } else {\n this.handleHotkeys(event);\n }\n }\n /**\n * Called when this Player receives a hotkey keydown event.\n * Supported player-wide hotkeys are:\n *\n * f - toggle fullscreen\n * m - toggle mute\n * k or Space - toggle play/pause\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n */\n ;\n\n _proto.handleHotkeys = function handleHotkeys(event) {\n var hotkeys = this.options_.userActions ? this.options_.userActions.hotkeys : {}; // set fullscreenKey, muteKey, playPauseKey from `hotkeys`, use defaults if not set\n\n var _hotkeys$fullscreenKe = hotkeys.fullscreenKey,\n fullscreenKey = _hotkeys$fullscreenKe === void 0 ? function (keydownEvent) {\n return keycode.isEventKey(keydownEvent, 'f');\n } : _hotkeys$fullscreenKe,\n _hotkeys$muteKey = hotkeys.muteKey,\n muteKey = _hotkeys$muteKey === void 0 ? function (keydownEvent) {\n return keycode.isEventKey(keydownEvent, 'm');\n } : _hotkeys$muteKey,\n _hotkeys$playPauseKey = hotkeys.playPauseKey,\n playPauseKey = _hotkeys$playPauseKey === void 0 ? function (keydownEvent) {\n return keycode.isEventKey(keydownEvent, 'k') || keycode.isEventKey(keydownEvent, 'Space');\n } : _hotkeys$playPauseKey;\n\n if (fullscreenKey.call(this, event)) {\n event.preventDefault();\n event.stopPropagation();\n var FSToggle = Component$1.getComponent('FullscreenToggle');\n\n if (document[this.fsApi_.fullscreenEnabled] !== false) {\n FSToggle.prototype.handleClick.call(this, event);\n }\n } else if (muteKey.call(this, event)) {\n event.preventDefault();\n event.stopPropagation();\n var MuteToggle = Component$1.getComponent('MuteToggle');\n MuteToggle.prototype.handleClick.call(this, event);\n } else if (playPauseKey.call(this, event)) {\n event.preventDefault();\n event.stopPropagation();\n var PlayToggle = Component$1.getComponent('PlayToggle');\n PlayToggle.prototype.handleClick.call(this, event);\n }\n }\n /**\n * Check whether the player can play a given mimetype\n *\n * @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype\n *\n * @param {string} type\n * The mimetype to check\n *\n * @return {string}\n * 'probably', 'maybe', or '' (empty string)\n */\n ;\n\n _proto.canPlayType = function canPlayType(type) {\n var can; // Loop through each playback technology in the options order\n\n for (var i = 0, j = this.options_.techOrder; i < j.length; i++) {\n var techName = j[i];\n var tech = Tech.getTech(techName); // Support old behavior of techs being registered as components.\n // Remove once that deprecated behavior is removed.\n\n if (!tech) {\n tech = Component$1.getComponent(techName);\n } // Check if the current tech is defined before continuing\n\n\n if (!tech) {\n log$1.error(\"The \\\"\" + techName + \"\\\" tech is undefined. Skipped browser support check for that tech.\");\n continue;\n } // Check if the browser supports this technology\n\n\n if (tech.isSupported()) {\n can = tech.canPlayType(type);\n\n if (can) {\n return can;\n }\n }\n }\n\n return '';\n }\n /**\n * Select source based on tech-order or source-order\n * Uses source-order selection if `options.sourceOrder` is truthy. Otherwise,\n * defaults to tech-order selection\n *\n * @param {Array} sources\n * The sources for a media asset\n *\n * @return {Object|boolean}\n * Object of source and tech order or false\n */\n ;\n\n _proto.selectSource = function selectSource(sources) {\n var _this14 = this;\n\n // Get only the techs specified in `techOrder` that exist and are supported by the\n // current platform\n var techs = this.options_.techOrder.map(function (techName) {\n return [techName, Tech.getTech(techName)];\n }).filter(function (_ref) {\n var techName = _ref[0],\n tech = _ref[1];\n\n // Check if the current tech is defined before continuing\n if (tech) {\n // Check if the browser supports this technology\n return tech.isSupported();\n }\n\n log$1.error(\"The \\\"\" + techName + \"\\\" tech is undefined. Skipped browser support check for that tech.\");\n return false;\n }); // Iterate over each `innerArray` element once per `outerArray` element and execute\n // `tester` with both. If `tester` returns a non-falsy value, exit early and return\n // that value.\n\n var findFirstPassingTechSourcePair = function findFirstPassingTechSourcePair(outerArray, innerArray, tester) {\n var found;\n outerArray.some(function (outerChoice) {\n return innerArray.some(function (innerChoice) {\n found = tester(outerChoice, innerChoice);\n\n if (found) {\n return true;\n }\n });\n });\n return found;\n };\n\n var foundSourceAndTech;\n\n var flip = function flip(fn) {\n return function (a, b) {\n return fn(b, a);\n };\n };\n\n var finder = function finder(_ref2, source) {\n var techName = _ref2[0],\n tech = _ref2[1];\n\n if (tech.canPlaySource(source, _this14.options_[techName.toLowerCase()])) {\n return {\n source: source,\n tech: techName\n };\n }\n }; // Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources\n // to select from them based on their priority.\n\n\n if (this.options_.sourceOrder) {\n // Source-first ordering\n foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder));\n } else {\n // Tech-first ordering\n foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder);\n }\n\n return foundSourceAndTech || false;\n }\n /**\n * Executes source setting and getting logic\n *\n * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]\n * A SourceObject, an array of SourceObjects, or a string referencing\n * a URL to a media source. It is _highly recommended_ that an object\n * or array of objects is used here, so that source selection\n * algorithms can take the `type` into account.\n *\n * If not provided, this method acts as a getter.\n * @param {boolean} isRetry\n * Indicates whether this is being called internally as a result of a retry\n *\n * @return {string|undefined}\n * If the `source` argument is missing, returns the current source\n * URL. Otherwise, returns nothing/undefined.\n */\n ;\n\n _proto.handleSrc_ = function handleSrc_(source, isRetry) {\n var _this15 = this;\n\n // getter usage\n if (typeof source === 'undefined') {\n return this.cache_.src || '';\n } // Reset retry behavior for new source\n\n\n if (this.resetRetryOnError_) {\n this.resetRetryOnError_();\n } // filter out invalid sources and turn our source into\n // an array of source objects\n\n\n var sources = filterSource(source); // if a source was passed in then it is invalid because\n // it was filtered to a zero length Array. So we have to\n // show an error\n\n if (!sources.length) {\n this.setTimeout(function () {\n this.error({\n code: 4,\n message: this.options_.notSupportedMessage\n });\n }, 0);\n return;\n } // initial sources\n\n\n this.changingSrc_ = true; // Only update the cached source list if we are not retrying a new source after error,\n // since in that case we want to include the failed source(s) in the cache\n\n if (!isRetry) {\n this.cache_.sources = sources;\n }\n\n this.updateSourceCaches_(sources[0]); // middlewareSource is the source after it has been changed by middleware\n\n setSource(this, sources[0], function (middlewareSource, mws) {\n _this15.middleware_ = mws; // since sourceSet is async we have to update the cache again after we select a source since\n // the source that is selected could be out of order from the cache update above this callback.\n\n if (!isRetry) {\n _this15.cache_.sources = sources;\n }\n\n _this15.updateSourceCaches_(middlewareSource);\n\n var err = _this15.src_(middlewareSource);\n\n if (err) {\n if (sources.length > 1) {\n return _this15.handleSrc_(sources.slice(1));\n }\n\n _this15.changingSrc_ = false; // We need to wrap this in a timeout to give folks a chance to add error event handlers\n\n _this15.setTimeout(function () {\n this.error({\n code: 4,\n message: this.options_.notSupportedMessage\n });\n }, 0); // we could not find an appropriate tech, but let's still notify the delegate that this is it\n // this needs a better comment about why this is needed\n\n\n _this15.triggerReady();\n\n return;\n }\n\n setTech(mws, _this15.tech_);\n }); // Try another available source if this one fails before playback.\n\n if (this.options_.retryOnError && sources.length > 1) {\n var retry = function retry() {\n // Remove the error modal\n _this15.error(null);\n\n _this15.handleSrc_(sources.slice(1), true);\n };\n\n var stopListeningForErrors = function stopListeningForErrors() {\n _this15.off('error', retry);\n };\n\n this.one('error', retry);\n this.one('playing', stopListeningForErrors);\n\n this.resetRetryOnError_ = function () {\n _this15.off('error', retry);\n\n _this15.off('playing', stopListeningForErrors);\n };\n }\n }\n /**\n * Get or set the video source.\n *\n * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]\n * A SourceObject, an array of SourceObjects, or a string referencing\n * a URL to a media source. It is _highly recommended_ that an object\n * or array of objects is used here, so that source selection\n * algorithms can take the `type` into account.\n *\n * If not provided, this method acts as a getter.\n *\n * @return {string|undefined}\n * If the `source` argument is missing, returns the current source\n * URL. Otherwise, returns nothing/undefined.\n */\n ;\n\n _proto.src = function src(source) {\n return this.handleSrc_(source, false);\n }\n /**\n * Set the source object on the tech, returns a boolean that indicates whether\n * there is a tech that can play the source or not\n *\n * @param {Tech~SourceObject} source\n * The source object to set on the Tech\n *\n * @return {boolean}\n * - True if there is no Tech to playback this source\n * - False otherwise\n *\n * @private\n */\n ;\n\n _proto.src_ = function src_(source) {\n var _this16 = this;\n\n var sourceTech = this.selectSource([source]);\n\n if (!sourceTech) {\n return true;\n }\n\n if (!titleCaseEquals(sourceTech.tech, this.techName_)) {\n this.changingSrc_ = true; // load this technology with the chosen source\n\n this.loadTech_(sourceTech.tech, sourceTech.source);\n this.tech_.ready(function () {\n _this16.changingSrc_ = false;\n });\n return false;\n } // wait until the tech is ready to set the source\n // and set it synchronously if possible (#2326)\n\n\n this.ready(function () {\n // The setSource tech method was added with source handlers\n // so older techs won't support it\n // We need to check the direct prototype for the case where subclasses\n // of the tech do not support source handlers\n if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) {\n this.techCall_('setSource', source);\n } else {\n this.techCall_('src', source.src);\n }\n\n this.changingSrc_ = false;\n }, true);\n return false;\n }\n /**\n * Begin loading the src data.\n */\n ;\n\n _proto.load = function load() {\n this.techCall_('load');\n }\n /**\n * Reset the player. Loads the first tech in the techOrder,\n * removes all the text tracks in the existing `tech`,\n * and calls `reset` on the `tech`.\n */\n ;\n\n _proto.reset = function reset() {\n var _this17 = this;\n\n var PromiseClass = this.options_.Promise || window$1.Promise;\n\n if (this.paused() || !PromiseClass) {\n this.doReset_();\n } else {\n var playPromise = this.play();\n silencePromise(playPromise.then(function () {\n return _this17.doReset_();\n }));\n }\n };\n\n _proto.doReset_ = function doReset_() {\n if (this.tech_) {\n this.tech_.clearTracks('text');\n }\n\n this.resetCache_();\n this.poster('');\n this.loadTech_(this.options_.techOrder[0], null);\n this.techCall_('reset');\n this.resetControlBarUI_();\n\n if (isEvented(this)) {\n this.trigger('playerreset');\n }\n }\n /**\n * Reset Control Bar's UI by calling sub-methods that reset\n * all of Control Bar's components\n */\n ;\n\n _proto.resetControlBarUI_ = function resetControlBarUI_() {\n this.resetProgressBar_();\n this.resetPlaybackRate_();\n this.resetVolumeBar_();\n }\n /**\n * Reset tech's progress so progress bar is reset in the UI\n */\n ;\n\n _proto.resetProgressBar_ = function resetProgressBar_() {\n this.currentTime(0);\n\n var _ref3 = this.controlBar || {},\n durationDisplay = _ref3.durationDisplay,\n remainingTimeDisplay = _ref3.remainingTimeDisplay;\n\n if (durationDisplay) {\n durationDisplay.updateContent();\n }\n\n if (remainingTimeDisplay) {\n remainingTimeDisplay.updateContent();\n }\n }\n /**\n * Reset Playback ratio\n */\n ;\n\n _proto.resetPlaybackRate_ = function resetPlaybackRate_() {\n this.playbackRate(this.defaultPlaybackRate());\n this.handleTechRateChange_();\n }\n /**\n * Reset Volume bar\n */\n ;\n\n _proto.resetVolumeBar_ = function resetVolumeBar_() {\n this.volume(1.0);\n this.trigger('volumechange');\n }\n /**\n * Returns all of the current source objects.\n *\n * @return {Tech~SourceObject[]}\n * The current source objects\n */\n ;\n\n _proto.currentSources = function currentSources() {\n var source = this.currentSource();\n var sources = []; // assume `{}` or `{ src }`\n\n if (Object.keys(source).length !== 0) {\n sources.push(source);\n }\n\n return this.cache_.sources || sources;\n }\n /**\n * Returns the current source object.\n *\n * @return {Tech~SourceObject}\n * The current source object\n */\n ;\n\n _proto.currentSource = function currentSource() {\n return this.cache_.source || {};\n }\n /**\n * Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4\n * Can be used in conjunction with `currentType` to assist in rebuilding the current source object.\n *\n * @return {string}\n * The current source\n */\n ;\n\n _proto.currentSrc = function currentSrc() {\n return this.currentSource() && this.currentSource().src || '';\n }\n /**\n * Get the current source type e.g. video/mp4\n * This can allow you rebuild the current source object so that you could load the same\n * source and tech later\n *\n * @return {string}\n * The source MIME type\n */\n ;\n\n _proto.currentType = function currentType() {\n return this.currentSource() && this.currentSource().type || '';\n }\n /**\n * Get or set the preload attribute\n *\n * @param {boolean} [value]\n * - true means that we should preload\n * - false means that we should not preload\n *\n * @return {string}\n * The preload attribute value when getting\n */\n ;\n\n _proto.preload = function preload(value) {\n if (value !== undefined) {\n this.techCall_('setPreload', value);\n this.options_.preload = value;\n return;\n }\n\n return this.techGet_('preload');\n }\n /**\n * Get or set the autoplay option. When this is a boolean it will\n * modify the attribute on the tech. When this is a string the attribute on\n * the tech will be removed and `Player` will handle autoplay on loadstarts.\n *\n * @param {boolean|string} [value]\n * - true: autoplay using the browser behavior\n * - false: do not autoplay\n * - 'play': call play() on every loadstart\n * - 'muted': call muted() then play() on every loadstart\n * - 'any': call play() on every loadstart. if that fails call muted() then play().\n * - *: values other than those listed here will be set `autoplay` to true\n *\n * @return {boolean|string}\n * The current value of autoplay when getting\n */\n ;\n\n _proto.autoplay = function autoplay(value) {\n // getter usage\n if (value === undefined) {\n return this.options_.autoplay || false;\n }\n\n var techAutoplay; // if the value is a valid string set it to that, or normalize `true` to 'play', if need be\n\n if (typeof value === 'string' && /(any|play|muted)/.test(value) || value === true && this.options_.normalizeAutoplay) {\n this.options_.autoplay = value;\n this.manualAutoplay_(typeof value === 'string' ? value : 'play');\n techAutoplay = false; // any falsy value sets autoplay to false in the browser,\n // lets do the same\n } else if (!value) {\n this.options_.autoplay = false; // any other value (ie truthy) sets autoplay to true\n } else {\n this.options_.autoplay = true;\n }\n\n techAutoplay = typeof techAutoplay === 'undefined' ? this.options_.autoplay : techAutoplay; // if we don't have a tech then we do not queue up\n // a setAutoplay call on tech ready. We do this because the\n // autoplay option will be passed in the constructor and we\n // do not need to set it twice\n\n if (this.tech_) {\n this.techCall_('setAutoplay', techAutoplay);\n }\n }\n /**\n * Set or unset the playsinline attribute.\n * Playsinline tells the browser that non-fullscreen playback is preferred.\n *\n * @param {boolean} [value]\n * - true means that we should try to play inline by default\n * - false means that we should use the browser's default playback mode,\n * which in most cases is inline. iOS Safari is a notable exception\n * and plays fullscreen by default.\n *\n * @return {string|Player}\n * - the current value of playsinline\n * - the player when setting\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n */\n ;\n\n _proto.playsinline = function playsinline(value) {\n if (value !== undefined) {\n this.techCall_('setPlaysinline', value);\n this.options_.playsinline = value;\n return this;\n }\n\n return this.techGet_('playsinline');\n }\n /**\n * Get or set the loop attribute on the video element.\n *\n * @param {boolean} [value]\n * - true means that we should loop the video\n * - false means that we should not loop the video\n *\n * @return {boolean}\n * The current value of loop when getting\n */\n ;\n\n _proto.loop = function loop(value) {\n if (value !== undefined) {\n this.techCall_('setLoop', value);\n this.options_.loop = value;\n return;\n }\n\n return this.techGet_('loop');\n }\n /**\n * Get or set the poster image source url\n *\n * @fires Player#posterchange\n *\n * @param {string} [src]\n * Poster image source URL\n *\n * @return {string}\n * The current value of poster when getting\n */\n ;\n\n _proto.poster = function poster(src) {\n if (src === undefined) {\n return this.poster_;\n } // The correct way to remove a poster is to set as an empty string\n // other falsey values will throw errors\n\n\n if (!src) {\n src = '';\n }\n\n if (src === this.poster_) {\n return;\n } // update the internal poster variable\n\n\n this.poster_ = src; // update the tech's poster\n\n this.techCall_('setPoster', src);\n this.isPosterFromTech_ = false; // alert components that the poster has been set\n\n /**\n * This event fires when the poster image is changed on the player.\n *\n * @event Player#posterchange\n * @type {EventTarget~Event}\n */\n\n this.trigger('posterchange');\n }\n /**\n * Some techs (e.g. YouTube) can provide a poster source in an\n * asynchronous way. We want the poster component to use this\n * poster source so that it covers up the tech's controls.\n * (YouTube's play button). However we only want to use this\n * source if the player user hasn't set a poster through\n * the normal APIs.\n *\n * @fires Player#posterchange\n * @listens Tech#posterchange\n * @private\n */\n ;\n\n _proto.handleTechPosterChange_ = function handleTechPosterChange_() {\n if ((!this.poster_ || this.options_.techCanOverridePoster) && this.tech_ && this.tech_.poster) {\n var newPoster = this.tech_.poster() || '';\n\n if (newPoster !== this.poster_) {\n this.poster_ = newPoster;\n this.isPosterFromTech_ = true; // Let components know the poster has changed\n\n this.trigger('posterchange');\n }\n }\n }\n /**\n * Get or set whether or not the controls are showing.\n *\n * @fires Player#controlsenabled\n *\n * @param {boolean} [bool]\n * - true to turn controls on\n * - false to turn controls off\n *\n * @return {boolean}\n * The current value of controls when getting\n */\n ;\n\n _proto.controls = function controls(bool) {\n if (bool === undefined) {\n return !!this.controls_;\n }\n\n bool = !!bool; // Don't trigger a change event unless it actually changed\n\n if (this.controls_ === bool) {\n return;\n }\n\n this.controls_ = bool;\n\n if (this.usingNativeControls()) {\n this.techCall_('setControls', bool);\n }\n\n if (this.controls_) {\n this.removeClass('vjs-controls-disabled');\n this.addClass('vjs-controls-enabled');\n /**\n * @event Player#controlsenabled\n * @type {EventTarget~Event}\n */\n\n this.trigger('controlsenabled');\n\n if (!this.usingNativeControls()) {\n this.addTechControlsListeners_();\n }\n } else {\n this.removeClass('vjs-controls-enabled');\n this.addClass('vjs-controls-disabled');\n /**\n * @event Player#controlsdisabled\n * @type {EventTarget~Event}\n */\n\n this.trigger('controlsdisabled');\n\n if (!this.usingNativeControls()) {\n this.removeTechControlsListeners_();\n }\n }\n }\n /**\n * Toggle native controls on/off. Native controls are the controls built into\n * devices (e.g. default iPhone controls) or other techs\n * (e.g. Vimeo Controls)\n * **This should only be set by the current tech, because only the tech knows\n * if it can support native controls**\n *\n * @fires Player#usingnativecontrols\n * @fires Player#usingcustomcontrols\n *\n * @param {boolean} [bool]\n * - true to turn native controls on\n * - false to turn native controls off\n *\n * @return {boolean}\n * The current value of native controls when getting\n */\n ;\n\n _proto.usingNativeControls = function usingNativeControls(bool) {\n if (bool === undefined) {\n return !!this.usingNativeControls_;\n }\n\n bool = !!bool; // Don't trigger a change event unless it actually changed\n\n if (this.usingNativeControls_ === bool) {\n return;\n }\n\n this.usingNativeControls_ = bool;\n\n if (this.usingNativeControls_) {\n this.addClass('vjs-using-native-controls');\n /**\n * player is using the native device controls\n *\n * @event Player#usingnativecontrols\n * @type {EventTarget~Event}\n */\n\n this.trigger('usingnativecontrols');\n } else {\n this.removeClass('vjs-using-native-controls');\n /**\n * player is using the custom HTML controls\n *\n * @event Player#usingcustomcontrols\n * @type {EventTarget~Event}\n */\n\n this.trigger('usingcustomcontrols');\n }\n }\n /**\n * Set or get the current MediaError\n *\n * @fires Player#error\n *\n * @param {MediaError|string|number} [err]\n * A MediaError or a string/number to be turned\n * into a MediaError\n *\n * @return {MediaError|null}\n * The current MediaError when getting (or null)\n */\n ;\n\n _proto.error = function error(err) {\n var _this18 = this;\n\n if (err === undefined) {\n return this.error_ || null;\n } // allow hooks to modify error object\n\n\n hooks('beforeerror').forEach(function (hookFunction) {\n var newErr = hookFunction(_this18, err);\n\n if (!(isObject(newErr) && !Array.isArray(newErr) || typeof newErr === 'string' || typeof newErr === 'number' || newErr === null)) {\n _this18.log.error('please return a value that MediaError expects in beforeerror hooks');\n\n return;\n }\n\n err = newErr;\n }); // Suppress the first error message for no compatible source until\n // user interaction\n\n if (this.options_.suppressNotSupportedError && err && err.code === 4) {\n var triggerSuppressedError = function triggerSuppressedError() {\n this.error(err);\n };\n\n this.options_.suppressNotSupportedError = false;\n this.any(['click', 'touchstart'], triggerSuppressedError);\n this.one('loadstart', function () {\n this.off(['click', 'touchstart'], triggerSuppressedError);\n });\n return;\n } // restoring to default\n\n\n if (err === null) {\n this.error_ = err;\n this.removeClass('vjs-error');\n\n if (this.errorDisplay) {\n this.errorDisplay.close();\n }\n\n return;\n }\n\n this.error_ = new MediaError(err); // add the vjs-error classname to the player\n\n this.addClass('vjs-error'); // log the name of the error type and any message\n // IE11 logs \"[object object]\" and required you to expand message to see error object\n\n log$1.error(\"(CODE:\" + this.error_.code + \" \" + MediaError.errorTypes[this.error_.code] + \")\", this.error_.message, this.error_);\n /**\n * @event Player#error\n * @type {EventTarget~Event}\n */\n\n this.trigger('error'); // notify hooks of the per player error\n\n hooks('error').forEach(function (hookFunction) {\n return hookFunction(_this18, _this18.error_);\n });\n return;\n }\n /**\n * Report user activity\n *\n * @param {Object} event\n * Event object\n */\n ;\n\n _proto.reportUserActivity = function reportUserActivity(event) {\n this.userActivity_ = true;\n }\n /**\n * Get/set if user is active\n *\n * @fires Player#useractive\n * @fires Player#userinactive\n *\n * @param {boolean} [bool]\n * - true if the user is active\n * - false if the user is inactive\n *\n * @return {boolean}\n * The current value of userActive when getting\n */\n ;\n\n _proto.userActive = function userActive(bool) {\n if (bool === undefined) {\n return this.userActive_;\n }\n\n bool = !!bool;\n\n if (bool === this.userActive_) {\n return;\n }\n\n this.userActive_ = bool;\n\n if (this.userActive_) {\n this.userActivity_ = true;\n this.removeClass('vjs-user-inactive');\n this.addClass('vjs-user-active');\n /**\n * @event Player#useractive\n * @type {EventTarget~Event}\n */\n\n this.trigger('useractive');\n return;\n } // Chrome/Safari/IE have bugs where when you change the cursor it can\n // trigger a mousemove event. This causes an issue when you're hiding\n // the cursor when the user is inactive, and a mousemove signals user\n // activity. Making it impossible to go into inactive mode. Specifically\n // this happens in fullscreen when we really need to hide the cursor.\n //\n // When this gets resolved in ALL browsers it can be removed\n // https://code.google.com/p/chromium/issues/detail?id=103041\n\n\n if (this.tech_) {\n this.tech_.one('mousemove', function (e) {\n e.stopPropagation();\n e.preventDefault();\n });\n }\n\n this.userActivity_ = false;\n this.removeClass('vjs-user-active');\n this.addClass('vjs-user-inactive');\n /**\n * @event Player#userinactive\n * @type {EventTarget~Event}\n */\n\n this.trigger('userinactive');\n }\n /**\n * Listen for user activity based on timeout value\n *\n * @private\n */\n ;\n\n _proto.listenForUserActivity_ = function listenForUserActivity_() {\n var mouseInProgress;\n var lastMoveX;\n var lastMoveY;\n var handleActivity = bind(this, this.reportUserActivity);\n\n var handleMouseMove = function handleMouseMove(e) {\n // #1068 - Prevent mousemove spamming\n // Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970\n if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) {\n lastMoveX = e.screenX;\n lastMoveY = e.screenY;\n handleActivity();\n }\n };\n\n var handleMouseDown = function handleMouseDown() {\n handleActivity(); // For as long as the they are touching the device or have their mouse down,\n // we consider them active even if they're not moving their finger or mouse.\n // So we want to continue to update that they are active\n\n this.clearInterval(mouseInProgress); // Setting userActivity=true now and setting the interval to the same time\n // as the activityCheck interval (250) should ensure we never miss the\n // next activityCheck\n\n mouseInProgress = this.setInterval(handleActivity, 250);\n };\n\n var handleMouseUpAndMouseLeave = function handleMouseUpAndMouseLeave(event) {\n handleActivity(); // Stop the interval that maintains activity if the mouse/touch is down\n\n this.clearInterval(mouseInProgress);\n }; // Any mouse movement will be considered user activity\n\n\n this.on('mousedown', handleMouseDown);\n this.on('mousemove', handleMouseMove);\n this.on('mouseup', handleMouseUpAndMouseLeave);\n this.on('mouseleave', handleMouseUpAndMouseLeave);\n var controlBar = this.getChild('controlBar'); // Fixes bug on Android & iOS where when tapping progressBar (when control bar is displayed)\n // controlBar would no longer be hidden by default timeout.\n\n if (controlBar && !IS_IOS && !IS_ANDROID) {\n controlBar.on('mouseenter', function (event) {\n if (this.player().options_.inactivityTimeout !== 0) {\n this.player().cache_.inactivityTimeout = this.player().options_.inactivityTimeout;\n }\n\n this.player().options_.inactivityTimeout = 0;\n });\n controlBar.on('mouseleave', function (event) {\n this.player().options_.inactivityTimeout = this.player().cache_.inactivityTimeout;\n });\n } // Listen for keyboard navigation\n // Shouldn't need to use inProgress interval because of key repeat\n\n\n this.on('keydown', handleActivity);\n this.on('keyup', handleActivity); // Run an interval every 250 milliseconds instead of stuffing everything into\n // the mousemove/touchmove function itself, to prevent performance degradation.\n // `this.reportUserActivity` simply sets this.userActivity_ to true, which\n // then gets picked up by this loop\n // http://ejohn.org/blog/learning-from-twitter/\n\n var inactivityTimeout;\n this.setInterval(function () {\n // Check to see if mouse/touch activity has happened\n if (!this.userActivity_) {\n return;\n } // Reset the activity tracker\n\n\n this.userActivity_ = false; // If the user state was inactive, set the state to active\n\n this.userActive(true); // Clear any existing inactivity timeout to start the timer over\n\n this.clearTimeout(inactivityTimeout);\n var timeout = this.options_.inactivityTimeout;\n\n if (timeout <= 0) {\n return;\n } // In milliseconds, if no more activity has occurred the\n // user will be considered inactive\n\n\n inactivityTimeout = this.setTimeout(function () {\n // Protect against the case where the inactivityTimeout can trigger just\n // before the next user activity is picked up by the activity check loop\n // causing a flicker\n if (!this.userActivity_) {\n this.userActive(false);\n }\n }, timeout);\n }, 250);\n }\n /**\n * Gets or sets the current playback rate. A playback rate of\n * 1.0 represents normal speed and 0.5 would indicate half-speed\n * playback, for instance.\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate\n *\n * @param {number} [rate]\n * New playback rate to set.\n *\n * @return {number}\n * The current playback rate when getting or 1.0\n */\n ;\n\n _proto.playbackRate = function playbackRate(rate) {\n if (rate !== undefined) {\n // NOTE: this.cache_.lastPlaybackRate is set from the tech handler\n // that is registered above\n this.techCall_('setPlaybackRate', rate);\n return;\n }\n\n if (this.tech_ && this.tech_.featuresPlaybackRate) {\n return this.cache_.lastPlaybackRate || this.techGet_('playbackRate');\n }\n\n return 1.0;\n }\n /**\n * Gets or sets the current default playback rate. A default playback rate of\n * 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance.\n * defaultPlaybackRate will only represent what the initial playbackRate of a video was, not\n * not the current playbackRate.\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate\n *\n * @param {number} [rate]\n * New default playback rate to set.\n *\n * @return {number|Player}\n * - The default playback rate when getting or 1.0\n * - the player when setting\n */\n ;\n\n _proto.defaultPlaybackRate = function defaultPlaybackRate(rate) {\n if (rate !== undefined) {\n return this.techCall_('setDefaultPlaybackRate', rate);\n }\n\n if (this.tech_ && this.tech_.featuresPlaybackRate) {\n return this.techGet_('defaultPlaybackRate');\n }\n\n return 1.0;\n }\n /**\n * Gets or sets the audio flag\n *\n * @param {boolean} bool\n * - true signals that this is an audio player\n * - false signals that this is not an audio player\n *\n * @return {boolean}\n * The current value of isAudio when getting\n */\n ;\n\n _proto.isAudio = function isAudio(bool) {\n if (bool !== undefined) {\n this.isAudio_ = !!bool;\n return;\n }\n\n return !!this.isAudio_;\n };\n\n _proto.enableAudioOnlyUI_ = function enableAudioOnlyUI_() {\n var _this19 = this;\n\n // Update styling immediately to show the control bar so we can get its height\n this.addClass('vjs-audio-only-mode');\n var playerChildren = this.children();\n var controlBar = this.getChild('ControlBar');\n var controlBarHeight = controlBar && controlBar.currentHeight(); // Hide all player components except the control bar. Control bar components\n // needed only for video are hidden with CSS\n\n playerChildren.forEach(function (child) {\n if (child === controlBar) {\n return;\n }\n\n if (child.el_ && !child.hasClass('vjs-hidden')) {\n child.hide();\n\n _this19.audioOnlyCache_.hiddenChildren.push(child);\n }\n });\n this.audioOnlyCache_.playerHeight = this.currentHeight(); // Set the player height the same as the control bar\n\n this.height(controlBarHeight);\n this.trigger('audioonlymodechange');\n };\n\n _proto.disableAudioOnlyUI_ = function disableAudioOnlyUI_() {\n this.removeClass('vjs-audio-only-mode'); // Show player components that were previously hidden\n\n this.audioOnlyCache_.hiddenChildren.forEach(function (child) {\n return child.show();\n }); // Reset player height\n\n this.height(this.audioOnlyCache_.playerHeight);\n this.trigger('audioonlymodechange');\n }\n /**\n * Get the current audioOnlyMode state or set audioOnlyMode to true or false.\n *\n * Setting this to `true` will hide all player components except the control bar,\n * as well as control bar components needed only for video.\n *\n * @param {boolean} [value]\n * The value to set audioOnlyMode to.\n *\n * @return {Promise|boolean}\n * A Promise is returned when setting the state, and a boolean when getting\n * the present state\n */\n ;\n\n _proto.audioOnlyMode = function audioOnlyMode(value) {\n var _this20 = this;\n\n if (typeof value !== 'boolean' || value === this.audioOnlyMode_) {\n return this.audioOnlyMode_;\n }\n\n this.audioOnlyMode_ = value;\n var PromiseClass = this.options_.Promise || window$1.Promise;\n\n if (PromiseClass) {\n // Enable Audio Only Mode\n if (value) {\n var exitPromises = []; // Fullscreen and PiP are not supported in audioOnlyMode, so exit if we need to.\n\n if (this.isInPictureInPicture()) {\n exitPromises.push(this.exitPictureInPicture());\n }\n\n if (this.isFullscreen()) {\n exitPromises.push(this.exitFullscreen());\n }\n\n if (this.audioPosterMode()) {\n exitPromises.push(this.audioPosterMode(false));\n }\n\n return PromiseClass.all(exitPromises).then(function () {\n return _this20.enableAudioOnlyUI_();\n });\n } // Disable Audio Only Mode\n\n\n return PromiseClass.resolve().then(function () {\n return _this20.disableAudioOnlyUI_();\n });\n }\n\n if (value) {\n if (this.isInPictureInPicture()) {\n this.exitPictureInPicture();\n }\n\n if (this.isFullscreen()) {\n this.exitFullscreen();\n }\n\n this.enableAudioOnlyUI_();\n } else {\n this.disableAudioOnlyUI_();\n }\n };\n\n _proto.enablePosterModeUI_ = function enablePosterModeUI_() {\n // Hide the video element and show the poster image to enable posterModeUI\n var tech = this.tech_ && this.tech_;\n tech.hide();\n this.addClass('vjs-audio-poster-mode');\n this.trigger('audiopostermodechange');\n };\n\n _proto.disablePosterModeUI_ = function disablePosterModeUI_() {\n // Show the video element and hide the poster image to disable posterModeUI\n var tech = this.tech_ && this.tech_;\n tech.show();\n this.removeClass('vjs-audio-poster-mode');\n this.trigger('audiopostermodechange');\n }\n /**\n * Get the current audioPosterMode state or set audioPosterMode to true or false\n *\n * @param {boolean} [value]\n * The value to set audioPosterMode to.\n *\n * @return {Promise|boolean}\n * A Promise is returned when setting the state, and a boolean when getting\n * the present state\n */\n ;\n\n _proto.audioPosterMode = function audioPosterMode(value) {\n var _this21 = this;\n\n if (typeof value !== 'boolean' || value === this.audioPosterMode_) {\n return this.audioPosterMode_;\n }\n\n this.audioPosterMode_ = value;\n var PromiseClass = this.options_.Promise || window$1.Promise;\n\n if (PromiseClass) {\n if (value) {\n if (this.audioOnlyMode()) {\n var audioOnlyModePromise = this.audioOnlyMode(false);\n return audioOnlyModePromise.then(function () {\n // enable audio poster mode after audio only mode is disabled\n _this21.enablePosterModeUI_();\n });\n }\n\n return PromiseClass.resolve().then(function () {\n // enable audio poster mode\n _this21.enablePosterModeUI_();\n });\n }\n\n return PromiseClass.resolve().then(function () {\n // disable audio poster mode\n _this21.disablePosterModeUI_();\n });\n }\n\n if (value) {\n if (this.audioOnlyMode()) {\n this.audioOnlyMode(false);\n }\n\n this.enablePosterModeUI_();\n return;\n }\n\n this.disablePosterModeUI_();\n }\n /**\n * A helper method for adding a {@link TextTrack} to our\n * {@link TextTrackList}.\n *\n * In addition to the W3C settings we allow adding additional info through options.\n *\n * @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack\n *\n * @param {string} [kind]\n * the kind of TextTrack you are adding\n *\n * @param {string} [label]\n * the label to give the TextTrack label\n *\n * @param {string} [language]\n * the language to set on the TextTrack\n *\n * @return {TextTrack|undefined}\n * the TextTrack that was added or undefined\n * if there is no tech\n */\n ;\n\n _proto.addTextTrack = function addTextTrack(kind, label, language) {\n if (this.tech_) {\n return this.tech_.addTextTrack(kind, label, language);\n }\n }\n /**\n * Create a remote {@link TextTrack} and an {@link HTMLTrackElement}.\n * When manualCleanup is set to false, the track will be automatically removed\n * on source changes.\n *\n * @param {Object} options\n * Options to pass to {@link HTMLTrackElement} during creation. See\n * {@link HTMLTrackElement} for object properties that you should use.\n *\n * @param {boolean} [manualCleanup=true] if set to false, the TextTrack will be\n * removed on a source change\n *\n * @return {HtmlTrackElement}\n * the HTMLTrackElement that was created and added\n * to the HtmlTrackElementList and the remote\n * TextTrackList\n *\n * @deprecated The default value of the \"manualCleanup\" parameter will default\n * to \"false\" in upcoming versions of Video.js\n */\n ;\n\n _proto.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {\n if (this.tech_) {\n return this.tech_.addRemoteTextTrack(options, manualCleanup);\n }\n }\n /**\n * Remove a remote {@link TextTrack} from the respective\n * {@link TextTrackList} and {@link HtmlTrackElementList}.\n *\n * @param {Object} track\n * Remote {@link TextTrack} to remove\n *\n * @return {undefined}\n * does not return anything\n */\n ;\n\n _proto.removeRemoteTextTrack = function removeRemoteTextTrack(obj) {\n if (obj === void 0) {\n obj = {};\n }\n\n var _obj = obj,\n track = _obj.track;\n\n if (!track) {\n track = obj;\n } // destructure the input into an object with a track argument, defaulting to arguments[0]\n // default the whole argument to an empty object if nothing was passed in\n\n\n if (this.tech_) {\n return this.tech_.removeRemoteTextTrack(track);\n }\n }\n /**\n * Gets available media playback quality metrics as specified by the W3C's Media\n * Playback Quality API.\n *\n * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n *\n * @return {Object|undefined}\n * An object with supported media playback quality metrics or undefined if there\n * is no tech or the tech does not support it.\n */\n ;\n\n _proto.getVideoPlaybackQuality = function getVideoPlaybackQuality() {\n return this.techGet_('getVideoPlaybackQuality');\n }\n /**\n * Get video width\n *\n * @return {number}\n * current video width\n */\n ;\n\n _proto.videoWidth = function videoWidth() {\n return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0;\n }\n /**\n * Get video height\n *\n * @return {number}\n * current video height\n */\n ;\n\n _proto.videoHeight = function videoHeight() {\n return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0;\n }\n /**\n * The player's language code.\n *\n * Changing the language will trigger\n * [languagechange]{@link Player#event:languagechange}\n * which Components can use to update control text.\n * ClickableComponent will update its control text by default on\n * [languagechange]{@link Player#event:languagechange}.\n *\n * @fires Player#languagechange\n *\n * @param {string} [code]\n * the language code to set the player to\n *\n * @return {string}\n * The current language code when getting\n */\n ;\n\n _proto.language = function language(code) {\n if (code === undefined) {\n return this.language_;\n }\n\n if (this.language_ !== String(code).toLowerCase()) {\n this.language_ = String(code).toLowerCase(); // during first init, it's possible some things won't be evented\n\n if (isEvented(this)) {\n /**\n * fires when the player language change\n *\n * @event Player#languagechange\n * @type {EventTarget~Event}\n */\n this.trigger('languagechange');\n }\n }\n }\n /**\n * Get the player's language dictionary\n * Merge every time, because a newly added plugin might call videojs.addLanguage() at any time\n * Languages specified directly in the player options have precedence\n *\n * @return {Array}\n * An array of of supported languages\n */\n ;\n\n _proto.languages = function languages() {\n return mergeOptions$3(Player.prototype.options_.languages, this.languages_);\n }\n /**\n * returns a JavaScript object reperesenting the current track\n * information. **DOES not return it as JSON**\n *\n * @return {Object}\n * Object representing the current of track info\n */\n ;\n\n _proto.toJSON = function toJSON() {\n var options = mergeOptions$3(this.options_);\n var tracks = options.tracks;\n options.tracks = [];\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i]; // deep merge tracks and null out player so no circular references\n\n track = mergeOptions$3(track);\n track.player = undefined;\n options.tracks[i] = track;\n }\n\n return options;\n }\n /**\n * Creates a simple modal dialog (an instance of the {@link ModalDialog}\n * component) that immediately overlays the player with arbitrary\n * content and removes itself when closed.\n *\n * @param {string|Function|Element|Array|null} content\n * Same as {@link ModalDialog#content}'s param of the same name.\n * The most straight-forward usage is to provide a string or DOM\n * element.\n *\n * @param {Object} [options]\n * Extra options which will be passed on to the {@link ModalDialog}.\n *\n * @return {ModalDialog}\n * the {@link ModalDialog} that was created\n */\n ;\n\n _proto.createModal = function createModal(content, options) {\n var _this22 = this;\n\n options = options || {};\n options.content = content || '';\n var modal = new ModalDialog(this, options);\n this.addChild(modal);\n modal.on('dispose', function () {\n _this22.removeChild(modal);\n });\n modal.open();\n return modal;\n }\n /**\n * Change breakpoint classes when the player resizes.\n *\n * @private\n */\n ;\n\n _proto.updateCurrentBreakpoint_ = function updateCurrentBreakpoint_() {\n if (!this.responsive()) {\n return;\n }\n\n var currentBreakpoint = this.currentBreakpoint();\n var currentWidth = this.currentWidth();\n\n for (var i = 0; i < BREAKPOINT_ORDER.length; i++) {\n var candidateBreakpoint = BREAKPOINT_ORDER[i];\n var maxWidth = this.breakpoints_[candidateBreakpoint];\n\n if (currentWidth <= maxWidth) {\n // The current breakpoint did not change, nothing to do.\n if (currentBreakpoint === candidateBreakpoint) {\n return;\n } // Only remove a class if there is a current breakpoint.\n\n\n if (currentBreakpoint) {\n this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]);\n }\n\n this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]);\n this.breakpoint_ = candidateBreakpoint;\n break;\n }\n }\n }\n /**\n * Removes the current breakpoint.\n *\n * @private\n */\n ;\n\n _proto.removeCurrentBreakpoint_ = function removeCurrentBreakpoint_() {\n var className = this.currentBreakpointClass();\n this.breakpoint_ = '';\n\n if (className) {\n this.removeClass(className);\n }\n }\n /**\n * Get or set breakpoints on the player.\n *\n * Calling this method with an object or `true` will remove any previous\n * custom breakpoints and start from the defaults again.\n *\n * @param {Object|boolean} [breakpoints]\n * If an object is given, it can be used to provide custom\n * breakpoints. If `true` is given, will set default breakpoints.\n * If this argument is not given, will simply return the current\n * breakpoints.\n *\n * @param {number} [breakpoints.tiny]\n * The maximum width for the \"vjs-layout-tiny\" class.\n *\n * @param {number} [breakpoints.xsmall]\n * The maximum width for the \"vjs-layout-x-small\" class.\n *\n * @param {number} [breakpoints.small]\n * The maximum width for the \"vjs-layout-small\" class.\n *\n * @param {number} [breakpoints.medium]\n * The maximum width for the \"vjs-layout-medium\" class.\n *\n * @param {number} [breakpoints.large]\n * The maximum width for the \"vjs-layout-large\" class.\n *\n * @param {number} [breakpoints.xlarge]\n * The maximum width for the \"vjs-layout-x-large\" class.\n *\n * @param {number} [breakpoints.huge]\n * The maximum width for the \"vjs-layout-huge\" class.\n *\n * @return {Object}\n * An object mapping breakpoint names to maximum width values.\n */\n ;\n\n _proto.breakpoints = function breakpoints(_breakpoints) {\n // Used as a getter.\n if (_breakpoints === undefined) {\n return assign(this.breakpoints_);\n }\n\n this.breakpoint_ = '';\n this.breakpoints_ = assign({}, DEFAULT_BREAKPOINTS, _breakpoints); // When breakpoint definitions change, we need to update the currently\n // selected breakpoint.\n\n this.updateCurrentBreakpoint_(); // Clone the breakpoints before returning.\n\n return assign(this.breakpoints_);\n }\n /**\n * Get or set a flag indicating whether or not this player should adjust\n * its UI based on its dimensions.\n *\n * @param {boolean} value\n * Should be `true` if the player should adjust its UI based on its\n * dimensions; otherwise, should be `false`.\n *\n * @return {boolean}\n * Will be `true` if this player should adjust its UI based on its\n * dimensions; otherwise, will be `false`.\n */\n ;\n\n _proto.responsive = function responsive(value) {\n // Used as a getter.\n if (value === undefined) {\n return this.responsive_;\n }\n\n value = Boolean(value);\n var current = this.responsive_; // Nothing changed.\n\n if (value === current) {\n return;\n } // The value actually changed, set it.\n\n\n this.responsive_ = value; // Start listening for breakpoints and set the initial breakpoint if the\n // player is now responsive.\n\n if (value) {\n this.on('playerresize', this.boundUpdateCurrentBreakpoint_);\n this.updateCurrentBreakpoint_(); // Stop listening for breakpoints if the player is no longer responsive.\n } else {\n this.off('playerresize', this.boundUpdateCurrentBreakpoint_);\n this.removeCurrentBreakpoint_();\n }\n\n return value;\n }\n /**\n * Get current breakpoint name, if any.\n *\n * @return {string}\n * If there is currently a breakpoint set, returns a the key from the\n * breakpoints object matching it. Otherwise, returns an empty string.\n */\n ;\n\n _proto.currentBreakpoint = function currentBreakpoint() {\n return this.breakpoint_;\n }\n /**\n * Get the current breakpoint class name.\n *\n * @return {string}\n * The matching class name (e.g. `\"vjs-layout-tiny\"` or\n * `\"vjs-layout-large\"`) for the current breakpoint. Empty string if\n * there is no current breakpoint.\n */\n ;\n\n _proto.currentBreakpointClass = function currentBreakpointClass() {\n return BREAKPOINT_CLASSES[this.breakpoint_] || '';\n }\n /**\n * An object that describes a single piece of media.\n *\n * Properties that are not part of this type description will be retained; so,\n * this can be viewed as a generic metadata storage mechanism as well.\n *\n * @see {@link https://wicg.github.io/mediasession/#the-mediametadata-interface}\n * @typedef {Object} Player~MediaObject\n *\n * @property {string} [album]\n * Unused, except if this object is passed to the `MediaSession`\n * API.\n *\n * @property {string} [artist]\n * Unused, except if this object is passed to the `MediaSession`\n * API.\n *\n * @property {Object[]} [artwork]\n * Unused, except if this object is passed to the `MediaSession`\n * API. If not specified, will be populated via the `poster`, if\n * available.\n *\n * @property {string} [poster]\n * URL to an image that will display before playback.\n *\n * @property {Tech~SourceObject|Tech~SourceObject[]|string} [src]\n * A single source object, an array of source objects, or a string\n * referencing a URL to a media source. It is _highly recommended_\n * that an object or array of objects is used here, so that source\n * selection algorithms can take the `type` into account.\n *\n * @property {string} [title]\n * Unused, except if this object is passed to the `MediaSession`\n * API.\n *\n * @property {Object[]} [textTracks]\n * An array of objects to be used to create text tracks, following\n * the {@link https://www.w3.org/TR/html50/embedded-content-0.html#the-track-element|native track element format}.\n * For ease of removal, these will be created as \"remote\" text\n * tracks and set to automatically clean up on source changes.\n *\n * These objects may have properties like `src`, `kind`, `label`,\n * and `language`, see {@link Tech#createRemoteTextTrack}.\n */\n\n /**\n * Populate the player using a {@link Player~MediaObject|MediaObject}.\n *\n * @param {Player~MediaObject} media\n * A media object.\n *\n * @param {Function} ready\n * A callback to be called when the player is ready.\n */\n ;\n\n _proto.loadMedia = function loadMedia(media, ready) {\n var _this23 = this;\n\n if (!media || typeof media !== 'object') {\n return;\n }\n\n this.reset(); // Clone the media object so it cannot be mutated from outside.\n\n this.cache_.media = mergeOptions$3(media);\n var _this$cache_$media = this.cache_.media,\n artwork = _this$cache_$media.artwork,\n poster = _this$cache_$media.poster,\n src = _this$cache_$media.src,\n textTracks = _this$cache_$media.textTracks; // If `artwork` is not given, create it using `poster`.\n\n if (!artwork && poster) {\n this.cache_.media.artwork = [{\n src: poster,\n type: getMimetype(poster)\n }];\n }\n\n if (src) {\n this.src(src);\n }\n\n if (poster) {\n this.poster(poster);\n }\n\n if (Array.isArray(textTracks)) {\n textTracks.forEach(function (tt) {\n return _this23.addRemoteTextTrack(tt, false);\n });\n }\n\n this.ready(ready);\n }\n /**\n * Get a clone of the current {@link Player~MediaObject} for this player.\n *\n * If the `loadMedia` method has not been used, will attempt to return a\n * {@link Player~MediaObject} based on the current state of the player.\n *\n * @return {Player~MediaObject}\n */\n ;\n\n _proto.getMedia = function getMedia() {\n if (!this.cache_.media) {\n var poster = this.poster();\n var src = this.currentSources();\n var textTracks = Array.prototype.map.call(this.remoteTextTracks(), function (tt) {\n return {\n kind: tt.kind,\n label: tt.label,\n language: tt.language,\n src: tt.src\n };\n });\n var media = {\n src: src,\n textTracks: textTracks\n };\n\n if (poster) {\n media.poster = poster;\n media.artwork = [{\n src: media.poster,\n type: getMimetype(media.poster)\n }];\n }\n\n return media;\n }\n\n return mergeOptions$3(this.cache_.media);\n }\n /**\n * Gets tag settings\n *\n * @param {Element} tag\n * The player tag\n *\n * @return {Object}\n * An object containing all of the settings\n * for a player tag\n */\n ;\n\n Player.getTagSettings = function getTagSettings(tag) {\n var baseOptions = {\n sources: [],\n tracks: []\n };\n var tagOptions = getAttributes(tag);\n var dataSetup = tagOptions['data-setup'];\n\n if (hasClass(tag, 'vjs-fill')) {\n tagOptions.fill = true;\n }\n\n if (hasClass(tag, 'vjs-fluid')) {\n tagOptions.fluid = true;\n } // Check if data-setup attr exists.\n\n\n if (dataSetup !== null) {\n // Parse options JSON\n // If empty string, make it a parsable json object.\n var _safeParseTuple = safeParseTuple(dataSetup || '{}'),\n err = _safeParseTuple[0],\n data = _safeParseTuple[1];\n\n if (err) {\n log$1.error(err);\n }\n\n assign(tagOptions, data);\n }\n\n assign(baseOptions, tagOptions); // Get tag children settings\n\n if (tag.hasChildNodes()) {\n var children = tag.childNodes;\n\n for (var i = 0, j = children.length; i < j; i++) {\n var child = children[i]; // Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/\n\n var childName = child.nodeName.toLowerCase();\n\n if (childName === 'source') {\n baseOptions.sources.push(getAttributes(child));\n } else if (childName === 'track') {\n baseOptions.tracks.push(getAttributes(child));\n }\n }\n }\n\n return baseOptions;\n }\n /**\n * Determine whether or not flexbox is supported\n *\n * @return {boolean}\n * - true if flexbox is supported\n * - false if flexbox is not supported\n */\n ;\n\n _proto.flexNotSupported_ = function flexNotSupported_() {\n var elem = document.createElement('i'); // Note: We don't actually use flexBasis (or flexOrder), but it's one of the more\n // common flex features that we can rely on when checking for flex support.\n\n return !('flexBasis' in elem.style || 'webkitFlexBasis' in elem.style || 'mozFlexBasis' in elem.style || 'msFlexBasis' in elem.style || // IE10-specific (2012 flex spec), available for completeness\n 'msFlexOrder' in elem.style);\n }\n /**\n * Set debug mode to enable/disable logs at info level.\n *\n * @param {boolean} enabled\n * @fires Player#debugon\n * @fires Player#debugoff\n */\n ;\n\n _proto.debug = function debug(enabled) {\n if (enabled === undefined) {\n return this.debugEnabled_;\n }\n\n if (enabled) {\n this.trigger('debugon');\n this.previousLogLevel_ = this.log.level;\n this.log.level('debug');\n this.debugEnabled_ = true;\n } else {\n this.trigger('debugoff');\n this.log.level(this.previousLogLevel_);\n this.previousLogLevel_ = undefined;\n this.debugEnabled_ = false;\n }\n }\n /**\n * Set or get current playback rates.\n * Takes an array and updates the playback rates menu with the new items.\n * Pass in an empty array to hide the menu.\n * Values other than arrays are ignored.\n *\n * @fires Player#playbackrateschange\n * @param {number[]} newRates\n * The new rates that the playback rates menu should update to.\n * An empty array will hide the menu\n * @return {number[]} When used as a getter will return the current playback rates\n */\n ;\n\n _proto.playbackRates = function playbackRates(newRates) {\n if (newRates === undefined) {\n return this.cache_.playbackRates;\n } // ignore any value that isn't an array\n\n\n if (!Array.isArray(newRates)) {\n return;\n } // ignore any arrays that don't only contain numbers\n\n\n if (!newRates.every(function (rate) {\n return typeof rate === 'number';\n })) {\n return;\n }\n\n this.cache_.playbackRates = newRates;\n /**\n * fires when the playback rates in a player are changed\n *\n * @event Player#playbackrateschange\n * @type {EventTarget~Event}\n */\n\n this.trigger('playbackrateschange');\n };\n\n return Player;\n}(Component$1);\n/**\n * Get the {@link VideoTrackList}\n * @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist\n *\n * @return {VideoTrackList}\n * the current video track list\n *\n * @method Player.prototype.videoTracks\n */\n\n/**\n * Get the {@link AudioTrackList}\n * @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist\n *\n * @return {AudioTrackList}\n * the current audio track list\n *\n * @method Player.prototype.audioTracks\n */\n\n/**\n * Get the {@link TextTrackList}\n *\n * @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks\n *\n * @return {TextTrackList}\n * the current text track list\n *\n * @method Player.prototype.textTracks\n */\n\n/**\n * Get the remote {@link TextTrackList}\n *\n * @return {TextTrackList}\n * The current remote text track list\n *\n * @method Player.prototype.remoteTextTracks\n */\n\n/**\n * Get the remote {@link HtmlTrackElementList} tracks.\n *\n * @return {HtmlTrackElementList}\n * The current remote text track element list\n *\n * @method Player.prototype.remoteTextTrackEls\n */\n\n\nALL.names.forEach(function (name) {\n var props = ALL[name];\n\n Player.prototype[props.getterName] = function () {\n if (this.tech_) {\n return this.tech_[props.getterName]();\n } // if we have not yet loadTech_, we create {video,audio,text}Tracks_\n // these will be passed to the tech during loading\n\n\n this[props.privateName] = this[props.privateName] || new props.ListClass();\n return this[props.privateName];\n };\n});\n/**\n * Get or set the `Player`'s crossorigin option. For the HTML5 player, this\n * sets the `crossOrigin` property on the `` tag to control the CORS\n * behavior.\n *\n * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}\n *\n * @param {string} [value]\n * The value to set the `Player`'s crossorigin to. If an argument is\n * given, must be one of `anonymous` or `use-credentials`.\n *\n * @return {string|undefined}\n * - The current crossorigin value of the `Player` when getting.\n * - undefined when setting\n */\n\nPlayer.prototype.crossorigin = Player.prototype.crossOrigin;\n/**\n * Global enumeration of players.\n *\n * The keys are the player IDs and the values are either the {@link Player}\n * instance or `null` for disposed players.\n *\n * @type {Object}\n */\n\nPlayer.players = {};\nvar navigator = window$1.navigator;\n/*\n * Player instance options, surfaced using options\n * options = Player.prototype.options_\n * Make changes in options, not here.\n *\n * @type {Object}\n * @private\n */\n\nPlayer.prototype.options_ = {\n // Default order of fallback technology\n techOrder: Tech.defaultTechOrder_,\n html5: {},\n // default inactivity timeout\n inactivityTimeout: 2000,\n // default playback rates\n playbackRates: [],\n // Add playback rate selection by adding rates\n // 'playbackRates': [0.5, 1, 1.5, 2],\n liveui: false,\n // Included control sets\n children: ['mediaLoader', 'posterImage', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'liveTracker', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'],\n language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en',\n // locales and their language translations\n languages: {},\n // Default message to show when a video cannot be played.\n notSupportedMessage: 'No compatible source was found for this media.',\n normalizeAutoplay: false,\n fullscreen: {\n options: {\n navigationUI: 'hide'\n }\n },\n breakpoints: {},\n responsive: false,\n audioOnlyMode: false,\n audioPosterMode: false\n};\n[\n/**\n * Returns whether or not the player is in the \"ended\" state.\n *\n * @return {Boolean} True if the player is in the ended state, false if not.\n * @method Player#ended\n */\n'ended',\n/**\n * Returns whether or not the player is in the \"seeking\" state.\n *\n * @return {Boolean} True if the player is in the seeking state, false if not.\n * @method Player#seeking\n */\n'seeking',\n/**\n * Returns the TimeRanges of the media that are currently available\n * for seeking to.\n *\n * @return {TimeRanges} the seekable intervals of the media timeline\n * @method Player#seekable\n */\n'seekable',\n/**\n * Returns the current state of network activity for the element, from\n * the codes in the list below.\n * - NETWORK_EMPTY (numeric value 0)\n * The element has not yet been initialised. All attributes are in\n * their initial states.\n * - NETWORK_IDLE (numeric value 1)\n * The element's resource selection algorithm is active and has\n * selected a resource, but it is not actually using the network at\n * this time.\n * - NETWORK_LOADING (numeric value 2)\n * The user agent is actively trying to download data.\n * - NETWORK_NO_SOURCE (numeric value 3)\n * The element's resource selection algorithm is active, but it has\n * not yet found a resource to use.\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states\n * @return {number} the current network activity state\n * @method Player#networkState\n */\n'networkState',\n/**\n * Returns a value that expresses the current state of the element\n * with respect to rendering the current playback position, from the\n * codes in the list below.\n * - HAVE_NOTHING (numeric value 0)\n * No information regarding the media resource is available.\n * - HAVE_METADATA (numeric value 1)\n * Enough of the resource has been obtained that the duration of the\n * resource is available.\n * - HAVE_CURRENT_DATA (numeric value 2)\n * Data for the immediate current playback position is available.\n * - HAVE_FUTURE_DATA (numeric value 3)\n * Data for the immediate current playback position is available, as\n * well as enough data for the user agent to advance the current\n * playback position in the direction of playback.\n * - HAVE_ENOUGH_DATA (numeric value 4)\n * The user agent estimates that enough data is available for\n * playback to proceed uninterrupted.\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate\n * @return {number} the current playback rendering state\n * @method Player#readyState\n */\n'readyState'].forEach(function (fn) {\n Player.prototype[fn] = function () {\n return this.techGet_(fn);\n };\n});\nTECH_EVENTS_RETRIGGER.forEach(function (event) {\n Player.prototype[\"handleTech\" + toTitleCase$1(event) + \"_\"] = function () {\n return this.trigger(event);\n };\n});\n/**\n * Fired when the player has initial duration and dimension information\n *\n * @event Player#loadedmetadata\n * @type {EventTarget~Event}\n */\n\n/**\n * Fired when the player has downloaded data at the current playback position\n *\n * @event Player#loadeddata\n * @type {EventTarget~Event}\n */\n\n/**\n * Fired when the current playback position has changed *\n * During playback this is fired every 15-250 milliseconds, depending on the\n * playback technology in use.\n *\n * @event Player#timeupdate\n * @type {EventTarget~Event}\n */\n\n/**\n * Fired when the volume changes\n *\n * @event Player#volumechange\n * @type {EventTarget~Event}\n */\n\n/**\n * Reports whether or not a player has a plugin available.\n *\n * This does not report whether or not the plugin has ever been initialized\n * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.\n *\n * @method Player#hasPlugin\n * @param {string} name\n * The name of a plugin.\n *\n * @return {boolean}\n * Whether or not this player has the requested plugin available.\n */\n\n/**\n * Reports whether or not a player is using a plugin by name.\n *\n * For basic plugins, this only reports whether the plugin has _ever_ been\n * initialized on this player.\n *\n * @method Player#usingPlugin\n * @param {string} name\n * The name of a plugin.\n *\n * @return {boolean}\n * Whether or not this player is using the requested plugin.\n */\n\nComponent$1.registerComponent('Player', Player);\n\n/**\n * The base plugin name.\n *\n * @private\n * @constant\n * @type {string}\n */\n\nvar BASE_PLUGIN_NAME = 'plugin';\n/**\n * The key on which a player's active plugins cache is stored.\n *\n * @private\n * @constant\n * @type {string}\n */\n\nvar PLUGIN_CACHE_KEY = 'activePlugins_';\n/**\n * Stores registered plugins in a private space.\n *\n * @private\n * @type {Object}\n */\n\nvar pluginStorage = {};\n/**\n * Reports whether or not a plugin has been registered.\n *\n * @private\n * @param {string} name\n * The name of a plugin.\n *\n * @return {boolean}\n * Whether or not the plugin has been registered.\n */\n\nvar pluginExists = function pluginExists(name) {\n return pluginStorage.hasOwnProperty(name);\n};\n/**\n * Get a single registered plugin by name.\n *\n * @private\n * @param {string} name\n * The name of a plugin.\n *\n * @return {Function|undefined}\n * The plugin (or undefined).\n */\n\n\nvar getPlugin = function getPlugin(name) {\n return pluginExists(name) ? pluginStorage[name] : undefined;\n};\n/**\n * Marks a plugin as \"active\" on a player.\n *\n * Also, ensures that the player has an object for tracking active plugins.\n *\n * @private\n * @param {Player} player\n * A Video.js player instance.\n *\n * @param {string} name\n * The name of a plugin.\n */\n\n\nvar markPluginAsActive = function markPluginAsActive(player, name) {\n player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {};\n player[PLUGIN_CACHE_KEY][name] = true;\n};\n/**\n * Triggers a pair of plugin setup events.\n *\n * @private\n * @param {Player} player\n * A Video.js player instance.\n *\n * @param {Plugin~PluginEventHash} hash\n * A plugin event hash.\n *\n * @param {boolean} [before]\n * If true, prefixes the event name with \"before\". In other words,\n * use this to trigger \"beforepluginsetup\" instead of \"pluginsetup\".\n */\n\n\nvar triggerSetupEvent = function triggerSetupEvent(player, hash, before) {\n var eventName = (before ? 'before' : '') + 'pluginsetup';\n player.trigger(eventName, hash);\n player.trigger(eventName + ':' + hash.name, hash);\n};\n/**\n * Takes a basic plugin function and returns a wrapper function which marks\n * on the player that the plugin has been activated.\n *\n * @private\n * @param {string} name\n * The name of the plugin.\n *\n * @param {Function} plugin\n * The basic plugin.\n *\n * @return {Function}\n * A wrapper function for the given plugin.\n */\n\n\nvar createBasicPlugin = function createBasicPlugin(name, plugin) {\n var basicPluginWrapper = function basicPluginWrapper() {\n // We trigger the \"beforepluginsetup\" and \"pluginsetup\" events on the player\n // regardless, but we want the hash to be consistent with the hash provided\n // for advanced plugins.\n //\n // The only potentially counter-intuitive thing here is the `instance` in\n // the \"pluginsetup\" event is the value returned by the `plugin` function.\n triggerSetupEvent(this, {\n name: name,\n plugin: plugin,\n instance: null\n }, true);\n var instance = plugin.apply(this, arguments);\n markPluginAsActive(this, name);\n triggerSetupEvent(this, {\n name: name,\n plugin: plugin,\n instance: instance\n });\n return instance;\n };\n\n Object.keys(plugin).forEach(function (prop) {\n basicPluginWrapper[prop] = plugin[prop];\n });\n return basicPluginWrapper;\n};\n/**\n * Takes a plugin sub-class and returns a factory function for generating\n * instances of it.\n *\n * This factory function will replace itself with an instance of the requested\n * sub-class of Plugin.\n *\n * @private\n * @param {string} name\n * The name of the plugin.\n *\n * @param {Plugin} PluginSubClass\n * The advanced plugin.\n *\n * @return {Function}\n */\n\n\nvar createPluginFactory = function createPluginFactory(name, PluginSubClass) {\n // Add a `name` property to the plugin prototype so that each plugin can\n // refer to itself by name.\n PluginSubClass.prototype.name = name;\n return function () {\n triggerSetupEvent(this, {\n name: name,\n plugin: PluginSubClass,\n instance: null\n }, true);\n\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n var instance = _construct(PluginSubClass, [this].concat(args)); // The plugin is replaced by a function that returns the current instance.\n\n\n this[name] = function () {\n return instance;\n };\n\n triggerSetupEvent(this, instance.getEventHash());\n return instance;\n };\n};\n/**\n * Parent class for all advanced plugins.\n *\n * @mixes module:evented~EventedMixin\n * @mixes module:stateful~StatefulMixin\n * @fires Player#beforepluginsetup\n * @fires Player#beforepluginsetup:$name\n * @fires Player#pluginsetup\n * @fires Player#pluginsetup:$name\n * @listens Player#dispose\n * @throws {Error}\n * If attempting to instantiate the base {@link Plugin} class\n * directly instead of via a sub-class.\n */\n\n\nvar Plugin = /*#__PURE__*/function () {\n /**\n * Creates an instance of this class.\n *\n * Sub-classes should call `super` to ensure plugins are properly initialized.\n *\n * @param {Player} player\n * A Video.js player instance.\n */\n function Plugin(player) {\n if (this.constructor === Plugin) {\n throw new Error('Plugin must be sub-classed; not directly instantiated.');\n }\n\n this.player = player;\n\n if (!this.log) {\n this.log = this.player.log.createLogger(this.name);\n } // Make this object evented, but remove the added `trigger` method so we\n // use the prototype version instead.\n\n\n evented(this);\n delete this.trigger;\n stateful(this, this.constructor.defaultState);\n markPluginAsActive(player, this.name); // Auto-bind the dispose method so we can use it as a listener and unbind\n // it later easily.\n\n this.dispose = this.dispose.bind(this); // If the player is disposed, dispose the plugin.\n\n player.on('dispose', this.dispose);\n }\n /**\n * Get the version of the plugin that was set on .VERSION\n */\n\n\n var _proto = Plugin.prototype;\n\n _proto.version = function version() {\n return this.constructor.VERSION;\n }\n /**\n * Each event triggered by plugins includes a hash of additional data with\n * conventional properties.\n *\n * This returns that object or mutates an existing hash.\n *\n * @param {Object} [hash={}]\n * An object to be used as event an event hash.\n *\n * @return {Plugin~PluginEventHash}\n * An event hash object with provided properties mixed-in.\n */\n ;\n\n _proto.getEventHash = function getEventHash(hash) {\n if (hash === void 0) {\n hash = {};\n }\n\n hash.name = this.name;\n hash.plugin = this.constructor;\n hash.instance = this;\n return hash;\n }\n /**\n * Triggers an event on the plugin object and overrides\n * {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}.\n *\n * @param {string|Object} event\n * An event type or an object with a type property.\n *\n * @param {Object} [hash={}]\n * Additional data hash to merge with a\n * {@link Plugin~PluginEventHash|PluginEventHash}.\n *\n * @return {boolean}\n * Whether or not default was prevented.\n */\n ;\n\n _proto.trigger = function trigger$1(event, hash) {\n if (hash === void 0) {\n hash = {};\n }\n\n return trigger(this.eventBusEl_, event, this.getEventHash(hash));\n }\n /**\n * Handles \"statechanged\" events on the plugin. No-op by default, override by\n * subclassing.\n *\n * @abstract\n * @param {Event} e\n * An event object provided by a \"statechanged\" event.\n *\n * @param {Object} e.changes\n * An object describing changes that occurred with the \"statechanged\"\n * event.\n */\n ;\n\n _proto.handleStateChanged = function handleStateChanged(e) {}\n /**\n * Disposes a plugin.\n *\n * Subclasses can override this if they want, but for the sake of safety,\n * it's probably best to subscribe the \"dispose\" event.\n *\n * @fires Plugin#dispose\n */\n ;\n\n _proto.dispose = function dispose() {\n var name = this.name,\n player = this.player;\n /**\n * Signals that a advanced plugin is about to be disposed.\n *\n * @event Plugin#dispose\n * @type {EventTarget~Event}\n */\n\n this.trigger('dispose');\n this.off();\n player.off('dispose', this.dispose); // Eliminate any possible sources of leaking memory by clearing up\n // references between the player and the plugin instance and nulling out\n // the plugin's state and replacing methods with a function that throws.\n\n player[PLUGIN_CACHE_KEY][name] = false;\n this.player = this.state = null; // Finally, replace the plugin name on the player with a new factory\n // function, so that the plugin is ready to be set up again.\n\n player[name] = createPluginFactory(name, pluginStorage[name]);\n }\n /**\n * Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`).\n *\n * @param {string|Function} plugin\n * If a string, matches the name of a plugin. If a function, will be\n * tested directly.\n *\n * @return {boolean}\n * Whether or not a plugin is a basic plugin.\n */\n ;\n\n Plugin.isBasic = function isBasic(plugin) {\n var p = typeof plugin === 'string' ? getPlugin(plugin) : plugin;\n return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype);\n }\n /**\n * Register a Video.js plugin.\n *\n * @param {string} name\n * The name of the plugin to be registered. Must be a string and\n * must not match an existing plugin or a method on the `Player`\n * prototype.\n *\n * @param {Function} plugin\n * A sub-class of `Plugin` or a function for basic plugins.\n *\n * @return {Function}\n * For advanced plugins, a factory function for that plugin. For\n * basic plugins, a wrapper function that initializes the plugin.\n */\n ;\n\n Plugin.registerPlugin = function registerPlugin(name, plugin) {\n if (typeof name !== 'string') {\n throw new Error(\"Illegal plugin name, \\\"\" + name + \"\\\", must be a string, was \" + typeof name + \".\");\n }\n\n if (pluginExists(name)) {\n log$1.warn(\"A plugin named \\\"\" + name + \"\\\" already exists. You may want to avoid re-registering plugins!\");\n } else if (Player.prototype.hasOwnProperty(name)) {\n throw new Error(\"Illegal plugin name, \\\"\" + name + \"\\\", cannot share a name with an existing player method!\");\n }\n\n if (typeof plugin !== 'function') {\n throw new Error(\"Illegal plugin for \\\"\" + name + \"\\\", must be a function, was \" + typeof plugin + \".\");\n }\n\n pluginStorage[name] = plugin; // Add a player prototype method for all sub-classed plugins (but not for\n // the base Plugin class).\n\n if (name !== BASE_PLUGIN_NAME) {\n if (Plugin.isBasic(plugin)) {\n Player.prototype[name] = createBasicPlugin(name, plugin);\n } else {\n Player.prototype[name] = createPluginFactory(name, plugin);\n }\n }\n\n return plugin;\n }\n /**\n * De-register a Video.js plugin.\n *\n * @param {string} name\n * The name of the plugin to be de-registered. Must be a string that\n * matches an existing plugin.\n *\n * @throws {Error}\n * If an attempt is made to de-register the base plugin.\n */\n ;\n\n Plugin.deregisterPlugin = function deregisterPlugin(name) {\n if (name === BASE_PLUGIN_NAME) {\n throw new Error('Cannot de-register base plugin.');\n }\n\n if (pluginExists(name)) {\n delete pluginStorage[name];\n delete Player.prototype[name];\n }\n }\n /**\n * Gets an object containing multiple Video.js plugins.\n *\n * @param {Array} [names]\n * If provided, should be an array of plugin names. Defaults to _all_\n * plugin names.\n *\n * @return {Object|undefined}\n * An object containing plugin(s) associated with their name(s) or\n * `undefined` if no matching plugins exist).\n */\n ;\n\n Plugin.getPlugins = function getPlugins(names) {\n if (names === void 0) {\n names = Object.keys(pluginStorage);\n }\n\n var result;\n names.forEach(function (name) {\n var plugin = getPlugin(name);\n\n if (plugin) {\n result = result || {};\n result[name] = plugin;\n }\n });\n return result;\n }\n /**\n * Gets a plugin's version, if available\n *\n * @param {string} name\n * The name of a plugin.\n *\n * @return {string}\n * The plugin's version or an empty string.\n */\n ;\n\n Plugin.getPluginVersion = function getPluginVersion(name) {\n var plugin = getPlugin(name);\n return plugin && plugin.VERSION || '';\n };\n\n return Plugin;\n}();\n/**\n * Gets a plugin by name if it exists.\n *\n * @static\n * @method getPlugin\n * @memberOf Plugin\n * @param {string} name\n * The name of a plugin.\n *\n * @returns {Function|undefined}\n * The plugin (or `undefined`).\n */\n\n\nPlugin.getPlugin = getPlugin;\n/**\n * The name of the base plugin class as it is registered.\n *\n * @type {string}\n */\n\nPlugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME;\nPlugin.registerPlugin(BASE_PLUGIN_NAME, Plugin);\n/**\n * Documented in player.js\n *\n * @ignore\n */\n\nPlayer.prototype.usingPlugin = function (name) {\n return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true;\n};\n/**\n * Documented in player.js\n *\n * @ignore\n */\n\n\nPlayer.prototype.hasPlugin = function (name) {\n return !!pluginExists(name);\n};\n/**\n * Signals that a plugin is about to be set up on a player.\n *\n * @event Player#beforepluginsetup\n * @type {Plugin~PluginEventHash}\n */\n\n/**\n * Signals that a plugin is about to be set up on a player - by name. The name\n * is the name of the plugin.\n *\n * @event Player#beforepluginsetup:$name\n * @type {Plugin~PluginEventHash}\n */\n\n/**\n * Signals that a plugin has just been set up on a player.\n *\n * @event Player#pluginsetup\n * @type {Plugin~PluginEventHash}\n */\n\n/**\n * Signals that a plugin has just been set up on a player - by name. The name\n * is the name of the plugin.\n *\n * @event Player#pluginsetup:$name\n * @type {Plugin~PluginEventHash}\n */\n\n/**\n * @typedef {Object} Plugin~PluginEventHash\n *\n * @property {string} instance\n * For basic plugins, the return value of the plugin function. For\n * advanced plugins, the plugin instance on which the event is fired.\n *\n * @property {string} name\n * The name of the plugin.\n *\n * @property {string} plugin\n * For basic plugins, the plugin function. For advanced plugins, the\n * plugin class/constructor.\n */\n\n/**\n * @file extend.js\n * @module extend\n */\nvar hasLogged = false;\n/**\n * Used to subclass an existing class by emulating ES subclassing using the\n * `extends` keyword.\n *\n * @function\n * @deprecated\n * @example\n * var MyComponent = videojs.extend(videojs.getComponent('Component'), {\n * myCustomMethod: function() {\n * // Do things in my method.\n * }\n * });\n *\n * @param {Function} superClass\n * The class to inherit from\n *\n * @param {Object} [subClassMethods={}]\n * Methods of the new class\n *\n * @return {Function}\n * The new class with subClassMethods that inherited superClass.\n */\n\nvar extend = function extend(superClass, subClassMethods) {\n if (subClassMethods === void 0) {\n subClassMethods = {};\n }\n\n // Log a warning the first time extend is called to note that it is deprecated\n // It was previously deprecated in our documentation (guides, specifically),\n // but was never formally deprecated in code.\n if (!hasLogged) {\n log$1.warn('videojs.extend is deprecated as of Video.js 7.22.0 and will be removed in Video.js 8.0.0');\n hasLogged = true;\n }\n\n var subClass = function subClass() {\n superClass.apply(this, arguments);\n };\n\n var methods = {};\n\n if (typeof subClassMethods === 'object') {\n if (subClassMethods.constructor !== Object.prototype.constructor) {\n subClass = subClassMethods.constructor;\n }\n\n methods = subClassMethods;\n } else if (typeof subClassMethods === 'function') {\n subClass = subClassMethods;\n }\n\n _inherits(subClass, superClass); // this is needed for backward-compatibility and node compatibility.\n\n\n if (superClass) {\n subClass.super_ = superClass;\n } // Extend subObj's prototype with functions and other properties from props\n\n\n for (var name in methods) {\n if (methods.hasOwnProperty(name)) {\n subClass.prototype[name] = methods[name];\n }\n }\n\n return subClass;\n};\n\n/**\n * @file video.js\n * @module videojs\n */\n/**\n * Normalize an `id` value by trimming off a leading `#`\n *\n * @private\n * @param {string} id\n * A string, maybe with a leading `#`.\n *\n * @return {string}\n * The string, without any leading `#`.\n */\n\nvar normalizeId = function normalizeId(id) {\n return id.indexOf('#') === 0 ? id.slice(1) : id;\n};\n/**\n * The `videojs()` function doubles as the main function for users to create a\n * {@link Player} instance as well as the main library namespace.\n *\n * It can also be used as a getter for a pre-existing {@link Player} instance.\n * However, we _strongly_ recommend using `videojs.getPlayer()` for this\n * purpose because it avoids any potential for unintended initialization.\n *\n * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n * of our JSDoc template, we cannot properly document this as both a function\n * and a namespace, so its function signature is documented here.\n *\n * #### Arguments\n * ##### id\n * string|Element, **required**\n *\n * Video element or video element ID.\n *\n * ##### options\n * Object, optional\n *\n * Options object for providing settings.\n * See: [Options Guide](https://docs.videojs.com/tutorial-options.html).\n *\n * ##### ready\n * {@link Component~ReadyCallback}, optional\n *\n * A function to be called when the {@link Player} and {@link Tech} are ready.\n *\n * #### Return Value\n *\n * The `videojs()` function returns a {@link Player} instance.\n *\n * @namespace\n *\n * @borrows AudioTrack as AudioTrack\n * @borrows Component.getComponent as getComponent\n * @borrows module:computed-style~computedStyle as computedStyle\n * @borrows module:events.on as on\n * @borrows module:events.one as one\n * @borrows module:events.off as off\n * @borrows module:events.trigger as trigger\n * @borrows EventTarget as EventTarget\n * @borrows module:extend~extend as extend\n * @borrows module:fn.bind as bind\n * @borrows module:format-time.formatTime as formatTime\n * @borrows module:format-time.resetFormatTime as resetFormatTime\n * @borrows module:format-time.setFormatTime as setFormatTime\n * @borrows module:merge-options.mergeOptions as mergeOptions\n * @borrows module:middleware.use as use\n * @borrows Player.players as players\n * @borrows Plugin.registerPlugin as registerPlugin\n * @borrows Plugin.deregisterPlugin as deregisterPlugin\n * @borrows Plugin.getPlugins as getPlugins\n * @borrows Plugin.getPlugin as getPlugin\n * @borrows Plugin.getPluginVersion as getPluginVersion\n * @borrows Tech.getTech as getTech\n * @borrows Tech.registerTech as registerTech\n * @borrows TextTrack as TextTrack\n * @borrows module:time-ranges.createTimeRanges as createTimeRange\n * @borrows module:time-ranges.createTimeRanges as createTimeRanges\n * @borrows module:url.isCrossOrigin as isCrossOrigin\n * @borrows module:url.parseUrl as parseUrl\n * @borrows VideoTrack as VideoTrack\n *\n * @param {string|Element} id\n * Video element or video element ID.\n *\n * @param {Object} [options]\n * Options object for providing settings.\n * See: [Options Guide](https://docs.videojs.com/tutorial-options.html).\n *\n * @param {Component~ReadyCallback} [ready]\n * A function to be called when the {@link Player} and {@link Tech} are\n * ready.\n *\n * @return {Player}\n * The `videojs()` function returns a {@link Player|Player} instance.\n */\n\n\nfunction videojs(id, options, ready) {\n var player = videojs.getPlayer(id);\n\n if (player) {\n if (options) {\n log$1.warn(\"Player \\\"\" + id + \"\\\" is already initialised. Options will not be applied.\");\n }\n\n if (ready) {\n player.ready(ready);\n }\n\n return player;\n }\n\n var el = typeof id === 'string' ? $('#' + normalizeId(id)) : id;\n\n if (!isEl(el)) {\n throw new TypeError('The element or ID supplied is not valid. (videojs)');\n } // document.body.contains(el) will only check if el is contained within that one document.\n // This causes problems for elements in iframes.\n // Instead, use the element's ownerDocument instead of the global document.\n // This will make sure that the element is indeed in the dom of that document.\n // Additionally, check that the document in question has a default view.\n // If the document is no longer attached to the dom, the defaultView of the document will be null.\n\n\n if (!el.ownerDocument.defaultView || !el.ownerDocument.body.contains(el)) {\n log$1.warn('The element supplied is not included in the DOM');\n }\n\n options = options || {}; // Store a copy of the el before modification, if it is to be restored in destroy()\n // If div ingest, store the parent div\n\n if (options.restoreEl === true) {\n options.restoreEl = (el.parentNode && el.parentNode.hasAttribute('data-vjs-player') ? el.parentNode : el).cloneNode(true);\n }\n\n hooks('beforesetup').forEach(function (hookFunction) {\n var opts = hookFunction(el, mergeOptions$3(options));\n\n if (!isObject(opts) || Array.isArray(opts)) {\n log$1.error('please return an object in beforesetup hooks');\n return;\n }\n\n options = mergeOptions$3(options, opts);\n }); // We get the current \"Player\" component here in case an integration has\n // replaced it with a custom player.\n\n var PlayerComponent = Component$1.getComponent('Player');\n player = new PlayerComponent(el, options, ready);\n hooks('setup').forEach(function (hookFunction) {\n return hookFunction(player);\n });\n return player;\n}\n\nvideojs.hooks_ = hooks_;\nvideojs.hooks = hooks;\nvideojs.hook = hook;\nvideojs.hookOnce = hookOnce;\nvideojs.removeHook = removeHook; // Add default styles\n\nif (window$1.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) {\n var style = $('.vjs-styles-defaults');\n\n if (!style) {\n style = createStyleElement('vjs-styles-defaults');\n var head = $('head');\n\n if (head) {\n head.insertBefore(style, head.firstChild);\n }\n\n setTextContent(style, \"\\n .video-js {\\n width: 300px;\\n height: 150px;\\n }\\n\\n .vjs-fluid:not(.vjs-audio-only-mode) {\\n padding-top: 56.25%\\n }\\n \");\n }\n} // Run Auto-load players\n// You have to wait at least once in case this script is loaded after your\n// video in the DOM (weird behavior only with minified version)\n\n\nautoSetupTimeout(1, videojs);\n/**\n * Current Video.js version. Follows [semantic versioning](https://semver.org/).\n *\n * @type {string}\n */\n\nvideojs.VERSION = version$5;\n/**\n * The global options object. These are the settings that take effect\n * if no overrides are specified when the player is created.\n *\n * @type {Object}\n */\n\nvideojs.options = Player.prototype.options_;\n/**\n * Get an object with the currently created players, keyed by player ID\n *\n * @return {Object}\n * The created players\n */\n\nvideojs.getPlayers = function () {\n return Player.players;\n};\n/**\n * Get a single player based on an ID or DOM element.\n *\n * This is useful if you want to check if an element or ID has an associated\n * Video.js player, but not create one if it doesn't.\n *\n * @param {string|Element} id\n * An HTML element - ``, ``, or `` -\n * or a string matching the `id` of such an element.\n *\n * @return {Player|undefined}\n * A player instance or `undefined` if there is no player instance\n * matching the argument.\n */\n\n\nvideojs.getPlayer = function (id) {\n var players = Player.players;\n var tag;\n\n if (typeof id === 'string') {\n var nId = normalizeId(id);\n var player = players[nId];\n\n if (player) {\n return player;\n }\n\n tag = $('#' + nId);\n } else {\n tag = id;\n }\n\n if (isEl(tag)) {\n var _tag = tag,\n _player = _tag.player,\n playerId = _tag.playerId; // Element may have a `player` property referring to an already created\n // player instance. If so, return that.\n\n if (_player || players[playerId]) {\n return _player || players[playerId];\n }\n }\n};\n/**\n * Returns an array of all current players.\n *\n * @return {Array}\n * An array of all players. The array will be in the order that\n * `Object.keys` provides, which could potentially vary between\n * JavaScript engines.\n *\n */\n\n\nvideojs.getAllPlayers = function () {\n return (// Disposed players leave a key with a `null` value, so we need to make sure\n // we filter those out.\n Object.keys(Player.players).map(function (k) {\n return Player.players[k];\n }).filter(Boolean)\n );\n};\n\nvideojs.players = Player.players;\nvideojs.getComponent = Component$1.getComponent;\n/**\n * Register a component so it can referred to by name. Used when adding to other\n * components, either through addChild `component.addChild('myComponent')` or through\n * default children options `{ children: ['myComponent'] }`.\n *\n * > NOTE: You could also just initialize the component before adding.\n * `component.addChild(new MyComponent());`\n *\n * @param {string} name\n * The class name of the component\n *\n * @param {Component} comp\n * The component class\n *\n * @return {Component}\n * The newly registered component\n */\n\nvideojs.registerComponent = function (name, comp) {\n if (Tech.isTech(comp)) {\n log$1.warn(\"The \" + name + \" tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)\");\n }\n\n Component$1.registerComponent.call(Component$1, name, comp);\n};\n\nvideojs.getTech = Tech.getTech;\nvideojs.registerTech = Tech.registerTech;\nvideojs.use = use;\n/**\n * An object that can be returned by a middleware to signify\n * that the middleware is being terminated.\n *\n * @type {object}\n * @property {object} middleware.TERMINATOR\n */\n\nObject.defineProperty(videojs, 'middleware', {\n value: {},\n writeable: false,\n enumerable: true\n});\nObject.defineProperty(videojs.middleware, 'TERMINATOR', {\n value: TERMINATOR,\n writeable: false,\n enumerable: true\n});\n/**\n * A reference to the {@link module:browser|browser utility module} as an object.\n *\n * @type {Object}\n * @see {@link module:browser|browser}\n */\n\nvideojs.browser = browser;\n/**\n * Use {@link module:browser.TOUCH_ENABLED|browser.TOUCH_ENABLED} instead; only\n * included for backward-compatibility with 4.x.\n *\n * @deprecated Since version 5.0, use {@link module:browser.TOUCH_ENABLED|browser.TOUCH_ENABLED instead.\n * @type {boolean}\n */\n\nvideojs.TOUCH_ENABLED = TOUCH_ENABLED;\nvideojs.extend = extend;\nvideojs.mergeOptions = mergeOptions$3;\nvideojs.bind = bind;\nvideojs.registerPlugin = Plugin.registerPlugin;\nvideojs.deregisterPlugin = Plugin.deregisterPlugin;\n/**\n * Deprecated method to register a plugin with Video.js\n *\n * @deprecated videojs.plugin() is deprecated; use videojs.registerPlugin() instead\n *\n * @param {string} name\n * The plugin name\n *\n * @param {Plugin|Function} plugin\n * The plugin sub-class or function\n */\n\nvideojs.plugin = function (name, plugin) {\n log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');\n return Plugin.registerPlugin(name, plugin);\n};\n\nvideojs.getPlugins = Plugin.getPlugins;\nvideojs.getPlugin = Plugin.getPlugin;\nvideojs.getPluginVersion = Plugin.getPluginVersion;\n/**\n * Adding languages so that they're available to all players.\n * Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });`\n *\n * @param {string} code\n * The language code or dictionary property\n *\n * @param {Object} data\n * The data values to be translated\n *\n * @return {Object}\n * The resulting language dictionary object\n */\n\nvideojs.addLanguage = function (code, data) {\n var _mergeOptions;\n\n code = ('' + code).toLowerCase();\n videojs.options.languages = mergeOptions$3(videojs.options.languages, (_mergeOptions = {}, _mergeOptions[code] = data, _mergeOptions));\n return videojs.options.languages[code];\n};\n/**\n * A reference to the {@link module:log|log utility module} as an object.\n *\n * @type {Function}\n * @see {@link module:log|log}\n */\n\n\nvideojs.log = log$1;\nvideojs.createLogger = createLogger;\nvideojs.createTimeRange = videojs.createTimeRanges = createTimeRanges;\nvideojs.formatTime = formatTime;\nvideojs.setFormatTime = setFormatTime;\nvideojs.resetFormatTime = resetFormatTime;\nvideojs.parseUrl = parseUrl;\nvideojs.isCrossOrigin = isCrossOrigin;\nvideojs.EventTarget = EventTarget$2;\nvideojs.on = on;\nvideojs.one = one;\nvideojs.off = off;\nvideojs.trigger = trigger;\n/**\n * A cross-browser XMLHttpRequest wrapper.\n *\n * @function\n * @param {Object} options\n * Settings for the request.\n *\n * @return {XMLHttpRequest|XDomainRequest}\n * The request object.\n *\n * @see https://github.com/Raynos/xhr\n */\n\nvideojs.xhr = XHR;\nvideojs.TextTrack = TextTrack;\nvideojs.AudioTrack = AudioTrack;\nvideojs.VideoTrack = VideoTrack;\n['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(function (k) {\n videojs[k] = function () {\n log$1.warn(\"videojs.\" + k + \"() is deprecated; use videojs.dom.\" + k + \"() instead\");\n return Dom[k].apply(null, arguments);\n };\n});\nvideojs.computedStyle = computedStyle;\n/**\n * A reference to the {@link module:dom|DOM utility module} as an object.\n *\n * @type {Object}\n * @see {@link module:dom|dom}\n */\n\nvideojs.dom = Dom;\n/**\n * A reference to the {@link module:url|URL utility module} as an object.\n *\n * @type {Object}\n * @see {@link module:url|url}\n */\n\nvideojs.url = Url;\nvideojs.defineLazyProperty = defineLazyProperty; // Adding less ambiguous text for fullscreen button.\n// In a major update this could become the default text and key.\n\nvideojs.addLanguage('en', {\n 'Non-Fullscreen': 'Exit Fullscreen'\n});\n\n/*! @name @videojs/http-streaming @version 2.16.2 @license Apache-2.0 */\n/**\n * @file resolve-url.js - Handling how URLs are resolved and manipulated\n */\n\nvar resolveUrl = _resolveUrl;\n/**\n * Checks whether xhr request was redirected and returns correct url depending\n * on `handleManifestRedirects` option\n *\n * @api private\n *\n * @param {string} url - an url being requested\n * @param {XMLHttpRequest} req - xhr request result\n *\n * @return {string}\n */\n\nvar resolveManifestRedirect = function resolveManifestRedirect(handleManifestRedirect, url, req) {\n // To understand how the responseURL below is set and generated:\n // - https://fetch.spec.whatwg.org/#concept-response-url\n // - https://fetch.spec.whatwg.org/#atomic-http-redirect-handling\n if (handleManifestRedirect && req && req.responseURL && url !== req.responseURL) {\n return req.responseURL;\n }\n\n return url;\n};\n\nvar logger = function logger(source) {\n if (videojs.log.debug) {\n return videojs.log.debug.bind(videojs, 'VHS:', source + \" >\");\n }\n\n return function () {};\n};\n/**\n * ranges\n *\n * Utilities for working with TimeRanges.\n *\n */\n\n\nvar TIME_FUDGE_FACTOR = 1 / 30; // Comparisons between time values such as current time and the end of the buffered range\n// can be misleading because of precision differences or when the current media has poorly\n// aligned audio and video, which can cause values to be slightly off from what you would\n// expect. This value is what we consider to be safe to use in such comparisons to account\n// for these scenarios.\n\nvar SAFE_TIME_DELTA = TIME_FUDGE_FACTOR * 3;\n\nvar filterRanges = function filterRanges(timeRanges, predicate) {\n var results = [];\n var i;\n\n if (timeRanges && timeRanges.length) {\n // Search for ranges that match the predicate\n for (i = 0; i < timeRanges.length; i++) {\n if (predicate(timeRanges.start(i), timeRanges.end(i))) {\n results.push([timeRanges.start(i), timeRanges.end(i)]);\n }\n }\n }\n\n return videojs.createTimeRanges(results);\n};\n/**\n * Attempts to find the buffered TimeRange that contains the specified\n * time.\n *\n * @param {TimeRanges} buffered - the TimeRanges object to query\n * @param {number} time - the time to filter on.\n * @return {TimeRanges} a new TimeRanges object\n */\n\n\nvar findRange = function findRange(buffered, time) {\n return filterRanges(buffered, function (start, end) {\n return start - SAFE_TIME_DELTA <= time && end + SAFE_TIME_DELTA >= time;\n });\n};\n/**\n * Returns the TimeRanges that begin later than the specified time.\n *\n * @param {TimeRanges} timeRanges - the TimeRanges object to query\n * @param {number} time - the time to filter on.\n * @return {TimeRanges} a new TimeRanges object.\n */\n\n\nvar findNextRange = function findNextRange(timeRanges, time) {\n return filterRanges(timeRanges, function (start) {\n return start - TIME_FUDGE_FACTOR >= time;\n });\n};\n/**\n * Returns gaps within a list of TimeRanges\n *\n * @param {TimeRanges} buffered - the TimeRanges object\n * @return {TimeRanges} a TimeRanges object of gaps\n */\n\n\nvar findGaps = function findGaps(buffered) {\n if (buffered.length < 2) {\n return videojs.createTimeRanges();\n }\n\n var ranges = [];\n\n for (var i = 1; i < buffered.length; i++) {\n var start = buffered.end(i - 1);\n var end = buffered.start(i);\n ranges.push([start, end]);\n }\n\n return videojs.createTimeRanges(ranges);\n};\n/**\n * Calculate the intersection of two TimeRanges\n *\n * @param {TimeRanges} bufferA\n * @param {TimeRanges} bufferB\n * @return {TimeRanges} The interesection of `bufferA` with `bufferB`\n */\n\n\nvar bufferIntersection = function bufferIntersection(bufferA, bufferB) {\n var start = null;\n var end = null;\n var arity = 0;\n var extents = [];\n var ranges = [];\n\n if (!bufferA || !bufferA.length || !bufferB || !bufferB.length) {\n return videojs.createTimeRange();\n } // Handle the case where we have both buffers and create an\n // intersection of the two\n\n\n var count = bufferA.length; // A) Gather up all start and end times\n\n while (count--) {\n extents.push({\n time: bufferA.start(count),\n type: 'start'\n });\n extents.push({\n time: bufferA.end(count),\n type: 'end'\n });\n }\n\n count = bufferB.length;\n\n while (count--) {\n extents.push({\n time: bufferB.start(count),\n type: 'start'\n });\n extents.push({\n time: bufferB.end(count),\n type: 'end'\n });\n } // B) Sort them by time\n\n\n extents.sort(function (a, b) {\n return a.time - b.time;\n }); // C) Go along one by one incrementing arity for start and decrementing\n // arity for ends\n\n for (count = 0; count < extents.length; count++) {\n if (extents[count].type === 'start') {\n arity++; // D) If arity is ever incremented to 2 we are entering an\n // overlapping range\n\n if (arity === 2) {\n start = extents[count].time;\n }\n } else if (extents[count].type === 'end') {\n arity--; // E) If arity is ever decremented to 1 we leaving an\n // overlapping range\n\n if (arity === 1) {\n end = extents[count].time;\n }\n } // F) Record overlapping ranges\n\n\n if (start !== null && end !== null) {\n ranges.push([start, end]);\n start = null;\n end = null;\n }\n }\n\n return videojs.createTimeRanges(ranges);\n};\n/**\n * Gets a human readable string for a TimeRange\n *\n * @param {TimeRange} range\n * @return {string} a human readable string\n */\n\n\nvar printableRange = function printableRange(range) {\n var strArr = [];\n\n if (!range || !range.length) {\n return '';\n }\n\n for (var i = 0; i < range.length; i++) {\n strArr.push(range.start(i) + ' => ' + range.end(i));\n }\n\n return strArr.join(', ');\n};\n/**\n * Calculates the amount of time left in seconds until the player hits the end of the\n * buffer and causes a rebuffer\n *\n * @param {TimeRange} buffered\n * The state of the buffer\n * @param {Numnber} currentTime\n * The current time of the player\n * @param {number} playbackRate\n * The current playback rate of the player. Defaults to 1.\n * @return {number}\n * Time until the player has to start rebuffering in seconds.\n * @function timeUntilRebuffer\n */\n\n\nvar timeUntilRebuffer = function timeUntilRebuffer(buffered, currentTime, playbackRate) {\n if (playbackRate === void 0) {\n playbackRate = 1;\n }\n\n var bufferedEnd = buffered.length ? buffered.end(buffered.length - 1) : 0;\n return (bufferedEnd - currentTime) / playbackRate;\n};\n/**\n * Converts a TimeRanges object into an array representation\n *\n * @param {TimeRanges} timeRanges\n * @return {Array}\n */\n\n\nvar timeRangesToArray = function timeRangesToArray(timeRanges) {\n var timeRangesList = [];\n\n for (var i = 0; i < timeRanges.length; i++) {\n timeRangesList.push({\n start: timeRanges.start(i),\n end: timeRanges.end(i)\n });\n }\n\n return timeRangesList;\n};\n/**\n * Determines if two time range objects are different.\n *\n * @param {TimeRange} a\n * the first time range object to check\n *\n * @param {TimeRange} b\n * the second time range object to check\n *\n * @return {Boolean}\n * Whether the time range objects differ\n */\n\n\nvar isRangeDifferent = function isRangeDifferent(a, b) {\n // same object\n if (a === b) {\n return false;\n } // one or the other is undefined\n\n\n if (!a && b || !b && a) {\n return true;\n } // length is different\n\n\n if (a.length !== b.length) {\n return true;\n } // see if any start/end pair is different\n\n\n for (var i = 0; i < a.length; i++) {\n if (a.start(i) !== b.start(i) || a.end(i) !== b.end(i)) {\n return true;\n }\n } // if the length and every pair is the same\n // this is the same time range\n\n\n return false;\n};\n\nvar lastBufferedEnd = function lastBufferedEnd(a) {\n if (!a || !a.length || !a.end) {\n return;\n }\n\n return a.end(a.length - 1);\n};\n/**\n * A utility function to add up the amount of time in a timeRange\n * after a specified startTime.\n * ie:[[0, 10], [20, 40], [50, 60]] with a startTime 0\n * would return 40 as there are 40s seconds after 0 in the timeRange\n *\n * @param {TimeRange} range\n * The range to check against\n * @param {number} startTime\n * The time in the time range that you should start counting from\n *\n * @return {number}\n * The number of seconds in the buffer passed the specified time.\n */\n\n\nvar timeAheadOf = function timeAheadOf(range, startTime) {\n var time = 0;\n\n if (!range || !range.length) {\n return time;\n }\n\n for (var i = 0; i < range.length; i++) {\n var start = range.start(i);\n var end = range.end(i); // startTime is after this range entirely\n\n if (startTime > end) {\n continue;\n } // startTime is within this range\n\n\n if (startTime > start && startTime <= end) {\n time += end - startTime;\n continue;\n } // startTime is before this range.\n\n\n time += end - start;\n }\n\n return time;\n};\n/**\n * @file playlist.js\n *\n * Playlist related utilities.\n */\n\n\nvar createTimeRange = videojs.createTimeRange;\n/**\n * Get the duration of a segment, with special cases for\n * llhls segments that do not have a duration yet.\n *\n * @param {Object} playlist\n * the playlist that the segment belongs to.\n * @param {Object} segment\n * the segment to get a duration for.\n *\n * @return {number}\n * the segment duration\n */\n\nvar segmentDurationWithParts = function segmentDurationWithParts(playlist, segment) {\n // if this isn't a preload segment\n // then we will have a segment duration that is accurate.\n if (!segment.preload) {\n return segment.duration;\n } // otherwise we have to add up parts and preload hints\n // to get an up to date duration.\n\n\n var result = 0;\n (segment.parts || []).forEach(function (p) {\n result += p.duration;\n }); // for preload hints we have to use partTargetDuration\n // as they won't even have a duration yet.\n\n (segment.preloadHints || []).forEach(function (p) {\n if (p.type === 'PART') {\n result += playlist.partTargetDuration;\n }\n });\n return result;\n};\n/**\n * A function to get a combined list of parts and segments with durations\n * and indexes.\n *\n * @param {Playlist} playlist the playlist to get the list for.\n *\n * @return {Array} The part/segment list.\n */\n\n\nvar getPartsAndSegments = function getPartsAndSegments(playlist) {\n return (playlist.segments || []).reduce(function (acc, segment, si) {\n if (segment.parts) {\n segment.parts.forEach(function (part, pi) {\n acc.push({\n duration: part.duration,\n segmentIndex: si,\n partIndex: pi,\n part: part,\n segment: segment\n });\n });\n } else {\n acc.push({\n duration: segment.duration,\n segmentIndex: si,\n partIndex: null,\n segment: segment,\n part: null\n });\n }\n\n return acc;\n }, []);\n};\n\nvar getLastParts = function getLastParts(media) {\n var lastSegment = media.segments && media.segments.length && media.segments[media.segments.length - 1];\n return lastSegment && lastSegment.parts || [];\n};\n\nvar getKnownPartCount = function getKnownPartCount(_ref) {\n var preloadSegment = _ref.preloadSegment;\n\n if (!preloadSegment) {\n return;\n }\n\n var parts = preloadSegment.parts,\n preloadHints = preloadSegment.preloadHints;\n var partCount = (preloadHints || []).reduce(function (count, hint) {\n return count + (hint.type === 'PART' ? 1 : 0);\n }, 0);\n partCount += parts && parts.length ? parts.length : 0;\n return partCount;\n};\n/**\n * Get the number of seconds to delay from the end of a\n * live playlist.\n *\n * @param {Playlist} master the master playlist\n * @param {Playlist} media the media playlist\n * @return {number} the hold back in seconds.\n */\n\n\nvar liveEdgeDelay = function liveEdgeDelay(master, media) {\n if (media.endList) {\n return 0;\n } // dash suggestedPresentationDelay trumps everything\n\n\n if (master && master.suggestedPresentationDelay) {\n return master.suggestedPresentationDelay;\n }\n\n var hasParts = getLastParts(media).length > 0; // look for \"part\" delays from ll-hls first\n\n if (hasParts && media.serverControl && media.serverControl.partHoldBack) {\n return media.serverControl.partHoldBack;\n } else if (hasParts && media.partTargetDuration) {\n return media.partTargetDuration * 3; // finally look for full segment delays\n } else if (media.serverControl && media.serverControl.holdBack) {\n return media.serverControl.holdBack;\n } else if (media.targetDuration) {\n return media.targetDuration * 3;\n }\n\n return 0;\n};\n/**\n * walk backward until we find a duration we can use\n * or return a failure\n *\n * @param {Playlist} playlist the playlist to walk through\n * @param {Number} endSequence the mediaSequence to stop walking on\n */\n\n\nvar backwardDuration = function backwardDuration(playlist, endSequence) {\n var result = 0;\n var i = endSequence - playlist.mediaSequence; // if a start time is available for segment immediately following\n // the interval, use it\n\n var segment = playlist.segments[i]; // Walk backward until we find the latest segment with timeline\n // information that is earlier than endSequence\n\n if (segment) {\n if (typeof segment.start !== 'undefined') {\n return {\n result: segment.start,\n precise: true\n };\n }\n\n if (typeof segment.end !== 'undefined') {\n return {\n result: segment.end - segment.duration,\n precise: true\n };\n }\n }\n\n while (i--) {\n segment = playlist.segments[i];\n\n if (typeof segment.end !== 'undefined') {\n return {\n result: result + segment.end,\n precise: true\n };\n }\n\n result += segmentDurationWithParts(playlist, segment);\n\n if (typeof segment.start !== 'undefined') {\n return {\n result: result + segment.start,\n precise: true\n };\n }\n }\n\n return {\n result: result,\n precise: false\n };\n};\n/**\n * walk forward until we find a duration we can use\n * or return a failure\n *\n * @param {Playlist} playlist the playlist to walk through\n * @param {number} endSequence the mediaSequence to stop walking on\n */\n\n\nvar forwardDuration = function forwardDuration(playlist, endSequence) {\n var result = 0;\n var segment;\n var i = endSequence - playlist.mediaSequence; // Walk forward until we find the earliest segment with timeline\n // information\n\n for (; i < playlist.segments.length; i++) {\n segment = playlist.segments[i];\n\n if (typeof segment.start !== 'undefined') {\n return {\n result: segment.start - result,\n precise: true\n };\n }\n\n result += segmentDurationWithParts(playlist, segment);\n\n if (typeof segment.end !== 'undefined') {\n return {\n result: segment.end - result,\n precise: true\n };\n }\n } // indicate we didn't find a useful duration estimate\n\n\n return {\n result: -1,\n precise: false\n };\n};\n/**\n * Calculate the media duration from the segments associated with a\n * playlist. The duration of a subinterval of the available segments\n * may be calculated by specifying an end index.\n *\n * @param {Object} playlist a media playlist object\n * @param {number=} endSequence an exclusive upper boundary\n * for the playlist. Defaults to playlist length.\n * @param {number} expired the amount of time that has dropped\n * off the front of the playlist in a live scenario\n * @return {number} the duration between the first available segment\n * and end index.\n */\n\n\nvar intervalDuration = function intervalDuration(playlist, endSequence, expired) {\n if (typeof endSequence === 'undefined') {\n endSequence = playlist.mediaSequence + playlist.segments.length;\n }\n\n if (endSequence < playlist.mediaSequence) {\n return 0;\n } // do a backward walk to estimate the duration\n\n\n var backward = backwardDuration(playlist, endSequence);\n\n if (backward.precise) {\n // if we were able to base our duration estimate on timing\n // information provided directly from the Media Source, return\n // it\n return backward.result;\n } // walk forward to see if a precise duration estimate can be made\n // that way\n\n\n var forward = forwardDuration(playlist, endSequence);\n\n if (forward.precise) {\n // we found a segment that has been buffered and so it's\n // position is known precisely\n return forward.result;\n } // return the less-precise, playlist-based duration estimate\n\n\n return backward.result + expired;\n};\n/**\n * Calculates the duration of a playlist. If a start and end index\n * are specified, the duration will be for the subset of the media\n * timeline between those two indices. The total duration for live\n * playlists is always Infinity.\n *\n * @param {Object} playlist a media playlist object\n * @param {number=} endSequence an exclusive upper\n * boundary for the playlist. Defaults to the playlist media\n * sequence number plus its length.\n * @param {number=} expired the amount of time that has\n * dropped off the front of the playlist in a live scenario\n * @return {number} the duration between the start index and end\n * index.\n */\n\n\nvar duration = function duration(playlist, endSequence, expired) {\n if (!playlist) {\n return 0;\n }\n\n if (typeof expired !== 'number') {\n expired = 0;\n } // if a slice of the total duration is not requested, use\n // playlist-level duration indicators when they're present\n\n\n if (typeof endSequence === 'undefined') {\n // if present, use the duration specified in the playlist\n if (playlist.totalDuration) {\n return playlist.totalDuration;\n } // duration should be Infinity for live playlists\n\n\n if (!playlist.endList) {\n return window$1.Infinity;\n }\n } // calculate the total duration based on the segment durations\n\n\n return intervalDuration(playlist, endSequence, expired);\n};\n/**\n * Calculate the time between two indexes in the current playlist\n * neight the start- nor the end-index need to be within the current\n * playlist in which case, the targetDuration of the playlist is used\n * to approximate the durations of the segments\n *\n * @param {Array} options.durationList list to iterate over for durations.\n * @param {number} options.defaultDuration duration to use for elements before or after the durationList\n * @param {number} options.startIndex partsAndSegments index to start\n * @param {number} options.endIndex partsAndSegments index to end.\n * @return {number} the number of seconds between startIndex and endIndex\n */\n\n\nvar sumDurations = function sumDurations(_ref2) {\n var defaultDuration = _ref2.defaultDuration,\n durationList = _ref2.durationList,\n startIndex = _ref2.startIndex,\n endIndex = _ref2.endIndex;\n var durations = 0;\n\n if (startIndex > endIndex) {\n var _ref3 = [endIndex, startIndex];\n startIndex = _ref3[0];\n endIndex = _ref3[1];\n }\n\n if (startIndex < 0) {\n for (var i = startIndex; i < Math.min(0, endIndex); i++) {\n durations += defaultDuration;\n }\n\n startIndex = 0;\n }\n\n for (var _i = startIndex; _i < endIndex; _i++) {\n durations += durationList[_i].duration;\n }\n\n return durations;\n};\n/**\n * Calculates the playlist end time\n *\n * @param {Object} playlist a media playlist object\n * @param {number=} expired the amount of time that has\n * dropped off the front of the playlist in a live scenario\n * @param {boolean|false} useSafeLiveEnd a boolean value indicating whether or not the\n * playlist end calculation should consider the safe live end\n * (truncate the playlist end by three segments). This is normally\n * used for calculating the end of the playlist's seekable range.\n * This takes into account the value of liveEdgePadding.\n * Setting liveEdgePadding to 0 is equivalent to setting this to false.\n * @param {number} liveEdgePadding a number indicating how far from the end of the playlist we should be in seconds.\n * If this is provided, it is used in the safe live end calculation.\n * Setting useSafeLiveEnd=false or liveEdgePadding=0 are equivalent.\n * Corresponds to suggestedPresentationDelay in DASH manifests.\n * @return {number} the end time of playlist\n * @function playlistEnd\n */\n\n\nvar playlistEnd = function playlistEnd(playlist, expired, useSafeLiveEnd, liveEdgePadding) {\n if (!playlist || !playlist.segments) {\n return null;\n }\n\n if (playlist.endList) {\n return duration(playlist);\n }\n\n if (expired === null) {\n return null;\n }\n\n expired = expired || 0;\n var lastSegmentEndTime = intervalDuration(playlist, playlist.mediaSequence + playlist.segments.length, expired);\n\n if (useSafeLiveEnd) {\n liveEdgePadding = typeof liveEdgePadding === 'number' ? liveEdgePadding : liveEdgeDelay(null, playlist);\n lastSegmentEndTime -= liveEdgePadding;\n } // don't return a time less than zero\n\n\n return Math.max(0, lastSegmentEndTime);\n};\n/**\n * Calculates the interval of time that is currently seekable in a\n * playlist. The returned time ranges are relative to the earliest\n * moment in the specified playlist that is still available. A full\n * seekable implementation for live streams would need to offset\n * these values by the duration of content that has expired from the\n * stream.\n *\n * @param {Object} playlist a media playlist object\n * dropped off the front of the playlist in a live scenario\n * @param {number=} expired the amount of time that has\n * dropped off the front of the playlist in a live scenario\n * @param {number} liveEdgePadding how far from the end of the playlist we should be in seconds.\n * Corresponds to suggestedPresentationDelay in DASH manifests.\n * @return {TimeRanges} the periods of time that are valid targets\n * for seeking\n */\n\n\nvar seekable = function seekable(playlist, expired, liveEdgePadding) {\n var useSafeLiveEnd = true;\n var seekableStart = expired || 0;\n var seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd, liveEdgePadding);\n\n if (seekableEnd === null) {\n return createTimeRange();\n }\n\n return createTimeRange(seekableStart, seekableEnd);\n};\n/**\n * Determine the index and estimated starting time of the segment that\n * contains a specified playback position in a media playlist.\n *\n * @param {Object} options.playlist the media playlist to query\n * @param {number} options.currentTime The number of seconds since the earliest\n * possible position to determine the containing segment for\n * @param {number} options.startTime the time when the segment/part starts\n * @param {number} options.startingSegmentIndex the segment index to start looking at.\n * @param {number?} [options.startingPartIndex] the part index to look at within the segment.\n *\n * @return {Object} an object with partIndex, segmentIndex, and startTime.\n */\n\n\nvar getMediaInfoForTime = function getMediaInfoForTime(_ref4) {\n var playlist = _ref4.playlist,\n currentTime = _ref4.currentTime,\n startingSegmentIndex = _ref4.startingSegmentIndex,\n startingPartIndex = _ref4.startingPartIndex,\n startTime = _ref4.startTime,\n experimentalExactManifestTimings = _ref4.experimentalExactManifestTimings;\n var time = currentTime - startTime;\n var partsAndSegments = getPartsAndSegments(playlist);\n var startIndex = 0;\n\n for (var i = 0; i < partsAndSegments.length; i++) {\n var partAndSegment = partsAndSegments[i];\n\n if (startingSegmentIndex !== partAndSegment.segmentIndex) {\n continue;\n } // skip this if part index does not match.\n\n\n if (typeof startingPartIndex === 'number' && typeof partAndSegment.partIndex === 'number' && startingPartIndex !== partAndSegment.partIndex) {\n continue;\n }\n\n startIndex = i;\n break;\n }\n\n if (time < 0) {\n // Walk backward from startIndex in the playlist, adding durations\n // until we find a segment that contains `time` and return it\n if (startIndex > 0) {\n for (var _i2 = startIndex - 1; _i2 >= 0; _i2--) {\n var _partAndSegment = partsAndSegments[_i2];\n time += _partAndSegment.duration;\n\n if (experimentalExactManifestTimings) {\n if (time < 0) {\n continue;\n }\n } else if (time + TIME_FUDGE_FACTOR <= 0) {\n continue;\n }\n\n return {\n partIndex: _partAndSegment.partIndex,\n segmentIndex: _partAndSegment.segmentIndex,\n startTime: startTime - sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: partsAndSegments,\n startIndex: startIndex,\n endIndex: _i2\n })\n };\n }\n } // We were unable to find a good segment within the playlist\n // so select the first segment\n\n\n return {\n partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,\n segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,\n startTime: currentTime\n };\n } // When startIndex is negative, we first walk forward to first segment\n // adding target durations. If we \"run out of time\" before getting to\n // the first segment, return the first segment\n\n\n if (startIndex < 0) {\n for (var _i3 = startIndex; _i3 < 0; _i3++) {\n time -= playlist.targetDuration;\n\n if (time < 0) {\n return {\n partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,\n segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,\n startTime: currentTime\n };\n }\n }\n\n startIndex = 0;\n } // Walk forward from startIndex in the playlist, subtracting durations\n // until we find a segment that contains `time` and return it\n\n\n for (var _i4 = startIndex; _i4 < partsAndSegments.length; _i4++) {\n var _partAndSegment2 = partsAndSegments[_i4];\n time -= _partAndSegment2.duration;\n\n if (experimentalExactManifestTimings) {\n if (time > 0) {\n continue;\n }\n } else if (time - TIME_FUDGE_FACTOR >= 0) {\n continue;\n }\n\n return {\n partIndex: _partAndSegment2.partIndex,\n segmentIndex: _partAndSegment2.segmentIndex,\n startTime: startTime + sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: partsAndSegments,\n startIndex: startIndex,\n endIndex: _i4\n })\n };\n } // We are out of possible candidates so load the last one...\n\n\n return {\n segmentIndex: partsAndSegments[partsAndSegments.length - 1].segmentIndex,\n partIndex: partsAndSegments[partsAndSegments.length - 1].partIndex,\n startTime: currentTime\n };\n};\n/**\n * Check whether the playlist is blacklisted or not.\n *\n * @param {Object} playlist the media playlist object\n * @return {boolean} whether the playlist is blacklisted or not\n * @function isBlacklisted\n */\n\n\nvar isBlacklisted = function isBlacklisted(playlist) {\n return playlist.excludeUntil && playlist.excludeUntil > Date.now();\n};\n/**\n * Check whether the playlist is compatible with current playback configuration or has\n * been blacklisted permanently for being incompatible.\n *\n * @param {Object} playlist the media playlist object\n * @return {boolean} whether the playlist is incompatible or not\n * @function isIncompatible\n */\n\n\nvar isIncompatible = function isIncompatible(playlist) {\n return playlist.excludeUntil && playlist.excludeUntil === Infinity;\n};\n/**\n * Check whether the playlist is enabled or not.\n *\n * @param {Object} playlist the media playlist object\n * @return {boolean} whether the playlist is enabled or not\n * @function isEnabled\n */\n\n\nvar isEnabled = function isEnabled(playlist) {\n var blacklisted = isBlacklisted(playlist);\n return !playlist.disabled && !blacklisted;\n};\n/**\n * Check whether the playlist has been manually disabled through the representations api.\n *\n * @param {Object} playlist the media playlist object\n * @return {boolean} whether the playlist is disabled manually or not\n * @function isDisabled\n */\n\n\nvar isDisabled = function isDisabled(playlist) {\n return playlist.disabled;\n};\n/**\n * Returns whether the current playlist is an AES encrypted HLS stream\n *\n * @return {boolean} true if it's an AES encrypted HLS stream\n */\n\n\nvar isAes = function isAes(media) {\n for (var i = 0; i < media.segments.length; i++) {\n if (media.segments[i].key) {\n return true;\n }\n }\n\n return false;\n};\n/**\n * Checks if the playlist has a value for the specified attribute\n *\n * @param {string} attr\n * Attribute to check for\n * @param {Object} playlist\n * The media playlist object\n * @return {boolean}\n * Whether the playlist contains a value for the attribute or not\n * @function hasAttribute\n */\n\n\nvar hasAttribute = function hasAttribute(attr, playlist) {\n return playlist.attributes && playlist.attributes[attr];\n};\n/**\n * Estimates the time required to complete a segment download from the specified playlist\n *\n * @param {number} segmentDuration\n * Duration of requested segment\n * @param {number} bandwidth\n * Current measured bandwidth of the player\n * @param {Object} playlist\n * The media playlist object\n * @param {number=} bytesReceived\n * Number of bytes already received for the request. Defaults to 0\n * @return {number|NaN}\n * The estimated time to request the segment. NaN if bandwidth information for\n * the given playlist is unavailable\n * @function estimateSegmentRequestTime\n */\n\n\nvar estimateSegmentRequestTime = function estimateSegmentRequestTime(segmentDuration, bandwidth, playlist, bytesReceived) {\n if (bytesReceived === void 0) {\n bytesReceived = 0;\n }\n\n if (!hasAttribute('BANDWIDTH', playlist)) {\n return NaN;\n }\n\n var size = segmentDuration * playlist.attributes.BANDWIDTH;\n return (size - bytesReceived * 8) / bandwidth;\n};\n/*\n * Returns whether the current playlist is the lowest rendition\n *\n * @return {Boolean} true if on lowest rendition\n */\n\n\nvar isLowestEnabledRendition = function isLowestEnabledRendition(master, media) {\n if (master.playlists.length === 1) {\n return true;\n }\n\n var currentBandwidth = media.attributes.BANDWIDTH || Number.MAX_VALUE;\n return master.playlists.filter(function (playlist) {\n if (!isEnabled(playlist)) {\n return false;\n }\n\n return (playlist.attributes.BANDWIDTH || 0) < currentBandwidth;\n }).length === 0;\n};\n\nvar playlistMatch = function playlistMatch(a, b) {\n // both playlits are null\n // or only one playlist is non-null\n // no match\n if (!a && !b || !a && b || a && !b) {\n return false;\n } // playlist objects are the same, match\n\n\n if (a === b) {\n return true;\n } // first try to use id as it should be the most\n // accurate\n\n\n if (a.id && b.id && a.id === b.id) {\n return true;\n } // next try to use reslovedUri as it should be the\n // second most accurate.\n\n\n if (a.resolvedUri && b.resolvedUri && a.resolvedUri === b.resolvedUri) {\n return true;\n } // finally try to use uri as it should be accurate\n // but might miss a few cases for relative uris\n\n\n if (a.uri && b.uri && a.uri === b.uri) {\n return true;\n }\n\n return false;\n};\n\nvar someAudioVariant = function someAudioVariant(master, callback) {\n var AUDIO = master && master.mediaGroups && master.mediaGroups.AUDIO || {};\n var found = false;\n\n for (var groupName in AUDIO) {\n for (var label in AUDIO[groupName]) {\n found = callback(AUDIO[groupName][label]);\n\n if (found) {\n break;\n }\n }\n\n if (found) {\n break;\n }\n }\n\n return !!found;\n};\n\nvar isAudioOnly = function isAudioOnly(master) {\n // we are audio only if we have no main playlists but do\n // have media group playlists.\n if (!master || !master.playlists || !master.playlists.length) {\n // without audio variants or playlists this\n // is not an audio only master.\n var found = someAudioVariant(master, function (variant) {\n return variant.playlists && variant.playlists.length || variant.uri;\n });\n return found;\n } // if every playlist has only an audio codec it is audio only\n\n\n var _loop = function _loop(i) {\n var playlist = master.playlists[i];\n var CODECS = playlist.attributes && playlist.attributes.CODECS; // all codecs are audio, this is an audio playlist.\n\n if (CODECS && CODECS.split(',').every(function (c) {\n return isAudioCodec(c);\n })) {\n return \"continue\";\n } // playlist is in an audio group it is audio only\n\n\n var found = someAudioVariant(master, function (variant) {\n return playlistMatch(playlist, variant);\n });\n\n if (found) {\n return \"continue\";\n } // if we make it here this playlist isn't audio and we\n // are not audio only\n\n\n return {\n v: false\n };\n };\n\n for (var i = 0; i < master.playlists.length; i++) {\n var _ret = _loop(i);\n\n if (_ret === \"continue\") continue;\n if (typeof _ret === \"object\") return _ret.v;\n } // if we make it past every playlist without returning, then\n // this is an audio only playlist.\n\n\n return true;\n}; // exports\n\n\nvar Playlist = {\n liveEdgeDelay: liveEdgeDelay,\n duration: duration,\n seekable: seekable,\n getMediaInfoForTime: getMediaInfoForTime,\n isEnabled: isEnabled,\n isDisabled: isDisabled,\n isBlacklisted: isBlacklisted,\n isIncompatible: isIncompatible,\n playlistEnd: playlistEnd,\n isAes: isAes,\n hasAttribute: hasAttribute,\n estimateSegmentRequestTime: estimateSegmentRequestTime,\n isLowestEnabledRendition: isLowestEnabledRendition,\n isAudioOnly: isAudioOnly,\n playlistMatch: playlistMatch,\n segmentDurationWithParts: segmentDurationWithParts\n};\nvar log = videojs.log;\n\nvar createPlaylistID = function createPlaylistID(index, uri) {\n return index + \"-\" + uri;\n}; // default function for creating a group id\n\n\nvar groupID = function groupID(type, group, label) {\n return \"placeholder-uri-\" + type + \"-\" + group + \"-\" + label;\n};\n/**\n * Parses a given m3u8 playlist\n *\n * @param {Function} [onwarn]\n * a function to call when the parser triggers a warning event.\n * @param {Function} [oninfo]\n * a function to call when the parser triggers an info event.\n * @param {string} manifestString\n * The downloaded manifest string\n * @param {Object[]} [customTagParsers]\n * An array of custom tag parsers for the m3u8-parser instance\n * @param {Object[]} [customTagMappers]\n * An array of custom tag mappers for the m3u8-parser instance\n * @param {boolean} [experimentalLLHLS=false]\n * Whether to keep ll-hls features in the manifest after parsing.\n * @return {Object}\n * The manifest object\n */\n\n\nvar parseManifest = function parseManifest(_ref) {\n var onwarn = _ref.onwarn,\n oninfo = _ref.oninfo,\n manifestString = _ref.manifestString,\n _ref$customTagParsers = _ref.customTagParsers,\n customTagParsers = _ref$customTagParsers === void 0 ? [] : _ref$customTagParsers,\n _ref$customTagMappers = _ref.customTagMappers,\n customTagMappers = _ref$customTagMappers === void 0 ? [] : _ref$customTagMappers,\n experimentalLLHLS = _ref.experimentalLLHLS;\n var parser = new Parser();\n\n if (onwarn) {\n parser.on('warn', onwarn);\n }\n\n if (oninfo) {\n parser.on('info', oninfo);\n }\n\n customTagParsers.forEach(function (customParser) {\n return parser.addParser(customParser);\n });\n customTagMappers.forEach(function (mapper) {\n return parser.addTagMapper(mapper);\n });\n parser.push(manifestString);\n parser.end();\n var manifest = parser.manifest; // remove llhls features from the parsed manifest\n // if we don't want llhls support.\n\n if (!experimentalLLHLS) {\n ['preloadSegment', 'skip', 'serverControl', 'renditionReports', 'partInf', 'partTargetDuration'].forEach(function (k) {\n if (manifest.hasOwnProperty(k)) {\n delete manifest[k];\n }\n });\n\n if (manifest.segments) {\n manifest.segments.forEach(function (segment) {\n ['parts', 'preloadHints'].forEach(function (k) {\n if (segment.hasOwnProperty(k)) {\n delete segment[k];\n }\n });\n });\n }\n }\n\n if (!manifest.targetDuration) {\n var targetDuration = 10;\n\n if (manifest.segments && manifest.segments.length) {\n targetDuration = manifest.segments.reduce(function (acc, s) {\n return Math.max(acc, s.duration);\n }, 0);\n }\n\n if (onwarn) {\n onwarn(\"manifest has no targetDuration defaulting to \" + targetDuration);\n }\n\n manifest.targetDuration = targetDuration;\n }\n\n var parts = getLastParts(manifest);\n\n if (parts.length && !manifest.partTargetDuration) {\n var partTargetDuration = parts.reduce(function (acc, p) {\n return Math.max(acc, p.duration);\n }, 0);\n\n if (onwarn) {\n onwarn(\"manifest has no partTargetDuration defaulting to \" + partTargetDuration);\n log.error('LL-HLS manifest has parts but lacks required #EXT-X-PART-INF:PART-TARGET value. See https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis-09#section-4.4.3.7. Playback is not guaranteed.');\n }\n\n manifest.partTargetDuration = partTargetDuration;\n }\n\n return manifest;\n};\n/**\n * Loops through all supported media groups in master and calls the provided\n * callback for each group\n *\n * @param {Object} master\n * The parsed master manifest object\n * @param {Function} callback\n * Callback to call for each media group\n */\n\n\nvar forEachMediaGroup = function forEachMediaGroup(master, callback) {\n if (!master.mediaGroups) {\n return;\n }\n\n ['AUDIO', 'SUBTITLES'].forEach(function (mediaType) {\n if (!master.mediaGroups[mediaType]) {\n return;\n }\n\n for (var groupKey in master.mediaGroups[mediaType]) {\n for (var labelKey in master.mediaGroups[mediaType][groupKey]) {\n var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];\n callback(mediaProperties, mediaType, groupKey, labelKey);\n }\n }\n });\n};\n/**\n * Adds properties and attributes to the playlist to keep consistent functionality for\n * playlists throughout VHS.\n *\n * @param {Object} config\n * Arguments object\n * @param {Object} config.playlist\n * The media playlist\n * @param {string} [config.uri]\n * The uri to the media playlist (if media playlist is not from within a master\n * playlist)\n * @param {string} id\n * ID to use for the playlist\n */\n\n\nvar setupMediaPlaylist = function setupMediaPlaylist(_ref2) {\n var playlist = _ref2.playlist,\n uri = _ref2.uri,\n id = _ref2.id;\n playlist.id = id;\n playlist.playlistErrors_ = 0;\n\n if (uri) {\n // For media playlists, m3u8-parser does not have access to a URI, as HLS media\n // playlists do not contain their own source URI, but one is needed for consistency in\n // VHS.\n playlist.uri = uri;\n } // For HLS master playlists, even though certain attributes MUST be defined, the\n // stream may still be played without them.\n // For HLS media playlists, m3u8-parser does not attach an attributes object to the\n // manifest.\n //\n // To avoid undefined reference errors through the project, and make the code easier\n // to write/read, add an empty attributes object for these cases.\n\n\n playlist.attributes = playlist.attributes || {};\n};\n/**\n * Adds ID, resolvedUri, and attributes properties to each playlist of the master, where\n * necessary. In addition, creates playlist IDs for each playlist and adds playlist ID to\n * playlist references to the playlists array.\n *\n * @param {Object} master\n * The master playlist\n */\n\n\nvar setupMediaPlaylists = function setupMediaPlaylists(master) {\n var i = master.playlists.length;\n\n while (i--) {\n var playlist = master.playlists[i];\n setupMediaPlaylist({\n playlist: playlist,\n id: createPlaylistID(i, playlist.uri)\n });\n playlist.resolvedUri = resolveUrl(master.uri, playlist.uri);\n master.playlists[playlist.id] = playlist; // URI reference added for backwards compatibility\n\n master.playlists[playlist.uri] = playlist; // Although the spec states an #EXT-X-STREAM-INF tag MUST have a BANDWIDTH attribute,\n // the stream can be played without it. Although an attributes property may have been\n // added to the playlist to prevent undefined references, issue a warning to fix the\n // manifest.\n\n if (!playlist.attributes.BANDWIDTH) {\n log.warn('Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.');\n }\n }\n};\n/**\n * Adds resolvedUri properties to each media group.\n *\n * @param {Object} master\n * The master playlist\n */\n\n\nvar resolveMediaGroupUris = function resolveMediaGroupUris(master) {\n forEachMediaGroup(master, function (properties) {\n if (properties.uri) {\n properties.resolvedUri = resolveUrl(master.uri, properties.uri);\n }\n });\n};\n/**\n * Creates a master playlist wrapper to insert a sole media playlist into.\n *\n * @param {Object} media\n * Media playlist\n * @param {string} uri\n * The media URI\n *\n * @return {Object}\n * Master playlist\n */\n\n\nvar masterForMedia = function masterForMedia(media, uri) {\n var id = createPlaylistID(0, uri);\n var master = {\n mediaGroups: {\n 'AUDIO': {},\n 'VIDEO': {},\n 'CLOSED-CAPTIONS': {},\n 'SUBTITLES': {}\n },\n uri: window$1.location.href,\n resolvedUri: window$1.location.href,\n playlists: [{\n uri: uri,\n id: id,\n resolvedUri: uri,\n // m3u8-parser does not attach an attributes property to media playlists so make\n // sure that the property is attached to avoid undefined reference errors\n attributes: {}\n }]\n }; // set up ID reference\n\n master.playlists[id] = master.playlists[0]; // URI reference added for backwards compatibility\n\n master.playlists[uri] = master.playlists[0];\n return master;\n};\n/**\n * Does an in-place update of the master manifest to add updated playlist URI references\n * as well as other properties needed by VHS that aren't included by the parser.\n *\n * @param {Object} master\n * Master manifest object\n * @param {string} uri\n * The source URI\n * @param {function} createGroupID\n * A function to determine how to create the groupID for mediaGroups\n */\n\n\nvar addPropertiesToMaster = function addPropertiesToMaster(master, uri, createGroupID) {\n if (createGroupID === void 0) {\n createGroupID = groupID;\n }\n\n master.uri = uri;\n\n for (var i = 0; i < master.playlists.length; i++) {\n if (!master.playlists[i].uri) {\n // Set up phony URIs for the playlists since playlists are referenced by their URIs\n // throughout VHS, but some formats (e.g., DASH) don't have external URIs\n // TODO: consider adding dummy URIs in mpd-parser\n var phonyUri = \"placeholder-uri-\" + i;\n master.playlists[i].uri = phonyUri;\n }\n }\n\n var audioOnlyMaster = isAudioOnly(master);\n forEachMediaGroup(master, function (properties, mediaType, groupKey, labelKey) {\n // add a playlist array under properties\n if (!properties.playlists || !properties.playlists.length) {\n // If the manifest is audio only and this media group does not have a uri, check\n // if the media group is located in the main list of playlists. If it is, don't add\n // placeholder properties as it shouldn't be considered an alternate audio track.\n if (audioOnlyMaster && mediaType === 'AUDIO' && !properties.uri) {\n for (var _i = 0; _i < master.playlists.length; _i++) {\n var p = master.playlists[_i];\n\n if (p.attributes && p.attributes.AUDIO && p.attributes.AUDIO === groupKey) {\n return;\n }\n }\n }\n\n properties.playlists = [_extends({}, properties)];\n }\n\n properties.playlists.forEach(function (p, i) {\n var groupId = createGroupID(mediaType, groupKey, labelKey, p);\n var id = createPlaylistID(i, groupId);\n\n if (p.uri) {\n p.resolvedUri = p.resolvedUri || resolveUrl(master.uri, p.uri);\n } else {\n // DEPRECATED, this has been added to prevent a breaking change.\n // previously we only ever had a single media group playlist, so\n // we mark the first playlist uri without prepending the index as we used to\n // ideally we would do all of the playlists the same way.\n p.uri = i === 0 ? groupId : id; // don't resolve a placeholder uri to an absolute url, just use\n // the placeholder again\n\n p.resolvedUri = p.uri;\n }\n\n p.id = p.id || id; // add an empty attributes object, all playlists are\n // expected to have this.\n\n p.attributes = p.attributes || {}; // setup ID and URI references (URI for backwards compatibility)\n\n master.playlists[p.id] = p;\n master.playlists[p.uri] = p;\n });\n });\n setupMediaPlaylists(master);\n resolveMediaGroupUris(master);\n};\n\nvar mergeOptions$2 = videojs.mergeOptions,\n EventTarget$1 = videojs.EventTarget;\n\nvar addLLHLSQueryDirectives = function addLLHLSQueryDirectives(uri, media) {\n if (media.endList || !media.serverControl) {\n return uri;\n }\n\n var parameters = {};\n\n if (media.serverControl.canBlockReload) {\n var preloadSegment = media.preloadSegment; // next msn is a zero based value, length is not.\n\n var nextMSN = media.mediaSequence + media.segments.length; // If preload segment has parts then it is likely\n // that we are going to request a part of that preload segment.\n // the logic below is used to determine that.\n\n if (preloadSegment) {\n var parts = preloadSegment.parts || []; // _HLS_part is a zero based index\n\n var nextPart = getKnownPartCount(media) - 1; // if nextPart is > -1 and not equal to just the\n // length of parts, then we know we had part preload hints\n // and we need to add the _HLS_part= query\n\n if (nextPart > -1 && nextPart !== parts.length - 1) {\n // add existing parts to our preload hints\n // eslint-disable-next-line\n parameters._HLS_part = nextPart;\n } // this if statement makes sure that we request the msn\n // of the preload segment if:\n // 1. the preload segment had parts (and was not yet a full segment)\n // but was added to our segments array\n // 2. the preload segment had preload hints for parts that are not in\n // the manifest yet.\n // in all other cases we want the segment after the preload segment\n // which will be given by using media.segments.length because it is 1 based\n // rather than 0 based.\n\n\n if (nextPart > -1 || parts.length) {\n nextMSN--;\n }\n } // add _HLS_msn= in front of any _HLS_part query\n // eslint-disable-next-line\n\n\n parameters._HLS_msn = nextMSN;\n }\n\n if (media.serverControl && media.serverControl.canSkipUntil) {\n // add _HLS_skip= infront of all other queries.\n // eslint-disable-next-line\n parameters._HLS_skip = media.serverControl.canSkipDateranges ? 'v2' : 'YES';\n }\n\n if (Object.keys(parameters).length) {\n var parsedUri = new window$1.URL(uri);\n ['_HLS_skip', '_HLS_msn', '_HLS_part'].forEach(function (name) {\n if (!parameters.hasOwnProperty(name)) {\n return;\n }\n\n parsedUri.searchParams.set(name, parameters[name]);\n });\n uri = parsedUri.toString();\n }\n\n return uri;\n};\n/**\n * Returns a new segment object with properties and\n * the parts array merged.\n *\n * @param {Object} a the old segment\n * @param {Object} b the new segment\n *\n * @return {Object} the merged segment\n */\n\n\nvar updateSegment = function updateSegment(a, b) {\n if (!a) {\n return b;\n }\n\n var result = mergeOptions$2(a, b); // if only the old segment has preload hints\n // and the new one does not, remove preload hints.\n\n if (a.preloadHints && !b.preloadHints) {\n delete result.preloadHints;\n } // if only the old segment has parts\n // then the parts are no longer valid\n\n\n if (a.parts && !b.parts) {\n delete result.parts; // if both segments have parts\n // copy part propeties from the old segment\n // to the new one.\n } else if (a.parts && b.parts) {\n for (var i = 0; i < b.parts.length; i++) {\n if (a.parts && a.parts[i]) {\n result.parts[i] = mergeOptions$2(a.parts[i], b.parts[i]);\n }\n }\n } // set skipped to false for segments that have\n // have had information merged from the old segment.\n\n\n if (!a.skipped && b.skipped) {\n result.skipped = false;\n } // set preload to false for segments that have\n // had information added in the new segment.\n\n\n if (a.preload && !b.preload) {\n result.preload = false;\n }\n\n return result;\n};\n/**\n * Returns a new array of segments that is the result of merging\n * properties from an older list of segments onto an updated\n * list. No properties on the updated playlist will be ovewritten.\n *\n * @param {Array} original the outdated list of segments\n * @param {Array} update the updated list of segments\n * @param {number=} offset the index of the first update\n * segment in the original segment list. For non-live playlists,\n * this should always be zero and does not need to be\n * specified. For live playlists, it should be the difference\n * between the media sequence numbers in the original and updated\n * playlists.\n * @return {Array} a list of merged segment objects\n */\n\n\nvar updateSegments = function updateSegments(original, update, offset) {\n var oldSegments = original.slice();\n var newSegments = update.slice();\n offset = offset || 0;\n var result = [];\n var currentMap;\n\n for (var newIndex = 0; newIndex < newSegments.length; newIndex++) {\n var oldSegment = oldSegments[newIndex + offset];\n var newSegment = newSegments[newIndex];\n\n if (oldSegment) {\n currentMap = oldSegment.map || currentMap;\n result.push(updateSegment(oldSegment, newSegment));\n } else {\n // carry over map to new segment if it is missing\n if (currentMap && !newSegment.map) {\n newSegment.map = currentMap;\n }\n\n result.push(newSegment);\n }\n }\n\n return result;\n};\n\nvar resolveSegmentUris = function resolveSegmentUris(segment, baseUri) {\n // preloadSegment will not have a uri at all\n // as the segment isn't actually in the manifest yet, only parts\n if (!segment.resolvedUri && segment.uri) {\n segment.resolvedUri = resolveUrl(baseUri, segment.uri);\n }\n\n if (segment.key && !segment.key.resolvedUri) {\n segment.key.resolvedUri = resolveUrl(baseUri, segment.key.uri);\n }\n\n if (segment.map && !segment.map.resolvedUri) {\n segment.map.resolvedUri = resolveUrl(baseUri, segment.map.uri);\n }\n\n if (segment.map && segment.map.key && !segment.map.key.resolvedUri) {\n segment.map.key.resolvedUri = resolveUrl(baseUri, segment.map.key.uri);\n }\n\n if (segment.parts && segment.parts.length) {\n segment.parts.forEach(function (p) {\n if (p.resolvedUri) {\n return;\n }\n\n p.resolvedUri = resolveUrl(baseUri, p.uri);\n });\n }\n\n if (segment.preloadHints && segment.preloadHints.length) {\n segment.preloadHints.forEach(function (p) {\n if (p.resolvedUri) {\n return;\n }\n\n p.resolvedUri = resolveUrl(baseUri, p.uri);\n });\n }\n};\n\nvar getAllSegments = function getAllSegments(media) {\n var segments = media.segments || [];\n var preloadSegment = media.preloadSegment; // a preloadSegment with only preloadHints is not currently\n // a usable segment, only include a preloadSegment that has\n // parts.\n\n if (preloadSegment && preloadSegment.parts && preloadSegment.parts.length) {\n // if preloadHints has a MAP that means that the\n // init segment is going to change. We cannot use any of the parts\n // from this preload segment.\n if (preloadSegment.preloadHints) {\n for (var i = 0; i < preloadSegment.preloadHints.length; i++) {\n if (preloadSegment.preloadHints[i].type === 'MAP') {\n return segments;\n }\n }\n } // set the duration for our preload segment to target duration.\n\n\n preloadSegment.duration = media.targetDuration;\n preloadSegment.preload = true;\n segments.push(preloadSegment);\n }\n\n return segments;\n}; // consider the playlist unchanged if the playlist object is the same or\n// the number of segments is equal, the media sequence number is unchanged,\n// and this playlist hasn't become the end of the playlist\n\n\nvar isPlaylistUnchanged = function isPlaylistUnchanged(a, b) {\n return a === b || a.segments && b.segments && a.segments.length === b.segments.length && a.endList === b.endList && a.mediaSequence === b.mediaSequence && a.preloadSegment === b.preloadSegment;\n};\n/**\n * Returns a new master playlist that is the result of merging an\n * updated media playlist into the original version. If the\n * updated media playlist does not match any of the playlist\n * entries in the original master playlist, null is returned.\n *\n * @param {Object} master a parsed master M3U8 object\n * @param {Object} media a parsed media M3U8 object\n * @return {Object} a new object that represents the original\n * master playlist with the updated media playlist merged in, or\n * null if the merge produced no change.\n */\n\n\nvar updateMaster$1 = function updateMaster(master, newMedia, unchangedCheck) {\n if (unchangedCheck === void 0) {\n unchangedCheck = isPlaylistUnchanged;\n }\n\n var result = mergeOptions$2(master, {});\n var oldMedia = result.playlists[newMedia.id];\n\n if (!oldMedia) {\n return null;\n }\n\n if (unchangedCheck(oldMedia, newMedia)) {\n return null;\n }\n\n newMedia.segments = getAllSegments(newMedia);\n var mergedPlaylist = mergeOptions$2(oldMedia, newMedia); // always use the new media's preload segment\n\n if (mergedPlaylist.preloadSegment && !newMedia.preloadSegment) {\n delete mergedPlaylist.preloadSegment;\n } // if the update could overlap existing segment information, merge the two segment lists\n\n\n if (oldMedia.segments) {\n if (newMedia.skip) {\n newMedia.segments = newMedia.segments || []; // add back in objects for skipped segments, so that we merge\n // old properties into the new segments\n\n for (var i = 0; i < newMedia.skip.skippedSegments; i++) {\n newMedia.segments.unshift({\n skipped: true\n });\n }\n }\n\n mergedPlaylist.segments = updateSegments(oldMedia.segments, newMedia.segments, newMedia.mediaSequence - oldMedia.mediaSequence);\n } // resolve any segment URIs to prevent us from having to do it later\n\n\n mergedPlaylist.segments.forEach(function (segment) {\n resolveSegmentUris(segment, mergedPlaylist.resolvedUri);\n }); // TODO Right now in the playlists array there are two references to each playlist, one\n // that is referenced by index, and one by URI. The index reference may no longer be\n // necessary.\n\n for (var _i = 0; _i < result.playlists.length; _i++) {\n if (result.playlists[_i].id === newMedia.id) {\n result.playlists[_i] = mergedPlaylist;\n }\n }\n\n result.playlists[newMedia.id] = mergedPlaylist; // URI reference added for backwards compatibility\n\n result.playlists[newMedia.uri] = mergedPlaylist; // update media group playlist references.\n\n forEachMediaGroup(master, function (properties, mediaType, groupKey, labelKey) {\n if (!properties.playlists) {\n return;\n }\n\n for (var _i2 = 0; _i2 < properties.playlists.length; _i2++) {\n if (newMedia.id === properties.playlists[_i2].id) {\n properties.playlists[_i2] = mergedPlaylist;\n }\n }\n });\n return result;\n};\n/**\n * Calculates the time to wait before refreshing a live playlist\n *\n * @param {Object} media\n * The current media\n * @param {boolean} update\n * True if there were any updates from the last refresh, false otherwise\n * @return {number}\n * The time in ms to wait before refreshing the live playlist\n */\n\n\nvar refreshDelay = function refreshDelay(media, update) {\n var segments = media.segments || [];\n var lastSegment = segments[segments.length - 1];\n var lastPart = lastSegment && lastSegment.parts && lastSegment.parts[lastSegment.parts.length - 1];\n var lastDuration = lastPart && lastPart.duration || lastSegment && lastSegment.duration;\n\n if (update && lastDuration) {\n return lastDuration * 1000;\n } // if the playlist is unchanged since the last reload or last segment duration\n // cannot be determined, try again after half the target duration\n\n\n return (media.partTargetDuration || media.targetDuration || 10) * 500;\n};\n/**\n * Load a playlist from a remote location\n *\n * @class PlaylistLoader\n * @extends Stream\n * @param {string|Object} src url or object of manifest\n * @param {boolean} withCredentials the withCredentials xhr option\n * @class\n */\n\n\nvar PlaylistLoader = /*#__PURE__*/function (_EventTarget) {\n _inheritsLoose(PlaylistLoader, _EventTarget);\n\n function PlaylistLoader(src, vhs, options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _EventTarget.call(this) || this;\n\n if (!src) {\n throw new Error('A non-empty playlist URL or object is required');\n }\n\n _this.logger_ = logger('PlaylistLoader');\n var _options = options,\n _options$withCredenti = _options.withCredentials,\n withCredentials = _options$withCredenti === void 0 ? false : _options$withCredenti,\n _options$handleManife = _options.handleManifestRedirects,\n handleManifestRedirects = _options$handleManife === void 0 ? false : _options$handleManife;\n _this.src = src;\n _this.vhs_ = vhs;\n _this.withCredentials = withCredentials;\n _this.handleManifestRedirects = handleManifestRedirects;\n var vhsOptions = vhs.options_;\n _this.customTagParsers = vhsOptions && vhsOptions.customTagParsers || [];\n _this.customTagMappers = vhsOptions && vhsOptions.customTagMappers || [];\n _this.experimentalLLHLS = vhsOptions && vhsOptions.experimentalLLHLS || false; // force experimentalLLHLS for IE 11\n\n if (videojs.browser.IE_VERSION) {\n _this.experimentalLLHLS = false;\n } // initialize the loader state\n\n\n _this.state = 'HAVE_NOTHING'; // live playlist staleness timeout\n\n _this.handleMediaupdatetimeout_ = _this.handleMediaupdatetimeout_.bind(_assertThisInitialized(_this));\n\n _this.on('mediaupdatetimeout', _this.handleMediaupdatetimeout_);\n\n return _this;\n }\n\n var _proto = PlaylistLoader.prototype;\n\n _proto.handleMediaupdatetimeout_ = function handleMediaupdatetimeout_() {\n var _this2 = this;\n\n if (this.state !== 'HAVE_METADATA') {\n // only refresh the media playlist if no other activity is going on\n return;\n }\n\n var media = this.media();\n var uri = resolveUrl(this.master.uri, media.uri);\n\n if (this.experimentalLLHLS) {\n uri = addLLHLSQueryDirectives(uri, media);\n }\n\n this.state = 'HAVE_CURRENT_METADATA';\n this.request = this.vhs_.xhr({\n uri: uri,\n withCredentials: this.withCredentials\n }, function (error, req) {\n // disposed\n if (!_this2.request) {\n return;\n }\n\n if (error) {\n return _this2.playlistRequestError(_this2.request, _this2.media(), 'HAVE_METADATA');\n }\n\n _this2.haveMetadata({\n playlistString: _this2.request.responseText,\n url: _this2.media().uri,\n id: _this2.media().id\n });\n });\n };\n\n _proto.playlistRequestError = function playlistRequestError(xhr, playlist, startingState) {\n var uri = playlist.uri,\n id = playlist.id; // any in-flight request is now finished\n\n this.request = null;\n\n if (startingState) {\n this.state = startingState;\n }\n\n this.error = {\n playlist: this.master.playlists[id],\n status: xhr.status,\n message: \"HLS playlist request error at URL: \" + uri + \".\",\n responseText: xhr.responseText,\n code: xhr.status >= 500 ? 4 : 2\n };\n this.trigger('error');\n };\n\n _proto.parseManifest_ = function parseManifest_(_ref) {\n var _this3 = this;\n\n var url = _ref.url,\n manifestString = _ref.manifestString;\n return parseManifest({\n onwarn: function onwarn(_ref2) {\n var message = _ref2.message;\n return _this3.logger_(\"m3u8-parser warn for \" + url + \": \" + message);\n },\n oninfo: function oninfo(_ref3) {\n var message = _ref3.message;\n return _this3.logger_(\"m3u8-parser info for \" + url + \": \" + message);\n },\n manifestString: manifestString,\n customTagParsers: this.customTagParsers,\n customTagMappers: this.customTagMappers,\n experimentalLLHLS: this.experimentalLLHLS\n });\n }\n /**\n * Update the playlist loader's state in response to a new or updated playlist.\n *\n * @param {string} [playlistString]\n * Playlist string (if playlistObject is not provided)\n * @param {Object} [playlistObject]\n * Playlist object (if playlistString is not provided)\n * @param {string} url\n * URL of playlist\n * @param {string} id\n * ID to use for playlist\n */\n ;\n\n _proto.haveMetadata = function haveMetadata(_ref4) {\n var playlistString = _ref4.playlistString,\n playlistObject = _ref4.playlistObject,\n url = _ref4.url,\n id = _ref4.id; // any in-flight request is now finished\n\n this.request = null;\n this.state = 'HAVE_METADATA';\n var playlist = playlistObject || this.parseManifest_({\n url: url,\n manifestString: playlistString\n });\n playlist.lastRequest = Date.now();\n setupMediaPlaylist({\n playlist: playlist,\n uri: url,\n id: id\n }); // merge this playlist into the master\n\n var update = updateMaster$1(this.master, playlist);\n this.targetDuration = playlist.partTargetDuration || playlist.targetDuration;\n this.pendingMedia_ = null;\n\n if (update) {\n this.master = update;\n this.media_ = this.master.playlists[id];\n } else {\n this.trigger('playlistunchanged');\n }\n\n this.updateMediaUpdateTimeout_(refreshDelay(this.media(), !!update));\n this.trigger('loadedplaylist');\n }\n /**\n * Abort any outstanding work and clean up.\n */\n ;\n\n _proto.dispose = function dispose() {\n this.trigger('dispose');\n this.stopRequest();\n window$1.clearTimeout(this.mediaUpdateTimeout);\n window$1.clearTimeout(this.finalRenditionTimeout);\n this.off();\n };\n\n _proto.stopRequest = function stopRequest() {\n if (this.request) {\n var oldRequest = this.request;\n this.request = null;\n oldRequest.onreadystatechange = null;\n oldRequest.abort();\n }\n }\n /**\n * When called without any arguments, returns the currently\n * active media playlist. When called with a single argument,\n * triggers the playlist loader to asynchronously switch to the\n * specified media playlist. Calling this method while the\n * loader is in the HAVE_NOTHING causes an error to be emitted\n * but otherwise has no effect.\n *\n * @param {Object=} playlist the parsed media playlist\n * object to switch to\n * @param {boolean=} shouldDelay whether we should delay the request by half target duration\n *\n * @return {Playlist} the current loaded media\n */\n ;\n\n _proto.media = function media(playlist, shouldDelay) {\n var _this4 = this; // getter\n\n\n if (!playlist) {\n return this.media_;\n } // setter\n\n\n if (this.state === 'HAVE_NOTHING') {\n throw new Error('Cannot switch media playlist from ' + this.state);\n } // find the playlist object if the target playlist has been\n // specified by URI\n\n\n if (typeof playlist === 'string') {\n if (!this.master.playlists[playlist]) {\n throw new Error('Unknown playlist URI: ' + playlist);\n }\n\n playlist = this.master.playlists[playlist];\n }\n\n window$1.clearTimeout(this.finalRenditionTimeout);\n\n if (shouldDelay) {\n var delay = (playlist.partTargetDuration || playlist.targetDuration) / 2 * 1000 || 5 * 1000;\n this.finalRenditionTimeout = window$1.setTimeout(this.media.bind(this, playlist, false), delay);\n return;\n }\n\n var startingState = this.state;\n var mediaChange = !this.media_ || playlist.id !== this.media_.id;\n var masterPlaylistRef = this.master.playlists[playlist.id]; // switch to fully loaded playlists immediately\n\n if (masterPlaylistRef && masterPlaylistRef.endList || // handle the case of a playlist object (e.g., if using vhs-json with a resolved\n // media playlist or, for the case of demuxed audio, a resolved audio media group)\n playlist.endList && playlist.segments.length) {\n // abort outstanding playlist requests\n if (this.request) {\n this.request.onreadystatechange = null;\n this.request.abort();\n this.request = null;\n }\n\n this.state = 'HAVE_METADATA';\n this.media_ = playlist; // trigger media change if the active media has been updated\n\n if (mediaChange) {\n this.trigger('mediachanging');\n\n if (startingState === 'HAVE_MASTER') {\n // The initial playlist was a master manifest, and the first media selected was\n // also provided (in the form of a resolved playlist object) as part of the\n // source object (rather than just a URL). Therefore, since the media playlist\n // doesn't need to be requested, loadedmetadata won't trigger as part of the\n // normal flow, and needs an explicit trigger here.\n this.trigger('loadedmetadata');\n } else {\n this.trigger('mediachange');\n }\n }\n\n return;\n } // We update/set the timeout here so that live playlists\n // that are not a media change will \"start\" the loader as expected.\n // We expect that this function will start the media update timeout\n // cycle again. This also prevents a playlist switch failure from\n // causing us to stall during live.\n\n\n this.updateMediaUpdateTimeout_(refreshDelay(playlist, true)); // switching to the active playlist is a no-op\n\n if (!mediaChange) {\n return;\n }\n\n this.state = 'SWITCHING_MEDIA'; // there is already an outstanding playlist request\n\n if (this.request) {\n if (playlist.resolvedUri === this.request.url) {\n // requesting to switch to the same playlist multiple times\n // has no effect after the first\n return;\n }\n\n this.request.onreadystatechange = null;\n this.request.abort();\n this.request = null;\n } // request the new playlist\n\n\n if (this.media_) {\n this.trigger('mediachanging');\n }\n\n this.pendingMedia_ = playlist;\n this.request = this.vhs_.xhr({\n uri: playlist.resolvedUri,\n withCredentials: this.withCredentials\n }, function (error, req) {\n // disposed\n if (!_this4.request) {\n return;\n }\n\n playlist.lastRequest = Date.now();\n playlist.resolvedUri = resolveManifestRedirect(_this4.handleManifestRedirects, playlist.resolvedUri, req);\n\n if (error) {\n return _this4.playlistRequestError(_this4.request, playlist, startingState);\n }\n\n _this4.haveMetadata({\n playlistString: req.responseText,\n url: playlist.uri,\n id: playlist.id\n }); // fire loadedmetadata the first time a media playlist is loaded\n\n\n if (startingState === 'HAVE_MASTER') {\n _this4.trigger('loadedmetadata');\n } else {\n _this4.trigger('mediachange');\n }\n });\n }\n /**\n * pause loading of the playlist\n */\n ;\n\n _proto.pause = function pause() {\n if (this.mediaUpdateTimeout) {\n window$1.clearTimeout(this.mediaUpdateTimeout);\n this.mediaUpdateTimeout = null;\n }\n\n this.stopRequest();\n\n if (this.state === 'HAVE_NOTHING') {\n // If we pause the loader before any data has been retrieved, its as if we never\n // started, so reset to an unstarted state.\n this.started = false;\n } // Need to restore state now that no activity is happening\n\n\n if (this.state === 'SWITCHING_MEDIA') {\n // if the loader was in the process of switching media, it should either return to\n // HAVE_MASTER or HAVE_METADATA depending on if the loader has loaded a media\n // playlist yet. This is determined by the existence of loader.media_\n if (this.media_) {\n this.state = 'HAVE_METADATA';\n } else {\n this.state = 'HAVE_MASTER';\n }\n } else if (this.state === 'HAVE_CURRENT_METADATA') {\n this.state = 'HAVE_METADATA';\n }\n }\n /**\n * start loading of the playlist\n */\n ;\n\n _proto.load = function load(shouldDelay) {\n var _this5 = this;\n\n if (this.mediaUpdateTimeout) {\n window$1.clearTimeout(this.mediaUpdateTimeout);\n this.mediaUpdateTimeout = null;\n }\n\n var media = this.media();\n\n if (shouldDelay) {\n var delay = media ? (media.partTargetDuration || media.targetDuration) / 2 * 1000 : 5 * 1000;\n this.mediaUpdateTimeout = window$1.setTimeout(function () {\n _this5.mediaUpdateTimeout = null;\n\n _this5.load();\n }, delay);\n return;\n }\n\n if (!this.started) {\n this.start();\n return;\n }\n\n if (media && !media.endList) {\n this.trigger('mediaupdatetimeout');\n } else {\n this.trigger('loadedplaylist');\n }\n };\n\n _proto.updateMediaUpdateTimeout_ = function updateMediaUpdateTimeout_(delay) {\n var _this6 = this;\n\n if (this.mediaUpdateTimeout) {\n window$1.clearTimeout(this.mediaUpdateTimeout);\n this.mediaUpdateTimeout = null;\n } // we only have use mediaupdatetimeout for live playlists.\n\n\n if (!this.media() || this.media().endList) {\n return;\n }\n\n this.mediaUpdateTimeout = window$1.setTimeout(function () {\n _this6.mediaUpdateTimeout = null;\n\n _this6.trigger('mediaupdatetimeout');\n\n _this6.updateMediaUpdateTimeout_(delay);\n }, delay);\n }\n /**\n * start loading of the playlist\n */\n ;\n\n _proto.start = function start() {\n var _this7 = this;\n\n this.started = true;\n\n if (typeof this.src === 'object') {\n // in the case of an entirely constructed manifest object (meaning there's no actual\n // manifest on a server), default the uri to the page's href\n if (!this.src.uri) {\n this.src.uri = window$1.location.href;\n } // resolvedUri is added on internally after the initial request. Since there's no\n // request for pre-resolved manifests, add on resolvedUri here.\n\n\n this.src.resolvedUri = this.src.uri; // Since a manifest object was passed in as the source (instead of a URL), the first\n // request can be skipped (since the top level of the manifest, at a minimum, is\n // already available as a parsed manifest object). However, if the manifest object\n // represents a master playlist, some media playlists may need to be resolved before\n // the starting segment list is available. Therefore, go directly to setup of the\n // initial playlist, and let the normal flow continue from there.\n //\n // Note that the call to setup is asynchronous, as other sections of VHS may assume\n // that the first request is asynchronous.\n\n setTimeout(function () {\n _this7.setupInitialPlaylist(_this7.src);\n }, 0);\n return;\n } // request the specified URL\n\n\n this.request = this.vhs_.xhr({\n uri: this.src,\n withCredentials: this.withCredentials\n }, function (error, req) {\n // disposed\n if (!_this7.request) {\n return;\n } // clear the loader's request reference\n\n\n _this7.request = null;\n\n if (error) {\n _this7.error = {\n status: req.status,\n message: \"HLS playlist request error at URL: \" + _this7.src + \".\",\n responseText: req.responseText,\n // MEDIA_ERR_NETWORK\n code: 2\n };\n\n if (_this7.state === 'HAVE_NOTHING') {\n _this7.started = false;\n }\n\n return _this7.trigger('error');\n }\n\n _this7.src = resolveManifestRedirect(_this7.handleManifestRedirects, _this7.src, req);\n\n var manifest = _this7.parseManifest_({\n manifestString: req.responseText,\n url: _this7.src\n });\n\n _this7.setupInitialPlaylist(manifest);\n });\n };\n\n _proto.srcUri = function srcUri() {\n return typeof this.src === 'string' ? this.src : this.src.uri;\n }\n /**\n * Given a manifest object that's either a master or media playlist, trigger the proper\n * events and set the state of the playlist loader.\n *\n * If the manifest object represents a master playlist, `loadedplaylist` will be\n * triggered to allow listeners to select a playlist. If none is selected, the loader\n * will default to the first one in the playlists array.\n *\n * If the manifest object represents a media playlist, `loadedplaylist` will be\n * triggered followed by `loadedmetadata`, as the only available playlist is loaded.\n *\n * In the case of a media playlist, a master playlist object wrapper with one playlist\n * will be created so that all logic can handle playlists in the same fashion (as an\n * assumed manifest object schema).\n *\n * @param {Object} manifest\n * The parsed manifest object\n */\n ;\n\n _proto.setupInitialPlaylist = function setupInitialPlaylist(manifest) {\n this.state = 'HAVE_MASTER';\n\n if (manifest.playlists) {\n this.master = manifest;\n addPropertiesToMaster(this.master, this.srcUri()); // If the initial master playlist has playlists wtih segments already resolved,\n // then resolve URIs in advance, as they are usually done after a playlist request,\n // which may not happen if the playlist is resolved.\n\n manifest.playlists.forEach(function (playlist) {\n playlist.segments = getAllSegments(playlist);\n playlist.segments.forEach(function (segment) {\n resolveSegmentUris(segment, playlist.resolvedUri);\n });\n });\n this.trigger('loadedplaylist');\n\n if (!this.request) {\n // no media playlist was specifically selected so start\n // from the first listed one\n this.media(this.master.playlists[0]);\n }\n\n return;\n } // In order to support media playlists passed in as vhs-json, the case where the uri\n // is not provided as part of the manifest should be considered, and an appropriate\n // default used.\n\n\n var uri = this.srcUri() || window$1.location.href;\n this.master = masterForMedia(manifest, uri);\n this.haveMetadata({\n playlistObject: manifest,\n url: uri,\n id: this.master.playlists[0].id\n });\n this.trigger('loadedmetadata');\n };\n\n return PlaylistLoader;\n}(EventTarget$1);\n/**\n * @file xhr.js\n */\n\n\nvar videojsXHR = videojs.xhr,\n mergeOptions$1 = videojs.mergeOptions;\n\nvar callbackWrapper = function callbackWrapper(request, error, response, callback) {\n var reqResponse = request.responseType === 'arraybuffer' ? request.response : request.responseText;\n\n if (!error && reqResponse) {\n request.responseTime = Date.now();\n request.roundTripTime = request.responseTime - request.requestTime;\n request.bytesReceived = reqResponse.byteLength || reqResponse.length;\n\n if (!request.bandwidth) {\n request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000);\n }\n }\n\n if (response.headers) {\n request.responseHeaders = response.headers;\n } // videojs.xhr now uses a specific code on the error\n // object to signal that a request has timed out instead\n // of setting a boolean on the request object\n\n\n if (error && error.code === 'ETIMEDOUT') {\n request.timedout = true;\n } // videojs.xhr no longer considers status codes outside of 200 and 0\n // (for file uris) to be errors, but the old XHR did, so emulate that\n // behavior. Status 206 may be used in response to byterange requests.\n\n\n if (!error && !request.aborted && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) {\n error = new Error('XHR Failed with a response of: ' + (request && (reqResponse || request.responseText)));\n }\n\n callback(error, request);\n};\n\nvar xhrFactory = function xhrFactory() {\n var xhr = function XhrFunction(options, callback) {\n // Add a default timeout\n options = mergeOptions$1({\n timeout: 45e3\n }, options); // Allow an optional user-specified function to modify the option\n // object before we construct the xhr request\n\n var beforeRequest = XhrFunction.beforeRequest || videojs.Vhs.xhr.beforeRequest;\n\n if (beforeRequest && typeof beforeRequest === 'function') {\n var newOptions = beforeRequest(options);\n\n if (newOptions) {\n options = newOptions;\n }\n } // Use the standard videojs.xhr() method unless `videojs.Vhs.xhr` has been overriden\n // TODO: switch back to videojs.Vhs.xhr.name === 'XhrFunction' when we drop IE11\n\n\n var xhrMethod = videojs.Vhs.xhr.original === true ? videojsXHR : videojs.Vhs.xhr;\n var request = xhrMethod(options, function (error, response) {\n return callbackWrapper(request, error, response, callback);\n });\n var originalAbort = request.abort;\n\n request.abort = function () {\n request.aborted = true;\n return originalAbort.apply(request, arguments);\n };\n\n request.uri = options.uri;\n request.requestTime = Date.now();\n return request;\n };\n\n xhr.original = true;\n return xhr;\n};\n/**\n * Turns segment byterange into a string suitable for use in\n * HTTP Range requests\n *\n * @param {Object} byterange - an object with two values defining the start and end\n * of a byte-range\n */\n\n\nvar byterangeStr = function byterangeStr(byterange) {\n // `byterangeEnd` is one less than `offset + length` because the HTTP range\n // header uses inclusive ranges\n var byterangeEnd;\n var byterangeStart = byterange.offset;\n\n if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {\n byterangeEnd = window$1.BigInt(byterange.offset) + window$1.BigInt(byterange.length) - window$1.BigInt(1);\n } else {\n byterangeEnd = byterange.offset + byterange.length - 1;\n }\n\n return 'bytes=' + byterangeStart + '-' + byterangeEnd;\n};\n/**\n * Defines headers for use in the xhr request for a particular segment.\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n */\n\n\nvar segmentXhrHeaders = function segmentXhrHeaders(segment) {\n var headers = {};\n\n if (segment.byterange) {\n headers.Range = byterangeStr(segment.byterange);\n }\n\n return headers;\n};\n/**\n * @file bin-utils.js\n */\n\n/**\n * convert a TimeRange to text\n *\n * @param {TimeRange} range the timerange to use for conversion\n * @param {number} i the iterator on the range to convert\n * @return {string} the range in string format\n */\n\n\nvar textRange = function textRange(range, i) {\n return range.start(i) + '-' + range.end(i);\n};\n/**\n * format a number as hex string\n *\n * @param {number} e The number\n * @param {number} i the iterator\n * @return {string} the hex formatted number as a string\n */\n\n\nvar formatHexString = function formatHexString(e, i) {\n var value = e.toString(16);\n return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : '');\n};\n\nvar formatAsciiString = function formatAsciiString(e) {\n if (e >= 0x20 && e < 0x7e) {\n return String.fromCharCode(e);\n }\n\n return '.';\n};\n/**\n * Creates an object for sending to a web worker modifying properties that are TypedArrays\n * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n *\n * @param {Object} message\n * Object of properties and values to send to the web worker\n * @return {Object}\n * Modified message with TypedArray values expanded\n * @function createTransferableMessage\n */\n\n\nvar createTransferableMessage = function createTransferableMessage(message) {\n var transferable = {};\n Object.keys(message).forEach(function (key) {\n var value = message[key];\n\n if (isArrayBufferView(value)) {\n transferable[key] = {\n bytes: value.buffer,\n byteOffset: value.byteOffset,\n byteLength: value.byteLength\n };\n } else {\n transferable[key] = value;\n }\n });\n return transferable;\n};\n/**\n * Returns a unique string identifier for a media initialization\n * segment.\n *\n * @param {Object} initSegment\n * the init segment object.\n *\n * @return {string} the generated init segment id\n */\n\n\nvar initSegmentId = function initSegmentId(initSegment) {\n var byterange = initSegment.byterange || {\n length: Infinity,\n offset: 0\n };\n return [byterange.length, byterange.offset, initSegment.resolvedUri].join(',');\n};\n/**\n * Returns a unique string identifier for a media segment key.\n *\n * @param {Object} key the encryption key\n * @return {string} the unique id for the media segment key.\n */\n\n\nvar segmentKeyId = function segmentKeyId(key) {\n return key.resolvedUri;\n};\n/**\n * utils to help dump binary data to the console\n *\n * @param {Array|TypedArray} data\n * data to dump to a string\n *\n * @return {string} the data as a hex string.\n */\n\n\nvar hexDump = function hexDump(data) {\n var bytes = Array.prototype.slice.call(data);\n var step = 16;\n var result = '';\n var hex;\n var ascii;\n\n for (var j = 0; j < bytes.length / step; j++) {\n hex = bytes.slice(j * step, j * step + step).map(formatHexString).join('');\n ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join('');\n result += hex + ' ' + ascii + '\\n';\n }\n\n return result;\n};\n\nvar tagDump = function tagDump(_ref) {\n var bytes = _ref.bytes;\n return hexDump(bytes);\n};\n\nvar textRanges = function textRanges(ranges) {\n var result = '';\n var i;\n\n for (i = 0; i < ranges.length; i++) {\n result += textRange(ranges, i) + ' ';\n }\n\n return result;\n};\n\nvar utils = /*#__PURE__*/Object.freeze({\n __proto__: null,\n createTransferableMessage: createTransferableMessage,\n initSegmentId: initSegmentId,\n segmentKeyId: segmentKeyId,\n hexDump: hexDump,\n tagDump: tagDump,\n textRanges: textRanges\n}); // TODO handle fmp4 case where the timing info is accurate and doesn't involve transmux\n// 25% was arbitrarily chosen, and may need to be refined over time.\n\nvar SEGMENT_END_FUDGE_PERCENT = 0.25;\n/**\n * Converts a player time (any time that can be gotten/set from player.currentTime(),\n * e.g., any time within player.seekable().start(0) to player.seekable().end(0)) to a\n * program time (any time referencing the real world (e.g., EXT-X-PROGRAM-DATE-TIME)).\n *\n * The containing segment is required as the EXT-X-PROGRAM-DATE-TIME serves as an \"anchor\n * point\" (a point where we have a mapping from program time to player time, with player\n * time being the post transmux start of the segment).\n *\n * For more details, see [this doc](../../docs/program-time-from-player-time.md).\n *\n * @param {number} playerTime the player time\n * @param {Object} segment the segment which contains the player time\n * @return {Date} program time\n */\n\nvar playerTimeToProgramTime = function playerTimeToProgramTime(playerTime, segment) {\n if (!segment.dateTimeObject) {\n // Can't convert without an \"anchor point\" for the program time (i.e., a time that can\n // be used to map the start of a segment with a real world time).\n return null;\n }\n\n var transmuxerPrependedSeconds = segment.videoTimingInfo.transmuxerPrependedSeconds;\n var transmuxedStart = segment.videoTimingInfo.transmuxedPresentationStart; // get the start of the content from before old content is prepended\n\n var startOfSegment = transmuxedStart + transmuxerPrependedSeconds;\n var offsetFromSegmentStart = playerTime - startOfSegment;\n return new Date(segment.dateTimeObject.getTime() + offsetFromSegmentStart * 1000);\n};\n\nvar originalSegmentVideoDuration = function originalSegmentVideoDuration(videoTimingInfo) {\n return videoTimingInfo.transmuxedPresentationEnd - videoTimingInfo.transmuxedPresentationStart - videoTimingInfo.transmuxerPrependedSeconds;\n};\n/**\n * Finds a segment that contains the time requested given as an ISO-8601 string. The\n * returned segment might be an estimate or an accurate match.\n *\n * @param {string} programTime The ISO-8601 programTime to find a match for\n * @param {Object} playlist A playlist object to search within\n */\n\n\nvar findSegmentForProgramTime = function findSegmentForProgramTime(programTime, playlist) {\n // Assumptions:\n // - verifyProgramDateTimeTags has already been run\n // - live streams have been started\n var dateTimeObject;\n\n try {\n dateTimeObject = new Date(programTime);\n } catch (e) {\n return null;\n }\n\n if (!playlist || !playlist.segments || playlist.segments.length === 0) {\n return null;\n }\n\n var segment = playlist.segments[0];\n\n if (dateTimeObject < segment.dateTimeObject) {\n // Requested time is before stream start.\n return null;\n }\n\n for (var i = 0; i < playlist.segments.length - 1; i++) {\n segment = playlist.segments[i];\n var nextSegmentStart = playlist.segments[i + 1].dateTimeObject;\n\n if (dateTimeObject < nextSegmentStart) {\n break;\n }\n }\n\n var lastSegment = playlist.segments[playlist.segments.length - 1];\n var lastSegmentStart = lastSegment.dateTimeObject;\n var lastSegmentDuration = lastSegment.videoTimingInfo ? originalSegmentVideoDuration(lastSegment.videoTimingInfo) : lastSegment.duration + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT;\n var lastSegmentEnd = new Date(lastSegmentStart.getTime() + lastSegmentDuration * 1000);\n\n if (dateTimeObject > lastSegmentEnd) {\n // Beyond the end of the stream, or our best guess of the end of the stream.\n return null;\n }\n\n if (dateTimeObject > lastSegmentStart) {\n segment = lastSegment;\n }\n\n return {\n segment: segment,\n estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : Playlist.duration(playlist, playlist.mediaSequence + playlist.segments.indexOf(segment)),\n // Although, given that all segments have accurate date time objects, the segment\n // selected should be accurate, unless the video has been transmuxed at some point\n // (determined by the presence of the videoTimingInfo object), the segment's \"player\n // time\" (the start time in the player) can't be considered accurate.\n type: segment.videoTimingInfo ? 'accurate' : 'estimate'\n };\n};\n/**\n * Finds a segment that contains the given player time(in seconds).\n *\n * @param {number} time The player time to find a match for\n * @param {Object} playlist A playlist object to search within\n */\n\n\nvar findSegmentForPlayerTime = function findSegmentForPlayerTime(time, playlist) {\n // Assumptions:\n // - there will always be a segment.duration\n // - we can start from zero\n // - segments are in time order\n if (!playlist || !playlist.segments || playlist.segments.length === 0) {\n return null;\n }\n\n var segmentEnd = 0;\n var segment;\n\n for (var i = 0; i < playlist.segments.length; i++) {\n segment = playlist.segments[i]; // videoTimingInfo is set after the segment is downloaded and transmuxed, and\n // should contain the most accurate values we have for the segment's player times.\n //\n // Use the accurate transmuxedPresentationEnd value if it is available, otherwise fall\n // back to an estimate based on the manifest derived (inaccurate) segment.duration, to\n // calculate an end value.\n\n segmentEnd = segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationEnd : segmentEnd + segment.duration;\n\n if (time <= segmentEnd) {\n break;\n }\n }\n\n var lastSegment = playlist.segments[playlist.segments.length - 1];\n\n if (lastSegment.videoTimingInfo && lastSegment.videoTimingInfo.transmuxedPresentationEnd < time) {\n // The time requested is beyond the stream end.\n return null;\n }\n\n if (time > segmentEnd) {\n // The time is within or beyond the last segment.\n //\n // Check to see if the time is beyond a reasonable guess of the end of the stream.\n if (time > segmentEnd + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT) {\n // Technically, because the duration value is only an estimate, the time may still\n // exist in the last segment, however, there isn't enough information to make even\n // a reasonable estimate.\n return null;\n }\n\n segment = lastSegment;\n }\n\n return {\n segment: segment,\n estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : segmentEnd - segment.duration,\n // Because videoTimingInfo is only set after transmux, it is the only way to get\n // accurate timing values.\n type: segment.videoTimingInfo ? 'accurate' : 'estimate'\n };\n};\n/**\n * Gives the offset of the comparisonTimestamp from the programTime timestamp in seconds.\n * If the offset returned is positive, the programTime occurs after the\n * comparisonTimestamp.\n * If the offset is negative, the programTime occurs before the comparisonTimestamp.\n *\n * @param {string} comparisonTimeStamp An ISO-8601 timestamp to compare against\n * @param {string} programTime The programTime as an ISO-8601 string\n * @return {number} offset\n */\n\n\nvar getOffsetFromTimestamp = function getOffsetFromTimestamp(comparisonTimeStamp, programTime) {\n var segmentDateTime;\n var programDateTime;\n\n try {\n segmentDateTime = new Date(comparisonTimeStamp);\n programDateTime = new Date(programTime);\n } catch (e) {// TODO handle error\n }\n\n var segmentTimeEpoch = segmentDateTime.getTime();\n var programTimeEpoch = programDateTime.getTime();\n return (programTimeEpoch - segmentTimeEpoch) / 1000;\n};\n/**\n * Checks that all segments in this playlist have programDateTime tags.\n *\n * @param {Object} playlist A playlist object\n */\n\n\nvar verifyProgramDateTimeTags = function verifyProgramDateTimeTags(playlist) {\n if (!playlist.segments || playlist.segments.length === 0) {\n return false;\n }\n\n for (var i = 0; i < playlist.segments.length; i++) {\n var segment = playlist.segments[i];\n\n if (!segment.dateTimeObject) {\n return false;\n }\n }\n\n return true;\n};\n/**\n * Returns the programTime of the media given a playlist and a playerTime.\n * The playlist must have programDateTime tags for a programDateTime tag to be returned.\n * If the segments containing the time requested have not been buffered yet, an estimate\n * may be returned to the callback.\n *\n * @param {Object} args\n * @param {Object} args.playlist A playlist object to search within\n * @param {number} time A playerTime in seconds\n * @param {Function} callback(err, programTime)\n * @return {string} err.message A detailed error message\n * @return {Object} programTime\n * @return {number} programTime.mediaSeconds The streamTime in seconds\n * @return {string} programTime.programDateTime The programTime as an ISO-8601 String\n */\n\n\nvar getProgramTime = function getProgramTime(_ref) {\n var playlist = _ref.playlist,\n _ref$time = _ref.time,\n time = _ref$time === void 0 ? undefined : _ref$time,\n callback = _ref.callback;\n\n if (!callback) {\n throw new Error('getProgramTime: callback must be provided');\n }\n\n if (!playlist || time === undefined) {\n return callback({\n message: 'getProgramTime: playlist and time must be provided'\n });\n }\n\n var matchedSegment = findSegmentForPlayerTime(time, playlist);\n\n if (!matchedSegment) {\n return callback({\n message: 'valid programTime was not found'\n });\n }\n\n if (matchedSegment.type === 'estimate') {\n return callback({\n message: 'Accurate programTime could not be determined.' + ' Please seek to e.seekTime and try again',\n seekTime: matchedSegment.estimatedStart\n });\n }\n\n var programTimeObject = {\n mediaSeconds: time\n };\n var programTime = playerTimeToProgramTime(time, matchedSegment.segment);\n\n if (programTime) {\n programTimeObject.programDateTime = programTime.toISOString();\n }\n\n return callback(null, programTimeObject);\n};\n/**\n * Seeks in the player to a time that matches the given programTime ISO-8601 string.\n *\n * @param {Object} args\n * @param {string} args.programTime A programTime to seek to as an ISO-8601 String\n * @param {Object} args.playlist A playlist to look within\n * @param {number} args.retryCount The number of times to try for an accurate seek. Default is 2.\n * @param {Function} args.seekTo A method to perform a seek\n * @param {boolean} args.pauseAfterSeek Whether to end in a paused state after seeking. Default is true.\n * @param {Object} args.tech The tech to seek on\n * @param {Function} args.callback(err, newTime) A callback to return the new time to\n * @return {string} err.message A detailed error message\n * @return {number} newTime The exact time that was seeked to in seconds\n */\n\n\nvar seekToProgramTime = function seekToProgramTime(_ref2) {\n var programTime = _ref2.programTime,\n playlist = _ref2.playlist,\n _ref2$retryCount = _ref2.retryCount,\n retryCount = _ref2$retryCount === void 0 ? 2 : _ref2$retryCount,\n seekTo = _ref2.seekTo,\n _ref2$pauseAfterSeek = _ref2.pauseAfterSeek,\n pauseAfterSeek = _ref2$pauseAfterSeek === void 0 ? true : _ref2$pauseAfterSeek,\n tech = _ref2.tech,\n callback = _ref2.callback;\n\n if (!callback) {\n throw new Error('seekToProgramTime: callback must be provided');\n }\n\n if (typeof programTime === 'undefined' || !playlist || !seekTo) {\n return callback({\n message: 'seekToProgramTime: programTime, seekTo and playlist must be provided'\n });\n }\n\n if (!playlist.endList && !tech.hasStarted_) {\n return callback({\n message: 'player must be playing a live stream to start buffering'\n });\n }\n\n if (!verifyProgramDateTimeTags(playlist)) {\n return callback({\n message: 'programDateTime tags must be provided in the manifest ' + playlist.resolvedUri\n });\n }\n\n var matchedSegment = findSegmentForProgramTime(programTime, playlist); // no match\n\n if (!matchedSegment) {\n return callback({\n message: programTime + \" was not found in the stream\"\n });\n }\n\n var segment = matchedSegment.segment;\n var mediaOffset = getOffsetFromTimestamp(segment.dateTimeObject, programTime);\n\n if (matchedSegment.type === 'estimate') {\n // we've run out of retries\n if (retryCount === 0) {\n return callback({\n message: programTime + \" is not buffered yet. Try again\"\n });\n }\n\n seekTo(matchedSegment.estimatedStart + mediaOffset);\n tech.one('seeked', function () {\n seekToProgramTime({\n programTime: programTime,\n playlist: playlist,\n retryCount: retryCount - 1,\n seekTo: seekTo,\n pauseAfterSeek: pauseAfterSeek,\n tech: tech,\n callback: callback\n });\n });\n return;\n } // Since the segment.start value is determined from the buffered end or ending time\n // of the prior segment, the seekToTime doesn't need to account for any transmuxer\n // modifications.\n\n\n var seekToTime = segment.start + mediaOffset;\n\n var seekedCallback = function seekedCallback() {\n return callback(null, tech.currentTime());\n }; // listen for seeked event\n\n\n tech.one('seeked', seekedCallback); // pause before seeking as video.js will restore this state\n\n if (pauseAfterSeek) {\n tech.pause();\n }\n\n seekTo(seekToTime);\n}; // which will only happen if the request is complete.\n\n\nvar callbackOnCompleted = function callbackOnCompleted(request, cb) {\n if (request.readyState === 4) {\n return cb();\n }\n\n return;\n};\n\nvar containerRequest = function containerRequest(uri, xhr, cb) {\n var bytes = [];\n var id3Offset;\n var finished = false;\n\n var endRequestAndCallback = function endRequestAndCallback(err, req, type, _bytes) {\n req.abort();\n finished = true;\n return cb(err, req, type, _bytes);\n };\n\n var progressListener = function progressListener(error, request) {\n if (finished) {\n return;\n }\n\n if (error) {\n return endRequestAndCallback(error, request, '', bytes);\n } // grap the new part of content that was just downloaded\n\n\n var newPart = request.responseText.substring(bytes && bytes.byteLength || 0, request.responseText.length); // add that onto bytes\n\n bytes = concatTypedArrays(bytes, stringToBytes(newPart, true));\n id3Offset = id3Offset || getId3Offset(bytes); // we need at least 10 bytes to determine a type\n // or we need at least two bytes after an id3Offset\n\n if (bytes.length < 10 || id3Offset && bytes.length < id3Offset + 2) {\n return callbackOnCompleted(request, function () {\n return endRequestAndCallback(error, request, '', bytes);\n });\n }\n\n var type = detectContainerForBytes(bytes); // if this looks like a ts segment but we don't have enough data\n // to see the second sync byte, wait until we have enough data\n // before declaring it ts\n\n if (type === 'ts' && bytes.length < 188) {\n return callbackOnCompleted(request, function () {\n return endRequestAndCallback(error, request, '', bytes);\n });\n } // this may be an unsynced ts segment\n // wait for 376 bytes before detecting no container\n\n\n if (!type && bytes.length < 376) {\n return callbackOnCompleted(request, function () {\n return endRequestAndCallback(error, request, '', bytes);\n });\n }\n\n return endRequestAndCallback(null, request, type, bytes);\n };\n\n var options = {\n uri: uri,\n beforeSend: function beforeSend(request) {\n // this forces the browser to pass the bytes to us unprocessed\n request.overrideMimeType('text/plain; charset=x-user-defined');\n request.addEventListener('progress', function (_ref) {\n _ref.total;\n _ref.loaded;\n return callbackWrapper(request, null, {\n statusCode: request.status\n }, progressListener);\n });\n }\n };\n var request = xhr(options, function (error, response) {\n return callbackWrapper(request, error, response, progressListener);\n });\n return request;\n};\n\nvar EventTarget = videojs.EventTarget,\n mergeOptions = videojs.mergeOptions;\n\nvar dashPlaylistUnchanged = function dashPlaylistUnchanged(a, b) {\n if (!isPlaylistUnchanged(a, b)) {\n return false;\n } // for dash the above check will often return true in scenarios where\n // the playlist actually has changed because mediaSequence isn't a\n // dash thing, and we often set it to 1. So if the playlists have the same amount\n // of segments we return true.\n // So for dash we need to make sure that the underlying segments are different.\n // if sidx changed then the playlists are different.\n\n\n if (a.sidx && b.sidx && (a.sidx.offset !== b.sidx.offset || a.sidx.length !== b.sidx.length)) {\n return false;\n } else if (!a.sidx && b.sidx || a.sidx && !b.sidx) {\n return false;\n } // one or the other does not have segments\n // there was a change.\n\n\n if (a.segments && !b.segments || !a.segments && b.segments) {\n return false;\n } // neither has segments nothing changed\n\n\n if (!a.segments && !b.segments) {\n return true;\n } // check segments themselves\n\n\n for (var i = 0; i < a.segments.length; i++) {\n var aSegment = a.segments[i];\n var bSegment = b.segments[i]; // if uris are different between segments there was a change\n\n if (aSegment.uri !== bSegment.uri) {\n return false;\n } // neither segment has a byterange, there will be no byterange change.\n\n\n if (!aSegment.byterange && !bSegment.byterange) {\n continue;\n }\n\n var aByterange = aSegment.byterange;\n var bByterange = bSegment.byterange; // if byterange only exists on one of the segments, there was a change.\n\n if (aByterange && !bByterange || !aByterange && bByterange) {\n return false;\n } // if both segments have byterange with different offsets, there was a change.\n\n\n if (aByterange.offset !== bByterange.offset || aByterange.length !== bByterange.length) {\n return false;\n }\n } // if everything was the same with segments, this is the same playlist.\n\n\n return true;\n};\n/**\n * Use the representation IDs from the mpd object to create groupIDs, the NAME is set to mandatory representation\n * ID in the parser. This allows for continuous playout across periods with the same representation IDs\n * (continuous periods as defined in DASH-IF 3.2.12). This is assumed in the mpd-parser as well. If we want to support\n * periods without continuous playback this function may need modification as well as the parser.\n */\n\n\nvar dashGroupId = function dashGroupId(type, group, label, playlist) {\n // If the manifest somehow does not have an ID (non-dash compliant), use the label.\n var playlistId = playlist.attributes.NAME || label;\n return \"placeholder-uri-\" + type + \"-\" + group + \"-\" + playlistId;\n};\n/**\n * Parses the master XML string and updates playlist URI references.\n *\n * @param {Object} config\n * Object of arguments\n * @param {string} config.masterXml\n * The mpd XML\n * @param {string} config.srcUrl\n * The mpd URL\n * @param {Date} config.clientOffset\n * A time difference between server and client\n * @param {Object} config.sidxMapping\n * SIDX mappings for moof/mdat URIs and byte ranges\n * @return {Object}\n * The parsed mpd manifest object\n */\n\n\nvar parseMasterXml = function parseMasterXml(_ref) {\n var masterXml = _ref.masterXml,\n srcUrl = _ref.srcUrl,\n clientOffset = _ref.clientOffset,\n sidxMapping = _ref.sidxMapping,\n previousManifest = _ref.previousManifest;\n var manifest = parse(masterXml, {\n manifestUri: srcUrl,\n clientOffset: clientOffset,\n sidxMapping: sidxMapping,\n previousManifest: previousManifest\n });\n addPropertiesToMaster(manifest, srcUrl, dashGroupId);\n return manifest;\n};\n/**\n * Removes any mediaGroup labels that no longer exist in the newMaster\n *\n * @param {Object} update\n * The previous mpd object being updated\n * @param {Object} newMaster\n * The new mpd object\n */\n\n\nvar removeOldMediaGroupLabels = function removeOldMediaGroupLabels(update, newMaster) {\n forEachMediaGroup(update, function (properties, type, group, label) {\n if (!(label in newMaster.mediaGroups[type][group])) {\n delete update.mediaGroups[type][group][label];\n }\n });\n};\n/**\n * Returns a new master manifest that is the result of merging an updated master manifest\n * into the original version.\n *\n * @param {Object} oldMaster\n * The old parsed mpd object\n * @param {Object} newMaster\n * The updated parsed mpd object\n * @return {Object}\n * A new object representing the original master manifest with the updated media\n * playlists merged in\n */\n\n\nvar updateMaster = function updateMaster(oldMaster, newMaster, sidxMapping) {\n var noChanges = true;\n var update = mergeOptions(oldMaster, {\n // These are top level properties that can be updated\n duration: newMaster.duration,\n minimumUpdatePeriod: newMaster.minimumUpdatePeriod,\n timelineStarts: newMaster.timelineStarts\n }); // First update the playlists in playlist list\n\n for (var i = 0; i < newMaster.playlists.length; i++) {\n var playlist = newMaster.playlists[i];\n\n if (playlist.sidx) {\n var sidxKey = generateSidxKey(playlist.sidx); // add sidx segments to the playlist if we have all the sidx info already\n\n if (sidxMapping && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx) {\n addSidxSegmentsToPlaylist(playlist, sidxMapping[sidxKey].sidx, playlist.sidx.resolvedUri);\n }\n }\n\n var playlistUpdate = updateMaster$1(update, playlist, dashPlaylistUnchanged);\n\n if (playlistUpdate) {\n update = playlistUpdate;\n noChanges = false;\n }\n } // Then update media group playlists\n\n\n forEachMediaGroup(newMaster, function (properties, type, group, label) {\n if (properties.playlists && properties.playlists.length) {\n var id = properties.playlists[0].id;\n\n var _playlistUpdate = updateMaster$1(update, properties.playlists[0], dashPlaylistUnchanged);\n\n if (_playlistUpdate) {\n update = _playlistUpdate; // add new mediaGroup label if it doesn't exist and assign the new mediaGroup.\n\n if (!(label in update.mediaGroups[type][group])) {\n update.mediaGroups[type][group][label] = properties;\n } // update the playlist reference within media groups\n\n\n update.mediaGroups[type][group][label].playlists[0] = update.playlists[id];\n noChanges = false;\n }\n }\n }); // remove mediaGroup labels and references that no longer exist in the newMaster\n\n removeOldMediaGroupLabels(update, newMaster);\n\n if (newMaster.minimumUpdatePeriod !== oldMaster.minimumUpdatePeriod) {\n noChanges = false;\n }\n\n if (noChanges) {\n return null;\n }\n\n return update;\n}; // SIDX should be equivalent if the URI and byteranges of the SIDX match.\n// If the SIDXs have maps, the two maps should match,\n// both `a` and `b` missing SIDXs is considered matching.\n// If `a` or `b` but not both have a map, they aren't matching.\n\n\nvar equivalentSidx = function equivalentSidx(a, b) {\n var neitherMap = Boolean(!a.map && !b.map);\n var equivalentMap = neitherMap || Boolean(a.map && b.map && a.map.byterange.offset === b.map.byterange.offset && a.map.byterange.length === b.map.byterange.length);\n return equivalentMap && a.uri === b.uri && a.byterange.offset === b.byterange.offset && a.byterange.length === b.byterange.length;\n}; // exported for testing\n\n\nvar compareSidxEntry = function compareSidxEntry(playlists, oldSidxMapping) {\n var newSidxMapping = {};\n\n for (var id in playlists) {\n var playlist = playlists[id];\n var currentSidxInfo = playlist.sidx;\n\n if (currentSidxInfo) {\n var key = generateSidxKey(currentSidxInfo);\n\n if (!oldSidxMapping[key]) {\n break;\n }\n\n var savedSidxInfo = oldSidxMapping[key].sidxInfo;\n\n if (equivalentSidx(savedSidxInfo, currentSidxInfo)) {\n newSidxMapping[key] = oldSidxMapping[key];\n }\n }\n }\n\n return newSidxMapping;\n};\n/**\n * A function that filters out changed items as they need to be requested separately.\n *\n * The method is exported for testing\n *\n * @param {Object} master the parsed mpd XML returned via mpd-parser\n * @param {Object} oldSidxMapping the SIDX to compare against\n */\n\n\nvar filterChangedSidxMappings = function filterChangedSidxMappings(master, oldSidxMapping) {\n var videoSidx = compareSidxEntry(master.playlists, oldSidxMapping);\n var mediaGroupSidx = videoSidx;\n forEachMediaGroup(master, function (properties, mediaType, groupKey, labelKey) {\n if (properties.playlists && properties.playlists.length) {\n var playlists = properties.playlists;\n mediaGroupSidx = mergeOptions(mediaGroupSidx, compareSidxEntry(playlists, oldSidxMapping));\n }\n });\n return mediaGroupSidx;\n};\n\nvar DashPlaylistLoader = /*#__PURE__*/function (_EventTarget) {\n _inheritsLoose(DashPlaylistLoader, _EventTarget); // DashPlaylistLoader must accept either a src url or a playlist because subsequent\n // playlist loader setups from media groups will expect to be able to pass a playlist\n // (since there aren't external URLs to media playlists with DASH)\n\n\n function DashPlaylistLoader(srcUrlOrPlaylist, vhs, options, masterPlaylistLoader) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _EventTarget.call(this) || this;\n _this.masterPlaylistLoader_ = masterPlaylistLoader || _assertThisInitialized(_this);\n\n if (!masterPlaylistLoader) {\n _this.isMaster_ = true;\n }\n\n var _options = options,\n _options$withCredenti = _options.withCredentials,\n withCredentials = _options$withCredenti === void 0 ? false : _options$withCredenti,\n _options$handleManife = _options.handleManifestRedirects,\n handleManifestRedirects = _options$handleManife === void 0 ? false : _options$handleManife;\n _this.vhs_ = vhs;\n _this.withCredentials = withCredentials;\n _this.handleManifestRedirects = handleManifestRedirects;\n\n if (!srcUrlOrPlaylist) {\n throw new Error('A non-empty playlist URL or object is required');\n } // event naming?\n\n\n _this.on('minimumUpdatePeriod', function () {\n _this.refreshXml_();\n }); // live playlist staleness timeout\n\n\n _this.on('mediaupdatetimeout', function () {\n _this.refreshMedia_(_this.media().id);\n });\n\n _this.state = 'HAVE_NOTHING';\n _this.loadedPlaylists_ = {};\n _this.logger_ = logger('DashPlaylistLoader'); // initialize the loader state\n // The masterPlaylistLoader will be created with a string\n\n if (_this.isMaster_) {\n _this.masterPlaylistLoader_.srcUrl = srcUrlOrPlaylist; // TODO: reset sidxMapping between period changes\n // once multi-period is refactored\n\n _this.masterPlaylistLoader_.sidxMapping_ = {};\n } else {\n _this.childPlaylist_ = srcUrlOrPlaylist;\n }\n\n return _this;\n }\n\n var _proto = DashPlaylistLoader.prototype;\n\n _proto.requestErrored_ = function requestErrored_(err, request, startingState) {\n // disposed\n if (!this.request) {\n return true;\n } // pending request is cleared\n\n\n this.request = null;\n\n if (err) {\n // use the provided error object or create one\n // based on the request/response\n this.error = typeof err === 'object' && !(err instanceof Error) ? err : {\n status: request.status,\n message: 'DASH request error at URL: ' + request.uri,\n response: request.response,\n // MEDIA_ERR_NETWORK\n code: 2\n };\n\n if (startingState) {\n this.state = startingState;\n }\n\n this.trigger('error');\n return true;\n }\n }\n /**\n * Verify that the container of the sidx segment can be parsed\n * and if it can, get and parse that segment.\n */\n ;\n\n _proto.addSidxSegments_ = function addSidxSegments_(playlist, startingState, cb) {\n var _this2 = this;\n\n var sidxKey = playlist.sidx && generateSidxKey(playlist.sidx); // playlist lacks sidx or sidx segments were added to this playlist already.\n\n if (!playlist.sidx || !sidxKey || this.masterPlaylistLoader_.sidxMapping_[sidxKey]) {\n // keep this function async\n this.mediaRequest_ = window$1.setTimeout(function () {\n return cb(false);\n }, 0);\n return;\n } // resolve the segment URL relative to the playlist\n\n\n var uri = resolveManifestRedirect(this.handleManifestRedirects, playlist.sidx.resolvedUri);\n\n var fin = function fin(err, request) {\n if (_this2.requestErrored_(err, request, startingState)) {\n return;\n }\n\n var sidxMapping = _this2.masterPlaylistLoader_.sidxMapping_;\n var sidx;\n\n try {\n sidx = parseSidx(toUint8(request.response).subarray(8));\n } catch (e) {\n // sidx parsing failed.\n _this2.requestErrored_(e, request, startingState);\n\n return;\n }\n\n sidxMapping[sidxKey] = {\n sidxInfo: playlist.sidx,\n sidx: sidx\n };\n addSidxSegmentsToPlaylist(playlist, sidx, playlist.sidx.resolvedUri);\n return cb(true);\n };\n\n this.request = containerRequest(uri, this.vhs_.xhr, function (err, request, container, bytes) {\n if (err) {\n return fin(err, request);\n }\n\n if (!container || container !== 'mp4') {\n return fin({\n status: request.status,\n message: \"Unsupported \" + (container || 'unknown') + \" container type for sidx segment at URL: \" + uri,\n // response is just bytes in this case\n // but we really don't want to return that.\n response: '',\n playlist: playlist,\n internal: true,\n blacklistDuration: Infinity,\n // MEDIA_ERR_NETWORK\n code: 2\n }, request);\n } // if we already downloaded the sidx bytes in the container request, use them\n\n\n var _playlist$sidx$bytera = playlist.sidx.byterange,\n offset = _playlist$sidx$bytera.offset,\n length = _playlist$sidx$bytera.length;\n\n if (bytes.length >= length + offset) {\n return fin(err, {\n response: bytes.subarray(offset, offset + length),\n status: request.status,\n uri: request.uri\n });\n } // otherwise request sidx bytes\n\n\n _this2.request = _this2.vhs_.xhr({\n uri: uri,\n responseType: 'arraybuffer',\n headers: segmentXhrHeaders({\n byterange: playlist.sidx.byterange\n })\n }, fin);\n });\n };\n\n _proto.dispose = function dispose() {\n this.trigger('dispose');\n this.stopRequest();\n this.loadedPlaylists_ = {};\n window$1.clearTimeout(this.minimumUpdatePeriodTimeout_);\n window$1.clearTimeout(this.mediaRequest_);\n window$1.clearTimeout(this.mediaUpdateTimeout);\n this.mediaUpdateTimeout = null;\n this.mediaRequest_ = null;\n this.minimumUpdatePeriodTimeout_ = null;\n\n if (this.masterPlaylistLoader_.createMupOnMedia_) {\n this.off('loadedmetadata', this.masterPlaylistLoader_.createMupOnMedia_);\n this.masterPlaylistLoader_.createMupOnMedia_ = null;\n }\n\n this.off();\n };\n\n _proto.hasPendingRequest = function hasPendingRequest() {\n return this.request || this.mediaRequest_;\n };\n\n _proto.stopRequest = function stopRequest() {\n if (this.request) {\n var oldRequest = this.request;\n this.request = null;\n oldRequest.onreadystatechange = null;\n oldRequest.abort();\n }\n };\n\n _proto.media = function media(playlist) {\n var _this3 = this; // getter\n\n\n if (!playlist) {\n return this.media_;\n } // setter\n\n\n if (this.state === 'HAVE_NOTHING') {\n throw new Error('Cannot switch media playlist from ' + this.state);\n }\n\n var startingState = this.state; // find the playlist object if the target playlist has been specified by URI\n\n if (typeof playlist === 'string') {\n if (!this.masterPlaylistLoader_.master.playlists[playlist]) {\n throw new Error('Unknown playlist URI: ' + playlist);\n }\n\n playlist = this.masterPlaylistLoader_.master.playlists[playlist];\n }\n\n var mediaChange = !this.media_ || playlist.id !== this.media_.id; // switch to previously loaded playlists immediately\n\n if (mediaChange && this.loadedPlaylists_[playlist.id] && this.loadedPlaylists_[playlist.id].endList) {\n this.state = 'HAVE_METADATA';\n this.media_ = playlist; // trigger media change if the active media has been updated\n\n if (mediaChange) {\n this.trigger('mediachanging');\n this.trigger('mediachange');\n }\n\n return;\n } // switching to the active playlist is a no-op\n\n\n if (!mediaChange) {\n return;\n } // switching from an already loaded playlist\n\n\n if (this.media_) {\n this.trigger('mediachanging');\n }\n\n this.addSidxSegments_(playlist, startingState, function (sidxChanged) {\n // everything is ready just continue to haveMetadata\n _this3.haveMetadata({\n startingState: startingState,\n playlist: playlist\n });\n });\n };\n\n _proto.haveMetadata = function haveMetadata(_ref2) {\n var startingState = _ref2.startingState,\n playlist = _ref2.playlist;\n this.state = 'HAVE_METADATA';\n this.loadedPlaylists_[playlist.id] = playlist;\n this.mediaRequest_ = null; // This will trigger loadedplaylist\n\n this.refreshMedia_(playlist.id); // fire loadedmetadata the first time a media playlist is loaded\n // to resolve setup of media groups\n\n if (startingState === 'HAVE_MASTER') {\n this.trigger('loadedmetadata');\n } else {\n // trigger media change if the active media has been updated\n this.trigger('mediachange');\n }\n };\n\n _proto.pause = function pause() {\n if (this.masterPlaylistLoader_.createMupOnMedia_) {\n this.off('loadedmetadata', this.masterPlaylistLoader_.createMupOnMedia_);\n this.masterPlaylistLoader_.createMupOnMedia_ = null;\n }\n\n this.stopRequest();\n window$1.clearTimeout(this.mediaUpdateTimeout);\n this.mediaUpdateTimeout = null;\n\n if (this.isMaster_) {\n window$1.clearTimeout(this.masterPlaylistLoader_.minimumUpdatePeriodTimeout_);\n this.masterPlaylistLoader_.minimumUpdatePeriodTimeout_ = null;\n }\n\n if (this.state === 'HAVE_NOTHING') {\n // If we pause the loader before any data has been retrieved, its as if we never\n // started, so reset to an unstarted state.\n this.started = false;\n }\n };\n\n _proto.load = function load(isFinalRendition) {\n var _this4 = this;\n\n window$1.clearTimeout(this.mediaUpdateTimeout);\n this.mediaUpdateTimeout = null;\n var media = this.media();\n\n if (isFinalRendition) {\n var delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000;\n this.mediaUpdateTimeout = window$1.setTimeout(function () {\n return _this4.load();\n }, delay);\n return;\n } // because the playlists are internal to the manifest, load should either load the\n // main manifest, or do nothing but trigger an event\n\n\n if (!this.started) {\n this.start();\n return;\n }\n\n if (media && !media.endList) {\n // Check to see if this is the master loader and the MUP was cleared (this happens\n // when the loader was paused). `media` should be set at this point since one is always\n // set during `start()`.\n if (this.isMaster_ && !this.minimumUpdatePeriodTimeout_) {\n // Trigger minimumUpdatePeriod to refresh the master manifest\n this.trigger('minimumUpdatePeriod'); // Since there was no prior minimumUpdatePeriodTimeout it should be recreated\n\n this.updateMinimumUpdatePeriodTimeout_();\n }\n\n this.trigger('mediaupdatetimeout');\n } else {\n this.trigger('loadedplaylist');\n }\n };\n\n _proto.start = function start() {\n var _this5 = this;\n\n this.started = true; // We don't need to request the master manifest again\n // Call this asynchronously to match the xhr request behavior below\n\n if (!this.isMaster_) {\n this.mediaRequest_ = window$1.setTimeout(function () {\n return _this5.haveMaster_();\n }, 0);\n return;\n }\n\n this.requestMaster_(function (req, masterChanged) {\n _this5.haveMaster_();\n\n if (!_this5.hasPendingRequest() && !_this5.media_) {\n _this5.media(_this5.masterPlaylistLoader_.master.playlists[0]);\n }\n });\n };\n\n _proto.requestMaster_ = function requestMaster_(cb) {\n var _this6 = this;\n\n this.request = this.vhs_.xhr({\n uri: this.masterPlaylistLoader_.srcUrl,\n withCredentials: this.withCredentials\n }, function (error, req) {\n if (_this6.requestErrored_(error, req)) {\n if (_this6.state === 'HAVE_NOTHING') {\n _this6.started = false;\n }\n\n return;\n }\n\n var masterChanged = req.responseText !== _this6.masterPlaylistLoader_.masterXml_;\n _this6.masterPlaylistLoader_.masterXml_ = req.responseText;\n\n if (req.responseHeaders && req.responseHeaders.date) {\n _this6.masterLoaded_ = Date.parse(req.responseHeaders.date);\n } else {\n _this6.masterLoaded_ = Date.now();\n }\n\n _this6.masterPlaylistLoader_.srcUrl = resolveManifestRedirect(_this6.handleManifestRedirects, _this6.masterPlaylistLoader_.srcUrl, req);\n\n if (masterChanged) {\n _this6.handleMaster_();\n\n _this6.syncClientServerClock_(function () {\n return cb(req, masterChanged);\n });\n\n return;\n }\n\n return cb(req, masterChanged);\n });\n }\n /**\n * Parses the master xml for UTCTiming node to sync the client clock to the server\n * clock. If the UTCTiming node requires a HEAD or GET request, that request is made.\n *\n * @param {Function} done\n * Function to call when clock sync has completed\n */\n ;\n\n _proto.syncClientServerClock_ = function syncClientServerClock_(done) {\n var _this7 = this;\n\n var utcTiming = parseUTCTiming(this.masterPlaylistLoader_.masterXml_); // No UTCTiming element found in the mpd. Use Date header from mpd request as the\n // server clock\n\n if (utcTiming === null) {\n this.masterPlaylistLoader_.clientOffset_ = this.masterLoaded_ - Date.now();\n return done();\n }\n\n if (utcTiming.method === 'DIRECT') {\n this.masterPlaylistLoader_.clientOffset_ = utcTiming.value - Date.now();\n return done();\n }\n\n this.request = this.vhs_.xhr({\n uri: resolveUrl(this.masterPlaylistLoader_.srcUrl, utcTiming.value),\n method: utcTiming.method,\n withCredentials: this.withCredentials\n }, function (error, req) {\n // disposed\n if (!_this7.request) {\n return;\n }\n\n if (error) {\n // sync request failed, fall back to using date header from mpd\n // TODO: log warning\n _this7.masterPlaylistLoader_.clientOffset_ = _this7.masterLoaded_ - Date.now();\n return done();\n }\n\n var serverTime;\n\n if (utcTiming.method === 'HEAD') {\n if (!req.responseHeaders || !req.responseHeaders.date) {\n // expected date header not preset, fall back to using date header from mpd\n // TODO: log warning\n serverTime = _this7.masterLoaded_;\n } else {\n serverTime = Date.parse(req.responseHeaders.date);\n }\n } else {\n serverTime = Date.parse(req.responseText);\n }\n\n _this7.masterPlaylistLoader_.clientOffset_ = serverTime - Date.now();\n done();\n });\n };\n\n _proto.haveMaster_ = function haveMaster_() {\n this.state = 'HAVE_MASTER';\n\n if (this.isMaster_) {\n // We have the master playlist at this point, so\n // trigger this to allow MasterPlaylistController\n // to make an initial playlist selection\n this.trigger('loadedplaylist');\n } else if (!this.media_) {\n // no media playlist was specifically selected so select\n // the one the child playlist loader was created with\n this.media(this.childPlaylist_);\n }\n };\n\n _proto.handleMaster_ = function handleMaster_() {\n // clear media request\n this.mediaRequest_ = null;\n var oldMaster = this.masterPlaylistLoader_.master;\n var newMaster = parseMasterXml({\n masterXml: this.masterPlaylistLoader_.masterXml_,\n srcUrl: this.masterPlaylistLoader_.srcUrl,\n clientOffset: this.masterPlaylistLoader_.clientOffset_,\n sidxMapping: this.masterPlaylistLoader_.sidxMapping_,\n previousManifest: oldMaster\n }); // if we have an old master to compare the new master against\n\n if (oldMaster) {\n newMaster = updateMaster(oldMaster, newMaster, this.masterPlaylistLoader_.sidxMapping_);\n } // only update master if we have a new master\n\n\n this.masterPlaylistLoader_.master = newMaster ? newMaster : oldMaster;\n var location = this.masterPlaylistLoader_.master.locations && this.masterPlaylistLoader_.master.locations[0];\n\n if (location && location !== this.masterPlaylistLoader_.srcUrl) {\n this.masterPlaylistLoader_.srcUrl = location;\n }\n\n if (!oldMaster || newMaster && newMaster.minimumUpdatePeriod !== oldMaster.minimumUpdatePeriod) {\n this.updateMinimumUpdatePeriodTimeout_();\n }\n\n return Boolean(newMaster);\n };\n\n _proto.updateMinimumUpdatePeriodTimeout_ = function updateMinimumUpdatePeriodTimeout_() {\n var mpl = this.masterPlaylistLoader_; // cancel any pending creation of mup on media\n // a new one will be added if needed.\n\n if (mpl.createMupOnMedia_) {\n mpl.off('loadedmetadata', mpl.createMupOnMedia_);\n mpl.createMupOnMedia_ = null;\n } // clear any pending timeouts\n\n\n if (mpl.minimumUpdatePeriodTimeout_) {\n window$1.clearTimeout(mpl.minimumUpdatePeriodTimeout_);\n mpl.minimumUpdatePeriodTimeout_ = null;\n }\n\n var mup = mpl.master && mpl.master.minimumUpdatePeriod; // If the minimumUpdatePeriod has a value of 0, that indicates that the current\n // MPD has no future validity, so a new one will need to be acquired when new\n // media segments are to be made available. Thus, we use the target duration\n // in this case\n\n if (mup === 0) {\n if (mpl.media()) {\n mup = mpl.media().targetDuration * 1000;\n } else {\n mpl.createMupOnMedia_ = mpl.updateMinimumUpdatePeriodTimeout_;\n mpl.one('loadedmetadata', mpl.createMupOnMedia_);\n }\n } // if minimumUpdatePeriod is invalid or <= zero, which\n // can happen when a live video becomes VOD. skip timeout\n // creation.\n\n\n if (typeof mup !== 'number' || mup <= 0) {\n if (mup < 0) {\n this.logger_(\"found invalid minimumUpdatePeriod of \" + mup + \", not setting a timeout\");\n }\n\n return;\n }\n\n this.createMUPTimeout_(mup);\n };\n\n _proto.createMUPTimeout_ = function createMUPTimeout_(mup) {\n var mpl = this.masterPlaylistLoader_;\n mpl.minimumUpdatePeriodTimeout_ = window$1.setTimeout(function () {\n mpl.minimumUpdatePeriodTimeout_ = null;\n mpl.trigger('minimumUpdatePeriod');\n mpl.createMUPTimeout_(mup);\n }, mup);\n }\n /**\n * Sends request to refresh the master xml and updates the parsed master manifest\n */\n ;\n\n _proto.refreshXml_ = function refreshXml_() {\n var _this8 = this;\n\n this.requestMaster_(function (req, masterChanged) {\n if (!masterChanged) {\n return;\n }\n\n if (_this8.media_) {\n _this8.media_ = _this8.masterPlaylistLoader_.master.playlists[_this8.media_.id];\n } // This will filter out updated sidx info from the mapping\n\n\n _this8.masterPlaylistLoader_.sidxMapping_ = filterChangedSidxMappings(_this8.masterPlaylistLoader_.master, _this8.masterPlaylistLoader_.sidxMapping_);\n\n _this8.addSidxSegments_(_this8.media(), _this8.state, function (sidxChanged) {\n // TODO: do we need to reload the current playlist?\n _this8.refreshMedia_(_this8.media().id);\n });\n });\n }\n /**\n * Refreshes the media playlist by re-parsing the master xml and updating playlist\n * references. If this is an alternate loader, the updated parsed manifest is retrieved\n * from the master loader.\n */\n ;\n\n _proto.refreshMedia_ = function refreshMedia_(mediaID) {\n var _this9 = this;\n\n if (!mediaID) {\n throw new Error('refreshMedia_ must take a media id');\n } // for master we have to reparse the master xml\n // to re-create segments based on current timing values\n // which may change media. We only skip updating master\n // if this is the first time this.media_ is being set.\n // as master was just parsed in that case.\n\n\n if (this.media_ && this.isMaster_) {\n this.handleMaster_();\n }\n\n var playlists = this.masterPlaylistLoader_.master.playlists;\n var mediaChanged = !this.media_ || this.media_ !== playlists[mediaID];\n\n if (mediaChanged) {\n this.media_ = playlists[mediaID];\n } else {\n this.trigger('playlistunchanged');\n }\n\n if (!this.mediaUpdateTimeout) {\n var createMediaUpdateTimeout = function createMediaUpdateTimeout() {\n if (_this9.media().endList) {\n return;\n }\n\n _this9.mediaUpdateTimeout = window$1.setTimeout(function () {\n _this9.trigger('mediaupdatetimeout');\n\n createMediaUpdateTimeout();\n }, refreshDelay(_this9.media(), Boolean(mediaChanged)));\n };\n\n createMediaUpdateTimeout();\n }\n\n this.trigger('loadedplaylist');\n };\n\n return DashPlaylistLoader;\n}(EventTarget);\n\nvar Config = {\n GOAL_BUFFER_LENGTH: 30,\n MAX_GOAL_BUFFER_LENGTH: 60,\n BACK_BUFFER_LENGTH: 30,\n GOAL_BUFFER_LENGTH_RATE: 1,\n // 0.5 MB/s\n INITIAL_BANDWIDTH: 4194304,\n // A fudge factor to apply to advertised playlist bitrates to account for\n // temporary flucations in client bandwidth\n BANDWIDTH_VARIANCE: 1.2,\n // How much of the buffer must be filled before we consider upswitching\n BUFFER_LOW_WATER_LINE: 0,\n MAX_BUFFER_LOW_WATER_LINE: 30,\n // TODO: Remove this when experimentalBufferBasedABR is removed\n EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE: 16,\n BUFFER_LOW_WATER_LINE_RATE: 1,\n // If the buffer is greater than the high water line, we won't switch down\n BUFFER_HIGH_WATER_LINE: 30\n};\n\nvar stringToArrayBuffer = function stringToArrayBuffer(string) {\n var view = new Uint8Array(new ArrayBuffer(string.length));\n\n for (var i = 0; i < string.length; i++) {\n view[i] = string.charCodeAt(i);\n }\n\n return view.buffer;\n};\n/* global Blob, BlobBuilder, Worker */\n// unify worker interface\n\n\nvar browserWorkerPolyFill = function browserWorkerPolyFill(workerObj) {\n // node only supports on/off\n workerObj.on = workerObj.addEventListener;\n workerObj.off = workerObj.removeEventListener;\n return workerObj;\n};\n\nvar createObjectURL = function createObjectURL(str) {\n try {\n return URL.createObjectURL(new Blob([str], {\n type: 'application/javascript'\n }));\n } catch (e) {\n var blob = new BlobBuilder();\n blob.append(str);\n return URL.createObjectURL(blob.getBlob());\n }\n};\n\nvar factory = function factory(code) {\n return function () {\n var objectUrl = createObjectURL(code);\n var worker = browserWorkerPolyFill(new Worker(objectUrl));\n worker.objURL = objectUrl;\n var terminate = worker.terminate;\n worker.on = worker.addEventListener;\n worker.off = worker.removeEventListener;\n\n worker.terminate = function () {\n URL.revokeObjectURL(objectUrl);\n return terminate.call(this);\n };\n\n return worker;\n };\n};\n\nvar transform = function transform(code) {\n return \"var browserWorkerPolyFill = \" + browserWorkerPolyFill.toString() + \";\\n\" + 'browserWorkerPolyFill(self);\\n' + code;\n};\n\nvar getWorkerString = function getWorkerString(fn) {\n return fn.toString().replace(/^function.+?{/, '').slice(0, -1);\n};\n/* rollup-plugin-worker-factory start for worker!/Users/ddashkevich/projects/http-streaming/src/transmuxer-worker.js */\n\n\nvar workerCode$1 = transform(getWorkerString(function () {\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * A lightweight readable stream implemention that handles event dispatching.\n * Objects that inherit from streams should call init in their constructors.\n */\n var Stream = function Stream() {\n this.init = function () {\n var listeners = {};\n /**\n * Add a listener for a specified event type.\n * @param type {string} the event name\n * @param listener {function} the callback to be invoked when an event of\n * the specified type occurs\n */\n\n this.on = function (type, listener) {\n if (!listeners[type]) {\n listeners[type] = [];\n }\n\n listeners[type] = listeners[type].concat(listener);\n };\n /**\n * Remove a listener for a specified event type.\n * @param type {string} the event name\n * @param listener {function} a function previously registered for this\n * type of event through `on`\n */\n\n\n this.off = function (type, listener) {\n var index;\n\n if (!listeners[type]) {\n return false;\n }\n\n index = listeners[type].indexOf(listener);\n listeners[type] = listeners[type].slice();\n listeners[type].splice(index, 1);\n return index > -1;\n };\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n * @param type {string} the event name\n */\n\n\n this.trigger = function (type) {\n var callbacks, i, length, args;\n callbacks = listeners[type];\n\n if (!callbacks) {\n return;\n } // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n\n\n if (arguments.length === 2) {\n length = callbacks.length;\n\n for (i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n args = [];\n i = arguments.length;\n\n for (i = 1; i < arguments.length; ++i) {\n args.push(arguments[i]);\n }\n\n length = callbacks.length;\n\n for (i = 0; i < length; ++i) {\n callbacks[i].apply(this, args);\n }\n }\n };\n /**\n * Destroys the stream and cleans up.\n */\n\n\n this.dispose = function () {\n listeners = {};\n };\n };\n };\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n * @param destination {stream} the stream that will receive all `data` events\n * @param autoFlush {boolean} if false, we will not call `flush` on the destination\n * when the current stream emits a 'done' event\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */\n\n\n Stream.prototype.pipe = function (destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n this.on('done', function (flushSource) {\n destination.flush(flushSource);\n });\n this.on('partialdone', function (flushSource) {\n destination.partialFlush(flushSource);\n });\n this.on('endedtimeline', function (flushSource) {\n destination.endTimeline(flushSource);\n });\n this.on('reset', function (flushSource) {\n destination.reset(flushSource);\n });\n return destination;\n }; // Default stream functions that are expected to be overridden to perform\n // actual work. These are provided by the prototype as a sort of no-op\n // implementation so that we don't have to check for their existence in the\n // `pipe` function above.\n\n\n Stream.prototype.push = function (data) {\n this.trigger('data', data);\n };\n\n Stream.prototype.flush = function (flushSource) {\n this.trigger('done', flushSource);\n };\n\n Stream.prototype.partialFlush = function (flushSource) {\n this.trigger('partialdone', flushSource);\n };\n\n Stream.prototype.endTimeline = function (flushSource) {\n this.trigger('endedtimeline', flushSource);\n };\n\n Stream.prototype.reset = function (flushSource) {\n this.trigger('reset', flushSource);\n };\n\n var stream = Stream;\n var MAX_UINT32$1 = Math.pow(2, 32);\n\n var getUint64$2 = function getUint64(uint8) {\n var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);\n var value;\n\n if (dv.getBigUint64) {\n value = dv.getBigUint64(0);\n\n if (value < Number.MAX_SAFE_INTEGER) {\n return Number(value);\n }\n\n return value;\n }\n\n return dv.getUint32(0) * MAX_UINT32$1 + dv.getUint32(4);\n };\n\n var numbers = {\n getUint64: getUint64$2,\n MAX_UINT32: MAX_UINT32$1\n };\n var MAX_UINT32 = numbers.MAX_UINT32;\n var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun$1, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; // pre-calculate constants\n\n (function () {\n var i;\n types = {\n avc1: [],\n // codingname\n avcC: [],\n btrt: [],\n dinf: [],\n dref: [],\n esds: [],\n ftyp: [],\n hdlr: [],\n mdat: [],\n mdhd: [],\n mdia: [],\n mfhd: [],\n minf: [],\n moof: [],\n moov: [],\n mp4a: [],\n // codingname\n mvex: [],\n mvhd: [],\n pasp: [],\n sdtp: [],\n smhd: [],\n stbl: [],\n stco: [],\n stsc: [],\n stsd: [],\n stsz: [],\n stts: [],\n styp: [],\n tfdt: [],\n tfhd: [],\n traf: [],\n trak: [],\n trun: [],\n trex: [],\n tkhd: [],\n vmhd: []\n }; // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we\n // don't throw an error\n\n if (typeof Uint8Array === 'undefined') {\n return;\n }\n\n for (i in types) {\n if (types.hasOwnProperty(i)) {\n types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];\n }\n }\n\n MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]);\n AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]);\n MINOR_VERSION = new Uint8Array([0, 0, 0, 1]);\n VIDEO_HDLR = new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, 0x00, 0x00, // pre_defined\n 0x76, 0x69, 0x64, 0x65, // handler_type: 'vide'\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'\n ]);\n AUDIO_HDLR = new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, 0x00, 0x00, // pre_defined\n 0x73, 0x6f, 0x75, 0x6e, // handler_type: 'soun'\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'\n ]);\n HDLR_TYPES = {\n video: VIDEO_HDLR,\n audio: AUDIO_HDLR\n };\n DREF = new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, 0x00, 0x01, // entry_count\n 0x00, 0x00, 0x00, 0x0c, // entry_size\n 0x75, 0x72, 0x6c, 0x20, // 'url' type\n 0x00, // version 0\n 0x00, 0x00, 0x01 // entry_flags\n ]);\n SMHD = new Uint8Array([0x00, // version\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, // balance, 0 means centered\n 0x00, 0x00 // reserved\n ]);\n STCO = new Uint8Array([0x00, // version\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, 0x00, 0x00 // entry_count\n ]);\n STSC = STCO;\n STSZ = new Uint8Array([0x00, // version\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, 0x00, 0x00, // sample_size\n 0x00, 0x00, 0x00, 0x00 // sample_count\n ]);\n STTS = STCO;\n VMHD = new Uint8Array([0x00, // version\n 0x00, 0x00, 0x01, // flags\n 0x00, 0x00, // graphicsmode\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor\n ]);\n })();\n\n box = function box(type) {\n var payload = [],\n size = 0,\n i,\n result,\n view;\n\n for (i = 1; i < arguments.length; i++) {\n payload.push(arguments[i]);\n }\n\n i = payload.length; // calculate the total size we need to allocate\n\n while (i--) {\n size += payload[i].byteLength;\n }\n\n result = new Uint8Array(size + 8);\n view = new DataView(result.buffer, result.byteOffset, result.byteLength);\n view.setUint32(0, result.byteLength);\n result.set(type, 4); // copy the payload into the result\n\n for (i = 0, size = 8; i < payload.length; i++) {\n result.set(payload[i], size);\n size += payload[i].byteLength;\n }\n\n return result;\n };\n\n dinf = function dinf() {\n return box(types.dinf, box(types.dref, DREF));\n };\n\n esds = function esds(track) {\n return box(types.esds, new Uint8Array([0x00, // version\n 0x00, 0x00, 0x00, // flags\n // ES_Descriptor\n 0x03, // tag, ES_DescrTag\n 0x19, // length\n 0x00, 0x00, // ES_ID\n 0x00, // streamDependenceFlag, URL_flag, reserved, streamPriority\n // DecoderConfigDescriptor\n 0x04, // tag, DecoderConfigDescrTag\n 0x11, // length\n 0x40, // object type\n 0x15, // streamType\n 0x00, 0x06, 0x00, // bufferSizeDB\n 0x00, 0x00, 0xda, 0xc0, // maxBitrate\n 0x00, 0x00, 0xda, 0xc0, // avgBitrate\n // DecoderSpecificInfo\n 0x05, // tag, DecoderSpecificInfoTag\n 0x02, // length\n // ISO/IEC 14496-3, AudioSpecificConfig\n // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35\n track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig\n ]));\n };\n\n ftyp = function ftyp() {\n return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND);\n };\n\n hdlr = function hdlr(type) {\n return box(types.hdlr, HDLR_TYPES[type]);\n };\n\n mdat = function mdat(data) {\n return box(types.mdat, data);\n };\n\n mdhd = function mdhd(track) {\n var result = new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, 0x00, 0x02, // creation_time\n 0x00, 0x00, 0x00, 0x03, // modification_time\n 0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 \"ticks\" per second\n track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF, // duration\n 0x55, 0xc4, // 'und' language (undetermined)\n 0x00, 0x00]); // Use the sample rate from the track metadata, when it is\n // defined. The sample rate can be parsed out of an ADTS header, for\n // instance.\n\n if (track.samplerate) {\n result[12] = track.samplerate >>> 24 & 0xFF;\n result[13] = track.samplerate >>> 16 & 0xFF;\n result[14] = track.samplerate >>> 8 & 0xFF;\n result[15] = track.samplerate & 0xFF;\n }\n\n return box(types.mdhd, result);\n };\n\n mdia = function mdia(track) {\n return box(types.mdia, mdhd(track), hdlr(track.type), minf(track));\n };\n\n mfhd = function mfhd(sequenceNumber) {\n return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00, // flags\n (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number\n ]));\n };\n\n minf = function minf(track) {\n return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track));\n };\n\n moof = function moof(sequenceNumber, tracks) {\n var trackFragments = [],\n i = tracks.length; // build traf boxes for each track fragment\n\n while (i--) {\n trackFragments[i] = traf(tracks[i]);\n }\n\n return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments));\n };\n /**\n * Returns a movie box.\n * @param tracks {array} the tracks associated with this movie\n * @see ISO/IEC 14496-12:2012(E), section 8.2.1\n */\n\n\n moov = function moov(tracks) {\n var i = tracks.length,\n boxes = [];\n\n while (i--) {\n boxes[i] = trak(tracks[i]);\n }\n\n return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks)));\n };\n\n mvex = function mvex(tracks) {\n var i = tracks.length,\n boxes = [];\n\n while (i--) {\n boxes[i] = trex(tracks[i]);\n }\n\n return box.apply(null, [types.mvex].concat(boxes));\n };\n\n mvhd = function mvhd(duration) {\n var bytes = new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, 0x00, 0x01, // creation_time\n 0x00, 0x00, 0x00, 0x02, // modification_time\n 0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 \"ticks\" per second\n (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF, // duration\n 0x00, 0x01, 0x00, 0x00, // 1.0 rate\n 0x01, 0x00, // 1.0 volume\n 0x00, 0x00, // reserved\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined\n 0xff, 0xff, 0xff, 0xff // next_track_ID\n ]);\n return box(types.mvhd, bytes);\n };\n\n sdtp = function sdtp(track) {\n var samples = track.samples || [],\n bytes = new Uint8Array(4 + samples.length),\n flags,\n i; // leave the full box header (4 bytes) all zero\n // write the sample table\n\n for (i = 0; i < samples.length; i++) {\n flags = samples[i].flags;\n bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;\n }\n\n return box(types.sdtp, bytes);\n };\n\n stbl = function stbl(track) {\n return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO));\n };\n\n (function () {\n var videoSample, audioSample;\n\n stsd = function stsd(track) {\n return box(types.stsd, new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x00, // flags\n 0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track));\n };\n\n videoSample = function videoSample(track) {\n var sps = track.sps || [],\n pps = track.pps || [],\n sequenceParameterSets = [],\n pictureParameterSets = [],\n i,\n avc1Box; // assemble the SPSs\n\n for (i = 0; i < sps.length; i++) {\n sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8);\n sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength\n\n sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS\n } // assemble the PPSs\n\n\n for (i = 0; i < pps.length; i++) {\n pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8);\n pictureParameterSets.push(pps[i].byteLength & 0xFF);\n pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));\n }\n\n avc1Box = [types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x01, // data_reference_index\n 0x00, 0x00, // pre_defined\n 0x00, 0x00, // reserved\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined\n (track.width & 0xff00) >> 8, track.width & 0xff, // width\n (track.height & 0xff00) >> 8, track.height & 0xff, // height\n 0x00, 0x48, 0x00, 0x00, // horizresolution\n 0x00, 0x48, 0x00, 0x00, // vertresolution\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x01, // frame_count\n 0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // compressorname\n 0x00, 0x18, // depth = 24\n 0x11, 0x11 // pre_defined = -1\n ]), box(types.avcC, new Uint8Array([0x01, // configurationVersion\n track.profileIdc, // AVCProfileIndication\n track.profileCompatibility, // profile_compatibility\n track.levelIdc, // AVCLevelIndication\n 0xff // lengthSizeMinusOne, hard-coded to 4 bytes\n ].concat([sps.length], // numOfSequenceParameterSets\n sequenceParameterSets, // \"SPS\"\n [pps.length], // numOfPictureParameterSets\n pictureParameterSets // \"PPS\"\n ))), box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB\n 0x00, 0x2d, 0xc6, 0xc0, // maxBitrate\n 0x00, 0x2d, 0xc6, 0xc0 // avgBitrate\n ]))];\n\n if (track.sarRatio) {\n var hSpacing = track.sarRatio[0],\n vSpacing = track.sarRatio[1];\n avc1Box.push(box(types.pasp, new Uint8Array([(hSpacing & 0xFF000000) >> 24, (hSpacing & 0xFF0000) >> 16, (hSpacing & 0xFF00) >> 8, hSpacing & 0xFF, (vSpacing & 0xFF000000) >> 24, (vSpacing & 0xFF0000) >> 16, (vSpacing & 0xFF00) >> 8, vSpacing & 0xFF])));\n }\n\n return box.apply(null, avc1Box);\n };\n\n audioSample = function audioSample(track) {\n return box(types.mp4a, new Uint8Array([// SampleEntry, ISO/IEC 14496-12\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x01, // data_reference_index\n // AudioSampleEntry, ISO/IEC 14496-12\n 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x00, 0x00, 0x00, // reserved\n (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff, // channelcount\n (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff, // samplesize\n 0x00, 0x00, // pre_defined\n 0x00, 0x00, // reserved\n (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16\n // MP4AudioSampleEntry, ISO/IEC 14496-14\n ]), esds(track));\n };\n })();\n\n tkhd = function tkhd(track) {\n var result = new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x07, // flags\n 0x00, 0x00, 0x00, 0x00, // creation_time\n 0x00, 0x00, 0x00, 0x00, // modification_time\n (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n 0x00, 0x00, 0x00, 0x00, // reserved\n (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF, // duration\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n 0x00, 0x00, // layer\n 0x00, 0x00, // alternate_group\n 0x01, 0x00, // non-audio track volume\n 0x00, 0x00, // reserved\n 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix\n (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00, // width\n (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height\n ]);\n return box(types.tkhd, result);\n };\n /**\n * Generate a track fragment (traf) box. A traf box collects metadata\n * about tracks in a movie fragment (moof) box.\n */\n\n\n traf = function traf(track) {\n var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime;\n trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x3a, // flags\n (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n 0x00, 0x00, 0x00, 0x01, // sample_description_index\n 0x00, 0x00, 0x00, 0x00, // default_sample_duration\n 0x00, 0x00, 0x00, 0x00, // default_sample_size\n 0x00, 0x00, 0x00, 0x00 // default_sample_flags\n ]));\n upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / MAX_UINT32);\n lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % MAX_UINT32);\n trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01, // version 1\n 0x00, 0x00, 0x00, // flags\n // baseMediaDecodeTime\n upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); // the data offset specifies the number of bytes from the start of\n // the containing moof to the first payload byte of the associated\n // mdat\n\n dataOffset = 32 + // tfhd\n 20 + // tfdt\n 8 + // traf header\n 16 + // mfhd\n 8 + // moof header\n 8; // mdat header\n // audio tracks require less metadata\n\n if (track.type === 'audio') {\n trackFragmentRun = trun$1(track, dataOffset);\n return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun);\n } // video tracks should contain an independent and disposable samples\n // box (sdtp)\n // generate one and adjust offsets to match\n\n\n sampleDependencyTable = sdtp(track);\n trackFragmentRun = trun$1(track, sampleDependencyTable.length + dataOffset);\n return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable);\n };\n /**\n * Generate a track box.\n * @param track {object} a track definition\n * @return {Uint8Array} the track box\n */\n\n\n trak = function trak(track) {\n track.duration = track.duration || 0xffffffff;\n return box(types.trak, tkhd(track), mdia(track));\n };\n\n trex = function trex(track) {\n var result = new Uint8Array([0x00, // version 0\n 0x00, 0x00, 0x00, // flags\n (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n 0x00, 0x00, 0x00, 0x01, // default_sample_description_index\n 0x00, 0x00, 0x00, 0x00, // default_sample_duration\n 0x00, 0x00, 0x00, 0x00, // default_sample_size\n 0x00, 0x01, 0x00, 0x01 // default_sample_flags\n ]); // the last two bytes of default_sample_flags is the sample\n // degradation priority, a hint about the importance of this sample\n // relative to others. Lower the degradation priority for all sample\n // types other than video.\n\n if (track.type !== 'video') {\n result[result.length - 1] = 0x00;\n }\n\n return box(types.trex, result);\n };\n\n (function () {\n var audioTrun, videoTrun, trunHeader; // This method assumes all samples are uniform. That is, if a\n // duration is present for the first sample, it will be present for\n // all subsequent samples.\n // see ISO/IEC 14496-12:2012, Section 8.8.8.1\n\n trunHeader = function trunHeader(samples, offset) {\n var durationPresent = 0,\n sizePresent = 0,\n flagsPresent = 0,\n compositionTimeOffset = 0; // trun flag constants\n\n if (samples.length) {\n if (samples[0].duration !== undefined) {\n durationPresent = 0x1;\n }\n\n if (samples[0].size !== undefined) {\n sizePresent = 0x2;\n }\n\n if (samples[0].flags !== undefined) {\n flagsPresent = 0x4;\n }\n\n if (samples[0].compositionTimeOffset !== undefined) {\n compositionTimeOffset = 0x8;\n }\n }\n\n return [0x00, // version 0\n 0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01, // flags\n (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF, // sample_count\n (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset\n ];\n };\n\n videoTrun = function videoTrun(track, offset) {\n var bytesOffest, bytes, header, samples, sample, i;\n samples = track.samples || [];\n offset += 8 + 12 + 16 * samples.length;\n header = trunHeader(samples, offset);\n bytes = new Uint8Array(header.length + samples.length * 16);\n bytes.set(header);\n bytesOffest = header.length;\n\n for (i = 0; i < samples.length; i++) {\n sample = samples[i];\n bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;\n bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;\n bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;\n bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration\n\n bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;\n bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;\n bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;\n bytes[bytesOffest++] = sample.size & 0xFF; // sample_size\n\n bytes[bytesOffest++] = sample.flags.isLeading << 2 | sample.flags.dependsOn;\n bytes[bytesOffest++] = sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample;\n bytes[bytesOffest++] = sample.flags.degradationPriority & 0xF0 << 8;\n bytes[bytesOffest++] = sample.flags.degradationPriority & 0x0F; // sample_flags\n\n bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF000000) >>> 24;\n bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF0000) >>> 16;\n bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF00) >>> 8;\n bytes[bytesOffest++] = sample.compositionTimeOffset & 0xFF; // sample_composition_time_offset\n }\n\n return box(types.trun, bytes);\n };\n\n audioTrun = function audioTrun(track, offset) {\n var bytes, bytesOffest, header, samples, sample, i;\n samples = track.samples || [];\n offset += 8 + 12 + 8 * samples.length;\n header = trunHeader(samples, offset);\n bytes = new Uint8Array(header.length + samples.length * 8);\n bytes.set(header);\n bytesOffest = header.length;\n\n for (i = 0; i < samples.length; i++) {\n sample = samples[i];\n bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;\n bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;\n bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;\n bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration\n\n bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;\n bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;\n bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;\n bytes[bytesOffest++] = sample.size & 0xFF; // sample_size\n }\n\n return box(types.trun, bytes);\n };\n\n trun$1 = function trun(track, offset) {\n if (track.type === 'audio') {\n return audioTrun(track, offset);\n }\n\n return videoTrun(track, offset);\n };\n })();\n\n var mp4Generator = {\n ftyp: ftyp,\n mdat: mdat,\n moof: moof,\n moov: moov,\n initSegment: function initSegment(tracks) {\n var fileType = ftyp(),\n movie = moov(tracks),\n result;\n result = new Uint8Array(fileType.byteLength + movie.byteLength);\n result.set(fileType);\n result.set(movie, fileType.byteLength);\n return result;\n }\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n // Convert an array of nal units into an array of frames with each frame being\n // composed of the nal units that make up that frame\n // Also keep track of cummulative data about the frame from the nal units such\n // as the frame duration, starting pts, etc.\n\n var groupNalsIntoFrames = function groupNalsIntoFrames(nalUnits) {\n var i,\n currentNal,\n currentFrame = [],\n frames = []; // TODO added for LHLS, make sure this is OK\n\n frames.byteLength = 0;\n frames.nalCount = 0;\n frames.duration = 0;\n currentFrame.byteLength = 0;\n\n for (i = 0; i < nalUnits.length; i++) {\n currentNal = nalUnits[i]; // Split on 'aud'-type nal units\n\n if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {\n // Since the very first nal unit is expected to be an AUD\n // only push to the frames array when currentFrame is not empty\n if (currentFrame.length) {\n currentFrame.duration = currentNal.dts - currentFrame.dts; // TODO added for LHLS, make sure this is OK\n\n frames.byteLength += currentFrame.byteLength;\n frames.nalCount += currentFrame.length;\n frames.duration += currentFrame.duration;\n frames.push(currentFrame);\n }\n\n currentFrame = [currentNal];\n currentFrame.byteLength = currentNal.data.byteLength;\n currentFrame.pts = currentNal.pts;\n currentFrame.dts = currentNal.dts;\n } else {\n // Specifically flag key frames for ease of use later\n if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {\n currentFrame.keyFrame = true;\n }\n\n currentFrame.duration = currentNal.dts - currentFrame.dts;\n currentFrame.byteLength += currentNal.data.byteLength;\n currentFrame.push(currentNal);\n }\n } // For the last frame, use the duration of the previous frame if we\n // have nothing better to go on\n\n\n if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) {\n currentFrame.duration = frames[frames.length - 1].duration;\n } // Push the final frame\n // TODO added for LHLS, make sure this is OK\n\n\n frames.byteLength += currentFrame.byteLength;\n frames.nalCount += currentFrame.length;\n frames.duration += currentFrame.duration;\n frames.push(currentFrame);\n return frames;\n }; // Convert an array of frames into an array of Gop with each Gop being composed\n // of the frames that make up that Gop\n // Also keep track of cummulative data about the Gop from the frames such as the\n // Gop duration, starting pts, etc.\n\n\n var groupFramesIntoGops = function groupFramesIntoGops(frames) {\n var i,\n currentFrame,\n currentGop = [],\n gops = []; // We must pre-set some of the values on the Gop since we\n // keep running totals of these values\n\n currentGop.byteLength = 0;\n currentGop.nalCount = 0;\n currentGop.duration = 0;\n currentGop.pts = frames[0].pts;\n currentGop.dts = frames[0].dts; // store some metadata about all the Gops\n\n gops.byteLength = 0;\n gops.nalCount = 0;\n gops.duration = 0;\n gops.pts = frames[0].pts;\n gops.dts = frames[0].dts;\n\n for (i = 0; i < frames.length; i++) {\n currentFrame = frames[i];\n\n if (currentFrame.keyFrame) {\n // Since the very first frame is expected to be an keyframe\n // only push to the gops array when currentGop is not empty\n if (currentGop.length) {\n gops.push(currentGop);\n gops.byteLength += currentGop.byteLength;\n gops.nalCount += currentGop.nalCount;\n gops.duration += currentGop.duration;\n }\n\n currentGop = [currentFrame];\n currentGop.nalCount = currentFrame.length;\n currentGop.byteLength = currentFrame.byteLength;\n currentGop.pts = currentFrame.pts;\n currentGop.dts = currentFrame.dts;\n currentGop.duration = currentFrame.duration;\n } else {\n currentGop.duration += currentFrame.duration;\n currentGop.nalCount += currentFrame.length;\n currentGop.byteLength += currentFrame.byteLength;\n currentGop.push(currentFrame);\n }\n }\n\n if (gops.length && currentGop.duration <= 0) {\n currentGop.duration = gops[gops.length - 1].duration;\n }\n\n gops.byteLength += currentGop.byteLength;\n gops.nalCount += currentGop.nalCount;\n gops.duration += currentGop.duration; // push the final Gop\n\n gops.push(currentGop);\n return gops;\n };\n /*\n * Search for the first keyframe in the GOPs and throw away all frames\n * until that keyframe. Then extend the duration of the pulled keyframe\n * and pull the PTS and DTS of the keyframe so that it covers the time\n * range of the frames that were disposed.\n *\n * @param {Array} gops video GOPs\n * @returns {Array} modified video GOPs\n */\n\n\n var extendFirstKeyFrame = function extendFirstKeyFrame(gops) {\n var currentGop;\n\n if (!gops[0][0].keyFrame && gops.length > 1) {\n // Remove the first GOP\n currentGop = gops.shift();\n gops.byteLength -= currentGop.byteLength;\n gops.nalCount -= currentGop.nalCount; // Extend the first frame of what is now the\n // first gop to cover the time period of the\n // frames we just removed\n\n gops[0][0].dts = currentGop.dts;\n gops[0][0].pts = currentGop.pts;\n gops[0][0].duration += currentGop.duration;\n }\n\n return gops;\n };\n /**\n * Default sample object\n * see ISO/IEC 14496-12:2012, section 8.6.4.3\n */\n\n\n var createDefaultSample = function createDefaultSample() {\n return {\n size: 0,\n flags: {\n isLeading: 0,\n dependsOn: 1,\n isDependedOn: 0,\n hasRedundancy: 0,\n degradationPriority: 0,\n isNonSyncSample: 1\n }\n };\n };\n /*\n * Collates information from a video frame into an object for eventual\n * entry into an MP4 sample table.\n *\n * @param {Object} frame the video frame\n * @param {Number} dataOffset the byte offset to position the sample\n * @return {Object} object containing sample table info for a frame\n */\n\n\n var sampleForFrame = function sampleForFrame(frame, dataOffset) {\n var sample = createDefaultSample();\n sample.dataOffset = dataOffset;\n sample.compositionTimeOffset = frame.pts - frame.dts;\n sample.duration = frame.duration;\n sample.size = 4 * frame.length; // Space for nal unit size\n\n sample.size += frame.byteLength;\n\n if (frame.keyFrame) {\n sample.flags.dependsOn = 2;\n sample.flags.isNonSyncSample = 0;\n }\n\n return sample;\n }; // generate the track's sample table from an array of gops\n\n\n var generateSampleTable$1 = function generateSampleTable(gops, baseDataOffset) {\n var h,\n i,\n sample,\n currentGop,\n currentFrame,\n dataOffset = baseDataOffset || 0,\n samples = [];\n\n for (h = 0; h < gops.length; h++) {\n currentGop = gops[h];\n\n for (i = 0; i < currentGop.length; i++) {\n currentFrame = currentGop[i];\n sample = sampleForFrame(currentFrame, dataOffset);\n dataOffset += sample.size;\n samples.push(sample);\n }\n }\n\n return samples;\n }; // generate the track's raw mdat data from an array of gops\n\n\n var concatenateNalData = function concatenateNalData(gops) {\n var h,\n i,\n j,\n currentGop,\n currentFrame,\n currentNal,\n dataOffset = 0,\n nalsByteLength = gops.byteLength,\n numberOfNals = gops.nalCount,\n totalByteLength = nalsByteLength + 4 * numberOfNals,\n data = new Uint8Array(totalByteLength),\n view = new DataView(data.buffer); // For each Gop..\n\n for (h = 0; h < gops.length; h++) {\n currentGop = gops[h]; // For each Frame..\n\n for (i = 0; i < currentGop.length; i++) {\n currentFrame = currentGop[i]; // For each NAL..\n\n for (j = 0; j < currentFrame.length; j++) {\n currentNal = currentFrame[j];\n view.setUint32(dataOffset, currentNal.data.byteLength);\n dataOffset += 4;\n data.set(currentNal.data, dataOffset);\n dataOffset += currentNal.data.byteLength;\n }\n }\n }\n\n return data;\n }; // generate the track's sample table from a frame\n\n\n var generateSampleTableForFrame = function generateSampleTableForFrame(frame, baseDataOffset) {\n var sample,\n dataOffset = baseDataOffset || 0,\n samples = [];\n sample = sampleForFrame(frame, dataOffset);\n samples.push(sample);\n return samples;\n }; // generate the track's raw mdat data from a frame\n\n\n var concatenateNalDataForFrame = function concatenateNalDataForFrame(frame) {\n var i,\n currentNal,\n dataOffset = 0,\n nalsByteLength = frame.byteLength,\n numberOfNals = frame.length,\n totalByteLength = nalsByteLength + 4 * numberOfNals,\n data = new Uint8Array(totalByteLength),\n view = new DataView(data.buffer); // For each NAL..\n\n for (i = 0; i < frame.length; i++) {\n currentNal = frame[i];\n view.setUint32(dataOffset, currentNal.data.byteLength);\n dataOffset += 4;\n data.set(currentNal.data, dataOffset);\n dataOffset += currentNal.data.byteLength;\n }\n\n return data;\n };\n\n var frameUtils = {\n groupNalsIntoFrames: groupNalsIntoFrames,\n groupFramesIntoGops: groupFramesIntoGops,\n extendFirstKeyFrame: extendFirstKeyFrame,\n generateSampleTable: generateSampleTable$1,\n concatenateNalData: concatenateNalData,\n generateSampleTableForFrame: generateSampleTableForFrame,\n concatenateNalDataForFrame: concatenateNalDataForFrame\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var highPrefix = [33, 16, 5, 32, 164, 27];\n var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252];\n\n var zeroFill = function zeroFill(count) {\n var a = [];\n\n while (count--) {\n a.push(0);\n }\n\n return a;\n };\n\n var makeTable = function makeTable(metaTable) {\n return Object.keys(metaTable).reduce(function (obj, key) {\n obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) {\n return arr.concat(part);\n }, []));\n return obj;\n }, {});\n };\n\n var silence;\n\n var silence_1 = function silence_1() {\n if (!silence) {\n // Frames-of-silence to use for filling in missing AAC frames\n var coneOfSilence = {\n 96000: [highPrefix, [227, 64], zeroFill(154), [56]],\n 88200: [highPrefix, [231], zeroFill(170), [56]],\n 64000: [highPrefix, [248, 192], zeroFill(240), [56]],\n 48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]],\n 44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]],\n 32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]],\n 24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]],\n 16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]],\n 12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]],\n 11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]],\n 8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]]\n };\n silence = makeTable(coneOfSilence);\n }\n\n return silence;\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n\n var ONE_SECOND_IN_TS$4 = 90000,\n // 90kHz clock\n secondsToVideoTs,\n secondsToAudioTs,\n videoTsToSeconds,\n audioTsToSeconds,\n audioTsToVideoTs,\n videoTsToAudioTs,\n metadataTsToSeconds;\n\n secondsToVideoTs = function secondsToVideoTs(seconds) {\n return seconds * ONE_SECOND_IN_TS$4;\n };\n\n secondsToAudioTs = function secondsToAudioTs(seconds, sampleRate) {\n return seconds * sampleRate;\n };\n\n videoTsToSeconds = function videoTsToSeconds(timestamp) {\n return timestamp / ONE_SECOND_IN_TS$4;\n };\n\n audioTsToSeconds = function audioTsToSeconds(timestamp, sampleRate) {\n return timestamp / sampleRate;\n };\n\n audioTsToVideoTs = function audioTsToVideoTs(timestamp, sampleRate) {\n return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));\n };\n\n videoTsToAudioTs = function videoTsToAudioTs(timestamp, sampleRate) {\n return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);\n };\n /**\n * Adjust ID3 tag or caption timing information by the timeline pts values\n * (if keepOriginalTimestamps is false) and convert to seconds\n */\n\n\n metadataTsToSeconds = function metadataTsToSeconds(timestamp, timelineStartPts, keepOriginalTimestamps) {\n return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);\n };\n\n var clock = {\n ONE_SECOND_IN_TS: ONE_SECOND_IN_TS$4,\n secondsToVideoTs: secondsToVideoTs,\n secondsToAudioTs: secondsToAudioTs,\n videoTsToSeconds: videoTsToSeconds,\n audioTsToSeconds: audioTsToSeconds,\n audioTsToVideoTs: audioTsToVideoTs,\n videoTsToAudioTs: videoTsToAudioTs,\n metadataTsToSeconds: metadataTsToSeconds\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n /**\n * Sum the `byteLength` properties of the data in each AAC frame\n */\n\n var sumFrameByteLengths = function sumFrameByteLengths(array) {\n var i,\n currentObj,\n sum = 0; // sum the byteLength's all each nal unit in the frame\n\n for (i = 0; i < array.length; i++) {\n currentObj = array[i];\n sum += currentObj.data.byteLength;\n }\n\n return sum;\n }; // Possibly pad (prefix) the audio track with silence if appending this track\n // would lead to the introduction of a gap in the audio buffer\n\n\n var prefixWithSilence = function prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime) {\n var baseMediaDecodeTimeTs,\n frameDuration = 0,\n audioGapDuration = 0,\n audioFillFrameCount = 0,\n audioFillDuration = 0,\n silentFrame,\n i,\n firstFrame;\n\n if (!frames.length) {\n return;\n }\n\n baseMediaDecodeTimeTs = clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); // determine frame clock duration based on sample rate, round up to avoid overfills\n\n frameDuration = Math.ceil(clock.ONE_SECOND_IN_TS / (track.samplerate / 1024));\n\n if (audioAppendStartTs && videoBaseMediaDecodeTime) {\n // insert the shortest possible amount (audio gap or audio to video gap)\n audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); // number of full frames in the audio gap\n\n audioFillFrameCount = Math.floor(audioGapDuration / frameDuration);\n audioFillDuration = audioFillFrameCount * frameDuration;\n } // don't attempt to fill gaps smaller than a single frame or larger\n // than a half second\n\n\n if (audioFillFrameCount < 1 || audioFillDuration > clock.ONE_SECOND_IN_TS / 2) {\n return;\n }\n\n silentFrame = silence_1()[track.samplerate];\n\n if (!silentFrame) {\n // we don't have a silent frame pregenerated for the sample rate, so use a frame\n // from the content instead\n silentFrame = frames[0].data;\n }\n\n for (i = 0; i < audioFillFrameCount; i++) {\n firstFrame = frames[0];\n frames.splice(0, 0, {\n data: silentFrame,\n dts: firstFrame.dts - frameDuration,\n pts: firstFrame.pts - frameDuration\n });\n }\n\n track.baseMediaDecodeTime -= Math.floor(clock.videoTsToAudioTs(audioFillDuration, track.samplerate));\n return audioFillDuration;\n }; // If the audio segment extends before the earliest allowed dts\n // value, remove AAC frames until starts at or after the earliest\n // allowed DTS so that we don't end up with a negative baseMedia-\n // DecodeTime for the audio track\n\n\n var trimAdtsFramesByEarliestDts = function trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts) {\n if (track.minSegmentDts >= earliestAllowedDts) {\n return adtsFrames;\n } // We will need to recalculate the earliest segment Dts\n\n\n track.minSegmentDts = Infinity;\n return adtsFrames.filter(function (currentFrame) {\n // If this is an allowed frame, keep it and record it's Dts\n if (currentFrame.dts >= earliestAllowedDts) {\n track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts);\n track.minSegmentPts = track.minSegmentDts;\n return true;\n } // Otherwise, discard it\n\n\n return false;\n });\n }; // generate the track's raw mdat data from an array of frames\n\n\n var generateSampleTable = function generateSampleTable(frames) {\n var i,\n currentFrame,\n samples = [];\n\n for (i = 0; i < frames.length; i++) {\n currentFrame = frames[i];\n samples.push({\n size: currentFrame.data.byteLength,\n duration: 1024 // For AAC audio, all samples contain 1024 samples\n\n });\n }\n\n return samples;\n }; // generate the track's sample table from an array of frames\n\n\n var concatenateFrameData = function concatenateFrameData(frames) {\n var i,\n currentFrame,\n dataOffset = 0,\n data = new Uint8Array(sumFrameByteLengths(frames));\n\n for (i = 0; i < frames.length; i++) {\n currentFrame = frames[i];\n data.set(currentFrame.data, dataOffset);\n dataOffset += currentFrame.data.byteLength;\n }\n\n return data;\n };\n\n var audioFrameUtils = {\n prefixWithSilence: prefixWithSilence,\n trimAdtsFramesByEarliestDts: trimAdtsFramesByEarliestDts,\n generateSampleTable: generateSampleTable,\n concatenateFrameData: concatenateFrameData\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var ONE_SECOND_IN_TS$3 = clock.ONE_SECOND_IN_TS;\n /**\n * Store information about the start and end of the track and the\n * duration for each frame/sample we process in order to calculate\n * the baseMediaDecodeTime\n */\n\n var collectDtsInfo = function collectDtsInfo(track, data) {\n if (typeof data.pts === 'number') {\n if (track.timelineStartInfo.pts === undefined) {\n track.timelineStartInfo.pts = data.pts;\n }\n\n if (track.minSegmentPts === undefined) {\n track.minSegmentPts = data.pts;\n } else {\n track.minSegmentPts = Math.min(track.minSegmentPts, data.pts);\n }\n\n if (track.maxSegmentPts === undefined) {\n track.maxSegmentPts = data.pts;\n } else {\n track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts);\n }\n }\n\n if (typeof data.dts === 'number') {\n if (track.timelineStartInfo.dts === undefined) {\n track.timelineStartInfo.dts = data.dts;\n }\n\n if (track.minSegmentDts === undefined) {\n track.minSegmentDts = data.dts;\n } else {\n track.minSegmentDts = Math.min(track.minSegmentDts, data.dts);\n }\n\n if (track.maxSegmentDts === undefined) {\n track.maxSegmentDts = data.dts;\n } else {\n track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts);\n }\n }\n };\n /**\n * Clear values used to calculate the baseMediaDecodeTime between\n * tracks\n */\n\n\n var clearDtsInfo = function clearDtsInfo(track) {\n delete track.minSegmentDts;\n delete track.maxSegmentDts;\n delete track.minSegmentPts;\n delete track.maxSegmentPts;\n };\n /**\n * Calculate the track's baseMediaDecodeTime based on the earliest\n * DTS the transmuxer has ever seen and the minimum DTS for the\n * current track\n * @param track {object} track metadata configuration\n * @param keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at 0.\n */\n\n\n var calculateTrackBaseMediaDecodeTime = function calculateTrackBaseMediaDecodeTime(track, keepOriginalTimestamps) {\n var baseMediaDecodeTime,\n scale,\n minSegmentDts = track.minSegmentDts; // Optionally adjust the time so the first segment starts at zero.\n\n if (!keepOriginalTimestamps) {\n minSegmentDts -= track.timelineStartInfo.dts;\n } // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where\n // we want the start of the first segment to be placed\n\n\n baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; // Add to that the distance this segment is from the very first\n\n baseMediaDecodeTime += minSegmentDts; // baseMediaDecodeTime must not become negative\n\n baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime);\n\n if (track.type === 'audio') {\n // Audio has a different clock equal to the sampling_rate so we need to\n // scale the PTS values into the clock rate of the track\n scale = track.samplerate / ONE_SECOND_IN_TS$3;\n baseMediaDecodeTime *= scale;\n baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);\n }\n\n return baseMediaDecodeTime;\n };\n\n var trackDecodeInfo = {\n clearDtsInfo: clearDtsInfo,\n calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime,\n collectDtsInfo: collectDtsInfo\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Reads in-band caption information from a video elementary\n * stream. Captions must follow the CEA-708 standard for injection\n * into an MPEG-2 transport streams.\n * @see https://en.wikipedia.org/wiki/CEA-708\n * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n */\n // payload type field to indicate how they are to be\n // interpreted. CEAS-708 caption content is always transmitted with\n // payload type 0x04.\n\n var USER_DATA_REGISTERED_ITU_T_T35 = 4,\n RBSP_TRAILING_BITS = 128;\n /**\n * Parse a supplemental enhancement information (SEI) NAL unit.\n * Stops parsing once a message of type ITU T T35 has been found.\n *\n * @param bytes {Uint8Array} the bytes of a SEI NAL unit\n * @return {object} the parsed SEI payload\n * @see Rec. ITU-T H.264, 7.3.2.3.1\n */\n\n var parseSei = function parseSei(bytes) {\n var i = 0,\n result = {\n payloadType: -1,\n payloadSize: 0\n },\n payloadType = 0,\n payloadSize = 0; // go through the sei_rbsp parsing each each individual sei_message\n\n while (i < bytes.byteLength) {\n // stop once we have hit the end of the sei_rbsp\n if (bytes[i] === RBSP_TRAILING_BITS) {\n break;\n } // Parse payload type\n\n\n while (bytes[i] === 0xFF) {\n payloadType += 255;\n i++;\n }\n\n payloadType += bytes[i++]; // Parse payload size\n\n while (bytes[i] === 0xFF) {\n payloadSize += 255;\n i++;\n }\n\n payloadSize += bytes[i++]; // this sei_message is a 608/708 caption so save it and break\n // there can only ever be one caption message in a frame's sei\n\n if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {\n var userIdentifier = String.fromCharCode(bytes[i + 3], bytes[i + 4], bytes[i + 5], bytes[i + 6]);\n\n if (userIdentifier === 'GA94') {\n result.payloadType = payloadType;\n result.payloadSize = payloadSize;\n result.payload = bytes.subarray(i, i + payloadSize);\n break;\n } else {\n result.payload = void 0;\n }\n } // skip the payload and parse the next message\n\n\n i += payloadSize;\n payloadType = 0;\n payloadSize = 0;\n }\n\n return result;\n }; // see ANSI/SCTE 128-1 (2013), section 8.1\n\n\n var parseUserData = function parseUserData(sei) {\n // itu_t_t35_contry_code must be 181 (United States) for\n // captions\n if (sei.payload[0] !== 181) {\n return null;\n } // itu_t_t35_provider_code should be 49 (ATSC) for captions\n\n\n if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) {\n return null;\n } // the user_identifier should be \"GA94\" to indicate ATSC1 data\n\n\n if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') {\n return null;\n } // finally, user_data_type_code should be 0x03 for caption data\n\n\n if (sei.payload[7] !== 0x03) {\n return null;\n } // return the user_data_type_structure and strip the trailing\n // marker bits\n\n\n return sei.payload.subarray(8, sei.payload.length - 1);\n }; // see CEA-708-D, section 4.4\n\n\n var parseCaptionPackets = function parseCaptionPackets(pts, userData) {\n var results = [],\n i,\n count,\n offset,\n data; // if this is just filler, return immediately\n\n if (!(userData[0] & 0x40)) {\n return results;\n } // parse out the cc_data_1 and cc_data_2 fields\n\n\n count = userData[0] & 0x1f;\n\n for (i = 0; i < count; i++) {\n offset = i * 3;\n data = {\n type: userData[offset + 2] & 0x03,\n pts: pts\n }; // capture cc data when cc_valid is 1\n\n if (userData[offset + 2] & 0x04) {\n data.ccData = userData[offset + 3] << 8 | userData[offset + 4];\n results.push(data);\n }\n }\n\n return results;\n };\n\n var discardEmulationPreventionBytes$1 = function discardEmulationPreventionBytes(data) {\n var length = data.byteLength,\n emulationPreventionBytesPositions = [],\n i = 1,\n newLength,\n newData; // Find all `Emulation Prevention Bytes`\n\n while (i < length - 2) {\n if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n emulationPreventionBytesPositions.push(i + 2);\n i += 2;\n } else {\n i++;\n }\n } // If no Emulation Prevention Bytes were found just return the original\n // array\n\n\n if (emulationPreventionBytesPositions.length === 0) {\n return data;\n } // Create a new array to hold the NAL unit data\n\n\n newLength = length - emulationPreventionBytesPositions.length;\n newData = new Uint8Array(newLength);\n var sourceIndex = 0;\n\n for (i = 0; i < newLength; sourceIndex++, i++) {\n if (sourceIndex === emulationPreventionBytesPositions[0]) {\n // Skip this byte\n sourceIndex++; // Remove this position index\n\n emulationPreventionBytesPositions.shift();\n }\n\n newData[i] = data[sourceIndex];\n }\n\n return newData;\n }; // exports\n\n\n var captionPacketParser = {\n parseSei: parseSei,\n parseUserData: parseUserData,\n parseCaptionPackets: parseCaptionPackets,\n discardEmulationPreventionBytes: discardEmulationPreventionBytes$1,\n USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35\n }; // Link To Transport\n // -----------------\n\n var CaptionStream$1 = function CaptionStream(options) {\n options = options || {};\n CaptionStream.prototype.init.call(this); // parse708captions flag, default to true\n\n this.parse708captions_ = typeof options.parse708captions === 'boolean' ? options.parse708captions : true;\n this.captionPackets_ = [];\n this.ccStreams_ = [new Cea608Stream(0, 0), // eslint-disable-line no-use-before-define\n new Cea608Stream(0, 1), // eslint-disable-line no-use-before-define\n new Cea608Stream(1, 0), // eslint-disable-line no-use-before-define\n new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define\n ];\n\n if (this.parse708captions_) {\n this.cc708Stream_ = new Cea708Stream({\n captionServices: options.captionServices\n }); // eslint-disable-line no-use-before-define\n }\n\n this.reset(); // forward data and done events from CCs to this CaptionStream\n\n this.ccStreams_.forEach(function (cc) {\n cc.on('data', this.trigger.bind(this, 'data'));\n cc.on('partialdone', this.trigger.bind(this, 'partialdone'));\n cc.on('done', this.trigger.bind(this, 'done'));\n }, this);\n\n if (this.parse708captions_) {\n this.cc708Stream_.on('data', this.trigger.bind(this, 'data'));\n this.cc708Stream_.on('partialdone', this.trigger.bind(this, 'partialdone'));\n this.cc708Stream_.on('done', this.trigger.bind(this, 'done'));\n }\n };\n\n CaptionStream$1.prototype = new stream();\n\n CaptionStream$1.prototype.push = function (event) {\n var sei, userData, newCaptionPackets; // only examine SEI NALs\n\n if (event.nalUnitType !== 'sei_rbsp') {\n return;\n } // parse the sei\n\n\n sei = captionPacketParser.parseSei(event.escapedRBSP); // no payload data, skip\n\n if (!sei.payload) {\n return;\n } // ignore everything but user_data_registered_itu_t_t35\n\n\n if (sei.payloadType !== captionPacketParser.USER_DATA_REGISTERED_ITU_T_T35) {\n return;\n } // parse out the user data payload\n\n\n userData = captionPacketParser.parseUserData(sei); // ignore unrecognized userData\n\n if (!userData) {\n return;\n } // Sometimes, the same segment # will be downloaded twice. To stop the\n // caption data from being processed twice, we track the latest dts we've\n // received and ignore everything with a dts before that. However, since\n // data for a specific dts can be split across packets on either side of\n // a segment boundary, we need to make sure we *don't* ignore the packets\n // from the *next* segment that have dts === this.latestDts_. By constantly\n // tracking the number of packets received with dts === this.latestDts_, we\n // know how many should be ignored once we start receiving duplicates.\n\n\n if (event.dts < this.latestDts_) {\n // We've started getting older data, so set the flag.\n this.ignoreNextEqualDts_ = true;\n return;\n } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) {\n this.numSameDts_--;\n\n if (!this.numSameDts_) {\n // We've received the last duplicate packet, time to start processing again\n this.ignoreNextEqualDts_ = false;\n }\n\n return;\n } // parse out CC data packets and save them for later\n\n\n newCaptionPackets = captionPacketParser.parseCaptionPackets(event.pts, userData);\n this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets);\n\n if (this.latestDts_ !== event.dts) {\n this.numSameDts_ = 0;\n }\n\n this.numSameDts_++;\n this.latestDts_ = event.dts;\n };\n\n CaptionStream$1.prototype.flushCCStreams = function (flushType) {\n this.ccStreams_.forEach(function (cc) {\n return flushType === 'flush' ? cc.flush() : cc.partialFlush();\n }, this);\n };\n\n CaptionStream$1.prototype.flushStream = function (flushType) {\n // make sure we actually parsed captions before proceeding\n if (!this.captionPackets_.length) {\n this.flushCCStreams(flushType);\n return;\n } // In Chrome, the Array#sort function is not stable so add a\n // presortIndex that we can use to ensure we get a stable-sort\n\n\n this.captionPackets_.forEach(function (elem, idx) {\n elem.presortIndex = idx;\n }); // sort caption byte-pairs based on their PTS values\n\n this.captionPackets_.sort(function (a, b) {\n if (a.pts === b.pts) {\n return a.presortIndex - b.presortIndex;\n }\n\n return a.pts - b.pts;\n });\n this.captionPackets_.forEach(function (packet) {\n if (packet.type < 2) {\n // Dispatch packet to the right Cea608Stream\n this.dispatchCea608Packet(packet);\n } else {\n // Dispatch packet to the Cea708Stream\n this.dispatchCea708Packet(packet);\n }\n }, this);\n this.captionPackets_.length = 0;\n this.flushCCStreams(flushType);\n };\n\n CaptionStream$1.prototype.flush = function () {\n return this.flushStream('flush');\n }; // Only called if handling partial data\n\n\n CaptionStream$1.prototype.partialFlush = function () {\n return this.flushStream('partialFlush');\n };\n\n CaptionStream$1.prototype.reset = function () {\n this.latestDts_ = null;\n this.ignoreNextEqualDts_ = false;\n this.numSameDts_ = 0;\n this.activeCea608Channel_ = [null, null];\n this.ccStreams_.forEach(function (ccStream) {\n ccStream.reset();\n });\n }; // From the CEA-608 spec:\n\n /*\n * When XDS sub-packets are interleaved with other services, the end of each sub-packet shall be followed\n * by a control pair to change to a different service. When any of the control codes from 0x10 to 0x1F is\n * used to begin a control code pair, it indicates the return to captioning or Text data. The control code pair\n * and subsequent data should then be processed according to the FCC rules. It may be necessary for the\n * line 21 data encoder to automatically insert a control code pair (i.e. RCL, RU2, RU3, RU4, RDC, or RTD)\n * to switch to captioning or Text.\n */\n // With that in mind, we ignore any data between an XDS control code and a\n // subsequent closed-captioning control code.\n\n\n CaptionStream$1.prototype.dispatchCea608Packet = function (packet) {\n // NOTE: packet.type is the CEA608 field\n if (this.setsTextOrXDSActive(packet)) {\n this.activeCea608Channel_[packet.type] = null;\n } else if (this.setsChannel1Active(packet)) {\n this.activeCea608Channel_[packet.type] = 0;\n } else if (this.setsChannel2Active(packet)) {\n this.activeCea608Channel_[packet.type] = 1;\n }\n\n if (this.activeCea608Channel_[packet.type] === null) {\n // If we haven't received anything to set the active channel, or the\n // packets are Text/XDS data, discard the data; we don't want jumbled\n // captions\n return;\n }\n\n this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);\n };\n\n CaptionStream$1.prototype.setsChannel1Active = function (packet) {\n return (packet.ccData & 0x7800) === 0x1000;\n };\n\n CaptionStream$1.prototype.setsChannel2Active = function (packet) {\n return (packet.ccData & 0x7800) === 0x1800;\n };\n\n CaptionStream$1.prototype.setsTextOrXDSActive = function (packet) {\n return (packet.ccData & 0x7100) === 0x0100 || (packet.ccData & 0x78fe) === 0x102a || (packet.ccData & 0x78fe) === 0x182a;\n };\n\n CaptionStream$1.prototype.dispatchCea708Packet = function (packet) {\n if (this.parse708captions_) {\n this.cc708Stream_.push(packet);\n }\n }; // ----------------------\n // Session to Application\n // ----------------------\n // This hash maps special and extended character codes to their\n // proper Unicode equivalent. The first one-byte key is just a\n // non-standard character code. The two-byte keys that follow are\n // the extended CEA708 character codes, along with the preceding\n // 0x10 extended character byte to distinguish these codes from\n // non-extended character codes. Every CEA708 character code that\n // is not in this object maps directly to a standard unicode\n // character code.\n // The transparent space and non-breaking transparent space are\n // technically not fully supported since there is no code to\n // make them transparent, so they have normal non-transparent\n // stand-ins.\n // The special closed caption (CC) character isn't a standard\n // unicode character, so a fairly similar unicode character was\n // chosen in it's place.\n\n\n var CHARACTER_TRANSLATION_708 = {\n 0x7f: 0x266a,\n // ♪\n 0x1020: 0x20,\n // Transparent Space\n 0x1021: 0xa0,\n // Nob-breaking Transparent Space\n 0x1025: 0x2026,\n // …\n 0x102a: 0x0160,\n // Š\n 0x102c: 0x0152,\n // Œ\n 0x1030: 0x2588,\n // █\n 0x1031: 0x2018,\n // ‘\n 0x1032: 0x2019,\n // ’\n 0x1033: 0x201c,\n // “\n 0x1034: 0x201d,\n // ”\n 0x1035: 0x2022,\n // •\n 0x1039: 0x2122,\n // ™\n 0x103a: 0x0161,\n // š\n 0x103c: 0x0153,\n // œ\n 0x103d: 0x2120,\n // ℠\n 0x103f: 0x0178,\n // Ÿ\n 0x1076: 0x215b,\n // ⅛\n 0x1077: 0x215c,\n // ⅜\n 0x1078: 0x215d,\n // ⅝\n 0x1079: 0x215e,\n // ⅞\n 0x107a: 0x23d0,\n // ⏐\n 0x107b: 0x23a4,\n // ⎤\n 0x107c: 0x23a3,\n // ⎣\n 0x107d: 0x23af,\n // ⎯\n 0x107e: 0x23a6,\n // ⎦\n 0x107f: 0x23a1,\n // ⎡\n 0x10a0: 0x3138 // ㄸ (CC char)\n\n };\n\n var get708CharFromCode = function get708CharFromCode(code) {\n var newCode = CHARACTER_TRANSLATION_708[code] || code;\n\n if (code & 0x1000 && code === newCode) {\n // Invalid extended code\n return '';\n }\n\n return String.fromCharCode(newCode);\n };\n\n var within708TextBlock = function within708TextBlock(b) {\n return 0x20 <= b && b <= 0x7f || 0xa0 <= b && b <= 0xff;\n };\n\n var Cea708Window = function Cea708Window(windowNum) {\n this.windowNum = windowNum;\n this.reset();\n };\n\n Cea708Window.prototype.reset = function () {\n this.clearText();\n this.pendingNewLine = false;\n this.winAttr = {};\n this.penAttr = {};\n this.penLoc = {};\n this.penColor = {}; // These default values are arbitrary,\n // defineWindow will usually override them\n\n this.visible = 0;\n this.rowLock = 0;\n this.columnLock = 0;\n this.priority = 0;\n this.relativePositioning = 0;\n this.anchorVertical = 0;\n this.anchorHorizontal = 0;\n this.anchorPoint = 0;\n this.rowCount = 1;\n this.virtualRowCount = this.rowCount + 1;\n this.columnCount = 41;\n this.windowStyle = 0;\n this.penStyle = 0;\n };\n\n Cea708Window.prototype.getText = function () {\n return this.rows.join('\\n');\n };\n\n Cea708Window.prototype.clearText = function () {\n this.rows = [''];\n this.rowIdx = 0;\n };\n\n Cea708Window.prototype.newLine = function (pts) {\n if (this.rows.length >= this.virtualRowCount && typeof this.beforeRowOverflow === 'function') {\n this.beforeRowOverflow(pts);\n }\n\n if (this.rows.length > 0) {\n this.rows.push('');\n this.rowIdx++;\n } // Show all virtual rows since there's no visible scrolling\n\n\n while (this.rows.length > this.virtualRowCount) {\n this.rows.shift();\n this.rowIdx--;\n }\n };\n\n Cea708Window.prototype.isEmpty = function () {\n if (this.rows.length === 0) {\n return true;\n } else if (this.rows.length === 1) {\n return this.rows[0] === '';\n }\n\n return false;\n };\n\n Cea708Window.prototype.addText = function (text) {\n this.rows[this.rowIdx] += text;\n };\n\n Cea708Window.prototype.backspace = function () {\n if (!this.isEmpty()) {\n var row = this.rows[this.rowIdx];\n this.rows[this.rowIdx] = row.substr(0, row.length - 1);\n }\n };\n\n var Cea708Service = function Cea708Service(serviceNum, encoding, stream) {\n this.serviceNum = serviceNum;\n this.text = '';\n this.currentWindow = new Cea708Window(-1);\n this.windows = [];\n this.stream = stream; // Try to setup a TextDecoder if an `encoding` value was provided\n\n if (typeof encoding === 'string') {\n this.createTextDecoder(encoding);\n }\n };\n /**\n * Initialize service windows\n * Must be run before service use\n *\n * @param {Integer} pts PTS value\n * @param {Function} beforeRowOverflow Function to execute before row overflow of a window\n */\n\n\n Cea708Service.prototype.init = function (pts, beforeRowOverflow) {\n this.startPts = pts;\n\n for (var win = 0; win < 8; win++) {\n this.windows[win] = new Cea708Window(win);\n\n if (typeof beforeRowOverflow === 'function') {\n this.windows[win].beforeRowOverflow = beforeRowOverflow;\n }\n }\n };\n /**\n * Set current window of service to be affected by commands\n *\n * @param {Integer} windowNum Window number\n */\n\n\n Cea708Service.prototype.setCurrentWindow = function (windowNum) {\n this.currentWindow = this.windows[windowNum];\n };\n /**\n * Try to create a TextDecoder if it is natively supported\n */\n\n\n Cea708Service.prototype.createTextDecoder = function (encoding) {\n if (typeof TextDecoder === 'undefined') {\n this.stream.trigger('log', {\n level: 'warn',\n message: 'The `encoding` option is unsupported without TextDecoder support'\n });\n } else {\n try {\n this.textDecoder_ = new TextDecoder(encoding);\n } catch (error) {\n this.stream.trigger('log', {\n level: 'warn',\n message: 'TextDecoder could not be created with ' + encoding + ' encoding. ' + error\n });\n }\n }\n };\n\n var Cea708Stream = function Cea708Stream(options) {\n options = options || {};\n Cea708Stream.prototype.init.call(this);\n var self = this;\n var captionServices = options.captionServices || {};\n var captionServiceEncodings = {};\n var serviceProps; // Get service encodings from captionServices option block\n\n Object.keys(captionServices).forEach(function (serviceName) {\n serviceProps = captionServices[serviceName];\n\n if (/^SERVICE/.test(serviceName)) {\n captionServiceEncodings[serviceName] = serviceProps.encoding;\n }\n });\n this.serviceEncodings = captionServiceEncodings;\n this.current708Packet = null;\n this.services = {};\n\n this.push = function (packet) {\n if (packet.type === 3) {\n // 708 packet start\n self.new708Packet();\n self.add708Bytes(packet);\n } else {\n if (self.current708Packet === null) {\n // This should only happen at the start of a file if there's no packet start.\n self.new708Packet();\n }\n\n self.add708Bytes(packet);\n }\n };\n };\n\n Cea708Stream.prototype = new stream();\n /**\n * Push current 708 packet, create new 708 packet.\n */\n\n Cea708Stream.prototype.new708Packet = function () {\n if (this.current708Packet !== null) {\n this.push708Packet();\n }\n\n this.current708Packet = {\n data: [],\n ptsVals: []\n };\n };\n /**\n * Add pts and both bytes from packet into current 708 packet.\n */\n\n\n Cea708Stream.prototype.add708Bytes = function (packet) {\n var data = packet.ccData;\n var byte0 = data >>> 8;\n var byte1 = data & 0xff; // I would just keep a list of packets instead of bytes, but it isn't clear in the spec\n // that service blocks will always line up with byte pairs.\n\n this.current708Packet.ptsVals.push(packet.pts);\n this.current708Packet.data.push(byte0);\n this.current708Packet.data.push(byte1);\n };\n /**\n * Parse completed 708 packet into service blocks and push each service block.\n */\n\n\n Cea708Stream.prototype.push708Packet = function () {\n var packet708 = this.current708Packet;\n var packetData = packet708.data;\n var serviceNum = null;\n var blockSize = null;\n var i = 0;\n var b = packetData[i++];\n packet708.seq = b >> 6;\n packet708.sizeCode = b & 0x3f; // 0b00111111;\n\n for (; i < packetData.length; i++) {\n b = packetData[i++];\n serviceNum = b >> 5;\n blockSize = b & 0x1f; // 0b00011111\n\n if (serviceNum === 7 && blockSize > 0) {\n // Extended service num\n b = packetData[i++];\n serviceNum = b;\n }\n\n this.pushServiceBlock(serviceNum, i, blockSize);\n\n if (blockSize > 0) {\n i += blockSize - 1;\n }\n }\n };\n /**\n * Parse service block, execute commands, read text.\n *\n * Note: While many of these commands serve important purposes,\n * many others just parse out the parameters or attributes, but\n * nothing is done with them because this is not a full and complete\n * implementation of the entire 708 spec.\n *\n * @param {Integer} serviceNum Service number\n * @param {Integer} start Start index of the 708 packet data\n * @param {Integer} size Block size\n */\n\n\n Cea708Stream.prototype.pushServiceBlock = function (serviceNum, start, size) {\n var b;\n var i = start;\n var packetData = this.current708Packet.data;\n var service = this.services[serviceNum];\n\n if (!service) {\n service = this.initService(serviceNum, i);\n }\n\n for (; i < start + size && i < packetData.length; i++) {\n b = packetData[i];\n\n if (within708TextBlock(b)) {\n i = this.handleText(i, service);\n } else if (b === 0x18) {\n i = this.multiByteCharacter(i, service);\n } else if (b === 0x10) {\n i = this.extendedCommands(i, service);\n } else if (0x80 <= b && b <= 0x87) {\n i = this.setCurrentWindow(i, service);\n } else if (0x98 <= b && b <= 0x9f) {\n i = this.defineWindow(i, service);\n } else if (b === 0x88) {\n i = this.clearWindows(i, service);\n } else if (b === 0x8c) {\n i = this.deleteWindows(i, service);\n } else if (b === 0x89) {\n i = this.displayWindows(i, service);\n } else if (b === 0x8a) {\n i = this.hideWindows(i, service);\n } else if (b === 0x8b) {\n i = this.toggleWindows(i, service);\n } else if (b === 0x97) {\n i = this.setWindowAttributes(i, service);\n } else if (b === 0x90) {\n i = this.setPenAttributes(i, service);\n } else if (b === 0x91) {\n i = this.setPenColor(i, service);\n } else if (b === 0x92) {\n i = this.setPenLocation(i, service);\n } else if (b === 0x8f) {\n service = this.reset(i, service);\n } else if (b === 0x08) {\n // BS: Backspace\n service.currentWindow.backspace();\n } else if (b === 0x0c) {\n // FF: Form feed\n service.currentWindow.clearText();\n } else if (b === 0x0d) {\n // CR: Carriage return\n service.currentWindow.pendingNewLine = true;\n } else if (b === 0x0e) {\n // HCR: Horizontal carriage return\n service.currentWindow.clearText();\n } else if (b === 0x8d) {\n // DLY: Delay, nothing to do\n i++;\n } else ;\n }\n };\n /**\n * Execute an extended command\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.extendedCommands = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[++i];\n\n if (within708TextBlock(b)) {\n i = this.handleText(i, service, {\n isExtended: true\n });\n }\n\n return i;\n };\n /**\n * Get PTS value of a given byte index\n *\n * @param {Integer} byteIndex Index of the byte\n * @return {Integer} PTS\n */\n\n\n Cea708Stream.prototype.getPts = function (byteIndex) {\n // There's 1 pts value per 2 bytes\n return this.current708Packet.ptsVals[Math.floor(byteIndex / 2)];\n };\n /**\n * Initializes a service\n *\n * @param {Integer} serviceNum Service number\n * @return {Service} Initialized service object\n */\n\n\n Cea708Stream.prototype.initService = function (serviceNum, i) {\n var serviceName = 'SERVICE' + serviceNum;\n var self = this;\n var serviceName;\n var encoding;\n\n if (serviceName in this.serviceEncodings) {\n encoding = this.serviceEncodings[serviceName];\n }\n\n this.services[serviceNum] = new Cea708Service(serviceNum, encoding, self);\n this.services[serviceNum].init(this.getPts(i), function (pts) {\n self.flushDisplayed(pts, self.services[serviceNum]);\n });\n return this.services[serviceNum];\n };\n /**\n * Execute text writing to current window\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.handleText = function (i, service, options) {\n var isExtended = options && options.isExtended;\n var isMultiByte = options && options.isMultiByte;\n var packetData = this.current708Packet.data;\n var extended = isExtended ? 0x1000 : 0x0000;\n var currentByte = packetData[i];\n var nextByte = packetData[i + 1];\n var win = service.currentWindow;\n\n var _char;\n\n var charCodeArray; // Use the TextDecoder if one was created for this service\n\n if (service.textDecoder_ && !isExtended) {\n if (isMultiByte) {\n charCodeArray = [currentByte, nextByte];\n i++;\n } else {\n charCodeArray = [currentByte];\n }\n\n _char = service.textDecoder_.decode(new Uint8Array(charCodeArray));\n } else {\n _char = get708CharFromCode(extended | currentByte);\n }\n\n if (win.pendingNewLine && !win.isEmpty()) {\n win.newLine(this.getPts(i));\n }\n\n win.pendingNewLine = false;\n win.addText(_char);\n return i;\n };\n /**\n * Handle decoding of multibyte character\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.multiByteCharacter = function (i, service) {\n var packetData = this.current708Packet.data;\n var firstByte = packetData[i + 1];\n var secondByte = packetData[i + 2];\n\n if (within708TextBlock(firstByte) && within708TextBlock(secondByte)) {\n i = this.handleText(++i, service, {\n isMultiByte: true\n });\n }\n\n return i;\n };\n /**\n * Parse and execute the CW# command.\n *\n * Set the current window.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.setCurrentWindow = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[i];\n var windowNum = b & 0x07;\n service.setCurrentWindow(windowNum);\n return i;\n };\n /**\n * Parse and execute the DF# command.\n *\n * Define a window and set it as the current window.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.defineWindow = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[i];\n var windowNum = b & 0x07;\n service.setCurrentWindow(windowNum);\n var win = service.currentWindow;\n b = packetData[++i];\n win.visible = (b & 0x20) >> 5; // v\n\n win.rowLock = (b & 0x10) >> 4; // rl\n\n win.columnLock = (b & 0x08) >> 3; // cl\n\n win.priority = b & 0x07; // p\n\n b = packetData[++i];\n win.relativePositioning = (b & 0x80) >> 7; // rp\n\n win.anchorVertical = b & 0x7f; // av\n\n b = packetData[++i];\n win.anchorHorizontal = b; // ah\n\n b = packetData[++i];\n win.anchorPoint = (b & 0xf0) >> 4; // ap\n\n win.rowCount = b & 0x0f; // rc\n\n b = packetData[++i];\n win.columnCount = b & 0x3f; // cc\n\n b = packetData[++i];\n win.windowStyle = (b & 0x38) >> 3; // ws\n\n win.penStyle = b & 0x07; // ps\n // The spec says there are (rowCount+1) \"virtual rows\"\n\n win.virtualRowCount = win.rowCount + 1;\n return i;\n };\n /**\n * Parse and execute the SWA command.\n *\n * Set attributes of the current window.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.setWindowAttributes = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[i];\n var winAttr = service.currentWindow.winAttr;\n b = packetData[++i];\n winAttr.fillOpacity = (b & 0xc0) >> 6; // fo\n\n winAttr.fillRed = (b & 0x30) >> 4; // fr\n\n winAttr.fillGreen = (b & 0x0c) >> 2; // fg\n\n winAttr.fillBlue = b & 0x03; // fb\n\n b = packetData[++i];\n winAttr.borderType = (b & 0xc0) >> 6; // bt\n\n winAttr.borderRed = (b & 0x30) >> 4; // br\n\n winAttr.borderGreen = (b & 0x0c) >> 2; // bg\n\n winAttr.borderBlue = b & 0x03; // bb\n\n b = packetData[++i];\n winAttr.borderType += (b & 0x80) >> 5; // bt\n\n winAttr.wordWrap = (b & 0x40) >> 6; // ww\n\n winAttr.printDirection = (b & 0x30) >> 4; // pd\n\n winAttr.scrollDirection = (b & 0x0c) >> 2; // sd\n\n winAttr.justify = b & 0x03; // j\n\n b = packetData[++i];\n winAttr.effectSpeed = (b & 0xf0) >> 4; // es\n\n winAttr.effectDirection = (b & 0x0c) >> 2; // ed\n\n winAttr.displayEffect = b & 0x03; // de\n\n return i;\n };\n /**\n * Gather text from all displayed windows and push a caption to output.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n */\n\n\n Cea708Stream.prototype.flushDisplayed = function (pts, service) {\n var displayedText = []; // TODO: Positioning not supported, displaying multiple windows will not necessarily\n // display text in the correct order, but sample files so far have not shown any issue.\n\n for (var winId = 0; winId < 8; winId++) {\n if (service.windows[winId].visible && !service.windows[winId].isEmpty()) {\n displayedText.push(service.windows[winId].getText());\n }\n }\n\n service.endPts = pts;\n service.text = displayedText.join('\\n\\n');\n this.pushCaption(service);\n service.startPts = pts;\n };\n /**\n * Push a caption to output if the caption contains text.\n *\n * @param {Service} service The service object to be affected\n */\n\n\n Cea708Stream.prototype.pushCaption = function (service) {\n if (service.text !== '') {\n this.trigger('data', {\n startPts: service.startPts,\n endPts: service.endPts,\n text: service.text,\n stream: 'cc708_' + service.serviceNum\n });\n service.text = '';\n service.startPts = service.endPts;\n }\n };\n /**\n * Parse and execute the DSW command.\n *\n * Set visible property of windows based on the parsed bitmask.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.displayWindows = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[++i];\n var pts = this.getPts(i);\n this.flushDisplayed(pts, service);\n\n for (var winId = 0; winId < 8; winId++) {\n if (b & 0x01 << winId) {\n service.windows[winId].visible = 1;\n }\n }\n\n return i;\n };\n /**\n * Parse and execute the HDW command.\n *\n * Set visible property of windows based on the parsed bitmask.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.hideWindows = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[++i];\n var pts = this.getPts(i);\n this.flushDisplayed(pts, service);\n\n for (var winId = 0; winId < 8; winId++) {\n if (b & 0x01 << winId) {\n service.windows[winId].visible = 0;\n }\n }\n\n return i;\n };\n /**\n * Parse and execute the TGW command.\n *\n * Set visible property of windows based on the parsed bitmask.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.toggleWindows = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[++i];\n var pts = this.getPts(i);\n this.flushDisplayed(pts, service);\n\n for (var winId = 0; winId < 8; winId++) {\n if (b & 0x01 << winId) {\n service.windows[winId].visible ^= 1;\n }\n }\n\n return i;\n };\n /**\n * Parse and execute the CLW command.\n *\n * Clear text of windows based on the parsed bitmask.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.clearWindows = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[++i];\n var pts = this.getPts(i);\n this.flushDisplayed(pts, service);\n\n for (var winId = 0; winId < 8; winId++) {\n if (b & 0x01 << winId) {\n service.windows[winId].clearText();\n }\n }\n\n return i;\n };\n /**\n * Parse and execute the DLW command.\n *\n * Re-initialize windows based on the parsed bitmask.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.deleteWindows = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[++i];\n var pts = this.getPts(i);\n this.flushDisplayed(pts, service);\n\n for (var winId = 0; winId < 8; winId++) {\n if (b & 0x01 << winId) {\n service.windows[winId].reset();\n }\n }\n\n return i;\n };\n /**\n * Parse and execute the SPA command.\n *\n * Set pen attributes of the current window.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.setPenAttributes = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[i];\n var penAttr = service.currentWindow.penAttr;\n b = packetData[++i];\n penAttr.textTag = (b & 0xf0) >> 4; // tt\n\n penAttr.offset = (b & 0x0c) >> 2; // o\n\n penAttr.penSize = b & 0x03; // s\n\n b = packetData[++i];\n penAttr.italics = (b & 0x80) >> 7; // i\n\n penAttr.underline = (b & 0x40) >> 6; // u\n\n penAttr.edgeType = (b & 0x38) >> 3; // et\n\n penAttr.fontStyle = b & 0x07; // fs\n\n return i;\n };\n /**\n * Parse and execute the SPC command.\n *\n * Set pen color of the current window.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.setPenColor = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[i];\n var penColor = service.currentWindow.penColor;\n b = packetData[++i];\n penColor.fgOpacity = (b & 0xc0) >> 6; // fo\n\n penColor.fgRed = (b & 0x30) >> 4; // fr\n\n penColor.fgGreen = (b & 0x0c) >> 2; // fg\n\n penColor.fgBlue = b & 0x03; // fb\n\n b = packetData[++i];\n penColor.bgOpacity = (b & 0xc0) >> 6; // bo\n\n penColor.bgRed = (b & 0x30) >> 4; // br\n\n penColor.bgGreen = (b & 0x0c) >> 2; // bg\n\n penColor.bgBlue = b & 0x03; // bb\n\n b = packetData[++i];\n penColor.edgeRed = (b & 0x30) >> 4; // er\n\n penColor.edgeGreen = (b & 0x0c) >> 2; // eg\n\n penColor.edgeBlue = b & 0x03; // eb\n\n return i;\n };\n /**\n * Parse and execute the SPL command.\n *\n * Set pen location of the current window.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Integer} New index after parsing\n */\n\n\n Cea708Stream.prototype.setPenLocation = function (i, service) {\n var packetData = this.current708Packet.data;\n var b = packetData[i];\n var penLoc = service.currentWindow.penLoc; // Positioning isn't really supported at the moment, so this essentially just inserts a linebreak\n\n service.currentWindow.pendingNewLine = true;\n b = packetData[++i];\n penLoc.row = b & 0x0f; // r\n\n b = packetData[++i];\n penLoc.column = b & 0x3f; // c\n\n return i;\n };\n /**\n * Execute the RST command.\n *\n * Reset service to a clean slate. Re-initialize.\n *\n * @param {Integer} i Current index in the 708 packet\n * @param {Service} service The service object to be affected\n * @return {Service} Re-initialized service\n */\n\n\n Cea708Stream.prototype.reset = function (i, service) {\n var pts = this.getPts(i);\n this.flushDisplayed(pts, service);\n return this.initService(service.serviceNum, i);\n }; // This hash maps non-ASCII, special, and extended character codes to their\n // proper Unicode equivalent. The first keys that are only a single byte\n // are the non-standard ASCII characters, which simply map the CEA608 byte\n // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608\n // character codes, but have their MSB bitmasked with 0x03 so that a lookup\n // can be performed regardless of the field and data channel on which the\n // character code was received.\n\n\n var CHARACTER_TRANSLATION = {\n 0x2a: 0xe1,\n // á\n 0x5c: 0xe9,\n // é\n 0x5e: 0xed,\n // í\n 0x5f: 0xf3,\n // ó\n 0x60: 0xfa,\n // ú\n 0x7b: 0xe7,\n // ç\n 0x7c: 0xf7,\n // ÷\n 0x7d: 0xd1,\n // Ñ\n 0x7e: 0xf1,\n // ñ\n 0x7f: 0x2588,\n // █\n 0x0130: 0xae,\n // ®\n 0x0131: 0xb0,\n // °\n 0x0132: 0xbd,\n // ½\n 0x0133: 0xbf,\n // ¿\n 0x0134: 0x2122,\n // ™\n 0x0135: 0xa2,\n // ¢\n 0x0136: 0xa3,\n // £\n 0x0137: 0x266a,\n // ♪\n 0x0138: 0xe0,\n // à\n 0x0139: 0xa0,\n //\n 0x013a: 0xe8,\n // è\n 0x013b: 0xe2,\n // â\n 0x013c: 0xea,\n // ê\n 0x013d: 0xee,\n // î\n 0x013e: 0xf4,\n // ô\n 0x013f: 0xfb,\n // û\n 0x0220: 0xc1,\n // Á\n 0x0221: 0xc9,\n // É\n 0x0222: 0xd3,\n // Ó\n 0x0223: 0xda,\n // Ú\n 0x0224: 0xdc,\n // Ü\n 0x0225: 0xfc,\n // ü\n 0x0226: 0x2018,\n // ‘\n 0x0227: 0xa1,\n // ¡\n 0x0228: 0x2a,\n // *\n 0x0229: 0x27,\n // '\n 0x022a: 0x2014,\n // —\n 0x022b: 0xa9,\n // ©\n 0x022c: 0x2120,\n // ℠\n 0x022d: 0x2022,\n // •\n 0x022e: 0x201c,\n // “\n 0x022f: 0x201d,\n // ”\n 0x0230: 0xc0,\n // À\n 0x0231: 0xc2,\n // Â\n 0x0232: 0xc7,\n // Ç\n 0x0233: 0xc8,\n // È\n 0x0234: 0xca,\n // Ê\n 0x0235: 0xcb,\n // Ë\n 0x0236: 0xeb,\n // ë\n 0x0237: 0xce,\n // Î\n 0x0238: 0xcf,\n // Ï\n 0x0239: 0xef,\n // ï\n 0x023a: 0xd4,\n // Ô\n 0x023b: 0xd9,\n // Ù\n 0x023c: 0xf9,\n // ù\n 0x023d: 0xdb,\n // Û\n 0x023e: 0xab,\n // «\n 0x023f: 0xbb,\n // »\n 0x0320: 0xc3,\n // Ã\n 0x0321: 0xe3,\n // ã\n 0x0322: 0xcd,\n // Í\n 0x0323: 0xcc,\n // Ì\n 0x0324: 0xec,\n // ì\n 0x0325: 0xd2,\n // Ò\n 0x0326: 0xf2,\n // ò\n 0x0327: 0xd5,\n // Õ\n 0x0328: 0xf5,\n // õ\n 0x0329: 0x7b,\n // {\n 0x032a: 0x7d,\n // }\n 0x032b: 0x5c,\n // \\\n 0x032c: 0x5e,\n // ^\n 0x032d: 0x5f,\n // _\n 0x032e: 0x7c,\n // |\n 0x032f: 0x7e,\n // ~\n 0x0330: 0xc4,\n // Ä\n 0x0331: 0xe4,\n // ä\n 0x0332: 0xd6,\n // Ö\n 0x0333: 0xf6,\n // ö\n 0x0334: 0xdf,\n // ß\n 0x0335: 0xa5,\n // ¥\n 0x0336: 0xa4,\n // ¤\n 0x0337: 0x2502,\n // │\n 0x0338: 0xc5,\n // Å\n 0x0339: 0xe5,\n // å\n 0x033a: 0xd8,\n // Ø\n 0x033b: 0xf8,\n // ø\n 0x033c: 0x250c,\n // ┌\n 0x033d: 0x2510,\n // ┐\n 0x033e: 0x2514,\n // └\n 0x033f: 0x2518 // ┘\n\n };\n\n var getCharFromCode = function getCharFromCode(code) {\n if (code === null) {\n return '';\n }\n\n code = CHARACTER_TRANSLATION[code] || code;\n return String.fromCharCode(code);\n }; // the index of the last row in a CEA-608 display buffer\n\n\n var BOTTOM_ROW = 14; // This array is used for mapping PACs -> row #, since there's no way of\n // getting it through bit logic.\n\n var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; // CEA-608 captions are rendered onto a 34x15 matrix of character\n // cells. The \"bottom\" row is the last element in the outer array.\n\n var createDisplayBuffer = function createDisplayBuffer() {\n var result = [],\n i = BOTTOM_ROW + 1;\n\n while (i--) {\n result.push('');\n }\n\n return result;\n };\n\n var Cea608Stream = function Cea608Stream(field, dataChannel) {\n Cea608Stream.prototype.init.call(this);\n this.field_ = field || 0;\n this.dataChannel_ = dataChannel || 0;\n this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1);\n this.setConstants();\n this.reset();\n\n this.push = function (packet) {\n var data, swap, char0, char1, text; // remove the parity bits\n\n data = packet.ccData & 0x7f7f; // ignore duplicate control codes; the spec demands they're sent twice\n\n if (data === this.lastControlCode_) {\n this.lastControlCode_ = null;\n return;\n } // Store control codes\n\n\n if ((data & 0xf000) === 0x1000) {\n this.lastControlCode_ = data;\n } else if (data !== this.PADDING_) {\n this.lastControlCode_ = null;\n }\n\n char0 = data >>> 8;\n char1 = data & 0xff;\n\n if (data === this.PADDING_) {\n return;\n } else if (data === this.RESUME_CAPTION_LOADING_) {\n this.mode_ = 'popOn';\n } else if (data === this.END_OF_CAPTION_) {\n // If an EOC is received while in paint-on mode, the displayed caption\n // text should be swapped to non-displayed memory as if it was a pop-on\n // caption. Because of that, we should explicitly switch back to pop-on\n // mode\n this.mode_ = 'popOn';\n this.clearFormatting(packet.pts); // if a caption was being displayed, it's gone now\n\n this.flushDisplayed(packet.pts); // flip memory\n\n swap = this.displayed_;\n this.displayed_ = this.nonDisplayed_;\n this.nonDisplayed_ = swap; // start measuring the time to display the caption\n\n this.startPts_ = packet.pts;\n } else if (data === this.ROLL_UP_2_ROWS_) {\n this.rollUpRows_ = 2;\n this.setRollUp(packet.pts);\n } else if (data === this.ROLL_UP_3_ROWS_) {\n this.rollUpRows_ = 3;\n this.setRollUp(packet.pts);\n } else if (data === this.ROLL_UP_4_ROWS_) {\n this.rollUpRows_ = 4;\n this.setRollUp(packet.pts);\n } else if (data === this.CARRIAGE_RETURN_) {\n this.clearFormatting(packet.pts);\n this.flushDisplayed(packet.pts);\n this.shiftRowsUp_();\n this.startPts_ = packet.pts;\n } else if (data === this.BACKSPACE_) {\n if (this.mode_ === 'popOn') {\n this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n } else {\n this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n }\n } else if (data === this.ERASE_DISPLAYED_MEMORY_) {\n this.flushDisplayed(packet.pts);\n this.displayed_ = createDisplayBuffer();\n } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {\n this.nonDisplayed_ = createDisplayBuffer();\n } else if (data === this.RESUME_DIRECT_CAPTIONING_) {\n if (this.mode_ !== 'paintOn') {\n // NOTE: This should be removed when proper caption positioning is\n // implemented\n this.flushDisplayed(packet.pts);\n this.displayed_ = createDisplayBuffer();\n }\n\n this.mode_ = 'paintOn';\n this.startPts_ = packet.pts; // Append special characters to caption text\n } else if (this.isSpecialCharacter(char0, char1)) {\n // Bitmask char0 so that we can apply character transformations\n // regardless of field and data channel.\n // Then byte-shift to the left and OR with char1 so we can pass the\n // entire character code to `getCharFromCode`.\n char0 = (char0 & 0x03) << 8;\n text = getCharFromCode(char0 | char1);\n this[this.mode_](packet.pts, text);\n this.column_++; // Append extended characters to caption text\n } else if (this.isExtCharacter(char0, char1)) {\n // Extended characters always follow their \"non-extended\" equivalents.\n // IE if a \"è\" is desired, you'll always receive \"eè\"; non-compliant\n // decoders are supposed to drop the \"è\", while compliant decoders\n // backspace the \"e\" and insert \"è\".\n // Delete the previous character\n if (this.mode_ === 'popOn') {\n this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n } else {\n this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n } // Bitmask char0 so that we can apply character transformations\n // regardless of field and data channel.\n // Then byte-shift to the left and OR with char1 so we can pass the\n // entire character code to `getCharFromCode`.\n\n\n char0 = (char0 & 0x03) << 8;\n text = getCharFromCode(char0 | char1);\n this[this.mode_](packet.pts, text);\n this.column_++; // Process mid-row codes\n } else if (this.isMidRowCode(char0, char1)) {\n // Attributes are not additive, so clear all formatting\n this.clearFormatting(packet.pts); // According to the standard, mid-row codes\n // should be replaced with spaces, so add one now\n\n this[this.mode_](packet.pts, ' ');\n this.column_++;\n\n if ((char1 & 0xe) === 0xe) {\n this.addFormatting(packet.pts, ['i']);\n }\n\n if ((char1 & 0x1) === 0x1) {\n this.addFormatting(packet.pts, ['u']);\n } // Detect offset control codes and adjust cursor\n\n } else if (this.isOffsetControlCode(char0, char1)) {\n // Cursor position is set by indent PAC (see below) in 4-column\n // increments, with an additional offset code of 1-3 to reach any\n // of the 32 columns specified by CEA-608. So all we need to do\n // here is increment the column cursor by the given offset.\n this.column_ += char1 & 0x03; // Detect PACs (Preamble Address Codes)\n } else if (this.isPAC(char0, char1)) {\n // There's no logic for PAC -> row mapping, so we have to just\n // find the row code in an array and use its index :(\n var row = ROWS.indexOf(data & 0x1f20); // Configure the caption window if we're in roll-up mode\n\n if (this.mode_ === 'rollUp') {\n // This implies that the base row is incorrectly set.\n // As per the recommendation in CEA-608(Base Row Implementation), defer to the number\n // of roll-up rows set.\n if (row - this.rollUpRows_ + 1 < 0) {\n row = this.rollUpRows_ - 1;\n }\n\n this.setRollUp(packet.pts, row);\n }\n\n if (row !== this.row_) {\n // formatting is only persistent for current row\n this.clearFormatting(packet.pts);\n this.row_ = row;\n } // All PACs can apply underline, so detect and apply\n // (All odd-numbered second bytes set underline)\n\n\n if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) {\n this.addFormatting(packet.pts, ['u']);\n }\n\n if ((data & 0x10) === 0x10) {\n // We've got an indent level code. Each successive even number\n // increments the column cursor by 4, so we can get the desired\n // column position by bit-shifting to the right (to get n/2)\n // and multiplying by 4.\n this.column_ = ((data & 0xe) >> 1) * 4;\n }\n\n if (this.isColorPAC(char1)) {\n // it's a color code, though we only support white, which\n // can be either normal or italicized. white italics can be\n // either 0x4e or 0x6e depending on the row, so we just\n // bitwise-and with 0xe to see if italics should be turned on\n if ((char1 & 0xe) === 0xe) {\n this.addFormatting(packet.pts, ['i']);\n }\n } // We have a normal character in char0, and possibly one in char1\n\n } else if (this.isNormalChar(char0)) {\n if (char1 === 0x00) {\n char1 = null;\n }\n\n text = getCharFromCode(char0);\n text += getCharFromCode(char1);\n this[this.mode_](packet.pts, text);\n this.column_ += text.length;\n } // finish data processing\n\n };\n };\n\n Cea608Stream.prototype = new stream(); // Trigger a cue point that captures the current state of the\n // display buffer\n\n Cea608Stream.prototype.flushDisplayed = function (pts) {\n var content = this.displayed_ // remove spaces from the start and end of the string\n .map(function (row, index) {\n try {\n return row.trim();\n } catch (e) {\n // Ordinarily, this shouldn't happen. However, caption\n // parsing errors should not throw exceptions and\n // break playback.\n this.trigger('log', {\n level: 'warn',\n message: 'Skipping a malformed 608 caption at index ' + index + '.'\n });\n return '';\n }\n }, this) // combine all text rows to display in one cue\n .join('\\n') // and remove blank rows from the start and end, but not the middle\n .replace(/^\\n+|\\n+$/g, '');\n\n if (content.length) {\n this.trigger('data', {\n startPts: this.startPts_,\n endPts: pts,\n text: content,\n stream: this.name_\n });\n }\n };\n /**\n * Zero out the data, used for startup and on seek\n */\n\n\n Cea608Stream.prototype.reset = function () {\n this.mode_ = 'popOn'; // When in roll-up mode, the index of the last row that will\n // actually display captions. If a caption is shifted to a row\n // with a lower index than this, it is cleared from the display\n // buffer\n\n this.topRow_ = 0;\n this.startPts_ = 0;\n this.displayed_ = createDisplayBuffer();\n this.nonDisplayed_ = createDisplayBuffer();\n this.lastControlCode_ = null; // Track row and column for proper line-breaking and spacing\n\n this.column_ = 0;\n this.row_ = BOTTOM_ROW;\n this.rollUpRows_ = 2; // This variable holds currently-applied formatting\n\n this.formatting_ = [];\n };\n /**\n * Sets up control code and related constants for this instance\n */\n\n\n Cea608Stream.prototype.setConstants = function () {\n // The following attributes have these uses:\n // ext_ : char0 for mid-row codes, and the base for extended\n // chars (ext_+0, ext_+1, and ext_+2 are char0s for\n // extended codes)\n // control_: char0 for control codes, except byte-shifted to the\n // left so that we can do this.control_ | CONTROL_CODE\n // offset_: char0 for tab offset codes\n //\n // It's also worth noting that control codes, and _only_ control codes,\n // differ between field 1 and field2. Field 2 control codes are always\n // their field 1 value plus 1. That's why there's the \"| field\" on the\n // control value.\n if (this.dataChannel_ === 0) {\n this.BASE_ = 0x10;\n this.EXT_ = 0x11;\n this.CONTROL_ = (0x14 | this.field_) << 8;\n this.OFFSET_ = 0x17;\n } else if (this.dataChannel_ === 1) {\n this.BASE_ = 0x18;\n this.EXT_ = 0x19;\n this.CONTROL_ = (0x1c | this.field_) << 8;\n this.OFFSET_ = 0x1f;\n } // Constants for the LSByte command codes recognized by Cea608Stream. This\n // list is not exhaustive. For a more comprehensive listing and semantics see\n // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf\n // Padding\n\n\n this.PADDING_ = 0x0000; // Pop-on Mode\n\n this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;\n this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; // Roll-up Mode\n\n this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;\n this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;\n this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;\n this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; // paint-on mode\n\n this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; // Erasure\n\n this.BACKSPACE_ = this.CONTROL_ | 0x21;\n this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;\n this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;\n };\n /**\n * Detects if the 2-byte packet data is a special character\n *\n * Special characters have a second byte in the range 0x30 to 0x3f,\n * with the first byte being 0x11 (for data channel 1) or 0x19 (for\n * data channel 2).\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are an special character\n */\n\n\n Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) {\n return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f;\n };\n /**\n * Detects if the 2-byte packet data is an extended character\n *\n * Extended characters have a second byte in the range 0x20 to 0x3f,\n * with the first byte being 0x12 or 0x13 (for data channel 1) or\n * 0x1a or 0x1b (for data channel 2).\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are an extended character\n */\n\n\n Cea608Stream.prototype.isExtCharacter = function (char0, char1) {\n return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f;\n };\n /**\n * Detects if the 2-byte packet is a mid-row code\n *\n * Mid-row codes have a second byte in the range 0x20 to 0x2f, with\n * the first byte being 0x11 (for data channel 1) or 0x19 (for data\n * channel 2).\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are a mid-row code\n */\n\n\n Cea608Stream.prototype.isMidRowCode = function (char0, char1) {\n return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f;\n };\n /**\n * Detects if the 2-byte packet is an offset control code\n *\n * Offset control codes have a second byte in the range 0x21 to 0x23,\n * with the first byte being 0x17 (for data channel 1) or 0x1f (for\n * data channel 2).\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are an offset control code\n */\n\n\n Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) {\n return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23;\n };\n /**\n * Detects if the 2-byte packet is a Preamble Address Code\n *\n * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)\n * or 0x18 to 0x1f (for data channel 2), with the second byte in the\n * range 0x40 to 0x7f.\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are a PAC\n */\n\n\n Cea608Stream.prototype.isPAC = function (char0, char1) {\n return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f;\n };\n /**\n * Detects if a packet's second byte is in the range of a PAC color code\n *\n * PAC color codes have the second byte be in the range 0x40 to 0x4f, or\n * 0x60 to 0x6f.\n *\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the byte is a color PAC\n */\n\n\n Cea608Stream.prototype.isColorPAC = function (char1) {\n return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f;\n };\n /**\n * Detects if a single byte is in the range of a normal character\n *\n * Normal text bytes are in the range 0x20 to 0x7f.\n *\n * @param {Integer} char The byte\n * @return {Boolean} Whether the byte is a normal character\n */\n\n\n Cea608Stream.prototype.isNormalChar = function (_char2) {\n return _char2 >= 0x20 && _char2 <= 0x7f;\n };\n /**\n * Configures roll-up\n *\n * @param {Integer} pts Current PTS\n * @param {Integer} newBaseRow Used by PACs to slide the current window to\n * a new position\n */\n\n\n Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) {\n // Reset the base row to the bottom row when switching modes\n if (this.mode_ !== 'rollUp') {\n this.row_ = BOTTOM_ROW;\n this.mode_ = 'rollUp'; // Spec says to wipe memories when switching to roll-up\n\n this.flushDisplayed(pts);\n this.nonDisplayed_ = createDisplayBuffer();\n this.displayed_ = createDisplayBuffer();\n }\n\n if (newBaseRow !== undefined && newBaseRow !== this.row_) {\n // move currently displayed captions (up or down) to the new base row\n for (var i = 0; i < this.rollUpRows_; i++) {\n this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];\n this.displayed_[this.row_ - i] = '';\n }\n }\n\n if (newBaseRow === undefined) {\n newBaseRow = this.row_;\n }\n\n this.topRow_ = newBaseRow - this.rollUpRows_ + 1;\n }; // Adds the opening HTML tag for the passed character to the caption text,\n // and keeps track of it for later closing\n\n\n Cea608Stream.prototype.addFormatting = function (pts, format) {\n this.formatting_ = this.formatting_.concat(format);\n var text = format.reduce(function (text, format) {\n return text + '<' + format + '>';\n }, '');\n this[this.mode_](pts, text);\n }; // Adds HTML closing tags for current formatting to caption text and\n // clears remembered formatting\n\n\n Cea608Stream.prototype.clearFormatting = function (pts) {\n if (!this.formatting_.length) {\n return;\n }\n\n var text = this.formatting_.reverse().reduce(function (text, format) {\n return text + '';\n }, '');\n this.formatting_ = [];\n this[this.mode_](pts, text);\n }; // Mode Implementations\n\n\n Cea608Stream.prototype.popOn = function (pts, text) {\n var baseRow = this.nonDisplayed_[this.row_]; // buffer characters\n\n baseRow += text;\n this.nonDisplayed_[this.row_] = baseRow;\n };\n\n Cea608Stream.prototype.rollUp = function (pts, text) {\n var baseRow = this.displayed_[this.row_];\n baseRow += text;\n this.displayed_[this.row_] = baseRow;\n };\n\n Cea608Stream.prototype.shiftRowsUp_ = function () {\n var i; // clear out inactive rows\n\n for (i = 0; i < this.topRow_; i++) {\n this.displayed_[i] = '';\n }\n\n for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {\n this.displayed_[i] = '';\n } // shift displayed rows up\n\n\n for (i = this.topRow_; i < this.row_; i++) {\n this.displayed_[i] = this.displayed_[i + 1];\n } // clear out the bottom row\n\n\n this.displayed_[this.row_] = '';\n };\n\n Cea608Stream.prototype.paintOn = function (pts, text) {\n var baseRow = this.displayed_[this.row_];\n baseRow += text;\n this.displayed_[this.row_] = baseRow;\n }; // exports\n\n\n var captionStream = {\n CaptionStream: CaptionStream$1,\n Cea608Stream: Cea608Stream,\n Cea708Stream: Cea708Stream\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var streamTypes = {\n H264_STREAM_TYPE: 0x1B,\n ADTS_STREAM_TYPE: 0x0F,\n METADATA_STREAM_TYPE: 0x15\n };\n var MAX_TS = 8589934592;\n var RO_THRESH = 4294967296;\n var TYPE_SHARED = 'shared';\n\n var handleRollover$1 = function handleRollover(value, reference) {\n var direction = 1;\n\n if (value > reference) {\n // If the current timestamp value is greater than our reference timestamp and we detect a\n // timestamp rollover, this means the roll over is happening in the opposite direction.\n // Example scenario: Enter a long stream/video just after a rollover occurred. The reference\n // point will be set to a small number, e.g. 1. The user then seeks backwards over the\n // rollover point. In loading this segment, the timestamp values will be very large,\n // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust\n // the time stamp to be `value - 2^33`.\n direction = -1;\n } // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will\n // cause an incorrect adjustment.\n\n\n while (Math.abs(reference - value) > RO_THRESH) {\n value += direction * MAX_TS;\n }\n\n return value;\n };\n\n var TimestampRolloverStream$1 = function TimestampRolloverStream(type) {\n var lastDTS, referenceDTS;\n TimestampRolloverStream.prototype.init.call(this); // The \"shared\" type is used in cases where a stream will contain muxed\n // video and audio. We could use `undefined` here, but having a string\n // makes debugging a little clearer.\n\n this.type_ = type || TYPE_SHARED;\n\n this.push = function (data) {\n // Any \"shared\" rollover streams will accept _all_ data. Otherwise,\n // streams will only accept data that matches their type.\n if (this.type_ !== TYPE_SHARED && data.type !== this.type_) {\n return;\n }\n\n if (referenceDTS === undefined) {\n referenceDTS = data.dts;\n }\n\n data.dts = handleRollover$1(data.dts, referenceDTS);\n data.pts = handleRollover$1(data.pts, referenceDTS);\n lastDTS = data.dts;\n this.trigger('data', data);\n };\n\n this.flush = function () {\n referenceDTS = lastDTS;\n this.trigger('done');\n };\n\n this.endTimeline = function () {\n this.flush();\n this.trigger('endedtimeline');\n };\n\n this.discontinuity = function () {\n referenceDTS = void 0;\n lastDTS = void 0;\n };\n\n this.reset = function () {\n this.discontinuity();\n this.trigger('reset');\n };\n };\n\n TimestampRolloverStream$1.prototype = new stream();\n var timestampRolloverStream = {\n TimestampRolloverStream: TimestampRolloverStream$1,\n handleRollover: handleRollover$1\n };\n\n var percentEncode$1 = function percentEncode(bytes, start, end) {\n var i,\n result = '';\n\n for (i = start; i < end; i++) {\n result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n }\n\n return result;\n },\n // return the string representation of the specified byte range,\n // interpreted as UTf-8.\n parseUtf8 = function parseUtf8(bytes, start, end) {\n return decodeURIComponent(percentEncode$1(bytes, start, end));\n },\n // return the string representation of the specified byte range,\n // interpreted as ISO-8859-1.\n parseIso88591$1 = function parseIso88591(bytes, start, end) {\n return unescape(percentEncode$1(bytes, start, end)); // jshint ignore:line\n },\n parseSyncSafeInteger$1 = function parseSyncSafeInteger(data) {\n return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n },\n tagParsers = {\n TXXX: function TXXX(tag) {\n var i;\n\n if (tag.data[0] !== 3) {\n // ignore frames with unrecognized character encodings\n return;\n }\n\n for (i = 1; i < tag.data.length; i++) {\n if (tag.data[i] === 0) {\n // parse the text fields\n tag.description = parseUtf8(tag.data, 1, i); // do not include the null terminator in the tag value\n\n tag.value = parseUtf8(tag.data, i + 1, tag.data.length).replace(/\\0*$/, '');\n break;\n }\n }\n\n tag.data = tag.value;\n },\n WXXX: function WXXX(tag) {\n var i;\n\n if (tag.data[0] !== 3) {\n // ignore frames with unrecognized character encodings\n return;\n }\n\n for (i = 1; i < tag.data.length; i++) {\n if (tag.data[i] === 0) {\n // parse the description and URL fields\n tag.description = parseUtf8(tag.data, 1, i);\n tag.url = parseUtf8(tag.data, i + 1, tag.data.length);\n break;\n }\n }\n },\n PRIV: function PRIV(tag) {\n var i;\n\n for (i = 0; i < tag.data.length; i++) {\n if (tag.data[i] === 0) {\n // parse the description and URL fields\n tag.owner = parseIso88591$1(tag.data, 0, i);\n break;\n }\n }\n\n tag.privateData = tag.data.subarray(i + 1);\n tag.data = tag.privateData;\n }\n },\n _MetadataStream;\n\n _MetadataStream = function MetadataStream(options) {\n var settings = {\n // the bytes of the program-level descriptor field in MP2T\n // see ISO/IEC 13818-1:2013 (E), section 2.6 \"Program and\n // program element descriptors\"\n descriptor: options && options.descriptor\n },\n // the total size in bytes of the ID3 tag being parsed\n tagSize = 0,\n // tag data that is not complete enough to be parsed\n buffer = [],\n // the total number of bytes currently in the buffer\n bufferSize = 0,\n i;\n\n _MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type\n // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track\n\n\n this.dispatchType = streamTypes.METADATA_STREAM_TYPE.toString(16);\n\n if (settings.descriptor) {\n for (i = 0; i < settings.descriptor.length; i++) {\n this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);\n }\n }\n\n this.push = function (chunk) {\n var tag, frameStart, frameSize, frame, i, frameHeader;\n\n if (chunk.type !== 'timed-metadata') {\n return;\n } // if data_alignment_indicator is set in the PES header,\n // we must have the start of a new ID3 tag. Assume anything\n // remaining in the buffer was malformed and throw it out\n\n\n if (chunk.dataAlignmentIndicator) {\n bufferSize = 0;\n buffer.length = 0;\n } // ignore events that don't look like ID3 data\n\n\n if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {\n this.trigger('log', {\n level: 'warn',\n message: 'Skipping unrecognized metadata packet'\n });\n return;\n } // add this chunk to the data we've collected so far\n\n\n buffer.push(chunk);\n bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header\n\n if (buffer.length === 1) {\n // the frame size is transmitted as a 28-bit integer in the\n // last four bytes of the ID3 header.\n // The most significant bit of each byte is dropped and the\n // results concatenated to recover the actual value.\n tagSize = parseSyncSafeInteger$1(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n // convenient for our comparisons to include it\n\n tagSize += 10;\n } // if the entire frame has not arrived, wait for more data\n\n\n if (bufferSize < tagSize) {\n return;\n } // collect the entire frame so it can be parsed\n\n\n tag = {\n data: new Uint8Array(tagSize),\n frames: [],\n pts: buffer[0].pts,\n dts: buffer[0].dts\n };\n\n for (i = 0; i < tagSize;) {\n tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);\n i += buffer[0].data.byteLength;\n bufferSize -= buffer[0].data.byteLength;\n buffer.shift();\n } // find the start of the first frame and the end of the tag\n\n\n frameStart = 10;\n\n if (tag.data[5] & 0x40) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n\n frameStart += parseSyncSafeInteger$1(tag.data.subarray(10, 14)); // clip any padding off the end\n\n tagSize -= parseSyncSafeInteger$1(tag.data.subarray(16, 20));\n } // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n\n do {\n // determine the number of bytes in this frame\n frameSize = parseSyncSafeInteger$1(tag.data.subarray(frameStart + 4, frameStart + 8));\n\n if (frameSize < 1) {\n this.trigger('log', {\n level: 'warn',\n message: 'Malformed ID3 frame encountered. Skipping metadata parsing.'\n });\n return;\n }\n\n frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);\n frame = {\n id: frameHeader,\n data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)\n };\n frame.key = frame.id;\n\n if (tagParsers[frame.id]) {\n tagParsers[frame.id](frame); // handle the special PRIV frame used to indicate the start\n // time for raw AAC data\n\n if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {\n var d = frame.data,\n size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n size *= 4;\n size += d[7] & 0x03;\n frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based\n // on the value of this frame\n // we couldn't have known the appropriate pts and dts before\n // parsing this ID3 tag so set those values now\n\n if (tag.pts === undefined && tag.dts === undefined) {\n tag.pts = frame.timeStamp;\n tag.dts = frame.timeStamp;\n }\n\n this.trigger('timestamp', frame);\n }\n }\n\n tag.frames.push(frame);\n frameStart += 10; // advance past the frame header\n\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < tagSize);\n\n this.trigger('data', tag);\n };\n };\n\n _MetadataStream.prototype = new stream();\n var metadataStream = _MetadataStream;\n var TimestampRolloverStream = timestampRolloverStream.TimestampRolloverStream; // object types\n\n var _TransportPacketStream, _TransportParseStream, _ElementaryStream; // constants\n\n\n var MP2T_PACKET_LENGTH$1 = 188,\n // bytes\n SYNC_BYTE$1 = 0x47;\n /**\n * Splits an incoming stream of binary data into MPEG-2 Transport\n * Stream packets.\n */\n\n _TransportPacketStream = function TransportPacketStream() {\n var buffer = new Uint8Array(MP2T_PACKET_LENGTH$1),\n bytesInBuffer = 0;\n\n _TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.\n\n /**\n * Split a stream of data into M2TS packets\n **/\n\n\n this.push = function (bytes) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH$1,\n everything; // If there are bytes remaining from the last segment, prepend them to the\n // bytes that were pushed in\n\n if (bytesInBuffer) {\n everything = new Uint8Array(bytes.byteLength + bytesInBuffer);\n everything.set(buffer.subarray(0, bytesInBuffer));\n everything.set(bytes, bytesInBuffer);\n bytesInBuffer = 0;\n } else {\n everything = bytes;\n } // While we have enough data for a packet\n\n\n while (endIndex < everything.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (everything[startIndex] === SYNC_BYTE$1 && everything[endIndex] === SYNC_BYTE$1) {\n // We found a packet so emit it and jump one whole packet forward in\n // the stream\n this.trigger('data', everything.subarray(startIndex, endIndex));\n startIndex += MP2T_PACKET_LENGTH$1;\n endIndex += MP2T_PACKET_LENGTH$1;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n\n startIndex++;\n endIndex++;\n } // If there was some data left over at the end of the segment that couldn't\n // possibly be a whole packet, keep it because it might be the start of a packet\n // that continues in the next segment\n\n\n if (startIndex < everything.byteLength) {\n buffer.set(everything.subarray(startIndex), 0);\n bytesInBuffer = everything.byteLength - startIndex;\n }\n };\n /**\n * Passes identified M2TS packets to the TransportParseStream to be parsed\n **/\n\n\n this.flush = function () {\n // If the buffer contains a whole packet when we are being flushed, emit it\n // and empty the buffer. Otherwise hold onto the data because it may be\n // important for decoding the next segment\n if (bytesInBuffer === MP2T_PACKET_LENGTH$1 && buffer[0] === SYNC_BYTE$1) {\n this.trigger('data', buffer);\n bytesInBuffer = 0;\n }\n\n this.trigger('done');\n };\n\n this.endTimeline = function () {\n this.flush();\n this.trigger('endedtimeline');\n };\n\n this.reset = function () {\n bytesInBuffer = 0;\n this.trigger('reset');\n };\n };\n\n _TransportPacketStream.prototype = new stream();\n /**\n * Accepts an MP2T TransportPacketStream and emits data events with parsed\n * forms of the individual transport stream packets.\n */\n\n _TransportParseStream = function TransportParseStream() {\n var parsePsi, parsePat, parsePmt, self;\n\n _TransportParseStream.prototype.init.call(this);\n\n self = this;\n this.packetsWaitingForPmt = [];\n this.programMapTable = undefined;\n\n parsePsi = function parsePsi(payload, psi) {\n var offset = 0; // PSI packets may be split into multiple sections and those\n // sections may be split into multiple packets. If a PSI\n // section starts in this packet, the payload_unit_start_indicator\n // will be true and the first byte of the payload will indicate\n // the offset from the current position to the start of the\n // section.\n\n if (psi.payloadUnitStartIndicator) {\n offset += payload[offset] + 1;\n }\n\n if (psi.type === 'pat') {\n parsePat(payload.subarray(offset), psi);\n } else {\n parsePmt(payload.subarray(offset), psi);\n }\n };\n\n parsePat = function parsePat(payload, pat) {\n pat.section_number = payload[7]; // eslint-disable-line camelcase\n\n pat.last_section_number = payload[8]; // eslint-disable-line camelcase\n // skip the PSI header and parse the first PMT entry\n\n self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];\n pat.pmtPid = self.pmtPid;\n };\n /**\n * Parse out the relevant fields of a Program Map Table (PMT).\n * @param payload {Uint8Array} the PMT-specific portion of an MP2T\n * packet. The first byte in this array should be the table_id\n * field.\n * @param pmt {object} the object that should be decorated with\n * fields parsed from the PMT.\n */\n\n\n parsePmt = function parsePmt(payload, pmt) {\n var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually\n // take effect. We don't believe this should ever be the case\n // for HLS but we'll ignore \"forward\" PMT declarations if we see\n // them. Future PMT declarations have the current_next_indicator\n // set to zero.\n\n if (!(payload[5] & 0x01)) {\n return;\n } // overwrite any existing program map table\n\n\n self.programMapTable = {\n video: null,\n audio: null,\n 'timed-metadata': {}\n }; // the mapping table ends at the end of the current section\n\n sectionLength = (payload[1] & 0x0f) << 8 | payload[2];\n tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n // long the program info descriptors are\n\n programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table\n\n offset = 12 + programInfoLength;\n\n while (offset < tableEnd) {\n var streamType = payload[offset];\n var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types\n // TODO: should this be done for metadata too? for now maintain behavior of\n // multiple metadata streams\n\n if (streamType === streamTypes.H264_STREAM_TYPE && self.programMapTable.video === null) {\n self.programMapTable.video = pid;\n } else if (streamType === streamTypes.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {\n self.programMapTable.audio = pid;\n } else if (streamType === streamTypes.METADATA_STREAM_TYPE) {\n // map pid to stream type for metadata streams\n self.programMapTable['timed-metadata'][pid] = streamType;\n } // move to the next table entry\n // skip past the elementary stream descriptors, if present\n\n\n offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;\n } // record the map on the packet as well\n\n\n pmt.programMapTable = self.programMapTable;\n };\n /**\n * Deliver a new MP2T packet to the next stream in the pipeline.\n */\n\n\n this.push = function (packet) {\n var result = {},\n offset = 4;\n result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]\n\n result.pid = packet[1] & 0x1f;\n result.pid <<= 8;\n result.pid |= packet[2]; // if an adaption field is present, its length is specified by the\n // fifth byte of the TS packet header. The adaptation field is\n // used to add stuffing to PES packets that don't fill a complete\n // TS packet, and to specify some forms of timing and control data\n // that we do not currently use.\n\n if ((packet[3] & 0x30) >>> 4 > 0x01) {\n offset += packet[offset] + 1;\n } // parse the rest of the packet based on the type\n\n\n if (result.pid === 0) {\n result.type = 'pat';\n parsePsi(packet.subarray(offset), result);\n this.trigger('data', result);\n } else if (result.pid === this.pmtPid) {\n result.type = 'pmt';\n parsePsi(packet.subarray(offset), result);\n this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now\n\n while (this.packetsWaitingForPmt.length) {\n this.processPes_.apply(this, this.packetsWaitingForPmt.shift());\n }\n } else if (this.programMapTable === undefined) {\n // When we have not seen a PMT yet, defer further processing of\n // PES packets until one has been parsed\n this.packetsWaitingForPmt.push([packet, offset, result]);\n } else {\n this.processPes_(packet, offset, result);\n }\n };\n\n this.processPes_ = function (packet, offset, result) {\n // set the appropriate stream type\n if (result.pid === this.programMapTable.video) {\n result.streamType = streamTypes.H264_STREAM_TYPE;\n } else if (result.pid === this.programMapTable.audio) {\n result.streamType = streamTypes.ADTS_STREAM_TYPE;\n } else {\n // if not video or audio, it is timed-metadata or unknown\n // if unknown, streamType will be undefined\n result.streamType = this.programMapTable['timed-metadata'][result.pid];\n }\n\n result.type = 'pes';\n result.data = packet.subarray(offset);\n this.trigger('data', result);\n };\n };\n\n _TransportParseStream.prototype = new stream();\n _TransportParseStream.STREAM_TYPES = {\n h264: 0x1b,\n adts: 0x0f\n };\n /**\n * Reconsistutes program elementary stream (PES) packets from parsed\n * transport stream packets. That is, if you pipe an\n * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output\n * events will be events which capture the bytes for individual PES\n * packets plus relevant metadata that has been extracted from the\n * container.\n */\n\n _ElementaryStream = function ElementaryStream() {\n var self = this,\n segmentHadPmt = false,\n // PES packet fragments\n video = {\n data: [],\n size: 0\n },\n audio = {\n data: [],\n size: 0\n },\n timedMetadata = {\n data: [],\n size: 0\n },\n programMapTable,\n parsePes = function parsePes(payload, pes) {\n var ptsDtsFlags;\n var startPrefix = payload[0] << 16 | payload[1] << 8 | payload[2]; // default to an empty array\n\n pes.data = new Uint8Array(); // In certain live streams, the start of a TS fragment has ts packets\n // that are frame data that is continuing from the previous fragment. This\n // is to check that the pes data is the start of a new pes payload\n\n if (startPrefix !== 1) {\n return;\n } // get the packet length, this will be 0 for video\n\n\n pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe\n\n pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value\n // and a DTS value. Determine what combination of values is\n // available to work with.\n\n ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number. Javascript\n // performs all bitwise operations on 32-bit integers but javascript\n // supports a much greater range (52-bits) of integer using standard\n // mathematical operations.\n // We construct a 31-bit value using bitwise operators over the 31\n // most significant bits and then multiply by 4 (equal to a left-shift\n // of 2) before we add the final 2 least significant bits of the\n // timestamp (equal to an OR.)\n\n if (ptsDtsFlags & 0xC0) {\n // the PTS and DTS are not written out directly. For information\n // on how they are encoded, see\n // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;\n pes.pts *= 4; // Left shift by 2\n\n pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs\n\n pes.dts = pes.pts;\n\n if (ptsDtsFlags & 0x40) {\n pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;\n pes.dts *= 4; // Left shift by 2\n\n pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs\n }\n } // the data section starts immediately after the PES header.\n // pes_header_data_length specifies the number of header bytes\n // that follow the last byte of the field.\n\n\n pes.data = payload.subarray(9 + payload[8]);\n },\n\n /**\n * Pass completely parsed PES packets to the next stream in the pipeline\n **/\n flushStream = function flushStream(stream, type, forceFlush) {\n var packetData = new Uint8Array(stream.size),\n event = {\n type: type\n },\n i = 0,\n offset = 0,\n packetFlushable = false,\n fragment; // do nothing if there is not enough buffered data for a complete\n // PES header\n\n if (!stream.data.length || stream.size < 9) {\n return;\n }\n\n event.trackId = stream.data[0].pid; // reassemble the packet\n\n for (i = 0; i < stream.data.length; i++) {\n fragment = stream.data[i];\n packetData.set(fragment.data, offset);\n offset += fragment.data.byteLength;\n } // parse assembled packet's PES header\n\n\n parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length\n // check that there is enough stream data to fill the packet\n\n packetFlushable = type === 'video' || event.packetLength <= stream.size; // flush pending packets if the conditions are right\n\n if (forceFlush || packetFlushable) {\n stream.size = 0;\n stream.data.length = 0;\n } // only emit packets that are complete. this is to avoid assembling\n // incomplete PES packets due to poor segmentation\n\n\n if (packetFlushable) {\n self.trigger('data', event);\n }\n };\n\n _ElementaryStream.prototype.init.call(this);\n /**\n * Identifies M2TS packet types and parses PES packets using metadata\n * parsed from the PMT\n **/\n\n\n this.push = function (data) {\n ({\n pat: function pat() {// we have to wait for the PMT to arrive as well before we\n // have any meaningful metadata\n },\n pes: function pes() {\n var stream, streamType;\n\n switch (data.streamType) {\n case streamTypes.H264_STREAM_TYPE:\n stream = video;\n streamType = 'video';\n break;\n\n case streamTypes.ADTS_STREAM_TYPE:\n stream = audio;\n streamType = 'audio';\n break;\n\n case streamTypes.METADATA_STREAM_TYPE:\n stream = timedMetadata;\n streamType = 'timed-metadata';\n break;\n\n default:\n // ignore unknown stream types\n return;\n } // if a new packet is starting, we can flush the completed\n // packet\n\n\n if (data.payloadUnitStartIndicator) {\n flushStream(stream, streamType, true);\n } // buffer this fragment until we are sure we've received the\n // complete payload\n\n\n stream.data.push(data);\n stream.size += data.data.byteLength;\n },\n pmt: function pmt() {\n var event = {\n type: 'metadata',\n tracks: []\n };\n programMapTable = data.programMapTable; // translate audio and video streams to tracks\n\n if (programMapTable.video !== null) {\n event.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.video,\n codec: 'avc',\n type: 'video'\n });\n }\n\n if (programMapTable.audio !== null) {\n event.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.audio,\n codec: 'adts',\n type: 'audio'\n });\n }\n\n segmentHadPmt = true;\n self.trigger('data', event);\n }\n })[data.type]();\n };\n\n this.reset = function () {\n video.size = 0;\n video.data.length = 0;\n audio.size = 0;\n audio.data.length = 0;\n this.trigger('reset');\n };\n /**\n * Flush any remaining input. Video PES packets may be of variable\n * length. Normally, the start of a new video packet can trigger the\n * finalization of the previous packet. That is not possible if no\n * more video is forthcoming, however. In that case, some other\n * mechanism (like the end of the file) has to be employed. When it is\n * clear that no additional data is forthcoming, calling this method\n * will flush the buffered packets.\n */\n\n\n this.flushStreams_ = function () {\n // !!THIS ORDER IS IMPORTANT!!\n // video first then audio\n flushStream(video, 'video');\n flushStream(audio, 'audio');\n flushStream(timedMetadata, 'timed-metadata');\n };\n\n this.flush = function () {\n // if on flush we haven't had a pmt emitted\n // and we have a pmt to emit. emit the pmt\n // so that we trigger a trackinfo downstream.\n if (!segmentHadPmt && programMapTable) {\n var pmt = {\n type: 'metadata',\n tracks: []\n }; // translate audio and video streams to tracks\n\n if (programMapTable.video !== null) {\n pmt.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.video,\n codec: 'avc',\n type: 'video'\n });\n }\n\n if (programMapTable.audio !== null) {\n pmt.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.audio,\n codec: 'adts',\n type: 'audio'\n });\n }\n\n self.trigger('data', pmt);\n }\n\n segmentHadPmt = false;\n this.flushStreams_();\n this.trigger('done');\n };\n };\n\n _ElementaryStream.prototype = new stream();\n var m2ts = {\n PAT_PID: 0x0000,\n MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH$1,\n TransportPacketStream: _TransportPacketStream,\n TransportParseStream: _TransportParseStream,\n ElementaryStream: _ElementaryStream,\n TimestampRolloverStream: TimestampRolloverStream,\n CaptionStream: captionStream.CaptionStream,\n Cea608Stream: captionStream.Cea608Stream,\n Cea708Stream: captionStream.Cea708Stream,\n MetadataStream: metadataStream\n };\n\n for (var type in streamTypes) {\n if (streamTypes.hasOwnProperty(type)) {\n m2ts[type] = streamTypes[type];\n }\n }\n\n var m2ts_1 = m2ts;\n var ONE_SECOND_IN_TS$2 = clock.ONE_SECOND_IN_TS;\n\n var _AdtsStream;\n\n var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n /*\n * Accepts a ElementaryStream and emits data events with parsed\n * AAC Audio Frames of the individual packets. Input audio in ADTS\n * format is unpacked and re-emitted as AAC frames.\n *\n * @see http://wiki.multimedia.cx/index.php?title=ADTS\n * @see http://wiki.multimedia.cx/?title=Understanding_AAC\n */\n\n _AdtsStream = function AdtsStream(handlePartialSegments) {\n var buffer,\n frameNum = 0;\n\n _AdtsStream.prototype.init.call(this);\n\n this.skipWarn_ = function (start, end) {\n this.trigger('log', {\n level: 'warn',\n message: \"adts skiping bytes \" + start + \" to \" + end + \" in frame \" + frameNum + \" outside syncword\"\n });\n };\n\n this.push = function (packet) {\n var i = 0,\n frameLength,\n protectionSkipBytes,\n oldBuffer,\n sampleCount,\n adtsFrameDuration;\n\n if (!handlePartialSegments) {\n frameNum = 0;\n }\n\n if (packet.type !== 'audio') {\n // ignore non-audio data\n return;\n } // Prepend any data in the buffer to the input data so that we can parse\n // aac frames the cross a PES packet boundary\n\n\n if (buffer && buffer.length) {\n oldBuffer = buffer;\n buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);\n buffer.set(oldBuffer);\n buffer.set(packet.data, oldBuffer.byteLength);\n } else {\n buffer = packet.data;\n } // unpack any ADTS frames which have been fully received\n // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS\n\n\n var skip; // We use i + 7 here because we want to be able to parse the entire header.\n // If we don't have enough bytes to do that, then we definitely won't have a full frame.\n\n while (i + 7 < buffer.length) {\n // Look for the start of an ADTS header..\n if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {\n if (typeof skip !== 'number') {\n skip = i;\n } // If a valid header was not found, jump one forward and attempt to\n // find a valid ADTS header starting at the next byte\n\n\n i++;\n continue;\n }\n\n if (typeof skip === 'number') {\n this.skipWarn_(skip, i);\n skip = null;\n } // The protection skip bit tells us if we have 2 bytes of CRC data at the\n // end of the ADTS header\n\n\n protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the\n // end of the sync sequence\n // NOTE: frame length includes the size of the header\n\n frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;\n sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;\n adtsFrameDuration = sampleCount * ONE_SECOND_IN_TS$2 / ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2]; // If we don't have enough data to actually finish this ADTS frame,\n // then we have to wait for more data\n\n if (buffer.byteLength - i < frameLength) {\n break;\n } // Otherwise, deliver the complete AAC frame\n\n\n this.trigger('data', {\n pts: packet.pts + frameNum * adtsFrameDuration,\n dts: packet.dts + frameNum * adtsFrameDuration,\n sampleCount: sampleCount,\n audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,\n channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,\n samplerate: ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2],\n samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,\n // assume ISO/IEC 14496-12 AudioSampleEntry default of 16\n samplesize: 16,\n // data is the frame without it's header\n data: buffer.subarray(i + 7 + protectionSkipBytes, i + frameLength)\n });\n frameNum++;\n i += frameLength;\n }\n\n if (typeof skip === 'number') {\n this.skipWarn_(skip, i);\n skip = null;\n } // remove processed bytes from the buffer.\n\n\n buffer = buffer.subarray(i);\n };\n\n this.flush = function () {\n frameNum = 0;\n this.trigger('done');\n };\n\n this.reset = function () {\n buffer = void 0;\n this.trigger('reset');\n };\n\n this.endTimeline = function () {\n buffer = void 0;\n this.trigger('endedtimeline');\n };\n };\n\n _AdtsStream.prototype = new stream();\n var adts = _AdtsStream;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var ExpGolomb;\n /**\n * Parser for exponential Golomb codes, a variable-bitwidth number encoding\n * scheme used by h264.\n */\n\n ExpGolomb = function ExpGolomb(workingData) {\n var // the number of bytes left to examine in workingData\n workingBytesAvailable = workingData.byteLength,\n // the current word being examined\n workingWord = 0,\n // :uint\n // the number of bits left to examine in the current word\n workingBitsAvailable = 0; // :uint;\n // ():uint\n\n this.length = function () {\n return 8 * workingBytesAvailable;\n }; // ():uint\n\n\n this.bitsAvailable = function () {\n return 8 * workingBytesAvailable + workingBitsAvailable;\n }; // ():void\n\n\n this.loadWord = function () {\n var position = workingData.byteLength - workingBytesAvailable,\n workingBytes = new Uint8Array(4),\n availableBytes = Math.min(4, workingBytesAvailable);\n\n if (availableBytes === 0) {\n throw new Error('no bytes available');\n }\n\n workingBytes.set(workingData.subarray(position, position + availableBytes));\n workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed\n\n workingBitsAvailable = availableBytes * 8;\n workingBytesAvailable -= availableBytes;\n }; // (count:int):void\n\n\n this.skipBits = function (count) {\n var skipBytes; // :int\n\n if (workingBitsAvailable > count) {\n workingWord <<= count;\n workingBitsAvailable -= count;\n } else {\n count -= workingBitsAvailable;\n skipBytes = Math.floor(count / 8);\n count -= skipBytes * 8;\n workingBytesAvailable -= skipBytes;\n this.loadWord();\n workingWord <<= count;\n workingBitsAvailable -= count;\n }\n }; // (size:int):uint\n\n\n this.readBits = function (size) {\n var bits = Math.min(workingBitsAvailable, size),\n // :uint\n valu = workingWord >>> 32 - bits; // :uint\n // if size > 31, handle error\n\n workingBitsAvailable -= bits;\n\n if (workingBitsAvailable > 0) {\n workingWord <<= bits;\n } else if (workingBytesAvailable > 0) {\n this.loadWord();\n }\n\n bits = size - bits;\n\n if (bits > 0) {\n return valu << bits | this.readBits(bits);\n }\n\n return valu;\n }; // ():uint\n\n\n this.skipLeadingZeros = function () {\n var leadingZeroCount; // :uint\n\n for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {\n if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {\n // the first bit of working word is 1\n workingWord <<= leadingZeroCount;\n workingBitsAvailable -= leadingZeroCount;\n return leadingZeroCount;\n }\n } // we exhausted workingWord and still have not found a 1\n\n\n this.loadWord();\n return leadingZeroCount + this.skipLeadingZeros();\n }; // ():void\n\n\n this.skipUnsignedExpGolomb = function () {\n this.skipBits(1 + this.skipLeadingZeros());\n }; // ():void\n\n\n this.skipExpGolomb = function () {\n this.skipBits(1 + this.skipLeadingZeros());\n }; // ():uint\n\n\n this.readUnsignedExpGolomb = function () {\n var clz = this.skipLeadingZeros(); // :uint\n\n return this.readBits(clz + 1) - 1;\n }; // ():int\n\n\n this.readExpGolomb = function () {\n var valu = this.readUnsignedExpGolomb(); // :int\n\n if (0x01 & valu) {\n // the number is odd if the low order bit is set\n return 1 + valu >>> 1; // add 1 to make it even, and divide by 2\n }\n\n return -1 * (valu >>> 1); // divide by two then make it negative\n }; // Some convenience functions\n // :Boolean\n\n\n this.readBoolean = function () {\n return this.readBits(1) === 1;\n }; // ():int\n\n\n this.readUnsignedByte = function () {\n return this.readBits(8);\n };\n\n this.loadWord();\n };\n\n var expGolomb = ExpGolomb;\n\n var _H264Stream, _NalByteStream;\n\n var PROFILES_WITH_OPTIONAL_SPS_DATA;\n /**\n * Accepts a NAL unit byte stream and unpacks the embedded NAL units.\n */\n\n _NalByteStream = function NalByteStream() {\n var syncPoint = 0,\n i,\n buffer;\n\n _NalByteStream.prototype.init.call(this);\n /*\n * Scans a byte stream and triggers a data event with the NAL units found.\n * @param {Object} data Event received from H264Stream\n * @param {Uint8Array} data.data The h264 byte stream to be scanned\n *\n * @see H264Stream.push\n */\n\n\n this.push = function (data) {\n var swapBuffer;\n\n if (!buffer) {\n buffer = data.data;\n } else {\n swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);\n swapBuffer.set(buffer);\n swapBuffer.set(data.data, buffer.byteLength);\n buffer = swapBuffer;\n }\n\n var len = buffer.byteLength; // Rec. ITU-T H.264, Annex B\n // scan for NAL unit boundaries\n // a match looks like this:\n // 0 0 1 .. NAL .. 0 0 1\n // ^ sync point ^ i\n // or this:\n // 0 0 1 .. NAL .. 0 0 0\n // ^ sync point ^ i\n // advance the sync point to a NAL start, if necessary\n\n for (; syncPoint < len - 3; syncPoint++) {\n if (buffer[syncPoint + 2] === 1) {\n // the sync point is properly aligned\n i = syncPoint + 5;\n break;\n }\n }\n\n while (i < len) {\n // look at the current byte to determine if we've hit the end of\n // a NAL unit boundary\n switch (buffer[i]) {\n case 0:\n // skip past non-sync sequences\n if (buffer[i - 1] !== 0) {\n i += 2;\n break;\n } else if (buffer[i - 2] !== 0) {\n i++;\n break;\n } // deliver the NAL unit if it isn't empty\n\n\n if (syncPoint + 3 !== i - 2) {\n this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n } // drop trailing zeroes\n\n\n do {\n i++;\n } while (buffer[i] !== 1 && i < len);\n\n syncPoint = i - 2;\n i += 3;\n break;\n\n case 1:\n // skip past non-sync sequences\n if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {\n i += 3;\n break;\n } // deliver the NAL unit\n\n\n this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n syncPoint = i - 2;\n i += 3;\n break;\n\n default:\n // the current byte isn't a one or zero, so it cannot be part\n // of a sync sequence\n i += 3;\n break;\n }\n } // filter out the NAL units that were delivered\n\n\n buffer = buffer.subarray(syncPoint);\n i -= syncPoint;\n syncPoint = 0;\n };\n\n this.reset = function () {\n buffer = null;\n syncPoint = 0;\n this.trigger('reset');\n };\n\n this.flush = function () {\n // deliver the last buffered NAL unit\n if (buffer && buffer.byteLength > 3) {\n this.trigger('data', buffer.subarray(syncPoint + 3));\n } // reset the stream state\n\n\n buffer = null;\n syncPoint = 0;\n this.trigger('done');\n };\n\n this.endTimeline = function () {\n this.flush();\n this.trigger('endedtimeline');\n };\n };\n\n _NalByteStream.prototype = new stream(); // values of profile_idc that indicate additional fields are included in the SPS\n // see Recommendation ITU-T H.264 (4/2013),\n // 7.3.2.1.1 Sequence parameter set data syntax\n\n PROFILES_WITH_OPTIONAL_SPS_DATA = {\n 100: true,\n 110: true,\n 122: true,\n 244: true,\n 44: true,\n 83: true,\n 86: true,\n 118: true,\n 128: true,\n // TODO: the three profiles below don't\n // appear to have sps data in the specificiation anymore?\n 138: true,\n 139: true,\n 134: true\n };\n /**\n * Accepts input from a ElementaryStream and produces H.264 NAL unit data\n * events.\n */\n\n _H264Stream = function H264Stream() {\n var nalByteStream = new _NalByteStream(),\n self,\n trackId,\n currentPts,\n currentDts,\n discardEmulationPreventionBytes,\n readSequenceParameterSet,\n skipScalingList;\n\n _H264Stream.prototype.init.call(this);\n\n self = this;\n /*\n * Pushes a packet from a stream onto the NalByteStream\n *\n * @param {Object} packet - A packet received from a stream\n * @param {Uint8Array} packet.data - The raw bytes of the packet\n * @param {Number} packet.dts - Decode timestamp of the packet\n * @param {Number} packet.pts - Presentation timestamp of the packet\n * @param {Number} packet.trackId - The id of the h264 track this packet came from\n * @param {('video'|'audio')} packet.type - The type of packet\n *\n */\n\n this.push = function (packet) {\n if (packet.type !== 'video') {\n return;\n }\n\n trackId = packet.trackId;\n currentPts = packet.pts;\n currentDts = packet.dts;\n nalByteStream.push(packet);\n };\n /*\n * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps\n * for the NALUs to the next stream component.\n * Also, preprocess caption and sequence parameter NALUs.\n *\n * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`\n * @see NalByteStream.push\n */\n\n\n nalByteStream.on('data', function (data) {\n var event = {\n trackId: trackId,\n pts: currentPts,\n dts: currentDts,\n data: data,\n nalUnitTypeCode: data[0] & 0x1f\n };\n\n switch (event.nalUnitTypeCode) {\n case 0x05:\n event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';\n break;\n\n case 0x06:\n event.nalUnitType = 'sei_rbsp';\n event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n break;\n\n case 0x07:\n event.nalUnitType = 'seq_parameter_set_rbsp';\n event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n event.config = readSequenceParameterSet(event.escapedRBSP);\n break;\n\n case 0x08:\n event.nalUnitType = 'pic_parameter_set_rbsp';\n break;\n\n case 0x09:\n event.nalUnitType = 'access_unit_delimiter_rbsp';\n break;\n } // This triggers data on the H264Stream\n\n\n self.trigger('data', event);\n });\n nalByteStream.on('done', function () {\n self.trigger('done');\n });\n nalByteStream.on('partialdone', function () {\n self.trigger('partialdone');\n });\n nalByteStream.on('reset', function () {\n self.trigger('reset');\n });\n nalByteStream.on('endedtimeline', function () {\n self.trigger('endedtimeline');\n });\n\n this.flush = function () {\n nalByteStream.flush();\n };\n\n this.partialFlush = function () {\n nalByteStream.partialFlush();\n };\n\n this.reset = function () {\n nalByteStream.reset();\n };\n\n this.endTimeline = function () {\n nalByteStream.endTimeline();\n };\n /**\n * Advance the ExpGolomb decoder past a scaling list. The scaling\n * list is optionally transmitted as part of a sequence parameter\n * set and is not relevant to transmuxing.\n * @param count {number} the number of entries in this scaling list\n * @param expGolombDecoder {object} an ExpGolomb pointed to the\n * start of a scaling list\n * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1\n */\n\n\n skipScalingList = function skipScalingList(count, expGolombDecoder) {\n var lastScale = 8,\n nextScale = 8,\n j,\n deltaScale;\n\n for (j = 0; j < count; j++) {\n if (nextScale !== 0) {\n deltaScale = expGolombDecoder.readExpGolomb();\n nextScale = (lastScale + deltaScale + 256) % 256;\n }\n\n lastScale = nextScale === 0 ? lastScale : nextScale;\n }\n };\n /**\n * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n * Sequence Payload\"\n * @param data {Uint8Array} the bytes of a RBSP from a NAL\n * unit\n * @return {Uint8Array} the RBSP without any Emulation\n * Prevention Bytes\n */\n\n\n discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) {\n var length = data.byteLength,\n emulationPreventionBytesPositions = [],\n i = 1,\n newLength,\n newData; // Find all `Emulation Prevention Bytes`\n\n while (i < length - 2) {\n if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n emulationPreventionBytesPositions.push(i + 2);\n i += 2;\n } else {\n i++;\n }\n } // If no Emulation Prevention Bytes were found just return the original\n // array\n\n\n if (emulationPreventionBytesPositions.length === 0) {\n return data;\n } // Create a new array to hold the NAL unit data\n\n\n newLength = length - emulationPreventionBytesPositions.length;\n newData = new Uint8Array(newLength);\n var sourceIndex = 0;\n\n for (i = 0; i < newLength; sourceIndex++, i++) {\n if (sourceIndex === emulationPreventionBytesPositions[0]) {\n // Skip this byte\n sourceIndex++; // Remove this position index\n\n emulationPreventionBytesPositions.shift();\n }\n\n newData[i] = data[sourceIndex];\n }\n\n return newData;\n };\n /**\n * Read a sequence parameter set and return some interesting video\n * properties. A sequence parameter set is the H264 metadata that\n * describes the properties of upcoming video frames.\n * @param data {Uint8Array} the bytes of a sequence parameter set\n * @return {object} an object with configuration parsed from the\n * sequence parameter set, including the dimensions of the\n * associated video frames.\n */\n\n\n readSequenceParameterSet = function readSequenceParameterSet(data) {\n var frameCropLeftOffset = 0,\n frameCropRightOffset = 0,\n frameCropTopOffset = 0,\n frameCropBottomOffset = 0,\n expGolombDecoder,\n profileIdc,\n levelIdc,\n profileCompatibility,\n chromaFormatIdc,\n picOrderCntType,\n numRefFramesInPicOrderCntCycle,\n picWidthInMbsMinus1,\n picHeightInMapUnitsMinus1,\n frameMbsOnlyFlag,\n scalingListCount,\n sarRatio = [1, 1],\n aspectRatioIdc,\n i;\n expGolombDecoder = new expGolomb(data);\n profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc\n\n profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag\n\n levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)\n\n expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id\n // some profiles have more optional data we don't need\n\n if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {\n chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();\n\n if (chromaFormatIdc === 3) {\n expGolombDecoder.skipBits(1); // separate_colour_plane_flag\n }\n\n expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8\n\n expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8\n\n expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag\n\n if (expGolombDecoder.readBoolean()) {\n // seq_scaling_matrix_present_flag\n scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;\n\n for (i = 0; i < scalingListCount; i++) {\n if (expGolombDecoder.readBoolean()) {\n // seq_scaling_list_present_flag[ i ]\n if (i < 6) {\n skipScalingList(16, expGolombDecoder);\n } else {\n skipScalingList(64, expGolombDecoder);\n }\n }\n }\n }\n }\n\n expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4\n\n picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();\n\n if (picOrderCntType === 0) {\n expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4\n } else if (picOrderCntType === 1) {\n expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag\n\n expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic\n\n expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field\n\n numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();\n\n for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {\n expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]\n }\n }\n\n expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames\n\n expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag\n\n picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n frameMbsOnlyFlag = expGolombDecoder.readBits(1);\n\n if (frameMbsOnlyFlag === 0) {\n expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag\n }\n\n expGolombDecoder.skipBits(1); // direct_8x8_inference_flag\n\n if (expGolombDecoder.readBoolean()) {\n // frame_cropping_flag\n frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();\n }\n\n if (expGolombDecoder.readBoolean()) {\n // vui_parameters_present_flag\n if (expGolombDecoder.readBoolean()) {\n // aspect_ratio_info_present_flag\n aspectRatioIdc = expGolombDecoder.readUnsignedByte();\n\n switch (aspectRatioIdc) {\n case 1:\n sarRatio = [1, 1];\n break;\n\n case 2:\n sarRatio = [12, 11];\n break;\n\n case 3:\n sarRatio = [10, 11];\n break;\n\n case 4:\n sarRatio = [16, 11];\n break;\n\n case 5:\n sarRatio = [40, 33];\n break;\n\n case 6:\n sarRatio = [24, 11];\n break;\n\n case 7:\n sarRatio = [20, 11];\n break;\n\n case 8:\n sarRatio = [32, 11];\n break;\n\n case 9:\n sarRatio = [80, 33];\n break;\n\n case 10:\n sarRatio = [18, 11];\n break;\n\n case 11:\n sarRatio = [15, 11];\n break;\n\n case 12:\n sarRatio = [64, 33];\n break;\n\n case 13:\n sarRatio = [160, 99];\n break;\n\n case 14:\n sarRatio = [4, 3];\n break;\n\n case 15:\n sarRatio = [3, 2];\n break;\n\n case 16:\n sarRatio = [2, 1];\n break;\n\n case 255:\n {\n sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];\n break;\n }\n }\n\n if (sarRatio) {\n sarRatio[0] / sarRatio[1];\n }\n }\n }\n\n return {\n profileIdc: profileIdc,\n levelIdc: levelIdc,\n profileCompatibility: profileCompatibility,\n width: (picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2,\n height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2,\n // sar is sample aspect ratio\n sarRatio: sarRatio\n };\n };\n };\n\n _H264Stream.prototype = new stream();\n var h264 = {\n H264Stream: _H264Stream,\n NalByteStream: _NalByteStream\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about Aac data.\n */\n\n var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n\n var parseId3TagSize = function parseId3TagSize(header, byteIndex) {\n var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],\n flags = header[byteIndex + 5],\n footerPresent = (flags & 16) >> 4; // if we get a negative returnSize clamp it to 0\n\n returnSize = returnSize >= 0 ? returnSize : 0;\n\n if (footerPresent) {\n return returnSize + 20;\n }\n\n return returnSize + 10;\n };\n\n var getId3Offset = function getId3Offset(data, offset) {\n if (data.length - offset < 10 || data[offset] !== 'I'.charCodeAt(0) || data[offset + 1] !== 'D'.charCodeAt(0) || data[offset + 2] !== '3'.charCodeAt(0)) {\n return offset;\n }\n\n offset += parseId3TagSize(data, offset);\n return getId3Offset(data, offset);\n }; // TODO: use vhs-utils\n\n\n var isLikelyAacData$1 = function isLikelyAacData(data) {\n var offset = getId3Offset(data, 0);\n return data.length >= offset + 2 && (data[offset] & 0xFF) === 0xFF && (data[offset + 1] & 0xF0) === 0xF0 && // verify that the 2 layer bits are 0, aka this\n // is not mp3 data but aac data.\n (data[offset + 1] & 0x16) === 0x10;\n };\n\n var parseSyncSafeInteger = function parseSyncSafeInteger(data) {\n return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n }; // return a percent-encoded representation of the specified byte range\n // @see http://en.wikipedia.org/wiki/Percent-encoding\n\n\n var percentEncode = function percentEncode(bytes, start, end) {\n var i,\n result = '';\n\n for (i = start; i < end; i++) {\n result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n }\n\n return result;\n }; // return the string representation of the specified byte range,\n // interpreted as ISO-8859-1.\n\n\n var parseIso88591 = function parseIso88591(bytes, start, end) {\n return unescape(percentEncode(bytes, start, end)); // jshint ignore:line\n };\n\n var parseAdtsSize = function parseAdtsSize(header, byteIndex) {\n var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,\n middle = header[byteIndex + 4] << 3,\n highTwo = header[byteIndex + 3] & 0x3 << 11;\n return highTwo | middle | lowThree;\n };\n\n var parseType$2 = function parseType(header, byteIndex) {\n if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {\n return 'timed-metadata';\n } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {\n return 'audio';\n }\n\n return null;\n };\n\n var parseSampleRate = function parseSampleRate(packet) {\n var i = 0;\n\n while (i + 5 < packet.length) {\n if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {\n // If a valid header was not found, jump one forward and attempt to\n // find a valid ADTS header starting at the next byte\n i++;\n continue;\n }\n\n return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];\n }\n\n return null;\n };\n\n var parseAacTimestamp = function parseAacTimestamp(packet) {\n var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag\n\n frameStart = 10;\n\n if (packet[5] & 0x40) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n\n frameStart += parseSyncSafeInteger(packet.subarray(10, 14));\n } // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n\n do {\n // determine the number of bytes in this frame\n frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));\n\n if (frameSize < 1) {\n return null;\n }\n\n frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);\n\n if (frameHeader === 'PRIV') {\n frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);\n\n for (var i = 0; i < frame.byteLength; i++) {\n if (frame[i] === 0) {\n var owner = parseIso88591(frame, 0, i);\n\n if (owner === 'com.apple.streaming.transportStreamTimestamp') {\n var d = frame.subarray(i + 1);\n var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n size *= 4;\n size += d[7] & 0x03;\n return size;\n }\n\n break;\n }\n }\n }\n\n frameStart += 10; // advance past the frame header\n\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < packet.byteLength);\n\n return null;\n };\n\n var utils = {\n isLikelyAacData: isLikelyAacData$1,\n parseId3TagSize: parseId3TagSize,\n parseAdtsSize: parseAdtsSize,\n parseType: parseType$2,\n parseSampleRate: parseSampleRate,\n parseAacTimestamp: parseAacTimestamp\n };\n\n var _AacStream;\n /**\n * Splits an incoming stream of binary data into ADTS and ID3 Frames.\n */\n\n\n _AacStream = function AacStream() {\n var everything = new Uint8Array(),\n timeStamp = 0;\n\n _AacStream.prototype.init.call(this);\n\n this.setTimestamp = function (timestamp) {\n timeStamp = timestamp;\n };\n\n this.push = function (bytes) {\n var frameSize = 0,\n byteIndex = 0,\n bytesLeft,\n chunk,\n packet,\n tempLength; // If there are bytes remaining from the last segment, prepend them to the\n // bytes that were pushed in\n\n if (everything.length) {\n tempLength = everything.length;\n everything = new Uint8Array(bytes.byteLength + tempLength);\n everything.set(everything.subarray(0, tempLength));\n everything.set(bytes, tempLength);\n } else {\n everything = bytes;\n }\n\n while (everything.length - byteIndex >= 3) {\n if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {\n // Exit early because we don't have enough to parse\n // the ID3 tag header\n if (everything.length - byteIndex < 10) {\n break;\n } // check framesize\n\n\n frameSize = utils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n // Add to byteIndex to support multiple ID3 tags in sequence\n\n if (byteIndex + frameSize > everything.length) {\n break;\n }\n\n chunk = {\n type: 'timed-metadata',\n data: everything.subarray(byteIndex, byteIndex + frameSize)\n };\n this.trigger('data', chunk);\n byteIndex += frameSize;\n continue;\n } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {\n // Exit early because we don't have enough to parse\n // the ADTS frame header\n if (everything.length - byteIndex < 7) {\n break;\n }\n\n frameSize = utils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (byteIndex + frameSize > everything.length) {\n break;\n }\n\n packet = {\n type: 'audio',\n data: everything.subarray(byteIndex, byteIndex + frameSize),\n pts: timeStamp,\n dts: timeStamp\n };\n this.trigger('data', packet);\n byteIndex += frameSize;\n continue;\n }\n\n byteIndex++;\n }\n\n bytesLeft = everything.length - byteIndex;\n\n if (bytesLeft > 0) {\n everything = everything.subarray(byteIndex);\n } else {\n everything = new Uint8Array();\n }\n };\n\n this.reset = function () {\n everything = new Uint8Array();\n this.trigger('reset');\n };\n\n this.endTimeline = function () {\n everything = new Uint8Array();\n this.trigger('endedtimeline');\n };\n };\n\n _AacStream.prototype = new stream();\n var aac = _AacStream; // constants\n\n var AUDIO_PROPERTIES = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];\n var audioProperties = AUDIO_PROPERTIES;\n var VIDEO_PROPERTIES = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility', 'sarRatio'];\n var videoProperties = VIDEO_PROPERTIES;\n var H264Stream = h264.H264Stream;\n var isLikelyAacData = utils.isLikelyAacData;\n var ONE_SECOND_IN_TS$1 = clock.ONE_SECOND_IN_TS; // object types\n\n var _VideoSegmentStream, _AudioSegmentStream, _Transmuxer, _CoalesceStream;\n\n var retriggerForStream = function retriggerForStream(key, event) {\n event.stream = key;\n this.trigger('log', event);\n };\n\n var addPipelineLogRetriggers = function addPipelineLogRetriggers(transmuxer, pipeline) {\n var keys = Object.keys(pipeline);\n\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i]; // skip non-stream keys and headOfPipeline\n // which is just a duplicate\n\n if (key === 'headOfPipeline' || !pipeline[key].on) {\n continue;\n }\n\n pipeline[key].on('log', retriggerForStream.bind(transmuxer, key));\n }\n };\n /**\n * Compare two arrays (even typed) for same-ness\n */\n\n\n var arrayEquals = function arrayEquals(a, b) {\n var i;\n\n if (a.length !== b.length) {\n return false;\n } // compare the value of each element in the array\n\n\n for (i = 0; i < a.length; i++) {\n if (a[i] !== b[i]) {\n return false;\n }\n }\n\n return true;\n };\n\n var generateSegmentTimingInfo = function generateSegmentTimingInfo(baseMediaDecodeTime, startDts, startPts, endDts, endPts, prependedContentDuration) {\n var ptsOffsetFromDts = startPts - startDts,\n decodeDuration = endDts - startDts,\n presentationDuration = endPts - startPts; // The PTS and DTS values are based on the actual stream times from the segment,\n // however, the player time values will reflect a start from the baseMediaDecodeTime.\n // In order to provide relevant values for the player times, base timing info on the\n // baseMediaDecodeTime and the DTS and PTS durations of the segment.\n\n return {\n start: {\n dts: baseMediaDecodeTime,\n pts: baseMediaDecodeTime + ptsOffsetFromDts\n },\n end: {\n dts: baseMediaDecodeTime + decodeDuration,\n pts: baseMediaDecodeTime + presentationDuration\n },\n prependedContentDuration: prependedContentDuration,\n baseMediaDecodeTime: baseMediaDecodeTime\n };\n };\n /**\n * Constructs a single-track, ISO BMFF media segment from AAC data\n * events. The output of this stream can be fed to a SourceBuffer\n * configured with a suitable initialization segment.\n * @param track {object} track metadata configuration\n * @param options {object} transmuxer options object\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at 0.\n */\n\n\n _AudioSegmentStream = function AudioSegmentStream(track, options) {\n var adtsFrames = [],\n sequenceNumber,\n earliestAllowedDts = 0,\n audioAppendStartTs = 0,\n videoBaseMediaDecodeTime = Infinity;\n options = options || {};\n sequenceNumber = options.firstSequenceNumber || 0;\n\n _AudioSegmentStream.prototype.init.call(this);\n\n this.push = function (data) {\n trackDecodeInfo.collectDtsInfo(track, data);\n\n if (track) {\n audioProperties.forEach(function (prop) {\n track[prop] = data[prop];\n });\n } // buffer audio data until end() is called\n\n\n adtsFrames.push(data);\n };\n\n this.setEarliestDts = function (earliestDts) {\n earliestAllowedDts = earliestDts;\n };\n\n this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n videoBaseMediaDecodeTime = baseMediaDecodeTime;\n };\n\n this.setAudioAppendStart = function (timestamp) {\n audioAppendStartTs = timestamp;\n };\n\n this.flush = function () {\n var frames, moof, mdat, boxes, frameDuration, segmentDuration, videoClockCyclesOfSilencePrefixed; // return early if no audio data has been observed\n\n if (adtsFrames.length === 0) {\n this.trigger('done', 'AudioSegmentStream');\n return;\n }\n\n frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);\n track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); // amount of audio filled but the value is in video clock rather than audio clock\n\n videoClockCyclesOfSilencePrefixed = audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to\n // samples (that is, adts frames) in the audio data\n\n track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat\n\n mdat = mp4Generator.mdat(audioFrameUtils.concatenateFrameData(frames));\n adtsFrames = [];\n moof = mp4Generator.moof(sequenceNumber, [track]);\n boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time\n\n sequenceNumber++;\n boxes.set(moof);\n boxes.set(mdat, moof.byteLength);\n trackDecodeInfo.clearDtsInfo(track);\n frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 * 1024 / track.samplerate); // TODO this check was added to maintain backwards compatibility (particularly with\n // tests) on adding the timingInfo event. However, it seems unlikely that there's a\n // valid use-case where an init segment/data should be triggered without associated\n // frames. Leaving for now, but should be looked into.\n\n if (frames.length) {\n segmentDuration = frames.length * frameDuration;\n this.trigger('segmentTimingInfo', generateSegmentTimingInfo( // The audio track's baseMediaDecodeTime is in audio clock cycles, but the\n // frame info is in video clock cycles. Convert to match expectation of\n // listeners (that all timestamps will be based on video clock cycles).\n clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate), // frame times are already in video clock, as is segment duration\n frames[0].dts, frames[0].pts, frames[0].dts + segmentDuration, frames[0].pts + segmentDuration, videoClockCyclesOfSilencePrefixed || 0));\n this.trigger('timingInfo', {\n start: frames[0].pts,\n end: frames[0].pts + segmentDuration\n });\n }\n\n this.trigger('data', {\n track: track,\n boxes: boxes\n });\n this.trigger('done', 'AudioSegmentStream');\n };\n\n this.reset = function () {\n trackDecodeInfo.clearDtsInfo(track);\n adtsFrames = [];\n this.trigger('reset');\n };\n };\n\n _AudioSegmentStream.prototype = new stream();\n /**\n * Constructs a single-track, ISO BMFF media segment from H264 data\n * events. The output of this stream can be fed to a SourceBuffer\n * configured with a suitable initialization segment.\n * @param track {object} track metadata configuration\n * @param options {object} transmuxer options object\n * @param options.alignGopsAtEnd {boolean} If true, start from the end of the\n * gopsToAlignWith list when attempting to align gop pts\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at 0.\n */\n\n _VideoSegmentStream = function VideoSegmentStream(track, options) {\n var sequenceNumber,\n nalUnits = [],\n gopsToAlignWith = [],\n config,\n pps;\n options = options || {};\n sequenceNumber = options.firstSequenceNumber || 0;\n\n _VideoSegmentStream.prototype.init.call(this);\n\n delete track.minPTS;\n this.gopCache_ = [];\n /**\n * Constructs a ISO BMFF segment given H264 nalUnits\n * @param {Object} nalUnit A data event representing a nalUnit\n * @param {String} nalUnit.nalUnitType\n * @param {Object} nalUnit.config Properties for a mp4 track\n * @param {Uint8Array} nalUnit.data The nalUnit bytes\n * @see lib/codecs/h264.js\n **/\n\n this.push = function (nalUnit) {\n trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config\n\n if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {\n config = nalUnit.config;\n track.sps = [nalUnit.data];\n videoProperties.forEach(function (prop) {\n track[prop] = config[prop];\n }, this);\n }\n\n if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {\n pps = nalUnit.data;\n track.pps = [nalUnit.data];\n } // buffer video until flush() is called\n\n\n nalUnits.push(nalUnit);\n };\n /**\n * Pass constructed ISO BMFF track and boxes on to the\n * next stream in the pipeline\n **/\n\n\n this.flush = function () {\n var frames,\n gopForFusion,\n gops,\n moof,\n mdat,\n boxes,\n prependedContentDuration = 0,\n firstGop,\n lastGop; // Throw away nalUnits at the start of the byte stream until\n // we find the first AUD\n\n while (nalUnits.length) {\n if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {\n break;\n }\n\n nalUnits.shift();\n } // Return early if no video data has been observed\n\n\n if (nalUnits.length === 0) {\n this.resetStream_();\n this.trigger('done', 'VideoSegmentStream');\n return;\n } // Organize the raw nal-units into arrays that represent\n // higher-level constructs such as frames and gops\n // (group-of-pictures)\n\n\n frames = frameUtils.groupNalsIntoFrames(nalUnits);\n gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have\n // a problem since MSE (on Chrome) requires a leading keyframe.\n //\n // We have two approaches to repairing this situation:\n // 1) GOP-FUSION:\n // This is where we keep track of the GOPS (group-of-pictures)\n // from previous fragments and attempt to find one that we can\n // prepend to the current fragment in order to create a valid\n // fragment.\n // 2) KEYFRAME-PULLING:\n // Here we search for the first keyframe in the fragment and\n // throw away all the frames between the start of the fragment\n // and that keyframe. We then extend the duration and pull the\n // PTS of the keyframe forward so that it covers the time range\n // of the frames that were disposed of.\n //\n // #1 is far prefereable over #2 which can cause \"stuttering\" but\n // requires more things to be just right.\n\n if (!gops[0][0].keyFrame) {\n // Search for a gop for fusion from our gopCache\n gopForFusion = this.getGopForFusion_(nalUnits[0], track);\n\n if (gopForFusion) {\n // in order to provide more accurate timing information about the segment, save\n // the number of seconds prepended to the original segment due to GOP fusion\n prependedContentDuration = gopForFusion.duration;\n gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the\n // new gop at the beginning\n\n gops.byteLength += gopForFusion.byteLength;\n gops.nalCount += gopForFusion.nalCount;\n gops.pts = gopForFusion.pts;\n gops.dts = gopForFusion.dts;\n gops.duration += gopForFusion.duration;\n } else {\n // If we didn't find a candidate gop fall back to keyframe-pulling\n gops = frameUtils.extendFirstKeyFrame(gops);\n }\n } // Trim gops to align with gopsToAlignWith\n\n\n if (gopsToAlignWith.length) {\n var alignedGops;\n\n if (options.alignGopsAtEnd) {\n alignedGops = this.alignGopsAtEnd_(gops);\n } else {\n alignedGops = this.alignGopsAtStart_(gops);\n }\n\n if (!alignedGops) {\n // save all the nals in the last GOP into the gop cache\n this.gopCache_.unshift({\n gop: gops.pop(),\n pps: track.pps,\n sps: track.sps\n }); // Keep a maximum of 6 GOPs in the cache\n\n this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith\n\n this.resetStream_();\n this.trigger('done', 'VideoSegmentStream');\n return;\n } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct\n // when recalculated before sending off to CoalesceStream\n\n\n trackDecodeInfo.clearDtsInfo(track);\n gops = alignedGops;\n }\n\n trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to\n // samples (that is, frames) in the video data\n\n track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat\n\n mdat = mp4Generator.mdat(frameUtils.concatenateNalData(gops));\n track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n this.trigger('processedGopsInfo', gops.map(function (gop) {\n return {\n pts: gop.pts,\n dts: gop.dts,\n byteLength: gop.byteLength\n };\n }));\n firstGop = gops[0];\n lastGop = gops[gops.length - 1];\n this.trigger('segmentTimingInfo', generateSegmentTimingInfo(track.baseMediaDecodeTime, firstGop.dts, firstGop.pts, lastGop.dts + lastGop.duration, lastGop.pts + lastGop.duration, prependedContentDuration));\n this.trigger('timingInfo', {\n start: gops[0].pts,\n end: gops[gops.length - 1].pts + gops[gops.length - 1].duration\n }); // save all the nals in the last GOP into the gop cache\n\n this.gopCache_.unshift({\n gop: gops.pop(),\n pps: track.pps,\n sps: track.sps\n }); // Keep a maximum of 6 GOPs in the cache\n\n this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n nalUnits = [];\n this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);\n this.trigger('timelineStartInfo', track.timelineStartInfo);\n moof = mp4Generator.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of\n // throwing away hundreds of media segment fragments\n\n boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time\n\n sequenceNumber++;\n boxes.set(moof);\n boxes.set(mdat, moof.byteLength);\n this.trigger('data', {\n track: track,\n boxes: boxes\n });\n this.resetStream_(); // Continue with the flush process now\n\n this.trigger('done', 'VideoSegmentStream');\n };\n\n this.reset = function () {\n this.resetStream_();\n nalUnits = [];\n this.gopCache_.length = 0;\n gopsToAlignWith.length = 0;\n this.trigger('reset');\n };\n\n this.resetStream_ = function () {\n trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments\n // for instance, when we are rendition switching\n\n config = undefined;\n pps = undefined;\n }; // Search for a candidate Gop for gop-fusion from the gop cache and\n // return it or return null if no good candidate was found\n\n\n this.getGopForFusion_ = function (nalUnit) {\n var halfSecond = 45000,\n // Half-a-second in a 90khz clock\n allowableOverlap = 10000,\n // About 3 frames @ 30fps\n nearestDistance = Infinity,\n dtsDistance,\n nearestGopObj,\n currentGop,\n currentGopObj,\n i; // Search for the GOP nearest to the beginning of this nal unit\n\n for (i = 0; i < this.gopCache_.length; i++) {\n currentGopObj = this.gopCache_[i];\n currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS\n\n if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {\n continue;\n } // Reject Gops that would require a negative baseMediaDecodeTime\n\n\n if (currentGop.dts < track.timelineStartInfo.dts) {\n continue;\n } // The distance between the end of the gop and the start of the nalUnit\n\n\n dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within\n // a half-second of the nal unit\n\n if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {\n // Always use the closest GOP we found if there is more than\n // one candidate\n if (!nearestGopObj || nearestDistance > dtsDistance) {\n nearestGopObj = currentGopObj;\n nearestDistance = dtsDistance;\n }\n }\n }\n\n if (nearestGopObj) {\n return nearestGopObj.gop;\n }\n\n return null;\n }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n // of gopsToAlignWith starting from the START of the list\n\n\n this.alignGopsAtStart_ = function (gops) {\n var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;\n byteLength = gops.byteLength;\n nalCount = gops.nalCount;\n duration = gops.duration;\n alignIndex = gopIndex = 0;\n\n while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {\n align = gopsToAlignWith[alignIndex];\n gop = gops[gopIndex];\n\n if (align.pts === gop.pts) {\n break;\n }\n\n if (gop.pts > align.pts) {\n // this current gop starts after the current gop we want to align on, so increment\n // align index\n alignIndex++;\n continue;\n } // current gop starts before the current gop we want to align on. so increment gop\n // index\n\n\n gopIndex++;\n byteLength -= gop.byteLength;\n nalCount -= gop.nalCount;\n duration -= gop.duration;\n }\n\n if (gopIndex === 0) {\n // no gops to trim\n return gops;\n }\n\n if (gopIndex === gops.length) {\n // all gops trimmed, skip appending all gops\n return null;\n }\n\n alignedGops = gops.slice(gopIndex);\n alignedGops.byteLength = byteLength;\n alignedGops.duration = duration;\n alignedGops.nalCount = nalCount;\n alignedGops.pts = alignedGops[0].pts;\n alignedGops.dts = alignedGops[0].dts;\n return alignedGops;\n }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n // of gopsToAlignWith starting from the END of the list\n\n\n this.alignGopsAtEnd_ = function (gops) {\n var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;\n alignIndex = gopsToAlignWith.length - 1;\n gopIndex = gops.length - 1;\n alignEndIndex = null;\n matchFound = false;\n\n while (alignIndex >= 0 && gopIndex >= 0) {\n align = gopsToAlignWith[alignIndex];\n gop = gops[gopIndex];\n\n if (align.pts === gop.pts) {\n matchFound = true;\n break;\n }\n\n if (align.pts > gop.pts) {\n alignIndex--;\n continue;\n }\n\n if (alignIndex === gopsToAlignWith.length - 1) {\n // gop.pts is greater than the last alignment candidate. If no match is found\n // by the end of this loop, we still want to append gops that come after this\n // point\n alignEndIndex = gopIndex;\n }\n\n gopIndex--;\n }\n\n if (!matchFound && alignEndIndex === null) {\n return null;\n }\n\n var trimIndex;\n\n if (matchFound) {\n trimIndex = gopIndex;\n } else {\n trimIndex = alignEndIndex;\n }\n\n if (trimIndex === 0) {\n return gops;\n }\n\n var alignedGops = gops.slice(trimIndex);\n var metadata = alignedGops.reduce(function (total, gop) {\n total.byteLength += gop.byteLength;\n total.duration += gop.duration;\n total.nalCount += gop.nalCount;\n return total;\n }, {\n byteLength: 0,\n duration: 0,\n nalCount: 0\n });\n alignedGops.byteLength = metadata.byteLength;\n alignedGops.duration = metadata.duration;\n alignedGops.nalCount = metadata.nalCount;\n alignedGops.pts = alignedGops[0].pts;\n alignedGops.dts = alignedGops[0].dts;\n return alignedGops;\n };\n\n this.alignGopsWith = function (newGopsToAlignWith) {\n gopsToAlignWith = newGopsToAlignWith;\n };\n };\n\n _VideoSegmentStream.prototype = new stream();\n /**\n * A Stream that can combine multiple streams (ie. audio & video)\n * into a single output segment for MSE. Also supports audio-only\n * and video-only streams.\n * @param options {object} transmuxer options object\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at media timeline start.\n */\n\n _CoalesceStream = function CoalesceStream(options, metadataStream) {\n // Number of Tracks per output segment\n // If greater than 1, we combine multiple\n // tracks into a single segment\n this.numberOfTracks = 0;\n this.metadataStream = metadataStream;\n options = options || {};\n\n if (typeof options.remux !== 'undefined') {\n this.remuxTracks = !!options.remux;\n } else {\n this.remuxTracks = true;\n }\n\n if (typeof options.keepOriginalTimestamps === 'boolean') {\n this.keepOriginalTimestamps = options.keepOriginalTimestamps;\n } else {\n this.keepOriginalTimestamps = false;\n }\n\n this.pendingTracks = [];\n this.videoTrack = null;\n this.pendingBoxes = [];\n this.pendingCaptions = [];\n this.pendingMetadata = [];\n this.pendingBytes = 0;\n this.emittedTracks = 0;\n\n _CoalesceStream.prototype.init.call(this); // Take output from multiple\n\n\n this.push = function (output) {\n // buffer incoming captions until the associated video segment\n // finishes\n if (output.text) {\n return this.pendingCaptions.push(output);\n } // buffer incoming id3 tags until the final flush\n\n\n if (output.frames) {\n return this.pendingMetadata.push(output);\n } // Add this track to the list of pending tracks and store\n // important information required for the construction of\n // the final segment\n\n\n this.pendingTracks.push(output.track);\n this.pendingBytes += output.boxes.byteLength; // TODO: is there an issue for this against chrome?\n // We unshift audio and push video because\n // as of Chrome 75 when switching from\n // one init segment to another if the video\n // mdat does not appear after the audio mdat\n // only audio will play for the duration of our transmux.\n\n if (output.track.type === 'video') {\n this.videoTrack = output.track;\n this.pendingBoxes.push(output.boxes);\n }\n\n if (output.track.type === 'audio') {\n this.audioTrack = output.track;\n this.pendingBoxes.unshift(output.boxes);\n }\n };\n };\n\n _CoalesceStream.prototype = new stream();\n\n _CoalesceStream.prototype.flush = function (flushSource) {\n var offset = 0,\n event = {\n captions: [],\n captionStreams: {},\n metadata: [],\n info: {}\n },\n caption,\n id3,\n initSegment,\n timelineStartPts = 0,\n i;\n\n if (this.pendingTracks.length < this.numberOfTracks) {\n if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {\n // Return because we haven't received a flush from a data-generating\n // portion of the segment (meaning that we have only recieved meta-data\n // or captions.)\n return;\n } else if (this.remuxTracks) {\n // Return until we have enough tracks from the pipeline to remux (if we\n // are remuxing audio and video into a single MP4)\n return;\n } else if (this.pendingTracks.length === 0) {\n // In the case where we receive a flush without any data having been\n // received we consider it an emitted track for the purposes of coalescing\n // `done` events.\n // We do this for the case where there is an audio and video track in the\n // segment but no audio data. (seen in several playlists with alternate\n // audio tracks and no audio present in the main TS segments.)\n this.emittedTracks++;\n\n if (this.emittedTracks >= this.numberOfTracks) {\n this.trigger('done');\n this.emittedTracks = 0;\n }\n\n return;\n }\n }\n\n if (this.videoTrack) {\n timelineStartPts = this.videoTrack.timelineStartInfo.pts;\n videoProperties.forEach(function (prop) {\n event.info[prop] = this.videoTrack[prop];\n }, this);\n } else if (this.audioTrack) {\n timelineStartPts = this.audioTrack.timelineStartInfo.pts;\n audioProperties.forEach(function (prop) {\n event.info[prop] = this.audioTrack[prop];\n }, this);\n }\n\n if (this.videoTrack || this.audioTrack) {\n if (this.pendingTracks.length === 1) {\n event.type = this.pendingTracks[0].type;\n } else {\n event.type = 'combined';\n }\n\n this.emittedTracks += this.pendingTracks.length;\n initSegment = mp4Generator.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment\n\n event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov\n // and track definitions\n\n event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats\n\n event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together\n\n for (i = 0; i < this.pendingBoxes.length; i++) {\n event.data.set(this.pendingBoxes[i], offset);\n offset += this.pendingBoxes[i].byteLength;\n } // Translate caption PTS times into second offsets to match the\n // video timeline for the segment, and add track info\n\n\n for (i = 0; i < this.pendingCaptions.length; i++) {\n caption = this.pendingCaptions[i];\n caption.startTime = clock.metadataTsToSeconds(caption.startPts, timelineStartPts, this.keepOriginalTimestamps);\n caption.endTime = clock.metadataTsToSeconds(caption.endPts, timelineStartPts, this.keepOriginalTimestamps);\n event.captionStreams[caption.stream] = true;\n event.captions.push(caption);\n } // Translate ID3 frame PTS times into second offsets to match the\n // video timeline for the segment\n\n\n for (i = 0; i < this.pendingMetadata.length; i++) {\n id3 = this.pendingMetadata[i];\n id3.cueTime = clock.metadataTsToSeconds(id3.pts, timelineStartPts, this.keepOriginalTimestamps);\n event.metadata.push(id3);\n } // We add this to every single emitted segment even though we only need\n // it for the first\n\n\n event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state\n\n this.pendingTracks.length = 0;\n this.videoTrack = null;\n this.pendingBoxes.length = 0;\n this.pendingCaptions.length = 0;\n this.pendingBytes = 0;\n this.pendingMetadata.length = 0; // Emit the built segment\n // We include captions and ID3 tags for backwards compatibility,\n // ideally we should send only video and audio in the data event\n\n this.trigger('data', event); // Emit each caption to the outside world\n // Ideally, this would happen immediately on parsing captions,\n // but we need to ensure that video data is sent back first\n // so that caption timing can be adjusted to match video timing\n\n for (i = 0; i < event.captions.length; i++) {\n caption = event.captions[i];\n this.trigger('caption', caption);\n } // Emit each id3 tag to the outside world\n // Ideally, this would happen immediately on parsing the tag,\n // but we need to ensure that video data is sent back first\n // so that ID3 frame timing can be adjusted to match video timing\n\n\n for (i = 0; i < event.metadata.length; i++) {\n id3 = event.metadata[i];\n this.trigger('id3Frame', id3);\n }\n } // Only emit `done` if all tracks have been flushed and emitted\n\n\n if (this.emittedTracks >= this.numberOfTracks) {\n this.trigger('done');\n this.emittedTracks = 0;\n }\n };\n\n _CoalesceStream.prototype.setRemux = function (val) {\n this.remuxTracks = val;\n };\n /**\n * A Stream that expects MP2T binary data as input and produces\n * corresponding media segments, suitable for use with Media Source\n * Extension (MSE) implementations that support the ISO BMFF byte\n * stream format, like Chrome.\n */\n\n\n _Transmuxer = function Transmuxer(options) {\n var self = this,\n hasFlushed = true,\n videoTrack,\n audioTrack;\n\n _Transmuxer.prototype.init.call(this);\n\n options = options || {};\n this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;\n this.transmuxPipeline_ = {};\n\n this.setupAacPipeline = function () {\n var pipeline = {};\n this.transmuxPipeline_ = pipeline;\n pipeline.type = 'aac';\n pipeline.metadataStream = new m2ts_1.MetadataStream(); // set up the parsing pipeline\n\n pipeline.aacStream = new aac();\n pipeline.audioTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('audio');\n pipeline.timedMetadataTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('timed-metadata');\n pipeline.adtsStream = new adts();\n pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream);\n pipeline.headOfPipeline = pipeline.aacStream;\n pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);\n pipeline.metadataStream.on('timestamp', function (frame) {\n pipeline.aacStream.setTimestamp(frame.timeStamp);\n });\n pipeline.aacStream.on('data', function (data) {\n if (data.type !== 'timed-metadata' && data.type !== 'audio' || pipeline.audioSegmentStream) {\n return;\n }\n\n audioTrack = audioTrack || {\n timelineStartInfo: {\n baseMediaDecodeTime: self.baseMediaDecodeTime\n },\n codec: 'adts',\n type: 'audio'\n }; // hook up the audio segment stream to the first track with aac data\n\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options);\n pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo')); // Set up the final part of the audio pipeline\n\n pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); // emit pmt info\n\n self.trigger('trackinfo', {\n hasAudio: !!audioTrack,\n hasVideo: !!videoTrack\n });\n }); // Re-emit any data coming from the coalesce stream to the outside world\n\n pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n addPipelineLogRetriggers(this, pipeline);\n };\n\n this.setupTsPipeline = function () {\n var pipeline = {};\n this.transmuxPipeline_ = pipeline;\n pipeline.type = 'ts';\n pipeline.metadataStream = new m2ts_1.MetadataStream(); // set up the parsing pipeline\n\n pipeline.packetStream = new m2ts_1.TransportPacketStream();\n pipeline.parseStream = new m2ts_1.TransportParseStream();\n pipeline.elementaryStream = new m2ts_1.ElementaryStream();\n pipeline.timestampRolloverStream = new m2ts_1.TimestampRolloverStream();\n pipeline.adtsStream = new adts();\n pipeline.h264Stream = new H264Stream();\n pipeline.captionStream = new m2ts_1.CaptionStream(options);\n pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream);\n pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams\n\n pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream); // !!THIS ORDER IS IMPORTANT!!\n // demux the streams\n\n pipeline.timestampRolloverStream.pipe(pipeline.h264Stream);\n pipeline.timestampRolloverStream.pipe(pipeline.adtsStream);\n pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream\n\n pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);\n pipeline.elementaryStream.on('data', function (data) {\n var i;\n\n if (data.type === 'metadata') {\n i = data.tracks.length; // scan the tracks listed in the metadata\n\n while (i--) {\n if (!videoTrack && data.tracks[i].type === 'video') {\n videoTrack = data.tracks[i];\n videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n } else if (!audioTrack && data.tracks[i].type === 'audio') {\n audioTrack = data.tracks[i];\n audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n }\n } // hook up the video segment stream to the first track with h264 data\n\n\n if (videoTrack && !pipeline.videoSegmentStream) {\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.videoSegmentStream = new _VideoSegmentStream(videoTrack, options);\n pipeline.videoSegmentStream.on('log', self.getLogTrigger_('videoSegmentStream'));\n pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {\n // When video emits timelineStartInfo data after a flush, we forward that\n // info to the AudioSegmentStream, if it exists, because video timeline\n // data takes precedence. Do not do this if keepOriginalTimestamps is set,\n // because this is a particularly subtle form of timestamp alteration.\n if (audioTrack && !options.keepOriginalTimestamps) {\n audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the\n // very earliest DTS we have seen in video because Chrome will\n // interpret any video track with a baseMediaDecodeTime that is\n // non-zero as a gap.\n\n pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts - self.baseMediaDecodeTime);\n }\n });\n pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));\n pipeline.videoSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'videoSegmentTimingInfo'));\n pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {\n if (audioTrack) {\n pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);\n }\n });\n pipeline.videoSegmentStream.on('timingInfo', self.trigger.bind(self, 'videoTimingInfo')); // Set up the final part of the video pipeline\n\n pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);\n }\n\n if (audioTrack && !pipeline.audioSegmentStream) {\n // hook up the audio segment stream to the first track with aac data\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options);\n pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo'));\n pipeline.audioSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'audioSegmentTimingInfo')); // Set up the final part of the audio pipeline\n\n pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n } // emit pmt info\n\n\n self.trigger('trackinfo', {\n hasAudio: !!audioTrack,\n hasVideo: !!videoTrack\n });\n }\n }); // Re-emit any data coming from the coalesce stream to the outside world\n\n pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));\n pipeline.coalesceStream.on('id3Frame', function (id3Frame) {\n id3Frame.dispatchType = pipeline.metadataStream.dispatchType;\n self.trigger('id3Frame', id3Frame);\n });\n pipeline.coalesceStream.on('caption', this.trigger.bind(this, 'caption')); // Let the consumer know we have finished flushing the entire pipeline\n\n pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n addPipelineLogRetriggers(this, pipeline);\n }; // hook up the segment streams once track metadata is delivered\n\n\n this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n var pipeline = this.transmuxPipeline_;\n\n if (!options.keepOriginalTimestamps) {\n this.baseMediaDecodeTime = baseMediaDecodeTime;\n }\n\n if (audioTrack) {\n audioTrack.timelineStartInfo.dts = undefined;\n audioTrack.timelineStartInfo.pts = undefined;\n trackDecodeInfo.clearDtsInfo(audioTrack);\n\n if (pipeline.audioTimestampRolloverStream) {\n pipeline.audioTimestampRolloverStream.discontinuity();\n }\n }\n\n if (videoTrack) {\n if (pipeline.videoSegmentStream) {\n pipeline.videoSegmentStream.gopCache_ = [];\n }\n\n videoTrack.timelineStartInfo.dts = undefined;\n videoTrack.timelineStartInfo.pts = undefined;\n trackDecodeInfo.clearDtsInfo(videoTrack);\n pipeline.captionStream.reset();\n }\n\n if (pipeline.timestampRolloverStream) {\n pipeline.timestampRolloverStream.discontinuity();\n }\n };\n\n this.setAudioAppendStart = function (timestamp) {\n if (audioTrack) {\n this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);\n }\n };\n\n this.setRemux = function (val) {\n var pipeline = this.transmuxPipeline_;\n options.remux = val;\n\n if (pipeline && pipeline.coalesceStream) {\n pipeline.coalesceStream.setRemux(val);\n }\n };\n\n this.alignGopsWith = function (gopsToAlignWith) {\n if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {\n this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);\n }\n };\n\n this.getLogTrigger_ = function (key) {\n var self = this;\n return function (event) {\n event.stream = key;\n self.trigger('log', event);\n };\n }; // feed incoming data to the front of the parsing pipeline\n\n\n this.push = function (data) {\n if (hasFlushed) {\n var isAac = isLikelyAacData(data);\n\n if (isAac && this.transmuxPipeline_.type !== 'aac') {\n this.setupAacPipeline();\n } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {\n this.setupTsPipeline();\n }\n\n hasFlushed = false;\n }\n\n this.transmuxPipeline_.headOfPipeline.push(data);\n }; // flush any buffered data\n\n\n this.flush = function () {\n hasFlushed = true; // Start at the top of the pipeline and flush all pending work\n\n this.transmuxPipeline_.headOfPipeline.flush();\n };\n\n this.endTimeline = function () {\n this.transmuxPipeline_.headOfPipeline.endTimeline();\n };\n\n this.reset = function () {\n if (this.transmuxPipeline_.headOfPipeline) {\n this.transmuxPipeline_.headOfPipeline.reset();\n }\n }; // Caption data has to be reset when seeking outside buffered range\n\n\n this.resetCaptions = function () {\n if (this.transmuxPipeline_.captionStream) {\n this.transmuxPipeline_.captionStream.reset();\n }\n };\n };\n\n _Transmuxer.prototype = new stream();\n var transmuxer = {\n Transmuxer: _Transmuxer,\n VideoSegmentStream: _VideoSegmentStream,\n AudioSegmentStream: _AudioSegmentStream,\n AUDIO_PROPERTIES: audioProperties,\n VIDEO_PROPERTIES: videoProperties,\n // exported for testing\n generateSegmentTimingInfo: generateSegmentTimingInfo\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var toUnsigned$3 = function toUnsigned(value) {\n return value >>> 0;\n };\n\n var toHexString$1 = function toHexString(value) {\n return ('00' + value.toString(16)).slice(-2);\n };\n\n var bin = {\n toUnsigned: toUnsigned$3,\n toHexString: toHexString$1\n };\n\n var parseType$1 = function parseType(buffer) {\n var result = '';\n result += String.fromCharCode(buffer[0]);\n result += String.fromCharCode(buffer[1]);\n result += String.fromCharCode(buffer[2]);\n result += String.fromCharCode(buffer[3]);\n return result;\n };\n\n var parseType_1 = parseType$1;\n var toUnsigned$2 = bin.toUnsigned;\n\n var findBox = function findBox(data, path) {\n var results = [],\n i,\n size,\n type,\n end,\n subresults;\n\n if (!path.length) {\n // short-circuit the search for empty paths\n return null;\n }\n\n for (i = 0; i < data.byteLength;) {\n size = toUnsigned$2(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);\n type = parseType_1(data.subarray(i + 4, i + 8));\n end = size > 1 ? i + size : data.byteLength;\n\n if (type === path[0]) {\n if (path.length === 1) {\n // this is the end of the path and we've found the box we were\n // looking for\n results.push(data.subarray(i + 8, end));\n } else {\n // recursively search for the next box along the path\n subresults = findBox(data.subarray(i + 8, end), path.slice(1));\n\n if (subresults.length) {\n results = results.concat(subresults);\n }\n }\n }\n\n i = end;\n } // we've finished searching all of data\n\n\n return results;\n };\n\n var findBox_1 = findBox;\n var toUnsigned$1 = bin.toUnsigned;\n var getUint64$1 = numbers.getUint64;\n\n var tfdt = function tfdt(data) {\n var result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4))\n };\n\n if (result.version === 1) {\n result.baseMediaDecodeTime = getUint64$1(data.subarray(4));\n } else {\n result.baseMediaDecodeTime = toUnsigned$1(data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]);\n }\n\n return result;\n };\n\n var parseTfdt = tfdt;\n\n var parseSampleFlags = function parseSampleFlags(flags) {\n return {\n isLeading: (flags[0] & 0x0c) >>> 2,\n dependsOn: flags[0] & 0x03,\n isDependedOn: (flags[1] & 0xc0) >>> 6,\n hasRedundancy: (flags[1] & 0x30) >>> 4,\n paddingValue: (flags[1] & 0x0e) >>> 1,\n isNonSyncSample: flags[1] & 0x01,\n degradationPriority: flags[2] << 8 | flags[3]\n };\n };\n\n var parseSampleFlags_1 = parseSampleFlags;\n\n var trun = function trun(data) {\n var result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n samples: []\n },\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n // Flag interpretation\n dataOffsetPresent = result.flags[2] & 0x01,\n // compare with 2nd byte of 0x1\n firstSampleFlagsPresent = result.flags[2] & 0x04,\n // compare with 2nd byte of 0x4\n sampleDurationPresent = result.flags[1] & 0x01,\n // compare with 2nd byte of 0x100\n sampleSizePresent = result.flags[1] & 0x02,\n // compare with 2nd byte of 0x200\n sampleFlagsPresent = result.flags[1] & 0x04,\n // compare with 2nd byte of 0x400\n sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,\n // compare with 2nd byte of 0x800\n sampleCount = view.getUint32(4),\n offset = 8,\n sample;\n\n if (dataOffsetPresent) {\n // 32 bit signed integer\n result.dataOffset = view.getInt32(offset);\n offset += 4;\n } // Overrides the flags for the first sample only. The order of\n // optional values will be: duration, size, compositionTimeOffset\n\n\n if (firstSampleFlagsPresent && sampleCount) {\n sample = {\n flags: parseSampleFlags_1(data.subarray(offset, offset + 4))\n };\n offset += 4;\n\n if (sampleDurationPresent) {\n sample.duration = view.getUint32(offset);\n offset += 4;\n }\n\n if (sampleSizePresent) {\n sample.size = view.getUint32(offset);\n offset += 4;\n }\n\n if (sampleCompositionTimeOffsetPresent) {\n if (result.version === 1) {\n sample.compositionTimeOffset = view.getInt32(offset);\n } else {\n sample.compositionTimeOffset = view.getUint32(offset);\n }\n\n offset += 4;\n }\n\n result.samples.push(sample);\n sampleCount--;\n }\n\n while (sampleCount--) {\n sample = {};\n\n if (sampleDurationPresent) {\n sample.duration = view.getUint32(offset);\n offset += 4;\n }\n\n if (sampleSizePresent) {\n sample.size = view.getUint32(offset);\n offset += 4;\n }\n\n if (sampleFlagsPresent) {\n sample.flags = parseSampleFlags_1(data.subarray(offset, offset + 4));\n offset += 4;\n }\n\n if (sampleCompositionTimeOffsetPresent) {\n if (result.version === 1) {\n sample.compositionTimeOffset = view.getInt32(offset);\n } else {\n sample.compositionTimeOffset = view.getUint32(offset);\n }\n\n offset += 4;\n }\n\n result.samples.push(sample);\n }\n\n return result;\n };\n\n var parseTrun = trun;\n\n var tfhd = function tfhd(data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n trackId: view.getUint32(4)\n },\n baseDataOffsetPresent = result.flags[2] & 0x01,\n sampleDescriptionIndexPresent = result.flags[2] & 0x02,\n defaultSampleDurationPresent = result.flags[2] & 0x08,\n defaultSampleSizePresent = result.flags[2] & 0x10,\n defaultSampleFlagsPresent = result.flags[2] & 0x20,\n durationIsEmpty = result.flags[0] & 0x010000,\n defaultBaseIsMoof = result.flags[0] & 0x020000,\n i;\n i = 8;\n\n if (baseDataOffsetPresent) {\n i += 4; // truncate top 4 bytes\n // FIXME: should we read the full 64 bits?\n\n result.baseDataOffset = view.getUint32(12);\n i += 4;\n }\n\n if (sampleDescriptionIndexPresent) {\n result.sampleDescriptionIndex = view.getUint32(i);\n i += 4;\n }\n\n if (defaultSampleDurationPresent) {\n result.defaultSampleDuration = view.getUint32(i);\n i += 4;\n }\n\n if (defaultSampleSizePresent) {\n result.defaultSampleSize = view.getUint32(i);\n i += 4;\n }\n\n if (defaultSampleFlagsPresent) {\n result.defaultSampleFlags = view.getUint32(i);\n }\n\n if (durationIsEmpty) {\n result.durationIsEmpty = true;\n }\n\n if (!baseDataOffsetPresent && defaultBaseIsMoof) {\n result.baseDataOffsetIsMoof = true;\n }\n\n return result;\n };\n\n var parseTfhd = tfhd;\n var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n var win;\n\n if (typeof window !== \"undefined\") {\n win = window;\n } else if (typeof commonjsGlobal !== \"undefined\") {\n win = commonjsGlobal;\n } else if (typeof self !== \"undefined\") {\n win = self;\n } else {\n win = {};\n }\n\n var window_1 = win;\n var discardEmulationPreventionBytes = captionPacketParser.discardEmulationPreventionBytes;\n var CaptionStream = captionStream.CaptionStream;\n /**\n * Maps an offset in the mdat to a sample based on the the size of the samples.\n * Assumes that `parseSamples` has been called first.\n *\n * @param {Number} offset - The offset into the mdat\n * @param {Object[]} samples - An array of samples, parsed using `parseSamples`\n * @return {?Object} The matching sample, or null if no match was found.\n *\n * @see ISO-BMFF-12/2015, Section 8.8.8\n **/\n\n var mapToSample = function mapToSample(offset, samples) {\n var approximateOffset = offset;\n\n for (var i = 0; i < samples.length; i++) {\n var sample = samples[i];\n\n if (approximateOffset < sample.size) {\n return sample;\n }\n\n approximateOffset -= sample.size;\n }\n\n return null;\n };\n /**\n * Finds SEI nal units contained in a Media Data Box.\n * Assumes that `parseSamples` has been called first.\n *\n * @param {Uint8Array} avcStream - The bytes of the mdat\n * @param {Object[]} samples - The samples parsed out by `parseSamples`\n * @param {Number} trackId - The trackId of this video track\n * @return {Object[]} seiNals - the parsed SEI NALUs found.\n * The contents of the seiNal should match what is expected by\n * CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)\n *\n * @see ISO-BMFF-12/2015, Section 8.1.1\n * @see Rec. ITU-T H.264, 7.3.2.3.1\n **/\n\n\n var findSeiNals = function findSeiNals(avcStream, samples, trackId) {\n var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n result = {\n logs: [],\n seiNals: []\n },\n seiNal,\n i,\n length,\n lastMatchedSample;\n\n for (i = 0; i + 4 < avcStream.length; i += length) {\n length = avcView.getUint32(i);\n i += 4; // Bail if this doesn't appear to be an H264 stream\n\n if (length <= 0) {\n continue;\n }\n\n switch (avcStream[i] & 0x1F) {\n case 0x06:\n var data = avcStream.subarray(i + 1, i + 1 + length);\n var matchingSample = mapToSample(i, samples);\n seiNal = {\n nalUnitType: 'sei_rbsp',\n size: length,\n data: data,\n escapedRBSP: discardEmulationPreventionBytes(data),\n trackId: trackId\n };\n\n if (matchingSample) {\n seiNal.pts = matchingSample.pts;\n seiNal.dts = matchingSample.dts;\n lastMatchedSample = matchingSample;\n } else if (lastMatchedSample) {\n // If a matching sample cannot be found, use the last\n // sample's values as they should be as close as possible\n seiNal.pts = lastMatchedSample.pts;\n seiNal.dts = lastMatchedSample.dts;\n } else {\n result.logs.push({\n level: 'warn',\n message: 'We\\'ve encountered a nal unit without data at ' + i + ' for trackId ' + trackId + '. See mux.js#223.'\n });\n break;\n }\n\n result.seiNals.push(seiNal);\n break;\n }\n }\n\n return result;\n };\n /**\n * Parses sample information out of Track Run Boxes and calculates\n * the absolute presentation and decode timestamps of each sample.\n *\n * @param {Array} truns - The Trun Run boxes to be parsed\n * @param {Number|BigInt} baseMediaDecodeTime - base media decode time from tfdt\n @see ISO-BMFF-12/2015, Section 8.8.12\n * @param {Object} tfhd - The parsed Track Fragment Header\n * @see inspect.parseTfhd\n * @return {Object[]} the parsed samples\n *\n * @see ISO-BMFF-12/2015, Section 8.8.8\n **/\n\n\n var parseSamples = function parseSamples(truns, baseMediaDecodeTime, tfhd) {\n var currentDts = baseMediaDecodeTime;\n var defaultSampleDuration = tfhd.defaultSampleDuration || 0;\n var defaultSampleSize = tfhd.defaultSampleSize || 0;\n var trackId = tfhd.trackId;\n var allSamples = [];\n truns.forEach(function (trun) {\n // Note: We currently do not parse the sample table as well\n // as the trun. It's possible some sources will require this.\n // moov > trak > mdia > minf > stbl\n var trackRun = parseTrun(trun);\n var samples = trackRun.samples;\n samples.forEach(function (sample) {\n if (sample.duration === undefined) {\n sample.duration = defaultSampleDuration;\n }\n\n if (sample.size === undefined) {\n sample.size = defaultSampleSize;\n }\n\n sample.trackId = trackId;\n sample.dts = currentDts;\n\n if (sample.compositionTimeOffset === undefined) {\n sample.compositionTimeOffset = 0;\n }\n\n if (typeof currentDts === 'bigint') {\n sample.pts = currentDts + window_1.BigInt(sample.compositionTimeOffset);\n currentDts += window_1.BigInt(sample.duration);\n } else {\n sample.pts = currentDts + sample.compositionTimeOffset;\n currentDts += sample.duration;\n }\n });\n allSamples = allSamples.concat(samples);\n });\n return allSamples;\n };\n /**\n * Parses out caption nals from an FMP4 segment's video tracks.\n *\n * @param {Uint8Array} segment - The bytes of a single segment\n * @param {Number} videoTrackId - The trackId of a video track in the segment\n * @return {Object.} A mapping of video trackId to\n * a list of seiNals found in that track\n **/\n\n\n var parseCaptionNals = function parseCaptionNals(segment, videoTrackId) {\n // To get the samples\n var trafs = findBox_1(segment, ['moof', 'traf']); // To get SEI NAL units\n\n var mdats = findBox_1(segment, ['mdat']);\n var captionNals = {};\n var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs\n\n mdats.forEach(function (mdat, index) {\n var matchingTraf = trafs[index];\n mdatTrafPairs.push({\n mdat: mdat,\n traf: matchingTraf\n });\n });\n mdatTrafPairs.forEach(function (pair) {\n var mdat = pair.mdat;\n var traf = pair.traf;\n var tfhd = findBox_1(traf, ['tfhd']); // Exactly 1 tfhd per traf\n\n var headerInfo = parseTfhd(tfhd[0]);\n var trackId = headerInfo.trackId;\n var tfdt = findBox_1(traf, ['tfdt']); // Either 0 or 1 tfdt per traf\n\n var baseMediaDecodeTime = tfdt.length > 0 ? parseTfdt(tfdt[0]).baseMediaDecodeTime : 0;\n var truns = findBox_1(traf, ['trun']);\n var samples;\n var result; // Only parse video data for the chosen video track\n\n if (videoTrackId === trackId && truns.length > 0) {\n samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);\n result = findSeiNals(mdat, samples, trackId);\n\n if (!captionNals[trackId]) {\n captionNals[trackId] = {\n seiNals: [],\n logs: []\n };\n }\n\n captionNals[trackId].seiNals = captionNals[trackId].seiNals.concat(result.seiNals);\n captionNals[trackId].logs = captionNals[trackId].logs.concat(result.logs);\n }\n });\n return captionNals;\n };\n /**\n * Parses out inband captions from an MP4 container and returns\n * caption objects that can be used by WebVTT and the TextTrack API.\n * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue\n * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack\n * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first\n *\n * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n * @param {Number} trackId - The id of the video track to parse\n * @param {Number} timescale - The timescale for the video track from the init segment\n *\n * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks\n * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds\n * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds\n * @return {String} parsedCaptions[].text - The visible content of the caption\n **/\n\n\n var parseEmbeddedCaptions = function parseEmbeddedCaptions(segment, trackId, timescale) {\n var captionNals; // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n\n if (trackId === null) {\n return null;\n }\n\n captionNals = parseCaptionNals(segment, trackId);\n var trackNals = captionNals[trackId] || {};\n return {\n seiNals: trackNals.seiNals,\n logs: trackNals.logs,\n timescale: timescale\n };\n };\n /**\n * Converts SEI NALUs into captions that can be used by video.js\n **/\n\n\n var CaptionParser = function CaptionParser() {\n var isInitialized = false;\n var captionStream; // Stores segments seen before trackId and timescale are set\n\n var segmentCache; // Stores video track ID of the track being parsed\n\n var trackId; // Stores the timescale of the track being parsed\n\n var timescale; // Stores captions parsed so far\n\n var parsedCaptions; // Stores whether we are receiving partial data or not\n\n var parsingPartial;\n /**\n * A method to indicate whether a CaptionParser has been initalized\n * @returns {Boolean}\n **/\n\n this.isInitialized = function () {\n return isInitialized;\n };\n /**\n * Initializes the underlying CaptionStream, SEI NAL parsing\n * and management, and caption collection\n **/\n\n\n this.init = function (options) {\n captionStream = new CaptionStream();\n isInitialized = true;\n parsingPartial = options ? options.isPartial : false; // Collect dispatched captions\n\n captionStream.on('data', function (event) {\n // Convert to seconds in the source's timescale\n event.startTime = event.startPts / timescale;\n event.endTime = event.endPts / timescale;\n parsedCaptions.captions.push(event);\n parsedCaptions.captionStreams[event.stream] = true;\n });\n captionStream.on('log', function (log) {\n parsedCaptions.logs.push(log);\n });\n };\n /**\n * Determines if a new video track will be selected\n * or if the timescale changed\n * @return {Boolean}\n **/\n\n\n this.isNewInit = function (videoTrackIds, timescales) {\n if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {\n return false;\n }\n\n return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];\n };\n /**\n * Parses out SEI captions and interacts with underlying\n * CaptionStream to return dispatched captions\n *\n * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment\n * @param {Object.} timescales - The timescales found in the init segment\n * @see parseEmbeddedCaptions\n * @see m2ts/caption-stream.js\n **/\n\n\n this.parse = function (segment, videoTrackIds, timescales) {\n var parsedData;\n\n if (!this.isInitialized()) {\n return null; // This is not likely to be a video segment\n } else if (!videoTrackIds || !timescales) {\n return null;\n } else if (this.isNewInit(videoTrackIds, timescales)) {\n // Use the first video track only as there is no\n // mechanism to switch to other video tracks\n trackId = videoTrackIds[0];\n timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment\n // data until we have one.\n // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n } else if (trackId === null || !timescale) {\n segmentCache.push(segment);\n return null;\n } // Now that a timescale and trackId is set, parse cached segments\n\n\n while (segmentCache.length > 0) {\n var cachedSegment = segmentCache.shift();\n this.parse(cachedSegment, videoTrackIds, timescales);\n }\n\n parsedData = parseEmbeddedCaptions(segment, trackId, timescale);\n\n if (parsedData && parsedData.logs) {\n parsedCaptions.logs = parsedCaptions.logs.concat(parsedData.logs);\n }\n\n if (parsedData === null || !parsedData.seiNals) {\n if (parsedCaptions.logs.length) {\n return {\n logs: parsedCaptions.logs,\n captions: [],\n captionStreams: []\n };\n }\n\n return null;\n }\n\n this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched\n\n this.flushStream();\n return parsedCaptions;\n };\n /**\n * Pushes SEI NALUs onto CaptionStream\n * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`\n * Assumes that `parseCaptionNals` has been called first\n * @see m2ts/caption-stream.js\n **/\n\n\n this.pushNals = function (nals) {\n if (!this.isInitialized() || !nals || nals.length === 0) {\n return null;\n }\n\n nals.forEach(function (nal) {\n captionStream.push(nal);\n });\n };\n /**\n * Flushes underlying CaptionStream to dispatch processed, displayable captions\n * @see m2ts/caption-stream.js\n **/\n\n\n this.flushStream = function () {\n if (!this.isInitialized()) {\n return null;\n }\n\n if (!parsingPartial) {\n captionStream.flush();\n } else {\n captionStream.partialFlush();\n }\n };\n /**\n * Reset caption buckets for new data\n **/\n\n\n this.clearParsedCaptions = function () {\n parsedCaptions.captions = [];\n parsedCaptions.captionStreams = {};\n parsedCaptions.logs = [];\n };\n /**\n * Resets underlying CaptionStream\n * @see m2ts/caption-stream.js\n **/\n\n\n this.resetCaptionStream = function () {\n if (!this.isInitialized()) {\n return null;\n }\n\n captionStream.reset();\n };\n /**\n * Convenience method to clear all captions flushed from the\n * CaptionStream and still being parsed\n * @see m2ts/caption-stream.js\n **/\n\n\n this.clearAllCaptions = function () {\n this.clearParsedCaptions();\n this.resetCaptionStream();\n };\n /**\n * Reset caption parser\n **/\n\n\n this.reset = function () {\n segmentCache = [];\n trackId = null;\n timescale = null;\n\n if (!parsedCaptions) {\n parsedCaptions = {\n captions: [],\n // CC1, CC2, CC3, CC4\n captionStreams: {},\n logs: []\n };\n } else {\n this.clearParsedCaptions();\n }\n\n this.resetCaptionStream();\n };\n\n this.reset();\n };\n\n var captionParser = CaptionParser;\n var toUnsigned = bin.toUnsigned;\n var toHexString = bin.toHexString;\n var getUint64 = numbers.getUint64;\n var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader;\n /**\n * Parses an MP4 initialization segment and extracts the timescale\n * values for any declared tracks. Timescale values indicate the\n * number of clock ticks per second to assume for time-based values\n * elsewhere in the MP4.\n *\n * To determine the start time of an MP4, you need two pieces of\n * information: the timescale unit and the earliest base media decode\n * time. Multiple timescales can be specified within an MP4 but the\n * base media decode time is always expressed in the timescale from\n * the media header box for the track:\n * ```\n * moov > trak > mdia > mdhd.timescale\n * ```\n * @param init {Uint8Array} the bytes of the init segment\n * @return {object} a hash of track ids to timescale values or null if\n * the init segment is malformed.\n */\n\n timescale = function timescale(init) {\n var result = {},\n traks = findBox_1(init, ['moov', 'trak']); // mdhd timescale\n\n return traks.reduce(function (result, trak) {\n var tkhd, version, index, id, mdhd;\n tkhd = findBox_1(trak, ['tkhd'])[0];\n\n if (!tkhd) {\n return null;\n }\n\n version = tkhd[0];\n index = version === 0 ? 12 : 20;\n id = toUnsigned(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);\n mdhd = findBox_1(trak, ['mdia', 'mdhd'])[0];\n\n if (!mdhd) {\n return null;\n }\n\n version = mdhd[0];\n index = version === 0 ? 12 : 20;\n result[id] = toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n return result;\n }, result);\n };\n /**\n * Determine the base media decode start time, in seconds, for an MP4\n * fragment. If multiple fragments are specified, the earliest time is\n * returned.\n *\n * The base media decode time can be parsed from track fragment\n * metadata:\n * ```\n * moof > traf > tfdt.baseMediaDecodeTime\n * ```\n * It requires the timescale value from the mdhd to interpret.\n *\n * @param timescale {object} a hash of track ids to timescale values.\n * @return {number} the earliest base media decode start time for the\n * fragment, in seconds\n */\n\n\n startTime = function startTime(timescale, fragment) {\n var trafs; // we need info from two childrend of each track fragment box\n\n trafs = findBox_1(fragment, ['moof', 'traf']); // determine the start times for each track\n\n var lowestTime = trafs.reduce(function (acc, traf) {\n var tfhd = findBox_1(traf, ['tfhd'])[0]; // get the track id from the tfhd\n\n var id = toUnsigned(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified\n\n var scale = timescale[id] || 90e3; // get the base media decode time from the tfdt\n\n var tfdt = findBox_1(traf, ['tfdt'])[0];\n var dv = new DataView(tfdt.buffer, tfdt.byteOffset, tfdt.byteLength);\n var baseTime; // version 1 is 64 bit\n\n if (tfdt[0] === 1) {\n baseTime = getUint64(tfdt.subarray(4, 12));\n } else {\n baseTime = dv.getUint32(4);\n } // convert base time to seconds if it is a valid number.\n\n\n var seconds;\n\n if (typeof baseTime === 'bigint') {\n seconds = baseTime / window_1.BigInt(scale);\n } else if (typeof baseTime === 'number' && !isNaN(baseTime)) {\n seconds = baseTime / scale;\n }\n\n if (seconds < Number.MAX_SAFE_INTEGER) {\n seconds = Number(seconds);\n }\n\n if (seconds < acc) {\n acc = seconds;\n }\n\n return acc;\n }, Infinity);\n return typeof lowestTime === 'bigint' || isFinite(lowestTime) ? lowestTime : 0;\n };\n /**\n * Determine the composition start, in seconds, for an MP4\n * fragment.\n *\n * The composition start time of a fragment can be calculated using the base\n * media decode time, composition time offset, and timescale, as follows:\n *\n * compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale\n *\n * All of the aforementioned information is contained within a media fragment's\n * `traf` box, except for timescale info, which comes from the initialization\n * segment, so a track id (also contained within a `traf`) is also necessary to\n * associate it with a timescale\n *\n *\n * @param timescales {object} - a hash of track ids to timescale values.\n * @param fragment {Unit8Array} - the bytes of a media segment\n * @return {number} the composition start time for the fragment, in seconds\n **/\n\n\n compositionStartTime = function compositionStartTime(timescales, fragment) {\n var trafBoxes = findBox_1(fragment, ['moof', 'traf']);\n var baseMediaDecodeTime = 0;\n var compositionTimeOffset = 0;\n var trackId;\n\n if (trafBoxes && trafBoxes.length) {\n // The spec states that track run samples contained within a `traf` box are contiguous, but\n // it does not explicitly state whether the `traf` boxes themselves are contiguous.\n // We will assume that they are, so we only need the first to calculate start time.\n var tfhd = findBox_1(trafBoxes[0], ['tfhd'])[0];\n var trun = findBox_1(trafBoxes[0], ['trun'])[0];\n var tfdt = findBox_1(trafBoxes[0], ['tfdt'])[0];\n\n if (tfhd) {\n var parsedTfhd = parseTfhd(tfhd);\n trackId = parsedTfhd.trackId;\n }\n\n if (tfdt) {\n var parsedTfdt = parseTfdt(tfdt);\n baseMediaDecodeTime = parsedTfdt.baseMediaDecodeTime;\n }\n\n if (trun) {\n var parsedTrun = parseTrun(trun);\n\n if (parsedTrun.samples && parsedTrun.samples.length) {\n compositionTimeOffset = parsedTrun.samples[0].compositionTimeOffset || 0;\n }\n }\n } // Get timescale for this specific track. Assume a 90kHz clock if no timescale was\n // specified.\n\n\n var timescale = timescales[trackId] || 90e3; // return the composition start time, in seconds\n\n if (typeof baseMediaDecodeTime === 'bigint') {\n compositionTimeOffset = window_1.BigInt(compositionTimeOffset);\n timescale = window_1.BigInt(timescale);\n }\n\n var result = (baseMediaDecodeTime + compositionTimeOffset) / timescale;\n\n if (typeof result === 'bigint' && result < Number.MAX_SAFE_INTEGER) {\n result = Number(result);\n }\n\n return result;\n };\n /**\n * Find the trackIds of the video tracks in this source.\n * Found by parsing the Handler Reference and Track Header Boxes:\n * moov > trak > mdia > hdlr\n * moov > trak > tkhd\n *\n * @param {Uint8Array} init - The bytes of the init segment for this source\n * @return {Number[]} A list of trackIds\n *\n * @see ISO-BMFF-12/2015, Section 8.4.3\n **/\n\n\n getVideoTrackIds = function getVideoTrackIds(init) {\n var traks = findBox_1(init, ['moov', 'trak']);\n var videoTrackIds = [];\n traks.forEach(function (trak) {\n var hdlrs = findBox_1(trak, ['mdia', 'hdlr']);\n var tkhds = findBox_1(trak, ['tkhd']);\n hdlrs.forEach(function (hdlr, index) {\n var handlerType = parseType_1(hdlr.subarray(8, 12));\n var tkhd = tkhds[index];\n var view;\n var version;\n var trackId;\n\n if (handlerType === 'vide') {\n view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n version = view.getUint8(0);\n trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);\n videoTrackIds.push(trackId);\n }\n });\n });\n return videoTrackIds;\n };\n\n getTimescaleFromMediaHeader = function getTimescaleFromMediaHeader(mdhd) {\n // mdhd is a FullBox, meaning it will have its own version as the first byte\n var version = mdhd[0];\n var index = version === 0 ? 12 : 20;\n return toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n };\n /**\n * Get all the video, audio, and hint tracks from a non fragmented\n * mp4 segment\n */\n\n\n getTracks = function getTracks(init) {\n var traks = findBox_1(init, ['moov', 'trak']);\n var tracks = [];\n traks.forEach(function (trak) {\n var track = {};\n var tkhd = findBox_1(trak, ['tkhd'])[0];\n var view, tkhdVersion; // id\n\n if (tkhd) {\n view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n tkhdVersion = view.getUint8(0);\n track.id = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);\n }\n\n var hdlr = findBox_1(trak, ['mdia', 'hdlr'])[0]; // type\n\n if (hdlr) {\n var type = parseType_1(hdlr.subarray(8, 12));\n\n if (type === 'vide') {\n track.type = 'video';\n } else if (type === 'soun') {\n track.type = 'audio';\n } else {\n track.type = type;\n }\n } // codec\n\n\n var stsd = findBox_1(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];\n\n if (stsd) {\n var sampleDescriptions = stsd.subarray(8); // gives the codec type string\n\n track.codec = parseType_1(sampleDescriptions.subarray(4, 8));\n var codecBox = findBox_1(sampleDescriptions, [track.codec])[0];\n var codecConfig, codecConfigType;\n\n if (codecBox) {\n // https://tools.ietf.org/html/rfc6381#section-3.3\n if (/^[asm]vc[1-9]$/i.test(track.codec)) {\n // we don't need anything but the \"config\" parameter of the\n // avc1 codecBox\n codecConfig = codecBox.subarray(78);\n codecConfigType = parseType_1(codecConfig.subarray(4, 8));\n\n if (codecConfigType === 'avcC' && codecConfig.length > 11) {\n track.codec += '.'; // left padded with zeroes for single digit hex\n // profile idc\n\n track.codec += toHexString(codecConfig[9]); // the byte containing the constraint_set flags\n\n track.codec += toHexString(codecConfig[10]); // level idc\n\n track.codec += toHexString(codecConfig[11]);\n } else {\n // TODO: show a warning that we couldn't parse the codec\n // and are using the default\n track.codec = 'avc1.4d400d';\n }\n } else if (/^mp4[a,v]$/i.test(track.codec)) {\n // we do not need anything but the streamDescriptor of the mp4a codecBox\n codecConfig = codecBox.subarray(28);\n codecConfigType = parseType_1(codecConfig.subarray(4, 8));\n\n if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {\n track.codec += '.' + toHexString(codecConfig[19]); // this value is only a single digit\n\n track.codec += '.' + toHexString(codecConfig[20] >>> 2 & 0x3f).replace(/^0/, '');\n } else {\n // TODO: show a warning that we couldn't parse the codec\n // and are using the default\n track.codec = 'mp4a.40.2';\n }\n } else {\n // flac, opus, etc\n track.codec = track.codec.toLowerCase();\n }\n }\n }\n\n var mdhd = findBox_1(trak, ['mdia', 'mdhd'])[0];\n\n if (mdhd) {\n track.timescale = getTimescaleFromMediaHeader(mdhd);\n }\n\n tracks.push(track);\n });\n return tracks;\n };\n\n var probe$2 = {\n // export mp4 inspector's findBox and parseType for backwards compatibility\n findBox: findBox_1,\n parseType: parseType_1,\n timescale: timescale,\n startTime: startTime,\n compositionStartTime: compositionStartTime,\n videoTrackIds: getVideoTrackIds,\n tracks: getTracks,\n getTimescaleFromMediaHeader: getTimescaleFromMediaHeader\n };\n\n var parsePid = function parsePid(packet) {\n var pid = packet[1] & 0x1f;\n pid <<= 8;\n pid |= packet[2];\n return pid;\n };\n\n var parsePayloadUnitStartIndicator = function parsePayloadUnitStartIndicator(packet) {\n return !!(packet[1] & 0x40);\n };\n\n var parseAdaptionField = function parseAdaptionField(packet) {\n var offset = 0; // if an adaption field is present, its length is specified by the\n // fifth byte of the TS packet header. The adaptation field is\n // used to add stuffing to PES packets that don't fill a complete\n // TS packet, and to specify some forms of timing and control data\n // that we do not currently use.\n\n if ((packet[3] & 0x30) >>> 4 > 0x01) {\n offset += packet[4] + 1;\n }\n\n return offset;\n };\n\n var parseType = function parseType(packet, pmtPid) {\n var pid = parsePid(packet);\n\n if (pid === 0) {\n return 'pat';\n } else if (pid === pmtPid) {\n return 'pmt';\n } else if (pmtPid) {\n return 'pes';\n }\n\n return null;\n };\n\n var parsePat = function parsePat(packet) {\n var pusi = parsePayloadUnitStartIndicator(packet);\n var offset = 4 + parseAdaptionField(packet);\n\n if (pusi) {\n offset += packet[offset] + 1;\n }\n\n return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];\n };\n\n var parsePmt = function parsePmt(packet) {\n var programMapTable = {};\n var pusi = parsePayloadUnitStartIndicator(packet);\n var payloadOffset = 4 + parseAdaptionField(packet);\n\n if (pusi) {\n payloadOffset += packet[payloadOffset] + 1;\n } // PMTs can be sent ahead of the time when they should actually\n // take effect. We don't believe this should ever be the case\n // for HLS but we'll ignore \"forward\" PMT declarations if we see\n // them. Future PMT declarations have the current_next_indicator\n // set to zero.\n\n\n if (!(packet[payloadOffset + 5] & 0x01)) {\n return;\n }\n\n var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section\n\n sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];\n tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n // long the program info descriptors are\n\n programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table\n\n var offset = 12 + programInfoLength;\n\n while (offset < tableEnd) {\n var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type\n\n programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry\n // skip past the elementary stream descriptors, if present\n\n offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;\n }\n\n return programMapTable;\n };\n\n var parsePesType = function parsePesType(packet, programMapTable) {\n var pid = parsePid(packet);\n var type = programMapTable[pid];\n\n switch (type) {\n case streamTypes.H264_STREAM_TYPE:\n return 'video';\n\n case streamTypes.ADTS_STREAM_TYPE:\n return 'audio';\n\n case streamTypes.METADATA_STREAM_TYPE:\n return 'timed-metadata';\n\n default:\n return null;\n }\n };\n\n var parsePesTime = function parsePesTime(packet) {\n var pusi = parsePayloadUnitStartIndicator(packet);\n\n if (!pusi) {\n return null;\n }\n\n var offset = 4 + parseAdaptionField(packet);\n\n if (offset >= packet.byteLength) {\n // From the H 222.0 MPEG-TS spec\n // \"For transport stream packets carrying PES packets, stuffing is needed when there\n // is insufficient PES packet data to completely fill the transport stream packet\n // payload bytes. Stuffing is accomplished by defining an adaptation field longer than\n // the sum of the lengths of the data elements in it, so that the payload bytes\n // remaining after the adaptation field exactly accommodates the available PES packet\n // data.\"\n //\n // If the offset is >= the length of the packet, then the packet contains no data\n // and instead is just adaption field stuffing bytes\n return null;\n }\n\n var pes = null;\n var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value\n // and a DTS value. Determine what combination of values is\n // available to work with.\n\n ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number. Javascript\n // performs all bitwise operations on 32-bit integers but javascript\n // supports a much greater range (52-bits) of integer using standard\n // mathematical operations.\n // We construct a 31-bit value using bitwise operators over the 31\n // most significant bits and then multiply by 4 (equal to a left-shift\n // of 2) before we add the final 2 least significant bits of the\n // timestamp (equal to an OR.)\n\n if (ptsDtsFlags & 0xC0) {\n pes = {}; // the PTS and DTS are not written out directly. For information\n // on how they are encoded, see\n // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n\n pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;\n pes.pts *= 4; // Left shift by 2\n\n pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs\n\n pes.dts = pes.pts;\n\n if (ptsDtsFlags & 0x40) {\n pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;\n pes.dts *= 4; // Left shift by 2\n\n pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs\n }\n }\n\n return pes;\n };\n\n var parseNalUnitType = function parseNalUnitType(type) {\n switch (type) {\n case 0x05:\n return 'slice_layer_without_partitioning_rbsp_idr';\n\n case 0x06:\n return 'sei_rbsp';\n\n case 0x07:\n return 'seq_parameter_set_rbsp';\n\n case 0x08:\n return 'pic_parameter_set_rbsp';\n\n case 0x09:\n return 'access_unit_delimiter_rbsp';\n\n default:\n return null;\n }\n };\n\n var videoPacketContainsKeyFrame = function videoPacketContainsKeyFrame(packet) {\n var offset = 4 + parseAdaptionField(packet);\n var frameBuffer = packet.subarray(offset);\n var frameI = 0;\n var frameSyncPoint = 0;\n var foundKeyFrame = false;\n var nalType; // advance the sync point to a NAL start, if necessary\n\n for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {\n if (frameBuffer[frameSyncPoint + 2] === 1) {\n // the sync point is properly aligned\n frameI = frameSyncPoint + 5;\n break;\n }\n }\n\n while (frameI < frameBuffer.byteLength) {\n // look at the current byte to determine if we've hit the end of\n // a NAL unit boundary\n switch (frameBuffer[frameI]) {\n case 0:\n // skip past non-sync sequences\n if (frameBuffer[frameI - 1] !== 0) {\n frameI += 2;\n break;\n } else if (frameBuffer[frameI - 2] !== 0) {\n frameI++;\n break;\n }\n\n if (frameSyncPoint + 3 !== frameI - 2) {\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n } // drop trailing zeroes\n\n\n do {\n frameI++;\n } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);\n\n frameSyncPoint = frameI - 2;\n frameI += 3;\n break;\n\n case 1:\n // skip past non-sync sequences\n if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {\n frameI += 3;\n break;\n }\n\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n\n frameSyncPoint = frameI - 2;\n frameI += 3;\n break;\n\n default:\n // the current byte isn't a one or zero, so it cannot be part\n // of a sync sequence\n frameI += 3;\n break;\n }\n }\n\n frameBuffer = frameBuffer.subarray(frameSyncPoint);\n frameI -= frameSyncPoint;\n frameSyncPoint = 0; // parse the final nal\n\n if (frameBuffer && frameBuffer.byteLength > 3) {\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n }\n\n return foundKeyFrame;\n };\n\n var probe$1 = {\n parseType: parseType,\n parsePat: parsePat,\n parsePmt: parsePmt,\n parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,\n parsePesType: parsePesType,\n parsePesTime: parsePesTime,\n videoPacketContainsKeyFrame: videoPacketContainsKeyFrame\n };\n var handleRollover = timestampRolloverStream.handleRollover;\n var probe = {};\n probe.ts = probe$1;\n probe.aac = utils;\n var ONE_SECOND_IN_TS = clock.ONE_SECOND_IN_TS;\n var MP2T_PACKET_LENGTH = 188,\n // bytes\n SYNC_BYTE = 0x47;\n /**\n * walks through segment data looking for pat and pmt packets to parse out\n * program map table information\n */\n\n var parsePsi_ = function parsePsi_(bytes, pmt) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type;\n\n while (endIndex < bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pat':\n pmt.pid = probe.ts.parsePat(packet);\n break;\n\n case 'pmt':\n var table = probe.ts.parsePmt(packet);\n pmt.table = pmt.table || {};\n Object.keys(table).forEach(function (key) {\n pmt.table[key] = table[key];\n });\n break;\n }\n\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n\n startIndex++;\n endIndex++;\n }\n };\n /**\n * walks through the segment data from the start and end to get timing information\n * for the first and last audio pes packets\n */\n\n\n var parseAudioPes_ = function parseAudioPes_(bytes, pmt, result) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type,\n pesType,\n pusi,\n parsed;\n var endLoop = false; // Start walking from start of segment to get first audio packet\n\n while (endIndex <= bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n\n if (pesType === 'audio' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n\n if (parsed) {\n parsed.type = 'audio';\n result.audio.push(parsed);\n endLoop = true;\n }\n }\n\n break;\n }\n\n if (endLoop) {\n break;\n }\n\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n\n startIndex++;\n endIndex++;\n } // Start walking from end of segment to get last audio packet\n\n\n endIndex = bytes.byteLength;\n startIndex = endIndex - MP2T_PACKET_LENGTH;\n endLoop = false;\n\n while (startIndex >= 0) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n\n if (pesType === 'audio' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n\n if (parsed) {\n parsed.type = 'audio';\n result.audio.push(parsed);\n endLoop = true;\n }\n }\n\n break;\n }\n\n if (endLoop) {\n break;\n }\n\n startIndex -= MP2T_PACKET_LENGTH;\n endIndex -= MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n\n startIndex--;\n endIndex--;\n }\n };\n /**\n * walks through the segment data from the start and end to get timing information\n * for the first and last video pes packets as well as timing information for the first\n * key frame.\n */\n\n\n var parseVideoPes_ = function parseVideoPes_(bytes, pmt, result) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type,\n pesType,\n pusi,\n parsed,\n frame,\n i,\n pes;\n var endLoop = false;\n var currentFrame = {\n data: [],\n size: 0\n }; // Start walking from start of segment to get first video packet\n\n while (endIndex < bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n\n if (pesType === 'video') {\n if (pusi && !endLoop) {\n parsed = probe.ts.parsePesTime(packet);\n\n if (parsed) {\n parsed.type = 'video';\n result.video.push(parsed);\n endLoop = true;\n }\n }\n\n if (!result.firstKeyFrame) {\n if (pusi) {\n if (currentFrame.size !== 0) {\n frame = new Uint8Array(currentFrame.size);\n i = 0;\n\n while (currentFrame.data.length) {\n pes = currentFrame.data.shift();\n frame.set(pes, i);\n i += pes.byteLength;\n }\n\n if (probe.ts.videoPacketContainsKeyFrame(frame)) {\n var firstKeyFrame = probe.ts.parsePesTime(frame); // PTS/DTS may not be available. Simply *not* setting\n // the keyframe seems to work fine with HLS playback\n // and definitely preferable to a crash with TypeError...\n\n if (firstKeyFrame) {\n result.firstKeyFrame = firstKeyFrame;\n result.firstKeyFrame.type = 'video';\n } else {\n // eslint-disable-next-line\n console.warn('Failed to extract PTS/DTS from PES at first keyframe. ' + 'This could be an unusual TS segment, or else mux.js did not ' + 'parse your TS segment correctly. If you know your TS ' + 'segments do contain PTS/DTS on keyframes please file a bug ' + 'report! You can try ffprobe to double check for yourself.');\n }\n }\n\n currentFrame.size = 0;\n }\n }\n\n currentFrame.data.push(packet);\n currentFrame.size += packet.byteLength;\n }\n }\n\n break;\n }\n\n if (endLoop && result.firstKeyFrame) {\n break;\n }\n\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n\n startIndex++;\n endIndex++;\n } // Start walking from end of segment to get last video packet\n\n\n endIndex = bytes.byteLength;\n startIndex = endIndex - MP2T_PACKET_LENGTH;\n endLoop = false;\n\n while (startIndex >= 0) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n\n if (pesType === 'video' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n\n if (parsed) {\n parsed.type = 'video';\n result.video.push(parsed);\n endLoop = true;\n }\n }\n\n break;\n }\n\n if (endLoop) {\n break;\n }\n\n startIndex -= MP2T_PACKET_LENGTH;\n endIndex -= MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n\n startIndex--;\n endIndex--;\n }\n };\n /**\n * Adjusts the timestamp information for the segment to account for\n * rollover and convert to seconds based on pes packet timescale (90khz clock)\n */\n\n\n var adjustTimestamp_ = function adjustTimestamp_(segmentInfo, baseTimestamp) {\n if (segmentInfo.audio && segmentInfo.audio.length) {\n var audioBaseTimestamp = baseTimestamp;\n\n if (typeof audioBaseTimestamp === 'undefined' || isNaN(audioBaseTimestamp)) {\n audioBaseTimestamp = segmentInfo.audio[0].dts;\n }\n\n segmentInfo.audio.forEach(function (info) {\n info.dts = handleRollover(info.dts, audioBaseTimestamp);\n info.pts = handleRollover(info.pts, audioBaseTimestamp); // time in seconds\n\n info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n });\n }\n\n if (segmentInfo.video && segmentInfo.video.length) {\n var videoBaseTimestamp = baseTimestamp;\n\n if (typeof videoBaseTimestamp === 'undefined' || isNaN(videoBaseTimestamp)) {\n videoBaseTimestamp = segmentInfo.video[0].dts;\n }\n\n segmentInfo.video.forEach(function (info) {\n info.dts = handleRollover(info.dts, videoBaseTimestamp);\n info.pts = handleRollover(info.pts, videoBaseTimestamp); // time in seconds\n\n info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n });\n\n if (segmentInfo.firstKeyFrame) {\n var frame = segmentInfo.firstKeyFrame;\n frame.dts = handleRollover(frame.dts, videoBaseTimestamp);\n frame.pts = handleRollover(frame.pts, videoBaseTimestamp); // time in seconds\n\n frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;\n frame.ptsTime = frame.pts / ONE_SECOND_IN_TS;\n }\n }\n };\n /**\n * inspects the aac data stream for start and end time information\n */\n\n\n var inspectAac_ = function inspectAac_(bytes) {\n var endLoop = false,\n audioCount = 0,\n sampleRate = null,\n timestamp = null,\n frameSize = 0,\n byteIndex = 0,\n packet;\n\n while (bytes.length - byteIndex >= 3) {\n var type = probe.aac.parseType(bytes, byteIndex);\n\n switch (type) {\n case 'timed-metadata':\n // Exit early because we don't have enough to parse\n // the ID3 tag header\n if (bytes.length - byteIndex < 10) {\n endLoop = true;\n break;\n }\n\n frameSize = probe.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (frameSize > bytes.length) {\n endLoop = true;\n break;\n }\n\n if (timestamp === null) {\n packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n timestamp = probe.aac.parseAacTimestamp(packet);\n }\n\n byteIndex += frameSize;\n break;\n\n case 'audio':\n // Exit early because we don't have enough to parse\n // the ADTS frame header\n if (bytes.length - byteIndex < 7) {\n endLoop = true;\n break;\n }\n\n frameSize = probe.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (frameSize > bytes.length) {\n endLoop = true;\n break;\n }\n\n if (sampleRate === null) {\n packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n sampleRate = probe.aac.parseSampleRate(packet);\n }\n\n audioCount++;\n byteIndex += frameSize;\n break;\n\n default:\n byteIndex++;\n break;\n }\n\n if (endLoop) {\n return null;\n }\n }\n\n if (sampleRate === null || timestamp === null) {\n return null;\n }\n\n var audioTimescale = ONE_SECOND_IN_TS / sampleRate;\n var result = {\n audio: [{\n type: 'audio',\n dts: timestamp,\n pts: timestamp\n }, {\n type: 'audio',\n dts: timestamp + audioCount * 1024 * audioTimescale,\n pts: timestamp + audioCount * 1024 * audioTimescale\n }]\n };\n return result;\n };\n /**\n * inspects the transport stream segment data for start and end time information\n * of the audio and video tracks (when present) as well as the first key frame's\n * start time.\n */\n\n\n var inspectTs_ = function inspectTs_(bytes) {\n var pmt = {\n pid: null,\n table: null\n };\n var result = {};\n parsePsi_(bytes, pmt);\n\n for (var pid in pmt.table) {\n if (pmt.table.hasOwnProperty(pid)) {\n var type = pmt.table[pid];\n\n switch (type) {\n case streamTypes.H264_STREAM_TYPE:\n result.video = [];\n parseVideoPes_(bytes, pmt, result);\n\n if (result.video.length === 0) {\n delete result.video;\n }\n\n break;\n\n case streamTypes.ADTS_STREAM_TYPE:\n result.audio = [];\n parseAudioPes_(bytes, pmt, result);\n\n if (result.audio.length === 0) {\n delete result.audio;\n }\n\n break;\n }\n }\n }\n\n return result;\n };\n /**\n * Inspects segment byte data and returns an object with start and end timing information\n *\n * @param {Uint8Array} bytes The segment byte data\n * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame\n * timestamps for rollover. This value must be in 90khz clock.\n * @return {Object} Object containing start and end frame timing info of segment.\n */\n\n\n var inspect = function inspect(bytes, baseTimestamp) {\n var isAacData = probe.aac.isLikelyAacData(bytes);\n var result;\n\n if (isAacData) {\n result = inspectAac_(bytes);\n } else {\n result = inspectTs_(bytes);\n }\n\n if (!result || !result.audio && !result.video) {\n return null;\n }\n\n adjustTimestamp_(result, baseTimestamp);\n return result;\n };\n\n var tsInspector = {\n inspect: inspect,\n parseAudioPes_: parseAudioPes_\n };\n /* global self */\n\n /**\n * Re-emits transmuxer events by converting them into messages to the\n * world outside the worker.\n *\n * @param {Object} transmuxer the transmuxer to wire events on\n * @private\n */\n\n var wireTransmuxerEvents = function wireTransmuxerEvents(self, transmuxer) {\n transmuxer.on('data', function (segment) {\n // transfer ownership of the underlying ArrayBuffer\n // instead of doing a copy to save memory\n // ArrayBuffers are transferable but generic TypedArrays are not\n // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)\n var initArray = segment.initSegment;\n segment.initSegment = {\n data: initArray.buffer,\n byteOffset: initArray.byteOffset,\n byteLength: initArray.byteLength\n };\n var typedArray = segment.data;\n segment.data = typedArray.buffer;\n self.postMessage({\n action: 'data',\n segment: segment,\n byteOffset: typedArray.byteOffset,\n byteLength: typedArray.byteLength\n }, [segment.data]);\n });\n transmuxer.on('done', function (data) {\n self.postMessage({\n action: 'done'\n });\n });\n transmuxer.on('gopInfo', function (gopInfo) {\n self.postMessage({\n action: 'gopInfo',\n gopInfo: gopInfo\n });\n });\n transmuxer.on('videoSegmentTimingInfo', function (timingInfo) {\n var videoSegmentTimingInfo = {\n start: {\n decode: clock.videoTsToSeconds(timingInfo.start.dts),\n presentation: clock.videoTsToSeconds(timingInfo.start.pts)\n },\n end: {\n decode: clock.videoTsToSeconds(timingInfo.end.dts),\n presentation: clock.videoTsToSeconds(timingInfo.end.pts)\n },\n baseMediaDecodeTime: clock.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n };\n\n if (timingInfo.prependedContentDuration) {\n videoSegmentTimingInfo.prependedContentDuration = clock.videoTsToSeconds(timingInfo.prependedContentDuration);\n }\n\n self.postMessage({\n action: 'videoSegmentTimingInfo',\n videoSegmentTimingInfo: videoSegmentTimingInfo\n });\n });\n transmuxer.on('audioSegmentTimingInfo', function (timingInfo) {\n // Note that all times for [audio/video]SegmentTimingInfo events are in video clock\n var audioSegmentTimingInfo = {\n start: {\n decode: clock.videoTsToSeconds(timingInfo.start.dts),\n presentation: clock.videoTsToSeconds(timingInfo.start.pts)\n },\n end: {\n decode: clock.videoTsToSeconds(timingInfo.end.dts),\n presentation: clock.videoTsToSeconds(timingInfo.end.pts)\n },\n baseMediaDecodeTime: clock.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n };\n\n if (timingInfo.prependedContentDuration) {\n audioSegmentTimingInfo.prependedContentDuration = clock.videoTsToSeconds(timingInfo.prependedContentDuration);\n }\n\n self.postMessage({\n action: 'audioSegmentTimingInfo',\n audioSegmentTimingInfo: audioSegmentTimingInfo\n });\n });\n transmuxer.on('id3Frame', function (id3Frame) {\n self.postMessage({\n action: 'id3Frame',\n id3Frame: id3Frame\n });\n });\n transmuxer.on('caption', function (caption) {\n self.postMessage({\n action: 'caption',\n caption: caption\n });\n });\n transmuxer.on('trackinfo', function (trackInfo) {\n self.postMessage({\n action: 'trackinfo',\n trackInfo: trackInfo\n });\n });\n transmuxer.on('audioTimingInfo', function (audioTimingInfo) {\n // convert to video TS since we prioritize video time over audio\n self.postMessage({\n action: 'audioTimingInfo',\n audioTimingInfo: {\n start: clock.videoTsToSeconds(audioTimingInfo.start),\n end: clock.videoTsToSeconds(audioTimingInfo.end)\n }\n });\n });\n transmuxer.on('videoTimingInfo', function (videoTimingInfo) {\n self.postMessage({\n action: 'videoTimingInfo',\n videoTimingInfo: {\n start: clock.videoTsToSeconds(videoTimingInfo.start),\n end: clock.videoTsToSeconds(videoTimingInfo.end)\n }\n });\n });\n transmuxer.on('log', function (log) {\n self.postMessage({\n action: 'log',\n log: log\n });\n });\n };\n /**\n * All incoming messages route through this hash. If no function exists\n * to handle an incoming message, then we ignore the message.\n *\n * @class MessageHandlers\n * @param {Object} options the options to initialize with\n */\n\n\n var MessageHandlers = /*#__PURE__*/function () {\n function MessageHandlers(self, options) {\n this.options = options || {};\n this.self = self;\n this.init();\n }\n /**\n * initialize our web worker and wire all the events.\n */\n\n\n var _proto = MessageHandlers.prototype;\n\n _proto.init = function init() {\n if (this.transmuxer) {\n this.transmuxer.dispose();\n }\n\n this.transmuxer = new transmuxer.Transmuxer(this.options);\n wireTransmuxerEvents(this.self, this.transmuxer);\n };\n\n _proto.pushMp4Captions = function pushMp4Captions(data) {\n if (!this.captionParser) {\n this.captionParser = new captionParser();\n this.captionParser.init();\n }\n\n var segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n var parsed = this.captionParser.parse(segment, data.trackIds, data.timescales);\n this.self.postMessage({\n action: 'mp4Captions',\n captions: parsed && parsed.captions || [],\n logs: parsed && parsed.logs || [],\n data: segment.buffer\n }, [segment.buffer]);\n };\n\n _proto.probeMp4StartTime = function probeMp4StartTime(_ref) {\n var timescales = _ref.timescales,\n data = _ref.data;\n var startTime = probe$2.startTime(timescales, data);\n this.self.postMessage({\n action: 'probeMp4StartTime',\n startTime: startTime,\n data: data\n }, [data.buffer]);\n };\n\n _proto.probeMp4Tracks = function probeMp4Tracks(_ref2) {\n var data = _ref2.data;\n var tracks = probe$2.tracks(data);\n this.self.postMessage({\n action: 'probeMp4Tracks',\n tracks: tracks,\n data: data\n }, [data.buffer]);\n }\n /**\n * Probe an mpeg2-ts segment to determine the start time of the segment in it's\n * internal \"media time,\" as well as whether it contains video and/or audio.\n *\n * @private\n * @param {Uint8Array} bytes - segment bytes\n * @param {number} baseStartTime\n * Relative reference timestamp used when adjusting frame timestamps for rollover.\n * This value should be in seconds, as it's converted to a 90khz clock within the\n * function body.\n * @return {Object} The start time of the current segment in \"media time\" as well as\n * whether it contains video and/or audio\n */\n ;\n\n _proto.probeTs = function probeTs(_ref3) {\n var data = _ref3.data,\n baseStartTime = _ref3.baseStartTime;\n var tsStartTime = typeof baseStartTime === 'number' && !isNaN(baseStartTime) ? baseStartTime * clock.ONE_SECOND_IN_TS : void 0;\n var timeInfo = tsInspector.inspect(data, tsStartTime);\n var result = null;\n\n if (timeInfo) {\n result = {\n // each type's time info comes back as an array of 2 times, start and end\n hasVideo: timeInfo.video && timeInfo.video.length === 2 || false,\n hasAudio: timeInfo.audio && timeInfo.audio.length === 2 || false\n };\n\n if (result.hasVideo) {\n result.videoStart = timeInfo.video[0].ptsTime;\n }\n\n if (result.hasAudio) {\n result.audioStart = timeInfo.audio[0].ptsTime;\n }\n }\n\n this.self.postMessage({\n action: 'probeTs',\n result: result,\n data: data\n }, [data.buffer]);\n };\n\n _proto.clearAllMp4Captions = function clearAllMp4Captions() {\n if (this.captionParser) {\n this.captionParser.clearAllCaptions();\n }\n };\n\n _proto.clearParsedMp4Captions = function clearParsedMp4Captions() {\n if (this.captionParser) {\n this.captionParser.clearParsedCaptions();\n }\n }\n /**\n * Adds data (a ts segment) to the start of the transmuxer pipeline for\n * processing.\n *\n * @param {ArrayBuffer} data data to push into the muxer\n */\n ;\n\n _proto.push = function push(data) {\n // Cast array buffer to correct type for transmuxer\n var segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n this.transmuxer.push(segment);\n }\n /**\n * Recreate the transmuxer so that the next segment added via `push`\n * start with a fresh transmuxer.\n */\n ;\n\n _proto.reset = function reset() {\n this.transmuxer.reset();\n }\n /**\n * Set the value that will be used as the `baseMediaDecodeTime` time for the\n * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`\n * set relative to the first based on the PTS values.\n *\n * @param {Object} data used to set the timestamp offset in the muxer\n */\n ;\n\n _proto.setTimestampOffset = function setTimestampOffset(data) {\n var timestampOffset = data.timestampOffset || 0;\n this.transmuxer.setBaseMediaDecodeTime(Math.round(clock.secondsToVideoTs(timestampOffset)));\n };\n\n _proto.setAudioAppendStart = function setAudioAppendStart(data) {\n this.transmuxer.setAudioAppendStart(Math.ceil(clock.secondsToVideoTs(data.appendStart)));\n };\n\n _proto.setRemux = function setRemux(data) {\n this.transmuxer.setRemux(data.remux);\n }\n /**\n * Forces the pipeline to finish processing the last segment and emit it's\n * results.\n *\n * @param {Object} data event data, not really used\n */\n ;\n\n _proto.flush = function flush(data) {\n this.transmuxer.flush(); // transmuxed done action is fired after both audio/video pipelines are flushed\n\n self.postMessage({\n action: 'done',\n type: 'transmuxed'\n });\n };\n\n _proto.endTimeline = function endTimeline() {\n this.transmuxer.endTimeline(); // transmuxed endedtimeline action is fired after both audio/video pipelines end their\n // timelines\n\n self.postMessage({\n action: 'endedtimeline',\n type: 'transmuxed'\n });\n };\n\n _proto.alignGopsWith = function alignGopsWith(data) {\n this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());\n };\n\n return MessageHandlers;\n }();\n /**\n * Our web worker interface so that things can talk to mux.js\n * that will be running in a web worker. the scope is passed to this by\n * webworkify.\n *\n * @param {Object} self the scope for the web worker\n */\n\n\n self.onmessage = function (event) {\n if (event.data.action === 'init' && event.data.options) {\n this.messageHandlers = new MessageHandlers(self, event.data.options);\n return;\n }\n\n if (!this.messageHandlers) {\n this.messageHandlers = new MessageHandlers(self);\n }\n\n if (event.data && event.data.action && event.data.action !== 'init') {\n if (this.messageHandlers[event.data.action]) {\n this.messageHandlers[event.data.action](event.data);\n }\n }\n };\n}));\nvar TransmuxWorker = factory(workerCode$1);\n/* rollup-plugin-worker-factory end for worker!/Users/ddashkevich/projects/http-streaming/src/transmuxer-worker.js */\n\nvar handleData_ = function handleData_(event, transmuxedData, callback) {\n var _event$data$segment = event.data.segment,\n type = _event$data$segment.type,\n initSegment = _event$data$segment.initSegment,\n captions = _event$data$segment.captions,\n captionStreams = _event$data$segment.captionStreams,\n metadata = _event$data$segment.metadata,\n videoFrameDtsTime = _event$data$segment.videoFrameDtsTime,\n videoFramePtsTime = _event$data$segment.videoFramePtsTime;\n transmuxedData.buffer.push({\n captions: captions,\n captionStreams: captionStreams,\n metadata: metadata\n });\n var boxes = event.data.segment.boxes || {\n data: event.data.segment.data\n };\n var result = {\n type: type,\n // cast ArrayBuffer to TypedArray\n data: new Uint8Array(boxes.data, boxes.data.byteOffset, boxes.data.byteLength),\n initSegment: new Uint8Array(initSegment.data, initSegment.byteOffset, initSegment.byteLength)\n };\n\n if (typeof videoFrameDtsTime !== 'undefined') {\n result.videoFrameDtsTime = videoFrameDtsTime;\n }\n\n if (typeof videoFramePtsTime !== 'undefined') {\n result.videoFramePtsTime = videoFramePtsTime;\n }\n\n callback(result);\n};\n\nvar handleDone_ = function handleDone_(_ref) {\n var transmuxedData = _ref.transmuxedData,\n callback = _ref.callback; // Previously we only returned data on data events,\n // not on done events. Clear out the buffer to keep that consistent.\n\n transmuxedData.buffer = []; // all buffers should have been flushed from the muxer, so start processing anything we\n // have received\n\n callback(transmuxedData);\n};\n\nvar handleGopInfo_ = function handleGopInfo_(event, transmuxedData) {\n transmuxedData.gopInfo = event.data.gopInfo;\n};\n\nvar processTransmux = function processTransmux(options) {\n var transmuxer = options.transmuxer,\n bytes = options.bytes,\n audioAppendStart = options.audioAppendStart,\n gopsToAlignWith = options.gopsToAlignWith,\n remux = options.remux,\n onData = options.onData,\n onTrackInfo = options.onTrackInfo,\n onAudioTimingInfo = options.onAudioTimingInfo,\n onVideoTimingInfo = options.onVideoTimingInfo,\n onVideoSegmentTimingInfo = options.onVideoSegmentTimingInfo,\n onAudioSegmentTimingInfo = options.onAudioSegmentTimingInfo,\n onId3 = options.onId3,\n onCaptions = options.onCaptions,\n onDone = options.onDone,\n onEndedTimeline = options.onEndedTimeline,\n onTransmuxerLog = options.onTransmuxerLog,\n isEndOfTimeline = options.isEndOfTimeline;\n var transmuxedData = {\n buffer: []\n };\n var waitForEndedTimelineEvent = isEndOfTimeline;\n\n var handleMessage = function handleMessage(event) {\n if (transmuxer.currentTransmux !== options) {\n // disposed\n return;\n }\n\n if (event.data.action === 'data') {\n handleData_(event, transmuxedData, onData);\n }\n\n if (event.data.action === 'trackinfo') {\n onTrackInfo(event.data.trackInfo);\n }\n\n if (event.data.action === 'gopInfo') {\n handleGopInfo_(event, transmuxedData);\n }\n\n if (event.data.action === 'audioTimingInfo') {\n onAudioTimingInfo(event.data.audioTimingInfo);\n }\n\n if (event.data.action === 'videoTimingInfo') {\n onVideoTimingInfo(event.data.videoTimingInfo);\n }\n\n if (event.data.action === 'videoSegmentTimingInfo') {\n onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo);\n }\n\n if (event.data.action === 'audioSegmentTimingInfo') {\n onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo);\n }\n\n if (event.data.action === 'id3Frame') {\n onId3([event.data.id3Frame], event.data.id3Frame.dispatchType);\n }\n\n if (event.data.action === 'caption') {\n onCaptions(event.data.caption);\n }\n\n if (event.data.action === 'endedtimeline') {\n waitForEndedTimelineEvent = false;\n onEndedTimeline();\n }\n\n if (event.data.action === 'log') {\n onTransmuxerLog(event.data.log);\n } // wait for the transmuxed event since we may have audio and video\n\n\n if (event.data.type !== 'transmuxed') {\n return;\n } // If the \"endedtimeline\" event has not yet fired, and this segment represents the end\n // of a timeline, that means there may still be data events before the segment\n // processing can be considerred complete. In that case, the final event should be\n // an \"endedtimeline\" event with the type \"transmuxed.\"\n\n\n if (waitForEndedTimelineEvent) {\n return;\n }\n\n transmuxer.onmessage = null;\n handleDone_({\n transmuxedData: transmuxedData,\n callback: onDone\n });\n /* eslint-disable no-use-before-define */\n\n dequeue(transmuxer);\n /* eslint-enable */\n };\n\n transmuxer.onmessage = handleMessage;\n\n if (audioAppendStart) {\n transmuxer.postMessage({\n action: 'setAudioAppendStart',\n appendStart: audioAppendStart\n });\n } // allow empty arrays to be passed to clear out GOPs\n\n\n if (Array.isArray(gopsToAlignWith)) {\n transmuxer.postMessage({\n action: 'alignGopsWith',\n gopsToAlignWith: gopsToAlignWith\n });\n }\n\n if (typeof remux !== 'undefined') {\n transmuxer.postMessage({\n action: 'setRemux',\n remux: remux\n });\n }\n\n if (bytes.byteLength) {\n var buffer = bytes instanceof ArrayBuffer ? bytes : bytes.buffer;\n var byteOffset = bytes instanceof ArrayBuffer ? 0 : bytes.byteOffset;\n transmuxer.postMessage({\n action: 'push',\n // Send the typed-array of data as an ArrayBuffer so that\n // it can be sent as a \"Transferable\" and avoid the costly\n // memory copy\n data: buffer,\n // To recreate the original typed-array, we need information\n // about what portion of the ArrayBuffer it was a view into\n byteOffset: byteOffset,\n byteLength: bytes.byteLength\n }, [buffer]);\n }\n\n if (isEndOfTimeline) {\n transmuxer.postMessage({\n action: 'endTimeline'\n });\n } // even if we didn't push any bytes, we have to make sure we flush in case we reached\n // the end of the segment\n\n\n transmuxer.postMessage({\n action: 'flush'\n });\n};\n\nvar dequeue = function dequeue(transmuxer) {\n transmuxer.currentTransmux = null;\n\n if (transmuxer.transmuxQueue.length) {\n transmuxer.currentTransmux = transmuxer.transmuxQueue.shift();\n\n if (typeof transmuxer.currentTransmux === 'function') {\n transmuxer.currentTransmux();\n } else {\n processTransmux(transmuxer.currentTransmux);\n }\n }\n};\n\nvar processAction = function processAction(transmuxer, action) {\n transmuxer.postMessage({\n action: action\n });\n dequeue(transmuxer);\n};\n\nvar enqueueAction = function enqueueAction(action, transmuxer) {\n if (!transmuxer.currentTransmux) {\n transmuxer.currentTransmux = action;\n processAction(transmuxer, action);\n return;\n }\n\n transmuxer.transmuxQueue.push(processAction.bind(null, transmuxer, action));\n};\n\nvar reset = function reset(transmuxer) {\n enqueueAction('reset', transmuxer);\n};\n\nvar endTimeline = function endTimeline(transmuxer) {\n enqueueAction('endTimeline', transmuxer);\n};\n\nvar transmux = function transmux(options) {\n if (!options.transmuxer.currentTransmux) {\n options.transmuxer.currentTransmux = options;\n processTransmux(options);\n return;\n }\n\n options.transmuxer.transmuxQueue.push(options);\n};\n\nvar createTransmuxer = function createTransmuxer(options) {\n var transmuxer = new TransmuxWorker();\n transmuxer.currentTransmux = null;\n transmuxer.transmuxQueue = [];\n var term = transmuxer.terminate;\n\n transmuxer.terminate = function () {\n transmuxer.currentTransmux = null;\n transmuxer.transmuxQueue.length = 0;\n return term.call(transmuxer);\n };\n\n transmuxer.postMessage({\n action: 'init',\n options: options\n });\n return transmuxer;\n};\n\nvar segmentTransmuxer = {\n reset: reset,\n endTimeline: endTimeline,\n transmux: transmux,\n createTransmuxer: createTransmuxer\n};\n\nvar workerCallback = function workerCallback(options) {\n var transmuxer = options.transmuxer;\n var endAction = options.endAction || options.action;\n var callback = options.callback;\n\n var message = _extends({}, options, {\n endAction: null,\n transmuxer: null,\n callback: null\n });\n\n var listenForEndEvent = function listenForEndEvent(event) {\n if (event.data.action !== endAction) {\n return;\n }\n\n transmuxer.removeEventListener('message', listenForEndEvent); // transfer ownership of bytes back to us.\n\n if (event.data.data) {\n event.data.data = new Uint8Array(event.data.data, options.byteOffset || 0, options.byteLength || event.data.data.byteLength);\n\n if (options.data) {\n options.data = event.data.data;\n }\n }\n\n callback(event.data);\n };\n\n transmuxer.addEventListener('message', listenForEndEvent);\n\n if (options.data) {\n var isArrayBuffer = options.data instanceof ArrayBuffer;\n message.byteOffset = isArrayBuffer ? 0 : options.data.byteOffset;\n message.byteLength = options.data.byteLength;\n var transfers = [isArrayBuffer ? options.data : options.data.buffer];\n transmuxer.postMessage(message, transfers);\n } else {\n transmuxer.postMessage(message);\n }\n};\n\nvar REQUEST_ERRORS = {\n FAILURE: 2,\n TIMEOUT: -101,\n ABORTED: -102\n};\n/**\n * Abort all requests\n *\n * @param {Object} activeXhrs - an object that tracks all XHR requests\n */\n\nvar abortAll = function abortAll(activeXhrs) {\n activeXhrs.forEach(function (xhr) {\n xhr.abort();\n });\n};\n/**\n * Gather important bandwidth stats once a request has completed\n *\n * @param {Object} request - the XHR request from which to gather stats\n */\n\n\nvar getRequestStats = function getRequestStats(request) {\n return {\n bandwidth: request.bandwidth,\n bytesReceived: request.bytesReceived || 0,\n roundTripTime: request.roundTripTime || 0\n };\n};\n/**\n * If possible gather bandwidth stats as a request is in\n * progress\n *\n * @param {Event} progressEvent - an event object from an XHR's progress event\n */\n\n\nvar getProgressStats = function getProgressStats(progressEvent) {\n var request = progressEvent.target;\n var roundTripTime = Date.now() - request.requestTime;\n var stats = {\n bandwidth: Infinity,\n bytesReceived: 0,\n roundTripTime: roundTripTime || 0\n };\n stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok\n // because we should only use bandwidth stats on progress to determine when\n // abort a request early due to insufficient bandwidth\n\n stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);\n return stats;\n};\n/**\n * Handle all error conditions in one place and return an object\n * with all the information\n *\n * @param {Error|null} error - if non-null signals an error occured with the XHR\n * @param {Object} request - the XHR request that possibly generated the error\n */\n\n\nvar handleErrors = function handleErrors(error, request) {\n if (request.timedout) {\n return {\n status: request.status,\n message: 'HLS request timed-out at URL: ' + request.uri,\n code: REQUEST_ERRORS.TIMEOUT,\n xhr: request\n };\n }\n\n if (request.aborted) {\n return {\n status: request.status,\n message: 'HLS request aborted at URL: ' + request.uri,\n code: REQUEST_ERRORS.ABORTED,\n xhr: request\n };\n }\n\n if (error) {\n return {\n status: request.status,\n message: 'HLS request errored at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n };\n }\n\n if (request.responseType === 'arraybuffer' && request.response.byteLength === 0) {\n return {\n status: request.status,\n message: 'Empty HLS response at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n };\n }\n\n return null;\n};\n/**\n * Handle responses for key data and convert the key data to the correct format\n * for the decryption step later\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Array} objects - objects to add the key bytes to.\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\n\nvar handleKeyResponse = function handleKeyResponse(segment, objects, finishProcessingFn) {\n return function (error, request) {\n var response = request.response;\n var errorObj = handleErrors(error, request);\n\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n\n if (response.byteLength !== 16) {\n return finishProcessingFn({\n status: request.status,\n message: 'Invalid HLS key at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n }, segment);\n }\n\n var view = new DataView(response);\n var bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);\n\n for (var i = 0; i < objects.length; i++) {\n objects[i].bytes = bytes;\n }\n\n return finishProcessingFn(null, segment);\n };\n};\n\nvar parseInitSegment = function parseInitSegment(segment, _callback) {\n var type = detectContainerForBytes(segment.map.bytes); // TODO: We should also handle ts init segments here, but we\n // only know how to parse mp4 init segments at the moment\n\n if (type !== 'mp4') {\n var uri = segment.map.resolvedUri || segment.map.uri;\n return _callback({\n internal: true,\n message: \"Found unsupported \" + (type || 'unknown') + \" container for initialization segment at URL: \" + uri,\n code: REQUEST_ERRORS.FAILURE\n });\n }\n\n workerCallback({\n action: 'probeMp4Tracks',\n data: segment.map.bytes,\n transmuxer: segment.transmuxer,\n callback: function callback(_ref) {\n var tracks = _ref.tracks,\n data = _ref.data; // transfer bytes back to us\n\n segment.map.bytes = data;\n tracks.forEach(function (track) {\n segment.map.tracks = segment.map.tracks || {}; // only support one track of each type for now\n\n if (segment.map.tracks[track.type]) {\n return;\n }\n\n segment.map.tracks[track.type] = track;\n\n if (typeof track.id === 'number' && track.timescale) {\n segment.map.timescales = segment.map.timescales || {};\n segment.map.timescales[track.id] = track.timescale;\n }\n });\n return _callback(null);\n }\n });\n};\n/**\n * Handle init-segment responses\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\n\nvar handleInitSegmentResponse = function handleInitSegmentResponse(_ref2) {\n var segment = _ref2.segment,\n finishProcessingFn = _ref2.finishProcessingFn;\n return function (error, request) {\n var errorObj = handleErrors(error, request);\n\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n\n var bytes = new Uint8Array(request.response); // init segment is encypted, we will have to wait\n // until the key request is done to decrypt.\n\n if (segment.map.key) {\n segment.map.encryptedBytes = bytes;\n return finishProcessingFn(null, segment);\n }\n\n segment.map.bytes = bytes;\n parseInitSegment(segment, function (parseError) {\n if (parseError) {\n parseError.xhr = request;\n parseError.status = request.status;\n return finishProcessingFn(parseError, segment);\n }\n\n finishProcessingFn(null, segment);\n });\n };\n};\n/**\n * Response handler for segment-requests being sure to set the correct\n * property depending on whether the segment is encryped or not\n * Also records and keeps track of stats that are used for ABR purposes\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\n\nvar handleSegmentResponse = function handleSegmentResponse(_ref3) {\n var segment = _ref3.segment,\n finishProcessingFn = _ref3.finishProcessingFn,\n responseType = _ref3.responseType;\n return function (error, request) {\n var errorObj = handleErrors(error, request);\n\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n\n var newBytes = // although responseText \"should\" exist, this guard serves to prevent an error being\n // thrown for two primary cases:\n // 1. the mime type override stops working, or is not implemented for a specific\n // browser\n // 2. when using mock XHR libraries like sinon that do not allow the override behavior\n responseType === 'arraybuffer' || !request.responseText ? request.response : stringToArrayBuffer(request.responseText.substring(segment.lastReachedChar || 0));\n segment.stats = getRequestStats(request);\n\n if (segment.key) {\n segment.encryptedBytes = new Uint8Array(newBytes);\n } else {\n segment.bytes = new Uint8Array(newBytes);\n }\n\n return finishProcessingFn(null, segment);\n };\n};\n\nvar transmuxAndNotify = function transmuxAndNotify(_ref4) {\n var segment = _ref4.segment,\n bytes = _ref4.bytes,\n trackInfoFn = _ref4.trackInfoFn,\n timingInfoFn = _ref4.timingInfoFn,\n videoSegmentTimingInfoFn = _ref4.videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn = _ref4.audioSegmentTimingInfoFn,\n id3Fn = _ref4.id3Fn,\n captionsFn = _ref4.captionsFn,\n isEndOfTimeline = _ref4.isEndOfTimeline,\n endedTimelineFn = _ref4.endedTimelineFn,\n dataFn = _ref4.dataFn,\n doneFn = _ref4.doneFn,\n onTransmuxerLog = _ref4.onTransmuxerLog;\n var fmp4Tracks = segment.map && segment.map.tracks || {};\n var isMuxed = Boolean(fmp4Tracks.audio && fmp4Tracks.video); // Keep references to each function so we can null them out after we're done with them.\n // One reason for this is that in the case of full segments, we want to trust start\n // times from the probe, rather than the transmuxer.\n\n var audioStartFn = timingInfoFn.bind(null, segment, 'audio', 'start');\n var audioEndFn = timingInfoFn.bind(null, segment, 'audio', 'end');\n var videoStartFn = timingInfoFn.bind(null, segment, 'video', 'start');\n var videoEndFn = timingInfoFn.bind(null, segment, 'video', 'end');\n\n var finish = function finish() {\n return transmux({\n bytes: bytes,\n transmuxer: segment.transmuxer,\n audioAppendStart: segment.audioAppendStart,\n gopsToAlignWith: segment.gopsToAlignWith,\n remux: isMuxed,\n onData: function onData(result) {\n result.type = result.type === 'combined' ? 'video' : result.type;\n dataFn(segment, result);\n },\n onTrackInfo: function onTrackInfo(trackInfo) {\n if (trackInfoFn) {\n if (isMuxed) {\n trackInfo.isMuxed = true;\n }\n\n trackInfoFn(segment, trackInfo);\n }\n },\n onAudioTimingInfo: function onAudioTimingInfo(audioTimingInfo) {\n // we only want the first start value we encounter\n if (audioStartFn && typeof audioTimingInfo.start !== 'undefined') {\n audioStartFn(audioTimingInfo.start);\n audioStartFn = null;\n } // we want to continually update the end time\n\n\n if (audioEndFn && typeof audioTimingInfo.end !== 'undefined') {\n audioEndFn(audioTimingInfo.end);\n }\n },\n onVideoTimingInfo: function onVideoTimingInfo(videoTimingInfo) {\n // we only want the first start value we encounter\n if (videoStartFn && typeof videoTimingInfo.start !== 'undefined') {\n videoStartFn(videoTimingInfo.start);\n videoStartFn = null;\n } // we want to continually update the end time\n\n\n if (videoEndFn && typeof videoTimingInfo.end !== 'undefined') {\n videoEndFn(videoTimingInfo.end);\n }\n },\n onVideoSegmentTimingInfo: function onVideoSegmentTimingInfo(videoSegmentTimingInfo) {\n videoSegmentTimingInfoFn(videoSegmentTimingInfo);\n },\n onAudioSegmentTimingInfo: function onAudioSegmentTimingInfo(audioSegmentTimingInfo) {\n audioSegmentTimingInfoFn(audioSegmentTimingInfo);\n },\n onId3: function onId3(id3Frames, dispatchType) {\n id3Fn(segment, id3Frames, dispatchType);\n },\n onCaptions: function onCaptions(captions) {\n captionsFn(segment, [captions]);\n },\n isEndOfTimeline: isEndOfTimeline,\n onEndedTimeline: function onEndedTimeline() {\n endedTimelineFn();\n },\n onTransmuxerLog: onTransmuxerLog,\n onDone: function onDone(result) {\n if (!doneFn) {\n return;\n }\n\n result.type = result.type === 'combined' ? 'video' : result.type;\n doneFn(null, segment, result);\n }\n });\n }; // In the transmuxer, we don't yet have the ability to extract a \"proper\" start time.\n // Meaning cached frame data may corrupt our notion of where this segment\n // really starts. To get around this, probe for the info needed.\n\n\n workerCallback({\n action: 'probeTs',\n transmuxer: segment.transmuxer,\n data: bytes,\n baseStartTime: segment.baseStartTime,\n callback: function callback(data) {\n segment.bytes = bytes = data.data;\n var probeResult = data.result;\n\n if (probeResult) {\n trackInfoFn(segment, {\n hasAudio: probeResult.hasAudio,\n hasVideo: probeResult.hasVideo,\n isMuxed: isMuxed\n });\n trackInfoFn = null;\n\n if (probeResult.hasAudio && !isMuxed) {\n audioStartFn(probeResult.audioStart);\n }\n\n if (probeResult.hasVideo) {\n videoStartFn(probeResult.videoStart);\n }\n\n audioStartFn = null;\n videoStartFn = null;\n }\n\n finish();\n }\n });\n};\n\nvar handleSegmentBytes = function handleSegmentBytes(_ref5) {\n var segment = _ref5.segment,\n bytes = _ref5.bytes,\n trackInfoFn = _ref5.trackInfoFn,\n timingInfoFn = _ref5.timingInfoFn,\n videoSegmentTimingInfoFn = _ref5.videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn = _ref5.audioSegmentTimingInfoFn,\n id3Fn = _ref5.id3Fn,\n captionsFn = _ref5.captionsFn,\n isEndOfTimeline = _ref5.isEndOfTimeline,\n endedTimelineFn = _ref5.endedTimelineFn,\n dataFn = _ref5.dataFn,\n doneFn = _ref5.doneFn,\n onTransmuxerLog = _ref5.onTransmuxerLog;\n var bytesAsUint8Array = new Uint8Array(bytes); // TODO:\n // We should have a handler that fetches the number of bytes required\n // to check if something is fmp4. This will allow us to save bandwidth\n // because we can only blacklist a playlist and abort requests\n // by codec after trackinfo triggers.\n\n if (isLikelyFmp4MediaSegment(bytesAsUint8Array)) {\n segment.isFmp4 = true;\n var tracks = segment.map.tracks;\n var trackInfo = {\n isFmp4: true,\n hasVideo: !!tracks.video,\n hasAudio: !!tracks.audio\n }; // if we have a audio track, with a codec that is not set to\n // encrypted audio\n\n if (tracks.audio && tracks.audio.codec && tracks.audio.codec !== 'enca') {\n trackInfo.audioCodec = tracks.audio.codec;\n } // if we have a video track, with a codec that is not set to\n // encrypted video\n\n\n if (tracks.video && tracks.video.codec && tracks.video.codec !== 'encv') {\n trackInfo.videoCodec = tracks.video.codec;\n }\n\n if (tracks.video && tracks.audio) {\n trackInfo.isMuxed = true;\n } // since we don't support appending fmp4 data on progress, we know we have the full\n // segment here\n\n\n trackInfoFn(segment, trackInfo); // The probe doesn't provide the segment end time, so only callback with the start\n // time. The end time can be roughly calculated by the receiver using the duration.\n //\n // Note that the start time returned by the probe reflects the baseMediaDecodeTime, as\n // that is the true start of the segment (where the playback engine should begin\n // decoding).\n\n var finishLoading = function finishLoading(captions) {\n // if the track still has audio at this point it is only possible\n // for it to be audio only. See `tracks.video && tracks.audio` if statement\n // above.\n // we make sure to use segment.bytes here as that\n dataFn(segment, {\n data: bytesAsUint8Array,\n type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'\n });\n\n if (captions && captions.length) {\n captionsFn(segment, captions);\n }\n\n doneFn(null, segment, {});\n };\n\n workerCallback({\n action: 'probeMp4StartTime',\n timescales: segment.map.timescales,\n data: bytesAsUint8Array,\n transmuxer: segment.transmuxer,\n callback: function callback(_ref6) {\n var data = _ref6.data,\n startTime = _ref6.startTime; // transfer bytes back to us\n\n bytes = data.buffer;\n segment.bytes = bytesAsUint8Array = data;\n\n if (trackInfo.hasAudio && !trackInfo.isMuxed) {\n timingInfoFn(segment, 'audio', 'start', startTime);\n }\n\n if (trackInfo.hasVideo) {\n timingInfoFn(segment, 'video', 'start', startTime);\n } // Run through the CaptionParser in case there are captions.\n // Initialize CaptionParser if it hasn't been yet\n\n\n if (!tracks.video || !data.byteLength || !segment.transmuxer) {\n finishLoading();\n return;\n }\n\n workerCallback({\n action: 'pushMp4Captions',\n endAction: 'mp4Captions',\n transmuxer: segment.transmuxer,\n data: bytesAsUint8Array,\n timescales: segment.map.timescales,\n trackIds: [tracks.video.id],\n callback: function callback(message) {\n // transfer bytes back to us\n bytes = message.data.buffer;\n segment.bytes = bytesAsUint8Array = message.data;\n message.logs.forEach(function (log) {\n onTransmuxerLog(videojs.mergeOptions(log, {\n stream: 'mp4CaptionParser'\n }));\n });\n finishLoading(message.captions);\n }\n });\n }\n });\n return;\n } // VTT or other segments that don't need processing\n\n\n if (!segment.transmuxer) {\n doneFn(null, segment, {});\n return;\n }\n\n if (typeof segment.container === 'undefined') {\n segment.container = detectContainerForBytes(bytesAsUint8Array);\n }\n\n if (segment.container !== 'ts' && segment.container !== 'aac') {\n trackInfoFn(segment, {\n hasAudio: false,\n hasVideo: false\n });\n doneFn(null, segment, {});\n return;\n } // ts or aac\n\n\n transmuxAndNotify({\n segment: segment,\n bytes: bytes,\n trackInfoFn: trackInfoFn,\n timingInfoFn: timingInfoFn,\n videoSegmentTimingInfoFn: videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn: audioSegmentTimingInfoFn,\n id3Fn: id3Fn,\n captionsFn: captionsFn,\n isEndOfTimeline: isEndOfTimeline,\n endedTimelineFn: endedTimelineFn,\n dataFn: dataFn,\n doneFn: doneFn,\n onTransmuxerLog: onTransmuxerLog\n });\n};\n\nvar decrypt = function decrypt(_ref7, callback) {\n var id = _ref7.id,\n key = _ref7.key,\n encryptedBytes = _ref7.encryptedBytes,\n decryptionWorker = _ref7.decryptionWorker;\n\n var decryptionHandler = function decryptionHandler(event) {\n if (event.data.source === id) {\n decryptionWorker.removeEventListener('message', decryptionHandler);\n var decrypted = event.data.decrypted;\n callback(new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength));\n }\n };\n\n decryptionWorker.addEventListener('message', decryptionHandler);\n var keyBytes;\n\n if (key.bytes.slice) {\n keyBytes = key.bytes.slice();\n } else {\n keyBytes = new Uint32Array(Array.prototype.slice.call(key.bytes));\n } // incrementally decrypt the bytes\n\n\n decryptionWorker.postMessage(createTransferableMessage({\n source: id,\n encrypted: encryptedBytes,\n key: keyBytes,\n iv: key.iv\n }), [encryptedBytes.buffer, keyBytes.buffer]);\n};\n/**\n * Decrypt the segment via the decryption web worker\n *\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n * routines\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Function} doneFn - a callback that is executed after decryption has completed\n */\n\n\nvar decryptSegment = function decryptSegment(_ref8) {\n var decryptionWorker = _ref8.decryptionWorker,\n segment = _ref8.segment,\n trackInfoFn = _ref8.trackInfoFn,\n timingInfoFn = _ref8.timingInfoFn,\n videoSegmentTimingInfoFn = _ref8.videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn = _ref8.audioSegmentTimingInfoFn,\n id3Fn = _ref8.id3Fn,\n captionsFn = _ref8.captionsFn,\n isEndOfTimeline = _ref8.isEndOfTimeline,\n endedTimelineFn = _ref8.endedTimelineFn,\n dataFn = _ref8.dataFn,\n doneFn = _ref8.doneFn,\n onTransmuxerLog = _ref8.onTransmuxerLog;\n decrypt({\n id: segment.requestId,\n key: segment.key,\n encryptedBytes: segment.encryptedBytes,\n decryptionWorker: decryptionWorker\n }, function (decryptedBytes) {\n segment.bytes = decryptedBytes;\n handleSegmentBytes({\n segment: segment,\n bytes: segment.bytes,\n trackInfoFn: trackInfoFn,\n timingInfoFn: timingInfoFn,\n videoSegmentTimingInfoFn: videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn: audioSegmentTimingInfoFn,\n id3Fn: id3Fn,\n captionsFn: captionsFn,\n isEndOfTimeline: isEndOfTimeline,\n endedTimelineFn: endedTimelineFn,\n dataFn: dataFn,\n doneFn: doneFn,\n onTransmuxerLog: onTransmuxerLog\n });\n });\n};\n/**\n * This function waits for all XHRs to finish (with either success or failure)\n * before continueing processing via it's callback. The function gathers errors\n * from each request into a single errors array so that the error status for\n * each request can be examined later.\n *\n * @param {Object} activeXhrs - an object that tracks all XHR requests\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n * routines\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} id3Fn - a callback that receives ID3 metadata\n * @param {Function} captionsFn - a callback that receives captions\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Function} doneFn - a callback that is executed after all resources have been\n * downloaded and any decryption completed\n */\n\n\nvar waitForCompletion = function waitForCompletion(_ref9) {\n var activeXhrs = _ref9.activeXhrs,\n decryptionWorker = _ref9.decryptionWorker,\n trackInfoFn = _ref9.trackInfoFn,\n timingInfoFn = _ref9.timingInfoFn,\n videoSegmentTimingInfoFn = _ref9.videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn = _ref9.audioSegmentTimingInfoFn,\n id3Fn = _ref9.id3Fn,\n captionsFn = _ref9.captionsFn,\n isEndOfTimeline = _ref9.isEndOfTimeline,\n endedTimelineFn = _ref9.endedTimelineFn,\n dataFn = _ref9.dataFn,\n doneFn = _ref9.doneFn,\n onTransmuxerLog = _ref9.onTransmuxerLog;\n var count = 0;\n var didError = false;\n return function (error, segment) {\n if (didError) {\n return;\n }\n\n if (error) {\n didError = true; // If there are errors, we have to abort any outstanding requests\n\n abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we\n // handle the aborted events from those requests, there are some cases where we may\n // never get an aborted event. For instance, if the network connection is lost and\n // there were two requests, the first may have triggered an error immediately, while\n // the second request remains unsent. In that case, the aborted algorithm will not\n // trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method\n //\n // We also can't rely on the ready state of the XHR, since the request that\n // triggered the connection error may also show as a ready state of 0 (unsent).\n // Therefore, we have to finish this group of requests immediately after the first\n // seen error.\n\n return doneFn(error, segment);\n }\n\n count += 1;\n\n if (count === activeXhrs.length) {\n var segmentFinish = function segmentFinish() {\n if (segment.encryptedBytes) {\n return decryptSegment({\n decryptionWorker: decryptionWorker,\n segment: segment,\n trackInfoFn: trackInfoFn,\n timingInfoFn: timingInfoFn,\n videoSegmentTimingInfoFn: videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn: audioSegmentTimingInfoFn,\n id3Fn: id3Fn,\n captionsFn: captionsFn,\n isEndOfTimeline: isEndOfTimeline,\n endedTimelineFn: endedTimelineFn,\n dataFn: dataFn,\n doneFn: doneFn,\n onTransmuxerLog: onTransmuxerLog\n });\n } // Otherwise, everything is ready just continue\n\n\n handleSegmentBytes({\n segment: segment,\n bytes: segment.bytes,\n trackInfoFn: trackInfoFn,\n timingInfoFn: timingInfoFn,\n videoSegmentTimingInfoFn: videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn: audioSegmentTimingInfoFn,\n id3Fn: id3Fn,\n captionsFn: captionsFn,\n isEndOfTimeline: isEndOfTimeline,\n endedTimelineFn: endedTimelineFn,\n dataFn: dataFn,\n doneFn: doneFn,\n onTransmuxerLog: onTransmuxerLog\n });\n }; // Keep track of when *all* of the requests have completed\n\n\n segment.endOfAllRequests = Date.now();\n\n if (segment.map && segment.map.encryptedBytes && !segment.map.bytes) {\n return decrypt({\n decryptionWorker: decryptionWorker,\n // add -init to the \"id\" to differentiate between segment\n // and init segment decryption, just in case they happen\n // at the same time at some point in the future.\n id: segment.requestId + '-init',\n encryptedBytes: segment.map.encryptedBytes,\n key: segment.map.key\n }, function (decryptedBytes) {\n segment.map.bytes = decryptedBytes;\n parseInitSegment(segment, function (parseError) {\n if (parseError) {\n abortAll(activeXhrs);\n return doneFn(parseError, segment);\n }\n\n segmentFinish();\n });\n });\n }\n\n segmentFinish();\n }\n };\n};\n/**\n * Calls the abort callback if any request within the batch was aborted. Will only call\n * the callback once per batch of requests, even if multiple were aborted.\n *\n * @param {Object} loadendState - state to check to see if the abort function was called\n * @param {Function} abortFn - callback to call for abort\n */\n\n\nvar handleLoadEnd = function handleLoadEnd(_ref10) {\n var loadendState = _ref10.loadendState,\n abortFn = _ref10.abortFn;\n return function (event) {\n var request = event.target;\n\n if (request.aborted && abortFn && !loadendState.calledAbortFn) {\n abortFn();\n loadendState.calledAbortFn = true;\n }\n };\n};\n/**\n * Simple progress event callback handler that gathers some stats before\n * executing a provided callback with the `segment` object\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} progressFn - a callback that is executed each time a progress event\n * is received\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Event} event - the progress event object from XMLHttpRequest\n */\n\n\nvar handleProgress = function handleProgress(_ref11) {\n var segment = _ref11.segment,\n progressFn = _ref11.progressFn;\n _ref11.trackInfoFn;\n _ref11.timingInfoFn;\n _ref11.videoSegmentTimingInfoFn;\n _ref11.audioSegmentTimingInfoFn;\n _ref11.id3Fn;\n _ref11.captionsFn;\n _ref11.isEndOfTimeline;\n _ref11.endedTimelineFn;\n _ref11.dataFn;\n return function (event) {\n var request = event.target;\n\n if (request.aborted) {\n return;\n }\n\n segment.stats = videojs.mergeOptions(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data\n\n if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {\n segment.stats.firstBytesReceivedAt = Date.now();\n }\n\n return progressFn(event, segment);\n };\n};\n/**\n * Load all resources and does any processing necessary for a media-segment\n *\n * Features:\n * decrypts the media-segment if it has a key uri and an iv\n * aborts *all* requests if *any* one request fails\n *\n * The segment object, at minimum, has the following format:\n * {\n * resolvedUri: String,\n * [transmuxer]: Object,\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * [key]: {\n * resolvedUri: String\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * iv: {\n * bytes: Uint32Array\n * }\n * },\n * [map]: {\n * resolvedUri: String,\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * [bytes]: Uint8Array\n * }\n * }\n * ...where [name] denotes optional properties\n *\n * @param {Function} xhr - an instance of the xhr wrapper in xhr.js\n * @param {Object} xhrOptions - the base options to provide to all xhr requests\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128\n * decryption routines\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} abortFn - a callback called (only once) if any piece of a request was\n * aborted\n * @param {Function} progressFn - a callback that receives progress events from the main\n * segment's xhr request\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} id3Fn - a callback that receives ID3 metadata\n * @param {Function} captionsFn - a callback that receives captions\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that receives data from the main segment's xhr\n * request, transmuxed if needed\n * @param {Function} doneFn - a callback that is executed only once all requests have\n * succeeded or failed\n * @return {Function} a function that, when invoked, immediately aborts all\n * outstanding requests\n */\n\n\nvar mediaSegmentRequest = function mediaSegmentRequest(_ref12) {\n var xhr = _ref12.xhr,\n xhrOptions = _ref12.xhrOptions,\n decryptionWorker = _ref12.decryptionWorker,\n segment = _ref12.segment,\n abortFn = _ref12.abortFn,\n progressFn = _ref12.progressFn,\n trackInfoFn = _ref12.trackInfoFn,\n timingInfoFn = _ref12.timingInfoFn,\n videoSegmentTimingInfoFn = _ref12.videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn = _ref12.audioSegmentTimingInfoFn,\n id3Fn = _ref12.id3Fn,\n captionsFn = _ref12.captionsFn,\n isEndOfTimeline = _ref12.isEndOfTimeline,\n endedTimelineFn = _ref12.endedTimelineFn,\n dataFn = _ref12.dataFn,\n doneFn = _ref12.doneFn,\n onTransmuxerLog = _ref12.onTransmuxerLog;\n var activeXhrs = [];\n var finishProcessingFn = waitForCompletion({\n activeXhrs: activeXhrs,\n decryptionWorker: decryptionWorker,\n trackInfoFn: trackInfoFn,\n timingInfoFn: timingInfoFn,\n videoSegmentTimingInfoFn: videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn: audioSegmentTimingInfoFn,\n id3Fn: id3Fn,\n captionsFn: captionsFn,\n isEndOfTimeline: isEndOfTimeline,\n endedTimelineFn: endedTimelineFn,\n dataFn: dataFn,\n doneFn: doneFn,\n onTransmuxerLog: onTransmuxerLog\n }); // optionally, request the decryption key\n\n if (segment.key && !segment.key.bytes) {\n var objects = [segment.key];\n\n if (segment.map && !segment.map.bytes && segment.map.key && segment.map.key.resolvedUri === segment.key.resolvedUri) {\n objects.push(segment.map.key);\n }\n\n var keyRequestOptions = videojs.mergeOptions(xhrOptions, {\n uri: segment.key.resolvedUri,\n responseType: 'arraybuffer'\n });\n var keyRequestCallback = handleKeyResponse(segment, objects, finishProcessingFn);\n var keyXhr = xhr(keyRequestOptions, keyRequestCallback);\n activeXhrs.push(keyXhr);\n } // optionally, request the associated media init segment\n\n\n if (segment.map && !segment.map.bytes) {\n var differentMapKey = segment.map.key && (!segment.key || segment.key.resolvedUri !== segment.map.key.resolvedUri);\n\n if (differentMapKey) {\n var mapKeyRequestOptions = videojs.mergeOptions(xhrOptions, {\n uri: segment.map.key.resolvedUri,\n responseType: 'arraybuffer'\n });\n var mapKeyRequestCallback = handleKeyResponse(segment, [segment.map.key], finishProcessingFn);\n var mapKeyXhr = xhr(mapKeyRequestOptions, mapKeyRequestCallback);\n activeXhrs.push(mapKeyXhr);\n }\n\n var initSegmentOptions = videojs.mergeOptions(xhrOptions, {\n uri: segment.map.resolvedUri,\n responseType: 'arraybuffer',\n headers: segmentXhrHeaders(segment.map)\n });\n var initSegmentRequestCallback = handleInitSegmentResponse({\n segment: segment,\n finishProcessingFn: finishProcessingFn\n });\n var initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);\n activeXhrs.push(initSegmentXhr);\n }\n\n var segmentRequestOptions = videojs.mergeOptions(xhrOptions, {\n uri: segment.part && segment.part.resolvedUri || segment.resolvedUri,\n responseType: 'arraybuffer',\n headers: segmentXhrHeaders(segment)\n });\n var segmentRequestCallback = handleSegmentResponse({\n segment: segment,\n finishProcessingFn: finishProcessingFn,\n responseType: segmentRequestOptions.responseType\n });\n var segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);\n segmentXhr.addEventListener('progress', handleProgress({\n segment: segment,\n progressFn: progressFn,\n trackInfoFn: trackInfoFn,\n timingInfoFn: timingInfoFn,\n videoSegmentTimingInfoFn: videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn: audioSegmentTimingInfoFn,\n id3Fn: id3Fn,\n captionsFn: captionsFn,\n isEndOfTimeline: isEndOfTimeline,\n endedTimelineFn: endedTimelineFn,\n dataFn: dataFn\n }));\n activeXhrs.push(segmentXhr); // since all parts of the request must be considered, but should not make callbacks\n // multiple times, provide a shared state object\n\n var loadendState = {};\n activeXhrs.forEach(function (activeXhr) {\n activeXhr.addEventListener('loadend', handleLoadEnd({\n loadendState: loadendState,\n abortFn: abortFn\n }));\n });\n return function () {\n return abortAll(activeXhrs);\n };\n};\n/**\n * @file - codecs.js - Handles tasks regarding codec strings such as translating them to\n * codec strings, or translating codec strings into objects that can be examined.\n */\n\n\nvar logFn$1 = logger('CodecUtils');\n/**\n * Returns a set of codec strings parsed from the playlist or the default\n * codec strings if no codecs were specified in the playlist\n *\n * @param {Playlist} media the current media playlist\n * @return {Object} an object with the video and audio codecs\n */\n\nvar getCodecs = function getCodecs(media) {\n // if the codecs were explicitly specified, use them instead of the\n // defaults\n var mediaAttributes = media.attributes || {};\n\n if (mediaAttributes.CODECS) {\n return parseCodecs(mediaAttributes.CODECS);\n }\n};\n\nvar isMaat = function isMaat(master, media) {\n var mediaAttributes = media.attributes || {};\n return master && master.mediaGroups && master.mediaGroups.AUDIO && mediaAttributes.AUDIO && master.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n};\n\nvar isMuxed = function isMuxed(master, media) {\n if (!isMaat(master, media)) {\n return true;\n }\n\n var mediaAttributes = media.attributes || {};\n var audioGroup = master.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n\n for (var groupId in audioGroup) {\n // If an audio group has a URI (the case for HLS, as HLS will use external playlists),\n // or there are listed playlists (the case for DASH, as the manifest will have already\n // provided all of the details necessary to generate the audio playlist, as opposed to\n // HLS' externally requested playlists), then the content is demuxed.\n if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {\n return true;\n }\n }\n\n return false;\n};\n\nvar unwrapCodecList = function unwrapCodecList(codecList) {\n var codecs = {};\n codecList.forEach(function (_ref) {\n var mediaType = _ref.mediaType,\n type = _ref.type,\n details = _ref.details;\n codecs[mediaType] = codecs[mediaType] || [];\n codecs[mediaType].push(translateLegacyCodec(\"\" + type + details));\n });\n Object.keys(codecs).forEach(function (mediaType) {\n if (codecs[mediaType].length > 1) {\n logFn$1(\"multiple \" + mediaType + \" codecs found as attributes: \" + codecs[mediaType].join(', ') + \". Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.\");\n codecs[mediaType] = null;\n return;\n }\n\n codecs[mediaType] = codecs[mediaType][0];\n });\n return codecs;\n};\n\nvar codecCount = function codecCount(codecObj) {\n var count = 0;\n\n if (codecObj.audio) {\n count++;\n }\n\n if (codecObj.video) {\n count++;\n }\n\n return count;\n};\n/**\n * Calculates the codec strings for a working configuration of\n * SourceBuffers to play variant streams in a master playlist. If\n * there is no possible working configuration, an empty object will be\n * returned.\n *\n * @param master {Object} the m3u8 object for the master playlist\n * @param media {Object} the m3u8 object for the variant playlist\n * @return {Object} the codec strings.\n *\n * @private\n */\n\n\nvar codecsForPlaylist = function codecsForPlaylist(master, media) {\n var mediaAttributes = media.attributes || {};\n var codecInfo = unwrapCodecList(getCodecs(media) || []); // HLS with multiple-audio tracks must always get an audio codec.\n // Put another way, there is no way to have a video-only multiple-audio HLS!\n\n if (isMaat(master, media) && !codecInfo.audio) {\n if (!isMuxed(master, media)) {\n // It is possible for codecs to be specified on the audio media group playlist but\n // not on the rendition playlist. This is mostly the case for DASH, where audio and\n // video are always separate (and separately specified).\n var defaultCodecs = unwrapCodecList(codecsFromDefault(master, mediaAttributes.AUDIO) || []);\n\n if (defaultCodecs.audio) {\n codecInfo.audio = defaultCodecs.audio;\n }\n }\n }\n\n return codecInfo;\n};\n\nvar logFn = logger('PlaylistSelector');\n\nvar representationToString = function representationToString(representation) {\n if (!representation || !representation.playlist) {\n return;\n }\n\n var playlist = representation.playlist;\n return JSON.stringify({\n id: playlist.id,\n bandwidth: representation.bandwidth,\n width: representation.width,\n height: representation.height,\n codecs: playlist.attributes && playlist.attributes.CODECS || ''\n });\n}; // Utilities\n\n/**\n * Returns the CSS value for the specified property on an element\n * using `getComputedStyle`. Firefox has a long-standing issue where\n * getComputedStyle() may return null when running in an iframe with\n * `display: none`.\n *\n * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n * @param {HTMLElement} el the htmlelement to work on\n * @param {string} the proprety to get the style for\n */\n\n\nvar safeGetComputedStyle = function safeGetComputedStyle(el, property) {\n if (!el) {\n return '';\n }\n\n var result = window$1.getComputedStyle(el);\n\n if (!result) {\n return '';\n }\n\n return result[property];\n};\n/**\n * Resuable stable sort function\n *\n * @param {Playlists} array\n * @param {Function} sortFn Different comparators\n * @function stableSort\n */\n\n\nvar stableSort = function stableSort(array, sortFn) {\n var newArray = array.slice();\n array.sort(function (left, right) {\n var cmp = sortFn(left, right);\n\n if (cmp === 0) {\n return newArray.indexOf(left) - newArray.indexOf(right);\n }\n\n return cmp;\n });\n};\n/**\n * A comparator function to sort two playlist object by bandwidth.\n *\n * @param {Object} left a media playlist object\n * @param {Object} right a media playlist object\n * @return {number} Greater than zero if the bandwidth attribute of\n * left is greater than the corresponding attribute of right. Less\n * than zero if the bandwidth of right is greater than left and\n * exactly zero if the two are equal.\n */\n\n\nvar comparePlaylistBandwidth = function comparePlaylistBandwidth(left, right) {\n var leftBandwidth;\n var rightBandwidth;\n\n if (left.attributes.BANDWIDTH) {\n leftBandwidth = left.attributes.BANDWIDTH;\n }\n\n leftBandwidth = leftBandwidth || window$1.Number.MAX_VALUE;\n\n if (right.attributes.BANDWIDTH) {\n rightBandwidth = right.attributes.BANDWIDTH;\n }\n\n rightBandwidth = rightBandwidth || window$1.Number.MAX_VALUE;\n return leftBandwidth - rightBandwidth;\n};\n/**\n * A comparator function to sort two playlist object by resolution (width).\n *\n * @param {Object} left a media playlist object\n * @param {Object} right a media playlist object\n * @return {number} Greater than zero if the resolution.width attribute of\n * left is greater than the corresponding attribute of right. Less\n * than zero if the resolution.width of right is greater than left and\n * exactly zero if the two are equal.\n */\n\n\nvar comparePlaylistResolution = function comparePlaylistResolution(left, right) {\n var leftWidth;\n var rightWidth;\n\n if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {\n leftWidth = left.attributes.RESOLUTION.width;\n }\n\n leftWidth = leftWidth || window$1.Number.MAX_VALUE;\n\n if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {\n rightWidth = right.attributes.RESOLUTION.width;\n }\n\n rightWidth = rightWidth || window$1.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions\n // have the same media dimensions/ resolution\n\n if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {\n return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;\n }\n\n return leftWidth - rightWidth;\n};\n/**\n * Chooses the appropriate media playlist based on bandwidth and player size\n *\n * @param {Object} master\n * Object representation of the master manifest\n * @param {number} playerBandwidth\n * Current calculated bandwidth of the player\n * @param {number} playerWidth\n * Current width of the player element (should account for the device pixel ratio)\n * @param {number} playerHeight\n * Current height of the player element (should account for the device pixel ratio)\n * @param {boolean} limitRenditionByPlayerDimensions\n * True if the player width and height should be used during the selection, false otherwise\n * @param {Object} masterPlaylistController\n * the current masterPlaylistController object\n * @return {Playlist} the highest bitrate playlist less than the\n * currently detected bandwidth, accounting for some amount of\n * bandwidth variance\n */\n\n\nvar simpleSelector = function simpleSelector(master, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions, masterPlaylistController) {\n // If we end up getting called before `master` is available, exit early\n if (!master) {\n return;\n }\n\n var options = {\n bandwidth: playerBandwidth,\n width: playerWidth,\n height: playerHeight,\n limitRenditionByPlayerDimensions: limitRenditionByPlayerDimensions\n };\n var playlists = master.playlists; // if playlist is audio only, select between currently active audio group playlists.\n\n if (Playlist.isAudioOnly(master)) {\n playlists = masterPlaylistController.getAudioTrackPlaylists_(); // add audioOnly to options so that we log audioOnly: true\n // at the buttom of this function for debugging.\n\n options.audioOnly = true;\n } // convert the playlists to an intermediary representation to make comparisons easier\n\n\n var sortedPlaylistReps = playlists.map(function (playlist) {\n var bandwidth;\n var width = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;\n var height = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;\n bandwidth = playlist.attributes && playlist.attributes.BANDWIDTH;\n bandwidth = bandwidth || window$1.Number.MAX_VALUE;\n return {\n bandwidth: bandwidth,\n width: width,\n height: height,\n playlist: playlist\n };\n });\n stableSort(sortedPlaylistReps, function (left, right) {\n return left.bandwidth - right.bandwidth;\n }); // filter out any playlists that have been excluded due to\n // incompatible configurations\n\n sortedPlaylistReps = sortedPlaylistReps.filter(function (rep) {\n return !Playlist.isIncompatible(rep.playlist);\n }); // filter out any playlists that have been disabled manually through the representations\n // api or blacklisted temporarily due to playback errors.\n\n var enabledPlaylistReps = sortedPlaylistReps.filter(function (rep) {\n return Playlist.isEnabled(rep.playlist);\n });\n\n if (!enabledPlaylistReps.length) {\n // if there are no enabled playlists, then they have all been blacklisted or disabled\n // by the user through the representations api. In this case, ignore blacklisting and\n // fallback to what the user wants by using playlists the user has not disabled.\n enabledPlaylistReps = sortedPlaylistReps.filter(function (rep) {\n return !Playlist.isDisabled(rep.playlist);\n });\n } // filter out any variant that has greater effective bitrate\n // than the current estimated bandwidth\n\n\n var bandwidthPlaylistReps = enabledPlaylistReps.filter(function (rep) {\n return rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth;\n });\n var highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth\n // and then taking the very first element\n\n var bandwidthBestRep = bandwidthPlaylistReps.filter(function (rep) {\n return rep.bandwidth === highestRemainingBandwidthRep.bandwidth;\n })[0]; // if we're not going to limit renditions by player size, make an early decision.\n\n if (limitRenditionByPlayerDimensions === false) {\n var _chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n\n if (_chosenRep && _chosenRep.playlist) {\n var type = 'sortedPlaylistReps';\n\n if (bandwidthBestRep) {\n type = 'bandwidthBestRep';\n }\n\n if (enabledPlaylistReps[0]) {\n type = 'enabledPlaylistReps';\n }\n\n logFn(\"choosing \" + representationToString(_chosenRep) + \" using \" + type + \" with options\", options);\n return _chosenRep.playlist;\n }\n\n logFn('could not choose a playlist with options', options);\n return null;\n } // filter out playlists without resolution information\n\n\n var haveResolution = bandwidthPlaylistReps.filter(function (rep) {\n return rep.width && rep.height;\n }); // sort variants by resolution\n\n stableSort(haveResolution, function (left, right) {\n return left.width - right.width;\n }); // if we have the exact resolution as the player use it\n\n var resolutionBestRepList = haveResolution.filter(function (rep) {\n return rep.width === playerWidth && rep.height === playerHeight;\n });\n highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution\n\n var resolutionBestRep = resolutionBestRepList.filter(function (rep) {\n return rep.bandwidth === highestRemainingBandwidthRep.bandwidth;\n })[0];\n var resolutionPlusOneList;\n var resolutionPlusOneSmallest;\n var resolutionPlusOneRep; // find the smallest variant that is larger than the player\n // if there is no match of exact resolution\n\n if (!resolutionBestRep) {\n resolutionPlusOneList = haveResolution.filter(function (rep) {\n return rep.width > playerWidth || rep.height > playerHeight;\n }); // find all the variants have the same smallest resolution\n\n resolutionPlusOneSmallest = resolutionPlusOneList.filter(function (rep) {\n return rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height;\n }); // ensure that we also pick the highest bandwidth variant that\n // is just-larger-than the video player\n\n highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];\n resolutionPlusOneRep = resolutionPlusOneSmallest.filter(function (rep) {\n return rep.bandwidth === highestRemainingBandwidthRep.bandwidth;\n })[0];\n }\n\n var leastPixelDiffRep; // If this selector proves to be better than others,\n // resolutionPlusOneRep and resolutionBestRep and all\n // the code involving them should be removed.\n\n if (masterPlaylistController.experimentalLeastPixelDiffSelector) {\n // find the variant that is closest to the player's pixel size\n var leastPixelDiffList = haveResolution.map(function (rep) {\n rep.pixelDiff = Math.abs(rep.width - playerWidth) + Math.abs(rep.height - playerHeight);\n return rep;\n }); // get the highest bandwidth, closest resolution playlist\n\n stableSort(leastPixelDiffList, function (left, right) {\n // sort by highest bandwidth if pixelDiff is the same\n if (left.pixelDiff === right.pixelDiff) {\n return right.bandwidth - left.bandwidth;\n }\n\n return left.pixelDiff - right.pixelDiff;\n });\n leastPixelDiffRep = leastPixelDiffList[0];\n } // fallback chain of variants\n\n\n var chosenRep = leastPixelDiffRep || resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n\n if (chosenRep && chosenRep.playlist) {\n var _type = 'sortedPlaylistReps';\n\n if (leastPixelDiffRep) {\n _type = 'leastPixelDiffRep';\n } else if (resolutionPlusOneRep) {\n _type = 'resolutionPlusOneRep';\n } else if (resolutionBestRep) {\n _type = 'resolutionBestRep';\n } else if (bandwidthBestRep) {\n _type = 'bandwidthBestRep';\n } else if (enabledPlaylistReps[0]) {\n _type = 'enabledPlaylistReps';\n }\n\n logFn(\"choosing \" + representationToString(chosenRep) + \" using \" + _type + \" with options\", options);\n return chosenRep.playlist;\n }\n\n logFn('could not choose a playlist with options', options);\n return null;\n};\n/**\n * Chooses the appropriate media playlist based on the most recent\n * bandwidth estimate and the player size.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @return {Playlist} the highest bitrate playlist less than the\n * currently detected bandwidth, accounting for some amount of\n * bandwidth variance\n */\n\n\nvar lastBandwidthSelector = function lastBandwidthSelector() {\n var pixelRatio = this.useDevicePixelRatio ? window$1.devicePixelRatio || 1 : 1;\n return simpleSelector(this.playlists.master, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.masterPlaylistController_);\n};\n/**\n * Chooses the appropriate media playlist based on an\n * exponential-weighted moving average of the bandwidth after\n * filtering for player size.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @param {number} decay - a number between 0 and 1. Higher values of\n * this parameter will cause previous bandwidth estimates to lose\n * significance more quickly.\n * @return {Function} a function which can be invoked to create a new\n * playlist selector function.\n * @see https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average\n */\n\n\nvar movingAverageBandwidthSelector = function movingAverageBandwidthSelector(decay) {\n var average = -1;\n var lastSystemBandwidth = -1;\n\n if (decay < 0 || decay > 1) {\n throw new Error('Moving average bandwidth decay must be between 0 and 1.');\n }\n\n return function () {\n var pixelRatio = this.useDevicePixelRatio ? window$1.devicePixelRatio || 1 : 1;\n\n if (average < 0) {\n average = this.systemBandwidth;\n lastSystemBandwidth = this.systemBandwidth;\n } // stop the average value from decaying for every 250ms\n // when the systemBandwidth is constant\n // and\n // stop average from setting to a very low value when the\n // systemBandwidth becomes 0 in case of chunk cancellation\n\n\n if (this.systemBandwidth > 0 && this.systemBandwidth !== lastSystemBandwidth) {\n average = decay * this.systemBandwidth + (1 - decay) * average;\n lastSystemBandwidth = this.systemBandwidth;\n }\n\n return simpleSelector(this.playlists.master, average, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.masterPlaylistController_);\n };\n};\n/**\n * Chooses the appropriate media playlist based on the potential to rebuffer\n *\n * @param {Object} settings\n * Object of information required to use this selector\n * @param {Object} settings.master\n * Object representation of the master manifest\n * @param {number} settings.currentTime\n * The current time of the player\n * @param {number} settings.bandwidth\n * Current measured bandwidth\n * @param {number} settings.duration\n * Duration of the media\n * @param {number} settings.segmentDuration\n * Segment duration to be used in round trip time calculations\n * @param {number} settings.timeUntilRebuffer\n * Time left in seconds until the player has to rebuffer\n * @param {number} settings.currentTimeline\n * The current timeline segments are being loaded from\n * @param {SyncController} settings.syncController\n * SyncController for determining if we have a sync point for a given playlist\n * @return {Object|null}\n * {Object} return.playlist\n * The highest bandwidth playlist with the least amount of rebuffering\n * {Number} return.rebufferingImpact\n * The amount of time in seconds switching to this playlist will rebuffer. A\n * negative value means that switching will cause zero rebuffering.\n */\n\n\nvar minRebufferMaxBandwidthSelector = function minRebufferMaxBandwidthSelector(settings) {\n var master = settings.master,\n currentTime = settings.currentTime,\n bandwidth = settings.bandwidth,\n duration = settings.duration,\n segmentDuration = settings.segmentDuration,\n timeUntilRebuffer = settings.timeUntilRebuffer,\n currentTimeline = settings.currentTimeline,\n syncController = settings.syncController; // filter out any playlists that have been excluded due to\n // incompatible configurations\n\n var compatiblePlaylists = master.playlists.filter(function (playlist) {\n return !Playlist.isIncompatible(playlist);\n }); // filter out any playlists that have been disabled manually through the representations\n // api or blacklisted temporarily due to playback errors.\n\n var enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);\n\n if (!enabledPlaylists.length) {\n // if there are no enabled playlists, then they have all been blacklisted or disabled\n // by the user through the representations api. In this case, ignore blacklisting and\n // fallback to what the user wants by using playlists the user has not disabled.\n enabledPlaylists = compatiblePlaylists.filter(function (playlist) {\n return !Playlist.isDisabled(playlist);\n });\n }\n\n var bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));\n var rebufferingEstimates = bandwidthPlaylists.map(function (playlist) {\n var syncPoint = syncController.getSyncPoint(playlist, duration, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a\n // sync request first. This will double the request time\n\n var numRequests = syncPoint ? 1 : 2;\n var requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);\n var rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;\n return {\n playlist: playlist,\n rebufferingImpact: rebufferingImpact\n };\n });\n var noRebufferingPlaylists = rebufferingEstimates.filter(function (estimate) {\n return estimate.rebufferingImpact <= 0;\n }); // Sort by bandwidth DESC\n\n stableSort(noRebufferingPlaylists, function (a, b) {\n return comparePlaylistBandwidth(b.playlist, a.playlist);\n });\n\n if (noRebufferingPlaylists.length) {\n return noRebufferingPlaylists[0];\n }\n\n stableSort(rebufferingEstimates, function (a, b) {\n return a.rebufferingImpact - b.rebufferingImpact;\n });\n return rebufferingEstimates[0] || null;\n};\n/**\n * Chooses the appropriate media playlist, which in this case is the lowest bitrate\n * one with video. If no renditions with video exist, return the lowest audio rendition.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @return {Object|null}\n * {Object} return.playlist\n * The lowest bitrate playlist that contains a video codec. If no such rendition\n * exists pick the lowest audio rendition.\n */\n\n\nvar lowestBitrateCompatibleVariantSelector = function lowestBitrateCompatibleVariantSelector() {\n var _this = this; // filter out any playlists that have been excluded due to\n // incompatible configurations or playback errors\n\n\n var playlists = this.playlists.master.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate\n\n stableSort(playlists, function (a, b) {\n return comparePlaylistBandwidth(a, b);\n }); // Parse and assume that playlists with no video codec have no video\n // (this is not necessarily true, although it is generally true).\n //\n // If an entire manifest has no valid videos everything will get filtered\n // out.\n\n var playlistsWithVideo = playlists.filter(function (playlist) {\n return !!codecsForPlaylist(_this.playlists.master, playlist).video;\n });\n return playlistsWithVideo[0] || null;\n};\n/**\n * Combine all segments into a single Uint8Array\n *\n * @param {Object} segmentObj\n * @return {Uint8Array} concatenated bytes\n * @private\n */\n\n\nvar concatSegments = function concatSegments(segmentObj) {\n var offset = 0;\n var tempBuffer;\n\n if (segmentObj.bytes) {\n tempBuffer = new Uint8Array(segmentObj.bytes); // combine the individual segments into one large typed-array\n\n segmentObj.segments.forEach(function (segment) {\n tempBuffer.set(segment, offset);\n offset += segment.byteLength;\n });\n }\n\n return tempBuffer;\n};\n/**\n * @file text-tracks.js\n */\n\n/**\n * Create captions text tracks on video.js if they do not exist\n *\n * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n * @param {Object} tech the video.js tech\n * @param {Object} captionStream the caption stream to create\n * @private\n */\n\n\nvar createCaptionsTrackIfNotExists = function createCaptionsTrackIfNotExists(inbandTextTracks, tech, captionStream) {\n if (!inbandTextTracks[captionStream]) {\n tech.trigger({\n type: 'usage',\n name: 'vhs-608'\n });\n tech.trigger({\n type: 'usage',\n name: 'hls-608'\n });\n var instreamId = captionStream; // we need to translate SERVICEn for 708 to how mux.js currently labels them\n\n if (/^cc708_/.test(captionStream)) {\n instreamId = 'SERVICE' + captionStream.split('_')[1];\n }\n\n var track = tech.textTracks().getTrackById(instreamId);\n\n if (track) {\n // Resuse an existing track with a CC# id because this was\n // very likely created by videojs-contrib-hls from information\n // in the m3u8 for us to use\n inbandTextTracks[captionStream] = track;\n } else {\n // This section gets called when we have caption services that aren't specified in the manifest.\n // Manifest level caption services are handled in media-groups.js under CLOSED-CAPTIONS.\n var captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n var label = captionStream;\n var language = captionStream;\n var def = false;\n var captionService = captionServices[instreamId];\n\n if (captionService) {\n label = captionService.label;\n language = captionService.language;\n def = captionService[\"default\"];\n } // Otherwise, create a track with the default `CC#` label and\n // without a language\n\n\n inbandTextTracks[captionStream] = tech.addRemoteTextTrack({\n kind: 'captions',\n id: instreamId,\n // TODO: investigate why this doesn't seem to turn the caption on by default\n \"default\": def,\n label: label,\n language: language\n }, false).track;\n }\n }\n};\n/**\n * Add caption text track data to a source handler given an array of captions\n *\n * @param {Object}\n * @param {Object} inbandTextTracks the inband text tracks\n * @param {number} timestampOffset the timestamp offset of the source buffer\n * @param {Array} captionArray an array of caption data\n * @private\n */\n\n\nvar addCaptionData = function addCaptionData(_ref) {\n var inbandTextTracks = _ref.inbandTextTracks,\n captionArray = _ref.captionArray,\n timestampOffset = _ref.timestampOffset;\n\n if (!captionArray) {\n return;\n }\n\n var Cue = window$1.WebKitDataCue || window$1.VTTCue;\n captionArray.forEach(function (caption) {\n var track = caption.stream;\n inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));\n });\n};\n/**\n * Define properties on a cue for backwards compatability,\n * but warn the user that the way that they are using it\n * is depricated and will be removed at a later date.\n *\n * @param {Cue} cue the cue to add the properties on\n * @private\n */\n\n\nvar deprecateOldCue = function deprecateOldCue(cue) {\n Object.defineProperties(cue.frame, {\n id: {\n get: function get() {\n videojs.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');\n return cue.value.key;\n }\n },\n value: {\n get: function get() {\n videojs.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');\n return cue.value.data;\n }\n },\n privateData: {\n get: function get() {\n videojs.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');\n return cue.value.data;\n }\n }\n });\n};\n/**\n * Add metadata text track data to a source handler given an array of metadata\n *\n * @param {Object}\n * @param {Object} inbandTextTracks the inband text tracks\n * @param {Array} metadataArray an array of meta data\n * @param {number} timestampOffset the timestamp offset of the source buffer\n * @param {number} videoDuration the duration of the video\n * @private\n */\n\n\nvar addMetadata = function addMetadata(_ref2) {\n var inbandTextTracks = _ref2.inbandTextTracks,\n metadataArray = _ref2.metadataArray,\n timestampOffset = _ref2.timestampOffset,\n videoDuration = _ref2.videoDuration;\n\n if (!metadataArray) {\n return;\n }\n\n var Cue = window$1.WebKitDataCue || window$1.VTTCue;\n var metadataTrack = inbandTextTracks.metadataTrack_;\n\n if (!metadataTrack) {\n return;\n }\n\n metadataArray.forEach(function (metadata) {\n var time = metadata.cueTime + timestampOffset; // if time isn't a finite number between 0 and Infinity, like NaN,\n // ignore this bit of metadata.\n // This likely occurs when you have an non-timed ID3 tag like TIT2,\n // which is the \"Title/Songname/Content description\" frame\n\n if (typeof time !== 'number' || window$1.isNaN(time) || time < 0 || !(time < Infinity)) {\n return;\n }\n\n metadata.frames.forEach(function (frame) {\n var cue = new Cue(time, time, frame.value || frame.url || frame.data || '');\n cue.frame = frame;\n cue.value = frame;\n deprecateOldCue(cue);\n metadataTrack.addCue(cue);\n });\n });\n\n if (!metadataTrack.cues || !metadataTrack.cues.length) {\n return;\n } // Updating the metadeta cues so that\n // the endTime of each cue is the startTime of the next cue\n // the endTime of last cue is the duration of the video\n\n\n var cues = metadataTrack.cues;\n var cuesArray = []; // Create a copy of the TextTrackCueList...\n // ...disregarding cues with a falsey value\n\n for (var i = 0; i < cues.length; i++) {\n if (cues[i]) {\n cuesArray.push(cues[i]);\n }\n } // Group cues by their startTime value\n\n\n var cuesGroupedByStartTime = cuesArray.reduce(function (obj, cue) {\n var timeSlot = obj[cue.startTime] || [];\n timeSlot.push(cue);\n obj[cue.startTime] = timeSlot;\n return obj;\n }, {}); // Sort startTimes by ascending order\n\n var sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort(function (a, b) {\n return Number(a) - Number(b);\n }); // Map each cue group's endTime to the next group's startTime\n\n sortedStartTimes.forEach(function (startTime, idx) {\n var cueGroup = cuesGroupedByStartTime[startTime];\n var nextTime = Number(sortedStartTimes[idx + 1]) || videoDuration; // Map each cue's endTime the next group's startTime\n\n cueGroup.forEach(function (cue) {\n cue.endTime = nextTime;\n });\n });\n};\n/**\n * Create metadata text track on video.js if it does not exist\n *\n * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n * @param {string} dispatchType the inband metadata track dispatch type\n * @param {Object} tech the video.js tech\n * @private\n */\n\n\nvar createMetadataTrackIfNotExists = function createMetadataTrackIfNotExists(inbandTextTracks, dispatchType, tech) {\n if (inbandTextTracks.metadataTrack_) {\n return;\n }\n\n inbandTextTracks.metadataTrack_ = tech.addRemoteTextTrack({\n kind: 'metadata',\n label: 'Timed Metadata'\n }, false).track;\n inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;\n};\n/**\n * Remove cues from a track on video.js.\n *\n * @param {Double} start start of where we should remove the cue\n * @param {Double} end end of where the we should remove the cue\n * @param {Object} track the text track to remove the cues from\n * @private\n */\n\n\nvar removeCuesFromTrack = function removeCuesFromTrack(start, end, track) {\n var i;\n var cue;\n\n if (!track) {\n return;\n }\n\n if (!track.cues) {\n return;\n }\n\n i = track.cues.length;\n\n while (i--) {\n cue = track.cues[i]; // Remove any cue within the provided start and end time\n\n if (cue.startTime >= start && cue.endTime <= end) {\n track.removeCue(cue);\n }\n }\n};\n/**\n * Remove duplicate cues from a track on video.js (a cue is considered a\n * duplicate if it has the same time interval and text as another)\n *\n * @param {Object} track the text track to remove the duplicate cues from\n * @private\n */\n\n\nvar removeDuplicateCuesFromTrack = function removeDuplicateCuesFromTrack(track) {\n var cues = track.cues;\n\n if (!cues) {\n return;\n }\n\n for (var i = 0; i < cues.length; i++) {\n var duplicates = [];\n var occurrences = 0;\n\n for (var j = 0; j < cues.length; j++) {\n if (cues[i].startTime === cues[j].startTime && cues[i].endTime === cues[j].endTime && cues[i].text === cues[j].text) {\n occurrences++;\n\n if (occurrences > 1) {\n duplicates.push(cues[j]);\n }\n }\n }\n\n if (duplicates.length) {\n duplicates.forEach(function (dupe) {\n return track.removeCue(dupe);\n });\n }\n }\n};\n/**\n * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in\n * front of current time.\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {number} currentTime\n * The current time\n * @param {Double} mapping\n * Offset to map display time to stream presentation time\n * @return {Array}\n * List of gops considered safe to append over\n */\n\n\nvar gopsSafeToAlignWith = function gopsSafeToAlignWith(buffer, currentTime, mapping) {\n if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {\n return [];\n } // pts value for current time + 3 seconds to give a bit more wiggle room\n\n\n var currentTimePts = Math.ceil((currentTime - mapping + 3) * ONE_SECOND_IN_TS);\n var i;\n\n for (i = 0; i < buffer.length; i++) {\n if (buffer[i].pts > currentTimePts) {\n break;\n }\n }\n\n return buffer.slice(i);\n};\n/**\n * Appends gop information (timing and byteLength) received by the transmuxer for the\n * gops appended in the last call to appendBuffer\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {Array} gops\n * List of new gop information\n * @param {boolean} replace\n * If true, replace the buffer with the new gop information. If false, append the\n * new gop information to the buffer in the right location of time.\n * @return {Array}\n * Updated list of gop information\n */\n\n\nvar updateGopBuffer = function updateGopBuffer(buffer, gops, replace) {\n if (!gops.length) {\n return buffer;\n }\n\n if (replace) {\n // If we are in safe append mode, then completely overwrite the gop buffer\n // with the most recent appeneded data. This will make sure that when appending\n // future segments, we only try to align with gops that are both ahead of current\n // time and in the last segment appended.\n return gops.slice();\n }\n\n var start = gops[0].pts;\n var i = 0;\n\n for (i; i < buffer.length; i++) {\n if (buffer[i].pts >= start) {\n break;\n }\n }\n\n return buffer.slice(0, i).concat(gops);\n};\n/**\n * Removes gop information in buffer that overlaps with provided start and end\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {Double} start\n * position to start the remove at\n * @param {Double} end\n * position to end the remove at\n * @param {Double} mapping\n * Offset to map display time to stream presentation time\n */\n\n\nvar removeGopBuffer = function removeGopBuffer(buffer, start, end, mapping) {\n var startPts = Math.ceil((start - mapping) * ONE_SECOND_IN_TS);\n var endPts = Math.ceil((end - mapping) * ONE_SECOND_IN_TS);\n var updatedBuffer = buffer.slice();\n var i = buffer.length;\n\n while (i--) {\n if (buffer[i].pts <= endPts) {\n break;\n }\n }\n\n if (i === -1) {\n // no removal because end of remove range is before start of buffer\n return updatedBuffer;\n }\n\n var j = i + 1;\n\n while (j--) {\n if (buffer[j].pts <= startPts) {\n break;\n }\n } // clamp remove range start to 0 index\n\n\n j = Math.max(j, 0);\n updatedBuffer.splice(j, i - j + 1);\n return updatedBuffer;\n};\n\nvar shallowEqual = function shallowEqual(a, b) {\n // if both are undefined\n // or one or the other is undefined\n // they are not equal\n if (!a && !b || !a && b || a && !b) {\n return false;\n } // they are the same object and thus, equal\n\n\n if (a === b) {\n return true;\n } // sort keys so we can make sure they have\n // all the same keys later.\n\n\n var akeys = Object.keys(a).sort();\n var bkeys = Object.keys(b).sort(); // different number of keys, not equal\n\n if (akeys.length !== bkeys.length) {\n return false;\n }\n\n for (var i = 0; i < akeys.length; i++) {\n var key = akeys[i]; // different sorted keys, not equal\n\n if (key !== bkeys[i]) {\n return false;\n } // different values, not equal\n\n\n if (a[key] !== b[key]) {\n return false;\n }\n }\n\n return true;\n}; // https://www.w3.org/TR/WebIDL-1/#quotaexceedederror\n\n\nvar QUOTA_EXCEEDED_ERR = 22;\n/**\n * The segment loader has no recourse except to fetch a segment in the\n * current playlist and use the internal timestamps in that segment to\n * generate a syncPoint. This function returns a good candidate index\n * for that process.\n *\n * @param {Array} segments - the segments array from a playlist.\n * @return {number} An index of a segment from the playlist to load\n */\n\nvar getSyncSegmentCandidate = function getSyncSegmentCandidate(currentTimeline, segments, targetTime) {\n segments = segments || [];\n var timelineSegments = [];\n var time = 0;\n\n for (var i = 0; i < segments.length; i++) {\n var segment = segments[i];\n\n if (currentTimeline === segment.timeline) {\n timelineSegments.push(i);\n time += segment.duration;\n\n if (time > targetTime) {\n return i;\n }\n }\n }\n\n if (timelineSegments.length === 0) {\n return 0;\n } // default to the last timeline segment\n\n\n return timelineSegments[timelineSegments.length - 1];\n}; // In the event of a quota exceeded error, keep at least one second of back buffer. This\n// number was arbitrarily chosen and may be updated in the future, but seemed reasonable\n// as a start to prevent any potential issues with removing content too close to the\n// playhead.\n\n\nvar MIN_BACK_BUFFER = 1; // in ms\n\nvar CHECK_BUFFER_DELAY = 500;\n\nvar finite = function finite(num) {\n return typeof num === 'number' && isFinite(num);\n}; // With most content hovering around 30fps, if a segment has a duration less than a half\n// frame at 30fps or one frame at 60fps, the bandwidth and throughput calculations will\n// not accurately reflect the rest of the content.\n\n\nvar MIN_SEGMENT_DURATION_TO_SAVE_STATS = 1 / 60;\n\nvar illegalMediaSwitch = function illegalMediaSwitch(loaderType, startingMedia, trackInfo) {\n // Although these checks should most likely cover non 'main' types, for now it narrows\n // the scope of our checks.\n if (loaderType !== 'main' || !startingMedia || !trackInfo) {\n return null;\n }\n\n if (!trackInfo.hasAudio && !trackInfo.hasVideo) {\n return 'Neither audio nor video found in segment.';\n }\n\n if (startingMedia.hasVideo && !trackInfo.hasVideo) {\n return 'Only audio found in segment when we expected video.' + ' We can\\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';\n }\n\n if (!startingMedia.hasVideo && trackInfo.hasVideo) {\n return 'Video found in segment when we expected only audio.' + ' We can\\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';\n }\n\n return null;\n};\n/**\n * Calculates a time value that is safe to remove from the back buffer without interrupting\n * playback.\n *\n * @param {TimeRange} seekable\n * The current seekable range\n * @param {number} currentTime\n * The current time of the player\n * @param {number} targetDuration\n * The target duration of the current playlist\n * @return {number}\n * Time that is safe to remove from the back buffer without interrupting playback\n */\n\n\nvar safeBackBufferTrimTime = function safeBackBufferTrimTime(seekable, currentTime, targetDuration) {\n // 30 seconds before the playhead provides a safe default for trimming.\n //\n // Choosing a reasonable default is particularly important for high bitrate content and\n // VOD videos/live streams with large windows, as the buffer may end up overfilled and\n // throw an APPEND_BUFFER_ERR.\n var trimTime = currentTime - Config.BACK_BUFFER_LENGTH;\n\n if (seekable.length) {\n // Some live playlists may have a shorter window of content than the full allowed back\n // buffer. For these playlists, don't save content that's no longer within the window.\n trimTime = Math.max(trimTime, seekable.start(0));\n } // Don't remove within target duration of the current time to avoid the possibility of\n // removing the GOP currently being played, as removing it can cause playback stalls.\n\n\n var maxTrimTime = currentTime - targetDuration;\n return Math.min(maxTrimTime, trimTime);\n};\n\nvar segmentInfoString = function segmentInfoString(segmentInfo) {\n var startOfSegment = segmentInfo.startOfSegment,\n duration = segmentInfo.duration,\n segment = segmentInfo.segment,\n part = segmentInfo.part,\n _segmentInfo$playlist = segmentInfo.playlist,\n seq = _segmentInfo$playlist.mediaSequence,\n id = _segmentInfo$playlist.id,\n _segmentInfo$playlist2 = _segmentInfo$playlist.segments,\n segments = _segmentInfo$playlist2 === void 0 ? [] : _segmentInfo$playlist2,\n index = segmentInfo.mediaIndex,\n partIndex = segmentInfo.partIndex,\n timeline = segmentInfo.timeline;\n var segmentLen = segments.length - 1;\n var selection = 'mediaIndex/partIndex increment';\n\n if (segmentInfo.getMediaInfoForTime) {\n selection = \"getMediaInfoForTime (\" + segmentInfo.getMediaInfoForTime + \")\";\n } else if (segmentInfo.isSyncRequest) {\n selection = 'getSyncSegmentCandidate (isSyncRequest)';\n }\n\n if (segmentInfo.independent) {\n selection += \" with independent \" + segmentInfo.independent;\n }\n\n var hasPartIndex = typeof partIndex === 'number';\n var name = segmentInfo.segment.uri ? 'segment' : 'pre-segment';\n var zeroBasedPartCount = hasPartIndex ? getKnownPartCount({\n preloadSegment: segment\n }) - 1 : 0;\n return name + \" [\" + (seq + index) + \"/\" + (seq + segmentLen) + \"]\" + (hasPartIndex ? \" part [\" + partIndex + \"/\" + zeroBasedPartCount + \"]\" : '') + (\" segment start/end [\" + segment.start + \" => \" + segment.end + \"]\") + (hasPartIndex ? \" part start/end [\" + part.start + \" => \" + part.end + \"]\" : '') + (\" startOfSegment [\" + startOfSegment + \"]\") + (\" duration [\" + duration + \"]\") + (\" timeline [\" + timeline + \"]\") + (\" selected by [\" + selection + \"]\") + (\" playlist [\" + id + \"]\");\n};\n\nvar timingInfoPropertyForMedia = function timingInfoPropertyForMedia(mediaType) {\n return mediaType + \"TimingInfo\";\n};\n/**\n * Returns the timestamp offset to use for the segment.\n *\n * @param {number} segmentTimeline\n * The timeline of the segment\n * @param {number} currentTimeline\n * The timeline currently being followed by the loader\n * @param {number} startOfSegment\n * The estimated segment start\n * @param {TimeRange[]} buffered\n * The loader's buffer\n * @param {boolean} overrideCheck\n * If true, no checks are made to see if the timestamp offset value should be set,\n * but sets it directly to a value.\n *\n * @return {number|null}\n * Either a number representing a new timestamp offset, or null if the segment is\n * part of the same timeline\n */\n\n\nvar timestampOffsetForSegment = function timestampOffsetForSegment(_ref) {\n var segmentTimeline = _ref.segmentTimeline,\n currentTimeline = _ref.currentTimeline,\n startOfSegment = _ref.startOfSegment,\n buffered = _ref.buffered,\n overrideCheck = _ref.overrideCheck; // Check to see if we are crossing a discontinuity to see if we need to set the\n // timestamp offset on the transmuxer and source buffer.\n //\n // Previously, we changed the timestampOffset if the start of this segment was less than\n // the currently set timestampOffset, but this isn't desirable as it can produce bad\n // behavior, especially around long running live streams.\n\n if (!overrideCheck && segmentTimeline === currentTimeline) {\n return null;\n } // When changing renditions, it's possible to request a segment on an older timeline. For\n // instance, given two renditions with the following:\n //\n // #EXTINF:10\n // segment1\n // #EXT-X-DISCONTINUITY\n // #EXTINF:10\n // segment2\n // #EXTINF:10\n // segment3\n //\n // And the current player state:\n //\n // current time: 8\n // buffer: 0 => 20\n //\n // The next segment on the current rendition would be segment3, filling the buffer from\n // 20s onwards. However, if a rendition switch happens after segment2 was requested,\n // then the next segment to be requested will be segment1 from the new rendition in\n // order to fill time 8 and onwards. Using the buffered end would result in repeated\n // content (since it would position segment1 of the new rendition starting at 20s). This\n // case can be identified when the new segment's timeline is a prior value. Instead of\n // using the buffered end, the startOfSegment can be used, which, hopefully, will be\n // more accurate to the actual start time of the segment.\n\n\n if (segmentTimeline < currentTimeline) {\n return startOfSegment;\n } // segmentInfo.startOfSegment used to be used as the timestamp offset, however, that\n // value uses the end of the last segment if it is available. While this value\n // should often be correct, it's better to rely on the buffered end, as the new\n // content post discontinuity should line up with the buffered end as if it were\n // time 0 for the new content.\n\n\n return buffered.length ? buffered.end(buffered.length - 1) : startOfSegment;\n};\n/**\n * Returns whether or not the loader should wait for a timeline change from the timeline\n * change controller before processing the segment.\n *\n * Primary timing in VHS goes by video. This is different from most media players, as\n * audio is more often used as the primary timing source. For the foreseeable future, VHS\n * will continue to use video as the primary timing source, due to the current logic and\n * expectations built around it.\n\n * Since the timing follows video, in order to maintain sync, the video loader is\n * responsible for setting both audio and video source buffer timestamp offsets.\n *\n * Setting different values for audio and video source buffers could lead to\n * desyncing. The following examples demonstrate some of the situations where this\n * distinction is important. Note that all of these cases involve demuxed content. When\n * content is muxed, the audio and video are packaged together, therefore syncing\n * separate media playlists is not an issue.\n *\n * CASE 1: Audio prepares to load a new timeline before video:\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, the audio loader is preparing to load the 6th segment, the first\n * after a discontinuity, while the video loader is still loading the 5th segment, before\n * the discontinuity.\n *\n * If the audio loader goes ahead and loads and appends the 6th segment before the video\n * loader crosses the discontinuity, then when appended, the 6th audio segment will use\n * the timestamp offset from timeline 0. This will likely lead to desyncing. In addition,\n * the audio loader must provide the audioAppendStart value to trim the content in the\n * transmuxer, and that value relies on the audio timestamp offset. Since the audio\n * timestamp offset is set by the video (main) loader, the audio loader shouldn't load the\n * segment until that value is provided.\n *\n * CASE 2: Video prepares to load a new timeline before audio:\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, the video loader is preparing to load the 6th segment, the first\n * after a discontinuity, while the audio loader is still loading the 5th segment, before\n * the discontinuity.\n *\n * If the video loader goes ahead and loads and appends the 6th segment, then once the\n * segment is loaded and processed, both the video and audio timestamp offsets will be\n * set, since video is used as the primary timing source. This is to ensure content lines\n * up appropriately, as any modifications to the video timing are reflected by audio when\n * the video loader sets the audio and video timestamp offsets to the same value. However,\n * setting the timestamp offset for audio before audio has had a chance to change\n * timelines will likely lead to desyncing, as the audio loader will append segment 5 with\n * a timestamp intended to apply to segments from timeline 1 rather than timeline 0.\n *\n * CASE 3: When seeking, audio prepares to load a new timeline before video\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, both audio and video loaders are loading segments from timeline\n * 0, but imagine that the seek originated from timeline 1.\n *\n * When seeking to a new timeline, the timestamp offset will be set based on the expected\n * segment start of the loaded video segment. In order to maintain sync, the audio loader\n * must wait for the video loader to load its segment and update both the audio and video\n * timestamp offsets before it may load and append its own segment. This is the case\n * whether the seek results in a mismatched segment request (e.g., the audio loader\n * chooses to load segment 3 and the video loader chooses to load segment 4) or the\n * loaders choose to load the same segment index from each playlist, as the segments may\n * not be aligned perfectly, even for matching segment indexes.\n *\n * @param {Object} timelinechangeController\n * @param {number} currentTimeline\n * The timeline currently being followed by the loader\n * @param {number} segmentTimeline\n * The timeline of the segment being loaded\n * @param {('main'|'audio')} loaderType\n * The loader type\n * @param {boolean} audioDisabled\n * Whether the audio is disabled for the loader. This should only be true when the\n * loader may have muxed audio in its segment, but should not append it, e.g., for\n * the main loader when an alternate audio playlist is active.\n *\n * @return {boolean}\n * Whether the loader should wait for a timeline change from the timeline change\n * controller before processing the segment\n */\n\n\nvar shouldWaitForTimelineChange = function shouldWaitForTimelineChange(_ref2) {\n var timelineChangeController = _ref2.timelineChangeController,\n currentTimeline = _ref2.currentTimeline,\n segmentTimeline = _ref2.segmentTimeline,\n loaderType = _ref2.loaderType,\n audioDisabled = _ref2.audioDisabled;\n\n if (currentTimeline === segmentTimeline) {\n return false;\n }\n\n if (loaderType === 'audio') {\n var lastMainTimelineChange = timelineChangeController.lastTimelineChange({\n type: 'main'\n }); // Audio loader should wait if:\n //\n // * main hasn't had a timeline change yet (thus has not loaded its first segment)\n // * main hasn't yet changed to the timeline audio is looking to load\n\n return !lastMainTimelineChange || lastMainTimelineChange.to !== segmentTimeline;\n } // The main loader only needs to wait for timeline changes if there's demuxed audio.\n // Otherwise, there's nothing to wait for, since audio would be muxed into the main\n // loader's segments (or the content is audio/video only and handled by the main\n // loader).\n\n\n if (loaderType === 'main' && audioDisabled) {\n var pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({\n type: 'audio'\n }); // Main loader should wait for the audio loader if audio is not pending a timeline\n // change to the current timeline.\n //\n // Since the main loader is responsible for setting the timestamp offset for both\n // audio and video, the main loader must wait for audio to be about to change to its\n // timeline before setting the offset, otherwise, if audio is behind in loading,\n // segments from the previous timeline would be adjusted by the new timestamp offset.\n //\n // This requirement means that video will not cross a timeline until the audio is\n // about to cross to it, so that way audio and video will always cross the timeline\n // together.\n //\n // In addition to normal timeline changes, these rules also apply to the start of a\n // stream (going from a non-existent timeline, -1, to timeline 0). It's important\n // that these rules apply to the first timeline change because if they did not, it's\n // possible that the main loader will cross two timelines before the audio loader has\n // crossed one. Logic may be implemented to handle the startup as a special case, but\n // it's easier to simply treat all timeline changes the same.\n\n if (pendingAudioTimelineChange && pendingAudioTimelineChange.to === segmentTimeline) {\n return false;\n }\n\n return true;\n }\n\n return false;\n};\n\nvar mediaDuration = function mediaDuration(timingInfos) {\n var maxDuration = 0;\n ['video', 'audio'].forEach(function (type) {\n var typeTimingInfo = timingInfos[type + \"TimingInfo\"];\n\n if (!typeTimingInfo) {\n return;\n }\n\n var start = typeTimingInfo.start,\n end = typeTimingInfo.end;\n var duration;\n\n if (typeof start === 'bigint' || typeof end === 'bigint') {\n duration = window$1.BigInt(end) - window$1.BigInt(start);\n } else if (typeof start === 'number' && typeof end === 'number') {\n duration = end - start;\n }\n\n if (typeof duration !== 'undefined' && duration > maxDuration) {\n maxDuration = duration;\n }\n }); // convert back to a number if it is lower than MAX_SAFE_INTEGER\n // as we only need BigInt when we are above that.\n\n if (typeof maxDuration === 'bigint' && maxDuration < Number.MAX_SAFE_INTEGER) {\n maxDuration = Number(maxDuration);\n }\n\n return maxDuration;\n};\n\nvar segmentTooLong = function segmentTooLong(_ref3) {\n var segmentDuration = _ref3.segmentDuration,\n maxDuration = _ref3.maxDuration; // 0 duration segments are most likely due to metadata only segments or a lack of\n // information.\n\n if (!segmentDuration) {\n return false;\n } // For HLS:\n //\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1\n // The EXTINF duration of each Media Segment in the Playlist\n // file, when rounded to the nearest integer, MUST be less than or equal\n // to the target duration; longer segments can trigger playback stalls\n // or other errors.\n //\n // For DASH, the mpd-parser uses the largest reported segment duration as the target\n // duration. Although that reported duration is occasionally approximate (i.e., not\n // exact), a strict check may report that a segment is too long more often in DASH.\n\n\n return Math.round(segmentDuration) > maxDuration + TIME_FUDGE_FACTOR;\n};\n\nvar getTroublesomeSegmentDurationMessage = function getTroublesomeSegmentDurationMessage(segmentInfo, sourceType) {\n // Right now we aren't following DASH's timing model exactly, so only perform\n // this check for HLS content.\n if (sourceType !== 'hls') {\n return null;\n }\n\n var segmentDuration = mediaDuration({\n audioTimingInfo: segmentInfo.audioTimingInfo,\n videoTimingInfo: segmentInfo.videoTimingInfo\n }); // Don't report if we lack information.\n //\n // If the segment has a duration of 0 it is either a lack of information or a\n // metadata only segment and shouldn't be reported here.\n\n if (!segmentDuration) {\n return null;\n }\n\n var targetDuration = segmentInfo.playlist.targetDuration;\n var isSegmentWayTooLong = segmentTooLong({\n segmentDuration: segmentDuration,\n maxDuration: targetDuration * 2\n });\n var isSegmentSlightlyTooLong = segmentTooLong({\n segmentDuration: segmentDuration,\n maxDuration: targetDuration\n });\n var segmentTooLongMessage = \"Segment with index \" + segmentInfo.mediaIndex + \" \" + (\"from playlist \" + segmentInfo.playlist.id + \" \") + (\"has a duration of \" + segmentDuration + \" \") + (\"when the reported duration is \" + segmentInfo.duration + \" \") + (\"and the target duration is \" + targetDuration + \". \") + 'For HLS content, a duration in excess of the target duration may result in ' + 'playback issues. See the HLS specification section on EXT-X-TARGETDURATION for ' + 'more details: ' + 'https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1';\n\n if (isSegmentWayTooLong || isSegmentSlightlyTooLong) {\n return {\n severity: isSegmentWayTooLong ? 'warn' : 'info',\n message: segmentTooLongMessage\n };\n }\n\n return null;\n};\n/**\n * An object that manages segment loading and appending.\n *\n * @class SegmentLoader\n * @param {Object} options required and optional options\n * @extends videojs.EventTarget\n */\n\n\nvar SegmentLoader = /*#__PURE__*/function (_videojs$EventTarget) {\n _inheritsLoose(SegmentLoader, _videojs$EventTarget);\n\n function SegmentLoader(settings, options) {\n var _this;\n\n _this = _videojs$EventTarget.call(this) || this; // check pre-conditions\n\n if (!settings) {\n throw new TypeError('Initialization settings are required');\n }\n\n if (typeof settings.currentTime !== 'function') {\n throw new TypeError('No currentTime getter specified');\n }\n\n if (!settings.mediaSource) {\n throw new TypeError('No MediaSource specified');\n } // public properties\n\n\n _this.bandwidth = settings.bandwidth;\n _this.throughput = {\n rate: 0,\n count: 0\n };\n _this.roundTrip = NaN;\n\n _this.resetStats_();\n\n _this.mediaIndex = null;\n _this.partIndex = null; // private settings\n\n _this.hasPlayed_ = settings.hasPlayed;\n _this.currentTime_ = settings.currentTime;\n _this.seekable_ = settings.seekable;\n _this.seeking_ = settings.seeking;\n _this.duration_ = settings.duration;\n _this.mediaSource_ = settings.mediaSource;\n _this.vhs_ = settings.vhs;\n _this.loaderType_ = settings.loaderType;\n _this.currentMediaInfo_ = void 0;\n _this.startingMediaInfo_ = void 0;\n _this.segmentMetadataTrack_ = settings.segmentMetadataTrack;\n _this.goalBufferLength_ = settings.goalBufferLength;\n _this.sourceType_ = settings.sourceType;\n _this.sourceUpdater_ = settings.sourceUpdater;\n _this.inbandTextTracks_ = settings.inbandTextTracks;\n _this.state_ = 'INIT';\n _this.timelineChangeController_ = settings.timelineChangeController;\n _this.shouldSaveSegmentTimingInfo_ = true;\n _this.parse708captions_ = settings.parse708captions;\n _this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;\n _this.captionServices_ = settings.captionServices;\n _this.experimentalExactManifestTimings = settings.experimentalExactManifestTimings; // private instance variables\n\n _this.checkBufferTimeout_ = null;\n _this.error_ = void 0;\n _this.currentTimeline_ = -1;\n _this.pendingSegment_ = null;\n _this.xhrOptions_ = null;\n _this.pendingSegments_ = [];\n _this.audioDisabled_ = false;\n _this.isPendingTimestampOffset_ = false; // TODO possibly move gopBuffer and timeMapping info to a separate controller\n\n _this.gopBuffer_ = [];\n _this.timeMapping_ = 0;\n _this.safeAppend_ = videojs.browser.IE_VERSION >= 11;\n _this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n _this.playlistOfLastInitSegment_ = {\n audio: null,\n video: null\n };\n _this.callQueue_ = []; // If the segment loader prepares to load a segment, but does not have enough\n // information yet to start the loading process (e.g., if the audio loader wants to\n // load a segment from the next timeline but the main loader hasn't yet crossed that\n // timeline), then the load call will be added to the queue until it is ready to be\n // processed.\n\n _this.loadQueue_ = [];\n _this.metadataQueue_ = {\n id3: [],\n caption: []\n };\n _this.waitingOnRemove_ = false;\n _this.quotaExceededErrorRetryTimeout_ = null; // Fragmented mp4 playback\n\n _this.activeInitSegmentId_ = null;\n _this.initSegments_ = {}; // HLSe playback\n\n _this.cacheEncryptionKeys_ = settings.cacheEncryptionKeys;\n _this.keyCache_ = {};\n _this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings\n // between a time in the display time and a segment index within\n // a playlist\n\n _this.syncController_ = settings.syncController;\n _this.syncPoint_ = {\n segmentIndex: 0,\n time: 0\n };\n _this.transmuxer_ = _this.createTransmuxer_();\n\n _this.triggerSyncInfoUpdate_ = function () {\n return _this.trigger('syncinfoupdate');\n };\n\n _this.syncController_.on('syncinfoupdate', _this.triggerSyncInfoUpdate_);\n\n _this.mediaSource_.addEventListener('sourceopen', function () {\n if (!_this.isEndOfStream_()) {\n _this.ended_ = false;\n }\n }); // ...for determining the fetch location\n\n\n _this.fetchAtBuffer_ = false;\n _this.logger_ = logger(\"SegmentLoader[\" + _this.loaderType_ + \"]\");\n Object.defineProperty(_assertThisInitialized(_this), 'state', {\n get: function get() {\n return this.state_;\n },\n set: function set(newState) {\n if (newState !== this.state_) {\n this.logger_(this.state_ + \" -> \" + newState);\n this.state_ = newState;\n this.trigger('statechange');\n }\n }\n });\n\n _this.sourceUpdater_.on('ready', function () {\n if (_this.hasEnoughInfoToAppend_()) {\n _this.processCallQueue_();\n }\n }); // Only the main loader needs to listen for pending timeline changes, as the main\n // loader should wait for audio to be ready to change its timeline so that both main\n // and audio timelines change together. For more details, see the\n // shouldWaitForTimelineChange function.\n\n\n if (_this.loaderType_ === 'main') {\n _this.timelineChangeController_.on('pendingtimelinechange', function () {\n if (_this.hasEnoughInfoToAppend_()) {\n _this.processCallQueue_();\n }\n });\n } // The main loader only listens on pending timeline changes, but the audio loader,\n // since its loads follow main, needs to listen on timeline changes. For more details,\n // see the shouldWaitForTimelineChange function.\n\n\n if (_this.loaderType_ === 'audio') {\n _this.timelineChangeController_.on('timelinechange', function () {\n if (_this.hasEnoughInfoToLoad_()) {\n _this.processLoadQueue_();\n }\n\n if (_this.hasEnoughInfoToAppend_()) {\n _this.processCallQueue_();\n }\n });\n }\n\n return _this;\n }\n\n var _proto = SegmentLoader.prototype;\n\n _proto.createTransmuxer_ = function createTransmuxer_() {\n return segmentTransmuxer.createTransmuxer({\n remux: false,\n alignGopsAtEnd: this.safeAppend_,\n keepOriginalTimestamps: true,\n parse708captions: this.parse708captions_,\n captionServices: this.captionServices_\n });\n }\n /**\n * reset all of our media stats\n *\n * @private\n */\n ;\n\n _proto.resetStats_ = function resetStats_() {\n this.mediaBytesTransferred = 0;\n this.mediaRequests = 0;\n this.mediaRequestsAborted = 0;\n this.mediaRequestsTimedout = 0;\n this.mediaRequestsErrored = 0;\n this.mediaTransferDuration = 0;\n this.mediaSecondsLoaded = 0;\n this.mediaAppends = 0;\n }\n /**\n * dispose of the SegmentLoader and reset to the default state\n */\n ;\n\n _proto.dispose = function dispose() {\n this.trigger('dispose');\n this.state = 'DISPOSED';\n this.pause();\n this.abort_();\n\n if (this.transmuxer_) {\n this.transmuxer_.terminate();\n }\n\n this.resetStats_();\n\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n\n if (this.syncController_ && this.triggerSyncInfoUpdate_) {\n this.syncController_.off('syncinfoupdate', this.triggerSyncInfoUpdate_);\n }\n\n this.off();\n };\n\n _proto.setAudio = function setAudio(enable) {\n this.audioDisabled_ = !enable;\n\n if (enable) {\n this.appendInitSegment_.audio = true;\n } else {\n // remove current track audio if it gets disabled\n this.sourceUpdater_.removeAudio(0, this.duration_());\n }\n }\n /**\n * abort anything that is currently doing on with the SegmentLoader\n * and reset to a default state\n */\n ;\n\n _proto.abort = function abort() {\n if (this.state !== 'WAITING') {\n if (this.pendingSegment_) {\n this.pendingSegment_ = null;\n }\n\n return;\n }\n\n this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY\n // since we are no longer \"waiting\" on any requests. XHR callback is not always run\n // when the request is aborted. This will prevent the loader from being stuck in the\n // WAITING state indefinitely.\n\n this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the\n // next segment\n\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n }\n /**\n * abort all pending xhr requests and null any pending segements\n *\n * @private\n */\n ;\n\n _proto.abort_ = function abort_() {\n if (this.pendingSegment_ && this.pendingSegment_.abortRequests) {\n this.pendingSegment_.abortRequests();\n } // clear out the segment being processed\n\n\n this.pendingSegment_ = null;\n this.callQueue_ = [];\n this.loadQueue_ = [];\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_);\n this.waitingOnRemove_ = false;\n window$1.clearTimeout(this.quotaExceededErrorRetryTimeout_);\n this.quotaExceededErrorRetryTimeout_ = null;\n };\n\n _proto.checkForAbort_ = function checkForAbort_(requestId) {\n // If the state is APPENDING, then aborts will not modify the state, meaning the first\n // callback that happens should reset the state to READY so that loading can continue.\n if (this.state === 'APPENDING' && !this.pendingSegment_) {\n this.state = 'READY';\n return true;\n }\n\n if (!this.pendingSegment_ || this.pendingSegment_.requestId !== requestId) {\n return true;\n }\n\n return false;\n }\n /**\n * set an error on the segment loader and null out any pending segements\n *\n * @param {Error} error the error to set on the SegmentLoader\n * @return {Error} the error that was set or that is currently set\n */\n ;\n\n _proto.error = function error(_error) {\n if (typeof _error !== 'undefined') {\n this.logger_('error occurred:', _error);\n this.error_ = _error;\n }\n\n this.pendingSegment_ = null;\n return this.error_;\n };\n\n _proto.endOfStream = function endOfStream() {\n this.ended_ = true;\n\n if (this.transmuxer_) {\n // need to clear out any cached data to prepare for the new segment\n segmentTransmuxer.reset(this.transmuxer_);\n }\n\n this.gopBuffer_.length = 0;\n this.pause();\n this.trigger('ended');\n }\n /**\n * Indicates which time ranges are buffered\n *\n * @return {TimeRange}\n * TimeRange object representing the current buffered ranges\n */\n ;\n\n _proto.buffered_ = function buffered_() {\n var trackInfo = this.getMediaInfo_();\n\n if (!this.sourceUpdater_ || !trackInfo) {\n return videojs.createTimeRanges();\n }\n\n if (this.loaderType_ === 'main') {\n var hasAudio = trackInfo.hasAudio,\n hasVideo = trackInfo.hasVideo,\n isMuxed = trackInfo.isMuxed;\n\n if (hasVideo && hasAudio && !this.audioDisabled_ && !isMuxed) {\n return this.sourceUpdater_.buffered();\n }\n\n if (hasVideo) {\n return this.sourceUpdater_.videoBuffered();\n }\n } // One case that can be ignored for now is audio only with alt audio,\n // as we don't yet have proper support for that.\n\n\n return this.sourceUpdater_.audioBuffered();\n }\n /**\n * Gets and sets init segment for the provided map\n *\n * @param {Object} map\n * The map object representing the init segment to get or set\n * @param {boolean=} set\n * If true, the init segment for the provided map should be saved\n * @return {Object}\n * map object for desired init segment\n */\n ;\n\n _proto.initSegmentForMap = function initSegmentForMap(map, set) {\n if (set === void 0) {\n set = false;\n }\n\n if (!map) {\n return null;\n }\n\n var id = initSegmentId(map);\n var storedMap = this.initSegments_[id];\n\n if (set && !storedMap && map.bytes) {\n this.initSegments_[id] = storedMap = {\n resolvedUri: map.resolvedUri,\n byterange: map.byterange,\n bytes: map.bytes,\n tracks: map.tracks,\n timescales: map.timescales\n };\n }\n\n return storedMap || map;\n }\n /**\n * Gets and sets key for the provided key\n *\n * @param {Object} key\n * The key object representing the key to get or set\n * @param {boolean=} set\n * If true, the key for the provided key should be saved\n * @return {Object}\n * Key object for desired key\n */\n ;\n\n _proto.segmentKey = function segmentKey(key, set) {\n if (set === void 0) {\n set = false;\n }\n\n if (!key) {\n return null;\n }\n\n var id = segmentKeyId(key);\n var storedKey = this.keyCache_[id]; // TODO: We should use the HTTP Expires header to invalidate our cache per\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-6.2.3\n\n if (this.cacheEncryptionKeys_ && set && !storedKey && key.bytes) {\n this.keyCache_[id] = storedKey = {\n resolvedUri: key.resolvedUri,\n bytes: key.bytes\n };\n }\n\n var result = {\n resolvedUri: (storedKey || key).resolvedUri\n };\n\n if (storedKey) {\n result.bytes = storedKey.bytes;\n }\n\n return result;\n }\n /**\n * Returns true if all configuration required for loading is present, otherwise false.\n *\n * @return {boolean} True if the all configuration is ready for loading\n * @private\n */\n ;\n\n _proto.couldBeginLoading_ = function couldBeginLoading_() {\n return this.playlist_ && !this.paused();\n }\n /**\n * load a playlist and start to fill the buffer\n */\n ;\n\n _proto.load = function load() {\n // un-pause\n this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be\n // specified\n\n if (!this.playlist_) {\n return;\n } // if all the configuration is ready, initialize and begin loading\n\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n return this.init_();\n } // if we're in the middle of processing a segment already, don't\n // kick off an additional segment request\n\n\n if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {\n return;\n }\n\n this.state = 'READY';\n }\n /**\n * Once all the starting parameters have been specified, begin\n * operation. This method should only be invoked from the INIT\n * state.\n *\n * @private\n */\n ;\n\n _proto.init_ = function init_() {\n this.state = 'READY'; // if this is the audio segment loader, and it hasn't been inited before, then any old\n // audio data from the muxed content should be removed\n\n this.resetEverything();\n return this.monitorBuffer_();\n }\n /**\n * set a playlist on the segment loader\n *\n * @param {PlaylistLoader} media the playlist to set on the segment loader\n */\n ;\n\n _proto.playlist = function playlist(newPlaylist, options) {\n if (options === void 0) {\n options = {};\n }\n\n if (!newPlaylist) {\n return;\n }\n\n var oldPlaylist = this.playlist_;\n var segmentInfo = this.pendingSegment_;\n this.playlist_ = newPlaylist;\n this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist\n // is always our zero-time so force a sync update each time the playlist\n // is refreshed from the server\n //\n // Use the INIT state to determine if playback has started, as the playlist sync info\n // should be fixed once requests begin (as sync points are generated based on sync\n // info), but not before then.\n\n if (this.state === 'INIT') {\n newPlaylist.syncInfo = {\n mediaSequence: newPlaylist.mediaSequence,\n time: 0\n }; // Setting the date time mapping means mapping the program date time (if available)\n // to time 0 on the player's timeline. The playlist's syncInfo serves a similar\n // purpose, mapping the initial mediaSequence to time zero. Since the syncInfo can\n // be updated as the playlist is refreshed before the loader starts loading, the\n // program date time mapping needs to be updated as well.\n //\n // This mapping is only done for the main loader because a program date time should\n // map equivalently between playlists.\n\n if (this.loaderType_ === 'main') {\n this.syncController_.setDateTimeMappingForStart(newPlaylist);\n }\n }\n\n var oldId = null;\n\n if (oldPlaylist) {\n if (oldPlaylist.id) {\n oldId = oldPlaylist.id;\n } else if (oldPlaylist.uri) {\n oldId = oldPlaylist.uri;\n }\n }\n\n this.logger_(\"playlist update [\" + oldId + \" => \" + (newPlaylist.id || newPlaylist.uri) + \"]\"); // in VOD, this is always a rendition switch (or we updated our syncInfo above)\n // in LIVE, we always want to update with new playlists (including refreshes)\n\n this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start\n // buffering now\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n return this.init_();\n }\n\n if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {\n if (this.mediaIndex !== null) {\n // we must reset/resync the segment loader when we switch renditions and\n // the segment loader is already synced to the previous rendition\n // on playlist changes we want it to be possible to fetch\n // at the buffer for vod but not for live. So we use resetLoader\n // for live and resyncLoader for vod. We want this because\n // if a playlist uses independent and non-independent segments/parts the\n // buffer may not accurately reflect the next segment that we should try\n // downloading.\n if (!newPlaylist.endList) {\n this.resetLoader();\n } else {\n this.resyncLoader();\n }\n }\n\n this.currentMediaInfo_ = void 0;\n this.trigger('playlistupdate'); // the rest of this function depends on `oldPlaylist` being defined\n\n return;\n } // we reloaded the same playlist so we are in a live scenario\n // and we will likely need to adjust the mediaIndex\n\n\n var mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;\n this.logger_(\"live window shift [\" + mediaSequenceDiff + \"]\"); // update the mediaIndex on the SegmentLoader\n // this is important because we can abort a request and this value must be\n // equal to the last appended mediaIndex\n\n if (this.mediaIndex !== null) {\n this.mediaIndex -= mediaSequenceDiff; // this can happen if we are going to load the first segment, but get a playlist\n // update during that. mediaIndex would go from 0 to -1 if mediaSequence in the\n // new playlist was incremented by 1.\n\n if (this.mediaIndex < 0) {\n this.mediaIndex = null;\n this.partIndex = null;\n } else {\n var segment = this.playlist_.segments[this.mediaIndex]; // partIndex should remain the same for the same segment\n // unless parts fell off of the playlist for this segment.\n // In that case we need to reset partIndex and resync\n\n if (this.partIndex && (!segment.parts || !segment.parts.length || !segment.parts[this.partIndex])) {\n var mediaIndex = this.mediaIndex;\n this.logger_(\"currently processing part (index \" + this.partIndex + \") no longer exists.\");\n this.resetLoader(); // We want to throw away the partIndex and the data associated with it,\n // as the part was dropped from our current playlists segment.\n // The mediaIndex will still be valid so keep that around.\n\n this.mediaIndex = mediaIndex;\n }\n }\n } // update the mediaIndex on the SegmentInfo object\n // this is important because we will update this.mediaIndex with this value\n // in `handleAppendsDone_` after the segment has been successfully appended\n\n\n if (segmentInfo) {\n segmentInfo.mediaIndex -= mediaSequenceDiff;\n\n if (segmentInfo.mediaIndex < 0) {\n segmentInfo.mediaIndex = null;\n segmentInfo.partIndex = null;\n } else {\n // we need to update the referenced segment so that timing information is\n // saved for the new playlist's segment, however, if the segment fell off the\n // playlist, we can leave the old reference and just lose the timing info\n if (segmentInfo.mediaIndex >= 0) {\n segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];\n }\n\n if (segmentInfo.partIndex >= 0 && segmentInfo.segment.parts) {\n segmentInfo.part = segmentInfo.segment.parts[segmentInfo.partIndex];\n }\n }\n }\n\n this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);\n }\n /**\n * Prevent the loader from fetching additional segments. If there\n * is a segment request outstanding, it will finish processing\n * before the loader halts. A segment loader can be unpaused by\n * calling load().\n */\n ;\n\n _proto.pause = function pause() {\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n this.checkBufferTimeout_ = null;\n }\n }\n /**\n * Returns whether the segment loader is fetching additional\n * segments when given the opportunity. This property can be\n * modified through calls to pause() and load().\n */\n ;\n\n _proto.paused = function paused() {\n return this.checkBufferTimeout_ === null;\n }\n /**\n * Delete all the buffered data and reset the SegmentLoader\n *\n * @param {Function} [done] an optional callback to be executed when the remove\n * operation is complete\n */\n ;\n\n _proto.resetEverything = function resetEverything(done) {\n this.ended_ = false;\n this.activeInitSegmentId_ = null;\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n this.resetLoader(); // remove from 0, the earliest point, to Infinity, to signify removal of everything.\n // VTT Segment Loader doesn't need to do anything but in the regular SegmentLoader,\n // we then clamp the value to duration if necessary.\n\n this.remove(0, Infinity, done); // clears fmp4 captions\n\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearAllMp4Captions'\n }); // reset the cache in the transmuxer\n\n this.transmuxer_.postMessage({\n action: 'reset'\n });\n }\n }\n /**\n * Force the SegmentLoader to resync and start loading around the currentTime instead\n * of starting at the end of the buffer\n *\n * Useful for fast quality changes\n */\n ;\n\n _proto.resetLoader = function resetLoader() {\n this.fetchAtBuffer_ = false;\n this.resyncLoader();\n }\n /**\n * Force the SegmentLoader to restart synchronization and make a conservative guess\n * before returning to the simple walk-forward method\n */\n ;\n\n _proto.resyncLoader = function resyncLoader() {\n if (this.transmuxer_) {\n // need to clear out any cached data to prepare for the new segment\n segmentTransmuxer.reset(this.transmuxer_);\n }\n\n this.mediaIndex = null;\n this.partIndex = null;\n this.syncPoint_ = null;\n this.isPendingTimestampOffset_ = false;\n this.callQueue_ = [];\n this.loadQueue_ = [];\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n this.abort();\n\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearParsedMp4Captions'\n });\n }\n }\n /**\n * Remove any data in the source buffer between start and end times\n *\n * @param {number} start - the start time of the region to remove from the buffer\n * @param {number} end - the end time of the region to remove from the buffer\n * @param {Function} [done] - an optional callback to be executed when the remove\n * @param {boolean} force - force all remove operations to happen\n * operation is complete\n */\n ;\n\n _proto.remove = function remove(start, end, done, force) {\n if (done === void 0) {\n done = function done() {};\n }\n\n if (force === void 0) {\n force = false;\n } // clamp end to duration if we need to remove everything.\n // This is due to a browser bug that causes issues if we remove to Infinity.\n // videojs/videojs-contrib-hls#1225\n\n\n if (end === Infinity) {\n end = this.duration_();\n } // skip removes that would throw an error\n // commonly happens during a rendition switch at the start of a video\n // from start 0 to end 0\n\n\n if (end <= start) {\n this.logger_('skipping remove because end ${end} is <= start ${start}');\n return;\n }\n\n if (!this.sourceUpdater_ || !this.getMediaInfo_()) {\n this.logger_('skipping remove because no source updater or starting media info'); // nothing to remove if we haven't processed any media\n\n return;\n } // set it to one to complete this function's removes\n\n\n var removesRemaining = 1;\n\n var removeFinished = function removeFinished() {\n removesRemaining--;\n\n if (removesRemaining === 0) {\n done();\n }\n };\n\n if (force || !this.audioDisabled_) {\n removesRemaining++;\n this.sourceUpdater_.removeAudio(start, end, removeFinished);\n } // While it would be better to only remove video if the main loader has video, this\n // should be safe with audio only as removeVideo will call back even if there's no\n // video buffer.\n //\n // In theory we can check to see if there's video before calling the remove, but in\n // the event that we're switching between renditions and from video to audio only\n // (when we add support for that), we may need to clear the video contents despite\n // what the new media will contain.\n\n\n if (force || this.loaderType_ === 'main') {\n this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);\n removesRemaining++;\n this.sourceUpdater_.removeVideo(start, end, removeFinished);\n } // remove any captions and ID3 tags\n\n\n for (var track in this.inbandTextTracks_) {\n removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);\n }\n\n removeCuesFromTrack(start, end, this.segmentMetadataTrack_); // finished this function's removes\n\n removeFinished();\n }\n /**\n * (re-)schedule monitorBufferTick_ to run as soon as possible\n *\n * @private\n */\n ;\n\n _proto.monitorBuffer_ = function monitorBuffer_() {\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n\n this.checkBufferTimeout_ = window$1.setTimeout(this.monitorBufferTick_.bind(this), 1);\n }\n /**\n * As long as the SegmentLoader is in the READY state, periodically\n * invoke fillBuffer_().\n *\n * @private\n */\n ;\n\n _proto.monitorBufferTick_ = function monitorBufferTick_() {\n if (this.state === 'READY') {\n this.fillBuffer_();\n }\n\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n\n this.checkBufferTimeout_ = window$1.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);\n }\n /**\n * fill the buffer with segements unless the sourceBuffers are\n * currently updating\n *\n * Note: this function should only ever be called by monitorBuffer_\n * and never directly\n *\n * @private\n */\n ;\n\n _proto.fillBuffer_ = function fillBuffer_() {\n // TODO since the source buffer maintains a queue, and we shouldn't call this function\n // except when we're ready for the next segment, this check can most likely be removed\n if (this.sourceUpdater_.updating()) {\n return;\n } // see if we need to begin loading immediately\n\n\n var segmentInfo = this.chooseNextRequest_();\n\n if (!segmentInfo) {\n return;\n }\n\n if (typeof segmentInfo.timestampOffset === 'number') {\n this.isPendingTimestampOffset_ = false;\n this.timelineChangeController_.pendingTimelineChange({\n type: this.loaderType_,\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n });\n }\n\n this.loadSegment_(segmentInfo);\n }\n /**\n * Determines if we should call endOfStream on the media source based\n * on the state of the buffer or if appened segment was the final\n * segment in the playlist.\n *\n * @param {number} [mediaIndex] the media index of segment we last appended\n * @param {Object} [playlist] a media playlist object\n * @return {boolean} do we need to call endOfStream on the MediaSource\n */\n ;\n\n _proto.isEndOfStream_ = function isEndOfStream_(mediaIndex, playlist, partIndex) {\n if (mediaIndex === void 0) {\n mediaIndex = this.mediaIndex;\n }\n\n if (playlist === void 0) {\n playlist = this.playlist_;\n }\n\n if (partIndex === void 0) {\n partIndex = this.partIndex;\n }\n\n if (!playlist || !this.mediaSource_) {\n return false;\n }\n\n var segment = typeof mediaIndex === 'number' && playlist.segments[mediaIndex]; // mediaIndex is zero based but length is 1 based\n\n var appendedLastSegment = mediaIndex + 1 === playlist.segments.length; // true if there are no parts, or this is the last part.\n\n var appendedLastPart = !segment || !segment.parts || partIndex + 1 === segment.parts.length; // if we've buffered to the end of the video, we need to call endOfStream\n // so that MediaSources can trigger the `ended` event when it runs out of\n // buffered data instead of waiting for me\n\n return playlist.endList && this.mediaSource_.readyState === 'open' && appendedLastSegment && appendedLastPart;\n }\n /**\n * Determines what request should be made given current segment loader state.\n *\n * @return {Object} a request object that describes the segment/part to load\n */\n ;\n\n _proto.chooseNextRequest_ = function chooseNextRequest_() {\n var buffered = this.buffered_();\n var bufferedEnd = lastBufferedEnd(buffered) || 0;\n var bufferedTime = timeAheadOf(buffered, this.currentTime_());\n var preloaded = !this.hasPlayed_() && bufferedTime >= 1;\n var haveEnoughBuffer = bufferedTime >= this.goalBufferLength_();\n var segments = this.playlist_.segments; // return no segment if:\n // 1. we don't have segments\n // 2. The video has not yet played and we already downloaded a segment\n // 3. we already have enough buffered time\n\n if (!segments.length || preloaded || haveEnoughBuffer) {\n return null;\n }\n\n this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());\n var next = {\n partIndex: null,\n mediaIndex: null,\n startOfSegment: null,\n playlist: this.playlist_,\n isSyncRequest: Boolean(!this.syncPoint_)\n };\n\n if (next.isSyncRequest) {\n next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);\n } else if (this.mediaIndex !== null) {\n var segment = segments[this.mediaIndex];\n var partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;\n next.startOfSegment = segment.end ? segment.end : bufferedEnd;\n\n if (segment.parts && segment.parts[partIndex + 1]) {\n next.mediaIndex = this.mediaIndex;\n next.partIndex = partIndex + 1;\n } else {\n next.mediaIndex = this.mediaIndex + 1;\n }\n } else {\n // Find the segment containing the end of the buffer or current time.\n var _Playlist$getMediaInf = Playlist.getMediaInfoForTime({\n experimentalExactManifestTimings: this.experimentalExactManifestTimings,\n playlist: this.playlist_,\n currentTime: this.fetchAtBuffer_ ? bufferedEnd : this.currentTime_(),\n startingPartIndex: this.syncPoint_.partIndex,\n startingSegmentIndex: this.syncPoint_.segmentIndex,\n startTime: this.syncPoint_.time\n }),\n segmentIndex = _Playlist$getMediaInf.segmentIndex,\n startTime = _Playlist$getMediaInf.startTime,\n _partIndex = _Playlist$getMediaInf.partIndex;\n\n next.getMediaInfoForTime = this.fetchAtBuffer_ ? \"bufferedEnd \" + bufferedEnd : \"currentTime \" + this.currentTime_();\n next.mediaIndex = segmentIndex;\n next.startOfSegment = startTime;\n next.partIndex = _partIndex;\n }\n\n var nextSegment = segments[next.mediaIndex];\n var nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or\n // the next partIndex is invalid do not choose a next segment.\n\n if (!nextSegment || typeof next.partIndex === 'number' && !nextPart) {\n return null;\n } // if the next segment has parts, and we don't have a partIndex.\n // Set partIndex to 0\n\n\n if (typeof next.partIndex !== 'number' && nextSegment.parts) {\n next.partIndex = 0;\n nextPart = nextSegment.parts[0];\n } // if we have no buffered data then we need to make sure\n // that the next part we append is \"independent\" if possible.\n // So we check if the previous part is independent, and request\n // it if it is.\n\n\n if (!bufferedTime && nextPart && !nextPart.independent) {\n if (next.partIndex === 0) {\n var lastSegment = segments[next.mediaIndex - 1];\n var lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];\n\n if (lastSegmentLastPart && lastSegmentLastPart.independent) {\n next.mediaIndex -= 1;\n next.partIndex = lastSegment.parts.length - 1;\n next.independent = 'previous segment';\n }\n } else if (nextSegment.parts[next.partIndex - 1].independent) {\n next.partIndex -= 1;\n next.independent = 'previous part';\n }\n }\n\n var ended = this.mediaSource_ && this.mediaSource_.readyState === 'ended'; // do not choose a next segment if all of the following:\n // 1. this is the last segment in the playlist\n // 2. end of stream has been called on the media source already\n // 3. the player is not seeking\n\n if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {\n return null;\n }\n\n return this.generateSegmentInfo_(next);\n };\n\n _proto.generateSegmentInfo_ = function generateSegmentInfo_(options) {\n var independent = options.independent,\n playlist = options.playlist,\n mediaIndex = options.mediaIndex,\n startOfSegment = options.startOfSegment,\n isSyncRequest = options.isSyncRequest,\n partIndex = options.partIndex,\n forceTimestampOffset = options.forceTimestampOffset,\n getMediaInfoForTime = options.getMediaInfoForTime;\n var segment = playlist.segments[mediaIndex];\n var part = typeof partIndex === 'number' && segment.parts[partIndex];\n var segmentInfo = {\n requestId: 'segment-loader-' + Math.random(),\n // resolve the segment URL relative to the playlist\n uri: part && part.resolvedUri || segment.resolvedUri,\n // the segment's mediaIndex at the time it was requested\n mediaIndex: mediaIndex,\n partIndex: part ? partIndex : null,\n // whether or not to update the SegmentLoader's state with this\n // segment's mediaIndex\n isSyncRequest: isSyncRequest,\n startOfSegment: startOfSegment,\n // the segment's playlist\n playlist: playlist,\n // unencrypted bytes of the segment\n bytes: null,\n // when a key is defined for this segment, the encrypted bytes\n encryptedBytes: null,\n // The target timestampOffset for this segment when we append it\n // to the source buffer\n timestampOffset: null,\n // The timeline that the segment is in\n timeline: segment.timeline,\n // The expected duration of the segment in seconds\n duration: part && part.duration || segment.duration,\n // retain the segment in case the playlist updates while doing an async process\n segment: segment,\n part: part,\n byteLength: 0,\n transmuxer: this.transmuxer_,\n // type of getMediaInfoForTime that was used to get this segment\n getMediaInfoForTime: getMediaInfoForTime,\n independent: independent\n };\n var overrideCheck = typeof forceTimestampOffset !== 'undefined' ? forceTimestampOffset : this.isPendingTimestampOffset_;\n segmentInfo.timestampOffset = this.timestampOffsetForSegment_({\n segmentTimeline: segment.timeline,\n currentTimeline: this.currentTimeline_,\n startOfSegment: startOfSegment,\n buffered: this.buffered_(),\n overrideCheck: overrideCheck\n });\n var audioBufferedEnd = lastBufferedEnd(this.sourceUpdater_.audioBuffered());\n\n if (typeof audioBufferedEnd === 'number') {\n // since the transmuxer is using the actual timing values, but the buffer is\n // adjusted by the timestamp offset, we must adjust the value here\n segmentInfo.audioAppendStart = audioBufferedEnd - this.sourceUpdater_.audioTimestampOffset();\n }\n\n if (this.sourceUpdater_.videoBuffered().length) {\n segmentInfo.gopsToAlignWith = gopsSafeToAlignWith(this.gopBuffer_, // since the transmuxer is using the actual timing values, but the time is\n // adjusted by the timestmap offset, we must adjust the value here\n this.currentTime_() - this.sourceUpdater_.videoTimestampOffset(), this.timeMapping_);\n }\n\n return segmentInfo;\n } // get the timestampoffset for a segment,\n // added so that vtt segment loader can override and prevent\n // adding timestamp offsets.\n ;\n\n _proto.timestampOffsetForSegment_ = function timestampOffsetForSegment_(options) {\n return timestampOffsetForSegment(options);\n }\n /**\n * Determines if the network has enough bandwidth to complete the current segment\n * request in a timely manner. If not, the request will be aborted early and bandwidth\n * updated to trigger a playlist switch.\n *\n * @param {Object} stats\n * Object containing stats about the request timing and size\n * @private\n */\n ;\n\n _proto.earlyAbortWhenNeeded_ = function earlyAbortWhenNeeded_(stats) {\n if (this.vhs_.tech_.paused() || // Don't abort if the current playlist is on the lowestEnabledRendition\n // TODO: Replace using timeout with a boolean indicating whether this playlist is\n // the lowestEnabledRendition.\n !this.xhrOptions_.timeout || // Don't abort if we have no bandwidth information to estimate segment sizes\n !this.playlist_.attributes.BANDWIDTH) {\n return;\n } // Wait at least 1 second since the first byte of data has been received before\n // using the calculated bandwidth from the progress event to allow the bitrate\n // to stabilize\n\n\n if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {\n return;\n }\n\n var currentTime = this.currentTime_();\n var measuredBandwidth = stats.bandwidth;\n var segmentDuration = this.pendingSegment_.duration;\n var requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort\n // if we are only left with less than 1 second when the request completes.\n // A negative timeUntilRebuffering indicates we are already rebuffering\n\n var timeUntilRebuffer$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.vhs_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download\n // is larger than the estimated time until the player runs out of forward buffer\n\n if (requestTimeRemaining <= timeUntilRebuffer$1) {\n return;\n }\n\n var switchCandidate = minRebufferMaxBandwidthSelector({\n master: this.vhs_.playlists.master,\n currentTime: currentTime,\n bandwidth: measuredBandwidth,\n duration: this.duration_(),\n segmentDuration: segmentDuration,\n timeUntilRebuffer: timeUntilRebuffer$1,\n currentTimeline: this.currentTimeline_,\n syncController: this.syncController_\n });\n\n if (!switchCandidate) {\n return;\n }\n\n var rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$1;\n var timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;\n var minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the\n // potential round trip time of the new request so that we are not too aggressive\n // with switching to a playlist that might save us a fraction of a second.\n\n if (timeUntilRebuffer$1 <= TIME_FUDGE_FACTOR) {\n minimumTimeSaving = 1;\n }\n\n if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {\n return;\n } // set the bandwidth to that of the desired playlist being sure to scale by\n // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it\n // don't trigger a bandwidthupdate as the bandwidth is artifial\n\n\n this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;\n this.trigger('earlyabort');\n };\n\n _proto.handleAbort_ = function handleAbort_(segmentInfo) {\n this.logger_(\"Aborting \" + segmentInfoString(segmentInfo));\n this.mediaRequestsAborted += 1;\n }\n /**\n * XHR `progress` event handler\n *\n * @param {Event}\n * The XHR `progress` event\n * @param {Object} simpleSegment\n * A simplified segment object copy\n * @private\n */\n ;\n\n _proto.handleProgress_ = function handleProgress_(event, simpleSegment) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n\n this.trigger('progress');\n };\n\n _proto.handleTrackInfo_ = function handleTrackInfo_(simpleSegment, trackInfo) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n\n if (this.checkForIllegalMediaSwitch(trackInfo)) {\n return;\n }\n\n trackInfo = trackInfo || {}; // When we have track info, determine what media types this loader is dealing with.\n // Guard against cases where we're not getting track info at all until we are\n // certain that all streams will provide it.\n\n if (!shallowEqual(this.currentMediaInfo_, trackInfo)) {\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n this.startingMediaInfo_ = trackInfo;\n this.currentMediaInfo_ = trackInfo;\n this.logger_('trackinfo update', trackInfo);\n this.trigger('trackinfo');\n } // trackinfo may cause an abort if the trackinfo\n // causes a codec change to an unsupported codec.\n\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // set trackinfo on the pending segment so that\n // it can append.\n\n\n this.pendingSegment_.trackInfo = trackInfo; // check if any calls were waiting on the track info\n\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n };\n\n _proto.handleTimingInfo_ = function handleTimingInfo_(simpleSegment, mediaType, timeType, time) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n\n var segmentInfo = this.pendingSegment_;\n var timingInfoProperty = timingInfoPropertyForMedia(mediaType);\n segmentInfo[timingInfoProperty] = segmentInfo[timingInfoProperty] || {};\n segmentInfo[timingInfoProperty][timeType] = time;\n this.logger_(\"timinginfo: \" + mediaType + \" - \" + timeType + \" - \" + time); // check if any calls were waiting on the timing info\n\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n };\n\n _proto.handleCaptions_ = function handleCaptions_(simpleSegment, captionData) {\n var _this2 = this;\n\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // This could only happen with fmp4 segments, but\n // should still not happen in general\n\n\n if (captionData.length === 0) {\n this.logger_('SegmentLoader received no captions from a caption event');\n return;\n }\n\n var segmentInfo = this.pendingSegment_; // Wait until we have some video data so that caption timing\n // can be adjusted by the timestamp offset\n\n if (!segmentInfo.hasAppendedData_) {\n this.metadataQueue_.caption.push(this.handleCaptions_.bind(this, simpleSegment, captionData));\n return;\n }\n\n var timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset();\n var captionTracks = {}; // get total start/end and captions for each track/stream\n\n captionData.forEach(function (caption) {\n // caption.stream is actually a track name...\n // set to the existing values in tracks or default values\n captionTracks[caption.stream] = captionTracks[caption.stream] || {\n // Infinity, as any other value will be less than this\n startTime: Infinity,\n captions: [],\n // 0 as an other value will be more than this\n endTime: 0\n };\n var captionTrack = captionTracks[caption.stream];\n captionTrack.startTime = Math.min(captionTrack.startTime, caption.startTime + timestampOffset);\n captionTrack.endTime = Math.max(captionTrack.endTime, caption.endTime + timestampOffset);\n captionTrack.captions.push(caption);\n });\n Object.keys(captionTracks).forEach(function (trackName) {\n var _captionTracks$trackN = captionTracks[trackName],\n startTime = _captionTracks$trackN.startTime,\n endTime = _captionTracks$trackN.endTime,\n captions = _captionTracks$trackN.captions;\n var inbandTextTracks = _this2.inbandTextTracks_;\n\n _this2.logger_(\"adding cues from \" + startTime + \" -> \" + endTime + \" for \" + trackName);\n\n createCaptionsTrackIfNotExists(inbandTextTracks, _this2.vhs_.tech_, trackName); // clear out any cues that start and end at the same time period for the same track.\n // We do this because a rendition change that also changes the timescale for captions\n // will result in captions being re-parsed for certain segments. If we add them again\n // without clearing we will have two of the same captions visible.\n\n removeCuesFromTrack(startTime, endTime, inbandTextTracks[trackName]);\n addCaptionData({\n captionArray: captions,\n inbandTextTracks: inbandTextTracks,\n timestampOffset: timestampOffset\n });\n }); // Reset stored captions since we added parsed\n // captions to a text track at this point\n\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearParsedMp4Captions'\n });\n }\n };\n\n _proto.handleId3_ = function handleId3_(simpleSegment, id3Frames, dispatchType) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n\n var segmentInfo = this.pendingSegment_; // we need to have appended data in order for the timestamp offset to be set\n\n if (!segmentInfo.hasAppendedData_) {\n this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));\n return;\n }\n\n var timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed\n // audio/video source with a metadata track, and an alt audio with a metadata track.\n // However, this probably won't happen, and if it does it can be handled then.\n\n createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.vhs_.tech_);\n addMetadata({\n inbandTextTracks: this.inbandTextTracks_,\n metadataArray: id3Frames,\n timestampOffset: timestampOffset,\n videoDuration: this.duration_()\n });\n };\n\n _proto.processMetadataQueue_ = function processMetadataQueue_() {\n this.metadataQueue_.id3.forEach(function (fn) {\n return fn();\n });\n this.metadataQueue_.caption.forEach(function (fn) {\n return fn();\n });\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n };\n\n _proto.processCallQueue_ = function processCallQueue_() {\n var callQueue = this.callQueue_; // Clear out the queue before the queued functions are run, since some of the\n // functions may check the length of the load queue and default to pushing themselves\n // back onto the queue.\n\n this.callQueue_ = [];\n callQueue.forEach(function (fun) {\n return fun();\n });\n };\n\n _proto.processLoadQueue_ = function processLoadQueue_() {\n var loadQueue = this.loadQueue_; // Clear out the queue before the queued functions are run, since some of the\n // functions may check the length of the load queue and default to pushing themselves\n // back onto the queue.\n\n this.loadQueue_ = [];\n loadQueue.forEach(function (fun) {\n return fun();\n });\n }\n /**\n * Determines whether the loader has enough info to load the next segment.\n *\n * @return {boolean}\n * Whether or not the loader has enough info to load the next segment\n */\n ;\n\n _proto.hasEnoughInfoToLoad_ = function hasEnoughInfoToLoad_() {\n // Since primary timing goes by video, only the audio loader potentially needs to wait\n // to load.\n if (this.loaderType_ !== 'audio') {\n return true;\n }\n\n var segmentInfo = this.pendingSegment_; // A fill buffer must have already run to establish a pending segment before there's\n // enough info to load.\n\n if (!segmentInfo) {\n return false;\n } // The first segment can and should be loaded immediately so that source buffers are\n // created together (before appending). Source buffer creation uses the presence of\n // audio and video data to determine whether to create audio/video source buffers, and\n // uses processed (transmuxed or parsed) media to determine the types required.\n\n\n if (!this.getCurrentMediaInfo_()) {\n return true;\n }\n\n if ( // Technically, instead of waiting to load a segment on timeline changes, a segment\n // can be requested and downloaded and only wait before it is transmuxed or parsed.\n // But in practice, there are a few reasons why it is better to wait until a loader\n // is ready to append that segment before requesting and downloading:\n //\n // 1. Because audio and main loaders cross discontinuities together, if this loader\n // is waiting for the other to catch up, then instead of requesting another\n // segment and using up more bandwidth, by not yet loading, more bandwidth is\n // allotted to the loader currently behind.\n // 2. media-segment-request doesn't have to have logic to consider whether a segment\n // is ready to be processed or not, isolating the queueing behavior to the loader.\n // 3. The audio loader bases some of its segment properties on timing information\n // provided by the main loader, meaning that, if the logic for waiting on\n // processing was in media-segment-request, then it would also need to know how\n // to re-generate the segment information after the main loader caught up.\n shouldWaitForTimelineChange({\n timelineChangeController: this.timelineChangeController_,\n currentTimeline: this.currentTimeline_,\n segmentTimeline: segmentInfo.timeline,\n loaderType: this.loaderType_,\n audioDisabled: this.audioDisabled_\n })) {\n return false;\n }\n\n return true;\n };\n\n _proto.getCurrentMediaInfo_ = function getCurrentMediaInfo_(segmentInfo) {\n if (segmentInfo === void 0) {\n segmentInfo = this.pendingSegment_;\n }\n\n return segmentInfo && segmentInfo.trackInfo || this.currentMediaInfo_;\n };\n\n _proto.getMediaInfo_ = function getMediaInfo_(segmentInfo) {\n if (segmentInfo === void 0) {\n segmentInfo = this.pendingSegment_;\n }\n\n return this.getCurrentMediaInfo_(segmentInfo) || this.startingMediaInfo_;\n };\n\n _proto.getPendingSegmentPlaylist = function getPendingSegmentPlaylist() {\n return this.pendingSegment_ ? this.pendingSegment_.playlist : null;\n };\n\n _proto.hasEnoughInfoToAppend_ = function hasEnoughInfoToAppend_() {\n if (!this.sourceUpdater_.ready()) {\n return false;\n } // If content needs to be removed or the loader is waiting on an append reattempt,\n // then no additional content should be appended until the prior append is resolved.\n\n\n if (this.waitingOnRemove_ || this.quotaExceededErrorRetryTimeout_) {\n return false;\n }\n\n var segmentInfo = this.pendingSegment_;\n var trackInfo = this.getCurrentMediaInfo_(); // no segment to append any data for or\n // we do not have information on this specific\n // segment yet\n\n if (!segmentInfo || !trackInfo) {\n return false;\n }\n\n var hasAudio = trackInfo.hasAudio,\n hasVideo = trackInfo.hasVideo,\n isMuxed = trackInfo.isMuxed;\n\n if (hasVideo && !segmentInfo.videoTimingInfo) {\n return false;\n } // muxed content only relies on video timing information for now.\n\n\n if (hasAudio && !this.audioDisabled_ && !isMuxed && !segmentInfo.audioTimingInfo) {\n return false;\n }\n\n if (shouldWaitForTimelineChange({\n timelineChangeController: this.timelineChangeController_,\n currentTimeline: this.currentTimeline_,\n segmentTimeline: segmentInfo.timeline,\n loaderType: this.loaderType_,\n audioDisabled: this.audioDisabled_\n })) {\n return false;\n }\n\n return true;\n };\n\n _proto.handleData_ = function handleData_(simpleSegment, result) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // If there's anything in the call queue, then this data came later and should be\n // executed after the calls currently queued.\n\n\n if (this.callQueue_.length || !this.hasEnoughInfoToAppend_()) {\n this.callQueue_.push(this.handleData_.bind(this, simpleSegment, result));\n return;\n }\n\n var segmentInfo = this.pendingSegment_; // update the time mapping so we can translate from display time to media time\n\n this.setTimeMapping_(segmentInfo.timeline); // for tracking overall stats\n\n this.updateMediaSecondsLoaded_(segmentInfo.part || segmentInfo.segment); // Note that the state isn't changed from loading to appending. This is because abort\n // logic may change behavior depending on the state, and changing state too early may\n // inflate our estimates of bandwidth. In the future this should be re-examined to\n // note more granular states.\n // don't process and append data if the mediaSource is closed\n\n if (this.mediaSource_.readyState === 'closed') {\n return;\n } // if this request included an initialization segment, save that data\n // to the initSegment cache\n\n\n if (simpleSegment.map) {\n simpleSegment.map = this.initSegmentForMap(simpleSegment.map, true); // move over init segment properties to media request\n\n segmentInfo.segment.map = simpleSegment.map;\n } // if this request included a segment key, save that data in the cache\n\n\n if (simpleSegment.key) {\n this.segmentKey(simpleSegment.key, true);\n }\n\n segmentInfo.isFmp4 = simpleSegment.isFmp4;\n segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n\n if (segmentInfo.isFmp4) {\n this.trigger('fmp4');\n segmentInfo.timingInfo.start = segmentInfo[timingInfoPropertyForMedia(result.type)].start;\n } else {\n var trackInfo = this.getCurrentMediaInfo_();\n var useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n var firstVideoFrameTimeForData;\n\n if (useVideoTimingInfo) {\n firstVideoFrameTimeForData = segmentInfo.videoTimingInfo.start;\n } // Segment loader knows more about segment timing than the transmuxer (in certain\n // aspects), so make any changes required for a more accurate start time.\n // Don't set the end time yet, as the segment may not be finished processing.\n\n\n segmentInfo.timingInfo.start = this.trueSegmentStart_({\n currentStart: segmentInfo.timingInfo.start,\n playlist: segmentInfo.playlist,\n mediaIndex: segmentInfo.mediaIndex,\n currentVideoTimestampOffset: this.sourceUpdater_.videoTimestampOffset(),\n useVideoTimingInfo: useVideoTimingInfo,\n firstVideoFrameTimeForData: firstVideoFrameTimeForData,\n videoTimingInfo: segmentInfo.videoTimingInfo,\n audioTimingInfo: segmentInfo.audioTimingInfo\n });\n } // Init segments for audio and video only need to be appended in certain cases. Now\n // that data is about to be appended, we can check the final cases to determine\n // whether we should append an init segment.\n\n\n this.updateAppendInitSegmentStatus(segmentInfo, result.type); // Timestamp offset should be updated once we get new data and have its timing info,\n // as we use the start of the segment to offset the best guess (playlist provided)\n // timestamp offset.\n\n this.updateSourceBufferTimestampOffset_(segmentInfo); // if this is a sync request we need to determine whether it should\n // be appended or not.\n\n if (segmentInfo.isSyncRequest) {\n // first save/update our timing info for this segment.\n // this is what allows us to choose an accurate segment\n // and the main reason we make a sync request.\n this.updateTimingInfoEnd_(segmentInfo);\n this.syncController_.saveSegmentTimingInfo({\n segmentInfo: segmentInfo,\n shouldSaveTimelineMapping: this.loaderType_ === 'main'\n });\n var next = this.chooseNextRequest_(); // If the sync request isn't the segment that would be requested next\n // after taking into account its timing info, do not append it.\n\n if (next.mediaIndex !== segmentInfo.mediaIndex || next.partIndex !== segmentInfo.partIndex) {\n this.logger_('sync segment was incorrect, not appending');\n return;\n } // otherwise append it like any other segment as our guess was correct.\n\n\n this.logger_('sync segment was correct, appending');\n } // Save some state so that in the future anything waiting on first append (and/or\n // timestamp offset(s)) can process immediately. While the extra state isn't optimal,\n // we need some notion of whether the timestamp offset or other relevant information\n // has had a chance to be set.\n\n\n segmentInfo.hasAppendedData_ = true; // Now that the timestamp offset should be set, we can append any waiting ID3 tags.\n\n this.processMetadataQueue_();\n this.appendData_(segmentInfo, result);\n };\n\n _proto.updateAppendInitSegmentStatus = function updateAppendInitSegmentStatus(segmentInfo, type) {\n // alt audio doesn't manage timestamp offset\n if (this.loaderType_ === 'main' && typeof segmentInfo.timestampOffset === 'number' && // in the case that we're handling partial data, we don't want to append an init\n // segment for each chunk\n !segmentInfo.changedTimestampOffset) {\n // if the timestamp offset changed, the timeline may have changed, so we have to re-\n // append init segments\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n }\n\n if (this.playlistOfLastInitSegment_[type] !== segmentInfo.playlist) {\n // make sure we append init segment on playlist changes, in case the media config\n // changed\n this.appendInitSegment_[type] = true;\n }\n };\n\n _proto.getInitSegmentAndUpdateState_ = function getInitSegmentAndUpdateState_(_ref4) {\n var type = _ref4.type,\n initSegment = _ref4.initSegment,\n map = _ref4.map,\n playlist = _ref4.playlist; // \"The EXT-X-MAP tag specifies how to obtain the Media Initialization Section\n // (Section 3) required to parse the applicable Media Segments. It applies to every\n // Media Segment that appears after it in the Playlist until the next EXT-X-MAP tag\n // or until the end of the playlist.\"\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.5\n\n if (map) {\n var id = initSegmentId(map);\n\n if (this.activeInitSegmentId_ === id) {\n // don't need to re-append the init segment if the ID matches\n return null;\n } // a map-specified init segment takes priority over any transmuxed (or otherwise\n // obtained) init segment\n //\n // this also caches the init segment for later use\n\n\n initSegment = this.initSegmentForMap(map, true).bytes;\n this.activeInitSegmentId_ = id;\n } // We used to always prepend init segments for video, however, that shouldn't be\n // necessary. Instead, we should only append on changes, similar to what we've always\n // done for audio. This is more important (though may not be that important) for\n // frame-by-frame appending for LHLS, simply because of the increased quantity of\n // appends.\n\n\n if (initSegment && this.appendInitSegment_[type]) {\n // Make sure we track the playlist that we last used for the init segment, so that\n // we can re-append the init segment in the event that we get data from a new\n // playlist. Discontinuities and track changes are handled in other sections.\n this.playlistOfLastInitSegment_[type] = playlist; // Disable future init segment appends for this type. Until a change is necessary.\n\n this.appendInitSegment_[type] = false; // we need to clear out the fmp4 active init segment id, since\n // we are appending the muxer init segment\n\n this.activeInitSegmentId_ = null;\n return initSegment;\n }\n\n return null;\n };\n\n _proto.handleQuotaExceededError_ = function handleQuotaExceededError_(_ref5, error) {\n var _this3 = this;\n\n var segmentInfo = _ref5.segmentInfo,\n type = _ref5.type,\n bytes = _ref5.bytes;\n var audioBuffered = this.sourceUpdater_.audioBuffered();\n var videoBuffered = this.sourceUpdater_.videoBuffered(); // For now we're ignoring any notion of gaps in the buffer, but they, in theory,\n // should be cleared out during the buffer removals. However, log in case it helps\n // debug.\n\n if (audioBuffered.length > 1) {\n this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: ' + timeRangesToArray(audioBuffered).join(', '));\n }\n\n if (videoBuffered.length > 1) {\n this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: ' + timeRangesToArray(videoBuffered).join(', '));\n }\n\n var audioBufferStart = audioBuffered.length ? audioBuffered.start(0) : 0;\n var audioBufferEnd = audioBuffered.length ? audioBuffered.end(audioBuffered.length - 1) : 0;\n var videoBufferStart = videoBuffered.length ? videoBuffered.start(0) : 0;\n var videoBufferEnd = videoBuffered.length ? videoBuffered.end(videoBuffered.length - 1) : 0;\n\n if (audioBufferEnd - audioBufferStart <= MIN_BACK_BUFFER && videoBufferEnd - videoBufferStart <= MIN_BACK_BUFFER) {\n // Can't remove enough buffer to make room for new segment (or the browser doesn't\n // allow for appends of segments this size). In the future, it may be possible to\n // split up the segment and append in pieces, but for now, error out this playlist\n // in an attempt to switch to a more manageable rendition.\n this.logger_('On QUOTA_EXCEEDED_ERR, single segment too large to append to ' + 'buffer, triggering an error. ' + (\"Appended byte length: \" + bytes.byteLength + \", \") + (\"audio buffer: \" + timeRangesToArray(audioBuffered).join(', ') + \", \") + (\"video buffer: \" + timeRangesToArray(videoBuffered).join(', ') + \", \"));\n this.error({\n message: 'Quota exceeded error with append of a single segment of content',\n excludeUntil: Infinity\n });\n this.trigger('error');\n return;\n } // To try to resolve the quota exceeded error, clear back buffer and retry. This means\n // that the segment-loader should block on future events until this one is handled, so\n // that it doesn't keep moving onto further segments. Adding the call to the call\n // queue will prevent further appends until waitingOnRemove_ and\n // quotaExceededErrorRetryTimeout_ are cleared.\n //\n // Note that this will only block the current loader. In the case of demuxed content,\n // the other load may keep filling as fast as possible. In practice, this should be\n // OK, as it is a rare case when either audio has a high enough bitrate to fill up a\n // source buffer, or video fills without enough room for audio to append (and without\n // the availability of clearing out seconds of back buffer to make room for audio).\n // But it might still be good to handle this case in the future as a TODO.\n\n\n this.waitingOnRemove_ = true;\n this.callQueue_.push(this.appendToSourceBuffer_.bind(this, {\n segmentInfo: segmentInfo,\n type: type,\n bytes: bytes\n }));\n var currentTime = this.currentTime_(); // Try to remove as much audio and video as possible to make room for new content\n // before retrying.\n\n var timeToRemoveUntil = currentTime - MIN_BACK_BUFFER;\n this.logger_(\"On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to \" + timeToRemoveUntil);\n this.remove(0, timeToRemoveUntil, function () {\n _this3.logger_(\"On QUOTA_EXCEEDED_ERR, retrying append in \" + MIN_BACK_BUFFER + \"s\");\n\n _this3.waitingOnRemove_ = false; // wait the length of time alotted in the back buffer to prevent wasted\n // attempts (since we can't clear less than the minimum)\n\n _this3.quotaExceededErrorRetryTimeout_ = window$1.setTimeout(function () {\n _this3.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue');\n\n _this3.quotaExceededErrorRetryTimeout_ = null;\n\n _this3.processCallQueue_();\n }, MIN_BACK_BUFFER * 1000);\n }, true);\n };\n\n _proto.handleAppendError_ = function handleAppendError_(_ref6, error) {\n var segmentInfo = _ref6.segmentInfo,\n type = _ref6.type,\n bytes = _ref6.bytes; // if there's no error, nothing to do\n\n if (!error) {\n return;\n }\n\n if (error.code === QUOTA_EXCEEDED_ERR) {\n this.handleQuotaExceededError_({\n segmentInfo: segmentInfo,\n type: type,\n bytes: bytes\n }); // A quota exceeded error should be recoverable with a future re-append, so no need\n // to trigger an append error.\n\n return;\n }\n\n this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error);\n this.error(type + \" append of \" + bytes.length + \"b failed for segment \" + (\"#\" + segmentInfo.mediaIndex + \" in playlist \" + segmentInfo.playlist.id)); // If an append errors, we often can't recover.\n // (see https://w3c.github.io/media-source/#sourcebuffer-append-error).\n //\n // Trigger a special error so that it can be handled separately from normal,\n // recoverable errors.\n\n this.trigger('appenderror');\n };\n\n _proto.appendToSourceBuffer_ = function appendToSourceBuffer_(_ref7) {\n var segmentInfo = _ref7.segmentInfo,\n type = _ref7.type,\n initSegment = _ref7.initSegment,\n data = _ref7.data,\n bytes = _ref7.bytes; // If this is a re-append, bytes were already created and don't need to be recreated\n\n if (!bytes) {\n var segments = [data];\n var byteLength = data.byteLength;\n\n if (initSegment) {\n // if the media initialization segment is changing, append it before the content\n // segment\n segments.unshift(initSegment);\n byteLength += initSegment.byteLength;\n } // Technically we should be OK appending the init segment separately, however, we\n // haven't yet tested that, and prepending is how we have always done things.\n\n\n bytes = concatSegments({\n bytes: byteLength,\n segments: segments\n });\n }\n\n this.sourceUpdater_.appendBuffer({\n segmentInfo: segmentInfo,\n type: type,\n bytes: bytes\n }, this.handleAppendError_.bind(this, {\n segmentInfo: segmentInfo,\n type: type,\n bytes: bytes\n }));\n };\n\n _proto.handleSegmentTimingInfo_ = function handleSegmentTimingInfo_(type, requestId, segmentTimingInfo) {\n if (!this.pendingSegment_ || requestId !== this.pendingSegment_.requestId) {\n return;\n }\n\n var segment = this.pendingSegment_.segment;\n var timingInfoProperty = type + \"TimingInfo\";\n\n if (!segment[timingInfoProperty]) {\n segment[timingInfoProperty] = {};\n }\n\n segment[timingInfoProperty].transmuxerPrependedSeconds = segmentTimingInfo.prependedContentDuration || 0;\n segment[timingInfoProperty].transmuxedPresentationStart = segmentTimingInfo.start.presentation;\n segment[timingInfoProperty].transmuxedDecodeStart = segmentTimingInfo.start.decode;\n segment[timingInfoProperty].transmuxedPresentationEnd = segmentTimingInfo.end.presentation;\n segment[timingInfoProperty].transmuxedDecodeEnd = segmentTimingInfo.end.decode; // mainly used as a reference for debugging\n\n segment[timingInfoProperty].baseMediaDecodeTime = segmentTimingInfo.baseMediaDecodeTime;\n };\n\n _proto.appendData_ = function appendData_(segmentInfo, result) {\n var type = result.type,\n data = result.data;\n\n if (!data || !data.byteLength) {\n return;\n }\n\n if (type === 'audio' && this.audioDisabled_) {\n return;\n }\n\n var initSegment = this.getInitSegmentAndUpdateState_({\n type: type,\n initSegment: result.initSegment,\n playlist: segmentInfo.playlist,\n map: segmentInfo.isFmp4 ? segmentInfo.segment.map : null\n });\n this.appendToSourceBuffer_({\n segmentInfo: segmentInfo,\n type: type,\n initSegment: initSegment,\n data: data\n });\n }\n /**\n * load a specific segment from a request into the buffer\n *\n * @private\n */\n ;\n\n _proto.loadSegment_ = function loadSegment_(segmentInfo) {\n var _this4 = this;\n\n this.state = 'WAITING';\n this.pendingSegment_ = segmentInfo;\n this.trimBackBuffer_(segmentInfo);\n\n if (typeof segmentInfo.timestampOffset === 'number') {\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearAllMp4Captions'\n });\n }\n }\n\n if (!this.hasEnoughInfoToLoad_()) {\n this.loadQueue_.push(function () {\n // regenerate the audioAppendStart, timestampOffset, etc as they\n // may have changed since this function was added to the queue.\n var options = _extends({}, segmentInfo, {\n forceTimestampOffset: true\n });\n\n _extends(segmentInfo, _this4.generateSegmentInfo_(options));\n\n _this4.isPendingTimestampOffset_ = false;\n\n _this4.updateTransmuxerAndRequestSegment_(segmentInfo);\n });\n return;\n }\n\n this.updateTransmuxerAndRequestSegment_(segmentInfo);\n };\n\n _proto.updateTransmuxerAndRequestSegment_ = function updateTransmuxerAndRequestSegment_(segmentInfo) {\n var _this5 = this; // We'll update the source buffer's timestamp offset once we have transmuxed data, but\n // the transmuxer still needs to be updated before then.\n //\n // Even though keepOriginalTimestamps is set to true for the transmuxer, timestamp\n // offset must be passed to the transmuxer for stream correcting adjustments.\n\n\n if (this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)) {\n this.gopBuffer_.length = 0; // gopsToAlignWith was set before the GOP buffer was cleared\n\n segmentInfo.gopsToAlignWith = [];\n this.timeMapping_ = 0; // reset values in the transmuxer since a discontinuity should start fresh\n\n this.transmuxer_.postMessage({\n action: 'reset'\n });\n this.transmuxer_.postMessage({\n action: 'setTimestampOffset',\n timestampOffset: segmentInfo.timestampOffset\n });\n }\n\n var simpleSegment = this.createSimplifiedSegmentObj_(segmentInfo);\n var isEndOfStream = this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex);\n var isWalkingForward = this.mediaIndex !== null;\n var isDiscontinuity = segmentInfo.timeline !== this.currentTimeline_ && // currentTimeline starts at -1, so we shouldn't end the timeline switching to 0,\n // the first timeline\n segmentInfo.timeline > 0;\n var isEndOfTimeline = isEndOfStream || isWalkingForward && isDiscontinuity;\n this.logger_(\"Requesting \" + segmentInfoString(segmentInfo)); // If there's an init segment associated with this segment, but it is not cached (identified by a lack of bytes),\n // then this init segment has never been seen before and should be appended.\n //\n // At this point the content type (audio/video or both) is not yet known, but it should be safe to set\n // both to true and leave the decision of whether to append the init segment to append time.\n\n if (simpleSegment.map && !simpleSegment.map.bytes) {\n this.logger_('going to request init segment.');\n this.appendInitSegment_ = {\n video: true,\n audio: true\n };\n }\n\n segmentInfo.abortRequests = mediaSegmentRequest({\n xhr: this.vhs_.xhr,\n xhrOptions: this.xhrOptions_,\n decryptionWorker: this.decrypter_,\n segment: simpleSegment,\n abortFn: this.handleAbort_.bind(this, segmentInfo),\n progressFn: this.handleProgress_.bind(this),\n trackInfoFn: this.handleTrackInfo_.bind(this),\n timingInfoFn: this.handleTimingInfo_.bind(this),\n videoSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'video', segmentInfo.requestId),\n audioSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'audio', segmentInfo.requestId),\n captionsFn: this.handleCaptions_.bind(this),\n isEndOfTimeline: isEndOfTimeline,\n endedTimelineFn: function endedTimelineFn() {\n _this5.logger_('received endedtimeline callback');\n },\n id3Fn: this.handleId3_.bind(this),\n dataFn: this.handleData_.bind(this),\n doneFn: this.segmentRequestFinished_.bind(this),\n onTransmuxerLog: function onTransmuxerLog(_ref8) {\n var message = _ref8.message,\n level = _ref8.level,\n stream = _ref8.stream;\n\n _this5.logger_(segmentInfoString(segmentInfo) + \" logged from transmuxer stream \" + stream + \" as a \" + level + \": \" + message);\n }\n });\n }\n /**\n * trim the back buffer so that we don't have too much data\n * in the source buffer\n *\n * @private\n *\n * @param {Object} segmentInfo - the current segment\n */\n ;\n\n _proto.trimBackBuffer_ = function trimBackBuffer_(segmentInfo) {\n var removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of\n // buffer and a very conservative \"garbage collector\"\n // We manually clear out the old buffer to ensure\n // we don't trigger the QuotaExceeded error\n // on the source buffer during subsequent appends\n\n if (removeToTime > 0) {\n this.remove(0, removeToTime);\n }\n }\n /**\n * created a simplified copy of the segment object with just the\n * information necessary to perform the XHR and decryption\n *\n * @private\n *\n * @param {Object} segmentInfo - the current segment\n * @return {Object} a simplified segment object copy\n */\n ;\n\n _proto.createSimplifiedSegmentObj_ = function createSimplifiedSegmentObj_(segmentInfo) {\n var segment = segmentInfo.segment;\n var part = segmentInfo.part;\n var simpleSegment = {\n resolvedUri: part ? part.resolvedUri : segment.resolvedUri,\n byterange: part ? part.byterange : segment.byterange,\n requestId: segmentInfo.requestId,\n transmuxer: segmentInfo.transmuxer,\n audioAppendStart: segmentInfo.audioAppendStart,\n gopsToAlignWith: segmentInfo.gopsToAlignWith,\n part: segmentInfo.part\n };\n var previousSegment = segmentInfo.playlist.segments[segmentInfo.mediaIndex - 1];\n\n if (previousSegment && previousSegment.timeline === segment.timeline) {\n // The baseStartTime of a segment is used to handle rollover when probing the TS\n // segment to retrieve timing information. Since the probe only looks at the media's\n // times (e.g., PTS and DTS values of the segment), and doesn't consider the\n // player's time (e.g., player.currentTime()), baseStartTime should reflect the\n // media time as well. transmuxedDecodeEnd represents the end time of a segment, in\n // seconds of media time, so should be used here. The previous segment is used since\n // the end of the previous segment should represent the beginning of the current\n // segment, so long as they are on the same timeline.\n if (previousSegment.videoTimingInfo) {\n simpleSegment.baseStartTime = previousSegment.videoTimingInfo.transmuxedDecodeEnd;\n } else if (previousSegment.audioTimingInfo) {\n simpleSegment.baseStartTime = previousSegment.audioTimingInfo.transmuxedDecodeEnd;\n }\n }\n\n if (segment.key) {\n // if the media sequence is greater than 2^32, the IV will be incorrect\n // assuming 10s segments, that would be about 1300 years\n var iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);\n simpleSegment.key = this.segmentKey(segment.key);\n simpleSegment.key.iv = iv;\n }\n\n if (segment.map) {\n simpleSegment.map = this.initSegmentForMap(segment.map);\n }\n\n return simpleSegment;\n };\n\n _proto.saveTransferStats_ = function saveTransferStats_(stats) {\n // every request counts as a media request even if it has been aborted\n // or canceled due to a timeout\n this.mediaRequests += 1;\n\n if (stats) {\n this.mediaBytesTransferred += stats.bytesReceived;\n this.mediaTransferDuration += stats.roundTripTime;\n }\n };\n\n _proto.saveBandwidthRelatedStats_ = function saveBandwidthRelatedStats_(duration, stats) {\n // byteLength will be used for throughput, and should be based on bytes receieved,\n // which we only know at the end of the request and should reflect total bytes\n // downloaded rather than just bytes processed from components of the segment\n this.pendingSegment_.byteLength = stats.bytesReceived;\n\n if (duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n this.logger_(\"Ignoring segment's bandwidth because its duration of \" + duration + (\" is less than the min to record \" + MIN_SEGMENT_DURATION_TO_SAVE_STATS));\n return;\n }\n\n this.bandwidth = stats.bandwidth;\n this.roundTrip = stats.roundTripTime;\n };\n\n _proto.handleTimeout_ = function handleTimeout_() {\n // although the VTT segment loader bandwidth isn't really used, it's good to\n // maintain functinality between segment loaders\n this.mediaRequestsTimedout += 1;\n this.bandwidth = 1;\n this.roundTrip = NaN;\n this.trigger('bandwidthupdate');\n this.trigger('timeout');\n }\n /**\n * Handle the callback from the segmentRequest function and set the\n * associated SegmentLoader state and errors if necessary\n *\n * @private\n */\n ;\n\n _proto.segmentRequestFinished_ = function segmentRequestFinished_(error, simpleSegment, result) {\n // TODO handle special cases, e.g., muxed audio/video but only audio in the segment\n // check the call queue directly since this function doesn't need to deal with any\n // data, and can continue even if the source buffers are not set up and we didn't get\n // any data from the segment\n if (this.callQueue_.length) {\n this.callQueue_.push(this.segmentRequestFinished_.bind(this, error, simpleSegment, result));\n return;\n }\n\n this.saveTransferStats_(simpleSegment.stats); // The request was aborted and the SegmentLoader has already been reset\n\n if (!this.pendingSegment_) {\n return;\n } // the request was aborted and the SegmentLoader has already started\n // another request. this can happen when the timeout for an aborted\n // request triggers due to a limitation in the XHR library\n // do not count this as any sort of request or we risk double-counting\n\n\n if (simpleSegment.requestId !== this.pendingSegment_.requestId) {\n return;\n } // an error occurred from the active pendingSegment_ so reset everything\n\n\n if (error) {\n this.pendingSegment_ = null;\n this.state = 'READY'; // aborts are not a true error condition and nothing corrective needs to be done\n\n if (error.code === REQUEST_ERRORS.ABORTED) {\n return;\n }\n\n this.pause(); // the error is really just that at least one of the requests timed-out\n // set the bandwidth to a very low value and trigger an ABR switch to\n // take emergency action\n\n if (error.code === REQUEST_ERRORS.TIMEOUT) {\n this.handleTimeout_();\n return;\n } // if control-flow has arrived here, then the error is real\n // emit an error event to blacklist the current playlist\n\n\n this.mediaRequestsErrored += 1;\n this.error(error);\n this.trigger('error');\n return;\n }\n\n var segmentInfo = this.pendingSegment_; // the response was a success so set any bandwidth stats the request\n // generated for ABR purposes\n\n this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats);\n segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;\n\n if (result.gopInfo) {\n this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, result.gopInfo, this.safeAppend_);\n } // Although we may have already started appending on progress, we shouldn't switch the\n // state away from loading until we are officially done loading the segment data.\n\n\n this.state = 'APPENDING'; // used for testing\n\n this.trigger('appending');\n this.waitForAppendsToComplete_(segmentInfo);\n };\n\n _proto.setTimeMapping_ = function setTimeMapping_(timeline) {\n var timelineMapping = this.syncController_.mappingForTimeline(timeline);\n\n if (timelineMapping !== null) {\n this.timeMapping_ = timelineMapping;\n }\n };\n\n _proto.updateMediaSecondsLoaded_ = function updateMediaSecondsLoaded_(segment) {\n if (typeof segment.start === 'number' && typeof segment.end === 'number') {\n this.mediaSecondsLoaded += segment.end - segment.start;\n } else {\n this.mediaSecondsLoaded += segment.duration;\n }\n };\n\n _proto.shouldUpdateTransmuxerTimestampOffset_ = function shouldUpdateTransmuxerTimestampOffset_(timestampOffset) {\n if (timestampOffset === null) {\n return false;\n } // note that we're potentially using the same timestamp offset for both video and\n // audio\n\n\n if (this.loaderType_ === 'main' && timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n return true;\n }\n\n if (!this.audioDisabled_ && timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n return true;\n }\n\n return false;\n };\n\n _proto.trueSegmentStart_ = function trueSegmentStart_(_ref9) {\n var currentStart = _ref9.currentStart,\n playlist = _ref9.playlist,\n mediaIndex = _ref9.mediaIndex,\n firstVideoFrameTimeForData = _ref9.firstVideoFrameTimeForData,\n currentVideoTimestampOffset = _ref9.currentVideoTimestampOffset,\n useVideoTimingInfo = _ref9.useVideoTimingInfo,\n videoTimingInfo = _ref9.videoTimingInfo,\n audioTimingInfo = _ref9.audioTimingInfo;\n\n if (typeof currentStart !== 'undefined') {\n // if start was set once, keep using it\n return currentStart;\n }\n\n if (!useVideoTimingInfo) {\n return audioTimingInfo.start;\n }\n\n var previousSegment = playlist.segments[mediaIndex - 1]; // The start of a segment should be the start of the first full frame contained\n // within that segment. Since the transmuxer maintains a cache of incomplete data\n // from and/or the last frame seen, the start time may reflect a frame that starts\n // in the previous segment. Check for that case and ensure the start time is\n // accurate for the segment.\n\n if (mediaIndex === 0 || !previousSegment || typeof previousSegment.start === 'undefined' || previousSegment.end !== firstVideoFrameTimeForData + currentVideoTimestampOffset) {\n return firstVideoFrameTimeForData;\n }\n\n return videoTimingInfo.start;\n };\n\n _proto.waitForAppendsToComplete_ = function waitForAppendsToComplete_(segmentInfo) {\n var trackInfo = this.getCurrentMediaInfo_(segmentInfo);\n\n if (!trackInfo) {\n this.error({\n message: 'No starting media returned, likely due to an unsupported media format.',\n blacklistDuration: Infinity\n });\n this.trigger('error');\n return;\n } // Although transmuxing is done, appends may not yet be finished. Throw a marker\n // on each queue this loader is responsible for to ensure that the appends are\n // complete.\n\n\n var hasAudio = trackInfo.hasAudio,\n hasVideo = trackInfo.hasVideo,\n isMuxed = trackInfo.isMuxed;\n var waitForVideo = this.loaderType_ === 'main' && hasVideo;\n var waitForAudio = !this.audioDisabled_ && hasAudio && !isMuxed;\n segmentInfo.waitingOnAppends = 0; // segments with no data\n\n if (!segmentInfo.hasAppendedData_) {\n if (!segmentInfo.timingInfo && typeof segmentInfo.timestampOffset === 'number') {\n // When there's no audio or video data in the segment, there's no audio or video\n // timing information.\n //\n // If there's no audio or video timing information, then the timestamp offset\n // can't be adjusted to the appropriate value for the transmuxer and source\n // buffers.\n //\n // Therefore, the next segment should be used to set the timestamp offset.\n this.isPendingTimestampOffset_ = true;\n } // override settings for metadata only segments\n\n\n segmentInfo.timingInfo = {\n start: 0\n };\n segmentInfo.waitingOnAppends++;\n\n if (!this.isPendingTimestampOffset_) {\n // update the timestampoffset\n this.updateSourceBufferTimestampOffset_(segmentInfo); // make sure the metadata queue is processed even though we have\n // no video/audio data.\n\n this.processMetadataQueue_();\n } // append is \"done\" instantly with no data.\n\n\n this.checkAppendsDone_(segmentInfo);\n return;\n } // Since source updater could call back synchronously, do the increments first.\n\n\n if (waitForVideo) {\n segmentInfo.waitingOnAppends++;\n }\n\n if (waitForAudio) {\n segmentInfo.waitingOnAppends++;\n }\n\n if (waitForVideo) {\n this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n }\n\n if (waitForAudio) {\n this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n }\n };\n\n _proto.checkAppendsDone_ = function checkAppendsDone_(segmentInfo) {\n if (this.checkForAbort_(segmentInfo.requestId)) {\n return;\n }\n\n segmentInfo.waitingOnAppends--;\n\n if (segmentInfo.waitingOnAppends === 0) {\n this.handleAppendsDone_();\n }\n };\n\n _proto.checkForIllegalMediaSwitch = function checkForIllegalMediaSwitch(trackInfo) {\n var illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.getCurrentMediaInfo_(), trackInfo);\n\n if (illegalMediaSwitchError) {\n this.error({\n message: illegalMediaSwitchError,\n blacklistDuration: Infinity\n });\n this.trigger('error');\n return true;\n }\n\n return false;\n };\n\n _proto.updateSourceBufferTimestampOffset_ = function updateSourceBufferTimestampOffset_(segmentInfo) {\n if (segmentInfo.timestampOffset === null || // we don't yet have the start for whatever media type (video or audio) has\n // priority, timing-wise, so we must wait\n typeof segmentInfo.timingInfo.start !== 'number' || // already updated the timestamp offset for this segment\n segmentInfo.changedTimestampOffset || // the alt audio loader should not be responsible for setting the timestamp offset\n this.loaderType_ !== 'main') {\n return;\n }\n\n var didChange = false; // Primary timing goes by video, and audio is trimmed in the transmuxer, meaning that\n // the timing info here comes from video. In the event that the audio is longer than\n // the video, this will trim the start of the audio.\n // This also trims any offset from 0 at the beginning of the media\n\n segmentInfo.timestampOffset -= this.getSegmentStartTimeForTimestampOffsetCalculation_({\n videoTimingInfo: segmentInfo.segment.videoTimingInfo,\n audioTimingInfo: segmentInfo.segment.audioTimingInfo,\n timingInfo: segmentInfo.timingInfo\n }); // In the event that there are part segment downloads, each will try to update the\n // timestamp offset. Retaining this bit of state prevents us from updating in the\n // future (within the same segment), however, there may be a better way to handle it.\n\n segmentInfo.changedTimestampOffset = true;\n\n if (segmentInfo.timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset);\n didChange = true;\n }\n\n if (segmentInfo.timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset);\n didChange = true;\n }\n\n if (didChange) {\n this.trigger('timestampoffset');\n }\n };\n\n _proto.getSegmentStartTimeForTimestampOffsetCalculation_ = function getSegmentStartTimeForTimestampOffsetCalculation_(_ref10) {\n var videoTimingInfo = _ref10.videoTimingInfo,\n audioTimingInfo = _ref10.audioTimingInfo,\n timingInfo = _ref10.timingInfo;\n\n if (!this.useDtsForTimestampOffset_) {\n return timingInfo.start;\n }\n\n if (videoTimingInfo && typeof videoTimingInfo.transmuxedDecodeStart === 'number') {\n return videoTimingInfo.transmuxedDecodeStart;\n } // handle audio only\n\n\n if (audioTimingInfo && typeof audioTimingInfo.transmuxedDecodeStart === 'number') {\n return audioTimingInfo.transmuxedDecodeStart;\n } // handle content not transmuxed (e.g., MP4)\n\n\n return timingInfo.start;\n };\n\n _proto.updateTimingInfoEnd_ = function updateTimingInfoEnd_(segmentInfo) {\n segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n var trackInfo = this.getMediaInfo_();\n var useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n var prioritizedTimingInfo = useVideoTimingInfo && segmentInfo.videoTimingInfo ? segmentInfo.videoTimingInfo : segmentInfo.audioTimingInfo;\n\n if (!prioritizedTimingInfo) {\n return;\n }\n\n segmentInfo.timingInfo.end = typeof prioritizedTimingInfo.end === 'number' ? // End time may not exist in a case where we aren't parsing the full segment (one\n // current example is the case of fmp4), so use the rough duration to calculate an\n // end time.\n prioritizedTimingInfo.end : prioritizedTimingInfo.start + segmentInfo.duration;\n }\n /**\n * callback to run when appendBuffer is finished. detects if we are\n * in a good state to do things with the data we got, or if we need\n * to wait for more\n *\n * @private\n */\n ;\n\n _proto.handleAppendsDone_ = function handleAppendsDone_() {\n // appendsdone can cause an abort\n if (this.pendingSegment_) {\n this.trigger('appendsdone');\n }\n\n if (!this.pendingSegment_) {\n this.state = 'READY'; // TODO should this move into this.checkForAbort to speed up requests post abort in\n // all appending cases?\n\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n\n return;\n }\n\n var segmentInfo = this.pendingSegment_; // Now that the end of the segment has been reached, we can set the end time. It's\n // best to wait until all appends are done so we're sure that the primary media is\n // finished (and we have its end time).\n\n this.updateTimingInfoEnd_(segmentInfo);\n\n if (this.shouldSaveSegmentTimingInfo_) {\n // Timeline mappings should only be saved for the main loader. This is for multiple\n // reasons:\n //\n // 1) Only one mapping is saved per timeline, meaning that if both the audio loader\n // and the main loader try to save the timeline mapping, whichever comes later\n // will overwrite the first. In theory this is OK, as the mappings should be the\n // same, however, it breaks for (2)\n // 2) In the event of a live stream, the initial live point will make for a somewhat\n // arbitrary mapping. If audio and video streams are not perfectly in-sync, then\n // the mapping will be off for one of the streams, dependent on which one was\n // first saved (see (1)).\n // 3) Primary timing goes by video in VHS, so the mapping should be video.\n //\n // Since the audio loader will wait for the main loader to load the first segment,\n // the main loader will save the first timeline mapping, and ensure that there won't\n // be a case where audio loads two segments without saving a mapping (thus leading\n // to missing segment timing info).\n this.syncController_.saveSegmentTimingInfo({\n segmentInfo: segmentInfo,\n shouldSaveTimelineMapping: this.loaderType_ === 'main'\n });\n }\n\n var segmentDurationMessage = getTroublesomeSegmentDurationMessage(segmentInfo, this.sourceType_);\n\n if (segmentDurationMessage) {\n if (segmentDurationMessage.severity === 'warn') {\n videojs.log.warn(segmentDurationMessage.message);\n } else {\n this.logger_(segmentDurationMessage.message);\n }\n }\n\n this.recordThroughput_(segmentInfo);\n this.pendingSegment_ = null;\n this.state = 'READY';\n\n if (segmentInfo.isSyncRequest) {\n this.trigger('syncinfoupdate'); // if the sync request was not appended\n // then it was not the correct segment.\n // throw it away and use the data it gave us\n // to get the correct one.\n\n if (!segmentInfo.hasAppendedData_) {\n this.logger_(\"Throwing away un-appended sync request \" + segmentInfoString(segmentInfo));\n return;\n }\n }\n\n this.logger_(\"Appended \" + segmentInfoString(segmentInfo));\n this.addSegmentMetadataCue_(segmentInfo);\n this.fetchAtBuffer_ = true;\n\n if (this.currentTimeline_ !== segmentInfo.timeline) {\n this.timelineChangeController_.lastTimelineChange({\n type: this.loaderType_,\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n }); // If audio is not disabled, the main segment loader is responsible for updating\n // the audio timeline as well. If the content is video only, this won't have any\n // impact.\n\n if (this.loaderType_ === 'main' && !this.audioDisabled_) {\n this.timelineChangeController_.lastTimelineChange({\n type: 'audio',\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n });\n }\n }\n\n this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before\n // the following conditional otherwise it may consider this a bad \"guess\"\n // and attempt to resync when the post-update seekable window and live\n // point would mean that this was the perfect segment to fetch\n\n this.trigger('syncinfoupdate');\n var segment = segmentInfo.segment;\n var part = segmentInfo.part;\n var badSegmentGuess = segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3;\n var badPartGuess = part && part.end && this.currentTime_() - part.end > segmentInfo.playlist.partTargetDuration * 3; // If we previously appended a segment/part that ends more than 3 part/targetDurations before\n // the currentTime_ that means that our conservative guess was too conservative.\n // In that case, reset the loader state so that we try to use any information gained\n // from the previous request to create a new, more accurate, sync-point.\n\n if (badSegmentGuess || badPartGuess) {\n this.logger_(\"bad \" + (badSegmentGuess ? 'segment' : 'part') + \" \" + segmentInfoString(segmentInfo));\n this.resetEverything();\n return;\n }\n\n var isWalkingForward = this.mediaIndex !== null; // Don't do a rendition switch unless we have enough time to get a sync segment\n // and conservatively guess\n\n if (isWalkingForward) {\n this.trigger('bandwidthupdate');\n }\n\n this.trigger('progress');\n this.mediaIndex = segmentInfo.mediaIndex;\n this.partIndex = segmentInfo.partIndex; // any time an update finishes and the last segment is in the\n // buffer, end the stream. this ensures the \"ended\" event will\n // fire if playback reaches that point.\n\n if (this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex)) {\n this.endOfStream();\n } // used for testing\n\n\n this.trigger('appended');\n\n if (segmentInfo.hasAppendedData_) {\n this.mediaAppends++;\n }\n\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n }\n /**\n * Records the current throughput of the decrypt, transmux, and append\n * portion of the semgment pipeline. `throughput.rate` is a the cumulative\n * moving average of the throughput. `throughput.count` is the number of\n * data points in the average.\n *\n * @private\n * @param {Object} segmentInfo the object returned by loadSegment\n */\n ;\n\n _proto.recordThroughput_ = function recordThroughput_(segmentInfo) {\n if (segmentInfo.duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n this.logger_(\"Ignoring segment's throughput because its duration of \" + segmentInfo.duration + (\" is less than the min to record \" + MIN_SEGMENT_DURATION_TO_SAVE_STATS));\n return;\n }\n\n var rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide\n // by zero in the case where the throughput is ridiculously high\n\n var segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second\n\n var segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:\n // newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)\n\n this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;\n }\n /**\n * Adds a cue to the segment-metadata track with some metadata information about the\n * segment\n *\n * @private\n * @param {Object} segmentInfo\n * the object returned by loadSegment\n * @method addSegmentMetadataCue_\n */\n ;\n\n _proto.addSegmentMetadataCue_ = function addSegmentMetadataCue_(segmentInfo) {\n if (!this.segmentMetadataTrack_) {\n return;\n }\n\n var segment = segmentInfo.segment;\n var start = segment.start;\n var end = segment.end; // Do not try adding the cue if the start and end times are invalid.\n\n if (!finite(start) || !finite(end)) {\n return;\n }\n\n removeCuesFromTrack(start, end, this.segmentMetadataTrack_);\n var Cue = window$1.WebKitDataCue || window$1.VTTCue;\n var value = {\n custom: segment.custom,\n dateTimeObject: segment.dateTimeObject,\n dateTimeString: segment.dateTimeString,\n bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,\n resolution: segmentInfo.playlist.attributes.RESOLUTION,\n codecs: segmentInfo.playlist.attributes.CODECS,\n byteLength: segmentInfo.byteLength,\n uri: segmentInfo.uri,\n timeline: segmentInfo.timeline,\n playlist: segmentInfo.playlist.id,\n start: start,\n end: end\n };\n var data = JSON.stringify(value);\n var cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between\n // the differences of WebKitDataCue in safari and VTTCue in other browsers\n\n cue.value = value;\n this.segmentMetadataTrack_.addCue(cue);\n };\n\n return SegmentLoader;\n}(videojs.EventTarget);\n\nfunction noop() {}\n\nvar toTitleCase = function toTitleCase(string) {\n if (typeof string !== 'string') {\n return string;\n }\n\n return string.replace(/./, function (w) {\n return w.toUpperCase();\n });\n};\n\nvar bufferTypes = ['video', 'audio'];\n\nvar _updating = function updating(type, sourceUpdater) {\n var sourceBuffer = sourceUpdater[type + \"Buffer\"];\n return sourceBuffer && sourceBuffer.updating || sourceUpdater.queuePending[type];\n};\n\nvar nextQueueIndexOfType = function nextQueueIndexOfType(type, queue) {\n for (var i = 0; i < queue.length; i++) {\n var queueEntry = queue[i];\n\n if (queueEntry.type === 'mediaSource') {\n // If the next entry is a media source entry (uses multiple source buffers), block\n // processing to allow it to go through first.\n return null;\n }\n\n if (queueEntry.type === type) {\n return i;\n }\n }\n\n return null;\n};\n\nvar shiftQueue = function shiftQueue(type, sourceUpdater) {\n if (sourceUpdater.queue.length === 0) {\n return;\n }\n\n var queueIndex = 0;\n var queueEntry = sourceUpdater.queue[queueIndex];\n\n if (queueEntry.type === 'mediaSource') {\n if (!sourceUpdater.updating() && sourceUpdater.mediaSource.readyState !== 'closed') {\n sourceUpdater.queue.shift();\n queueEntry.action(sourceUpdater);\n\n if (queueEntry.doneFn) {\n queueEntry.doneFn();\n } // Only specific source buffer actions must wait for async updateend events. Media\n // Source actions process synchronously. Therefore, both audio and video source\n // buffers are now clear to process the next queue entries.\n\n\n shiftQueue('audio', sourceUpdater);\n shiftQueue('video', sourceUpdater);\n } // Media Source actions require both source buffers, so if the media source action\n // couldn't process yet (because one or both source buffers are busy), block other\n // queue actions until both are available and the media source action can process.\n\n\n return;\n }\n\n if (type === 'mediaSource') {\n // If the queue was shifted by a media source action (this happens when pushing a\n // media source action onto the queue), then it wasn't from an updateend event from an\n // audio or video source buffer, so there's no change from previous state, and no\n // processing should be done.\n return;\n } // Media source queue entries don't need to consider whether the source updater is\n // started (i.e., source buffers are created) as they don't need the source buffers, but\n // source buffer queue entries do.\n\n\n if (!sourceUpdater.ready() || sourceUpdater.mediaSource.readyState === 'closed' || _updating(type, sourceUpdater)) {\n return;\n }\n\n if (queueEntry.type !== type) {\n queueIndex = nextQueueIndexOfType(type, sourceUpdater.queue);\n\n if (queueIndex === null) {\n // Either there's no queue entry that uses this source buffer type in the queue, or\n // there's a media source queue entry before the next entry of this type, in which\n // case wait for that action to process first.\n return;\n }\n\n queueEntry = sourceUpdater.queue[queueIndex];\n }\n\n sourceUpdater.queue.splice(queueIndex, 1); // Keep a record that this source buffer type is in use.\n //\n // The queue pending operation must be set before the action is performed in the event\n // that the action results in a synchronous event that is acted upon. For instance, if\n // an exception is thrown that can be handled, it's possible that new actions will be\n // appended to an empty queue and immediately executed, but would not have the correct\n // pending information if this property was set after the action was performed.\n\n sourceUpdater.queuePending[type] = queueEntry;\n queueEntry.action(type, sourceUpdater);\n\n if (!queueEntry.doneFn) {\n // synchronous operation, process next entry\n sourceUpdater.queuePending[type] = null;\n shiftQueue(type, sourceUpdater);\n return;\n }\n};\n\nvar cleanupBuffer = function cleanupBuffer(type, sourceUpdater) {\n var buffer = sourceUpdater[type + \"Buffer\"];\n var titleType = toTitleCase(type);\n\n if (!buffer) {\n return;\n }\n\n buffer.removeEventListener('updateend', sourceUpdater[\"on\" + titleType + \"UpdateEnd_\"]);\n buffer.removeEventListener('error', sourceUpdater[\"on\" + titleType + \"Error_\"]);\n sourceUpdater.codecs[type] = null;\n sourceUpdater[type + \"Buffer\"] = null;\n};\n\nvar inSourceBuffers = function inSourceBuffers(mediaSource, sourceBuffer) {\n return mediaSource && sourceBuffer && Array.prototype.indexOf.call(mediaSource.sourceBuffers, sourceBuffer) !== -1;\n};\n\nvar actions = {\n appendBuffer: function appendBuffer(bytes, segmentInfo, onError) {\n return function (type, sourceUpdater) {\n var sourceBuffer = sourceUpdater[type + \"Buffer\"]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n\n sourceUpdater.logger_(\"Appending segment \" + segmentInfo.mediaIndex + \"'s \" + bytes.length + \" bytes to \" + type + \"Buffer\");\n\n try {\n sourceBuffer.appendBuffer(bytes);\n } catch (e) {\n sourceUpdater.logger_(\"Error with code \" + e.code + \" \" + (e.code === QUOTA_EXCEEDED_ERR ? '(QUOTA_EXCEEDED_ERR) ' : '') + (\"when appending segment \" + segmentInfo.mediaIndex + \" to \" + type + \"Buffer\"));\n sourceUpdater.queuePending[type] = null;\n onError(e);\n }\n };\n },\n remove: function remove(start, end) {\n return function (type, sourceUpdater) {\n var sourceBuffer = sourceUpdater[type + \"Buffer\"]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n\n sourceUpdater.logger_(\"Removing \" + start + \" to \" + end + \" from \" + type + \"Buffer\");\n\n try {\n sourceBuffer.remove(start, end);\n } catch (e) {\n sourceUpdater.logger_(\"Remove \" + start + \" to \" + end + \" from \" + type + \"Buffer failed\");\n }\n };\n },\n timestampOffset: function timestampOffset(offset) {\n return function (type, sourceUpdater) {\n var sourceBuffer = sourceUpdater[type + \"Buffer\"]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n\n sourceUpdater.logger_(\"Setting \" + type + \"timestampOffset to \" + offset);\n sourceBuffer.timestampOffset = offset;\n };\n },\n callback: function callback(_callback) {\n return function (type, sourceUpdater) {\n _callback();\n };\n },\n endOfStream: function endOfStream(error) {\n return function (sourceUpdater) {\n if (sourceUpdater.mediaSource.readyState !== 'open') {\n return;\n }\n\n sourceUpdater.logger_(\"Calling mediaSource endOfStream(\" + (error || '') + \")\");\n\n try {\n sourceUpdater.mediaSource.endOfStream(error);\n } catch (e) {\n videojs.log.warn('Failed to call media source endOfStream', e);\n }\n };\n },\n duration: function duration(_duration) {\n return function (sourceUpdater) {\n sourceUpdater.logger_(\"Setting mediaSource duration to \" + _duration);\n\n try {\n sourceUpdater.mediaSource.duration = _duration;\n } catch (e) {\n videojs.log.warn('Failed to set media source duration', e);\n }\n };\n },\n abort: function abort() {\n return function (type, sourceUpdater) {\n if (sourceUpdater.mediaSource.readyState !== 'open') {\n return;\n }\n\n var sourceBuffer = sourceUpdater[type + \"Buffer\"]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n\n sourceUpdater.logger_(\"calling abort on \" + type + \"Buffer\");\n\n try {\n sourceBuffer.abort();\n } catch (e) {\n videojs.log.warn(\"Failed to abort on \" + type + \"Buffer\", e);\n }\n };\n },\n addSourceBuffer: function addSourceBuffer(type, codec) {\n return function (sourceUpdater) {\n var titleType = toTitleCase(type);\n var mime = getMimeForCodec(codec);\n sourceUpdater.logger_(\"Adding \" + type + \"Buffer with codec \" + codec + \" to mediaSource\");\n var sourceBuffer = sourceUpdater.mediaSource.addSourceBuffer(mime);\n sourceBuffer.addEventListener('updateend', sourceUpdater[\"on\" + titleType + \"UpdateEnd_\"]);\n sourceBuffer.addEventListener('error', sourceUpdater[\"on\" + titleType + \"Error_\"]);\n sourceUpdater.codecs[type] = codec;\n sourceUpdater[type + \"Buffer\"] = sourceBuffer;\n };\n },\n removeSourceBuffer: function removeSourceBuffer(type) {\n return function (sourceUpdater) {\n var sourceBuffer = sourceUpdater[type + \"Buffer\"];\n cleanupBuffer(type, sourceUpdater); // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n\n sourceUpdater.logger_(\"Removing \" + type + \"Buffer with codec \" + sourceUpdater.codecs[type] + \" from mediaSource\");\n\n try {\n sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer);\n } catch (e) {\n videojs.log.warn(\"Failed to removeSourceBuffer \" + type + \"Buffer\", e);\n }\n };\n },\n changeType: function changeType(codec) {\n return function (type, sourceUpdater) {\n var sourceBuffer = sourceUpdater[type + \"Buffer\"];\n var mime = getMimeForCodec(codec); // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n } // do not update codec if we don't need to.\n\n\n if (sourceUpdater.codecs[type] === codec) {\n return;\n }\n\n sourceUpdater.logger_(\"changing \" + type + \"Buffer codec from \" + sourceUpdater.codecs[type] + \" to \" + codec);\n sourceBuffer.changeType(mime);\n sourceUpdater.codecs[type] = codec;\n };\n }\n};\n\nvar pushQueue = function pushQueue(_ref) {\n var type = _ref.type,\n sourceUpdater = _ref.sourceUpdater,\n action = _ref.action,\n doneFn = _ref.doneFn,\n name = _ref.name;\n sourceUpdater.queue.push({\n type: type,\n action: action,\n doneFn: doneFn,\n name: name\n });\n shiftQueue(type, sourceUpdater);\n};\n\nvar onUpdateend = function onUpdateend(type, sourceUpdater) {\n return function (e) {\n // Although there should, in theory, be a pending action for any updateend receieved,\n // there are some actions that may trigger updateend events without set definitions in\n // the w3c spec. For instance, setting the duration on the media source may trigger\n // updateend events on source buffers. This does not appear to be in the spec. As such,\n // if we encounter an updateend without a corresponding pending action from our queue\n // for that source buffer type, process the next action.\n if (sourceUpdater.queuePending[type]) {\n var doneFn = sourceUpdater.queuePending[type].doneFn;\n sourceUpdater.queuePending[type] = null;\n\n if (doneFn) {\n // if there's an error, report it\n doneFn(sourceUpdater[type + \"Error_\"]);\n }\n }\n\n shiftQueue(type, sourceUpdater);\n };\n};\n/**\n * A queue of callbacks to be serialized and applied when a\n * MediaSource and its associated SourceBuffers are not in the\n * updating state. It is used by the segment loader to update the\n * underlying SourceBuffers when new data is loaded, for instance.\n *\n * @class SourceUpdater\n * @param {MediaSource} mediaSource the MediaSource to create the SourceBuffer from\n * @param {string} mimeType the desired MIME type of the underlying SourceBuffer\n */\n\n\nvar SourceUpdater = /*#__PURE__*/function (_videojs$EventTarget) {\n _inheritsLoose(SourceUpdater, _videojs$EventTarget);\n\n function SourceUpdater(mediaSource) {\n var _this;\n\n _this = _videojs$EventTarget.call(this) || this;\n _this.mediaSource = mediaSource;\n\n _this.sourceopenListener_ = function () {\n return shiftQueue('mediaSource', _assertThisInitialized(_this));\n };\n\n _this.mediaSource.addEventListener('sourceopen', _this.sourceopenListener_);\n\n _this.logger_ = logger('SourceUpdater'); // initial timestamp offset is 0\n\n _this.audioTimestampOffset_ = 0;\n _this.videoTimestampOffset_ = 0;\n _this.queue = [];\n _this.queuePending = {\n audio: null,\n video: null\n };\n _this.delayedAudioAppendQueue_ = [];\n _this.videoAppendQueued_ = false;\n _this.codecs = {};\n _this.onVideoUpdateEnd_ = onUpdateend('video', _assertThisInitialized(_this));\n _this.onAudioUpdateEnd_ = onUpdateend('audio', _assertThisInitialized(_this));\n\n _this.onVideoError_ = function (e) {\n // used for debugging\n _this.videoError_ = e;\n };\n\n _this.onAudioError_ = function (e) {\n // used for debugging\n _this.audioError_ = e;\n };\n\n _this.createdSourceBuffers_ = false;\n _this.initializedEme_ = false;\n _this.triggeredReady_ = false;\n return _this;\n }\n\n var _proto = SourceUpdater.prototype;\n\n _proto.initializedEme = function initializedEme() {\n this.initializedEme_ = true;\n this.triggerReady();\n };\n\n _proto.hasCreatedSourceBuffers = function hasCreatedSourceBuffers() {\n // if false, likely waiting on one of the segment loaders to get enough data to create\n // source buffers\n return this.createdSourceBuffers_;\n };\n\n _proto.hasInitializedAnyEme = function hasInitializedAnyEme() {\n return this.initializedEme_;\n };\n\n _proto.ready = function ready() {\n return this.hasCreatedSourceBuffers() && this.hasInitializedAnyEme();\n };\n\n _proto.createSourceBuffers = function createSourceBuffers(codecs) {\n if (this.hasCreatedSourceBuffers()) {\n // already created them before\n return;\n } // the intial addOrChangeSourceBuffers will always be\n // two add buffers.\n\n\n this.addOrChangeSourceBuffers(codecs);\n this.createdSourceBuffers_ = true;\n this.trigger('createdsourcebuffers');\n this.triggerReady();\n };\n\n _proto.triggerReady = function triggerReady() {\n // only allow ready to be triggered once, this prevents the case\n // where:\n // 1. we trigger createdsourcebuffers\n // 2. ie 11 synchronously initializates eme\n // 3. the synchronous initialization causes us to trigger ready\n // 4. We go back to the ready check in createSourceBuffers and ready is triggered again.\n if (this.ready() && !this.triggeredReady_) {\n this.triggeredReady_ = true;\n this.trigger('ready');\n }\n }\n /**\n * Add a type of source buffer to the media source.\n *\n * @param {string} type\n * The type of source buffer to add.\n *\n * @param {string} codec\n * The codec to add the source buffer with.\n */\n ;\n\n _proto.addSourceBuffer = function addSourceBuffer(type, codec) {\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.addSourceBuffer(type, codec),\n name: 'addSourceBuffer'\n });\n }\n /**\n * call abort on a source buffer.\n *\n * @param {string} type\n * The type of source buffer to call abort on.\n */\n ;\n\n _proto.abort = function abort(type) {\n pushQueue({\n type: type,\n sourceUpdater: this,\n action: actions.abort(type),\n name: 'abort'\n });\n }\n /**\n * Call removeSourceBuffer and remove a specific type\n * of source buffer on the mediaSource.\n *\n * @param {string} type\n * The type of source buffer to remove.\n */\n ;\n\n _proto.removeSourceBuffer = function removeSourceBuffer(type) {\n if (!this.canRemoveSourceBuffer()) {\n videojs.log.error('removeSourceBuffer is not supported!');\n return;\n }\n\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.removeSourceBuffer(type),\n name: 'removeSourceBuffer'\n });\n }\n /**\n * Whether or not the removeSourceBuffer function is supported\n * on the mediaSource.\n *\n * @return {boolean}\n * if removeSourceBuffer can be called.\n */\n ;\n\n _proto.canRemoveSourceBuffer = function canRemoveSourceBuffer() {\n // IE reports that it supports removeSourceBuffer, but often throws\n // errors when attempting to use the function. So we report that it\n // does not support removeSourceBuffer. As of Firefox 83 removeSourceBuffer\n // throws errors, so we report that it does not support this as well.\n return !videojs.browser.IE_VERSION && !videojs.browser.IS_FIREFOX && window$1.MediaSource && window$1.MediaSource.prototype && typeof window$1.MediaSource.prototype.removeSourceBuffer === 'function';\n }\n /**\n * Whether or not the changeType function is supported\n * on our SourceBuffers.\n *\n * @return {boolean}\n * if changeType can be called.\n */\n ;\n\n SourceUpdater.canChangeType = function canChangeType() {\n return window$1.SourceBuffer && window$1.SourceBuffer.prototype && typeof window$1.SourceBuffer.prototype.changeType === 'function';\n }\n /**\n * Whether or not the changeType function is supported\n * on our SourceBuffers.\n *\n * @return {boolean}\n * if changeType can be called.\n */\n ;\n\n _proto.canChangeType = function canChangeType() {\n return this.constructor.canChangeType();\n }\n /**\n * Call the changeType function on a source buffer, given the code and type.\n *\n * @param {string} type\n * The type of source buffer to call changeType on.\n *\n * @param {string} codec\n * The codec string to change type with on the source buffer.\n */\n ;\n\n _proto.changeType = function changeType(type, codec) {\n if (!this.canChangeType()) {\n videojs.log.error('changeType is not supported!');\n return;\n }\n\n pushQueue({\n type: type,\n sourceUpdater: this,\n action: actions.changeType(codec),\n name: 'changeType'\n });\n }\n /**\n * Add source buffers with a codec or, if they are already created,\n * call changeType on source buffers using changeType.\n *\n * @param {Object} codecs\n * Codecs to switch to\n */\n ;\n\n _proto.addOrChangeSourceBuffers = function addOrChangeSourceBuffers(codecs) {\n var _this2 = this;\n\n if (!codecs || typeof codecs !== 'object' || Object.keys(codecs).length === 0) {\n throw new Error('Cannot addOrChangeSourceBuffers to undefined codecs');\n }\n\n Object.keys(codecs).forEach(function (type) {\n var codec = codecs[type];\n\n if (!_this2.hasCreatedSourceBuffers()) {\n return _this2.addSourceBuffer(type, codec);\n }\n\n if (_this2.canChangeType()) {\n _this2.changeType(type, codec);\n }\n });\n }\n /**\n * Queue an update to append an ArrayBuffer.\n *\n * @param {MediaObject} object containing audioBytes and/or videoBytes\n * @param {Function} done the function to call when done\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data\n */\n ;\n\n _proto.appendBuffer = function appendBuffer(options, doneFn) {\n var _this3 = this;\n\n var segmentInfo = options.segmentInfo,\n type = options.type,\n bytes = options.bytes;\n this.processedAppend_ = true;\n\n if (type === 'audio' && this.videoBuffer && !this.videoAppendQueued_) {\n this.delayedAudioAppendQueue_.push([options, doneFn]);\n this.logger_(\"delayed audio append of \" + bytes.length + \" until video append\");\n return;\n } // In the case of certain errors, for instance, QUOTA_EXCEEDED_ERR, updateend will\n // not be fired. This means that the queue will be blocked until the next action\n // taken by the segment-loader. Provide a mechanism for segment-loader to handle\n // these errors by calling the doneFn with the specific error.\n\n\n var onError = doneFn;\n pushQueue({\n type: type,\n sourceUpdater: this,\n action: actions.appendBuffer(bytes, segmentInfo || {\n mediaIndex: -1\n }, onError),\n doneFn: doneFn,\n name: 'appendBuffer'\n });\n\n if (type === 'video') {\n this.videoAppendQueued_ = true;\n\n if (!this.delayedAudioAppendQueue_.length) {\n return;\n }\n\n var queue = this.delayedAudioAppendQueue_.slice();\n this.logger_(\"queuing delayed audio \" + queue.length + \" appendBuffers\");\n this.delayedAudioAppendQueue_.length = 0;\n queue.forEach(function (que) {\n _this3.appendBuffer.apply(_this3, que);\n });\n }\n }\n /**\n * Get the audio buffer's buffered timerange.\n *\n * @return {TimeRange}\n * The audio buffer's buffered time range\n */\n ;\n\n _proto.audioBuffered = function audioBuffered() {\n // no media source/source buffer or it isn't in the media sources\n // source buffer list\n if (!inSourceBuffers(this.mediaSource, this.audioBuffer)) {\n return videojs.createTimeRange();\n }\n\n return this.audioBuffer.buffered ? this.audioBuffer.buffered : videojs.createTimeRange();\n }\n /**\n * Get the video buffer's buffered timerange.\n *\n * @return {TimeRange}\n * The video buffer's buffered time range\n */\n ;\n\n _proto.videoBuffered = function videoBuffered() {\n // no media source/source buffer or it isn't in the media sources\n // source buffer list\n if (!inSourceBuffers(this.mediaSource, this.videoBuffer)) {\n return videojs.createTimeRange();\n }\n\n return this.videoBuffer.buffered ? this.videoBuffer.buffered : videojs.createTimeRange();\n }\n /**\n * Get a combined video/audio buffer's buffered timerange.\n *\n * @return {TimeRange}\n * the combined time range\n */\n ;\n\n _proto.buffered = function buffered() {\n var video = inSourceBuffers(this.mediaSource, this.videoBuffer) ? this.videoBuffer : null;\n var audio = inSourceBuffers(this.mediaSource, this.audioBuffer) ? this.audioBuffer : null;\n\n if (audio && !video) {\n return this.audioBuffered();\n }\n\n if (video && !audio) {\n return this.videoBuffered();\n }\n\n return bufferIntersection(this.audioBuffered(), this.videoBuffered());\n }\n /**\n * Add a callback to the queue that will set duration on the mediaSource.\n *\n * @param {number} duration\n * The duration to set\n *\n * @param {Function} [doneFn]\n * function to run after duration has been set.\n */\n ;\n\n _proto.setDuration = function setDuration(duration, doneFn) {\n if (doneFn === void 0) {\n doneFn = noop;\n } // In order to set the duration on the media source, it's necessary to wait for all\n // source buffers to no longer be updating. \"If the updating attribute equals true on\n // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n\n\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.duration(duration),\n name: 'duration',\n doneFn: doneFn\n });\n }\n /**\n * Add a mediaSource endOfStream call to the queue\n *\n * @param {Error} [error]\n * Call endOfStream with an error\n *\n * @param {Function} [doneFn]\n * A function that should be called when the\n * endOfStream call has finished.\n */\n ;\n\n _proto.endOfStream = function endOfStream(error, doneFn) {\n if (error === void 0) {\n error = null;\n }\n\n if (doneFn === void 0) {\n doneFn = noop;\n }\n\n if (typeof error !== 'string') {\n error = undefined;\n } // In order to set the duration on the media source, it's necessary to wait for all\n // source buffers to no longer be updating. \"If the updating attribute equals true on\n // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n\n\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.endOfStream(error),\n name: 'endOfStream',\n doneFn: doneFn\n });\n }\n /**\n * Queue an update to remove a time range from the buffer.\n *\n * @param {number} start where to start the removal\n * @param {number} end where to end the removal\n * @param {Function} [done=noop] optional callback to be executed when the remove\n * operation is complete\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n */\n ;\n\n _proto.removeAudio = function removeAudio(start, end, done) {\n if (done === void 0) {\n done = noop;\n }\n\n if (!this.audioBuffered().length || this.audioBuffered().end(0) === 0) {\n done();\n return;\n }\n\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.remove(start, end),\n doneFn: done,\n name: 'remove'\n });\n }\n /**\n * Queue an update to remove a time range from the buffer.\n *\n * @param {number} start where to start the removal\n * @param {number} end where to end the removal\n * @param {Function} [done=noop] optional callback to be executed when the remove\n * operation is complete\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n */\n ;\n\n _proto.removeVideo = function removeVideo(start, end, done) {\n if (done === void 0) {\n done = noop;\n }\n\n if (!this.videoBuffered().length || this.videoBuffered().end(0) === 0) {\n done();\n return;\n }\n\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.remove(start, end),\n doneFn: done,\n name: 'remove'\n });\n }\n /**\n * Whether the underlying sourceBuffer is updating or not\n *\n * @return {boolean} the updating status of the SourceBuffer\n */\n ;\n\n _proto.updating = function updating() {\n // the audio/video source buffer is updating\n if (_updating('audio', this) || _updating('video', this)) {\n return true;\n }\n\n return false;\n }\n /**\n * Set/get the timestampoffset on the audio SourceBuffer\n *\n * @return {number} the timestamp offset\n */\n ;\n\n _proto.audioTimestampOffset = function audioTimestampOffset(offset) {\n if (typeof offset !== 'undefined' && this.audioBuffer && // no point in updating if it's the same\n this.audioTimestampOffset_ !== offset) {\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.timestampOffset(offset),\n name: 'timestampOffset'\n });\n this.audioTimestampOffset_ = offset;\n }\n\n return this.audioTimestampOffset_;\n }\n /**\n * Set/get the timestampoffset on the video SourceBuffer\n *\n * @return {number} the timestamp offset\n */\n ;\n\n _proto.videoTimestampOffset = function videoTimestampOffset(offset) {\n if (typeof offset !== 'undefined' && this.videoBuffer && // no point in updating if it's the same\n this.videoTimestampOffset !== offset) {\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.timestampOffset(offset),\n name: 'timestampOffset'\n });\n this.videoTimestampOffset_ = offset;\n }\n\n return this.videoTimestampOffset_;\n }\n /**\n * Add a function to the queue that will be called\n * when it is its turn to run in the audio queue.\n *\n * @param {Function} callback\n * The callback to queue.\n */\n ;\n\n _proto.audioQueueCallback = function audioQueueCallback(callback) {\n if (!this.audioBuffer) {\n return;\n }\n\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.callback(callback),\n name: 'callback'\n });\n }\n /**\n * Add a function to the queue that will be called\n * when it is its turn to run in the video queue.\n *\n * @param {Function} callback\n * The callback to queue.\n */\n ;\n\n _proto.videoQueueCallback = function videoQueueCallback(callback) {\n if (!this.videoBuffer) {\n return;\n }\n\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.callback(callback),\n name: 'callback'\n });\n }\n /**\n * dispose of the source updater and the underlying sourceBuffer\n */\n ;\n\n _proto.dispose = function dispose() {\n var _this4 = this;\n\n this.trigger('dispose');\n bufferTypes.forEach(function (type) {\n _this4.abort(type);\n\n if (_this4.canRemoveSourceBuffer()) {\n _this4.removeSourceBuffer(type);\n } else {\n _this4[type + \"QueueCallback\"](function () {\n return cleanupBuffer(type, _this4);\n });\n }\n });\n this.videoAppendQueued_ = false;\n this.delayedAudioAppendQueue_.length = 0;\n\n if (this.sourceopenListener_) {\n this.mediaSource.removeEventListener('sourceopen', this.sourceopenListener_);\n }\n\n this.off();\n };\n\n return SourceUpdater;\n}(videojs.EventTarget);\n\nvar uint8ToUtf8 = function uint8ToUtf8(uintArray) {\n return decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));\n};\n\nvar VTT_LINE_TERMINATORS = new Uint8Array('\\n\\n'.split('').map(function (_char3) {\n return _char3.charCodeAt(0);\n}));\n\nvar NoVttJsError = /*#__PURE__*/function (_Error) {\n _inheritsLoose(NoVttJsError, _Error);\n\n function NoVttJsError() {\n return _Error.call(this, 'Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.') || this;\n }\n\n return NoVttJsError;\n}( /*#__PURE__*/_wrapNativeSuper(Error));\n/**\n * An object that manages segment loading and appending.\n *\n * @class VTTSegmentLoader\n * @param {Object} options required and optional options\n * @extends videojs.EventTarget\n */\n\n\nvar VTTSegmentLoader = /*#__PURE__*/function (_SegmentLoader) {\n _inheritsLoose(VTTSegmentLoader, _SegmentLoader);\n\n function VTTSegmentLoader(settings, options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _SegmentLoader.call(this, settings, options) || this; // SegmentLoader requires a MediaSource be specified or it will throw an error;\n // however, VTTSegmentLoader has no need of a media source, so delete the reference\n\n _this.mediaSource_ = null;\n _this.subtitlesTrack_ = null;\n _this.loaderType_ = 'subtitle';\n _this.featuresNativeTextTracks_ = settings.featuresNativeTextTracks;\n _this.loadVttJs = settings.loadVttJs; // The VTT segment will have its own time mappings. Saving VTT segment timing info in\n // the sync controller leads to improper behavior.\n\n _this.shouldSaveSegmentTimingInfo_ = false;\n return _this;\n }\n\n var _proto = VTTSegmentLoader.prototype;\n\n _proto.createTransmuxer_ = function createTransmuxer_() {\n // don't need to transmux any subtitles\n return null;\n }\n /**\n * Indicates which time ranges are buffered\n *\n * @return {TimeRange}\n * TimeRange object representing the current buffered ranges\n */\n ;\n\n _proto.buffered_ = function buffered_() {\n if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues || !this.subtitlesTrack_.cues.length) {\n return videojs.createTimeRanges();\n }\n\n var cues = this.subtitlesTrack_.cues;\n var start = cues[0].startTime;\n var end = cues[cues.length - 1].startTime;\n return videojs.createTimeRanges([[start, end]]);\n }\n /**\n * Gets and sets init segment for the provided map\n *\n * @param {Object} map\n * The map object representing the init segment to get or set\n * @param {boolean=} set\n * If true, the init segment for the provided map should be saved\n * @return {Object}\n * map object for desired init segment\n */\n ;\n\n _proto.initSegmentForMap = function initSegmentForMap(map, set) {\n if (set === void 0) {\n set = false;\n }\n\n if (!map) {\n return null;\n }\n\n var id = initSegmentId(map);\n var storedMap = this.initSegments_[id];\n\n if (set && !storedMap && map.bytes) {\n // append WebVTT line terminators to the media initialization segment if it exists\n // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that\n // requires two or more WebVTT line terminators between the WebVTT header and the\n // rest of the file\n var combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;\n var combinedSegment = new Uint8Array(combinedByteLength);\n combinedSegment.set(map.bytes);\n combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);\n this.initSegments_[id] = storedMap = {\n resolvedUri: map.resolvedUri,\n byterange: map.byterange,\n bytes: combinedSegment\n };\n }\n\n return storedMap || map;\n }\n /**\n * Returns true if all configuration required for loading is present, otherwise false.\n *\n * @return {boolean} True if the all configuration is ready for loading\n * @private\n */\n ;\n\n _proto.couldBeginLoading_ = function couldBeginLoading_() {\n return this.playlist_ && this.subtitlesTrack_ && !this.paused();\n }\n /**\n * Once all the starting parameters have been specified, begin\n * operation. This method should only be invoked from the INIT\n * state.\n *\n * @private\n */\n ;\n\n _proto.init_ = function init_() {\n this.state = 'READY';\n this.resetEverything();\n return this.monitorBuffer_();\n }\n /**\n * Set a subtitle track on the segment loader to add subtitles to\n *\n * @param {TextTrack=} track\n * The text track to add loaded subtitles to\n * @return {TextTrack}\n * Returns the subtitles track\n */\n ;\n\n _proto.track = function track(_track) {\n if (typeof _track === 'undefined') {\n return this.subtitlesTrack_;\n }\n\n this.subtitlesTrack_ = _track; // if we were unpaused but waiting for a sourceUpdater, start\n // buffering now\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n this.init_();\n }\n\n return this.subtitlesTrack_;\n }\n /**\n * Remove any data in the source buffer between start and end times\n *\n * @param {number} start - the start time of the region to remove from the buffer\n * @param {number} end - the end time of the region to remove from the buffer\n */\n ;\n\n _proto.remove = function remove(start, end) {\n removeCuesFromTrack(start, end, this.subtitlesTrack_);\n }\n /**\n * fill the buffer with segements unless the sourceBuffers are\n * currently updating\n *\n * Note: this function should only ever be called by monitorBuffer_\n * and never directly\n *\n * @private\n */\n ;\n\n _proto.fillBuffer_ = function fillBuffer_() {\n var _this2 = this; // see if we need to begin loading immediately\n\n\n var segmentInfo = this.chooseNextRequest_();\n\n if (!segmentInfo) {\n return;\n }\n\n if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {\n // We don't have the timestamp offset that we need to sync subtitles.\n // Rerun on a timestamp offset or user interaction.\n var checkTimestampOffset = function checkTimestampOffset() {\n _this2.state = 'READY';\n\n if (!_this2.paused()) {\n // if not paused, queue a buffer check as soon as possible\n _this2.monitorBuffer_();\n }\n };\n\n this.syncController_.one('timestampoffset', checkTimestampOffset);\n this.state = 'WAITING_ON_TIMELINE';\n return;\n }\n\n this.loadSegment_(segmentInfo);\n } // never set a timestamp offset for vtt segments.\n ;\n\n _proto.timestampOffsetForSegment_ = function timestampOffsetForSegment_() {\n return null;\n };\n\n _proto.chooseNextRequest_ = function chooseNextRequest_() {\n return this.skipEmptySegments_(_SegmentLoader.prototype.chooseNextRequest_.call(this));\n }\n /**\n * Prevents the segment loader from requesting segments we know contain no subtitles\n * by walking forward until we find the next segment that we don't know whether it is\n * empty or not.\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @return {Object}\n * a segment info object that describes the current segment\n */\n ;\n\n _proto.skipEmptySegments_ = function skipEmptySegments_(segmentInfo) {\n while (segmentInfo && segmentInfo.segment.empty) {\n // stop at the last possible segmentInfo\n if (segmentInfo.mediaIndex + 1 >= segmentInfo.playlist.segments.length) {\n segmentInfo = null;\n break;\n }\n\n segmentInfo = this.generateSegmentInfo_({\n playlist: segmentInfo.playlist,\n mediaIndex: segmentInfo.mediaIndex + 1,\n startOfSegment: segmentInfo.startOfSegment + segmentInfo.duration,\n isSyncRequest: segmentInfo.isSyncRequest\n });\n }\n\n return segmentInfo;\n };\n\n _proto.stopForError = function stopForError(error) {\n this.error(error);\n this.state = 'READY';\n this.pause();\n this.trigger('error');\n }\n /**\n * append a decrypted segement to the SourceBuffer through a SourceUpdater\n *\n * @private\n */\n ;\n\n _proto.segmentRequestFinished_ = function segmentRequestFinished_(error, simpleSegment, result) {\n var _this3 = this;\n\n if (!this.subtitlesTrack_) {\n this.state = 'READY';\n return;\n }\n\n this.saveTransferStats_(simpleSegment.stats); // the request was aborted\n\n if (!this.pendingSegment_) {\n this.state = 'READY';\n this.mediaRequestsAborted += 1;\n return;\n }\n\n if (error) {\n if (error.code === REQUEST_ERRORS.TIMEOUT) {\n this.handleTimeout_();\n }\n\n if (error.code === REQUEST_ERRORS.ABORTED) {\n this.mediaRequestsAborted += 1;\n } else {\n this.mediaRequestsErrored += 1;\n }\n\n this.stopForError(error);\n return;\n }\n\n var segmentInfo = this.pendingSegment_; // although the VTT segment loader bandwidth isn't really used, it's good to\n // maintain functionality between segment loaders\n\n this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats); // if this request included a segment key, save that data in the cache\n\n if (simpleSegment.key) {\n this.segmentKey(simpleSegment.key, true);\n }\n\n this.state = 'APPENDING'; // used for tests\n\n this.trigger('appending');\n var segment = segmentInfo.segment;\n\n if (segment.map) {\n segment.map.bytes = simpleSegment.map.bytes;\n }\n\n segmentInfo.bytes = simpleSegment.bytes; // Make sure that vttjs has loaded, otherwise, load it and wait till it finished loading\n\n if (typeof window$1.WebVTT !== 'function' && typeof this.loadVttJs === 'function') {\n this.state = 'WAITING_ON_VTTJS'; // should be fine to call multiple times\n // script will be loaded once but multiple listeners will be added to the queue, which is expected.\n\n this.loadVttJs().then(function () {\n return _this3.segmentRequestFinished_(error, simpleSegment, result);\n }, function () {\n return _this3.stopForError({\n message: 'Error loading vtt.js'\n });\n });\n return;\n }\n\n segment.requested = true;\n\n try {\n this.parseVTTCues_(segmentInfo);\n } catch (e) {\n this.stopForError({\n message: e.message\n });\n return;\n }\n\n this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);\n\n if (segmentInfo.cues.length) {\n segmentInfo.timingInfo = {\n start: segmentInfo.cues[0].startTime,\n end: segmentInfo.cues[segmentInfo.cues.length - 1].endTime\n };\n } else {\n segmentInfo.timingInfo = {\n start: segmentInfo.startOfSegment,\n end: segmentInfo.startOfSegment + segmentInfo.duration\n };\n }\n\n if (segmentInfo.isSyncRequest) {\n this.trigger('syncinfoupdate');\n this.pendingSegment_ = null;\n this.state = 'READY';\n return;\n }\n\n segmentInfo.byteLength = segmentInfo.bytes.byteLength;\n this.mediaSecondsLoaded += segment.duration; // Create VTTCue instances for each cue in the new segment and add them to\n // the subtitle track\n\n segmentInfo.cues.forEach(function (cue) {\n _this3.subtitlesTrack_.addCue(_this3.featuresNativeTextTracks_ ? new window$1.VTTCue(cue.startTime, cue.endTime, cue.text) : cue);\n }); // Remove any duplicate cues from the subtitle track. The WebVTT spec allows\n // cues to have identical time-intervals, but if the text is also identical\n // we can safely assume it is a duplicate that can be removed (ex. when a cue\n // \"overlaps\" VTT segments)\n\n removeDuplicateCuesFromTrack(this.subtitlesTrack_);\n this.handleAppendsDone_();\n };\n\n _proto.handleData_ = function handleData_() {// noop as we shouldn't be getting video/audio data captions\n // that we do not support here.\n };\n\n _proto.updateTimingInfoEnd_ = function updateTimingInfoEnd_() {// noop\n }\n /**\n * Uses the WebVTT parser to parse the segment response\n *\n * @throws NoVttJsError\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @private\n */\n ;\n\n _proto.parseVTTCues_ = function parseVTTCues_(segmentInfo) {\n var decoder;\n var decodeBytesToString = false;\n\n if (typeof window$1.WebVTT !== 'function') {\n // caller is responsible for exception handling.\n throw new NoVttJsError();\n }\n\n if (typeof window$1.TextDecoder === 'function') {\n decoder = new window$1.TextDecoder('utf8');\n } else {\n decoder = window$1.WebVTT.StringDecoder();\n decodeBytesToString = true;\n }\n\n var parser = new window$1.WebVTT.Parser(window$1, window$1.vttjs, decoder);\n segmentInfo.cues = [];\n segmentInfo.timestampmap = {\n MPEGTS: 0,\n LOCAL: 0\n };\n parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);\n\n parser.ontimestampmap = function (map) {\n segmentInfo.timestampmap = map;\n };\n\n parser.onparsingerror = function (error) {\n videojs.log.warn('Error encountered when parsing cues: ' + error.message);\n };\n\n if (segmentInfo.segment.map) {\n var mapData = segmentInfo.segment.map.bytes;\n\n if (decodeBytesToString) {\n mapData = uint8ToUtf8(mapData);\n }\n\n parser.parse(mapData);\n }\n\n var segmentData = segmentInfo.bytes;\n\n if (decodeBytesToString) {\n segmentData = uint8ToUtf8(segmentData);\n }\n\n parser.parse(segmentData);\n parser.flush();\n }\n /**\n * Updates the start and end times of any cues parsed by the WebVTT parser using\n * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping\n * from the SyncController\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @param {Object} mappingObj\n * object containing a mapping from TS to media time\n * @param {Object} playlist\n * the playlist object containing the segment\n * @private\n */\n ;\n\n _proto.updateTimeMapping_ = function updateTimeMapping_(segmentInfo, mappingObj, playlist) {\n var segment = segmentInfo.segment;\n\n if (!mappingObj) {\n // If the sync controller does not have a mapping of TS to Media Time for the\n // timeline, then we don't have enough information to update the cue\n // start/end times\n return;\n }\n\n if (!segmentInfo.cues.length) {\n // If there are no cues, we also do not have enough information to figure out\n // segment timing. Mark that the segment contains no cues so we don't re-request\n // an empty segment.\n segment.empty = true;\n return;\n }\n\n var timestampmap = segmentInfo.timestampmap;\n var diff = timestampmap.MPEGTS / ONE_SECOND_IN_TS - timestampmap.LOCAL + mappingObj.mapping;\n segmentInfo.cues.forEach(function (cue) {\n // First convert cue time to TS time using the timestamp-map provided within the vtt\n cue.startTime += diff;\n cue.endTime += diff;\n });\n\n if (!playlist.syncInfo) {\n var firstStart = segmentInfo.cues[0].startTime;\n var lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;\n playlist.syncInfo = {\n mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,\n time: Math.min(firstStart, lastStart - segment.duration)\n };\n }\n };\n\n return VTTSegmentLoader;\n}(SegmentLoader);\n/**\n * @file ad-cue-tags.js\n */\n\n/**\n * Searches for an ad cue that overlaps with the given mediaTime\n *\n * @param {Object} track\n * the track to find the cue for\n *\n * @param {number} mediaTime\n * the time to find the cue at\n *\n * @return {Object|null}\n * the found cue or null\n */\n\n\nvar findAdCue = function findAdCue(track, mediaTime) {\n var cues = track.cues;\n\n for (var i = 0; i < cues.length; i++) {\n var cue = cues[i];\n\n if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {\n return cue;\n }\n }\n\n return null;\n};\n\nvar updateAdCues = function updateAdCues(media, track, offset) {\n if (offset === void 0) {\n offset = 0;\n }\n\n if (!media.segments) {\n return;\n }\n\n var mediaTime = offset;\n var cue;\n\n for (var i = 0; i < media.segments.length; i++) {\n var segment = media.segments[i];\n\n if (!cue) {\n // Since the cues will span for at least the segment duration, adding a fudge\n // factor of half segment duration will prevent duplicate cues from being\n // created when timing info is not exact (e.g. cue start time initialized\n // at 10.006677, but next call mediaTime is 10.003332 )\n cue = findAdCue(track, mediaTime + segment.duration / 2);\n }\n\n if (cue) {\n if ('cueIn' in segment) {\n // Found a CUE-IN so end the cue\n cue.endTime = mediaTime;\n cue.adEndTime = mediaTime;\n mediaTime += segment.duration;\n cue = null;\n continue;\n }\n\n if (mediaTime < cue.endTime) {\n // Already processed this mediaTime for this cue\n mediaTime += segment.duration;\n continue;\n } // otherwise extend cue until a CUE-IN is found\n\n\n cue.endTime += segment.duration;\n } else {\n if ('cueOut' in segment) {\n cue = new window$1.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);\n cue.adStartTime = mediaTime; // Assumes tag format to be\n // #EXT-X-CUE-OUT:30\n\n cue.adEndTime = mediaTime + parseFloat(segment.cueOut);\n track.addCue(cue);\n }\n\n if ('cueOutCont' in segment) {\n // Entered into the middle of an ad cue\n // Assumes tag formate to be\n // #EXT-X-CUE-OUT-CONT:10/30\n var _segment$cueOutCont$s = segment.cueOutCont.split('/').map(parseFloat),\n adOffset = _segment$cueOutCont$s[0],\n adTotal = _segment$cueOutCont$s[1];\n\n cue = new window$1.VTTCue(mediaTime, mediaTime + segment.duration, '');\n cue.adStartTime = mediaTime - adOffset;\n cue.adEndTime = cue.adStartTime + adTotal;\n track.addCue(cue);\n }\n }\n\n mediaTime += segment.duration;\n }\n}; // synchronize expired playlist segments.\n// the max media sequence diff is 48 hours of live stream\n// content with two second segments. Anything larger than that\n// will likely be invalid.\n\n\nvar MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC = 86400;\nvar syncPointStrategies = [// Stategy \"VOD\": Handle the VOD-case where the sync-point is *always*\n// the equivalence display-time 0 === segment-index 0\n{\n name: 'VOD',\n run: function run(syncController, playlist, duration, currentTimeline, currentTime) {\n if (duration !== Infinity) {\n var syncPoint = {\n time: 0,\n segmentIndex: 0,\n partIndex: null\n };\n return syncPoint;\n }\n\n return null;\n }\n}, // Stategy \"ProgramDateTime\": We have a program-date-time tag in this playlist\n{\n name: 'ProgramDateTime',\n run: function run(syncController, playlist, duration, currentTimeline, currentTime) {\n if (!Object.keys(syncController.timelineToDatetimeMappings).length) {\n return null;\n }\n\n var syncPoint = null;\n var lastDistance = null;\n var partsAndSegments = getPartsAndSegments(playlist);\n currentTime = currentTime || 0;\n\n for (var i = 0; i < partsAndSegments.length; i++) {\n // start from the end and loop backwards for live\n // or start from the front and loop forwards for non-live\n var index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n var partAndSegment = partsAndSegments[index];\n var segment = partAndSegment.segment;\n var datetimeMapping = syncController.timelineToDatetimeMappings[segment.timeline];\n\n if (!datetimeMapping || !segment.dateTimeObject) {\n continue;\n }\n\n var segmentTime = segment.dateTimeObject.getTime() / 1000;\n var start = segmentTime + datetimeMapping; // take part duration into account.\n\n if (segment.parts && typeof partAndSegment.partIndex === 'number') {\n for (var z = 0; z < partAndSegment.partIndex; z++) {\n start += segment.parts[z].duration;\n }\n }\n\n var distance = Math.abs(currentTime - start); // Once the distance begins to increase, or if distance is 0, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && (distance === 0 || lastDistance < distance)) {\n break;\n }\n\n lastDistance = distance;\n syncPoint = {\n time: start,\n segmentIndex: partAndSegment.segmentIndex,\n partIndex: partAndSegment.partIndex\n };\n }\n\n return syncPoint;\n }\n}, // Stategy \"Segment\": We have a known time mapping for a timeline and a\n// segment in the current timeline with timing data\n{\n name: 'Segment',\n run: function run(syncController, playlist, duration, currentTimeline, currentTime) {\n var syncPoint = null;\n var lastDistance = null;\n currentTime = currentTime || 0;\n var partsAndSegments = getPartsAndSegments(playlist);\n\n for (var i = 0; i < partsAndSegments.length; i++) {\n // start from the end and loop backwards for live\n // or start from the front and loop forwards for non-live\n var index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n var partAndSegment = partsAndSegments[index];\n var segment = partAndSegment.segment;\n var start = partAndSegment.part && partAndSegment.part.start || segment && segment.start;\n\n if (segment.timeline === currentTimeline && typeof start !== 'undefined') {\n var distance = Math.abs(currentTime - start); // Once the distance begins to increase, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && lastDistance < distance) {\n break;\n }\n\n if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n lastDistance = distance;\n syncPoint = {\n time: start,\n segmentIndex: partAndSegment.segmentIndex,\n partIndex: partAndSegment.partIndex\n };\n }\n }\n }\n\n return syncPoint;\n }\n}, // Stategy \"Discontinuity\": We have a discontinuity with a known\n// display-time\n{\n name: 'Discontinuity',\n run: function run(syncController, playlist, duration, currentTimeline, currentTime) {\n var syncPoint = null;\n currentTime = currentTime || 0;\n\n if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n var lastDistance = null;\n\n for (var i = 0; i < playlist.discontinuityStarts.length; i++) {\n var segmentIndex = playlist.discontinuityStarts[i];\n var discontinuity = playlist.discontinuitySequence + i + 1;\n var discontinuitySync = syncController.discontinuities[discontinuity];\n\n if (discontinuitySync) {\n var distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && lastDistance < distance) {\n break;\n }\n\n if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n lastDistance = distance;\n syncPoint = {\n time: discontinuitySync.time,\n segmentIndex: segmentIndex,\n partIndex: null\n };\n }\n }\n }\n }\n\n return syncPoint;\n }\n}, // Stategy \"Playlist\": We have a playlist with a known mapping of\n// segment index to display time\n{\n name: 'Playlist',\n run: function run(syncController, playlist, duration, currentTimeline, currentTime) {\n if (playlist.syncInfo) {\n var syncPoint = {\n time: playlist.syncInfo.time,\n segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence,\n partIndex: null\n };\n return syncPoint;\n }\n\n return null;\n }\n}];\n\nvar SyncController = /*#__PURE__*/function (_videojs$EventTarget) {\n _inheritsLoose(SyncController, _videojs$EventTarget);\n\n function SyncController(options) {\n var _this;\n\n _this = _videojs$EventTarget.call(this) || this; // ...for synching across variants\n\n _this.timelines = [];\n _this.discontinuities = [];\n _this.timelineToDatetimeMappings = {};\n _this.logger_ = logger('SyncController');\n return _this;\n }\n /**\n * Find a sync-point for the playlist specified\n *\n * A sync-point is defined as a known mapping from display-time to\n * a segment-index in the current playlist.\n *\n * @param {Playlist} playlist\n * The playlist that needs a sync-point\n * @param {number} duration\n * Duration of the MediaSource (Infinite if playing a live source)\n * @param {number} currentTimeline\n * The last timeline from which a segment was loaded\n * @return {Object}\n * A sync-point object\n */\n\n\n var _proto = SyncController.prototype;\n\n _proto.getSyncPoint = function getSyncPoint(playlist, duration, currentTimeline, currentTime) {\n var syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime);\n\n if (!syncPoints.length) {\n // Signal that we need to attempt to get a sync-point manually\n // by fetching a segment in the playlist and constructing\n // a sync-point from that information\n return null;\n } // Now find the sync-point that is closest to the currentTime because\n // that should result in the most accurate guess about which segment\n // to fetch\n\n\n return this.selectSyncPoint_(syncPoints, {\n key: 'time',\n value: currentTime\n });\n }\n /**\n * Calculate the amount of time that has expired off the playlist during playback\n *\n * @param {Playlist} playlist\n * Playlist object to calculate expired from\n * @param {number} duration\n * Duration of the MediaSource (Infinity if playling a live source)\n * @return {number|null}\n * The amount of time that has expired off the playlist during playback. Null\n * if no sync-points for the playlist can be found.\n */\n ;\n\n _proto.getExpiredTime = function getExpiredTime(playlist, duration) {\n if (!playlist || !playlist.segments) {\n return null;\n }\n\n var syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time\n\n if (!syncPoints.length) {\n return null;\n }\n\n var syncPoint = this.selectSyncPoint_(syncPoints, {\n key: 'segmentIndex',\n value: 0\n }); // If the sync-point is beyond the start of the playlist, we want to subtract the\n // duration from index 0 to syncPoint.segmentIndex instead of adding.\n\n if (syncPoint.segmentIndex > 0) {\n syncPoint.time *= -1;\n }\n\n return Math.abs(syncPoint.time + sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: syncPoint.segmentIndex,\n endIndex: 0\n }));\n }\n /**\n * Runs each sync-point strategy and returns a list of sync-points returned by the\n * strategies\n *\n * @private\n * @param {Playlist} playlist\n * The playlist that needs a sync-point\n * @param {number} duration\n * Duration of the MediaSource (Infinity if playing a live source)\n * @param {number} currentTimeline\n * The last timeline from which a segment was loaded\n * @return {Array}\n * A list of sync-point objects\n */\n ;\n\n _proto.runStrategies_ = function runStrategies_(playlist, duration, currentTimeline, currentTime) {\n var syncPoints = []; // Try to find a sync-point in by utilizing various strategies...\n\n for (var i = 0; i < syncPointStrategies.length; i++) {\n var strategy = syncPointStrategies[i];\n var syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime);\n\n if (syncPoint) {\n syncPoint.strategy = strategy.name;\n syncPoints.push({\n strategy: strategy.name,\n syncPoint: syncPoint\n });\n }\n }\n\n return syncPoints;\n }\n /**\n * Selects the sync-point nearest the specified target\n *\n * @private\n * @param {Array} syncPoints\n * List of sync-points to select from\n * @param {Object} target\n * Object specifying the property and value we are targeting\n * @param {string} target.key\n * Specifies the property to target. Must be either 'time' or 'segmentIndex'\n * @param {number} target.value\n * The value to target for the specified key.\n * @return {Object}\n * The sync-point nearest the target\n */\n ;\n\n _proto.selectSyncPoint_ = function selectSyncPoint_(syncPoints, target) {\n var bestSyncPoint = syncPoints[0].syncPoint;\n var bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);\n var bestStrategy = syncPoints[0].strategy;\n\n for (var i = 1; i < syncPoints.length; i++) {\n var newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);\n\n if (newDistance < bestDistance) {\n bestDistance = newDistance;\n bestSyncPoint = syncPoints[i].syncPoint;\n bestStrategy = syncPoints[i].strategy;\n }\n }\n\n this.logger_(\"syncPoint for [\" + target.key + \": \" + target.value + \"] chosen with strategy\" + (\" [\" + bestStrategy + \"]: [time:\" + bestSyncPoint.time + \",\") + (\" segmentIndex:\" + bestSyncPoint.segmentIndex) + (typeof bestSyncPoint.partIndex === 'number' ? \",partIndex:\" + bestSyncPoint.partIndex : '') + ']');\n return bestSyncPoint;\n }\n /**\n * Save any meta-data present on the segments when segments leave\n * the live window to the playlist to allow for synchronization at the\n * playlist level later.\n *\n * @param {Playlist} oldPlaylist - The previous active playlist\n * @param {Playlist} newPlaylist - The updated and most current playlist\n */\n ;\n\n _proto.saveExpiredSegmentInfo = function saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {\n var mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // Ignore large media sequence gaps\n\n if (mediaSequenceDiff > MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC) {\n videojs.log.warn(\"Not saving expired segment info. Media sequence gap \" + mediaSequenceDiff + \" is too large.\");\n return;\n } // When a segment expires from the playlist and it has a start time\n // save that information as a possible sync-point reference in future\n\n\n for (var i = mediaSequenceDiff - 1; i >= 0; i--) {\n var lastRemovedSegment = oldPlaylist.segments[i];\n\n if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {\n newPlaylist.syncInfo = {\n mediaSequence: oldPlaylist.mediaSequence + i,\n time: lastRemovedSegment.start\n };\n this.logger_(\"playlist refresh sync: [time:\" + newPlaylist.syncInfo.time + \",\" + (\" mediaSequence: \" + newPlaylist.syncInfo.mediaSequence + \"]\"));\n this.trigger('syncinfoupdate');\n break;\n }\n }\n }\n /**\n * Save the mapping from playlist's ProgramDateTime to display. This should only happen\n * before segments start to load.\n *\n * @param {Playlist} playlist - The currently active playlist\n */\n ;\n\n _proto.setDateTimeMappingForStart = function setDateTimeMappingForStart(playlist) {\n // It's possible for the playlist to be updated before playback starts, meaning time\n // zero is not yet set. If, during these playlist refreshes, a discontinuity is\n // crossed, then the old time zero mapping (for the prior timeline) would be retained\n // unless the mappings are cleared.\n this.timelineToDatetimeMappings = {};\n\n if (playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {\n var firstSegment = playlist.segments[0];\n var playlistTimestamp = firstSegment.dateTimeObject.getTime() / 1000;\n this.timelineToDatetimeMappings[firstSegment.timeline] = -playlistTimestamp;\n }\n }\n /**\n * Calculates and saves timeline mappings, playlist sync info, and segment timing values\n * based on the latest timing information.\n *\n * @param {Object} options\n * Options object\n * @param {SegmentInfo} options.segmentInfo\n * The current active request information\n * @param {boolean} options.shouldSaveTimelineMapping\n * If there's a timeline change, determines if the timeline mapping should be\n * saved for timeline mapping and program date time mappings.\n */\n ;\n\n _proto.saveSegmentTimingInfo = function saveSegmentTimingInfo(_ref) {\n var segmentInfo = _ref.segmentInfo,\n shouldSaveTimelineMapping = _ref.shouldSaveTimelineMapping;\n var didCalculateSegmentTimeMapping = this.calculateSegmentTimeMapping_(segmentInfo, segmentInfo.timingInfo, shouldSaveTimelineMapping);\n var segment = segmentInfo.segment;\n\n if (didCalculateSegmentTimeMapping) {\n this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information\n // now with segment timing information\n\n if (!segmentInfo.playlist.syncInfo) {\n segmentInfo.playlist.syncInfo = {\n mediaSequence: segmentInfo.playlist.mediaSequence + segmentInfo.mediaIndex,\n time: segment.start\n };\n }\n }\n\n var dateTime = segment.dateTimeObject;\n\n if (segment.discontinuity && shouldSaveTimelineMapping && dateTime) {\n this.timelineToDatetimeMappings[segment.timeline] = -(dateTime.getTime() / 1000);\n }\n };\n\n _proto.timestampOffsetForTimeline = function timestampOffsetForTimeline(timeline) {\n if (typeof this.timelines[timeline] === 'undefined') {\n return null;\n }\n\n return this.timelines[timeline].time;\n };\n\n _proto.mappingForTimeline = function mappingForTimeline(timeline) {\n if (typeof this.timelines[timeline] === 'undefined') {\n return null;\n }\n\n return this.timelines[timeline].mapping;\n }\n /**\n * Use the \"media time\" for a segment to generate a mapping to \"display time\" and\n * save that display time to the segment.\n *\n * @private\n * @param {SegmentInfo} segmentInfo\n * The current active request information\n * @param {Object} timingInfo\n * The start and end time of the current segment in \"media time\"\n * @param {boolean} shouldSaveTimelineMapping\n * If there's a timeline change, determines if the timeline mapping should be\n * saved in timelines.\n * @return {boolean}\n * Returns false if segment time mapping could not be calculated\n */\n ;\n\n _proto.calculateSegmentTimeMapping_ = function calculateSegmentTimeMapping_(segmentInfo, timingInfo, shouldSaveTimelineMapping) {\n // TODO: remove side effects\n var segment = segmentInfo.segment;\n var part = segmentInfo.part;\n var mappingObj = this.timelines[segmentInfo.timeline];\n var start;\n var end;\n\n if (typeof segmentInfo.timestampOffset === 'number') {\n mappingObj = {\n time: segmentInfo.startOfSegment,\n mapping: segmentInfo.startOfSegment - timingInfo.start\n };\n\n if (shouldSaveTimelineMapping) {\n this.timelines[segmentInfo.timeline] = mappingObj;\n this.trigger('timestampoffset');\n this.logger_(\"time mapping for timeline \" + segmentInfo.timeline + \": \" + (\"[time: \" + mappingObj.time + \"] [mapping: \" + mappingObj.mapping + \"]\"));\n }\n\n start = segmentInfo.startOfSegment;\n end = timingInfo.end + mappingObj.mapping;\n } else if (mappingObj) {\n start = timingInfo.start + mappingObj.mapping;\n end = timingInfo.end + mappingObj.mapping;\n } else {\n return false;\n }\n\n if (part) {\n part.start = start;\n part.end = end;\n } // If we don't have a segment start yet or the start value we got\n // is less than our current segment.start value, save a new start value.\n // We have to do this because parts will have segment timing info saved\n // multiple times and we want segment start to be the earliest part start\n // value for that segment.\n\n\n if (!segment.start || start < segment.start) {\n segment.start = start;\n }\n\n segment.end = end;\n return true;\n }\n /**\n * Each time we have discontinuity in the playlist, attempt to calculate the location\n * in display of the start of the discontinuity and save that. We also save an accuracy\n * value so that we save values with the most accuracy (closest to 0.)\n *\n * @private\n * @param {SegmentInfo} segmentInfo - The current active request information\n */\n ;\n\n _proto.saveDiscontinuitySyncInfo_ = function saveDiscontinuitySyncInfo_(segmentInfo) {\n var playlist = segmentInfo.playlist;\n var segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where\n // the start of the range and it's accuracy is 0 (greater accuracy values\n // mean more approximation)\n\n if (segment.discontinuity) {\n this.discontinuities[segment.timeline] = {\n time: segment.start,\n accuracy: 0\n };\n } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n // Search for future discontinuities that we can provide better timing\n // information for and save that information for sync purposes\n for (var i = 0; i < playlist.discontinuityStarts.length; i++) {\n var segmentIndex = playlist.discontinuityStarts[i];\n var discontinuity = playlist.discontinuitySequence + i + 1;\n var mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;\n var accuracy = Math.abs(mediaIndexDiff);\n\n if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {\n var time = void 0;\n\n if (mediaIndexDiff < 0) {\n time = segment.start - sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: segmentInfo.mediaIndex,\n endIndex: segmentIndex\n });\n } else {\n time = segment.end + sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: segmentInfo.mediaIndex + 1,\n endIndex: segmentIndex\n });\n }\n\n this.discontinuities[discontinuity] = {\n time: time,\n accuracy: accuracy\n };\n }\n }\n }\n };\n\n _proto.dispose = function dispose() {\n this.trigger('dispose');\n this.off();\n };\n\n return SyncController;\n}(videojs.EventTarget);\n/**\n * The TimelineChangeController acts as a source for segment loaders to listen for and\n * keep track of latest and pending timeline changes. This is useful to ensure proper\n * sync, as each loader may need to make a consideration for what timeline the other\n * loader is on before making changes which could impact the other loader's media.\n *\n * @class TimelineChangeController\n * @extends videojs.EventTarget\n */\n\n\nvar TimelineChangeController = /*#__PURE__*/function (_videojs$EventTarget) {\n _inheritsLoose(TimelineChangeController, _videojs$EventTarget);\n\n function TimelineChangeController() {\n var _this;\n\n _this = _videojs$EventTarget.call(this) || this;\n _this.pendingTimelineChanges_ = {};\n _this.lastTimelineChanges_ = {};\n return _this;\n }\n\n var _proto = TimelineChangeController.prototype;\n\n _proto.clearPendingTimelineChange = function clearPendingTimelineChange(type) {\n this.pendingTimelineChanges_[type] = null;\n this.trigger('pendingtimelinechange');\n };\n\n _proto.pendingTimelineChange = function pendingTimelineChange(_ref) {\n var type = _ref.type,\n from = _ref.from,\n to = _ref.to;\n\n if (typeof from === 'number' && typeof to === 'number') {\n this.pendingTimelineChanges_[type] = {\n type: type,\n from: from,\n to: to\n };\n this.trigger('pendingtimelinechange');\n }\n\n return this.pendingTimelineChanges_[type];\n };\n\n _proto.lastTimelineChange = function lastTimelineChange(_ref2) {\n var type = _ref2.type,\n from = _ref2.from,\n to = _ref2.to;\n\n if (typeof from === 'number' && typeof to === 'number') {\n this.lastTimelineChanges_[type] = {\n type: type,\n from: from,\n to: to\n };\n delete this.pendingTimelineChanges_[type];\n this.trigger('timelinechange');\n }\n\n return this.lastTimelineChanges_[type];\n };\n\n _proto.dispose = function dispose() {\n this.trigger('dispose');\n this.pendingTimelineChanges_ = {};\n this.lastTimelineChanges_ = {};\n this.off();\n };\n\n return TimelineChangeController;\n}(videojs.EventTarget);\n/* rollup-plugin-worker-factory start for worker!/Users/ddashkevich/projects/http-streaming/src/decrypter-worker.js */\n\n\nvar workerCode = transform(getWorkerString(function () {\n var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n\n function createCommonjsModule(fn, basedir, module) {\n return module = {\n path: basedir,\n exports: {},\n require: function require(path, base) {\n return commonjsRequire(path, base === undefined || base === null ? module.path : base);\n }\n }, fn(module, module.exports), module.exports;\n }\n\n function commonjsRequire() {\n throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');\n }\n\n var createClass = createCommonjsModule(function (module) {\n function _defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n }\n\n function _createClass(Constructor, protoProps, staticProps) {\n if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n if (staticProps) _defineProperties(Constructor, staticProps);\n return Constructor;\n }\n\n module.exports = _createClass;\n module.exports[\"default\"] = module.exports, module.exports.__esModule = true;\n });\n var setPrototypeOf = createCommonjsModule(function (module) {\n function _setPrototypeOf(o, p) {\n module.exports = _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {\n o.__proto__ = p;\n return o;\n };\n\n module.exports[\"default\"] = module.exports, module.exports.__esModule = true;\n return _setPrototypeOf(o, p);\n }\n\n module.exports = _setPrototypeOf;\n module.exports[\"default\"] = module.exports, module.exports.__esModule = true;\n });\n var inheritsLoose = createCommonjsModule(function (module) {\n function _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n setPrototypeOf(subClass, superClass);\n }\n\n module.exports = _inheritsLoose;\n module.exports[\"default\"] = module.exports, module.exports.__esModule = true;\n });\n /**\n * @file stream.js\n */\n\n /**\n * A lightweight readable stream implemention that handles event dispatching.\n *\n * @class Stream\n */\n\n var Stream = /*#__PURE__*/function () {\n function Stream() {\n this.listeners = {};\n }\n /**\n * Add a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener the callback to be invoked when an event of\n * the specified type occurs\n */\n\n\n var _proto = Stream.prototype;\n\n _proto.on = function on(type, listener) {\n if (!this.listeners[type]) {\n this.listeners[type] = [];\n }\n\n this.listeners[type].push(listener);\n }\n /**\n * Remove a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener a function previously registered for this\n * type of event through `on`\n * @return {boolean} if we could turn it off or not\n */\n ;\n\n _proto.off = function off(type, listener) {\n if (!this.listeners[type]) {\n return false;\n }\n\n var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n // In Video.js we slice listener functions\n // on trigger so that it does not mess up the order\n // while we loop through.\n //\n // Here we slice on off so that the loop in trigger\n // can continue using it's old reference to loop without\n // messing up the order.\n\n this.listeners[type] = this.listeners[type].slice(0);\n this.listeners[type].splice(index, 1);\n return index > -1;\n }\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n *\n * @param {string} type the event name\n */\n ;\n\n _proto.trigger = function trigger(type) {\n var callbacks = this.listeners[type];\n\n if (!callbacks) {\n return;\n } // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n\n\n if (arguments.length === 2) {\n var length = callbacks.length;\n\n for (var i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n var args = Array.prototype.slice.call(arguments, 1);\n var _length = callbacks.length;\n\n for (var _i = 0; _i < _length; ++_i) {\n callbacks[_i].apply(this, args);\n }\n }\n }\n /**\n * Destroys the stream and cleans up.\n */\n ;\n\n _proto.dispose = function dispose() {\n this.listeners = {};\n }\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n *\n * @param {Stream} destination the stream that will receive all `data` events\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */\n ;\n\n _proto.pipe = function pipe(destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n };\n\n return Stream;\n }();\n /*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */\n\n /**\n * Returns the subarray of a Uint8Array without PKCS#7 padding.\n *\n * @param padded {Uint8Array} unencrypted bytes that have been padded\n * @return {Uint8Array} the unpadded bytes\n * @see http://tools.ietf.org/html/rfc5652\n */\n\n\n function unpad(padded) {\n return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);\n }\n /*! @name aes-decrypter @version 3.1.3 @license Apache-2.0 */\n\n /**\n * @file aes.js\n *\n * This file contains an adaptation of the AES decryption algorithm\n * from the Standford Javascript Cryptography Library. That work is\n * covered by the following copyright and permissions notice:\n *\n * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.\n * All rights reserved.\n *\n * Redistribution and use in source and binary forms, with or without\n * modification, are permitted provided that the following conditions are\n * met:\n *\n * 1. Redistributions of source code must retain the above copyright\n * notice, this list of conditions and the following disclaimer.\n *\n * 2. Redistributions in binary form must reproduce the above\n * copyright notice, this list of conditions and the following\n * disclaimer in the documentation and/or other materials provided\n * with the distribution.\n *\n * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR\n * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n * DISCLAIMED. IN NO EVENT SHALL OR CONTRIBUTORS BE\n * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN\n * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n *\n * The views and conclusions contained in the software and documentation\n * are those of the authors and should not be interpreted as representing\n * official policies, either expressed or implied, of the authors.\n */\n\n /**\n * Expand the S-box tables.\n *\n * @private\n */\n\n\n var precompute = function precompute() {\n var tables = [[[], [], [], [], []], [[], [], [], [], []]];\n var encTable = tables[0];\n var decTable = tables[1];\n var sbox = encTable[4];\n var sboxInv = decTable[4];\n var i;\n var x;\n var xInv;\n var d = [];\n var th = [];\n var x2;\n var x4;\n var x8;\n var s;\n var tEnc;\n var tDec; // Compute double and third tables\n\n for (i = 0; i < 256; i++) {\n th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;\n }\n\n for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {\n // Compute sbox\n s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;\n s = s >> 8 ^ s & 255 ^ 99;\n sbox[x] = s;\n sboxInv[s] = x; // Compute MixColumns\n\n x8 = d[x4 = d[x2 = d[x]]];\n tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;\n tEnc = d[s] * 0x101 ^ s * 0x1010100;\n\n for (i = 0; i < 4; i++) {\n encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;\n decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;\n }\n } // Compactify. Considerable speedup on Firefox.\n\n\n for (i = 0; i < 5; i++) {\n encTable[i] = encTable[i].slice(0);\n decTable[i] = decTable[i].slice(0);\n }\n\n return tables;\n };\n\n var aesTables = null;\n /**\n * Schedule out an AES key for both encryption and decryption. This\n * is a low-level class. Use a cipher mode to do bulk encryption.\n *\n * @class AES\n * @param key {Array} The key as an array of 4, 6 or 8 words.\n */\n\n var AES = /*#__PURE__*/function () {\n function AES(key) {\n /**\n * The expanded S-box and inverse S-box tables. These will be computed\n * on the client so that we don't have to send them down the wire.\n *\n * There are two tables, _tables[0] is for encryption and\n * _tables[1] is for decryption.\n *\n * The first 4 sub-tables are the expanded S-box with MixColumns. The\n * last (_tables[01][4]) is the S-box itself.\n *\n * @private\n */\n // if we have yet to precompute the S-box tables\n // do so now\n if (!aesTables) {\n aesTables = precompute();\n } // then make a copy of that object for use\n\n\n this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];\n var i;\n var j;\n var tmp;\n var sbox = this._tables[0][4];\n var decTable = this._tables[1];\n var keyLen = key.length;\n var rcon = 1;\n\n if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {\n throw new Error('Invalid aes key size');\n }\n\n var encKey = key.slice(0);\n var decKey = [];\n this._key = [encKey, decKey]; // schedule encryption keys\n\n for (i = keyLen; i < 4 * keyLen + 28; i++) {\n tmp = encKey[i - 1]; // apply sbox\n\n if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {\n tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon\n\n if (i % keyLen === 0) {\n tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;\n rcon = rcon << 1 ^ (rcon >> 7) * 283;\n }\n }\n\n encKey[i] = encKey[i - keyLen] ^ tmp;\n } // schedule decryption keys\n\n\n for (j = 0; i; j++, i--) {\n tmp = encKey[j & 3 ? i : i - 4];\n\n if (i <= 4 || j < 4) {\n decKey[j] = tmp;\n } else {\n decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];\n }\n }\n }\n /**\n * Decrypt 16 bytes, specified as four 32-bit words.\n *\n * @param {number} encrypted0 the first word to decrypt\n * @param {number} encrypted1 the second word to decrypt\n * @param {number} encrypted2 the third word to decrypt\n * @param {number} encrypted3 the fourth word to decrypt\n * @param {Int32Array} out the array to write the decrypted words\n * into\n * @param {number} offset the offset into the output array to start\n * writing results\n * @return {Array} The plaintext.\n */\n\n\n var _proto = AES.prototype;\n\n _proto.decrypt = function decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {\n var key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data\n\n var a = encrypted0 ^ key[0];\n var b = encrypted3 ^ key[1];\n var c = encrypted2 ^ key[2];\n var d = encrypted1 ^ key[3];\n var a2;\n var b2;\n var c2; // key.length === 2 ?\n\n var nInnerRounds = key.length / 4 - 2;\n var i;\n var kIndex = 4;\n var table = this._tables[1]; // load up the tables\n\n var table0 = table[0];\n var table1 = table[1];\n var table2 = table[2];\n var table3 = table[3];\n var sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.\n\n for (i = 0; i < nInnerRounds; i++) {\n a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];\n b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];\n c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];\n d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];\n kIndex += 4;\n a = a2;\n b = b2;\n c = c2;\n } // Last round.\n\n\n for (i = 0; i < 4; i++) {\n out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];\n a2 = a;\n a = b;\n b = c;\n c = d;\n d = a2;\n }\n };\n\n return AES;\n }();\n /**\n * A wrapper around the Stream class to use setTimeout\n * and run stream \"jobs\" Asynchronously\n *\n * @class AsyncStream\n * @extends Stream\n */\n\n\n var AsyncStream = /*#__PURE__*/function (_Stream) {\n inheritsLoose(AsyncStream, _Stream);\n\n function AsyncStream() {\n var _this;\n\n _this = _Stream.call(this, Stream) || this;\n _this.jobs = [];\n _this.delay = 1;\n _this.timeout_ = null;\n return _this;\n }\n /**\n * process an async job\n *\n * @private\n */\n\n\n var _proto = AsyncStream.prototype;\n\n _proto.processJob_ = function processJob_() {\n this.jobs.shift()();\n\n if (this.jobs.length) {\n this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n } else {\n this.timeout_ = null;\n }\n }\n /**\n * push a job into the stream\n *\n * @param {Function} job the job to push into the stream\n */\n ;\n\n _proto.push = function push(job) {\n this.jobs.push(job);\n\n if (!this.timeout_) {\n this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n }\n };\n\n return AsyncStream;\n }(Stream);\n /**\n * Convert network-order (big-endian) bytes into their little-endian\n * representation.\n */\n\n\n var ntoh = function ntoh(word) {\n return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;\n };\n /**\n * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.\n *\n * @param {Uint8Array} encrypted the encrypted bytes\n * @param {Uint32Array} key the bytes of the decryption key\n * @param {Uint32Array} initVector the initialization vector (IV) to\n * use for the first round of CBC.\n * @return {Uint8Array} the decrypted bytes\n *\n * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard\n * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29\n * @see https://tools.ietf.org/html/rfc2315\n */\n\n\n var decrypt = function decrypt(encrypted, key, initVector) {\n // word-level access to the encrypted bytes\n var encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);\n var decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output\n\n var decrypted = new Uint8Array(encrypted.byteLength);\n var decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and\n // decrypted data\n\n var init0;\n var init1;\n var init2;\n var init3;\n var encrypted0;\n var encrypted1;\n var encrypted2;\n var encrypted3; // iteration variable\n\n var wordIx; // pull out the words of the IV to ensure we don't modify the\n // passed-in reference and easier access\n\n init0 = initVector[0];\n init1 = initVector[1];\n init2 = initVector[2];\n init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)\n // to each decrypted block\n\n for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {\n // convert big-endian (network order) words into little-endian\n // (javascript order)\n encrypted0 = ntoh(encrypted32[wordIx]);\n encrypted1 = ntoh(encrypted32[wordIx + 1]);\n encrypted2 = ntoh(encrypted32[wordIx + 2]);\n encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block\n\n decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the\n // plaintext\n\n decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);\n decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);\n decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);\n decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round\n\n init0 = encrypted0;\n init1 = encrypted1;\n init2 = encrypted2;\n init3 = encrypted3;\n }\n\n return decrypted;\n };\n /**\n * The `Decrypter` class that manages decryption of AES\n * data through `AsyncStream` objects and the `decrypt`\n * function\n *\n * @param {Uint8Array} encrypted the encrypted bytes\n * @param {Uint32Array} key the bytes of the decryption key\n * @param {Uint32Array} initVector the initialization vector (IV) to\n * @param {Function} done the function to run when done\n * @class Decrypter\n */\n\n\n var Decrypter = /*#__PURE__*/function () {\n function Decrypter(encrypted, key, initVector, done) {\n var step = Decrypter.STEP;\n var encrypted32 = new Int32Array(encrypted.buffer);\n var decrypted = new Uint8Array(encrypted.byteLength);\n var i = 0;\n this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously\n\n this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n\n for (i = step; i < encrypted32.length; i += step) {\n initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);\n this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n } // invoke the done() callback when everything is finished\n\n\n this.asyncStream_.push(function () {\n // remove pkcs#7 padding from the decrypted bytes\n done(null, unpad(decrypted));\n });\n }\n /**\n * a getter for step the maximum number of bytes to process at one time\n *\n * @return {number} the value of step 32000\n */\n\n\n var _proto = Decrypter.prototype;\n /**\n * @private\n */\n\n _proto.decryptChunk_ = function decryptChunk_(encrypted, key, initVector, decrypted) {\n return function () {\n var bytes = decrypt(encrypted, key, initVector);\n decrypted.set(bytes, encrypted.byteOffset);\n };\n };\n\n createClass(Decrypter, null, [{\n key: \"STEP\",\n get: function get() {\n // 4 * 8000;\n return 32000;\n }\n }]);\n return Decrypter;\n }();\n\n var win;\n\n if (typeof window !== \"undefined\") {\n win = window;\n } else if (typeof commonjsGlobal !== \"undefined\") {\n win = commonjsGlobal;\n } else if (typeof self !== \"undefined\") {\n win = self;\n } else {\n win = {};\n }\n\n var window_1 = win;\n\n var isArrayBufferView = function isArrayBufferView(obj) {\n if (ArrayBuffer.isView === 'function') {\n return ArrayBuffer.isView(obj);\n }\n\n return obj && obj.buffer instanceof ArrayBuffer;\n };\n\n var BigInt = window_1.BigInt || Number;\n [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\n /**\n * Creates an object for sending to a web worker modifying properties that are TypedArrays\n * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n *\n * @param {Object} message\n * Object of properties and values to send to the web worker\n * @return {Object}\n * Modified message with TypedArray values expanded\n * @function createTransferableMessage\n */\n\n\n var createTransferableMessage = function createTransferableMessage(message) {\n var transferable = {};\n Object.keys(message).forEach(function (key) {\n var value = message[key];\n\n if (isArrayBufferView(value)) {\n transferable[key] = {\n bytes: value.buffer,\n byteOffset: value.byteOffset,\n byteLength: value.byteLength\n };\n } else {\n transferable[key] = value;\n }\n });\n return transferable;\n };\n /* global self */\n\n /**\n * Our web worker interface so that things can talk to aes-decrypter\n * that will be running in a web worker. the scope is passed to this by\n * webworkify.\n */\n\n\n self.onmessage = function (event) {\n var data = event.data;\n var encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);\n var key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);\n var iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);\n /* eslint-disable no-new, handle-callback-err */\n\n new Decrypter(encrypted, key, iv, function (err, bytes) {\n self.postMessage(createTransferableMessage({\n source: data.source,\n decrypted: bytes\n }), [bytes.buffer]);\n });\n /* eslint-enable */\n };\n}));\nvar Decrypter = factory(workerCode);\n/* rollup-plugin-worker-factory end for worker!/Users/ddashkevich/projects/http-streaming/src/decrypter-worker.js */\n\n/**\n * Convert the properties of an HLS track into an audioTrackKind.\n *\n * @private\n */\n\nvar audioTrackKind_ = function audioTrackKind_(properties) {\n var kind = properties[\"default\"] ? 'main' : 'alternative';\n\n if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {\n kind = 'main-desc';\n }\n\n return kind;\n};\n/**\n * Pause provided segment loader and playlist loader if active\n *\n * @param {SegmentLoader} segmentLoader\n * SegmentLoader to pause\n * @param {Object} mediaType\n * Active media type\n * @function stopLoaders\n */\n\n\nvar stopLoaders = function stopLoaders(segmentLoader, mediaType) {\n segmentLoader.abort();\n segmentLoader.pause();\n\n if (mediaType && mediaType.activePlaylistLoader) {\n mediaType.activePlaylistLoader.pause();\n mediaType.activePlaylistLoader = null;\n }\n};\n/**\n * Start loading provided segment loader and playlist loader\n *\n * @param {PlaylistLoader} playlistLoader\n * PlaylistLoader to start loading\n * @param {Object} mediaType\n * Active media type\n * @function startLoaders\n */\n\n\nvar startLoaders = function startLoaders(playlistLoader, mediaType) {\n // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the\n // playlist loader\n mediaType.activePlaylistLoader = playlistLoader;\n playlistLoader.load();\n};\n/**\n * Returns a function to be called when the media group changes. It performs a\n * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a\n * change of group is merely a rendition switch of the same content at another encoding,\n * rather than a change of content, such as switching audio from English to Spanish.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Handler for a non-destructive resync of SegmentLoader when the active media\n * group changes.\n * @function onGroupChanged\n */\n\n\nvar onGroupChanged = function onGroupChanged(type, settings) {\n return function () {\n var _settings$segmentLoad = settings.segmentLoaders,\n segmentLoader = _settings$segmentLoad[type],\n mainSegmentLoader = _settings$segmentLoad.main,\n mediaType = settings.mediaTypes[type];\n var activeTrack = mediaType.activeTrack();\n var activeGroup = mediaType.getActiveGroup();\n var previousActiveLoader = mediaType.activePlaylistLoader;\n var lastGroup = mediaType.lastGroup_; // the group did not change do nothing\n\n if (activeGroup && lastGroup && activeGroup.id === lastGroup.id) {\n return;\n }\n\n mediaType.lastGroup_ = activeGroup;\n mediaType.lastTrack_ = activeTrack;\n stopLoaders(segmentLoader, mediaType);\n\n if (!activeGroup || activeGroup.isMasterPlaylist) {\n // there is no group active or active group is a main playlist and won't change\n return;\n }\n\n if (!activeGroup.playlistLoader) {\n if (previousActiveLoader) {\n // The previous group had a playlist loader but the new active group does not\n // this means we are switching from demuxed to muxed audio. In this case we want to\n // do a destructive reset of the main segment loader and not restart the audio\n // loaders.\n mainSegmentLoader.resetEverything();\n }\n\n return;\n } // Non-destructive resync\n\n\n segmentLoader.resyncLoader();\n startLoaders(activeGroup.playlistLoader, mediaType);\n };\n};\n\nvar onGroupChanging = function onGroupChanging(type, settings) {\n return function () {\n var segmentLoader = settings.segmentLoaders[type],\n mediaType = settings.mediaTypes[type];\n mediaType.lastGroup_ = null;\n segmentLoader.abort();\n segmentLoader.pause();\n };\n};\n/**\n * Returns a function to be called when the media track changes. It performs a\n * destructive reset of the SegmentLoader to ensure we start loading as close to\n * currentTime as possible.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Handler for a destructive reset of SegmentLoader when the active media\n * track changes.\n * @function onTrackChanged\n */\n\n\nvar onTrackChanged = function onTrackChanged(type, settings) {\n return function () {\n var masterPlaylistLoader = settings.masterPlaylistLoader,\n _settings$segmentLoad2 = settings.segmentLoaders,\n segmentLoader = _settings$segmentLoad2[type],\n mainSegmentLoader = _settings$segmentLoad2.main,\n mediaType = settings.mediaTypes[type];\n var activeTrack = mediaType.activeTrack();\n var activeGroup = mediaType.getActiveGroup();\n var previousActiveLoader = mediaType.activePlaylistLoader;\n var lastTrack = mediaType.lastTrack_; // track did not change, do nothing\n\n if (lastTrack && activeTrack && lastTrack.id === activeTrack.id) {\n return;\n }\n\n mediaType.lastGroup_ = activeGroup;\n mediaType.lastTrack_ = activeTrack;\n stopLoaders(segmentLoader, mediaType);\n\n if (!activeGroup) {\n // there is no group active so we do not want to restart loaders\n return;\n }\n\n if (activeGroup.isMasterPlaylist) {\n // track did not change, do nothing\n if (!activeTrack || !lastTrack || activeTrack.id === lastTrack.id) {\n return;\n }\n\n var mpc = settings.vhs.masterPlaylistController_;\n var newPlaylist = mpc.selectPlaylist(); // media will not change do nothing\n\n if (mpc.media() === newPlaylist) {\n return;\n }\n\n mediaType.logger_(\"track change. Switching master audio from \" + lastTrack.id + \" to \" + activeTrack.id);\n masterPlaylistLoader.pause();\n mainSegmentLoader.resetEverything();\n mpc.fastQualityChange_(newPlaylist);\n return;\n }\n\n if (type === 'AUDIO') {\n if (!activeGroup.playlistLoader) {\n // when switching from demuxed audio/video to muxed audio/video (noted by no\n // playlist loader for the audio group), we want to do a destructive reset of the\n // main segment loader and not restart the audio loaders\n mainSegmentLoader.setAudio(true); // don't have to worry about disabling the audio of the audio segment loader since\n // it should be stopped\n\n mainSegmentLoader.resetEverything();\n return;\n } // although the segment loader is an audio segment loader, call the setAudio\n // function to ensure it is prepared to re-append the init segment (or handle other\n // config changes)\n\n\n segmentLoader.setAudio(true);\n mainSegmentLoader.setAudio(false);\n }\n\n if (previousActiveLoader === activeGroup.playlistLoader) {\n // Nothing has actually changed. This can happen because track change events can fire\n // multiple times for a \"single\" change. One for enabling the new active track, and\n // one for disabling the track that was active\n startLoaders(activeGroup.playlistLoader, mediaType);\n return;\n }\n\n if (segmentLoader.track) {\n // For WebVTT, set the new text track in the segmentloader\n segmentLoader.track(activeTrack);\n } // destructive reset\n\n\n segmentLoader.resetEverything();\n startLoaders(activeGroup.playlistLoader, mediaType);\n };\n};\n\nvar onError = {\n /**\n * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n * an error.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Error handler. Logs warning (or error if the playlist is blacklisted) to\n * console and switches back to default audio track.\n * @function onError.AUDIO\n */\n AUDIO: function AUDIO(type, settings) {\n return function () {\n var segmentLoader = settings.segmentLoaders[type],\n mediaType = settings.mediaTypes[type],\n blacklistCurrentPlaylist = settings.blacklistCurrentPlaylist;\n stopLoaders(segmentLoader, mediaType); // switch back to default audio track\n\n var activeTrack = mediaType.activeTrack();\n var activeGroup = mediaType.activeGroup();\n var id = (activeGroup.filter(function (group) {\n return group[\"default\"];\n })[0] || activeGroup[0]).id;\n var defaultTrack = mediaType.tracks[id];\n\n if (activeTrack === defaultTrack) {\n // Default track encountered an error. All we can do now is blacklist the current\n // rendition and hope another will switch audio groups\n blacklistCurrentPlaylist({\n message: 'Problem encountered loading the default audio track.'\n });\n return;\n }\n\n videojs.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');\n\n for (var trackId in mediaType.tracks) {\n mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;\n }\n\n mediaType.onTrackChanged();\n };\n },\n\n /**\n * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n * an error.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Error handler. Logs warning to console and disables the active subtitle track\n * @function onError.SUBTITLES\n */\n SUBTITLES: function SUBTITLES(type, settings) {\n return function () {\n var segmentLoader = settings.segmentLoaders[type],\n mediaType = settings.mediaTypes[type];\n videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');\n stopLoaders(segmentLoader, mediaType);\n var track = mediaType.activeTrack();\n\n if (track) {\n track.mode = 'disabled';\n }\n\n mediaType.onTrackChanged();\n };\n }\n};\nvar setupListeners = {\n /**\n * Setup event listeners for audio playlist loader\n *\n * @param {string} type\n * MediaGroup type\n * @param {PlaylistLoader|null} playlistLoader\n * PlaylistLoader to register listeners on\n * @param {Object} settings\n * Object containing required information for media groups\n * @function setupListeners.AUDIO\n */\n AUDIO: function AUDIO(type, playlistLoader, settings) {\n if (!playlistLoader) {\n // no playlist loader means audio will be muxed with the video\n return;\n }\n\n var tech = settings.tech,\n requestOptions = settings.requestOptions,\n segmentLoader = settings.segmentLoaders[type];\n playlistLoader.on('loadedmetadata', function () {\n var media = playlistLoader.media();\n segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload\n // permits, start downloading segments\n\n if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n segmentLoader.load();\n }\n });\n playlistLoader.on('loadedplaylist', function () {\n segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n if (!tech.paused()) {\n segmentLoader.load();\n }\n });\n playlistLoader.on('error', onError[type](type, settings));\n },\n\n /**\n * Setup event listeners for subtitle playlist loader\n *\n * @param {string} type\n * MediaGroup type\n * @param {PlaylistLoader|null} playlistLoader\n * PlaylistLoader to register listeners on\n * @param {Object} settings\n * Object containing required information for media groups\n * @function setupListeners.SUBTITLES\n */\n SUBTITLES: function SUBTITLES(type, playlistLoader, settings) {\n var tech = settings.tech,\n requestOptions = settings.requestOptions,\n segmentLoader = settings.segmentLoaders[type],\n mediaType = settings.mediaTypes[type];\n playlistLoader.on('loadedmetadata', function () {\n var media = playlistLoader.media();\n segmentLoader.playlist(media, requestOptions);\n segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload\n // permits, start downloading segments\n\n if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n segmentLoader.load();\n }\n });\n playlistLoader.on('loadedplaylist', function () {\n segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n if (!tech.paused()) {\n segmentLoader.load();\n }\n });\n playlistLoader.on('error', onError[type](type, settings));\n }\n};\nvar initialize = {\n /**\n * Setup PlaylistLoaders and AudioTracks for the audio groups\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize.AUDIO\n */\n 'AUDIO': function AUDIO(type, settings) {\n var vhs = settings.vhs,\n sourceType = settings.sourceType,\n segmentLoader = settings.segmentLoaders[type],\n requestOptions = settings.requestOptions,\n mediaGroups = settings.master.mediaGroups,\n _settings$mediaTypes$ = settings.mediaTypes[type],\n groups = _settings$mediaTypes$.groups,\n tracks = _settings$mediaTypes$.tracks,\n logger_ = _settings$mediaTypes$.logger_,\n masterPlaylistLoader = settings.masterPlaylistLoader;\n var audioOnlyMaster = isAudioOnly(masterPlaylistLoader.master); // force a default if we have none\n\n if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {\n mediaGroups[type] = {\n main: {\n \"default\": {\n \"default\": true\n }\n }\n };\n\n if (audioOnlyMaster) {\n mediaGroups[type].main[\"default\"].playlists = masterPlaylistLoader.master.playlists;\n }\n }\n\n for (var groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n\n for (var variantLabel in mediaGroups[type][groupId]) {\n var properties = mediaGroups[type][groupId][variantLabel];\n var playlistLoader = void 0;\n\n if (audioOnlyMaster) {\n logger_(\"AUDIO group '\" + groupId + \"' label '\" + variantLabel + \"' is a master playlist\");\n properties.isMasterPlaylist = true;\n playlistLoader = null; // if vhs-json was provided as the source, and the media playlist was resolved,\n // use the resolved media playlist object\n } else if (sourceType === 'vhs-json' && properties.playlists) {\n playlistLoader = new PlaylistLoader(properties.playlists[0], vhs, requestOptions);\n } else if (properties.resolvedUri) {\n playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions); // TODO: dash isn't the only type with properties.playlists\n // should we even have properties.playlists in this check.\n } else if (properties.playlists && sourceType === 'dash') {\n playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, masterPlaylistLoader);\n } else {\n // no resolvedUri means the audio is muxed with the video when using this\n // audio track\n playlistLoader = null;\n }\n\n properties = videojs.mergeOptions({\n id: variantLabel,\n playlistLoader: playlistLoader\n }, properties);\n setupListeners[type](type, properties.playlistLoader, settings);\n groups[groupId].push(properties);\n\n if (typeof tracks[variantLabel] === 'undefined') {\n var track = new videojs.AudioTrack({\n id: variantLabel,\n kind: audioTrackKind_(properties),\n enabled: false,\n language: properties.language,\n \"default\": properties[\"default\"],\n label: variantLabel\n });\n tracks[variantLabel] = track;\n }\n }\n } // setup single error event handler for the segment loader\n\n\n segmentLoader.on('error', onError[type](type, settings));\n },\n\n /**\n * Setup PlaylistLoaders and TextTracks for the subtitle groups\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize.SUBTITLES\n */\n 'SUBTITLES': function SUBTITLES(type, settings) {\n var tech = settings.tech,\n vhs = settings.vhs,\n sourceType = settings.sourceType,\n segmentLoader = settings.segmentLoaders[type],\n requestOptions = settings.requestOptions,\n mediaGroups = settings.master.mediaGroups,\n _settings$mediaTypes$2 = settings.mediaTypes[type],\n groups = _settings$mediaTypes$2.groups,\n tracks = _settings$mediaTypes$2.tracks,\n masterPlaylistLoader = settings.masterPlaylistLoader;\n\n for (var groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n\n for (var variantLabel in mediaGroups[type][groupId]) {\n if (mediaGroups[type][groupId][variantLabel].forced) {\n // Subtitle playlists with the forced attribute are not selectable in Safari.\n // According to Apple's HLS Authoring Specification:\n // If content has forced subtitles and regular subtitles in a given language,\n // the regular subtitles track in that language MUST contain both the forced\n // subtitles and the regular subtitles for that language.\n // Because of this requirement and that Safari does not add forced subtitles,\n // forced subtitles are skipped here to maintain consistent experience across\n // all platforms\n continue;\n }\n\n var properties = mediaGroups[type][groupId][variantLabel];\n var playlistLoader = void 0;\n\n if (sourceType === 'hls') {\n playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions);\n } else if (sourceType === 'dash') {\n var playlists = properties.playlists.filter(function (p) {\n return p.excludeUntil !== Infinity;\n });\n\n if (!playlists.length) {\n return;\n }\n\n playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, masterPlaylistLoader);\n } else if (sourceType === 'vhs-json') {\n playlistLoader = new PlaylistLoader( // if the vhs-json object included the media playlist, use the media playlist\n // as provided, otherwise use the resolved URI to load the playlist\n properties.playlists ? properties.playlists[0] : properties.resolvedUri, vhs, requestOptions);\n }\n\n properties = videojs.mergeOptions({\n id: variantLabel,\n playlistLoader: playlistLoader\n }, properties);\n setupListeners[type](type, properties.playlistLoader, settings);\n groups[groupId].push(properties);\n\n if (typeof tracks[variantLabel] === 'undefined') {\n var track = tech.addRemoteTextTrack({\n id: variantLabel,\n kind: 'subtitles',\n \"default\": properties[\"default\"] && properties.autoselect,\n language: properties.language,\n label: variantLabel\n }, false).track;\n tracks[variantLabel] = track;\n }\n }\n } // setup single error event handler for the segment loader\n\n\n segmentLoader.on('error', onError[type](type, settings));\n },\n\n /**\n * Setup TextTracks for the closed-caption groups\n *\n * @param {String} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize['CLOSED-CAPTIONS']\n */\n 'CLOSED-CAPTIONS': function CLOSEDCAPTIONS(type, settings) {\n var tech = settings.tech,\n mediaGroups = settings.master.mediaGroups,\n _settings$mediaTypes$3 = settings.mediaTypes[type],\n groups = _settings$mediaTypes$3.groups,\n tracks = _settings$mediaTypes$3.tracks;\n\n for (var groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n\n for (var variantLabel in mediaGroups[type][groupId]) {\n var properties = mediaGroups[type][groupId][variantLabel]; // Look for either 608 (CCn) or 708 (SERVICEn) caption services\n\n if (!/^(?:CC|SERVICE)/.test(properties.instreamId)) {\n continue;\n }\n\n var captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n var newProps = {\n label: variantLabel,\n language: properties.language,\n instreamId: properties.instreamId,\n \"default\": properties[\"default\"] && properties.autoselect\n };\n\n if (captionServices[newProps.instreamId]) {\n newProps = videojs.mergeOptions(newProps, captionServices[newProps.instreamId]);\n }\n\n if (newProps[\"default\"] === undefined) {\n delete newProps[\"default\"];\n } // No PlaylistLoader is required for Closed-Captions because the captions are\n // embedded within the video stream\n\n\n groups[groupId].push(videojs.mergeOptions({\n id: variantLabel\n }, properties));\n\n if (typeof tracks[variantLabel] === 'undefined') {\n var track = tech.addRemoteTextTrack({\n id: newProps.instreamId,\n kind: 'captions',\n \"default\": newProps[\"default\"],\n language: newProps.language,\n label: newProps.label\n }, false).track;\n tracks[variantLabel] = track;\n }\n }\n }\n }\n};\n\nvar groupMatch = function groupMatch(list, media) {\n for (var i = 0; i < list.length; i++) {\n if (playlistMatch(media, list[i])) {\n return true;\n }\n\n if (list[i].playlists && groupMatch(list[i].playlists, media)) {\n return true;\n }\n }\n\n return false;\n};\n/**\n * Returns a function used to get the active group of the provided type\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media group for the provided type. Takes an\n * optional parameter {TextTrack} track. If no track is provided, a list of all\n * variants in the group, otherwise the variant corresponding to the provided\n * track is returned.\n * @function activeGroup\n */\n\n\nvar activeGroup = function activeGroup(type, settings) {\n return function (track) {\n var masterPlaylistLoader = settings.masterPlaylistLoader,\n groups = settings.mediaTypes[type].groups;\n var media = masterPlaylistLoader.media();\n\n if (!media) {\n return null;\n }\n\n var variants = null; // set to variants to main media active group\n\n if (media.attributes[type]) {\n variants = groups[media.attributes[type]];\n }\n\n var groupKeys = Object.keys(groups);\n\n if (!variants) {\n // find the masterPlaylistLoader media\n // that is in a media group if we are dealing\n // with audio only\n if (type === 'AUDIO' && groupKeys.length > 1 && isAudioOnly(settings.master)) {\n for (var i = 0; i < groupKeys.length; i++) {\n var groupPropertyList = groups[groupKeys[i]];\n\n if (groupMatch(groupPropertyList, media)) {\n variants = groupPropertyList;\n break;\n }\n } // use the main group if it exists\n\n } else if (groups.main) {\n variants = groups.main; // only one group, use that one\n } else if (groupKeys.length === 1) {\n variants = groups[groupKeys[0]];\n }\n }\n\n if (typeof track === 'undefined') {\n return variants;\n }\n\n if (track === null || !variants) {\n // An active track was specified so a corresponding group is expected. track === null\n // means no track is currently active so there is no corresponding group\n return null;\n }\n\n return variants.filter(function (props) {\n return props.id === track.id;\n })[0] || null;\n };\n};\n\nvar activeTrack = {\n /**\n * Returns a function used to get the active track of type provided\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media track for the provided type. Returns\n * null if no track is active\n * @function activeTrack.AUDIO\n */\n AUDIO: function AUDIO(type, settings) {\n return function () {\n var tracks = settings.mediaTypes[type].tracks;\n\n for (var id in tracks) {\n if (tracks[id].enabled) {\n return tracks[id];\n }\n }\n\n return null;\n };\n },\n\n /**\n * Returns a function used to get the active track of type provided\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media track for the provided type. Returns\n * null if no track is active\n * @function activeTrack.SUBTITLES\n */\n SUBTITLES: function SUBTITLES(type, settings) {\n return function () {\n var tracks = settings.mediaTypes[type].tracks;\n\n for (var id in tracks) {\n if (tracks[id].mode === 'showing' || tracks[id].mode === 'hidden') {\n return tracks[id];\n }\n }\n\n return null;\n };\n }\n};\n\nvar getActiveGroup = function getActiveGroup(type, _ref) {\n var mediaTypes = _ref.mediaTypes;\n return function () {\n var activeTrack_ = mediaTypes[type].activeTrack();\n\n if (!activeTrack_) {\n return null;\n }\n\n return mediaTypes[type].activeGroup(activeTrack_);\n };\n};\n/**\n * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,\n * Closed-Captions) specified in the master manifest.\n *\n * @param {Object} settings\n * Object containing required information for setting up the media groups\n * @param {Tech} settings.tech\n * The tech of the player\n * @param {Object} settings.requestOptions\n * XHR request options used by the segment loaders\n * @param {PlaylistLoader} settings.masterPlaylistLoader\n * PlaylistLoader for the master source\n * @param {VhsHandler} settings.vhs\n * VHS SourceHandler\n * @param {Object} settings.master\n * The parsed master manifest\n * @param {Object} settings.mediaTypes\n * Object to store the loaders, tracks, and utility methods for each media type\n * @param {Function} settings.blacklistCurrentPlaylist\n * Blacklists the current rendition and forces a rendition switch.\n * @function setupMediaGroups\n */\n\n\nvar setupMediaGroups = function setupMediaGroups(settings) {\n ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(function (type) {\n initialize[type](type, settings);\n });\n var mediaTypes = settings.mediaTypes,\n masterPlaylistLoader = settings.masterPlaylistLoader,\n tech = settings.tech,\n vhs = settings.vhs,\n _settings$segmentLoad3 = settings.segmentLoaders,\n audioSegmentLoader = _settings$segmentLoad3['AUDIO'],\n mainSegmentLoader = _settings$segmentLoad3.main; // setup active group and track getters and change event handlers\n\n ['AUDIO', 'SUBTITLES'].forEach(function (type) {\n mediaTypes[type].activeGroup = activeGroup(type, settings);\n mediaTypes[type].activeTrack = activeTrack[type](type, settings);\n mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);\n mediaTypes[type].onGroupChanging = onGroupChanging(type, settings);\n mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);\n mediaTypes[type].getActiveGroup = getActiveGroup(type, settings);\n }); // DO NOT enable the default subtitle or caption track.\n // DO enable the default audio track\n\n var audioGroup = mediaTypes.AUDIO.activeGroup();\n\n if (audioGroup) {\n var groupId = (audioGroup.filter(function (group) {\n return group[\"default\"];\n })[0] || audioGroup[0]).id;\n mediaTypes.AUDIO.tracks[groupId].enabled = true;\n mediaTypes.AUDIO.onGroupChanged();\n mediaTypes.AUDIO.onTrackChanged();\n var activeAudioGroup = mediaTypes.AUDIO.getActiveGroup(); // a similar check for handling setAudio on each loader is run again each time the\n // track is changed, but needs to be handled here since the track may not be considered\n // changed on the first call to onTrackChanged\n\n if (!activeAudioGroup.playlistLoader) {\n // either audio is muxed with video or the stream is audio only\n mainSegmentLoader.setAudio(true);\n } else {\n // audio is demuxed\n mainSegmentLoader.setAudio(false);\n audioSegmentLoader.setAudio(true);\n }\n }\n\n masterPlaylistLoader.on('mediachange', function () {\n ['AUDIO', 'SUBTITLES'].forEach(function (type) {\n return mediaTypes[type].onGroupChanged();\n });\n });\n masterPlaylistLoader.on('mediachanging', function () {\n ['AUDIO', 'SUBTITLES'].forEach(function (type) {\n return mediaTypes[type].onGroupChanging();\n });\n }); // custom audio track change event handler for usage event\n\n var onAudioTrackChanged = function onAudioTrackChanged() {\n mediaTypes.AUDIO.onTrackChanged();\n tech.trigger({\n type: 'usage',\n name: 'vhs-audio-change'\n });\n tech.trigger({\n type: 'usage',\n name: 'hls-audio-change'\n });\n };\n\n tech.audioTracks().addEventListener('change', onAudioTrackChanged);\n tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n vhs.on('dispose', function () {\n tech.audioTracks().removeEventListener('change', onAudioTrackChanged);\n tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n }); // clear existing audio tracks and add the ones we just created\n\n tech.clearTracks('audio');\n\n for (var id in mediaTypes.AUDIO.tracks) {\n tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);\n }\n};\n/**\n * Creates skeleton object used to store the loaders, tracks, and utility methods for each\n * media type\n *\n * @return {Object}\n * Object to store the loaders, tracks, and utility methods for each media type\n * @function createMediaTypes\n */\n\n\nvar createMediaTypes = function createMediaTypes() {\n var mediaTypes = {};\n ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(function (type) {\n mediaTypes[type] = {\n groups: {},\n tracks: {},\n activePlaylistLoader: null,\n activeGroup: noop,\n activeTrack: noop,\n getActiveGroup: noop,\n onGroupChanged: noop,\n onTrackChanged: noop,\n lastTrack_: null,\n logger_: logger(\"MediaGroups[\" + type + \"]\")\n };\n });\n return mediaTypes;\n};\n\nvar ABORT_EARLY_BLACKLIST_SECONDS = 60 * 2;\nvar Vhs$1; // SegmentLoader stats that need to have each loader's\n// values summed to calculate the final value\n\nvar loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred', 'mediaAppends'];\n\nvar sumLoaderStat = function sumLoaderStat(stat) {\n return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];\n};\n\nvar shouldSwitchToMedia = function shouldSwitchToMedia(_ref) {\n var currentPlaylist = _ref.currentPlaylist,\n buffered = _ref.buffered,\n currentTime = _ref.currentTime,\n nextPlaylist = _ref.nextPlaylist,\n bufferLowWaterLine = _ref.bufferLowWaterLine,\n bufferHighWaterLine = _ref.bufferHighWaterLine,\n duration = _ref.duration,\n experimentalBufferBasedABR = _ref.experimentalBufferBasedABR,\n log = _ref.log; // we have no other playlist to switch to\n\n if (!nextPlaylist) {\n videojs.log.warn('We received no playlist to switch to. Please check your stream.');\n return false;\n }\n\n var sharedLogLine = \"allowing switch \" + (currentPlaylist && currentPlaylist.id || 'null') + \" -> \" + nextPlaylist.id;\n\n if (!currentPlaylist) {\n log(sharedLogLine + \" as current playlist is not set\");\n return true;\n } // no need to switch if playlist is the same\n\n\n if (nextPlaylist.id === currentPlaylist.id) {\n return false;\n } // determine if current time is in a buffered range.\n\n\n var isBuffered = Boolean(findRange(buffered, currentTime).length); // If the playlist is live, then we want to not take low water line into account.\n // This is because in LIVE, the player plays 3 segments from the end of the\n // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble\n // in those segments, a viewer will never experience a rendition upswitch.\n\n if (!currentPlaylist.endList) {\n // For LLHLS live streams, don't switch renditions before playback has started, as it almost\n // doubles the time to first playback.\n if (!isBuffered && typeof currentPlaylist.partTargetDuration === 'number') {\n log(\"not \" + sharedLogLine + \" as current playlist is live llhls, but currentTime isn't in buffered.\");\n return false;\n }\n\n log(sharedLogLine + \" as current playlist is live\");\n return true;\n }\n\n var forwardBuffer = timeAheadOf(buffered, currentTime);\n var maxBufferLowWaterLine = experimentalBufferBasedABR ? Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE : Config.MAX_BUFFER_LOW_WATER_LINE; // For the same reason as LIVE, we ignore the low water line when the VOD\n // duration is below the max potential low water line\n\n if (duration < maxBufferLowWaterLine) {\n log(sharedLogLine + \" as duration < max low water line (\" + duration + \" < \" + maxBufferLowWaterLine + \")\");\n return true;\n }\n\n var nextBandwidth = nextPlaylist.attributes.BANDWIDTH;\n var currBandwidth = currentPlaylist.attributes.BANDWIDTH; // when switching down, if our buffer is lower than the high water line,\n // we can switch down\n\n if (nextBandwidth < currBandwidth && (!experimentalBufferBasedABR || forwardBuffer < bufferHighWaterLine)) {\n var logLine = sharedLogLine + \" as next bandwidth < current bandwidth (\" + nextBandwidth + \" < \" + currBandwidth + \")\";\n\n if (experimentalBufferBasedABR) {\n logLine += \" and forwardBuffer < bufferHighWaterLine (\" + forwardBuffer + \" < \" + bufferHighWaterLine + \")\";\n }\n\n log(logLine);\n return true;\n } // and if our buffer is higher than the low water line,\n // we can switch up\n\n\n if ((!experimentalBufferBasedABR || nextBandwidth > currBandwidth) && forwardBuffer >= bufferLowWaterLine) {\n var _logLine = sharedLogLine + \" as forwardBuffer >= bufferLowWaterLine (\" + forwardBuffer + \" >= \" + bufferLowWaterLine + \")\";\n\n if (experimentalBufferBasedABR) {\n _logLine += \" and next bandwidth > current bandwidth (\" + nextBandwidth + \" > \" + currBandwidth + \")\";\n }\n\n log(_logLine);\n return true;\n }\n\n log(\"not \" + sharedLogLine + \" as no switching criteria met\");\n return false;\n};\n/**\n * the master playlist controller controller all interactons\n * between playlists and segmentloaders. At this time this mainly\n * involves a master playlist and a series of audio playlists\n * if they are available\n *\n * @class MasterPlaylistController\n * @extends videojs.EventTarget\n */\n\n\nvar MasterPlaylistController = /*#__PURE__*/function (_videojs$EventTarget) {\n _inheritsLoose(MasterPlaylistController, _videojs$EventTarget);\n\n function MasterPlaylistController(options) {\n var _this;\n\n _this = _videojs$EventTarget.call(this) || this;\n var src = options.src,\n handleManifestRedirects = options.handleManifestRedirects,\n withCredentials = options.withCredentials,\n tech = options.tech,\n bandwidth = options.bandwidth,\n externVhs = options.externVhs,\n useCueTags = options.useCueTags,\n blacklistDuration = options.blacklistDuration,\n enableLowInitialPlaylist = options.enableLowInitialPlaylist,\n sourceType = options.sourceType,\n cacheEncryptionKeys = options.cacheEncryptionKeys,\n experimentalBufferBasedABR = options.experimentalBufferBasedABR,\n experimentalLeastPixelDiffSelector = options.experimentalLeastPixelDiffSelector,\n captionServices = options.captionServices;\n\n if (!src) {\n throw new Error('A non-empty playlist URL or JSON manifest string is required');\n }\n\n var maxPlaylistRetries = options.maxPlaylistRetries;\n\n if (maxPlaylistRetries === null || typeof maxPlaylistRetries === 'undefined') {\n maxPlaylistRetries = Infinity;\n }\n\n Vhs$1 = externVhs;\n _this.experimentalBufferBasedABR = Boolean(experimentalBufferBasedABR);\n _this.experimentalLeastPixelDiffSelector = Boolean(experimentalLeastPixelDiffSelector);\n _this.withCredentials = withCredentials;\n _this.tech_ = tech;\n _this.vhs_ = tech.vhs;\n _this.sourceType_ = sourceType;\n _this.useCueTags_ = useCueTags;\n _this.blacklistDuration = blacklistDuration;\n _this.maxPlaylistRetries = maxPlaylistRetries;\n _this.enableLowInitialPlaylist = enableLowInitialPlaylist;\n\n if (_this.useCueTags_) {\n _this.cueTagsTrack_ = _this.tech_.addTextTrack('metadata', 'ad-cues');\n _this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';\n }\n\n _this.requestOptions_ = {\n withCredentials: withCredentials,\n handleManifestRedirects: handleManifestRedirects,\n maxPlaylistRetries: maxPlaylistRetries,\n timeout: null\n };\n\n _this.on('error', _this.pauseLoading);\n\n _this.mediaTypes_ = createMediaTypes();\n _this.mediaSource = new window$1.MediaSource();\n _this.handleDurationChange_ = _this.handleDurationChange_.bind(_assertThisInitialized(_this));\n _this.handleSourceOpen_ = _this.handleSourceOpen_.bind(_assertThisInitialized(_this));\n _this.handleSourceEnded_ = _this.handleSourceEnded_.bind(_assertThisInitialized(_this));\n\n _this.mediaSource.addEventListener('durationchange', _this.handleDurationChange_); // load the media source into the player\n\n\n _this.mediaSource.addEventListener('sourceopen', _this.handleSourceOpen_);\n\n _this.mediaSource.addEventListener('sourceended', _this.handleSourceEnded_); // we don't have to handle sourceclose since dispose will handle termination of\n // everything, and the MediaSource should not be detached without a proper disposal\n\n\n _this.seekable_ = videojs.createTimeRanges();\n _this.hasPlayed_ = false;\n _this.syncController_ = new SyncController(options);\n _this.segmentMetadataTrack_ = tech.addRemoteTextTrack({\n kind: 'metadata',\n label: 'segment-metadata'\n }, false).track;\n _this.decrypter_ = new Decrypter();\n _this.sourceUpdater_ = new SourceUpdater(_this.mediaSource);\n _this.inbandTextTracks_ = {};\n _this.timelineChangeController_ = new TimelineChangeController();\n var segmentLoaderSettings = {\n vhs: _this.vhs_,\n parse708captions: options.parse708captions,\n useDtsForTimestampOffset: options.useDtsForTimestampOffset,\n captionServices: captionServices,\n mediaSource: _this.mediaSource,\n currentTime: _this.tech_.currentTime.bind(_this.tech_),\n seekable: function seekable() {\n return _this.seekable();\n },\n seeking: function seeking() {\n return _this.tech_.seeking();\n },\n duration: function duration() {\n return _this.duration();\n },\n hasPlayed: function hasPlayed() {\n return _this.hasPlayed_;\n },\n goalBufferLength: function goalBufferLength() {\n return _this.goalBufferLength();\n },\n bandwidth: bandwidth,\n syncController: _this.syncController_,\n decrypter: _this.decrypter_,\n sourceType: _this.sourceType_,\n inbandTextTracks: _this.inbandTextTracks_,\n cacheEncryptionKeys: cacheEncryptionKeys,\n sourceUpdater: _this.sourceUpdater_,\n timelineChangeController: _this.timelineChangeController_,\n experimentalExactManifestTimings: options.experimentalExactManifestTimings\n }; // The source type check not only determines whether a special DASH playlist loader\n // should be used, but also covers the case where the provided src is a vhs-json\n // manifest object (instead of a URL). In the case of vhs-json, the default\n // PlaylistLoader should be used.\n\n _this.masterPlaylistLoader_ = _this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, _this.vhs_, _this.requestOptions_) : new PlaylistLoader(src, _this.vhs_, _this.requestOptions_);\n\n _this.setupMasterPlaylistLoaderListeners_(); // setup segment loaders\n // combined audio/video or just video when alternate audio track is selected\n\n\n _this.mainSegmentLoader_ = new SegmentLoader(videojs.mergeOptions(segmentLoaderSettings, {\n segmentMetadataTrack: _this.segmentMetadataTrack_,\n loaderType: 'main'\n }), options); // alternate audio track\n\n _this.audioSegmentLoader_ = new SegmentLoader(videojs.mergeOptions(segmentLoaderSettings, {\n loaderType: 'audio'\n }), options);\n _this.subtitleSegmentLoader_ = new VTTSegmentLoader(videojs.mergeOptions(segmentLoaderSettings, {\n loaderType: 'vtt',\n featuresNativeTextTracks: _this.tech_.featuresNativeTextTracks,\n loadVttJs: function loadVttJs() {\n return new Promise(function (resolve, reject) {\n function onLoad() {\n tech.off('vttjserror', onError);\n resolve();\n }\n\n function onError() {\n tech.off('vttjsloaded', onLoad);\n reject();\n }\n\n tech.one('vttjsloaded', onLoad);\n tech.one('vttjserror', onError); // safe to call multiple times, script will be loaded only once:\n\n tech.addWebVttScript_();\n });\n }\n }), options);\n\n _this.setupSegmentLoaderListeners_();\n\n if (_this.experimentalBufferBasedABR) {\n _this.masterPlaylistLoader_.one('loadedplaylist', function () {\n return _this.startABRTimer_();\n });\n\n _this.tech_.on('pause', function () {\n return _this.stopABRTimer_();\n });\n\n _this.tech_.on('play', function () {\n return _this.startABRTimer_();\n });\n } // Create SegmentLoader stat-getters\n // mediaRequests_\n // mediaRequestsAborted_\n // mediaRequestsTimedout_\n // mediaRequestsErrored_\n // mediaTransferDuration_\n // mediaBytesTransferred_\n // mediaAppends_\n\n\n loaderStats.forEach(function (stat) {\n _this[stat + '_'] = sumLoaderStat.bind(_assertThisInitialized(_this), stat);\n });\n _this.logger_ = logger('MPC');\n _this.triggeredFmp4Usage = false;\n\n if (_this.tech_.preload() === 'none') {\n _this.loadOnPlay_ = function () {\n _this.loadOnPlay_ = null;\n\n _this.masterPlaylistLoader_.load();\n };\n\n _this.tech_.one('play', _this.loadOnPlay_);\n } else {\n _this.masterPlaylistLoader_.load();\n }\n\n _this.timeToLoadedData__ = -1;\n _this.mainAppendsToLoadedData__ = -1;\n _this.audioAppendsToLoadedData__ = -1;\n var event = _this.tech_.preload() === 'none' ? 'play' : 'loadstart'; // start the first frame timer on loadstart or play (for preload none)\n\n _this.tech_.one(event, function () {\n var timeToLoadedDataStart = Date.now();\n\n _this.tech_.one('loadeddata', function () {\n _this.timeToLoadedData__ = Date.now() - timeToLoadedDataStart;\n _this.mainAppendsToLoadedData__ = _this.mainSegmentLoader_.mediaAppends;\n _this.audioAppendsToLoadedData__ = _this.audioSegmentLoader_.mediaAppends;\n });\n });\n\n return _this;\n }\n\n var _proto = MasterPlaylistController.prototype;\n\n _proto.mainAppendsToLoadedData_ = function mainAppendsToLoadedData_() {\n return this.mainAppendsToLoadedData__;\n };\n\n _proto.audioAppendsToLoadedData_ = function audioAppendsToLoadedData_() {\n return this.audioAppendsToLoadedData__;\n };\n\n _proto.appendsToLoadedData_ = function appendsToLoadedData_() {\n var main = this.mainAppendsToLoadedData_();\n var audio = this.audioAppendsToLoadedData_();\n\n if (main === -1 || audio === -1) {\n return -1;\n }\n\n return main + audio;\n };\n\n _proto.timeToLoadedData_ = function timeToLoadedData_() {\n return this.timeToLoadedData__;\n }\n /**\n * Run selectPlaylist and switch to the new playlist if we should\n *\n * @param {string} [reason=abr] a reason for why the ABR check is made\n * @private\n */\n ;\n\n _proto.checkABR_ = function checkABR_(reason) {\n if (reason === void 0) {\n reason = 'abr';\n }\n\n var nextPlaylist = this.selectPlaylist();\n\n if (nextPlaylist && this.shouldSwitchToMedia_(nextPlaylist)) {\n this.switchMedia_(nextPlaylist, reason);\n }\n };\n\n _proto.switchMedia_ = function switchMedia_(playlist, cause, delay) {\n var oldMedia = this.media();\n var oldId = oldMedia && (oldMedia.id || oldMedia.uri);\n var newId = playlist.id || playlist.uri;\n\n if (oldId && oldId !== newId) {\n this.logger_(\"switch media \" + oldId + \" -> \" + newId + \" from \" + cause);\n this.tech_.trigger({\n type: 'usage',\n name: \"vhs-rendition-change-\" + cause\n });\n }\n\n this.masterPlaylistLoader_.media(playlist, delay);\n }\n /**\n * Start a timer that periodically calls checkABR_\n *\n * @private\n */\n ;\n\n _proto.startABRTimer_ = function startABRTimer_() {\n var _this2 = this;\n\n this.stopABRTimer_();\n this.abrTimer_ = window$1.setInterval(function () {\n return _this2.checkABR_();\n }, 250);\n }\n /**\n * Stop the timer that periodically calls checkABR_\n *\n * @private\n */\n ;\n\n _proto.stopABRTimer_ = function stopABRTimer_() {\n // if we're scrubbing, we don't need to pause.\n // This getter will be added to Video.js in version 7.11.\n if (this.tech_.scrubbing && this.tech_.scrubbing()) {\n return;\n }\n\n window$1.clearInterval(this.abrTimer_);\n this.abrTimer_ = null;\n }\n /**\n * Get a list of playlists for the currently selected audio playlist\n *\n * @return {Array} the array of audio playlists\n */\n ;\n\n _proto.getAudioTrackPlaylists_ = function getAudioTrackPlaylists_() {\n var master = this.master();\n var defaultPlaylists = master && master.playlists || []; // if we don't have any audio groups then we can only\n // assume that the audio tracks are contained in masters\n // playlist array, use that or an empty array.\n\n if (!master || !master.mediaGroups || !master.mediaGroups.AUDIO) {\n return defaultPlaylists;\n }\n\n var AUDIO = master.mediaGroups.AUDIO;\n var groupKeys = Object.keys(AUDIO);\n var track; // get the current active track\n\n if (Object.keys(this.mediaTypes_.AUDIO.groups).length) {\n track = this.mediaTypes_.AUDIO.activeTrack(); // or get the default track from master if mediaTypes_ isn't setup yet\n } else {\n // default group is `main` or just the first group.\n var defaultGroup = AUDIO.main || groupKeys.length && AUDIO[groupKeys[0]];\n\n for (var label in defaultGroup) {\n if (defaultGroup[label][\"default\"]) {\n track = {\n label: label\n };\n break;\n }\n }\n } // no active track no playlists.\n\n\n if (!track) {\n return defaultPlaylists;\n }\n\n var playlists = []; // get all of the playlists that are possible for the\n // active track.\n\n for (var group in AUDIO) {\n if (AUDIO[group][track.label]) {\n var properties = AUDIO[group][track.label];\n\n if (properties.playlists && properties.playlists.length) {\n playlists.push.apply(playlists, properties.playlists);\n } else if (properties.uri) {\n playlists.push(properties);\n } else if (master.playlists.length) {\n // if an audio group does not have a uri\n // see if we have main playlists that use it as a group.\n // if we do then add those to the playlists list.\n for (var i = 0; i < master.playlists.length; i++) {\n var playlist = master.playlists[i];\n\n if (playlist.attributes && playlist.attributes.AUDIO && playlist.attributes.AUDIO === group) {\n playlists.push(playlist);\n }\n }\n }\n }\n }\n\n if (!playlists.length) {\n return defaultPlaylists;\n }\n\n return playlists;\n }\n /**\n * Register event handlers on the master playlist loader. A helper\n * function for construction time.\n *\n * @private\n */\n ;\n\n _proto.setupMasterPlaylistLoaderListeners_ = function setupMasterPlaylistLoaderListeners_() {\n var _this3 = this;\n\n this.masterPlaylistLoader_.on('loadedmetadata', function () {\n var media = _this3.masterPlaylistLoader_.media();\n\n var requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n // timeout the request.\n\n if (isLowestEnabledRendition(_this3.masterPlaylistLoader_.master, _this3.masterPlaylistLoader_.media())) {\n _this3.requestOptions_.timeout = 0;\n } else {\n _this3.requestOptions_.timeout = requestTimeout;\n } // if this isn't a live video and preload permits, start\n // downloading segments\n\n\n if (media.endList && _this3.tech_.preload() !== 'none') {\n _this3.mainSegmentLoader_.playlist(media, _this3.requestOptions_);\n\n _this3.mainSegmentLoader_.load();\n }\n\n setupMediaGroups({\n sourceType: _this3.sourceType_,\n segmentLoaders: {\n AUDIO: _this3.audioSegmentLoader_,\n SUBTITLES: _this3.subtitleSegmentLoader_,\n main: _this3.mainSegmentLoader_\n },\n tech: _this3.tech_,\n requestOptions: _this3.requestOptions_,\n masterPlaylistLoader: _this3.masterPlaylistLoader_,\n vhs: _this3.vhs_,\n master: _this3.master(),\n mediaTypes: _this3.mediaTypes_,\n blacklistCurrentPlaylist: _this3.blacklistCurrentPlaylist.bind(_this3)\n });\n\n _this3.triggerPresenceUsage_(_this3.master(), media);\n\n _this3.setupFirstPlay();\n\n if (!_this3.mediaTypes_.AUDIO.activePlaylistLoader || _this3.mediaTypes_.AUDIO.activePlaylistLoader.media()) {\n _this3.trigger('selectedinitialmedia');\n } else {\n // We must wait for the active audio playlist loader to\n // finish setting up before triggering this event so the\n // representations API and EME setup is correct\n _this3.mediaTypes_.AUDIO.activePlaylistLoader.one('loadedmetadata', function () {\n _this3.trigger('selectedinitialmedia');\n });\n }\n });\n this.masterPlaylistLoader_.on('loadedplaylist', function () {\n if (_this3.loadOnPlay_) {\n _this3.tech_.off('play', _this3.loadOnPlay_);\n }\n\n var updatedPlaylist = _this3.masterPlaylistLoader_.media();\n\n if (!updatedPlaylist) {\n // exclude any variants that are not supported by the browser before selecting\n // an initial media as the playlist selectors do not consider browser support\n _this3.excludeUnsupportedVariants_();\n\n var selectedMedia;\n\n if (_this3.enableLowInitialPlaylist) {\n selectedMedia = _this3.selectInitialPlaylist();\n }\n\n if (!selectedMedia) {\n selectedMedia = _this3.selectPlaylist();\n }\n\n if (!selectedMedia || !_this3.shouldSwitchToMedia_(selectedMedia)) {\n return;\n }\n\n _this3.initialMedia_ = selectedMedia;\n\n _this3.switchMedia_(_this3.initialMedia_, 'initial'); // Under the standard case where a source URL is provided, loadedplaylist will\n // fire again since the playlist will be requested. In the case of vhs-json\n // (where the manifest object is provided as the source), when the media\n // playlist's `segments` list is already available, a media playlist won't be\n // requested, and loadedplaylist won't fire again, so the playlist handler must be\n // called on its own here.\n\n\n var haveJsonSource = _this3.sourceType_ === 'vhs-json' && _this3.initialMedia_.segments;\n\n if (!haveJsonSource) {\n return;\n }\n\n updatedPlaylist = _this3.initialMedia_;\n }\n\n _this3.handleUpdatedMediaPlaylist(updatedPlaylist);\n });\n this.masterPlaylistLoader_.on('error', function () {\n _this3.blacklistCurrentPlaylist(_this3.masterPlaylistLoader_.error);\n });\n this.masterPlaylistLoader_.on('mediachanging', function () {\n _this3.mainSegmentLoader_.abort();\n\n _this3.mainSegmentLoader_.pause();\n });\n this.masterPlaylistLoader_.on('mediachange', function () {\n var media = _this3.masterPlaylistLoader_.media();\n\n var requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n // timeout the request.\n\n if (isLowestEnabledRendition(_this3.masterPlaylistLoader_.master, _this3.masterPlaylistLoader_.media())) {\n _this3.requestOptions_.timeout = 0;\n } else {\n _this3.requestOptions_.timeout = requestTimeout;\n }\n\n _this3.masterPlaylistLoader_.load(); // TODO: Create a new event on the PlaylistLoader that signals\n // that the segments have changed in some way and use that to\n // update the SegmentLoader instead of doing it twice here and\n // on `loadedplaylist`\n\n\n _this3.mainSegmentLoader_.playlist(media, _this3.requestOptions_);\n\n _this3.mainSegmentLoader_.load();\n\n _this3.tech_.trigger({\n type: 'mediachange',\n bubbles: true\n });\n });\n this.masterPlaylistLoader_.on('playlistunchanged', function () {\n var updatedPlaylist = _this3.masterPlaylistLoader_.media(); // ignore unchanged playlists that have already been\n // excluded for not-changing. We likely just have a really slowly updating\n // playlist.\n\n\n if (updatedPlaylist.lastExcludeReason_ === 'playlist-unchanged') {\n return;\n }\n\n var playlistOutdated = _this3.stuckAtPlaylistEnd_(updatedPlaylist);\n\n if (playlistOutdated) {\n // Playlist has stopped updating and we're stuck at its end. Try to\n // blacklist it and switch to another playlist in the hope that that\n // one is updating (and give the player a chance to re-adjust to the\n // safe live point).\n _this3.blacklistCurrentPlaylist({\n message: 'Playlist no longer updating.',\n reason: 'playlist-unchanged'\n }); // useful for monitoring QoS\n\n\n _this3.tech_.trigger('playliststuck');\n }\n });\n this.masterPlaylistLoader_.on('renditiondisabled', function () {\n _this3.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-disabled'\n });\n\n _this3.tech_.trigger({\n type: 'usage',\n name: 'hls-rendition-disabled'\n });\n });\n this.masterPlaylistLoader_.on('renditionenabled', function () {\n _this3.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-enabled'\n });\n\n _this3.tech_.trigger({\n type: 'usage',\n name: 'hls-rendition-enabled'\n });\n });\n }\n /**\n * Given an updated media playlist (whether it was loaded for the first time, or\n * refreshed for live playlists), update any relevant properties and state to reflect\n * changes in the media that should be accounted for (e.g., cues and duration).\n *\n * @param {Object} updatedPlaylist the updated media playlist object\n *\n * @private\n */\n ;\n\n _proto.handleUpdatedMediaPlaylist = function handleUpdatedMediaPlaylist(updatedPlaylist) {\n if (this.useCueTags_) {\n this.updateAdCues_(updatedPlaylist);\n } // TODO: Create a new event on the PlaylistLoader that signals\n // that the segments have changed in some way and use that to\n // update the SegmentLoader instead of doing it twice here and\n // on `mediachange`\n\n\n this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);\n this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,\n // as it is possible that it was temporarily stopped while waiting for\n // a playlist (e.g., in case the playlist errored and we re-requested it).\n\n if (!this.tech_.paused()) {\n this.mainSegmentLoader_.load();\n\n if (this.audioSegmentLoader_) {\n this.audioSegmentLoader_.load();\n }\n }\n }\n /**\n * A helper function for triggerring presence usage events once per source\n *\n * @private\n */\n ;\n\n _proto.triggerPresenceUsage_ = function triggerPresenceUsage_(master, media) {\n var mediaGroups = master.mediaGroups || {};\n var defaultDemuxed = true;\n var audioGroupKeys = Object.keys(mediaGroups.AUDIO);\n\n for (var mediaGroup in mediaGroups.AUDIO) {\n for (var label in mediaGroups.AUDIO[mediaGroup]) {\n var properties = mediaGroups.AUDIO[mediaGroup][label];\n\n if (!properties.uri) {\n defaultDemuxed = false;\n }\n }\n }\n\n if (defaultDemuxed) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-demuxed'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-demuxed'\n });\n }\n\n if (Object.keys(mediaGroups.SUBTITLES).length) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-webvtt'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-webvtt'\n });\n }\n\n if (Vhs$1.Playlist.isAes(media)) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-aes'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-aes'\n });\n }\n\n if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-alternate-audio'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-alternate-audio'\n });\n }\n\n if (this.useCueTags_) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-playlist-cue-tags'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-playlist-cue-tags'\n });\n }\n };\n\n _proto.shouldSwitchToMedia_ = function shouldSwitchToMedia_(nextPlaylist) {\n var currentPlaylist = this.masterPlaylistLoader_.media() || this.masterPlaylistLoader_.pendingMedia_;\n var currentTime = this.tech_.currentTime();\n var bufferLowWaterLine = this.bufferLowWaterLine();\n var bufferHighWaterLine = this.bufferHighWaterLine();\n var buffered = this.tech_.buffered();\n return shouldSwitchToMedia({\n buffered: buffered,\n currentTime: currentTime,\n currentPlaylist: currentPlaylist,\n nextPlaylist: nextPlaylist,\n bufferLowWaterLine: bufferLowWaterLine,\n bufferHighWaterLine: bufferHighWaterLine,\n duration: this.duration(),\n experimentalBufferBasedABR: this.experimentalBufferBasedABR,\n log: this.logger_\n });\n }\n /**\n * Register event handlers on the segment loaders. A helper function\n * for construction time.\n *\n * @private\n */\n ;\n\n _proto.setupSegmentLoaderListeners_ = function setupSegmentLoaderListeners_() {\n var _this4 = this;\n\n this.mainSegmentLoader_.on('bandwidthupdate', function () {\n // Whether or not buffer based ABR or another ABR is used, on a bandwidth change it's\n // useful to check to see if a rendition switch should be made.\n _this4.checkABR_('bandwidthupdate');\n\n _this4.tech_.trigger('bandwidthupdate');\n });\n this.mainSegmentLoader_.on('timeout', function () {\n if (_this4.experimentalBufferBasedABR) {\n // If a rendition change is needed, then it would've be done on `bandwidthupdate`.\n // Here the only consideration is that for buffer based ABR there's no guarantee\n // of an immediate switch (since the bandwidth is averaged with a timeout\n // bandwidth value of 1), so force a load on the segment loader to keep it going.\n _this4.mainSegmentLoader_.load();\n }\n }); // `progress` events are not reliable enough of a bandwidth measure to trigger buffer\n // based ABR.\n\n if (!this.experimentalBufferBasedABR) {\n this.mainSegmentLoader_.on('progress', function () {\n _this4.trigger('progress');\n });\n }\n\n this.mainSegmentLoader_.on('error', function () {\n _this4.blacklistCurrentPlaylist(_this4.mainSegmentLoader_.error());\n });\n this.mainSegmentLoader_.on('appenderror', function () {\n _this4.error = _this4.mainSegmentLoader_.error_;\n\n _this4.trigger('error');\n });\n this.mainSegmentLoader_.on('syncinfoupdate', function () {\n _this4.onSyncInfoUpdate_();\n });\n this.mainSegmentLoader_.on('timestampoffset', function () {\n _this4.tech_.trigger({\n type: 'usage',\n name: 'vhs-timestamp-offset'\n });\n\n _this4.tech_.trigger({\n type: 'usage',\n name: 'hls-timestamp-offset'\n });\n });\n this.audioSegmentLoader_.on('syncinfoupdate', function () {\n _this4.onSyncInfoUpdate_();\n });\n this.audioSegmentLoader_.on('appenderror', function () {\n _this4.error = _this4.audioSegmentLoader_.error_;\n\n _this4.trigger('error');\n });\n this.mainSegmentLoader_.on('ended', function () {\n _this4.logger_('main segment loader ended');\n\n _this4.onEndOfStream();\n });\n this.mainSegmentLoader_.on('earlyabort', function (event) {\n // never try to early abort with the new ABR algorithm\n if (_this4.experimentalBufferBasedABR) {\n return;\n }\n\n _this4.delegateLoaders_('all', ['abort']);\n\n _this4.blacklistCurrentPlaylist({\n message: 'Aborted early because there isn\\'t enough bandwidth to complete the ' + 'request without rebuffering.'\n }, ABORT_EARLY_BLACKLIST_SECONDS);\n });\n\n var updateCodecs = function updateCodecs() {\n if (!_this4.sourceUpdater_.hasCreatedSourceBuffers()) {\n return _this4.tryToCreateSourceBuffers_();\n }\n\n var codecs = _this4.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n\n if (!codecs) {\n return;\n }\n\n _this4.sourceUpdater_.addOrChangeSourceBuffers(codecs);\n };\n\n this.mainSegmentLoader_.on('trackinfo', updateCodecs);\n this.audioSegmentLoader_.on('trackinfo', updateCodecs);\n this.mainSegmentLoader_.on('fmp4', function () {\n if (!_this4.triggeredFmp4Usage) {\n _this4.tech_.trigger({\n type: 'usage',\n name: 'vhs-fmp4'\n });\n\n _this4.tech_.trigger({\n type: 'usage',\n name: 'hls-fmp4'\n });\n\n _this4.triggeredFmp4Usage = true;\n }\n });\n this.audioSegmentLoader_.on('fmp4', function () {\n if (!_this4.triggeredFmp4Usage) {\n _this4.tech_.trigger({\n type: 'usage',\n name: 'vhs-fmp4'\n });\n\n _this4.tech_.trigger({\n type: 'usage',\n name: 'hls-fmp4'\n });\n\n _this4.triggeredFmp4Usage = true;\n }\n });\n this.audioSegmentLoader_.on('ended', function () {\n _this4.logger_('audioSegmentLoader ended');\n\n _this4.onEndOfStream();\n });\n };\n\n _proto.mediaSecondsLoaded_ = function mediaSecondsLoaded_() {\n return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);\n }\n /**\n * Call load on our SegmentLoaders\n */\n ;\n\n _proto.load = function load() {\n this.mainSegmentLoader_.load();\n\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n this.audioSegmentLoader_.load();\n }\n\n if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n this.subtitleSegmentLoader_.load();\n }\n }\n /**\n * Re-tune playback quality level for the current player\n * conditions without performing destructive actions, like\n * removing already buffered content\n *\n * @private\n * @deprecated\n */\n ;\n\n _proto.smoothQualityChange_ = function smoothQualityChange_(media) {\n if (media === void 0) {\n media = this.selectPlaylist();\n }\n\n this.fastQualityChange_(media);\n }\n /**\n * Re-tune playback quality level for the current player\n * conditions. This method will perform destructive actions like removing\n * already buffered content in order to readjust the currently active\n * playlist quickly. This is good for manual quality changes\n *\n * @private\n */\n ;\n\n _proto.fastQualityChange_ = function fastQualityChange_(media) {\n var _this5 = this;\n\n if (media === void 0) {\n media = this.selectPlaylist();\n }\n\n if (media === this.masterPlaylistLoader_.media()) {\n this.logger_('skipping fastQualityChange because new media is same as old');\n return;\n }\n\n this.switchMedia_(media, 'fast-quality'); // Delete all buffered data to allow an immediate quality switch, then seek to give\n // the browser a kick to remove any cached frames from the previous rendtion (.04 seconds\n // ahead is roughly the minimum that will accomplish this across a variety of content\n // in IE and Edge, but seeking in place is sufficient on all other browsers)\n // Edge/IE bug: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14600375/\n // Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=651904\n\n this.mainSegmentLoader_.resetEverything(function () {\n // Since this is not a typical seek, we avoid the seekTo method which can cause segments\n // from the previously enabled rendition to load before the new playlist has finished loading\n if (videojs.browser.IE_VERSION || videojs.browser.IS_EDGE) {\n _this5.tech_.setCurrentTime(_this5.tech_.currentTime() + 0.04);\n } else {\n _this5.tech_.setCurrentTime(_this5.tech_.currentTime());\n }\n }); // don't need to reset audio as it is reset when media changes\n }\n /**\n * Begin playback.\n */\n ;\n\n _proto.play = function play() {\n if (this.setupFirstPlay()) {\n return;\n }\n\n if (this.tech_.ended()) {\n this.tech_.setCurrentTime(0);\n }\n\n if (this.hasPlayed_) {\n this.load();\n }\n\n var seekable = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,\n // seek forward to the live point\n\n if (this.tech_.duration() === Infinity) {\n if (this.tech_.currentTime() < seekable.start(0)) {\n return this.tech_.setCurrentTime(seekable.end(seekable.length - 1));\n }\n }\n }\n /**\n * Seek to the latest media position if this is a live video and the\n * player and video are loaded and initialized.\n */\n ;\n\n _proto.setupFirstPlay = function setupFirstPlay() {\n var _this6 = this;\n\n var media = this.masterPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play\n // If 1) there is no active media\n // 2) the player is paused\n // 3) the first play has already been setup\n // then exit early\n\n if (!media || this.tech_.paused() || this.hasPlayed_) {\n return false;\n } // when the video is a live stream\n\n\n if (!media.endList) {\n var seekable = this.seekable();\n\n if (!seekable.length) {\n // without a seekable range, the player cannot seek to begin buffering at the live\n // point\n return false;\n }\n\n if (videojs.browser.IE_VERSION && this.tech_.readyState() === 0) {\n // IE11 throws an InvalidStateError if you try to set currentTime while the\n // readyState is 0, so it must be delayed until the tech fires loadedmetadata.\n this.tech_.one('loadedmetadata', function () {\n _this6.trigger('firstplay');\n\n _this6.tech_.setCurrentTime(seekable.end(0));\n\n _this6.hasPlayed_ = true;\n });\n return false;\n } // trigger firstplay to inform the source handler to ignore the next seek event\n\n\n this.trigger('firstplay'); // seek to the live point\n\n this.tech_.setCurrentTime(seekable.end(0));\n }\n\n this.hasPlayed_ = true; // we can begin loading now that everything is ready\n\n this.load();\n return true;\n }\n /**\n * handle the sourceopen event on the MediaSource\n *\n * @private\n */\n ;\n\n _proto.handleSourceOpen_ = function handleSourceOpen_() {\n // Only attempt to create the source buffer if none already exist.\n // handleSourceOpen is also called when we are \"re-opening\" a source buffer\n // after `endOfStream` has been called (in response to a seek for instance)\n this.tryToCreateSourceBuffers_(); // if autoplay is enabled, begin playback. This is duplicative of\n // code in video.js but is required because play() must be invoked\n // *after* the media source has opened.\n\n if (this.tech_.autoplay()) {\n var playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request\n // on browsers which return a promise\n\n if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {\n playPromise.then(null, function (e) {});\n }\n }\n\n this.trigger('sourceopen');\n }\n /**\n * handle the sourceended event on the MediaSource\n *\n * @private\n */\n ;\n\n _proto.handleSourceEnded_ = function handleSourceEnded_() {\n if (!this.inbandTextTracks_.metadataTrack_) {\n return;\n }\n\n var cues = this.inbandTextTracks_.metadataTrack_.cues;\n\n if (!cues || !cues.length) {\n return;\n }\n\n var duration = this.duration();\n cues[cues.length - 1].endTime = isNaN(duration) || Math.abs(duration) === Infinity ? Number.MAX_VALUE : duration;\n }\n /**\n * handle the durationchange event on the MediaSource\n *\n * @private\n */\n ;\n\n _proto.handleDurationChange_ = function handleDurationChange_() {\n this.tech_.trigger('durationchange');\n }\n /**\n * Calls endOfStream on the media source when all active stream types have called\n * endOfStream\n *\n * @param {string} streamType\n * Stream type of the segment loader that called endOfStream\n * @private\n */\n ;\n\n _proto.onEndOfStream = function onEndOfStream() {\n var isEndOfStream = this.mainSegmentLoader_.ended_;\n\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n var mainMediaInfo = this.mainSegmentLoader_.getCurrentMediaInfo_(); // if the audio playlist loader exists, then alternate audio is active\n\n if (!mainMediaInfo || mainMediaInfo.hasVideo) {\n // if we do not know if the main segment loader contains video yet or if we\n // definitively know the main segment loader contains video, then we need to wait\n // for both main and audio segment loaders to call endOfStream\n isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;\n } else {\n // otherwise just rely on the audio loader\n isEndOfStream = this.audioSegmentLoader_.ended_;\n }\n }\n\n if (!isEndOfStream) {\n return;\n }\n\n this.stopABRTimer_();\n this.sourceUpdater_.endOfStream();\n }\n /**\n * Check if a playlist has stopped being updated\n *\n * @param {Object} playlist the media playlist object\n * @return {boolean} whether the playlist has stopped being updated or not\n */\n ;\n\n _proto.stuckAtPlaylistEnd_ = function stuckAtPlaylistEnd_(playlist) {\n var seekable = this.seekable();\n\n if (!seekable.length) {\n // playlist doesn't have enough information to determine whether we are stuck\n return false;\n }\n\n var expired = this.syncController_.getExpiredTime(playlist, this.duration());\n\n if (expired === null) {\n return false;\n } // does not use the safe live end to calculate playlist end, since we\n // don't want to say we are stuck while there is still content\n\n\n var absolutePlaylistEnd = Vhs$1.Playlist.playlistEnd(playlist, expired);\n var currentTime = this.tech_.currentTime();\n var buffered = this.tech_.buffered();\n\n if (!buffered.length) {\n // return true if the playhead reached the absolute end of the playlist\n return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;\n }\n\n var bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute\n // end of playlist\n\n return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;\n }\n /**\n * Blacklists a playlist when an error occurs for a set amount of time\n * making it unavailable for selection by the rendition selection algorithm\n * and then forces a new playlist (rendition) selection.\n *\n * @param {Object=} error an optional error that may include the playlist\n * to blacklist\n * @param {number=} blacklistDuration an optional number of seconds to blacklist the\n * playlist\n */\n ;\n\n _proto.blacklistCurrentPlaylist = function blacklistCurrentPlaylist(error, blacklistDuration) {\n if (error === void 0) {\n error = {};\n } // If the `error` was generated by the playlist loader, it will contain\n // the playlist we were trying to load (but failed) and that should be\n // blacklisted instead of the currently selected playlist which is likely\n // out-of-date in this scenario\n\n\n var currentPlaylist = error.playlist || this.masterPlaylistLoader_.media();\n blacklistDuration = blacklistDuration || error.blacklistDuration || this.blacklistDuration; // If there is no current playlist, then an error occurred while we were\n // trying to load the master OR while we were disposing of the tech\n\n if (!currentPlaylist) {\n this.error = error;\n\n if (this.mediaSource.readyState !== 'open') {\n this.trigger('error');\n } else {\n this.sourceUpdater_.endOfStream('network');\n }\n\n return;\n }\n\n currentPlaylist.playlistErrors_++;\n var playlists = this.masterPlaylistLoader_.master.playlists;\n var enabledPlaylists = playlists.filter(isEnabled);\n var isFinalRendition = enabledPlaylists.length === 1 && enabledPlaylists[0] === currentPlaylist; // Don't blacklist the only playlist unless it was blacklisted\n // forever\n\n if (playlists.length === 1 && blacklistDuration !== Infinity) {\n videojs.log.warn(\"Problem encountered with playlist \" + currentPlaylist.id + \". \" + 'Trying again since it is the only playlist.');\n this.tech_.trigger('retryplaylist'); // if this is a final rendition, we should delay\n\n return this.masterPlaylistLoader_.load(isFinalRendition);\n }\n\n if (isFinalRendition) {\n // Since we're on the final non-blacklisted playlist, and we're about to blacklist\n // it, instead of erring the player or retrying this playlist, clear out the current\n // blacklist. This allows other playlists to be attempted in case any have been\n // fixed.\n var reincluded = false;\n playlists.forEach(function (playlist) {\n // skip current playlist which is about to be blacklisted\n if (playlist === currentPlaylist) {\n return;\n }\n\n var excludeUntil = playlist.excludeUntil; // a playlist cannot be reincluded if it wasn't excluded to begin with.\n\n if (typeof excludeUntil !== 'undefined' && excludeUntil !== Infinity) {\n reincluded = true;\n delete playlist.excludeUntil;\n }\n });\n\n if (reincluded) {\n videojs.log.warn('Removing other playlists from the exclusion list because the last ' + 'rendition is about to be excluded.'); // Technically we are retrying a playlist, in that we are simply retrying a previous\n // playlist. This is needed for users relying on the retryplaylist event to catch a\n // case where the player might be stuck and looping through \"dead\" playlists.\n\n this.tech_.trigger('retryplaylist');\n }\n } // Blacklist this playlist\n\n\n var excludeUntil;\n\n if (currentPlaylist.playlistErrors_ > this.maxPlaylistRetries) {\n excludeUntil = Infinity;\n } else {\n excludeUntil = Date.now() + blacklistDuration * 1000;\n }\n\n currentPlaylist.excludeUntil = excludeUntil;\n\n if (error.reason) {\n currentPlaylist.lastExcludeReason_ = error.reason;\n }\n\n this.tech_.trigger('blacklistplaylist');\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-blacklisted'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-rendition-blacklisted'\n }); // TODO: should we select a new playlist if this blacklist wasn't for the currentPlaylist?\n // Would be something like media().id !=== currentPlaylist.id and we would need something\n // like `pendingMedia` in playlist loaders to check against that too. This will prevent us\n // from loading a new playlist on any blacklist.\n // Select a new playlist\n\n var nextPlaylist = this.selectPlaylist();\n\n if (!nextPlaylist) {\n this.error = 'Playback cannot continue. No available working or supported playlists.';\n this.trigger('error');\n return;\n }\n\n var logFn = error.internal ? this.logger_ : videojs.log.warn;\n var errorMessage = error.message ? ' ' + error.message : '';\n logFn((error.internal ? 'Internal problem' : 'Problem') + \" encountered with playlist \" + currentPlaylist.id + \".\" + (errorMessage + \" Switching to playlist \" + nextPlaylist.id + \".\")); // if audio group changed reset audio loaders\n\n if (nextPlaylist.attributes.AUDIO !== currentPlaylist.attributes.AUDIO) {\n this.delegateLoaders_('audio', ['abort', 'pause']);\n } // if subtitle group changed reset subtitle loaders\n\n\n if (nextPlaylist.attributes.SUBTITLES !== currentPlaylist.attributes.SUBTITLES) {\n this.delegateLoaders_('subtitle', ['abort', 'pause']);\n }\n\n this.delegateLoaders_('main', ['abort', 'pause']);\n var delayDuration = nextPlaylist.targetDuration / 2 * 1000 || 5 * 1000;\n var shouldDelay = typeof nextPlaylist.lastRequest === 'number' && Date.now() - nextPlaylist.lastRequest <= delayDuration; // delay if it's a final rendition or if the last refresh is sooner than half targetDuration\n\n return this.switchMedia_(nextPlaylist, 'exclude', isFinalRendition || shouldDelay);\n }\n /**\n * Pause all segment/playlist loaders\n */\n ;\n\n _proto.pauseLoading = function pauseLoading() {\n this.delegateLoaders_('all', ['abort', 'pause']);\n this.stopABRTimer_();\n }\n /**\n * Call a set of functions in order on playlist loaders, segment loaders,\n * or both types of loaders.\n *\n * @param {string} filter\n * Filter loaders that should call fnNames using a string. Can be:\n * * all - run on all loaders\n * * audio - run on all audio loaders\n * * subtitle - run on all subtitle loaders\n * * main - run on the main/master loaders\n *\n * @param {Array|string} fnNames\n * A string or array of function names to call.\n */\n ;\n\n _proto.delegateLoaders_ = function delegateLoaders_(filter, fnNames) {\n var _this7 = this;\n\n var loaders = [];\n var dontFilterPlaylist = filter === 'all';\n\n if (dontFilterPlaylist || filter === 'main') {\n loaders.push(this.masterPlaylistLoader_);\n }\n\n var mediaTypes = [];\n\n if (dontFilterPlaylist || filter === 'audio') {\n mediaTypes.push('AUDIO');\n }\n\n if (dontFilterPlaylist || filter === 'subtitle') {\n mediaTypes.push('CLOSED-CAPTIONS');\n mediaTypes.push('SUBTITLES');\n }\n\n mediaTypes.forEach(function (mediaType) {\n var loader = _this7.mediaTypes_[mediaType] && _this7.mediaTypes_[mediaType].activePlaylistLoader;\n\n if (loader) {\n loaders.push(loader);\n }\n });\n ['main', 'audio', 'subtitle'].forEach(function (name) {\n var loader = _this7[name + \"SegmentLoader_\"];\n\n if (loader && (filter === name || filter === 'all')) {\n loaders.push(loader);\n }\n });\n loaders.forEach(function (loader) {\n return fnNames.forEach(function (fnName) {\n if (typeof loader[fnName] === 'function') {\n loader[fnName]();\n }\n });\n });\n }\n /**\n * set the current time on all segment loaders\n *\n * @param {TimeRange} currentTime the current time to set\n * @return {TimeRange} the current time\n */\n ;\n\n _proto.setCurrentTime = function setCurrentTime(currentTime) {\n var buffered = findRange(this.tech_.buffered(), currentTime);\n\n if (!(this.masterPlaylistLoader_ && this.masterPlaylistLoader_.media())) {\n // return immediately if the metadata is not ready yet\n return 0;\n } // it's clearly an edge-case but don't thrown an error if asked to\n // seek within an empty playlist\n\n\n if (!this.masterPlaylistLoader_.media().segments) {\n return 0;\n } // if the seek location is already buffered, continue buffering as usual\n\n\n if (buffered && buffered.length) {\n return currentTime;\n } // cancel outstanding requests so we begin buffering at the new\n // location\n\n\n this.mainSegmentLoader_.resetEverything();\n this.mainSegmentLoader_.abort();\n\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n this.audioSegmentLoader_.resetEverything();\n this.audioSegmentLoader_.abort();\n }\n\n if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n this.subtitleSegmentLoader_.resetEverything();\n this.subtitleSegmentLoader_.abort();\n } // start segment loader loading in case they are paused\n\n\n this.load();\n }\n /**\n * get the current duration\n *\n * @return {TimeRange} the duration\n */\n ;\n\n _proto.duration = function duration() {\n if (!this.masterPlaylistLoader_) {\n return 0;\n }\n\n var media = this.masterPlaylistLoader_.media();\n\n if (!media) {\n // no playlists loaded yet, so can't determine a duration\n return 0;\n } // Don't rely on the media source for duration in the case of a live playlist since\n // setting the native MediaSource's duration to infinity ends up with consequences to\n // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n //\n // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n // however, few browsers have support for setLiveSeekableRange()\n // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n //\n // Until a time when the duration of the media source can be set to infinity, and a\n // seekable range specified across browsers, just return Infinity.\n\n\n if (!media.endList) {\n return Infinity;\n } // Since this is a VOD video, it is safe to rely on the media source's duration (if\n // available). If it's not available, fall back to a playlist-calculated estimate.\n\n\n if (this.mediaSource) {\n return this.mediaSource.duration;\n }\n\n return Vhs$1.Playlist.duration(media);\n }\n /**\n * check the seekable range\n *\n * @return {TimeRange} the seekable range\n */\n ;\n\n _proto.seekable = function seekable() {\n return this.seekable_;\n };\n\n _proto.onSyncInfoUpdate_ = function onSyncInfoUpdate_() {\n var audioSeekable; // TODO check for creation of both source buffers before updating seekable\n //\n // A fix was made to this function where a check for\n // this.sourceUpdater_.hasCreatedSourceBuffers\n // was added to ensure that both source buffers were created before seekable was\n // updated. However, it originally had a bug where it was checking for a true and\n // returning early instead of checking for false. Setting it to check for false to\n // return early though created other issues. A call to play() would check for seekable\n // end without verifying that a seekable range was present. In addition, even checking\n // for that didn't solve some issues, as handleFirstPlay is sometimes worked around\n // due to a media update calling load on the segment loaders, skipping a seek to live,\n // thereby starting live streams at the beginning of the stream rather than at the end.\n //\n // This conditional should be fixed to wait for the creation of two source buffers at\n // the same time as the other sections of code are fixed to properly seek to live and\n // not throw an error due to checking for a seekable end when no seekable range exists.\n //\n // For now, fall back to the older behavior, with the understanding that the seekable\n // range may not be completely correct, leading to a suboptimal initial live point.\n\n if (!this.masterPlaylistLoader_) {\n return;\n }\n\n var media = this.masterPlaylistLoader_.media();\n\n if (!media) {\n return;\n }\n\n var expired = this.syncController_.getExpiredTime(media, this.duration());\n\n if (expired === null) {\n // not enough information to update seekable\n return;\n }\n\n var master = this.masterPlaylistLoader_.master;\n var mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(master, media));\n\n if (mainSeekable.length === 0) {\n return;\n }\n\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();\n expired = this.syncController_.getExpiredTime(media, this.duration());\n\n if (expired === null) {\n return;\n }\n\n audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(master, media));\n\n if (audioSeekable.length === 0) {\n return;\n }\n }\n\n var oldEnd;\n var oldStart;\n\n if (this.seekable_ && this.seekable_.length) {\n oldEnd = this.seekable_.end(0);\n oldStart = this.seekable_.start(0);\n }\n\n if (!audioSeekable) {\n // seekable has been calculated based on buffering video data so it\n // can be returned directly\n this.seekable_ = mainSeekable;\n } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {\n // seekables are pretty far off, rely on main\n this.seekable_ = mainSeekable;\n } else {\n this.seekable_ = videojs.createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);\n } // seekable is the same as last time\n\n\n if (this.seekable_ && this.seekable_.length) {\n if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) {\n return;\n }\n }\n\n this.logger_(\"seekable updated [\" + printableRange(this.seekable_) + \"]\");\n this.tech_.trigger('seekablechanged');\n }\n /**\n * Update the player duration\n */\n ;\n\n _proto.updateDuration = function updateDuration(isLive) {\n if (this.updateDuration_) {\n this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n this.updateDuration_ = null;\n }\n\n if (this.mediaSource.readyState !== 'open') {\n this.updateDuration_ = this.updateDuration.bind(this, isLive);\n this.mediaSource.addEventListener('sourceopen', this.updateDuration_);\n return;\n }\n\n if (isLive) {\n var seekable = this.seekable();\n\n if (!seekable.length) {\n return;\n } // Even in the case of a live playlist, the native MediaSource's duration should not\n // be set to Infinity (even though this would be expected for a live playlist), since\n // setting the native MediaSource's duration to infinity ends up with consequences to\n // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n //\n // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n // however, few browsers have support for setLiveSeekableRange()\n // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n //\n // Until a time when the duration of the media source can be set to infinity, and a\n // seekable range specified across browsers, the duration should be greater than or\n // equal to the last possible seekable value.\n // MediaSource duration starts as NaN\n // It is possible (and probable) that this case will never be reached for many\n // sources, since the MediaSource reports duration as the highest value without\n // accounting for timestamp offset. For example, if the timestamp offset is -100 and\n // we buffered times 0 to 100 with real times of 100 to 200, even though current\n // time will be between 0 and 100, the native media source may report the duration\n // as 200. However, since we report duration separate from the media source (as\n // Infinity), and as long as the native media source duration value is greater than\n // our reported seekable range, seeks will work as expected. The large number as\n // duration for live is actually a strategy used by some players to work around the\n // issue of live seekable ranges cited above.\n\n\n if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) {\n this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1));\n }\n\n return;\n }\n\n var buffered = this.tech_.buffered();\n var duration = Vhs$1.Playlist.duration(this.masterPlaylistLoader_.media());\n\n if (buffered.length > 0) {\n duration = Math.max(duration, buffered.end(buffered.length - 1));\n }\n\n if (this.mediaSource.duration !== duration) {\n this.sourceUpdater_.setDuration(duration);\n }\n }\n /**\n * dispose of the MasterPlaylistController and everything\n * that it controls\n */\n ;\n\n _proto.dispose = function dispose() {\n var _this8 = this;\n\n this.trigger('dispose');\n this.decrypter_.terminate();\n this.masterPlaylistLoader_.dispose();\n this.mainSegmentLoader_.dispose();\n\n if (this.loadOnPlay_) {\n this.tech_.off('play', this.loadOnPlay_);\n }\n\n ['AUDIO', 'SUBTITLES'].forEach(function (type) {\n var groups = _this8.mediaTypes_[type].groups;\n\n for (var id in groups) {\n groups[id].forEach(function (group) {\n if (group.playlistLoader) {\n group.playlistLoader.dispose();\n }\n });\n }\n });\n this.audioSegmentLoader_.dispose();\n this.subtitleSegmentLoader_.dispose();\n this.sourceUpdater_.dispose();\n this.timelineChangeController_.dispose();\n this.stopABRTimer_();\n\n if (this.updateDuration_) {\n this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n }\n\n this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_);\n this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_);\n this.off();\n }\n /**\n * return the master playlist object if we have one\n *\n * @return {Object} the master playlist object that we parsed\n */\n ;\n\n _proto.master = function master() {\n return this.masterPlaylistLoader_.master;\n }\n /**\n * return the currently selected playlist\n *\n * @return {Object} the currently selected playlist object that we parsed\n */\n ;\n\n _proto.media = function media() {\n // playlist loader will not return media if it has not been fully loaded\n return this.masterPlaylistLoader_.media() || this.initialMedia_;\n };\n\n _proto.areMediaTypesKnown_ = function areMediaTypesKnown_() {\n var usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n var hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info\n // otherwise check on the segment loader.\n\n var hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs\n\n if (!hasMainMediaInfo || !hasAudioMediaInfo) {\n return false;\n }\n\n return true;\n };\n\n _proto.getCodecsOrExclude_ = function getCodecsOrExclude_() {\n var _this9 = this;\n\n var media = {\n main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {},\n audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {}\n };\n var playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set \"main\" media equal to video\n\n media.video = media.main;\n var playlistCodecs = codecsForPlaylist(this.master(), playlist);\n var codecs = {};\n var usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n\n if (media.main.hasVideo) {\n codecs.video = playlistCodecs.video || media.main.videoCodec || DEFAULT_VIDEO_CODEC;\n }\n\n if (media.main.isMuxed) {\n codecs.video += \",\" + (playlistCodecs.audio || media.main.audioCodec || DEFAULT_AUDIO_CODEC);\n }\n\n if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) {\n codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct \"supports\" function below\n\n media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4;\n } // no codecs, no playback.\n\n\n if (!codecs.audio && !codecs.video) {\n this.blacklistCurrentPlaylist({\n playlist: playlist,\n message: 'Could not determine codecs for playlist.',\n blacklistDuration: Infinity\n });\n return;\n } // fmp4 relies on browser support, while ts relies on muxer support\n\n\n var supportFunction = function supportFunction(isFmp4, codec) {\n return isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec);\n };\n\n var unsupportedCodecs = {};\n var unsupportedAudio;\n ['video', 'audio'].forEach(function (type) {\n if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) {\n var supporter = media[type].isFmp4 ? 'browser' : 'muxer';\n unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || [];\n unsupportedCodecs[supporter].push(codecs[type]);\n\n if (type === 'audio') {\n unsupportedAudio = supporter;\n }\n }\n });\n\n if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) {\n var audioGroup = playlist.attributes.AUDIO;\n this.master().playlists.forEach(function (variant) {\n var variantAudioGroup = variant.attributes && variant.attributes.AUDIO;\n\n if (variantAudioGroup === audioGroup && variant !== playlist) {\n variant.excludeUntil = Infinity;\n }\n });\n this.logger_(\"excluding audio group \" + audioGroup + \" as \" + unsupportedAudio + \" does not support codec(s): \\\"\" + codecs.audio + \"\\\"\");\n } // if we have any unsupported codecs blacklist this playlist.\n\n\n if (Object.keys(unsupportedCodecs).length) {\n var message = Object.keys(unsupportedCodecs).reduce(function (acc, supporter) {\n if (acc) {\n acc += ', ';\n }\n\n acc += supporter + \" does not support codec(s): \\\"\" + unsupportedCodecs[supporter].join(',') + \"\\\"\";\n return acc;\n }, '') + '.';\n this.blacklistCurrentPlaylist({\n playlist: playlist,\n internal: true,\n message: message,\n blacklistDuration: Infinity\n });\n return;\n } // check if codec switching is happening\n\n\n if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) {\n var switchMessages = [];\n ['video', 'audio'].forEach(function (type) {\n var newCodec = (parseCodecs(_this9.sourceUpdater_.codecs[type] || '')[0] || {}).type;\n var oldCodec = (parseCodecs(codecs[type] || '')[0] || {}).type;\n\n if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) {\n switchMessages.push(\"\\\"\" + _this9.sourceUpdater_.codecs[type] + \"\\\" -> \\\"\" + codecs[type] + \"\\\"\");\n }\n });\n\n if (switchMessages.length) {\n this.blacklistCurrentPlaylist({\n playlist: playlist,\n message: \"Codec switching not supported: \" + switchMessages.join(', ') + \".\",\n blacklistDuration: Infinity,\n internal: true\n });\n return;\n }\n } // TODO: when using the muxer shouldn't we just return\n // the codecs that the muxer outputs?\n\n\n return codecs;\n }\n /**\n * Create source buffers and exlude any incompatible renditions.\n *\n * @private\n */\n ;\n\n _proto.tryToCreateSourceBuffers_ = function tryToCreateSourceBuffers_() {\n // media source is not ready yet or sourceBuffers are already\n // created.\n if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) {\n return;\n }\n\n if (!this.areMediaTypesKnown_()) {\n return;\n }\n\n var codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n if (!codecs) {\n return;\n }\n\n this.sourceUpdater_.createSourceBuffers(codecs);\n var codecString = [codecs.video, codecs.audio].filter(Boolean).join(',');\n this.excludeIncompatibleVariants_(codecString);\n }\n /**\n * Excludes playlists with codecs that are unsupported by the muxer and browser.\n */\n ;\n\n _proto.excludeUnsupportedVariants_ = function excludeUnsupportedVariants_() {\n var _this10 = this;\n\n var playlists = this.master().playlists;\n var ids = []; // TODO: why don't we have a property to loop through all\n // playlist? Why did we ever mix indexes and keys?\n\n Object.keys(playlists).forEach(function (key) {\n var variant = playlists[key]; // check if we already processed this playlist.\n\n if (ids.indexOf(variant.id) !== -1) {\n return;\n }\n\n ids.push(variant.id);\n var codecs = codecsForPlaylist(_this10.master, variant);\n var unsupported = [];\n\n if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {\n unsupported.push(\"audio codec \" + codecs.audio);\n }\n\n if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {\n unsupported.push(\"video codec \" + codecs.video);\n }\n\n if (codecs.text && codecs.text === 'stpp.ttml.im1t') {\n unsupported.push(\"text codec \" + codecs.text);\n }\n\n if (unsupported.length) {\n variant.excludeUntil = Infinity;\n\n _this10.logger_(\"excluding \" + variant.id + \" for unsupported: \" + unsupported.join(', '));\n }\n });\n }\n /**\n * Blacklist playlists that are known to be codec or\n * stream-incompatible with the SourceBuffer configuration. For\n * instance, Media Source Extensions would cause the video element to\n * stall waiting for video data if you switched from a variant with\n * video and audio to an audio-only one.\n *\n * @param {Object} media a media playlist compatible with the current\n * set of SourceBuffers. Variants in the current master playlist that\n * do not appear to have compatible codec or stream configurations\n * will be excluded from the default playlist selection algorithm\n * indefinitely.\n * @private\n */\n ;\n\n _proto.excludeIncompatibleVariants_ = function excludeIncompatibleVariants_(codecString) {\n var _this11 = this;\n\n var ids = [];\n var playlists = this.master().playlists;\n var codecs = unwrapCodecList(parseCodecs(codecString));\n var codecCount_ = codecCount(codecs);\n var videoDetails = codecs.video && parseCodecs(codecs.video)[0] || null;\n var audioDetails = codecs.audio && parseCodecs(codecs.audio)[0] || null;\n Object.keys(playlists).forEach(function (key) {\n var variant = playlists[key]; // check if we already processed this playlist.\n // or it if it is already excluded forever.\n\n if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) {\n return;\n }\n\n ids.push(variant.id);\n var blacklistReasons = []; // get codecs from the playlist for this variant\n\n var variantCodecs = codecsForPlaylist(_this11.masterPlaylistLoader_.master, variant);\n var variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this\n // variant is incompatible. Wait for mux.js to probe\n\n if (!variantCodecs.audio && !variantCodecs.video) {\n return;\n } // TODO: we can support this by removing the\n // old media source and creating a new one, but it will take some work.\n // The number of streams cannot change\n\n\n if (variantCodecCount !== codecCount_) {\n blacklistReasons.push(\"codec count \\\"\" + variantCodecCount + \"\\\" !== \\\"\" + codecCount_ + \"\\\"\");\n } // only exclude playlists by codec change, if codecs cannot switch\n // during playback.\n\n\n if (!_this11.sourceUpdater_.canChangeType()) {\n var variantVideoDetails = variantCodecs.video && parseCodecs(variantCodecs.video)[0] || null;\n var variantAudioDetails = variantCodecs.audio && parseCodecs(variantCodecs.audio)[0] || null; // the video codec cannot change\n\n if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) {\n blacklistReasons.push(\"video codec \\\"\" + variantVideoDetails.type + \"\\\" !== \\\"\" + videoDetails.type + \"\\\"\");\n } // the audio codec cannot change\n\n\n if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) {\n blacklistReasons.push(\"audio codec \\\"\" + variantAudioDetails.type + \"\\\" !== \\\"\" + audioDetails.type + \"\\\"\");\n }\n }\n\n if (blacklistReasons.length) {\n variant.excludeUntil = Infinity;\n\n _this11.logger_(\"blacklisting \" + variant.id + \": \" + blacklistReasons.join(' && '));\n }\n });\n };\n\n _proto.updateAdCues_ = function updateAdCues_(media) {\n var offset = 0;\n var seekable = this.seekable();\n\n if (seekable.length) {\n offset = seekable.start(0);\n }\n\n updateAdCues(media, this.cueTagsTrack_, offset);\n }\n /**\n * Calculates the desired forward buffer length based on current time\n *\n * @return {number} Desired forward buffer length in seconds\n */\n ;\n\n _proto.goalBufferLength = function goalBufferLength() {\n var currentTime = this.tech_.currentTime();\n var initial = Config.GOAL_BUFFER_LENGTH;\n var rate = Config.GOAL_BUFFER_LENGTH_RATE;\n var max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);\n return Math.min(initial + currentTime * rate, max);\n }\n /**\n * Calculates the desired buffer low water line based on current time\n *\n * @return {number} Desired buffer low water line in seconds\n */\n ;\n\n _proto.bufferLowWaterLine = function bufferLowWaterLine() {\n var currentTime = this.tech_.currentTime();\n var initial = Config.BUFFER_LOW_WATER_LINE;\n var rate = Config.BUFFER_LOW_WATER_LINE_RATE;\n var max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);\n var newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);\n return Math.min(initial + currentTime * rate, this.experimentalBufferBasedABR ? newMax : max);\n };\n\n _proto.bufferHighWaterLine = function bufferHighWaterLine() {\n return Config.BUFFER_HIGH_WATER_LINE;\n };\n\n return MasterPlaylistController;\n}(videojs.EventTarget);\n/**\n * Returns a function that acts as the Enable/disable playlist function.\n *\n * @param {PlaylistLoader} loader - The master playlist loader\n * @param {string} playlistID - id of the playlist\n * @param {Function} changePlaylistFn - A function to be called after a\n * playlist's enabled-state has been changed. Will NOT be called if a\n * playlist's enabled-state is unchanged\n * @param {boolean=} enable - Value to set the playlist enabled-state to\n * or if undefined returns the current enabled-state for the playlist\n * @return {Function} Function for setting/getting enabled\n */\n\n\nvar enableFunction = function enableFunction(loader, playlistID, changePlaylistFn) {\n return function (enable) {\n var playlist = loader.master.playlists[playlistID];\n var incompatible = isIncompatible(playlist);\n var currentlyEnabled = isEnabled(playlist);\n\n if (typeof enable === 'undefined') {\n return currentlyEnabled;\n }\n\n if (enable) {\n delete playlist.disabled;\n } else {\n playlist.disabled = true;\n }\n\n if (enable !== currentlyEnabled && !incompatible) {\n // Ensure the outside world knows about our changes\n changePlaylistFn();\n\n if (enable) {\n loader.trigger('renditionenabled');\n } else {\n loader.trigger('renditiondisabled');\n }\n }\n\n return enable;\n };\n};\n/**\n * The representation object encapsulates the publicly visible information\n * in a media playlist along with a setter/getter-type function (enabled)\n * for changing the enabled-state of a particular playlist entry\n *\n * @class Representation\n */\n\n\nvar Representation = function Representation(vhsHandler, playlist, id) {\n var mpc = vhsHandler.masterPlaylistController_,\n smoothQualityChange = vhsHandler.options_.smoothQualityChange; // Get a reference to a bound version of the quality change function\n\n var changeType = smoothQualityChange ? 'smooth' : 'fast';\n var qualityChangeFunction = mpc[changeType + \"QualityChange_\"].bind(mpc); // some playlist attributes are optional\n\n if (playlist.attributes) {\n var resolution = playlist.attributes.RESOLUTION;\n this.width = resolution && resolution.width;\n this.height = resolution && resolution.height;\n this.bandwidth = playlist.attributes.BANDWIDTH;\n this.frameRate = playlist.attributes['FRAME-RATE'];\n }\n\n this.codecs = codecsForPlaylist(mpc.master(), playlist);\n this.playlist = playlist; // The id is simply the ordinality of the media playlist\n // within the master playlist\n\n this.id = id; // Partially-apply the enableFunction to create a playlist-\n // specific variant\n\n this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction);\n};\n/**\n * A mixin function that adds the `representations` api to an instance\n * of the VhsHandler class\n *\n * @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the\n * representation API into\n */\n\n\nvar renditionSelectionMixin = function renditionSelectionMixin(vhsHandler) {\n // Add a single API-specific function to the VhsHandler instance\n vhsHandler.representations = function () {\n var master = vhsHandler.masterPlaylistController_.master();\n var playlists = isAudioOnly(master) ? vhsHandler.masterPlaylistController_.getAudioTrackPlaylists_() : master.playlists;\n\n if (!playlists) {\n return [];\n }\n\n return playlists.filter(function (media) {\n return !isIncompatible(media);\n }).map(function (e, i) {\n return new Representation(vhsHandler, e, e.id);\n });\n };\n};\n/**\n * @file playback-watcher.js\n *\n * Playback starts, and now my watch begins. It shall not end until my death. I shall\n * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns\n * and win no glory. I shall live and die at my post. I am the corrector of the underflow.\n * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge\n * my life and honor to the Playback Watch, for this Player and all the Players to come.\n */\n\n\nvar timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];\n/**\n * @class PlaybackWatcher\n */\n\nvar PlaybackWatcher = /*#__PURE__*/function () {\n /**\n * Represents an PlaybackWatcher object.\n *\n * @class\n * @param {Object} options an object that includes the tech and settings\n */\n function PlaybackWatcher(options) {\n var _this = this;\n\n this.masterPlaylistController_ = options.masterPlaylistController;\n this.tech_ = options.tech;\n this.seekable = options.seekable;\n this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;\n this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta;\n this.media = options.media;\n this.consecutiveUpdates = 0;\n this.lastRecordedTime = null;\n this.timer_ = null;\n this.checkCurrentTimeTimeout_ = null;\n this.logger_ = logger('PlaybackWatcher');\n this.logger_('initialize');\n\n var playHandler = function playHandler() {\n return _this.monitorCurrentTime_();\n };\n\n var canPlayHandler = function canPlayHandler() {\n return _this.monitorCurrentTime_();\n };\n\n var waitingHandler = function waitingHandler() {\n return _this.techWaiting_();\n };\n\n var cancelTimerHandler = function cancelTimerHandler() {\n return _this.cancelTimer_();\n };\n\n var mpc = this.masterPlaylistController_;\n var loaderTypes = ['main', 'subtitle', 'audio'];\n var loaderChecks = {};\n loaderTypes.forEach(function (type) {\n loaderChecks[type] = {\n reset: function reset() {\n return _this.resetSegmentDownloads_(type);\n },\n updateend: function updateend() {\n return _this.checkSegmentDownloads_(type);\n }\n };\n mpc[type + \"SegmentLoader_\"].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer\n // isn't changing we want to reset. We cannot assume that the new rendition\n // will also be stalled, until after new appends.\n\n mpc[type + \"SegmentLoader_\"].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking.\n // This prevents one segment playlists (single vtt or single segment content)\n // from being detected as stalling. As the buffer will not change in those cases, since\n // the buffer is the entire video duration.\n\n _this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset);\n });\n /**\n * We check if a seek was into a gap through the following steps:\n * 1. We get a seeking event and we do not get a seeked event. This means that\n * a seek was attempted but not completed.\n * 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already\n * removed everything from our buffer and appended a segment, and should be ready\n * to check for gaps.\n */\n\n var setSeekingHandlers = function setSeekingHandlers(fn) {\n ['main', 'audio'].forEach(function (type) {\n mpc[type + \"SegmentLoader_\"][fn]('appended', _this.seekingAppendCheck_);\n });\n };\n\n this.seekingAppendCheck_ = function () {\n if (_this.fixesBadSeeks_()) {\n _this.consecutiveUpdates = 0;\n _this.lastRecordedTime = _this.tech_.currentTime();\n setSeekingHandlers('off');\n }\n };\n\n this.clearSeekingAppendCheck_ = function () {\n return setSeekingHandlers('off');\n };\n\n this.watchForBadSeeking_ = function () {\n _this.clearSeekingAppendCheck_();\n\n setSeekingHandlers('on');\n };\n\n this.tech_.on('seeked', this.clearSeekingAppendCheck_);\n this.tech_.on('seeking', this.watchForBadSeeking_);\n this.tech_.on('waiting', waitingHandler);\n this.tech_.on(timerCancelEvents, cancelTimerHandler);\n this.tech_.on('canplay', canPlayHandler);\n /*\n An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case\n is surfaced in one of two ways:\n 1) The `waiting` event is fired before the player has buffered content, making it impossible\n to find or skip the gap. The `waiting` event is followed by a `play` event. On first play\n we can check if playback is stalled due to a gap, and skip the gap if necessary.\n 2) A source with a gap at the beginning of the stream is loaded programatically while the player\n is in a playing state. To catch this case, it's important that our one-time play listener is setup\n even if the player is in a playing state\n */\n\n this.tech_.one('play', playHandler); // Define the dispose function to clean up our events\n\n this.dispose = function () {\n _this.clearSeekingAppendCheck_();\n\n _this.logger_('dispose');\n\n _this.tech_.off('waiting', waitingHandler);\n\n _this.tech_.off(timerCancelEvents, cancelTimerHandler);\n\n _this.tech_.off('canplay', canPlayHandler);\n\n _this.tech_.off('play', playHandler);\n\n _this.tech_.off('seeking', _this.watchForBadSeeking_);\n\n _this.tech_.off('seeked', _this.clearSeekingAppendCheck_);\n\n loaderTypes.forEach(function (type) {\n mpc[type + \"SegmentLoader_\"].off('appendsdone', loaderChecks[type].updateend);\n mpc[type + \"SegmentLoader_\"].off('playlistupdate', loaderChecks[type].reset);\n\n _this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset);\n });\n\n if (_this.checkCurrentTimeTimeout_) {\n window$1.clearTimeout(_this.checkCurrentTimeTimeout_);\n }\n\n _this.cancelTimer_();\n };\n }\n /**\n * Periodically check current time to see if playback stopped\n *\n * @private\n */\n\n\n var _proto = PlaybackWatcher.prototype;\n\n _proto.monitorCurrentTime_ = function monitorCurrentTime_() {\n this.checkCurrentTime_();\n\n if (this.checkCurrentTimeTimeout_) {\n window$1.clearTimeout(this.checkCurrentTimeTimeout_);\n } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n\n\n this.checkCurrentTimeTimeout_ = window$1.setTimeout(this.monitorCurrentTime_.bind(this), 250);\n }\n /**\n * Reset stalled download stats for a specific type of loader\n *\n * @param {string} type\n * The segment loader type to check.\n *\n * @listens SegmentLoader#playlistupdate\n * @listens Tech#seeking\n * @listens Tech#seeked\n */\n ;\n\n _proto.resetSegmentDownloads_ = function resetSegmentDownloads_(type) {\n var loader = this.masterPlaylistController_[type + \"SegmentLoader_\"];\n\n if (this[type + \"StalledDownloads_\"] > 0) {\n this.logger_(\"resetting possible stalled download count for \" + type + \" loader\");\n }\n\n this[type + \"StalledDownloads_\"] = 0;\n this[type + \"Buffered_\"] = loader.buffered_();\n }\n /**\n * Checks on every segment `appendsdone` to see\n * if segment appends are making progress. If they are not\n * and we are still downloading bytes. We blacklist the playlist.\n *\n * @param {string} type\n * The segment loader type to check.\n *\n * @listens SegmentLoader#appendsdone\n */\n ;\n\n _proto.checkSegmentDownloads_ = function checkSegmentDownloads_(type) {\n var mpc = this.masterPlaylistController_;\n var loader = mpc[type + \"SegmentLoader_\"];\n var buffered = loader.buffered_();\n var isBufferedDifferent = isRangeDifferent(this[type + \"Buffered_\"], buffered);\n this[type + \"Buffered_\"] = buffered; // if another watcher is going to fix the issue or\n // the buffered value for this loader changed\n // appends are working\n\n if (isBufferedDifferent) {\n this.resetSegmentDownloads_(type);\n return;\n }\n\n this[type + \"StalledDownloads_\"]++;\n this.logger_(\"found #\" + this[type + \"StalledDownloads_\"] + \" \" + type + \" appends that did not increase buffer (possible stalled download)\", {\n playlistId: loader.playlist_ && loader.playlist_.id,\n buffered: timeRangesToArray(buffered)\n }); // after 10 possibly stalled appends with no reset, exclude\n\n if (this[type + \"StalledDownloads_\"] < 10) {\n return;\n }\n\n this.logger_(type + \" loader stalled download exclusion\");\n this.resetSegmentDownloads_(type);\n this.tech_.trigger({\n type: 'usage',\n name: \"vhs-\" + type + \"-download-exclusion\"\n });\n\n if (type === 'subtitle') {\n return;\n } // TODO: should we exclude audio tracks rather than main tracks\n // when type is audio?\n\n\n mpc.blacklistCurrentPlaylist({\n message: \"Excessive \" + type + \" segment downloading detected.\"\n }, Infinity);\n }\n /**\n * The purpose of this function is to emulate the \"waiting\" event on\n * browsers that do not emit it when they are waiting for more\n * data to continue playback\n *\n * @private\n */\n ;\n\n _proto.checkCurrentTime_ = function checkCurrentTime_() {\n if (this.tech_.paused() || this.tech_.seeking()) {\n return;\n }\n\n var currentTime = this.tech_.currentTime();\n var buffered = this.tech_.buffered();\n\n if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {\n // If current time is at the end of the final buffered region, then any playback\n // stall is most likely caused by buffering in a low bandwidth environment. The tech\n // should fire a `waiting` event in this scenario, but due to browser and tech\n // inconsistencies. Calling `techWaiting_` here allows us to simulate\n // responding to a native `waiting` event when the tech fails to emit one.\n return this.techWaiting_();\n }\n\n if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {\n this.consecutiveUpdates++;\n this.waiting_();\n } else if (currentTime === this.lastRecordedTime) {\n this.consecutiveUpdates++;\n } else {\n this.consecutiveUpdates = 0;\n this.lastRecordedTime = currentTime;\n }\n }\n /**\n * Cancels any pending timers and resets the 'timeupdate' mechanism\n * designed to detect that we are stalled\n *\n * @private\n */\n ;\n\n _proto.cancelTimer_ = function cancelTimer_() {\n this.consecutiveUpdates = 0;\n\n if (this.timer_) {\n this.logger_('cancelTimer_');\n clearTimeout(this.timer_);\n }\n\n this.timer_ = null;\n }\n /**\n * Fixes situations where there's a bad seek\n *\n * @return {boolean} whether an action was taken to fix the seek\n * @private\n */\n ;\n\n _proto.fixesBadSeeks_ = function fixesBadSeeks_() {\n var seeking = this.tech_.seeking();\n\n if (!seeking) {\n return false;\n } // TODO: It's possible that these seekable checks should be moved out of this function\n // and into a function that runs on seekablechange. It's also possible that we only need\n // afterSeekableWindow as the buffered check at the bottom is good enough to handle before\n // seekable range.\n\n\n var seekable = this.seekable();\n var currentTime = this.tech_.currentTime();\n var isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);\n var seekTo;\n\n if (isAfterSeekableRange) {\n var seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)\n\n seekTo = seekableEnd;\n }\n\n if (this.beforeSeekableWindow_(seekable, currentTime)) {\n var seekableStart = seekable.start(0); // sync to the beginning of the live window\n // provide a buffer of .1 seconds to handle rounding/imprecise numbers\n\n seekTo = seekableStart + ( // if the playlist is too short and the seekable range is an exact time (can\n // happen in live with a 3 segment playlist), then don't use a time delta\n seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA);\n }\n\n if (typeof seekTo !== 'undefined') {\n this.logger_(\"Trying to seek outside of seekable at time \" + currentTime + \" with \" + (\"seekable range \" + printableRange(seekable) + \". Seeking to \") + (seekTo + \".\"));\n this.tech_.setCurrentTime(seekTo);\n return true;\n }\n\n var sourceUpdater = this.masterPlaylistController_.sourceUpdater_;\n var buffered = this.tech_.buffered();\n var audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null;\n var videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null;\n var media = this.media(); // verify that at least two segment durations or one part duration have been\n // appended before checking for a gap.\n\n var minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been\n // appended before checking for a gap.\n\n var bufferedToCheck = [audioBuffered, videoBuffered];\n\n for (var i = 0; i < bufferedToCheck.length; i++) {\n // skip null buffered\n if (!bufferedToCheck[i]) {\n continue;\n }\n\n var timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part\n // duration behind we haven't appended enough to call this a bad seek.\n\n if (timeAhead < minAppendedDuration) {\n return false;\n }\n }\n\n var nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered\n // to seek over the gap\n\n if (nextRange.length === 0) {\n return false;\n }\n\n seekTo = nextRange.start(0) + SAFE_TIME_DELTA;\n this.logger_(\"Buffered region starts (\" + nextRange.start(0) + \") \" + (\" just beyond seek point (\" + currentTime + \"). Seeking to \" + seekTo + \".\"));\n this.tech_.setCurrentTime(seekTo);\n return true;\n }\n /**\n * Handler for situations when we determine the player is waiting.\n *\n * @private\n */\n ;\n\n _proto.waiting_ = function waiting_() {\n if (this.techWaiting_()) {\n return;\n } // All tech waiting checks failed. Use last resort correction\n\n\n var currentTime = this.tech_.currentTime();\n var buffered = this.tech_.buffered();\n var currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered\n // region with no indication that anything is amiss (seen in Firefox). Seeking to\n // currentTime is usually enough to kickstart the player. This checks that the player\n // is currently within a buffered region before attempting a corrective seek.\n // Chrome does not appear to continue `timeupdate` events after a `waiting` event\n // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also\n // make sure there is ~3 seconds of forward buffer before taking any corrective action\n // to avoid triggering an `unknownwaiting` event when the network is slow.\n\n if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {\n this.cancelTimer_();\n this.tech_.setCurrentTime(currentTime);\n this.logger_(\"Stopped at \" + currentTime + \" while inside a buffered region \" + (\"[\" + currentRange.start(0) + \" -> \" + currentRange.end(0) + \"]. Attempting to resume \") + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-unknown-waiting'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-unknown-waiting'\n });\n return;\n }\n }\n /**\n * Handler for situations when the tech fires a `waiting` event\n *\n * @return {boolean}\n * True if an action (or none) was needed to correct the waiting. False if no\n * checks passed\n * @private\n */\n ;\n\n _proto.techWaiting_ = function techWaiting_() {\n var seekable = this.seekable();\n var currentTime = this.tech_.currentTime();\n\n if (this.tech_.seeking() || this.timer_ !== null) {\n // Tech is seeking or already waiting on another action, no action needed\n return true;\n }\n\n if (this.beforeSeekableWindow_(seekable, currentTime)) {\n var livePoint = seekable.end(seekable.length - 1);\n this.logger_(\"Fell out of live window at time \" + currentTime + \". Seeking to \" + (\"live point (seekable end) \" + livePoint));\n this.cancelTimer_();\n this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-live-resync'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-live-resync'\n });\n return true;\n }\n\n var sourceUpdater = this.tech_.vhs.masterPlaylistController_.sourceUpdater_;\n var buffered = this.tech_.buffered();\n var videoUnderflow = this.videoUnderflow_({\n audioBuffered: sourceUpdater.audioBuffered(),\n videoBuffered: sourceUpdater.videoBuffered(),\n currentTime: currentTime\n });\n\n if (videoUnderflow) {\n // Even though the video underflowed and was stuck in a gap, the audio overplayed\n // the gap, leading currentTime into a buffered range. Seeking to currentTime\n // allows the video to catch up to the audio position without losing any audio\n // (only suffering ~3 seconds of frozen video and a pause in audio playback).\n this.cancelTimer_();\n this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-video-underflow'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-video-underflow'\n });\n return true;\n }\n\n var nextRange = findNextRange(buffered, currentTime); // check for gap\n\n if (nextRange.length > 0) {\n var difference = nextRange.start(0) - currentTime;\n this.logger_(\"Stopped at \" + currentTime + \", setting timer for \" + difference + \", seeking \" + (\"to \" + nextRange.start(0)));\n this.cancelTimer_();\n this.timer_ = setTimeout(this.skipTheGap_.bind(this), difference * 1000, currentTime);\n return true;\n } // All checks failed. Returning false to indicate failure to correct waiting\n\n\n return false;\n };\n\n _proto.afterSeekableWindow_ = function afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow) {\n if (allowSeeksWithinUnsafeLiveWindow === void 0) {\n allowSeeksWithinUnsafeLiveWindow = false;\n }\n\n if (!seekable.length) {\n // we can't make a solid case if there's no seekable, default to false\n return false;\n }\n\n var allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;\n var isLive = !playlist.endList;\n\n if (isLive && allowSeeksWithinUnsafeLiveWindow) {\n allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;\n }\n\n if (currentTime > allowedEnd) {\n return true;\n }\n\n return false;\n };\n\n _proto.beforeSeekableWindow_ = function beforeSeekableWindow_(seekable, currentTime) {\n if (seekable.length && // can't fall before 0 and 0 seekable start identifies VOD stream\n seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) {\n return true;\n }\n\n return false;\n };\n\n _proto.videoUnderflow_ = function videoUnderflow_(_ref) {\n var videoBuffered = _ref.videoBuffered,\n audioBuffered = _ref.audioBuffered,\n currentTime = _ref.currentTime; // audio only content will not have video underflow :)\n\n if (!videoBuffered) {\n return;\n }\n\n var gap; // find a gap in demuxed content.\n\n if (videoBuffered.length && audioBuffered.length) {\n // in Chrome audio will continue to play for ~3s when we run out of video\n // so we have to check that the video buffer did have some buffer in the\n // past.\n var lastVideoRange = findRange(videoBuffered, currentTime - 3);\n var videoRange = findRange(videoBuffered, currentTime);\n var audioRange = findRange(audioBuffered, currentTime);\n\n if (audioRange.length && !videoRange.length && lastVideoRange.length) {\n gap = {\n start: lastVideoRange.end(0),\n end: audioRange.end(0)\n };\n } // find a gap in muxed content.\n\n } else {\n var nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are\n // stuck in a gap due to video underflow.\n\n if (!nextRange.length) {\n gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime);\n }\n }\n\n if (gap) {\n this.logger_(\"Encountered a gap in video from \" + gap.start + \" to \" + gap.end + \". \" + (\"Seeking to current time \" + currentTime));\n return true;\n }\n\n return false;\n }\n /**\n * Timer callback. If playback still has not proceeded, then we seek\n * to the start of the next buffered region.\n *\n * @private\n */\n ;\n\n _proto.skipTheGap_ = function skipTheGap_(scheduledCurrentTime) {\n var buffered = this.tech_.buffered();\n var currentTime = this.tech_.currentTime();\n var nextRange = findNextRange(buffered, currentTime);\n this.cancelTimer_();\n\n if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {\n return;\n }\n\n this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played\n\n this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR);\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-gap-skip'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-gap-skip'\n });\n };\n\n _proto.gapFromVideoUnderflow_ = function gapFromVideoUnderflow_(buffered, currentTime) {\n // At least in Chrome, if there is a gap in the video buffer, the audio will continue\n // playing for ~3 seconds after the video gap starts. This is done to account for\n // video buffer underflow/underrun (note that this is not done when there is audio\n // buffer underflow/underrun -- in that case the video will stop as soon as it\n // encounters the gap, as audio stalls are more noticeable/jarring to a user than\n // video stalls). The player's time will reflect the playthrough of audio, so the\n // time will appear as if we are in a buffered region, even if we are stuck in a\n // \"gap.\"\n //\n // Example:\n // video buffer: 0 => 10.1, 10.2 => 20\n // audio buffer: 0 => 20\n // overall buffer: 0 => 10.1, 10.2 => 20\n // current time: 13\n //\n // Chrome's video froze at 10 seconds, where the video buffer encountered the gap,\n // however, the audio continued playing until it reached ~3 seconds past the gap\n // (13 seconds), at which point it stops as well. Since current time is past the\n // gap, findNextRange will return no ranges.\n //\n // To check for this issue, we see if there is a gap that starts somewhere within\n // a 3 second range (3 seconds +/- 1 second) back from our current time.\n var gaps = findGaps(buffered);\n\n for (var i = 0; i < gaps.length; i++) {\n var start = gaps.start(i);\n var end = gaps.end(i); // gap is starts no more than 4 seconds back\n\n if (currentTime - start < 4 && currentTime - start > 2) {\n return {\n start: start,\n end: end\n };\n }\n }\n\n return null;\n };\n\n return PlaybackWatcher;\n}();\n\nvar defaultOptions = {\n errorInterval: 30,\n getSource: function getSource(next) {\n var tech = this.tech({\n IWillNotUseThisInPlugins: true\n });\n var sourceObj = tech.currentSource_ || this.currentSource();\n return next(sourceObj);\n }\n};\n/**\n * Main entry point for the plugin\n *\n * @param {Player} player a reference to a videojs Player instance\n * @param {Object} [options] an object with plugin options\n * @private\n */\n\nvar initPlugin = function initPlugin(player, options) {\n var lastCalled = 0;\n var seekTo = 0;\n var localOptions = videojs.mergeOptions(defaultOptions, options);\n player.ready(function () {\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload-initialized'\n });\n player.trigger({\n type: 'usage',\n name: 'hls-error-reload-initialized'\n });\n });\n /**\n * Player modifications to perform that must wait until `loadedmetadata`\n * has been triggered\n *\n * @private\n */\n\n var loadedMetadataHandler = function loadedMetadataHandler() {\n if (seekTo) {\n player.currentTime(seekTo);\n }\n };\n /**\n * Set the source on the player element, play, and seek if necessary\n *\n * @param {Object} sourceObj An object specifying the source url and mime-type to play\n * @private\n */\n\n\n var setSource = function setSource(sourceObj) {\n if (sourceObj === null || sourceObj === undefined) {\n return;\n }\n\n seekTo = player.duration() !== Infinity && player.currentTime() || 0;\n player.one('loadedmetadata', loadedMetadataHandler);\n player.src(sourceObj);\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload'\n });\n player.trigger({\n type: 'usage',\n name: 'hls-error-reload'\n });\n player.play();\n };\n /**\n * Attempt to get a source from either the built-in getSource function\n * or a custom function provided via the options\n *\n * @private\n */\n\n\n var errorHandler = function errorHandler() {\n // Do not attempt to reload the source if a source-reload occurred before\n // 'errorInterval' time has elapsed since the last source-reload\n if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload-canceled'\n });\n player.trigger({\n type: 'usage',\n name: 'hls-error-reload-canceled'\n });\n return;\n }\n\n if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {\n videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');\n return;\n }\n\n lastCalled = Date.now();\n return localOptions.getSource.call(player, setSource);\n };\n /**\n * Unbind any event handlers that were bound by the plugin\n *\n * @private\n */\n\n\n var cleanupEvents = function cleanupEvents() {\n player.off('loadedmetadata', loadedMetadataHandler);\n player.off('error', errorHandler);\n player.off('dispose', cleanupEvents);\n };\n /**\n * Cleanup before re-initializing the plugin\n *\n * @param {Object} [newOptions] an object with plugin options\n * @private\n */\n\n\n var reinitPlugin = function reinitPlugin(newOptions) {\n cleanupEvents();\n initPlugin(player, newOptions);\n };\n\n player.on('error', errorHandler);\n player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before\n // initializing the plugin\n\n player.reloadSourceOnError = reinitPlugin;\n};\n/**\n * Reload the source when an error is detected as long as there\n * wasn't an error previously within the last 30 seconds\n *\n * @param {Object} [options] an object with plugin options\n */\n\n\nvar reloadSourceOnError = function reloadSourceOnError(options) {\n initPlugin(this, options);\n};\n\nvar version$4 = \"2.16.2\";\nvar version$3 = \"6.0.1\";\nvar version$2 = \"0.22.1\";\nvar version$1 = \"4.8.0\";\nvar version = \"3.1.3\";\nvar Vhs = {\n PlaylistLoader: PlaylistLoader,\n Playlist: Playlist,\n utils: utils,\n STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,\n INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,\n lastBandwidthSelector: lastBandwidthSelector,\n movingAverageBandwidthSelector: movingAverageBandwidthSelector,\n comparePlaylistBandwidth: comparePlaylistBandwidth,\n comparePlaylistResolution: comparePlaylistResolution,\n xhr: xhrFactory()\n}; // Define getter/setters for config properties\n\nObject.keys(Config).forEach(function (prop) {\n Object.defineProperty(Vhs, prop, {\n get: function get() {\n videojs.log.warn(\"using Vhs.\" + prop + \" is UNSAFE be sure you know what you are doing\");\n return Config[prop];\n },\n set: function set(value) {\n videojs.log.warn(\"using Vhs.\" + prop + \" is UNSAFE be sure you know what you are doing\");\n\n if (typeof value !== 'number' || value < 0) {\n videojs.log.warn(\"value of Vhs.\" + prop + \" must be greater than or equal to 0\");\n return;\n }\n\n Config[prop] = value;\n }\n });\n});\nvar LOCAL_STORAGE_KEY = 'videojs-vhs';\n/**\n * Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs.\n *\n * @param {QualityLevelList} qualityLevels The QualityLevelList to update.\n * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.\n * @function handleVhsMediaChange\n */\n\nvar handleVhsMediaChange = function handleVhsMediaChange(qualityLevels, playlistLoader) {\n var newPlaylist = playlistLoader.media();\n var selectedIndex = -1;\n\n for (var i = 0; i < qualityLevels.length; i++) {\n if (qualityLevels[i].id === newPlaylist.id) {\n selectedIndex = i;\n break;\n }\n }\n\n qualityLevels.selectedIndex_ = selectedIndex;\n qualityLevels.trigger({\n selectedIndex: selectedIndex,\n type: 'change'\n });\n};\n/**\n * Adds quality levels to list once playlist metadata is available\n *\n * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.\n * @param {Object} vhs Vhs object to listen to for media events.\n * @function handleVhsLoadedMetadata\n */\n\n\nvar handleVhsLoadedMetadata = function handleVhsLoadedMetadata(qualityLevels, vhs) {\n vhs.representations().forEach(function (rep) {\n qualityLevels.addQualityLevel(rep);\n });\n handleVhsMediaChange(qualityLevels, vhs.playlists);\n}; // HLS is a source handler, not a tech. Make sure attempts to use it\n// as one do not cause exceptions.\n\n\nVhs.canPlaySource = function () {\n return videojs.log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n};\n\nvar emeKeySystems = function emeKeySystems(keySystemOptions, mainPlaylist, audioPlaylist) {\n if (!keySystemOptions) {\n return keySystemOptions;\n }\n\n var codecs = {};\n\n if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) {\n codecs = unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS));\n }\n\n if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) {\n codecs.audio = audioPlaylist.attributes.CODECS;\n }\n\n var videoContentType = getMimeForCodec(codecs.video);\n var audioContentType = getMimeForCodec(codecs.audio); // upsert the content types based on the selected playlist\n\n var keySystemContentTypes = {};\n\n for (var keySystem in keySystemOptions) {\n keySystemContentTypes[keySystem] = {};\n\n if (audioContentType) {\n keySystemContentTypes[keySystem].audioContentType = audioContentType;\n }\n\n if (videoContentType) {\n keySystemContentTypes[keySystem].videoContentType = videoContentType;\n } // Default to using the video playlist's PSSH even though they may be different, as\n // videojs-contrib-eme will only accept one in the options.\n //\n // This shouldn't be an issue for most cases as early intialization will handle all\n // unique PSSH values, and if they aren't, then encrypted events should have the\n // specific information needed for the unique license.\n\n\n if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) {\n keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh;\n } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'\n // so we need to prevent overwriting the URL entirely\n\n\n if (typeof keySystemOptions[keySystem] === 'string') {\n keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];\n }\n }\n\n return videojs.mergeOptions(keySystemOptions, keySystemContentTypes);\n};\n/**\n * @typedef {Object} KeySystems\n *\n * keySystems configuration for https://github.com/videojs/videojs-contrib-eme\n * Note: not all options are listed here.\n *\n * @property {Uint8Array} [pssh]\n * Protection System Specific Header\n */\n\n/**\n * Goes through all the playlists and collects an array of KeySystems options objects\n * containing each playlist's keySystems and their pssh values, if available.\n *\n * @param {Object[]} playlists\n * The playlists to look through\n * @param {string[]} keySystems\n * The keySystems to collect pssh values for\n *\n * @return {KeySystems[]}\n * An array of KeySystems objects containing available key systems and their\n * pssh values\n */\n\n\nvar getAllPsshKeySystemsOptions = function getAllPsshKeySystemsOptions(playlists, keySystems) {\n return playlists.reduce(function (keySystemsArr, playlist) {\n if (!playlist.contentProtection) {\n return keySystemsArr;\n }\n\n var keySystemsOptions = keySystems.reduce(function (keySystemsObj, keySystem) {\n var keySystemOptions = playlist.contentProtection[keySystem];\n\n if (keySystemOptions && keySystemOptions.pssh) {\n keySystemsObj[keySystem] = {\n pssh: keySystemOptions.pssh\n };\n }\n\n return keySystemsObj;\n }, {});\n\n if (Object.keys(keySystemsOptions).length) {\n keySystemsArr.push(keySystemsOptions);\n }\n\n return keySystemsArr;\n }, []);\n};\n/**\n * Returns a promise that waits for the\n * [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session.\n *\n * Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11\n * browsers.\n *\n * As per the above ticket, this is particularly important for Chrome, where, if\n * unencrypted content is appended before encrypted content and the key session has not\n * been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached\n * during playback.\n *\n * @param {Object} player\n * The player instance\n * @param {Object[]} sourceKeySystems\n * The key systems options from the player source\n * @param {Object} [audioMedia]\n * The active audio media playlist (optional)\n * @param {Object[]} mainPlaylists\n * The playlists found on the master playlist object\n *\n * @return {Object}\n * Promise that resolves when the key session has been created\n */\n\n\nvar waitForKeySessionCreation = function waitForKeySessionCreation(_ref) {\n var player = _ref.player,\n sourceKeySystems = _ref.sourceKeySystems,\n audioMedia = _ref.audioMedia,\n mainPlaylists = _ref.mainPlaylists;\n\n if (!player.eme.initializeMediaKeys) {\n return Promise.resolve();\n } // TODO should all audio PSSH values be initialized for DRM?\n //\n // All unique video rendition pssh values are initialized for DRM, but here only\n // the initial audio playlist license is initialized. In theory, an encrypted\n // event should be fired if the user switches to an alternative audio playlist\n // where a license is required, but this case hasn't yet been tested. In addition, there\n // may be many alternate audio playlists unlikely to be used (e.g., multiple different\n // languages).\n\n\n var playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists;\n var keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));\n var initializationFinishedPromises = [];\n var keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The\n // only place where it should not be deduped is for ms-prefixed APIs, but the early\n // return for IE11 above, and the existence of modern EME APIs in addition to\n // ms-prefixed APIs on Edge should prevent this from being a concern.\n // initializeMediaKeys also won't use the webkit-prefixed APIs.\n\n keySystemsOptionsArr.forEach(function (keySystemsOptions) {\n keySessionCreatedPromises.push(new Promise(function (resolve, reject) {\n player.tech_.one('keysessioncreated', resolve);\n }));\n initializationFinishedPromises.push(new Promise(function (resolve, reject) {\n player.eme.initializeMediaKeys({\n keySystems: keySystemsOptions\n }, function (err) {\n if (err) {\n reject(err);\n return;\n }\n\n resolve();\n });\n }));\n }); // The reasons Promise.race is chosen over Promise.any:\n //\n // * Promise.any is only available in Safari 14+.\n // * None of these promises are expected to reject. If they do reject, it might be\n // better here for the race to surface the rejection, rather than mask it by using\n // Promise.any.\n\n return Promise.race([// If a session was previously created, these will all finish resolving without\n // creating a new session, otherwise it will take until the end of all license\n // requests, which is why the key session check is used (to make setup much faster).\n Promise.all(initializationFinishedPromises), // Once a single session is created, the browser knows DRM will be used.\n Promise.race(keySessionCreatedPromises)]);\n};\n/**\n * If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and\n * there are keySystems on the source, sets up source options to prepare the source for\n * eme.\n *\n * @param {Object} player\n * The player instance\n * @param {Object[]} sourceKeySystems\n * The key systems options from the player source\n * @param {Object} media\n * The active media playlist\n * @param {Object} [audioMedia]\n * The active audio media playlist (optional)\n *\n * @return {boolean}\n * Whether or not options were configured and EME is available\n */\n\n\nvar setupEmeOptions = function setupEmeOptions(_ref2) {\n var player = _ref2.player,\n sourceKeySystems = _ref2.sourceKeySystems,\n media = _ref2.media,\n audioMedia = _ref2.audioMedia;\n var sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia);\n\n if (!sourceOptions) {\n return false;\n }\n\n player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing\n // do nothing.\n\n if (sourceOptions && !player.eme) {\n videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin');\n return false;\n }\n\n return true;\n};\n\nvar getVhsLocalStorage = function getVhsLocalStorage() {\n if (!window$1.localStorage) {\n return null;\n }\n\n var storedObject = window$1.localStorage.getItem(LOCAL_STORAGE_KEY);\n\n if (!storedObject) {\n return null;\n }\n\n try {\n return JSON.parse(storedObject);\n } catch (e) {\n // someone may have tampered with the value\n return null;\n }\n};\n\nvar updateVhsLocalStorage = function updateVhsLocalStorage(options) {\n if (!window$1.localStorage) {\n return false;\n }\n\n var objectToStore = getVhsLocalStorage();\n objectToStore = objectToStore ? videojs.mergeOptions(objectToStore, options) : options;\n\n try {\n window$1.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore));\n } catch (e) {\n // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where\n // storage is set to 0).\n // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions\n // No need to perform any operation.\n return false;\n }\n\n return objectToStore;\n};\n/**\n * Parses VHS-supported media types from data URIs. See\n * https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs\n * for information on data URIs.\n *\n * @param {string} dataUri\n * The data URI\n *\n * @return {string|Object}\n * The parsed object/string, or the original string if no supported media type\n * was found\n */\n\n\nvar expandDataUri = function expandDataUri(dataUri) {\n if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) {\n return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1));\n } // no known case for this data URI, return the string as-is\n\n\n return dataUri;\n};\n/**\n * Whether the browser has built-in HLS support.\n */\n\n\nVhs.supportsNativeHls = function () {\n if (!document || !document.createElement) {\n return false;\n }\n\n var video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't\n\n if (!videojs.getTech('Html5').isSupported()) {\n return false;\n } // HLS manifests can go by many mime-types\n\n\n var canPlay = [// Apple santioned\n 'application/vnd.apple.mpegurl', // Apple sanctioned for backwards compatibility\n 'audio/mpegurl', // Very common\n 'audio/x-mpegurl', // Very common\n 'application/x-mpegurl', // Included for completeness\n 'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];\n return canPlay.some(function (canItPlay) {\n return /maybe|probably/i.test(video.canPlayType(canItPlay));\n });\n}();\n\nVhs.supportsNativeDash = function () {\n if (!document || !document.createElement || !videojs.getTech('Html5').isSupported()) {\n return false;\n }\n\n return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));\n}();\n\nVhs.supportsTypeNatively = function (type) {\n if (type === 'hls') {\n return Vhs.supportsNativeHls;\n }\n\n if (type === 'dash') {\n return Vhs.supportsNativeDash;\n }\n\n return false;\n};\n/**\n * HLS is a source handler, not a tech. Make sure attempts to use it\n * as one do not cause exceptions.\n */\n\n\nVhs.isSupported = function () {\n return videojs.log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n};\n\nvar Component = videojs.getComponent('Component');\n/**\n * The Vhs Handler object, where we orchestrate all of the parts\n * of HLS to interact with video.js\n *\n * @class VhsHandler\n * @extends videojs.Component\n * @param {Object} source the soruce object\n * @param {Tech} tech the parent tech object\n * @param {Object} options optional and required options\n */\n\nvar VhsHandler = /*#__PURE__*/function (_Component) {\n _inheritsLoose(VhsHandler, _Component);\n\n function VhsHandler(source, tech, options) {\n var _this;\n\n _this = _Component.call(this, tech, videojs.mergeOptions(options.hls, options.vhs)) || this;\n\n if (options.hls && Object.keys(options.hls).length) {\n videojs.log.warn('Using hls options is deprecated. Please rename `hls` to `vhs` in your options object.');\n } // if a tech level `initialBandwidth` option was passed\n // use that over the VHS level `bandwidth` option\n\n\n if (typeof options.initialBandwidth === 'number') {\n _this.options_.bandwidth = options.initialBandwidth;\n }\n\n _this.logger_ = logger('VhsHandler'); // tech.player() is deprecated but setup a reference to HLS for\n // backwards-compatibility\n\n if (tech.options_ && tech.options_.playerId) {\n var _player = videojs(tech.options_.playerId);\n\n if (!_player.hasOwnProperty('hls')) {\n Object.defineProperty(_player, 'hls', {\n get: function get() {\n videojs.log.warn('player.hls is deprecated. Use player.tech().vhs instead.');\n tech.trigger({\n type: 'usage',\n name: 'hls-player-access'\n });\n return _assertThisInitialized(_this);\n },\n configurable: true\n });\n }\n\n if (!_player.hasOwnProperty('vhs')) {\n Object.defineProperty(_player, 'vhs', {\n get: function get() {\n videojs.log.warn('player.vhs is deprecated. Use player.tech().vhs instead.');\n tech.trigger({\n type: 'usage',\n name: 'vhs-player-access'\n });\n return _assertThisInitialized(_this);\n },\n configurable: true\n });\n }\n\n if (!_player.hasOwnProperty('dash')) {\n Object.defineProperty(_player, 'dash', {\n get: function get() {\n videojs.log.warn('player.dash is deprecated. Use player.tech().vhs instead.');\n return _assertThisInitialized(_this);\n },\n configurable: true\n });\n }\n\n _this.player_ = _player;\n }\n\n _this.tech_ = tech;\n _this.source_ = source;\n _this.stats = {};\n _this.ignoreNextSeekingEvent_ = false;\n\n _this.setOptions_();\n\n if (_this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {\n tech.overrideNativeAudioTracks(true);\n tech.overrideNativeVideoTracks(true);\n } else if (_this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {\n // overriding native HLS only works if audio tracks have been emulated\n // error early if we're misconfigured\n throw new Error('Overriding native HLS requires emulated tracks. ' + 'See https://git.io/vMpjB');\n } // listen for fullscreenchange events for this player so that we\n // can adjust our quality selection quickly\n\n\n _this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], function (event) {\n var fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;\n\n if (fullscreenElement && fullscreenElement.contains(_this.tech_.el())) {\n _this.masterPlaylistController_.fastQualityChange_();\n } else {\n // When leaving fullscreen, since the in page pixel dimensions should be smaller\n // than full screen, see if there should be a rendition switch down to preserve\n // bandwidth.\n _this.masterPlaylistController_.checkABR_();\n }\n });\n\n _this.on(_this.tech_, 'seeking', function () {\n if (this.ignoreNextSeekingEvent_) {\n this.ignoreNextSeekingEvent_ = false;\n return;\n }\n\n this.setCurrentTime(this.tech_.currentTime());\n });\n\n _this.on(_this.tech_, 'error', function () {\n // verify that the error was real and we are loaded\n // enough to have mpc loaded.\n if (this.tech_.error() && this.masterPlaylistController_) {\n this.masterPlaylistController_.pauseLoading();\n }\n });\n\n _this.on(_this.tech_, 'play', _this.play);\n\n return _this;\n }\n\n var _proto = VhsHandler.prototype;\n\n _proto.setOptions_ = function setOptions_() {\n var _this2 = this; // defaults\n\n\n this.options_.withCredentials = this.options_.withCredentials || false;\n this.options_.handleManifestRedirects = this.options_.handleManifestRedirects === false ? false : true;\n this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;\n this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;\n this.options_.smoothQualityChange = this.options_.smoothQualityChange || false;\n this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;\n this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;\n this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;\n this.options_.customTagParsers = this.options_.customTagParsers || [];\n this.options_.customTagMappers = this.options_.customTagMappers || [];\n this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false;\n\n if (typeof this.options_.blacklistDuration !== 'number') {\n this.options_.blacklistDuration = 5 * 60;\n }\n\n if (typeof this.options_.bandwidth !== 'number') {\n if (this.options_.useBandwidthFromLocalStorage) {\n var storedObject = getVhsLocalStorage();\n\n if (storedObject && storedObject.bandwidth) {\n this.options_.bandwidth = storedObject.bandwidth;\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-bandwidth-from-local-storage'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-bandwidth-from-local-storage'\n });\n }\n\n if (storedObject && storedObject.throughput) {\n this.options_.throughput = storedObject.throughput;\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-throughput-from-local-storage'\n });\n this.tech_.trigger({\n type: 'usage',\n name: 'hls-throughput-from-local-storage'\n });\n }\n }\n } // if bandwidth was not set by options or pulled from local storage, start playlist\n // selection at a reasonable bandwidth\n\n\n if (typeof this.options_.bandwidth !== 'number') {\n this.options_.bandwidth = Config.INITIAL_BANDWIDTH;\n } // If the bandwidth number is unchanged from the initial setting\n // then this takes precedence over the enableLowInitialPlaylist option\n\n\n this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src\n\n ['withCredentials', 'useDevicePixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'smoothQualityChange', 'customTagParsers', 'customTagMappers', 'handleManifestRedirects', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'experimentalBufferBasedABR', 'liveRangeSafeTimeDelta', 'experimentalLLHLS', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'experimentalExactManifestTimings', 'experimentalLeastPixelDiffSelector'].forEach(function (option) {\n if (typeof _this2.source_[option] !== 'undefined') {\n _this2.options_[option] = _this2.source_[option];\n }\n });\n this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;\n this.useDevicePixelRatio = this.options_.useDevicePixelRatio;\n }\n /**\n * called when player.src gets called, handle a new source\n *\n * @param {Object} src the source object to handle\n */\n ;\n\n _proto.src = function src(_src, type) {\n var _this3 = this; // do nothing if the src is falsey\n\n\n if (!_src) {\n return;\n }\n\n this.setOptions_(); // add master playlist controller options\n\n this.options_.src = expandDataUri(this.source_.src);\n this.options_.tech = this.tech_;\n this.options_.externVhs = Vhs;\n this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update the tech\n\n this.options_.seekTo = function (time) {\n _this3.tech_.setCurrentTime(time);\n };\n\n if (this.options_.smoothQualityChange) {\n videojs.log.warn('smoothQualityChange is deprecated and will be removed in the next major version');\n }\n\n this.masterPlaylistController_ = new MasterPlaylistController(this.options_);\n var playbackWatcherOptions = videojs.mergeOptions({\n liveRangeSafeTimeDelta: SAFE_TIME_DELTA\n }, this.options_, {\n seekable: function seekable() {\n return _this3.seekable();\n },\n media: function media() {\n return _this3.masterPlaylistController_.media();\n },\n masterPlaylistController: this.masterPlaylistController_\n });\n this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions);\n this.masterPlaylistController_.on('error', function () {\n var player = videojs.players[_this3.tech_.options_.playerId];\n var error = _this3.masterPlaylistController_.error;\n\n if (typeof error === 'object' && !error.code) {\n error.code = 3;\n } else if (typeof error === 'string') {\n error = {\n message: error,\n code: 3\n };\n }\n\n player.error(error);\n });\n var defaultSelector = this.options_.experimentalBufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards\n // compatibility with < v2\n\n this.masterPlaylistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this);\n this.masterPlaylistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2\n\n this.playlists = this.masterPlaylistController_.masterPlaylistLoader_;\n this.mediaSource = this.masterPlaylistController_.mediaSource; // Proxy assignment of some properties to the master playlist\n // controller. Using a custom property for backwards compatibility\n // with < v2\n\n Object.defineProperties(this, {\n selectPlaylist: {\n get: function get() {\n return this.masterPlaylistController_.selectPlaylist;\n },\n set: function set(selectPlaylist) {\n this.masterPlaylistController_.selectPlaylist = selectPlaylist.bind(this);\n }\n },\n throughput: {\n get: function get() {\n return this.masterPlaylistController_.mainSegmentLoader_.throughput.rate;\n },\n set: function set(throughput) {\n this.masterPlaylistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value\n // for the cumulative average\n\n this.masterPlaylistController_.mainSegmentLoader_.throughput.count = 1;\n }\n },\n bandwidth: {\n get: function get() {\n var playerBandwidthEst = this.masterPlaylistController_.mainSegmentLoader_.bandwidth;\n var networkInformation = window$1.navigator.connection || window$1.navigator.mozConnection || window$1.navigator.webkitConnection;\n var tenMbpsAsBitsPerSecond = 10e6;\n\n if (this.options_.useNetworkInformationApi && networkInformation) {\n // downlink returns Mbps\n // https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink\n var networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player\n // estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that\n // high quality streams are not filtered out.\n\n if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) {\n playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec);\n } else {\n playerBandwidthEst = networkInfoBandwidthEstBitsPerSec;\n }\n }\n\n return playerBandwidthEst;\n },\n set: function set(bandwidth) {\n this.masterPlaylistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter\n // `count` is set to zero that current value of `rate` isn't included\n // in the cumulative average\n\n this.masterPlaylistController_.mainSegmentLoader_.throughput = {\n rate: 0,\n count: 0\n };\n }\n },\n\n /**\n * `systemBandwidth` is a combination of two serial processes bit-rates. The first\n * is the network bitrate provided by `bandwidth` and the second is the bitrate of\n * the entire process after that - decryption, transmuxing, and appending - provided\n * by `throughput`.\n *\n * Since the two process are serial, the overall system bandwidth is given by:\n * sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)\n */\n systemBandwidth: {\n get: function get() {\n var invBandwidth = 1 / (this.bandwidth || 1);\n var invThroughput;\n\n if (this.throughput > 0) {\n invThroughput = 1 / this.throughput;\n } else {\n invThroughput = 0;\n }\n\n var systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));\n return systemBitrate;\n },\n set: function set() {\n videojs.log.error('The \"systemBandwidth\" property is read-only');\n }\n }\n });\n\n if (this.options_.bandwidth) {\n this.bandwidth = this.options_.bandwidth;\n }\n\n if (this.options_.throughput) {\n this.throughput = this.options_.throughput;\n }\n\n Object.defineProperties(this.stats, {\n bandwidth: {\n get: function get() {\n return _this3.bandwidth || 0;\n },\n enumerable: true\n },\n mediaRequests: {\n get: function get() {\n return _this3.masterPlaylistController_.mediaRequests_() || 0;\n },\n enumerable: true\n },\n mediaRequestsAborted: {\n get: function get() {\n return _this3.masterPlaylistController_.mediaRequestsAborted_() || 0;\n },\n enumerable: true\n },\n mediaRequestsTimedout: {\n get: function get() {\n return _this3.masterPlaylistController_.mediaRequestsTimedout_() || 0;\n },\n enumerable: true\n },\n mediaRequestsErrored: {\n get: function get() {\n return _this3.masterPlaylistController_.mediaRequestsErrored_() || 0;\n },\n enumerable: true\n },\n mediaTransferDuration: {\n get: function get() {\n return _this3.masterPlaylistController_.mediaTransferDuration_() || 0;\n },\n enumerable: true\n },\n mediaBytesTransferred: {\n get: function get() {\n return _this3.masterPlaylistController_.mediaBytesTransferred_() || 0;\n },\n enumerable: true\n },\n mediaSecondsLoaded: {\n get: function get() {\n return _this3.masterPlaylistController_.mediaSecondsLoaded_() || 0;\n },\n enumerable: true\n },\n mediaAppends: {\n get: function get() {\n return _this3.masterPlaylistController_.mediaAppends_() || 0;\n },\n enumerable: true\n },\n mainAppendsToLoadedData: {\n get: function get() {\n return _this3.masterPlaylistController_.mainAppendsToLoadedData_() || 0;\n },\n enumerable: true\n },\n audioAppendsToLoadedData: {\n get: function get() {\n return _this3.masterPlaylistController_.audioAppendsToLoadedData_() || 0;\n },\n enumerable: true\n },\n appendsToLoadedData: {\n get: function get() {\n return _this3.masterPlaylistController_.appendsToLoadedData_() || 0;\n },\n enumerable: true\n },\n timeToLoadedData: {\n get: function get() {\n return _this3.masterPlaylistController_.timeToLoadedData_() || 0;\n },\n enumerable: true\n },\n buffered: {\n get: function get() {\n return timeRangesToArray(_this3.tech_.buffered());\n },\n enumerable: true\n },\n currentTime: {\n get: function get() {\n return _this3.tech_.currentTime();\n },\n enumerable: true\n },\n currentSource: {\n get: function get() {\n return _this3.tech_.currentSource_;\n },\n enumerable: true\n },\n currentTech: {\n get: function get() {\n return _this3.tech_.name_;\n },\n enumerable: true\n },\n duration: {\n get: function get() {\n return _this3.tech_.duration();\n },\n enumerable: true\n },\n master: {\n get: function get() {\n return _this3.playlists.master;\n },\n enumerable: true\n },\n playerDimensions: {\n get: function get() {\n return _this3.tech_.currentDimensions();\n },\n enumerable: true\n },\n seekable: {\n get: function get() {\n return timeRangesToArray(_this3.tech_.seekable());\n },\n enumerable: true\n },\n timestamp: {\n get: function get() {\n return Date.now();\n },\n enumerable: true\n },\n videoPlaybackQuality: {\n get: function get() {\n return _this3.tech_.getVideoPlaybackQuality();\n },\n enumerable: true\n }\n });\n this.tech_.one('canplay', this.masterPlaylistController_.setupFirstPlay.bind(this.masterPlaylistController_));\n this.tech_.on('bandwidthupdate', function () {\n if (_this3.options_.useBandwidthFromLocalStorage) {\n updateVhsLocalStorage({\n bandwidth: _this3.bandwidth,\n throughput: Math.round(_this3.throughput)\n });\n }\n });\n this.masterPlaylistController_.on('selectedinitialmedia', function () {\n // Add the manual rendition mix-in to VhsHandler\n renditionSelectionMixin(_this3);\n });\n this.masterPlaylistController_.sourceUpdater_.on('createdsourcebuffers', function () {\n _this3.setupEme_();\n }); // the bandwidth of the primary segment loader is our best\n // estimate of overall bandwidth\n\n this.on(this.masterPlaylistController_, 'progress', function () {\n this.tech_.trigger('progress');\n }); // In the live case, we need to ignore the very first `seeking` event since\n // that will be the result of the seek-to-live behavior\n\n this.on(this.masterPlaylistController_, 'firstplay', function () {\n this.ignoreNextSeekingEvent_ = true;\n });\n this.setupQualityLevels_(); // do nothing if the tech has been disposed already\n // this can occur if someone sets the src in player.ready(), for instance\n\n if (!this.tech_.el()) {\n return;\n }\n\n this.mediaSourceUrl_ = window$1.URL.createObjectURL(this.masterPlaylistController_.mediaSource);\n this.tech_.src(this.mediaSourceUrl_);\n };\n\n _proto.createKeySessions_ = function createKeySessions_() {\n var _this4 = this;\n\n var audioPlaylistLoader = this.masterPlaylistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n this.logger_('waiting for EME key session creation');\n waitForKeySessionCreation({\n player: this.player_,\n sourceKeySystems: this.source_.keySystems,\n audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(),\n mainPlaylists: this.playlists.master.playlists\n }).then(function () {\n _this4.logger_('created EME key session');\n\n _this4.masterPlaylistController_.sourceUpdater_.initializedEme();\n })[\"catch\"](function (err) {\n _this4.logger_('error while creating EME key session', err);\n\n _this4.player_.error({\n message: 'Failed to initialize media keys for EME',\n code: 3\n });\n });\n };\n\n _proto.handleWaitingForKey_ = function handleWaitingForKey_() {\n // If waitingforkey is fired, it's possible that the data that's necessary to retrieve\n // the key is in the manifest. While this should've happened on initial source load, it\n // may happen again in live streams where the keys change, and the manifest info\n // reflects the update.\n //\n // Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's\n // already requested keys for, we don't have to worry about this generating extraneous\n // requests.\n this.logger_('waitingforkey fired, attempting to create any new key sessions');\n this.createKeySessions_();\n }\n /**\n * If necessary and EME is available, sets up EME options and waits for key session\n * creation.\n *\n * This function also updates the source updater so taht it can be used, as for some\n * browsers, EME must be configured before content is appended (if appending unencrypted\n * content before encrypted content).\n */\n ;\n\n _proto.setupEme_ = function setupEme_() {\n var _this5 = this;\n\n var audioPlaylistLoader = this.masterPlaylistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n var didSetupEmeOptions = setupEmeOptions({\n player: this.player_,\n sourceKeySystems: this.source_.keySystems,\n media: this.playlists.media(),\n audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()\n });\n this.player_.tech_.on('keystatuschange', function (e) {\n if (e.status !== 'output-restricted') {\n return;\n }\n\n var masterPlaylist = _this5.masterPlaylistController_.master();\n\n if (!masterPlaylist || !masterPlaylist.playlists) {\n return;\n }\n\n var excludedHDPlaylists = []; // Assume all HD streams are unplayable and exclude them from ABR selection\n\n masterPlaylist.playlists.forEach(function (playlist) {\n if (playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height >= 720) {\n if (!playlist.excludeUntil || playlist.excludeUntil < Infinity) {\n playlist.excludeUntil = Infinity;\n excludedHDPlaylists.push(playlist);\n }\n }\n });\n\n if (excludedHDPlaylists.length) {\n var _videojs$log;\n\n (_videojs$log = videojs.log).warn.apply(_videojs$log, ['DRM keystatus changed to \"output-restricted.\" Removing the following HD playlists ' + 'that will most likely fail to play and clearing the buffer. ' + 'This may be due to HDCP restrictions on the stream and the capabilities of the current device.'].concat(excludedHDPlaylists)); // Clear the buffer before switching playlists, since it may already contain unplayable segments\n\n\n _this5.masterPlaylistController_.fastQualityChange_();\n }\n });\n this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);\n this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_); // In IE11 this is too early to initialize media keys, and IE11 does not support\n // promises.\n\n if (videojs.browser.IE_VERSION === 11 || !didSetupEmeOptions) {\n // If EME options were not set up, we've done all we could to initialize EME.\n this.masterPlaylistController_.sourceUpdater_.initializedEme();\n return;\n }\n\n this.createKeySessions_();\n }\n /**\n * Initializes the quality levels and sets listeners to update them.\n *\n * @method setupQualityLevels_\n * @private\n */\n ;\n\n _proto.setupQualityLevels_ = function setupQualityLevels_() {\n var _this6 = this;\n\n var player = videojs.players[this.tech_.options_.playerId]; // if there isn't a player or there isn't a qualityLevels plugin\n // or qualityLevels_ listeners have already been setup, do nothing.\n\n if (!player || !player.qualityLevels || this.qualityLevels_) {\n return;\n }\n\n this.qualityLevels_ = player.qualityLevels();\n this.masterPlaylistController_.on('selectedinitialmedia', function () {\n handleVhsLoadedMetadata(_this6.qualityLevels_, _this6);\n });\n this.playlists.on('mediachange', function () {\n handleVhsMediaChange(_this6.qualityLevels_, _this6.playlists);\n });\n }\n /**\n * return the version\n */\n ;\n\n VhsHandler.version = function version$5() {\n return {\n '@videojs/http-streaming': version$4,\n 'mux.js': version$3,\n 'mpd-parser': version$2,\n 'm3u8-parser': version$1,\n 'aes-decrypter': version\n };\n }\n /**\n * return the version\n */\n ;\n\n _proto.version = function version() {\n return this.constructor.version();\n };\n\n _proto.canChangeType = function canChangeType() {\n return SourceUpdater.canChangeType();\n }\n /**\n * Begin playing the video.\n */\n ;\n\n _proto.play = function play() {\n this.masterPlaylistController_.play();\n }\n /**\n * a wrapper around the function in MasterPlaylistController\n */\n ;\n\n _proto.setCurrentTime = function setCurrentTime(currentTime) {\n this.masterPlaylistController_.setCurrentTime(currentTime);\n }\n /**\n * a wrapper around the function in MasterPlaylistController\n */\n ;\n\n _proto.duration = function duration() {\n return this.masterPlaylistController_.duration();\n }\n /**\n * a wrapper around the function in MasterPlaylistController\n */\n ;\n\n _proto.seekable = function seekable() {\n return this.masterPlaylistController_.seekable();\n }\n /**\n * Abort all outstanding work and cleanup.\n */\n ;\n\n _proto.dispose = function dispose() {\n if (this.playbackWatcher_) {\n this.playbackWatcher_.dispose();\n }\n\n if (this.masterPlaylistController_) {\n this.masterPlaylistController_.dispose();\n }\n\n if (this.qualityLevels_) {\n this.qualityLevels_.dispose();\n }\n\n if (this.player_) {\n delete this.player_.vhs;\n delete this.player_.dash;\n delete this.player_.hls;\n }\n\n if (this.tech_ && this.tech_.vhs) {\n delete this.tech_.vhs;\n } // don't check this.tech_.hls as it will log a deprecated warning\n\n\n if (this.tech_) {\n delete this.tech_.hls;\n }\n\n if (this.mediaSourceUrl_ && window$1.URL.revokeObjectURL) {\n window$1.URL.revokeObjectURL(this.mediaSourceUrl_);\n this.mediaSourceUrl_ = null;\n }\n\n if (this.tech_) {\n this.tech_.off('waitingforkey', this.handleWaitingForKey_);\n }\n\n _Component.prototype.dispose.call(this);\n };\n\n _proto.convertToProgramTime = function convertToProgramTime(time, callback) {\n return getProgramTime({\n playlist: this.masterPlaylistController_.media(),\n time: time,\n callback: callback\n });\n } // the player must be playing before calling this\n ;\n\n _proto.seekToProgramTime = function seekToProgramTime$1(programTime, callback, pauseAfterSeek, retryCount) {\n if (pauseAfterSeek === void 0) {\n pauseAfterSeek = true;\n }\n\n if (retryCount === void 0) {\n retryCount = 2;\n }\n\n return seekToProgramTime({\n programTime: programTime,\n playlist: this.masterPlaylistController_.media(),\n retryCount: retryCount,\n pauseAfterSeek: pauseAfterSeek,\n seekTo: this.options_.seekTo,\n tech: this.options_.tech,\n callback: callback\n });\n };\n\n return VhsHandler;\n}(Component);\n/**\n * The Source Handler object, which informs video.js what additional\n * MIME types are supported and sets up playback. It is registered\n * automatically to the appropriate tech based on the capabilities of\n * the browser it is running in. It is not necessary to use or modify\n * this object in normal usage.\n */\n\n\nvar VhsSourceHandler = {\n name: 'videojs-http-streaming',\n VERSION: version$4,\n canHandleSource: function canHandleSource(srcObj, options) {\n if (options === void 0) {\n options = {};\n }\n\n var localOptions = videojs.mergeOptions(videojs.options, options);\n return VhsSourceHandler.canPlayType(srcObj.type, localOptions);\n },\n handleSource: function handleSource(source, tech, options) {\n if (options === void 0) {\n options = {};\n }\n\n var localOptions = videojs.mergeOptions(videojs.options, options);\n tech.vhs = new VhsHandler(source, tech, localOptions);\n\n if (!videojs.hasOwnProperty('hls')) {\n Object.defineProperty(tech, 'hls', {\n get: function get() {\n videojs.log.warn('player.tech().hls is deprecated. Use player.tech().vhs instead.');\n return tech.vhs;\n },\n configurable: true\n });\n }\n\n tech.vhs.xhr = xhrFactory();\n tech.vhs.src(source.src, source.type);\n return tech.vhs;\n },\n canPlayType: function canPlayType(type, options) {\n var simpleType = simpleTypeFromSourceType(type);\n\n if (!simpleType) {\n return '';\n }\n\n var overrideNative = VhsSourceHandler.getOverrideNative(options);\n var supportsTypeNatively = Vhs.supportsTypeNatively(simpleType);\n var canUseMsePlayback = !supportsTypeNatively || overrideNative;\n return canUseMsePlayback ? 'maybe' : '';\n },\n getOverrideNative: function getOverrideNative(options) {\n if (options === void 0) {\n options = {};\n }\n\n var _options = options,\n _options$vhs = _options.vhs,\n vhs = _options$vhs === void 0 ? {} : _options$vhs,\n _options$hls = _options.hls,\n hls = _options$hls === void 0 ? {} : _options$hls;\n var defaultOverrideNative = !(videojs.browser.IS_ANY_SAFARI || videojs.browser.IS_IOS);\n var _vhs$overrideNative = vhs.overrideNative,\n overrideNative = _vhs$overrideNative === void 0 ? defaultOverrideNative : _vhs$overrideNative;\n var _hls$overrideNative = hls.overrideNative,\n legacyOverrideNative = _hls$overrideNative === void 0 ? false : _hls$overrideNative;\n return legacyOverrideNative || overrideNative;\n }\n};\n/**\n * Check to see if the native MediaSource object exists and supports\n * an MP4 container with both H.264 video and AAC-LC audio.\n *\n * @return {boolean} if native media sources are supported\n */\n\nvar supportsNativeMediaSources = function supportsNativeMediaSources() {\n return browserSupportsCodec('avc1.4d400d,mp4a.40.2');\n}; // register source handlers with the appropriate techs\n\n\nif (supportsNativeMediaSources()) {\n videojs.getTech('Html5').registerSourceHandler(VhsSourceHandler, 0);\n}\n\nvideojs.VhsHandler = VhsHandler;\nObject.defineProperty(videojs, 'HlsHandler', {\n get: function get() {\n videojs.log.warn('videojs.HlsHandler is deprecated. Use videojs.VhsHandler instead.');\n return VhsHandler;\n },\n configurable: true\n});\nvideojs.VhsSourceHandler = VhsSourceHandler;\nObject.defineProperty(videojs, 'HlsSourceHandler', {\n get: function get() {\n videojs.log.warn('videojs.HlsSourceHandler is deprecated. ' + 'Use videojs.VhsSourceHandler instead.');\n return VhsSourceHandler;\n },\n configurable: true\n});\nvideojs.Vhs = Vhs;\nObject.defineProperty(videojs, 'Hls', {\n get: function get() {\n videojs.log.warn('videojs.Hls is deprecated. Use videojs.Vhs instead.');\n return Vhs;\n },\n configurable: true\n});\n\nif (!videojs.use) {\n videojs.registerComponent('Hls', Vhs);\n videojs.registerComponent('Vhs', Vhs);\n}\n\nvideojs.options.vhs = videojs.options.vhs || {};\nvideojs.options.hls = videojs.options.hls || {};\n\nif (!videojs.getPlugin || !videojs.getPlugin('reloadSourceOnError')) {\n var registerPlugin = videojs.registerPlugin || videojs.plugin;\n registerPlugin('reloadSourceOnError', reloadSourceOnError);\n}\n\nexport default videojs;\n","/*! @name videojs-seek-buttons @version 3.0.1 @license Apache-2.0 */\n(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('video.js')) :\n typeof define === 'function' && define.amd ? define(['video.js'], factory) :\n (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.videojsSeekButtons = factory(global.videojs));\n}(this, (function (videojs) { 'use strict';\n\n function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }\n\n var videojs__default = /*#__PURE__*/_interopDefaultLegacy(videojs);\n\n function _setPrototypeOf(o, p) {\n _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {\n o.__proto__ = p;\n return o;\n };\n\n return _setPrototypeOf(o, p);\n }\n\n function _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n _setPrototypeOf(subClass, superClass);\n }\n\n var version = \"3.0.1\";\n\n var Button = videojs__default['default'].getComponent('Button'); // Default options for the plugin.\n\n var defaults = {\n forwardIndex: 1,\n backIndex: 1\n };\n /**\n * Set up buttons when the player is ready.\n *\n * @function onPlayerReady\n * @param {Player} player\n * A Video.js player object.\n *\n * @param {Object} [options={}]\n * A plain object containing options for the plugin.\n */\n\n var onPlayerReady = function onPlayerReady(player, options) {\n player.addClass('vjs-seek-buttons');\n\n if (options.forward && options.forward > 0) {\n player.controlBar.seekForward = player.controlBar.addChild('seekButton', {\n direction: 'forward',\n seconds: options.forward\n }, options.forwardIndex);\n }\n\n if (options.back && options.back > 0) {\n player.controlBar.seekBack = player.controlBar.addChild('seekButton', {\n direction: 'back',\n seconds: options.back\n }, options.backIndex);\n }\n };\n /**\n * Plugin init if ready or on ready\n *\n * @function seekButtons\n * @param {Object} [options={}]\n * An object of options left to the plugin author to define.\n */\n\n\n var seekButtons = function seekButtons(options) {\n var _this = this;\n\n this.ready(function () {\n onPlayerReady(_this, videojs__default['default'].mergeOptions(defaults, options));\n });\n }; // Include the version number.\n\n\n seekButtons.VERSION = version;\n /**\n * Button to seek forward/back\n *\n * @extends Button\n * @class SeekButton\n */\n\n var SeekButton = /*#__PURE__*/function (_Button) {\n _inheritsLoose(SeekButton, _Button);\n\n /**\n * Constructor for class\n *\n * @param {Player|Object} player The player\n * @param {Object=} options Button options\n * @param {string} options.direction back or forward\n * @param {Int} options.seconds number of seconds to seek\n */\n function SeekButton(player, options) {\n var _this2;\n\n _this2 = _Button.call(this, player, options) || this;\n\n if (_this2.options_.direction === 'forward') {\n _this2.controlText(_this2.localize('Seek forward {{seconds}} seconds').replace('{{seconds}}', _this2.options_.seconds));\n } else if (_this2.options_.direction === 'back') {\n _this2.controlText(_this2.localize('Seek back {{seconds}} seconds').replace('{{seconds}}', _this2.options_.seconds));\n }\n\n return _this2;\n }\n /**\n * Return button class names which include the seek amount.\n *\n * @return {string} css cass string\n */\n\n\n var _proto = SeekButton.prototype;\n\n _proto.buildCSSClass = function buildCSSClass() {\n /* Each button will have the classes:\n `vjs-seek-button`\n `skip-forward` or `skip-back`\n `skip-n` where `n` is the number of seconds\n So you could have a generic icon for \"skip back\" and a more\n specific one for \"skip back 30 seconds\"\n */\n return \"vjs-seek-button skip-\" + this.options_.direction + \" \" + (\"skip-\" + this.options_.seconds + \" \" + _Button.prototype.buildCSSClass.call(this));\n }\n /**\n * Seek with the button's configured offset\n */\n ;\n\n _proto.handleClick = function handleClick() {\n var now = this.player_.currentTime();\n\n if (this.options_.direction === 'forward') {\n var duration = this.player_.duration();\n\n if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {\n duration = this.player_.liveTracker.seekableEnd();\n }\n\n this.player_.currentTime(Math.min(now + this.options_.seconds, duration));\n } else if (this.options_.direction === 'back') {\n this.player_.currentTime(Math.max(0, now - this.options_.seconds));\n }\n };\n\n return SeekButton;\n }(Button);\n\n videojs__default['default'].registerComponent('SeekButton', SeekButton); // Register the plugin with video.js.\n\n videojs__default['default'].registerPlugin('seekButtons', seekButtons);\n\n return seekButtons;\n\n})));\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n// Default exports for Node. Export the extended versions of VTTCue and\n// VTTRegion in Node since we likely want the capability to convert back and\n// forth between JSON. If we don't then it's not that big of a deal since we're\n// off browser.\n\nvar window = require('global/window');\n\nvar vttjs = module.exports = {\n WebVTT: require(\"./vtt.js\"),\n VTTCue: require(\"./vttcue.js\"),\n VTTRegion: require(\"./vttregion.js\")\n};\n\nwindow.vttjs = vttjs;\nwindow.WebVTT = vttjs.WebVTT;\n\nvar cueShim = vttjs.VTTCue;\nvar regionShim = vttjs.VTTRegion;\nvar nativeVTTCue = window.VTTCue;\nvar nativeVTTRegion = window.VTTRegion;\n\nvttjs.shim = function() {\n window.VTTCue = cueShim;\n window.VTTRegion = regionShim;\n};\n\nvttjs.restore = function() {\n window.VTTCue = nativeVTTCue;\n window.VTTRegion = nativeVTTRegion;\n};\n\nif (!window.VTTCue) {\n vttjs.shim();\n}\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */\n/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */\nvar document = require('global/document');\n\nvar _objCreate = Object.create || (function() {\n function F() {}\n return function(o) {\n if (arguments.length !== 1) {\n throw new Error('Object.create shim only accepts one parameter.');\n }\n F.prototype = o;\n return new F();\n };\n})();\n\n// Creates a new ParserError object from an errorData object. The errorData\n// object should have default code and message properties. The default message\n// property can be overriden by passing in a message parameter.\n// See ParsingError.Errors below for acceptable errors.\nfunction ParsingError(errorData, message) {\n this.name = \"ParsingError\";\n this.code = errorData.code;\n this.message = message || errorData.message;\n}\nParsingError.prototype = _objCreate(Error.prototype);\nParsingError.prototype.constructor = ParsingError;\n\n// ParsingError metadata for acceptable ParsingErrors.\nParsingError.Errors = {\n BadSignature: {\n code: 0,\n message: \"Malformed WebVTT signature.\"\n },\n BadTimeStamp: {\n code: 1,\n message: \"Malformed time stamp.\"\n }\n};\n\n// Try to parse input as a time stamp.\nfunction parseTimeStamp(input) {\n\n function computeSeconds(h, m, s, f) {\n return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;\n }\n\n var m = input.match(/^(\\d+):(\\d{1,2})(:\\d{1,2})?\\.(\\d{3})/);\n if (!m) {\n return null;\n }\n\n if (m[3]) {\n // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]\n return computeSeconds(m[1], m[2], m[3].replace(\":\", \"\"), m[4]);\n } else if (m[1] > 59) {\n // Timestamp takes the form of [hours]:[minutes].[milliseconds]\n // First position is hours as it's over 59.\n return computeSeconds(m[1], m[2], 0, m[4]);\n } else {\n // Timestamp takes the form of [minutes]:[seconds].[milliseconds]\n return computeSeconds(0, m[1], m[2], m[4]);\n }\n}\n\n// A settings object holds key/value pairs and will ignore anything but the first\n// assignment to a specific key.\nfunction Settings() {\n this.values = _objCreate(null);\n}\n\nSettings.prototype = {\n // Only accept the first assignment to any key.\n set: function(k, v) {\n if (!this.get(k) && v !== \"\") {\n this.values[k] = v;\n }\n },\n // Return the value for a key, or a default value.\n // If 'defaultKey' is passed then 'dflt' is assumed to be an object with\n // a number of possible default values as properties where 'defaultKey' is\n // the key of the property that will be chosen; otherwise it's assumed to be\n // a single value.\n get: function(k, dflt, defaultKey) {\n if (defaultKey) {\n return this.has(k) ? this.values[k] : dflt[defaultKey];\n }\n return this.has(k) ? this.values[k] : dflt;\n },\n // Check whether we have a value for a key.\n has: function(k) {\n return k in this.values;\n },\n // Accept a setting if its one of the given alternatives.\n alt: function(k, v, a) {\n for (var n = 0; n < a.length; ++n) {\n if (v === a[n]) {\n this.set(k, v);\n break;\n }\n }\n },\n // Accept a setting if its a valid (signed) integer.\n integer: function(k, v) {\n if (/^-?\\d+$/.test(v)) { // integer\n this.set(k, parseInt(v, 10));\n }\n },\n // Accept a setting if its a valid percentage.\n percent: function(k, v) {\n var m;\n if ((m = v.match(/^([\\d]{1,3})(\\.[\\d]*)?%$/))) {\n v = parseFloat(v);\n if (v >= 0 && v <= 100) {\n this.set(k, v);\n return true;\n }\n }\n return false;\n }\n};\n\n// Helper function to parse input into groups separated by 'groupDelim', and\n// interprete each group as a key/value pair separated by 'keyValueDelim'.\nfunction parseOptions(input, callback, keyValueDelim, groupDelim) {\n var groups = groupDelim ? input.split(groupDelim) : [input];\n for (var i in groups) {\n if (typeof groups[i] !== \"string\") {\n continue;\n }\n var kv = groups[i].split(keyValueDelim);\n if (kv.length !== 2) {\n continue;\n }\n var k = kv[0].trim();\n var v = kv[1].trim();\n callback(k, v);\n }\n}\n\nfunction parseCue(input, cue, regionList) {\n // Remember the original input if we need to throw an error.\n var oInput = input;\n // 4.1 WebVTT timestamp\n function consumeTimeStamp() {\n var ts = parseTimeStamp(input);\n if (ts === null) {\n throw new ParsingError(ParsingError.Errors.BadTimeStamp,\n \"Malformed timestamp: \" + oInput);\n }\n // Remove time stamp from input.\n input = input.replace(/^[^\\sa-zA-Z-]+/, \"\");\n return ts;\n }\n\n // 4.4.2 WebVTT cue settings\n function consumeCueSettings(input, cue) {\n var settings = new Settings();\n\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"region\":\n // Find the last region we parsed with the same region id.\n for (var i = regionList.length - 1; i >= 0; i--) {\n if (regionList[i].id === v) {\n settings.set(k, regionList[i].region);\n break;\n }\n }\n break;\n case \"vertical\":\n settings.alt(k, v, [\"rl\", \"lr\"]);\n break;\n case \"line\":\n var vals = v.split(\",\"),\n vals0 = vals[0];\n settings.integer(k, vals0);\n settings.percent(k, vals0) ? settings.set(\"snapToLines\", false) : null;\n settings.alt(k, vals0, [\"auto\"]);\n if (vals.length === 2) {\n settings.alt(\"lineAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n }\n break;\n case \"position\":\n vals = v.split(\",\");\n settings.percent(k, vals[0]);\n if (vals.length === 2) {\n settings.alt(\"positionAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n }\n break;\n case \"size\":\n settings.percent(k, v);\n break;\n case \"align\":\n settings.alt(k, v, [\"start\", \"center\", \"end\", \"left\", \"right\"]);\n break;\n }\n }, /:/, /\\s/);\n\n // Apply default values for any missing fields.\n cue.region = settings.get(\"region\", null);\n cue.vertical = settings.get(\"vertical\", \"\");\n try {\n cue.line = settings.get(\"line\", \"auto\");\n } catch (e) {}\n cue.lineAlign = settings.get(\"lineAlign\", \"start\");\n cue.snapToLines = settings.get(\"snapToLines\", true);\n cue.size = settings.get(\"size\", 100);\n // Safari still uses the old middle value and won't accept center\n try {\n cue.align = settings.get(\"align\", \"center\");\n } catch (e) {\n cue.align = settings.get(\"align\", \"middle\");\n }\n try {\n cue.position = settings.get(\"position\", \"auto\");\n } catch (e) {\n cue.position = settings.get(\"position\", {\n start: 0,\n left: 0,\n center: 50,\n middle: 50,\n end: 100,\n right: 100\n }, cue.align);\n }\n\n\n cue.positionAlign = settings.get(\"positionAlign\", {\n start: \"start\",\n left: \"start\",\n center: \"center\",\n middle: \"center\",\n end: \"end\",\n right: \"end\"\n }, cue.align);\n }\n\n function skipWhitespace() {\n input = input.replace(/^\\s+/, \"\");\n }\n\n // 4.1 WebVTT cue timings.\n skipWhitespace();\n cue.startTime = consumeTimeStamp(); // (1) collect cue start time\n skipWhitespace();\n if (input.substr(0, 3) !== \"-->\") { // (3) next characters must match \"-->\"\n throw new ParsingError(ParsingError.Errors.BadTimeStamp,\n \"Malformed time stamp (time stamps must be separated by '-->'): \" +\n oInput);\n }\n input = input.substr(3);\n skipWhitespace();\n cue.endTime = consumeTimeStamp(); // (5) collect cue end time\n\n // 4.1 WebVTT cue settings list.\n skipWhitespace();\n consumeCueSettings(input, cue);\n}\n\n// When evaluating this file as part of a Webpack bundle for server\n// side rendering, `document` is an empty object.\nvar TEXTAREA_ELEMENT = document.createElement && document.createElement(\"textarea\");\n\nvar TAG_NAME = {\n c: \"span\",\n i: \"i\",\n b: \"b\",\n u: \"u\",\n ruby: \"ruby\",\n rt: \"rt\",\n v: \"span\",\n lang: \"span\"\n};\n\n// 5.1 default text color\n// 5.2 default text background color is equivalent to text color with bg_ prefix\nvar DEFAULT_COLOR_CLASS = {\n white: 'rgba(255,255,255,1)',\n lime: 'rgba(0,255,0,1)',\n cyan: 'rgba(0,255,255,1)',\n red: 'rgba(255,0,0,1)',\n yellow: 'rgba(255,255,0,1)',\n magenta: 'rgba(255,0,255,1)',\n blue: 'rgba(0,0,255,1)',\n black: 'rgba(0,0,0,1)'\n};\n\nvar TAG_ANNOTATION = {\n v: \"title\",\n lang: \"lang\"\n};\n\nvar NEEDS_PARENT = {\n rt: \"ruby\"\n};\n\n// Parse content into a document fragment.\nfunction parseContent(window, input) {\n function nextToken() {\n // Check for end-of-string.\n if (!input) {\n return null;\n }\n\n // Consume 'n' characters from the input.\n function consume(result) {\n input = input.substr(result.length);\n return result;\n }\n\n var m = input.match(/^([^<]*)(<[^>]*>?)?/);\n // If there is some text before the next tag, return it, otherwise return\n // the tag.\n return consume(m[1] ? m[1] : m[2]);\n }\n\n function unescape(s) {\n TEXTAREA_ELEMENT.innerHTML = s;\n s = TEXTAREA_ELEMENT.textContent;\n TEXTAREA_ELEMENT.textContent = \"\";\n return s;\n }\n\n function shouldAdd(current, element) {\n return !NEEDS_PARENT[element.localName] ||\n NEEDS_PARENT[element.localName] === current.localName;\n }\n\n // Create an element for this tag.\n function createElement(type, annotation) {\n var tagName = TAG_NAME[type];\n if (!tagName) {\n return null;\n }\n var element = window.document.createElement(tagName);\n var name = TAG_ANNOTATION[type];\n if (name && annotation) {\n element[name] = annotation.trim();\n }\n return element;\n }\n\n var rootDiv = window.document.createElement(\"div\"),\n current = rootDiv,\n t,\n tagStack = [];\n\n while ((t = nextToken()) !== null) {\n if (t[0] === '<') {\n if (t[1] === \"/\") {\n // If the closing tag matches, move back up to the parent node.\n if (tagStack.length &&\n tagStack[tagStack.length - 1] === t.substr(2).replace(\">\", \"\")) {\n tagStack.pop();\n current = current.parentNode;\n }\n // Otherwise just ignore the end tag.\n continue;\n }\n var ts = parseTimeStamp(t.substr(1, t.length - 2));\n var node;\n if (ts) {\n // Timestamps are lead nodes as well.\n node = window.document.createProcessingInstruction(\"timestamp\", ts);\n current.appendChild(node);\n continue;\n }\n var m = t.match(/^<([^.\\s/0-9>]+)(\\.[^\\s\\\\>]+)?([^>\\\\]+)?(\\\\?)>?$/);\n // If we can't parse the tag, skip to the next tag.\n if (!m) {\n continue;\n }\n // Try to construct an element, and ignore the tag if we couldn't.\n node = createElement(m[1], m[3]);\n if (!node) {\n continue;\n }\n // Determine if the tag should be added based on the context of where it\n // is placed in the cuetext.\n if (!shouldAdd(current, node)) {\n continue;\n }\n // Set the class list (as a list of classes, separated by space).\n if (m[2]) {\n var classes = m[2].split('.');\n\n classes.forEach(function(cl) {\n var bgColor = /^bg_/.test(cl);\n // slice out `bg_` if it's a background color\n var colorName = bgColor ? cl.slice(3) : cl;\n\n if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) {\n var propName = bgColor ? 'background-color' : 'color';\n var propValue = DEFAULT_COLOR_CLASS[colorName];\n\n node.style[propName] = propValue;\n }\n });\n\n node.className = classes.join(' ');\n }\n // Append the node to the current node, and enter the scope of the new\n // node.\n tagStack.push(m[1]);\n current.appendChild(node);\n current = node;\n continue;\n }\n\n // Text nodes are leaf nodes.\n current.appendChild(window.document.createTextNode(unescape(t)));\n }\n\n return rootDiv;\n}\n\n// This is a list of all the Unicode characters that have a strong\n// right-to-left category. What this means is that these characters are\n// written right-to-left for sure. It was generated by pulling all the strong\n// right-to-left characters out of the Unicode data table. That table can\n// found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt\nvar strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6],\n [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d],\n [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6],\n [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5],\n [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815],\n [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858],\n [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f],\n [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c],\n [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1],\n [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc],\n [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808],\n [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855],\n [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f],\n [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13],\n [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58],\n [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72],\n [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f],\n [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32],\n [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42],\n [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f],\n [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59],\n [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62],\n [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77],\n [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b],\n [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];\n\nfunction isStrongRTLChar(charCode) {\n for (var i = 0; i < strongRTLRanges.length; i++) {\n var currentRange = strongRTLRanges[i];\n if (charCode >= currentRange[0] && charCode <= currentRange[1]) {\n return true;\n }\n }\n\n return false;\n}\n\nfunction determineBidi(cueDiv) {\n var nodeStack = [],\n text = \"\",\n charCode;\n\n if (!cueDiv || !cueDiv.childNodes) {\n return \"ltr\";\n }\n\n function pushNodes(nodeStack, node) {\n for (var i = node.childNodes.length - 1; i >= 0; i--) {\n nodeStack.push(node.childNodes[i]);\n }\n }\n\n function nextTextNode(nodeStack) {\n if (!nodeStack || !nodeStack.length) {\n return null;\n }\n\n var node = nodeStack.pop(),\n text = node.textContent || node.innerText;\n if (text) {\n // TODO: This should match all unicode type B characters (paragraph\n // separator characters). See issue #115.\n var m = text.match(/^.*(\\n|\\r)/);\n if (m) {\n nodeStack.length = 0;\n return m[0];\n }\n return text;\n }\n if (node.tagName === \"ruby\") {\n return nextTextNode(nodeStack);\n }\n if (node.childNodes) {\n pushNodes(nodeStack, node);\n return nextTextNode(nodeStack);\n }\n }\n\n pushNodes(nodeStack, cueDiv);\n while ((text = nextTextNode(nodeStack))) {\n for (var i = 0; i < text.length; i++) {\n charCode = text.charCodeAt(i);\n if (isStrongRTLChar(charCode)) {\n return \"rtl\";\n }\n }\n }\n return \"ltr\";\n}\n\nfunction computeLinePos(cue) {\n if (typeof cue.line === \"number\" &&\n (cue.snapToLines || (cue.line >= 0 && cue.line <= 100))) {\n return cue.line;\n }\n if (!cue.track || !cue.track.textTrackList ||\n !cue.track.textTrackList.mediaElement) {\n return -1;\n }\n var track = cue.track,\n trackList = track.textTrackList,\n count = 0;\n for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {\n if (trackList[i].mode === \"showing\") {\n count++;\n }\n }\n return ++count * -1;\n}\n\nfunction StyleBox() {\n}\n\n// Apply styles to a div. If there is no div passed then it defaults to the\n// div on 'this'.\nStyleBox.prototype.applyStyles = function(styles, div) {\n div = div || this.div;\n for (var prop in styles) {\n if (styles.hasOwnProperty(prop)) {\n div.style[prop] = styles[prop];\n }\n }\n};\n\nStyleBox.prototype.formatStyle = function(val, unit) {\n return val === 0 ? 0 : val + unit;\n};\n\n// Constructs the computed display state of the cue (a div). Places the div\n// into the overlay which should be a block level element (usually a div).\nfunction CueStyleBox(window, cue, styleOptions) {\n StyleBox.call(this);\n this.cue = cue;\n\n // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will\n // have inline positioning and will function as the cue background box.\n this.cueDiv = parseContent(window, cue.text);\n var styles = {\n color: \"rgba(255, 255, 255, 1)\",\n backgroundColor: \"rgba(0, 0, 0, 0.8)\",\n position: \"relative\",\n left: 0,\n right: 0,\n top: 0,\n bottom: 0,\n display: \"inline\",\n writingMode: cue.vertical === \"\" ? \"horizontal-tb\"\n : cue.vertical === \"lr\" ? \"vertical-lr\"\n : \"vertical-rl\",\n unicodeBidi: \"plaintext\"\n };\n\n this.applyStyles(styles, this.cueDiv);\n\n // Create an absolutely positioned div that will be used to position the cue\n // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS\n // mirrors of them except middle instead of center on Safari.\n this.div = window.document.createElement(\"div\");\n styles = {\n direction: determineBidi(this.cueDiv),\n writingMode: cue.vertical === \"\" ? \"horizontal-tb\"\n : cue.vertical === \"lr\" ? \"vertical-lr\"\n : \"vertical-rl\",\n unicodeBidi: \"plaintext\",\n textAlign: cue.align === \"middle\" ? \"center\" : cue.align,\n font: styleOptions.font,\n whiteSpace: \"pre-line\",\n position: \"absolute\"\n };\n\n this.applyStyles(styles);\n this.div.appendChild(this.cueDiv);\n\n // Calculate the distance from the reference edge of the viewport to the text\n // position of the cue box. The reference edge will be resolved later when\n // the box orientation styles are applied.\n var textPos = 0;\n switch (cue.positionAlign) {\n case \"start\":\n textPos = cue.position;\n break;\n case \"center\":\n textPos = cue.position - (cue.size / 2);\n break;\n case \"end\":\n textPos = cue.position - cue.size;\n break;\n }\n\n // Horizontal box orientation; textPos is the distance from the left edge of the\n // area to the left edge of the box and cue.size is the distance extending to\n // the right from there.\n if (cue.vertical === \"\") {\n this.applyStyles({\n left: this.formatStyle(textPos, \"%\"),\n width: this.formatStyle(cue.size, \"%\")\n });\n // Vertical box orientation; textPos is the distance from the top edge of the\n // area to the top edge of the box and cue.size is the height extending\n // downwards from there.\n } else {\n this.applyStyles({\n top: this.formatStyle(textPos, \"%\"),\n height: this.formatStyle(cue.size, \"%\")\n });\n }\n\n this.move = function(box) {\n this.applyStyles({\n top: this.formatStyle(box.top, \"px\"),\n bottom: this.formatStyle(box.bottom, \"px\"),\n left: this.formatStyle(box.left, \"px\"),\n right: this.formatStyle(box.right, \"px\"),\n height: this.formatStyle(box.height, \"px\"),\n width: this.formatStyle(box.width, \"px\")\n });\n };\n}\nCueStyleBox.prototype = _objCreate(StyleBox.prototype);\nCueStyleBox.prototype.constructor = CueStyleBox;\n\n// Represents the co-ordinates of an Element in a way that we can easily\n// compute things with such as if it overlaps or intersects with another Element.\n// Can initialize it with either a StyleBox or another BoxPosition.\nfunction BoxPosition(obj) {\n // Either a BoxPosition was passed in and we need to copy it, or a StyleBox\n // was passed in and we need to copy the results of 'getBoundingClientRect'\n // as the object returned is readonly. All co-ordinate values are in reference\n // to the viewport origin (top left).\n var lh, height, width, top;\n if (obj.div) {\n height = obj.div.offsetHeight;\n width = obj.div.offsetWidth;\n top = obj.div.offsetTop;\n\n var rects = (rects = obj.div.childNodes) && (rects = rects[0]) &&\n rects.getClientRects && rects.getClientRects();\n obj = obj.div.getBoundingClientRect();\n // In certain cases the outter div will be slightly larger then the sum of\n // the inner div's lines. This could be due to bold text, etc, on some platforms.\n // In this case we should get the average line height and use that. This will\n // result in the desired behaviour.\n lh = rects ? Math.max((rects[0] && rects[0].height) || 0, obj.height / rects.length)\n : 0;\n\n }\n this.left = obj.left;\n this.right = obj.right;\n this.top = obj.top || top;\n this.height = obj.height || height;\n this.bottom = obj.bottom || (top + (obj.height || height));\n this.width = obj.width || width;\n this.lineHeight = lh !== undefined ? lh : obj.lineHeight;\n}\n\n// Move the box along a particular axis. Optionally pass in an amount to move\n// the box. If no amount is passed then the default is the line height of the\n// box.\nBoxPosition.prototype.move = function(axis, toMove) {\n toMove = toMove !== undefined ? toMove : this.lineHeight;\n switch (axis) {\n case \"+x\":\n this.left += toMove;\n this.right += toMove;\n break;\n case \"-x\":\n this.left -= toMove;\n this.right -= toMove;\n break;\n case \"+y\":\n this.top += toMove;\n this.bottom += toMove;\n break;\n case \"-y\":\n this.top -= toMove;\n this.bottom -= toMove;\n break;\n }\n};\n\n// Check if this box overlaps another box, b2.\nBoxPosition.prototype.overlaps = function(b2) {\n return this.left < b2.right &&\n this.right > b2.left &&\n this.top < b2.bottom &&\n this.bottom > b2.top;\n};\n\n// Check if this box overlaps any other boxes in boxes.\nBoxPosition.prototype.overlapsAny = function(boxes) {\n for (var i = 0; i < boxes.length; i++) {\n if (this.overlaps(boxes[i])) {\n return true;\n }\n }\n return false;\n};\n\n// Check if this box is within another box.\nBoxPosition.prototype.within = function(container) {\n return this.top >= container.top &&\n this.bottom <= container.bottom &&\n this.left >= container.left &&\n this.right <= container.right;\n};\n\n// Check if this box is entirely within the container or it is overlapping\n// on the edge opposite of the axis direction passed. For example, if \"+x\" is\n// passed and the box is overlapping on the left edge of the container, then\n// return true.\nBoxPosition.prototype.overlapsOppositeAxis = function(container, axis) {\n switch (axis) {\n case \"+x\":\n return this.left < container.left;\n case \"-x\":\n return this.right > container.right;\n case \"+y\":\n return this.top < container.top;\n case \"-y\":\n return this.bottom > container.bottom;\n }\n};\n\n// Find the percentage of the area that this box is overlapping with another\n// box.\nBoxPosition.prototype.intersectPercentage = function(b2) {\n var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),\n y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),\n intersectArea = x * y;\n return intersectArea / (this.height * this.width);\n};\n\n// Convert the positions from this box to CSS compatible positions using\n// the reference container's positions. This has to be done because this\n// box's positions are in reference to the viewport origin, whereas, CSS\n// values are in referecne to their respective edges.\nBoxPosition.prototype.toCSSCompatValues = function(reference) {\n return {\n top: this.top - reference.top,\n bottom: reference.bottom - this.bottom,\n left: this.left - reference.left,\n right: reference.right - this.right,\n height: this.height,\n width: this.width\n };\n};\n\n// Get an object that represents the box's position without anything extra.\n// Can pass a StyleBox, HTMLElement, or another BoxPositon.\nBoxPosition.getSimpleBoxPosition = function(obj) {\n var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;\n var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;\n var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;\n\n obj = obj.div ? obj.div.getBoundingClientRect() :\n obj.tagName ? obj.getBoundingClientRect() : obj;\n var ret = {\n left: obj.left,\n right: obj.right,\n top: obj.top || top,\n height: obj.height || height,\n bottom: obj.bottom || (top + (obj.height || height)),\n width: obj.width || width\n };\n return ret;\n};\n\n// Move a StyleBox to its specified, or next best, position. The containerBox\n// is the box that contains the StyleBox, such as a div. boxPositions are\n// a list of other boxes that the styleBox can't overlap with.\nfunction moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {\n\n // Find the best position for a cue box, b, on the video. The axis parameter\n // is a list of axis, the order of which, it will move the box along. For example:\n // Passing [\"+x\", \"-x\"] will move the box first along the x axis in the positive\n // direction. If it doesn't find a good position for it there it will then move\n // it along the x axis in the negative direction.\n function findBestPosition(b, axis) {\n var bestPosition,\n specifiedPosition = new BoxPosition(b),\n percentage = 1; // Highest possible so the first thing we get is better.\n\n for (var i = 0; i < axis.length; i++) {\n while (b.overlapsOppositeAxis(containerBox, axis[i]) ||\n (b.within(containerBox) && b.overlapsAny(boxPositions))) {\n b.move(axis[i]);\n }\n // We found a spot where we aren't overlapping anything. This is our\n // best position.\n if (b.within(containerBox)) {\n return b;\n }\n var p = b.intersectPercentage(containerBox);\n // If we're outside the container box less then we were on our last try\n // then remember this position as the best position.\n if (percentage > p) {\n bestPosition = new BoxPosition(b);\n percentage = p;\n }\n // Reset the box position to the specified position.\n b = new BoxPosition(specifiedPosition);\n }\n return bestPosition || specifiedPosition;\n }\n\n var boxPosition = new BoxPosition(styleBox),\n cue = styleBox.cue,\n linePos = computeLinePos(cue),\n axis = [];\n\n // If we have a line number to align the cue to.\n if (cue.snapToLines) {\n var size;\n switch (cue.vertical) {\n case \"\":\n axis = [ \"+y\", \"-y\" ];\n size = \"height\";\n break;\n case \"rl\":\n axis = [ \"+x\", \"-x\" ];\n size = \"width\";\n break;\n case \"lr\":\n axis = [ \"-x\", \"+x\" ];\n size = \"width\";\n break;\n }\n\n var step = boxPosition.lineHeight,\n position = step * Math.round(linePos),\n maxPosition = containerBox[size] + step,\n initialAxis = axis[0];\n\n // If the specified intial position is greater then the max position then\n // clamp the box to the amount of steps it would take for the box to\n // reach the max position.\n if (Math.abs(position) > maxPosition) {\n position = position < 0 ? -1 : 1;\n position *= Math.ceil(maxPosition / step) * step;\n }\n\n // If computed line position returns negative then line numbers are\n // relative to the bottom of the video instead of the top. Therefore, we\n // need to increase our initial position by the length or width of the\n // video, depending on the writing direction, and reverse our axis directions.\n if (linePos < 0) {\n position += cue.vertical === \"\" ? containerBox.height : containerBox.width;\n axis = axis.reverse();\n }\n\n // Move the box to the specified position. This may not be its best\n // position.\n boxPosition.move(initialAxis, position);\n\n } else {\n // If we have a percentage line value for the cue.\n var calculatedPercentage = (boxPosition.lineHeight / containerBox.height) * 100;\n\n switch (cue.lineAlign) {\n case \"center\":\n linePos -= (calculatedPercentage / 2);\n break;\n case \"end\":\n linePos -= calculatedPercentage;\n break;\n }\n\n // Apply initial line position to the cue box.\n switch (cue.vertical) {\n case \"\":\n styleBox.applyStyles({\n top: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n case \"rl\":\n styleBox.applyStyles({\n left: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n case \"lr\":\n styleBox.applyStyles({\n right: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n }\n\n axis = [ \"+y\", \"-x\", \"+x\", \"-y\" ];\n\n // Get the box position again after we've applied the specified positioning\n // to it.\n boxPosition = new BoxPosition(styleBox);\n }\n\n var bestPosition = findBestPosition(boxPosition, axis);\n styleBox.move(bestPosition.toCSSCompatValues(containerBox));\n}\n\nfunction WebVTT() {\n // Nothing\n}\n\n// Helper to allow strings to be decoded instead of the default binary utf8 data.\nWebVTT.StringDecoder = function() {\n return {\n decode: function(data) {\n if (!data) {\n return \"\";\n }\n if (typeof data !== \"string\") {\n throw new Error(\"Error - expected string data.\");\n }\n return decodeURIComponent(encodeURIComponent(data));\n }\n };\n};\n\nWebVTT.convertCueToDOMTree = function(window, cuetext) {\n if (!window || !cuetext) {\n return null;\n }\n return parseContent(window, cuetext);\n};\n\nvar FONT_SIZE_PERCENT = 0.05;\nvar FONT_STYLE = \"sans-serif\";\nvar CUE_BACKGROUND_PADDING = \"1.5%\";\n\n// Runs the processing model over the cues and regions passed to it.\n// @param overlay A block level element (usually a div) that the computed cues\n// and regions will be placed into.\nWebVTT.processCues = function(window, cues, overlay) {\n if (!window || !cues || !overlay) {\n return null;\n }\n\n // Remove all previous children.\n while (overlay.firstChild) {\n overlay.removeChild(overlay.firstChild);\n }\n\n var paddedOverlay = window.document.createElement(\"div\");\n paddedOverlay.style.position = \"absolute\";\n paddedOverlay.style.left = \"0\";\n paddedOverlay.style.right = \"0\";\n paddedOverlay.style.top = \"0\";\n paddedOverlay.style.bottom = \"0\";\n paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;\n overlay.appendChild(paddedOverlay);\n\n // Determine if we need to compute the display states of the cues. This could\n // be the case if a cue's state has been changed since the last computation or\n // if it has not been computed yet.\n function shouldCompute(cues) {\n for (var i = 0; i < cues.length; i++) {\n if (cues[i].hasBeenReset || !cues[i].displayState) {\n return true;\n }\n }\n return false;\n }\n\n // We don't need to recompute the cues' display states. Just reuse them.\n if (!shouldCompute(cues)) {\n for (var i = 0; i < cues.length; i++) {\n paddedOverlay.appendChild(cues[i].displayState);\n }\n return;\n }\n\n var boxPositions = [],\n containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),\n fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;\n var styleOptions = {\n font: fontSize + \"px \" + FONT_STYLE\n };\n\n (function() {\n var styleBox, cue;\n\n for (var i = 0; i < cues.length; i++) {\n cue = cues[i];\n\n // Compute the intial position and styles of the cue div.\n styleBox = new CueStyleBox(window, cue, styleOptions);\n paddedOverlay.appendChild(styleBox.div);\n\n // Move the cue div to it's correct line position.\n moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);\n\n // Remember the computed div so that we don't have to recompute it later\n // if we don't have too.\n cue.displayState = styleBox.div;\n\n boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));\n }\n })();\n};\n\nWebVTT.Parser = function(window, vttjs, decoder) {\n if (!decoder) {\n decoder = vttjs;\n vttjs = {};\n }\n if (!vttjs) {\n vttjs = {};\n }\n\n this.window = window;\n this.vttjs = vttjs;\n this.state = \"INITIAL\";\n this.buffer = \"\";\n this.decoder = decoder || new TextDecoder(\"utf8\");\n this.regionList = [];\n};\n\nWebVTT.Parser.prototype = {\n // If the error is a ParsingError then report it to the consumer if\n // possible. If it's not a ParsingError then throw it like normal.\n reportOrThrowError: function(e) {\n if (e instanceof ParsingError) {\n this.onparsingerror && this.onparsingerror(e);\n } else {\n throw e;\n }\n },\n parse: function (data) {\n var self = this;\n\n // If there is no data then we won't decode it, but will just try to parse\n // whatever is in buffer already. This may occur in circumstances, for\n // example when flush() is called.\n if (data) {\n // Try to decode the data that we received.\n self.buffer += self.decoder.decode(data, {stream: true});\n }\n\n function collectNextLine() {\n var buffer = self.buffer;\n var pos = 0;\n while (pos < buffer.length && buffer[pos] !== '\\r' && buffer[pos] !== '\\n') {\n ++pos;\n }\n var line = buffer.substr(0, pos);\n // Advance the buffer early in case we fail below.\n if (buffer[pos] === '\\r') {\n ++pos;\n }\n if (buffer[pos] === '\\n') {\n ++pos;\n }\n self.buffer = buffer.substr(pos);\n return line;\n }\n\n // 3.4 WebVTT region and WebVTT region settings syntax\n function parseRegion(input) {\n var settings = new Settings();\n\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"id\":\n settings.set(k, v);\n break;\n case \"width\":\n settings.percent(k, v);\n break;\n case \"lines\":\n settings.integer(k, v);\n break;\n case \"regionanchor\":\n case \"viewportanchor\":\n var xy = v.split(',');\n if (xy.length !== 2) {\n break;\n }\n // We have to make sure both x and y parse, so use a temporary\n // settings object here.\n var anchor = new Settings();\n anchor.percent(\"x\", xy[0]);\n anchor.percent(\"y\", xy[1]);\n if (!anchor.has(\"x\") || !anchor.has(\"y\")) {\n break;\n }\n settings.set(k + \"X\", anchor.get(\"x\"));\n settings.set(k + \"Y\", anchor.get(\"y\"));\n break;\n case \"scroll\":\n settings.alt(k, v, [\"up\"]);\n break;\n }\n }, /=/, /\\s/);\n\n // Create the region, using default values for any values that were not\n // specified.\n if (settings.has(\"id\")) {\n var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();\n region.width = settings.get(\"width\", 100);\n region.lines = settings.get(\"lines\", 3);\n region.regionAnchorX = settings.get(\"regionanchorX\", 0);\n region.regionAnchorY = settings.get(\"regionanchorY\", 100);\n region.viewportAnchorX = settings.get(\"viewportanchorX\", 0);\n region.viewportAnchorY = settings.get(\"viewportanchorY\", 100);\n region.scroll = settings.get(\"scroll\", \"\");\n // Register the region.\n self.onregion && self.onregion(region);\n // Remember the VTTRegion for later in case we parse any VTTCues that\n // reference it.\n self.regionList.push({\n id: settings.get(\"id\"),\n region: region\n });\n }\n }\n\n // draft-pantos-http-live-streaming-20\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5\n // 3.5 WebVTT\n function parseTimestampMap(input) {\n var settings = new Settings();\n\n parseOptions(input, function(k, v) {\n switch(k) {\n case \"MPEGT\":\n settings.integer(k + 'S', v);\n break;\n case \"LOCA\":\n settings.set(k + 'L', parseTimeStamp(v));\n break;\n }\n }, /[^\\d]:/, /,/);\n\n self.ontimestampmap && self.ontimestampmap({\n \"MPEGTS\": settings.get(\"MPEGTS\"),\n \"LOCAL\": settings.get(\"LOCAL\")\n });\n }\n\n // 3.2 WebVTT metadata header syntax\n function parseHeader(input) {\n if (input.match(/X-TIMESTAMP-MAP/)) {\n // This line contains HLS X-TIMESTAMP-MAP metadata\n parseOptions(input, function(k, v) {\n switch(k) {\n case \"X-TIMESTAMP-MAP\":\n parseTimestampMap(v);\n break;\n }\n }, /=/);\n } else {\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"Region\":\n // 3.3 WebVTT region metadata header syntax\n parseRegion(v);\n break;\n }\n }, /:/);\n }\n\n }\n\n // 5.1 WebVTT file parsing.\n try {\n var line;\n if (self.state === \"INITIAL\") {\n // We can't start parsing until we have the first line.\n if (!/\\r\\n|\\n/.test(self.buffer)) {\n return this;\n }\n\n line = collectNextLine();\n\n var m = line.match(/^WEBVTT([ \\t].*)?$/);\n if (!m || !m[0]) {\n throw new ParsingError(ParsingError.Errors.BadSignature);\n }\n\n self.state = \"HEADER\";\n }\n\n var alreadyCollectedLine = false;\n while (self.buffer) {\n // We can't parse a line until we have the full line.\n if (!/\\r\\n|\\n/.test(self.buffer)) {\n return this;\n }\n\n if (!alreadyCollectedLine) {\n line = collectNextLine();\n } else {\n alreadyCollectedLine = false;\n }\n\n switch (self.state) {\n case \"HEADER\":\n // 13-18 - Allow a header (metadata) under the WEBVTT line.\n if (/:/.test(line)) {\n parseHeader(line);\n } else if (!line) {\n // An empty line terminates the header and starts the body (cues).\n self.state = \"ID\";\n }\n continue;\n case \"NOTE\":\n // Ignore NOTE blocks.\n if (!line) {\n self.state = \"ID\";\n }\n continue;\n case \"ID\":\n // Check for the start of NOTE blocks.\n if (/^NOTE($|[ \\t])/.test(line)) {\n self.state = \"NOTE\";\n break;\n }\n // 19-29 - Allow any number of line terminators, then initialize new cue values.\n if (!line) {\n continue;\n }\n self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, \"\");\n // Safari still uses the old middle value and won't accept center\n try {\n self.cue.align = \"center\";\n } catch (e) {\n self.cue.align = \"middle\";\n }\n self.state = \"CUE\";\n // 30-39 - Check if self line contains an optional identifier or timing data.\n if (line.indexOf(\"-->\") === -1) {\n self.cue.id = line;\n continue;\n }\n // Process line as start of a cue.\n /*falls through*/\n case \"CUE\":\n // 40 - Collect cue timings and settings.\n try {\n parseCue(line, self.cue, self.regionList);\n } catch (e) {\n self.reportOrThrowError(e);\n // In case of an error ignore rest of the cue.\n self.cue = null;\n self.state = \"BADCUE\";\n continue;\n }\n self.state = \"CUETEXT\";\n continue;\n case \"CUETEXT\":\n var hasSubstring = line.indexOf(\"-->\") !== -1;\n // 34 - If we have an empty line then report the cue.\n // 35 - If we have the special substring '-->' then report the cue,\n // but do not collect the line as we need to process the current\n // one as a new cue.\n if (!line || hasSubstring && (alreadyCollectedLine = true)) {\n // We are done parsing self cue.\n self.oncue && self.oncue(self.cue);\n self.cue = null;\n self.state = \"ID\";\n continue;\n }\n if (self.cue.text) {\n self.cue.text += \"\\n\";\n }\n self.cue.text += line.replace(/\\u2028/g, '\\n').replace(/u2029/g, '\\n');\n continue;\n case \"BADCUE\": // BADCUE\n // 54-62 - Collect and discard the remaining cue.\n if (!line) {\n self.state = \"ID\";\n }\n continue;\n }\n }\n } catch (e) {\n self.reportOrThrowError(e);\n\n // If we are currently parsing a cue, report what we have.\n if (self.state === \"CUETEXT\" && self.cue && self.oncue) {\n self.oncue(self.cue);\n }\n self.cue = null;\n // Enter BADWEBVTT state if header was not parsed correctly otherwise\n // another exception occurred so enter BADCUE state.\n self.state = self.state === \"INITIAL\" ? \"BADWEBVTT\" : \"BADCUE\";\n }\n return this;\n },\n flush: function () {\n var self = this;\n try {\n // Finish decoding the stream.\n self.buffer += self.decoder.decode();\n // Synthesize the end of the current cue or region.\n if (self.cue || self.state === \"HEADER\") {\n self.buffer += \"\\n\\n\";\n self.parse();\n }\n // If we've flushed, parsed, and we're still on the INITIAL state then\n // that means we don't have enough of the stream to parse the first\n // line.\n if (self.state === \"INITIAL\") {\n throw new ParsingError(ParsingError.Errors.BadSignature);\n }\n } catch(e) {\n self.reportOrThrowError(e);\n }\n self.onflush && self.onflush();\n return this;\n }\n};\n\nmodule.exports = WebVTT;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nvar autoKeyword = \"auto\";\nvar directionSetting = {\n \"\": 1,\n \"lr\": 1,\n \"rl\": 1\n};\nvar alignSetting = {\n \"start\": 1,\n \"center\": 1,\n \"end\": 1,\n \"left\": 1,\n \"right\": 1,\n \"auto\": 1,\n \"line-left\": 1,\n \"line-right\": 1\n};\n\nfunction findDirectionSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var dir = directionSetting[value.toLowerCase()];\n return dir ? value.toLowerCase() : false;\n}\n\nfunction findAlignSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var align = alignSetting[value.toLowerCase()];\n return align ? value.toLowerCase() : false;\n}\n\nfunction VTTCue(startTime, endTime, text) {\n /**\n * Shim implementation specific properties. These properties are not in\n * the spec.\n */\n\n // Lets us know when the VTTCue's data has changed in such a way that we need\n // to recompute its display state. This lets us compute its display state\n // lazily.\n this.hasBeenReset = false;\n\n /**\n * VTTCue and TextTrackCue properties\n * http://dev.w3.org/html5/webvtt/#vttcue-interface\n */\n\n var _id = \"\";\n var _pauseOnExit = false;\n var _startTime = startTime;\n var _endTime = endTime;\n var _text = text;\n var _region = null;\n var _vertical = \"\";\n var _snapToLines = true;\n var _line = \"auto\";\n var _lineAlign = \"start\";\n var _position = \"auto\";\n var _positionAlign = \"auto\";\n var _size = 100;\n var _align = \"center\";\n\n Object.defineProperties(this, {\n \"id\": {\n enumerable: true,\n get: function() {\n return _id;\n },\n set: function(value) {\n _id = \"\" + value;\n }\n },\n\n \"pauseOnExit\": {\n enumerable: true,\n get: function() {\n return _pauseOnExit;\n },\n set: function(value) {\n _pauseOnExit = !!value;\n }\n },\n\n \"startTime\": {\n enumerable: true,\n get: function() {\n return _startTime;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"Start time must be set to a number.\");\n }\n _startTime = value;\n this.hasBeenReset = true;\n }\n },\n\n \"endTime\": {\n enumerable: true,\n get: function() {\n return _endTime;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"End time must be set to a number.\");\n }\n _endTime = value;\n this.hasBeenReset = true;\n }\n },\n\n \"text\": {\n enumerable: true,\n get: function() {\n return _text;\n },\n set: function(value) {\n _text = \"\" + value;\n this.hasBeenReset = true;\n }\n },\n\n \"region\": {\n enumerable: true,\n get: function() {\n return _region;\n },\n set: function(value) {\n _region = value;\n this.hasBeenReset = true;\n }\n },\n\n \"vertical\": {\n enumerable: true,\n get: function() {\n return _vertical;\n },\n set: function(value) {\n var setting = findDirectionSetting(value);\n // Have to check for false because the setting an be an empty string.\n if (setting === false) {\n throw new SyntaxError(\"Vertical: an invalid or illegal direction string was specified.\");\n }\n _vertical = setting;\n this.hasBeenReset = true;\n }\n },\n\n \"snapToLines\": {\n enumerable: true,\n get: function() {\n return _snapToLines;\n },\n set: function(value) {\n _snapToLines = !!value;\n this.hasBeenReset = true;\n }\n },\n\n \"line\": {\n enumerable: true,\n get: function() {\n return _line;\n },\n set: function(value) {\n if (typeof value !== \"number\" && value !== autoKeyword) {\n throw new SyntaxError(\"Line: an invalid number or illegal string was specified.\");\n }\n _line = value;\n this.hasBeenReset = true;\n }\n },\n\n \"lineAlign\": {\n enumerable: true,\n get: function() {\n return _lineAlign;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n console.warn(\"lineAlign: an invalid or illegal string was specified.\");\n } else {\n _lineAlign = setting;\n this.hasBeenReset = true;\n }\n }\n },\n\n \"position\": {\n enumerable: true,\n get: function() {\n return _position;\n },\n set: function(value) {\n if (value < 0 || value > 100) {\n throw new Error(\"Position must be between 0 and 100.\");\n }\n _position = value;\n this.hasBeenReset = true;\n }\n },\n\n \"positionAlign\": {\n enumerable: true,\n get: function() {\n return _positionAlign;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n console.warn(\"positionAlign: an invalid or illegal string was specified.\");\n } else {\n _positionAlign = setting;\n this.hasBeenReset = true;\n }\n }\n },\n\n \"size\": {\n enumerable: true,\n get: function() {\n return _size;\n },\n set: function(value) {\n if (value < 0 || value > 100) {\n throw new Error(\"Size must be between 0 and 100.\");\n }\n _size = value;\n this.hasBeenReset = true;\n }\n },\n\n \"align\": {\n enumerable: true,\n get: function() {\n return _align;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n throw new SyntaxError(\"align: an invalid or illegal alignment string was specified.\");\n }\n _align = setting;\n this.hasBeenReset = true;\n }\n }\n });\n\n /**\n * Other spec defined properties\n */\n\n // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state\n this.displayState = undefined;\n}\n\n/**\n * VTTCue methods\n */\n\nVTTCue.prototype.getCueAsHTML = function() {\n // Assume WebVTT.convertCueToDOMTree is on the global.\n return WebVTT.convertCueToDOMTree(window, this.text);\n};\n\nmodule.exports = VTTCue;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nvar scrollSetting = {\n \"\": true,\n \"up\": true\n};\n\nfunction findScrollSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var scroll = scrollSetting[value.toLowerCase()];\n return scroll ? value.toLowerCase() : false;\n}\n\nfunction isValidPercentValue(value) {\n return typeof value === \"number\" && (value >= 0 && value <= 100);\n}\n\n// VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface\nfunction VTTRegion() {\n var _width = 100;\n var _lines = 3;\n var _regionAnchorX = 0;\n var _regionAnchorY = 100;\n var _viewportAnchorX = 0;\n var _viewportAnchorY = 100;\n var _scroll = \"\";\n\n Object.defineProperties(this, {\n \"width\": {\n enumerable: true,\n get: function() {\n return _width;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"Width must be between 0 and 100.\");\n }\n _width = value;\n }\n },\n \"lines\": {\n enumerable: true,\n get: function() {\n return _lines;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"Lines must be set to a number.\");\n }\n _lines = value;\n }\n },\n \"regionAnchorY\": {\n enumerable: true,\n get: function() {\n return _regionAnchorY;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"RegionAnchorX must be between 0 and 100.\");\n }\n _regionAnchorY = value;\n }\n },\n \"regionAnchorX\": {\n enumerable: true,\n get: function() {\n return _regionAnchorX;\n },\n set: function(value) {\n if(!isValidPercentValue(value)) {\n throw new Error(\"RegionAnchorY must be between 0 and 100.\");\n }\n _regionAnchorX = value;\n }\n },\n \"viewportAnchorY\": {\n enumerable: true,\n get: function() {\n return _viewportAnchorY;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"ViewportAnchorY must be between 0 and 100.\");\n }\n _viewportAnchorY = value;\n }\n },\n \"viewportAnchorX\": {\n enumerable: true,\n get: function() {\n return _viewportAnchorX;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"ViewportAnchorX must be between 0 and 100.\");\n }\n _viewportAnchorX = value;\n }\n },\n \"scroll\": {\n enumerable: true,\n get: function() {\n return _scroll;\n },\n set: function(value) {\n var setting = findScrollSetting(value);\n // Have to check for false as an empty string is a legal value.\n if (setting === false) {\n console.warn(\"Scroll: an invalid or illegal string was specified.\");\n } else {\n _scroll = setting;\n }\n }\n }\n });\n}\n\nmodule.exports = VTTRegion;\n","function _arrayLikeToArray(arr, len) {\n if (len == null || len > arr.length) len = arr.length;\n for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];\n return arr2;\n}\nmodule.exports = _arrayLikeToArray, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _arrayWithHoles(arr) {\n if (Array.isArray(arr)) return arr;\n}\nmodule.exports = _arrayWithHoles, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var arrayLikeToArray = require(\"./arrayLikeToArray.js\");\nfunction _arrayWithoutHoles(arr) {\n if (Array.isArray(arr)) return arrayLikeToArray(arr);\n}\nmodule.exports = _arrayWithoutHoles, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _classCallCheck(instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n}\nmodule.exports = _classCallCheck, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var toPropertyKey = require(\"./toPropertyKey.js\");\nfunction _defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, toPropertyKey(descriptor.key), descriptor);\n }\n}\nfunction _createClass(Constructor, protoProps, staticProps) {\n if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n if (staticProps) _defineProperties(Constructor, staticProps);\n Object.defineProperty(Constructor, \"prototype\", {\n writable: false\n });\n return Constructor;\n}\nmodule.exports = _createClass, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var unsupportedIterableToArray = require(\"./unsupportedIterableToArray.js\");\nfunction _createForOfIteratorHelper(o, allowArrayLike) {\n var it = typeof Symbol !== \"undefined\" && o[Symbol.iterator] || o[\"@@iterator\"];\n if (!it) {\n if (Array.isArray(o) || (it = unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === \"number\") {\n if (it) o = it;\n var i = 0;\n var F = function F() {};\n return {\n s: F,\n n: function n() {\n if (i >= o.length) return {\n done: true\n };\n return {\n done: false,\n value: o[i++]\n };\n },\n e: function e(_e) {\n throw _e;\n },\n f: F\n };\n }\n throw new TypeError(\"Invalid attempt to iterate non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n }\n var normalCompletion = true,\n didErr = false,\n err;\n return {\n s: function s() {\n it = it.call(o);\n },\n n: function n() {\n var step = it.next();\n normalCompletion = step.done;\n return step;\n },\n e: function e(_e2) {\n didErr = true;\n err = _e2;\n },\n f: function f() {\n try {\n if (!normalCompletion && it[\"return\"] != null) it[\"return\"]();\n } finally {\n if (didErr) throw err;\n }\n }\n };\n}\nmodule.exports = _createForOfIteratorHelper, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _extends() {\n module.exports = _extends = Object.assign ? Object.assign.bind() : function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n return target;\n }, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;\n return _extends.apply(this, arguments);\n}\nmodule.exports = _extends, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _iterableToArray(iter) {\n if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter);\n}\nmodule.exports = _iterableToArray, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _iterableToArrayLimit(arr, i) {\n var _i = null == arr ? null : \"undefined\" != typeof Symbol && arr[Symbol.iterator] || arr[\"@@iterator\"];\n if (null != _i) {\n var _s,\n _e,\n _x,\n _r,\n _arr = [],\n _n = !0,\n _d = !1;\n try {\n if (_x = (_i = _i.call(arr)).next, 0 === i) {\n if (Object(_i) !== _i) return;\n _n = !1;\n } else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0);\n } catch (err) {\n _d = !0, _e = err;\n } finally {\n try {\n if (!_n && null != _i[\"return\"] && (_r = _i[\"return\"](), Object(_r) !== _r)) return;\n } finally {\n if (_d) throw _e;\n }\n }\n return _arr;\n }\n}\nmodule.exports = _iterableToArrayLimit, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _nonIterableRest() {\n throw new TypeError(\"Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}\nmodule.exports = _nonIterableRest, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _nonIterableSpread() {\n throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}\nmodule.exports = _nonIterableSpread, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var _typeof = require(\"./typeof.js\")[\"default\"];\nfunction _regeneratorRuntime() {\n \"use strict\"; /*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */\n module.exports = _regeneratorRuntime = function _regeneratorRuntime() {\n return exports;\n }, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;\n var exports = {},\n Op = Object.prototype,\n hasOwn = Op.hasOwnProperty,\n defineProperty = Object.defineProperty || function (obj, key, desc) {\n obj[key] = desc.value;\n },\n $Symbol = \"function\" == typeof Symbol ? Symbol : {},\n iteratorSymbol = $Symbol.iterator || \"@@iterator\",\n asyncIteratorSymbol = $Symbol.asyncIterator || \"@@asyncIterator\",\n toStringTagSymbol = $Symbol.toStringTag || \"@@toStringTag\";\n function define(obj, key, value) {\n return Object.defineProperty(obj, key, {\n value: value,\n enumerable: !0,\n configurable: !0,\n writable: !0\n }), obj[key];\n }\n try {\n define({}, \"\");\n } catch (err) {\n define = function define(obj, key, value) {\n return obj[key] = value;\n };\n }\n function wrap(innerFn, outerFn, self, tryLocsList) {\n var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator,\n generator = Object.create(protoGenerator.prototype),\n context = new Context(tryLocsList || []);\n return defineProperty(generator, \"_invoke\", {\n value: makeInvokeMethod(innerFn, self, context)\n }), generator;\n }\n function tryCatch(fn, obj, arg) {\n try {\n return {\n type: \"normal\",\n arg: fn.call(obj, arg)\n };\n } catch (err) {\n return {\n type: \"throw\",\n arg: err\n };\n }\n }\n exports.wrap = wrap;\n var ContinueSentinel = {};\n function Generator() {}\n function GeneratorFunction() {}\n function GeneratorFunctionPrototype() {}\n var IteratorPrototype = {};\n define(IteratorPrototype, iteratorSymbol, function () {\n return this;\n });\n var getProto = Object.getPrototypeOf,\n NativeIteratorPrototype = getProto && getProto(getProto(values([])));\n NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol) && (IteratorPrototype = NativeIteratorPrototype);\n var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);\n function defineIteratorMethods(prototype) {\n [\"next\", \"throw\", \"return\"].forEach(function (method) {\n define(prototype, method, function (arg) {\n return this._invoke(method, arg);\n });\n });\n }\n function AsyncIterator(generator, PromiseImpl) {\n function invoke(method, arg, resolve, reject) {\n var record = tryCatch(generator[method], generator, arg);\n if (\"throw\" !== record.type) {\n var result = record.arg,\n value = result.value;\n return value && \"object\" == _typeof(value) && hasOwn.call(value, \"__await\") ? PromiseImpl.resolve(value.__await).then(function (value) {\n invoke(\"next\", value, resolve, reject);\n }, function (err) {\n invoke(\"throw\", err, resolve, reject);\n }) : PromiseImpl.resolve(value).then(function (unwrapped) {\n result.value = unwrapped, resolve(result);\n }, function (error) {\n return invoke(\"throw\", error, resolve, reject);\n });\n }\n reject(record.arg);\n }\n var previousPromise;\n defineProperty(this, \"_invoke\", {\n value: function value(method, arg) {\n function callInvokeWithMethodAndArg() {\n return new PromiseImpl(function (resolve, reject) {\n invoke(method, arg, resolve, reject);\n });\n }\n return previousPromise = previousPromise ? previousPromise.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();\n }\n });\n }\n function makeInvokeMethod(innerFn, self, context) {\n var state = \"suspendedStart\";\n return function (method, arg) {\n if (\"executing\" === state) throw new Error(\"Generator is already running\");\n if (\"completed\" === state) {\n if (\"throw\" === method) throw arg;\n return doneResult();\n }\n for (context.method = method, context.arg = arg;;) {\n var delegate = context.delegate;\n if (delegate) {\n var delegateResult = maybeInvokeDelegate(delegate, context);\n if (delegateResult) {\n if (delegateResult === ContinueSentinel) continue;\n return delegateResult;\n }\n }\n if (\"next\" === context.method) context.sent = context._sent = context.arg;else if (\"throw\" === context.method) {\n if (\"suspendedStart\" === state) throw state = \"completed\", context.arg;\n context.dispatchException(context.arg);\n } else \"return\" === context.method && context.abrupt(\"return\", context.arg);\n state = \"executing\";\n var record = tryCatch(innerFn, self, context);\n if (\"normal\" === record.type) {\n if (state = context.done ? \"completed\" : \"suspendedYield\", record.arg === ContinueSentinel) continue;\n return {\n value: record.arg,\n done: context.done\n };\n }\n \"throw\" === record.type && (state = \"completed\", context.method = \"throw\", context.arg = record.arg);\n }\n };\n }\n function maybeInvokeDelegate(delegate, context) {\n var methodName = context.method,\n method = delegate.iterator[methodName];\n if (undefined === method) return context.delegate = null, \"throw\" === methodName && delegate.iterator[\"return\"] && (context.method = \"return\", context.arg = undefined, maybeInvokeDelegate(delegate, context), \"throw\" === context.method) || \"return\" !== methodName && (context.method = \"throw\", context.arg = new TypeError(\"The iterator does not provide a '\" + methodName + \"' method\")), ContinueSentinel;\n var record = tryCatch(method, delegate.iterator, context.arg);\n if (\"throw\" === record.type) return context.method = \"throw\", context.arg = record.arg, context.delegate = null, ContinueSentinel;\n var info = record.arg;\n return info ? info.done ? (context[delegate.resultName] = info.value, context.next = delegate.nextLoc, \"return\" !== context.method && (context.method = \"next\", context.arg = undefined), context.delegate = null, ContinueSentinel) : info : (context.method = \"throw\", context.arg = new TypeError(\"iterator result is not an object\"), context.delegate = null, ContinueSentinel);\n }\n function pushTryEntry(locs) {\n var entry = {\n tryLoc: locs[0]\n };\n 1 in locs && (entry.catchLoc = locs[1]), 2 in locs && (entry.finallyLoc = locs[2], entry.afterLoc = locs[3]), this.tryEntries.push(entry);\n }\n function resetTryEntry(entry) {\n var record = entry.completion || {};\n record.type = \"normal\", delete record.arg, entry.completion = record;\n }\n function Context(tryLocsList) {\n this.tryEntries = [{\n tryLoc: \"root\"\n }], tryLocsList.forEach(pushTryEntry, this), this.reset(!0);\n }\n function values(iterable) {\n if (iterable) {\n var iteratorMethod = iterable[iteratorSymbol];\n if (iteratorMethod) return iteratorMethod.call(iterable);\n if (\"function\" == typeof iterable.next) return iterable;\n if (!isNaN(iterable.length)) {\n var i = -1,\n next = function next() {\n for (; ++i < iterable.length;) if (hasOwn.call(iterable, i)) return next.value = iterable[i], next.done = !1, next;\n return next.value = undefined, next.done = !0, next;\n };\n return next.next = next;\n }\n }\n return {\n next: doneResult\n };\n }\n function doneResult() {\n return {\n value: undefined,\n done: !0\n };\n }\n return GeneratorFunction.prototype = GeneratorFunctionPrototype, defineProperty(Gp, \"constructor\", {\n value: GeneratorFunctionPrototype,\n configurable: !0\n }), defineProperty(GeneratorFunctionPrototype, \"constructor\", {\n value: GeneratorFunction,\n configurable: !0\n }), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, toStringTagSymbol, \"GeneratorFunction\"), exports.isGeneratorFunction = function (genFun) {\n var ctor = \"function\" == typeof genFun && genFun.constructor;\n return !!ctor && (ctor === GeneratorFunction || \"GeneratorFunction\" === (ctor.displayName || ctor.name));\n }, exports.mark = function (genFun) {\n return Object.setPrototypeOf ? Object.setPrototypeOf(genFun, GeneratorFunctionPrototype) : (genFun.__proto__ = GeneratorFunctionPrototype, define(genFun, toStringTagSymbol, \"GeneratorFunction\")), genFun.prototype = Object.create(Gp), genFun;\n }, exports.awrap = function (arg) {\n return {\n __await: arg\n };\n }, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, asyncIteratorSymbol, function () {\n return this;\n }), exports.AsyncIterator = AsyncIterator, exports.async = function (innerFn, outerFn, self, tryLocsList, PromiseImpl) {\n void 0 === PromiseImpl && (PromiseImpl = Promise);\n var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList), PromiseImpl);\n return exports.isGeneratorFunction(outerFn) ? iter : iter.next().then(function (result) {\n return result.done ? result.value : iter.next();\n });\n }, defineIteratorMethods(Gp), define(Gp, toStringTagSymbol, \"Generator\"), define(Gp, iteratorSymbol, function () {\n return this;\n }), define(Gp, \"toString\", function () {\n return \"[object Generator]\";\n }), exports.keys = function (val) {\n var object = Object(val),\n keys = [];\n for (var key in object) keys.push(key);\n return keys.reverse(), function next() {\n for (; keys.length;) {\n var key = keys.pop();\n if (key in object) return next.value = key, next.done = !1, next;\n }\n return next.done = !0, next;\n };\n }, exports.values = values, Context.prototype = {\n constructor: Context,\n reset: function reset(skipTempReset) {\n if (this.prev = 0, this.next = 0, this.sent = this._sent = undefined, this.done = !1, this.delegate = null, this.method = \"next\", this.arg = undefined, this.tryEntries.forEach(resetTryEntry), !skipTempReset) for (var name in this) \"t\" === name.charAt(0) && hasOwn.call(this, name) && !isNaN(+name.slice(1)) && (this[name] = undefined);\n },\n stop: function stop() {\n this.done = !0;\n var rootRecord = this.tryEntries[0].completion;\n if (\"throw\" === rootRecord.type) throw rootRecord.arg;\n return this.rval;\n },\n dispatchException: function dispatchException(exception) {\n if (this.done) throw exception;\n var context = this;\n function handle(loc, caught) {\n return record.type = \"throw\", record.arg = exception, context.next = loc, caught && (context.method = \"next\", context.arg = undefined), !!caught;\n }\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i],\n record = entry.completion;\n if (\"root\" === entry.tryLoc) return handle(\"end\");\n if (entry.tryLoc <= this.prev) {\n var hasCatch = hasOwn.call(entry, \"catchLoc\"),\n hasFinally = hasOwn.call(entry, \"finallyLoc\");\n if (hasCatch && hasFinally) {\n if (this.prev < entry.catchLoc) return handle(entry.catchLoc, !0);\n if (this.prev < entry.finallyLoc) return handle(entry.finallyLoc);\n } else if (hasCatch) {\n if (this.prev < entry.catchLoc) return handle(entry.catchLoc, !0);\n } else {\n if (!hasFinally) throw new Error(\"try statement without catch or finally\");\n if (this.prev < entry.finallyLoc) return handle(entry.finallyLoc);\n }\n }\n }\n },\n abrupt: function abrupt(type, arg) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc <= this.prev && hasOwn.call(entry, \"finallyLoc\") && this.prev < entry.finallyLoc) {\n var finallyEntry = entry;\n break;\n }\n }\n finallyEntry && (\"break\" === type || \"continue\" === type) && finallyEntry.tryLoc <= arg && arg <= finallyEntry.finallyLoc && (finallyEntry = null);\n var record = finallyEntry ? finallyEntry.completion : {};\n return record.type = type, record.arg = arg, finallyEntry ? (this.method = \"next\", this.next = finallyEntry.finallyLoc, ContinueSentinel) : this.complete(record);\n },\n complete: function complete(record, afterLoc) {\n if (\"throw\" === record.type) throw record.arg;\n return \"break\" === record.type || \"continue\" === record.type ? this.next = record.arg : \"return\" === record.type ? (this.rval = this.arg = record.arg, this.method = \"return\", this.next = \"end\") : \"normal\" === record.type && afterLoc && (this.next = afterLoc), ContinueSentinel;\n },\n finish: function finish(finallyLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.finallyLoc === finallyLoc) return this.complete(entry.completion, entry.afterLoc), resetTryEntry(entry), ContinueSentinel;\n }\n },\n \"catch\": function _catch(tryLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc === tryLoc) {\n var record = entry.completion;\n if (\"throw\" === record.type) {\n var thrown = record.arg;\n resetTryEntry(entry);\n }\n return thrown;\n }\n }\n throw new Error(\"illegal catch attempt\");\n },\n delegateYield: function delegateYield(iterable, resultName, nextLoc) {\n return this.delegate = {\n iterator: values(iterable),\n resultName: resultName,\n nextLoc: nextLoc\n }, \"next\" === this.method && (this.arg = undefined), ContinueSentinel;\n }\n }, exports;\n}\nmodule.exports = _regeneratorRuntime, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var arrayWithHoles = require(\"./arrayWithHoles.js\");\nvar iterableToArrayLimit = require(\"./iterableToArrayLimit.js\");\nvar unsupportedIterableToArray = require(\"./unsupportedIterableToArray.js\");\nvar nonIterableRest = require(\"./nonIterableRest.js\");\nfunction _slicedToArray(arr, i) {\n return arrayWithHoles(arr) || iterableToArrayLimit(arr, i) || unsupportedIterableToArray(arr, i) || nonIterableRest();\n}\nmodule.exports = _slicedToArray, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var arrayWithoutHoles = require(\"./arrayWithoutHoles.js\");\nvar iterableToArray = require(\"./iterableToArray.js\");\nvar unsupportedIterableToArray = require(\"./unsupportedIterableToArray.js\");\nvar nonIterableSpread = require(\"./nonIterableSpread.js\");\nfunction _toConsumableArray(arr) {\n return arrayWithoutHoles(arr) || iterableToArray(arr) || unsupportedIterableToArray(arr) || nonIterableSpread();\n}\nmodule.exports = _toConsumableArray, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var _typeof = require(\"./typeof.js\")[\"default\"];\nfunction _toPrimitive(input, hint) {\n if (_typeof(input) !== \"object\" || input === null) return input;\n var prim = input[Symbol.toPrimitive];\n if (prim !== undefined) {\n var res = prim.call(input, hint || \"default\");\n if (_typeof(res) !== \"object\") return res;\n throw new TypeError(\"@@toPrimitive must return a primitive value.\");\n }\n return (hint === \"string\" ? String : Number)(input);\n}\nmodule.exports = _toPrimitive, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var _typeof = require(\"./typeof.js\")[\"default\"];\nvar toPrimitive = require(\"./toPrimitive.js\");\nfunction _toPropertyKey(arg) {\n var key = toPrimitive(arg, \"string\");\n return _typeof(key) === \"symbol\" ? key : String(key);\n}\nmodule.exports = _toPropertyKey, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","function _typeof(obj) {\n \"@babel/helpers - typeof\";\n\n return (module.exports = _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) {\n return typeof obj;\n } : function (obj) {\n return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n }, module.exports.__esModule = true, module.exports[\"default\"] = module.exports), _typeof(obj);\n}\nmodule.exports = _typeof, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","var arrayLikeToArray = require(\"./arrayLikeToArray.js\");\nfunction _unsupportedIterableToArray(o, minLen) {\n if (!o) return;\n if (typeof o === \"string\") return arrayLikeToArray(o, minLen);\n var n = Object.prototype.toString.call(o).slice(8, -1);\n if (n === \"Object\" && o.constructor) n = o.constructor.name;\n if (n === \"Map\" || n === \"Set\") return Array.from(o);\n if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return arrayLikeToArray(o, minLen);\n}\nmodule.exports = _unsupportedIterableToArray, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","/* eslint-disable no-undefined,no-param-reassign,no-shadow */\n\n/**\n * Throttle execution of a function. Especially useful for rate limiting\n * execution of handlers on events like resize and scroll.\n *\n * @param {number} delay - A zero-or-greater delay in milliseconds. For event callbacks, values around 100 or 250 (or even higher) are most useful.\n * @param {boolean} [noTrailing] - Optional, defaults to false. If noTrailing is true, callback will only execute every `delay` milliseconds while the\n * throttled-function is being called. If noTrailing is false or unspecified, callback will be executed one final time\n * after the last throttled-function call. (After the throttled-function has not been called for `delay` milliseconds,\n * the internal counter is reset).\n * @param {Function} callback - A function to be executed after delay milliseconds. The `this` context and all arguments are passed through, as-is,\n * to `callback` when the throttled-function is executed.\n * @param {boolean} [debounceMode] - If `debounceMode` is true (at begin), schedule `clear` to execute after `delay` ms. If `debounceMode` is false (at end),\n * schedule `callback` to execute after `delay` ms.\n *\n * @returns {Function} A new, throttled, function.\n */\nexport default function (delay, noTrailing, callback, debounceMode) {\n\t/*\n\t * After wrapper has stopped being called, this timeout ensures that\n\t * `callback` is executed at the proper times in `throttle` and `end`\n\t * debounce modes.\n\t */\n\tlet timeoutID;\n\tlet cancelled = false;\n\n\t// Keep track of the last time `callback` was executed.\n\tlet lastExec = 0;\n\n\t// Function to clear existing timeout\n\tfunction clearExistingTimeout() {\n\t\tif (timeoutID) {\n\t\t\tclearTimeout(timeoutID);\n\t\t}\n\t}\n\n\t// Function to cancel next exec\n\tfunction cancel() {\n\t\tclearExistingTimeout();\n\t\tcancelled = true;\n\t}\n\n\t// `noTrailing` defaults to falsy.\n\tif (typeof noTrailing !== 'boolean') {\n\t\tdebounceMode = callback;\n\t\tcallback = noTrailing;\n\t\tnoTrailing = undefined;\n\t}\n\n\t/*\n\t * The `wrapper` function encapsulates all of the throttling / debouncing\n\t * functionality and when executed will limit the rate at which `callback`\n\t * is executed.\n\t */\n\tfunction wrapper(...arguments_) {\n\t\tlet self = this;\n\t\tlet elapsed = Date.now() - lastExec;\n\n\t\tif (cancelled) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Execute `callback` and update the `lastExec` timestamp.\n\t\tfunction exec() {\n\t\t\tlastExec = Date.now();\n\t\t\tcallback.apply(self, arguments_);\n\t\t}\n\n\t\t/*\n\t\t * If `debounceMode` is true (at begin) this is used to clear the flag\n\t\t * to allow future `callback` executions.\n\t\t */\n\t\tfunction clear() {\n\t\t\ttimeoutID = undefined;\n\t\t}\n\n\t\tif (debounceMode && !timeoutID) {\n\t\t\t/*\n\t\t\t * Since `wrapper` is being called for the first time and\n\t\t\t * `debounceMode` is true (at begin), execute `callback`.\n\t\t\t */\n\t\t\texec();\n\t\t}\n\n\t\tclearExistingTimeout();\n\n\t\tif (debounceMode === undefined && elapsed > delay) {\n\t\t\t/*\n\t\t\t * In throttle mode, if `delay` time has been exceeded, execute\n\t\t\t * `callback`.\n\t\t\t */\n\t\t\texec();\n\t\t} else if (noTrailing !== true) {\n\t\t\t/*\n\t\t\t * In trailing throttle mode, since `delay` time has not been\n\t\t\t * exceeded, schedule `callback` to execute `delay` ms after most\n\t\t\t * recent execution.\n\t\t\t *\n\t\t\t * If `debounceMode` is true (at begin), schedule `clear` to execute\n\t\t\t * after `delay` ms.\n\t\t\t *\n\t\t\t * If `debounceMode` is false (at end), schedule `callback` to\n\t\t\t * execute after `delay` ms.\n\t\t\t */\n\t\t\ttimeoutID = setTimeout(\n\t\t\t\tdebounceMode ? clear : exec,\n\t\t\t\tdebounceMode === undefined ? delay - elapsed : delay\n\t\t\t);\n\t\t}\n\t}\n\n\twrapper.cancel = cancel;\n\n\t// Return the wrapper function.\n\treturn wrapper;\n}\n","/* eslint-disable no-undefined */\n\nimport throttle from './throttle';\n\n/**\n * Debounce execution of a function. Debouncing, unlike throttling,\n * guarantees that a function is only executed a single time, either at the\n * very beginning of a series of calls, or at the very end.\n *\n * @param {number} delay - A zero-or-greater delay in milliseconds. For event callbacks, values around 100 or 250 (or even higher) are most useful.\n * @param {boolean} [atBegin] - Optional, defaults to false. If atBegin is false or unspecified, callback will only be executed `delay` milliseconds\n * after the last debounced-function call. If atBegin is true, callback will be executed only at the first debounced-function call.\n * (After the throttled-function has not been called for `delay` milliseconds, the internal counter is reset).\n * @param {Function} callback - A function to be executed after delay milliseconds. The `this` context and all arguments are passed through, as-is,\n * to `callback` when the debounced-function is executed.\n *\n * @returns {Function} A new, debounced function.\n */\nexport default function (delay, atBegin, callback) {\n\treturn callback === undefined\n\t\t? throttle(delay, atBegin, false)\n\t\t: throttle(delay, callback, atBegin !== false);\n}\n","export default function _assertThisInitialized(self) {\n if (self === void 0) {\n throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n }\n return self;\n}","import setPrototypeOf from \"./setPrototypeOf.js\";\nimport isNativeReflectConstruct from \"./isNativeReflectConstruct.js\";\nexport default function _construct(Parent, args, Class) {\n if (isNativeReflectConstruct()) {\n _construct = Reflect.construct.bind();\n } else {\n _construct = function _construct(Parent, args, Class) {\n var a = [null];\n a.push.apply(a, args);\n var Constructor = Function.bind.apply(Parent, a);\n var instance = new Constructor();\n if (Class) setPrototypeOf(instance, Class.prototype);\n return instance;\n };\n }\n return _construct.apply(null, arguments);\n}","export default function _extends() {\n _extends = Object.assign ? Object.assign.bind() : function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n return target;\n };\n return _extends.apply(this, arguments);\n}","export default function _getPrototypeOf(o) {\n _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) {\n return o.__proto__ || Object.getPrototypeOf(o);\n };\n return _getPrototypeOf(o);\n}","import setPrototypeOf from \"./setPrototypeOf.js\";\nexport default function _inherits(subClass, superClass) {\n if (typeof superClass !== \"function\" && superClass !== null) {\n throw new TypeError(\"Super expression must either be null or a function\");\n }\n subClass.prototype = Object.create(superClass && superClass.prototype, {\n constructor: {\n value: subClass,\n writable: true,\n configurable: true\n }\n });\n Object.defineProperty(subClass, \"prototype\", {\n writable: false\n });\n if (superClass) setPrototypeOf(subClass, superClass);\n}","import setPrototypeOf from \"./setPrototypeOf.js\";\nexport default function _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n setPrototypeOf(subClass, superClass);\n}","export default function _isNativeReflectConstruct() {\n if (typeof Reflect === \"undefined\" || !Reflect.construct) return false;\n if (Reflect.construct.sham) return false;\n if (typeof Proxy === \"function\") return true;\n try {\n Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));\n return true;\n } catch (e) {\n return false;\n }\n}","export default function _setPrototypeOf(o, p) {\n _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) {\n o.__proto__ = p;\n return o;\n };\n return _setPrototypeOf(o, p);\n}","import getPrototypeOf from \"./getPrototypeOf.js\";\nimport setPrototypeOf from \"./setPrototypeOf.js\";\nimport isNativeFunction from \"./isNativeFunction.js\";\nimport construct from \"./construct.js\";\nexport default function _wrapNativeSuper(Class) {\n var _cache = typeof Map === \"function\" ? new Map() : undefined;\n _wrapNativeSuper = function _wrapNativeSuper(Class) {\n if (Class === null || !isNativeFunction(Class)) return Class;\n if (typeof Class !== \"function\") {\n throw new TypeError(\"Super expression must either be null or a function\");\n }\n if (typeof _cache !== \"undefined\") {\n if (_cache.has(Class)) return _cache.get(Class);\n _cache.set(Class, Wrapper);\n }\n function Wrapper() {\n return construct(Class, arguments, getPrototypeOf(this).constructor);\n }\n Wrapper.prototype = Object.create(Class.prototype, {\n constructor: {\n value: Wrapper,\n enumerable: false,\n writable: true,\n configurable: true\n }\n });\n return setPrototypeOf(Wrapper, Class);\n };\n return _wrapNativeSuper(Class);\n}","export default function _isNativeFunction(fn) {\n return Function.toString.call(fn).indexOf(\"[native code]\") !== -1;\n}","// The module cache\nvar __webpack_module_cache__ = {};\n\n// The require function\nfunction __webpack_require__(moduleId) {\n\t// Check if module is in cache\n\tvar cachedModule = __webpack_module_cache__[moduleId];\n\tif (cachedModule !== undefined) {\n\t\treturn cachedModule.exports;\n\t}\n\t// Create a new module (and put it into the cache)\n\tvar module = __webpack_module_cache__[moduleId] = {\n\t\t// no module.id needed\n\t\t// no module.loaded needed\n\t\texports: {}\n\t};\n\n\t// Execute the module function\n\t__webpack_modules__[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n\t// Return the exports of the module\n\treturn module.exports;\n}\n\n","// getDefaultExport function for compatibility with non-harmony modules\n__webpack_require__.n = function(module) {\n\tvar getter = module && module.__esModule ?\n\t\tfunction() { return module['default']; } :\n\t\tfunction() { return module; };\n\t__webpack_require__.d(getter, { a: getter });\n\treturn getter;\n};","var getProto = Object.getPrototypeOf ? function(obj) { return Object.getPrototypeOf(obj); } : function(obj) { return obj.__proto__; };\nvar leafPrototypes;\n// create a fake namespace object\n// mode & 1: value is a module id, require it\n// mode & 2: merge all properties of value into the ns\n// mode & 4: return value when already ns object\n// mode & 16: return value when it's Promise-like\n// mode & 8|1: behave like require\n__webpack_require__.t = function(value, mode) {\n\tif(mode & 1) value = this(value);\n\tif(mode & 8) return value;\n\tif(typeof value === 'object' && value) {\n\t\tif((mode & 4) && value.__esModule) return value;\n\t\tif((mode & 16) && typeof value.then === 'function') return value;\n\t}\n\tvar ns = Object.create(null);\n\t__webpack_require__.r(ns);\n\tvar def = {};\n\tleafPrototypes = leafPrototypes || [null, getProto({}), getProto([]), getProto(getProto)];\n\tfor(var current = mode & 2 && value; typeof current == 'object' && !~leafPrototypes.indexOf(current); current = getProto(current)) {\n\t\tObject.getOwnPropertyNames(current).forEach(function(key) { def[key] = function() { return value[key]; }; });\n\t}\n\tdef['default'] = function() { return value; };\n\t__webpack_require__.d(ns, def);\n\treturn ns;\n};","// define getter functions for harmony exports\n__webpack_require__.d = function(exports, definition) {\n\tfor(var key in definition) {\n\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n\t\t}\n\t}\n};","__webpack_require__.g = (function() {\n\tif (typeof globalThis === 'object') return globalThis;\n\ttry {\n\t\treturn this || new Function('return this')();\n\t} catch (e) {\n\t\tif (typeof window === 'object') return window;\n\t}\n})();","__webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }","// define __esModule on exports\n__webpack_require__.r = function(exports) {\n\tif(typeof Symbol !== 'undefined' && Symbol.toStringTag) {\n\t\tObject.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });\n\t}\n\tObject.defineProperty(exports, '__esModule', { value: true });\n};","__webpack_require__.nc = undefined;","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n var _, done = false;\r\n for (var i = decorators.length - 1; i >= 0; i--) {\r\n var context = {};\r\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n if (kind === \"accessor\") {\r\n if (result === void 0) continue;\r\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n if (_ = accept(result.get)) descriptor.get = _;\r\n if (_ = accept(result.set)) descriptor.set = _;\r\n if (_ = accept(result.init)) initializers.push(_);\r\n }\r\n else if (_ = accept(result)) {\r\n if (kind === \"field\") initializers.push(_);\r\n else descriptor[key] = _;\r\n }\r\n }\r\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n var useValue = arguments.length > 2;\r\n for (var i = 0; i < initializers.length; i++) {\r\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n }\r\n return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\r\n};\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n","import { __assign } from \"tslib\";\nimport * as React from 'react';\nimport hoistNonReactStatics from 'hoist-non-react-statics';\nimport { invariantIntlContext } from '../utils';\nfunction getDisplayName(Component) {\n return Component.displayName || Component.name || 'Component';\n}\n// This is primarily dealing with packaging systems where multiple copies of react-intl\n// might exist\nvar IntlContext = typeof window !== 'undefined'\n ? window.__REACT_INTL_CONTEXT__ ||\n (window.__REACT_INTL_CONTEXT__ = React.createContext(null))\n : React.createContext(null);\nvar IntlConsumer = IntlContext.Consumer, IntlProvider = IntlContext.Provider;\nexport var Provider = IntlProvider;\nexport var Context = IntlContext;\nexport default function injectIntl(WrappedComponent, options) {\n var _a = options || {}, _b = _a.intlPropName, intlPropName = _b === void 0 ? 'intl' : _b, _c = _a.forwardRef, forwardRef = _c === void 0 ? false : _c, _d = _a.enforceContext, enforceContext = _d === void 0 ? true : _d;\n var WithIntl = function (props) { return (React.createElement(IntlConsumer, null, function (intl) {\n var _a;\n if (enforceContext) {\n invariantIntlContext(intl);\n }\n var intlProp = (_a = {}, _a[intlPropName] = intl, _a);\n return (React.createElement(WrappedComponent, __assign({}, props, intlProp, { ref: forwardRef ? props.forwardedRef : null })));\n })); };\n WithIntl.displayName = \"injectIntl(\".concat(getDisplayName(WrappedComponent), \")\");\n WithIntl.WrappedComponent = WrappedComponent;\n if (forwardRef) {\n return hoistNonReactStatics(React.forwardRef(function (props, ref) { return (React.createElement(WithIntl, __assign({}, props, { forwardedRef: ref }))); }), WrappedComponent);\n }\n return hoistNonReactStatics(WithIntl, WrappedComponent);\n}\n","/**\n * Cannot do Math.log(x) / Math.log(10) bc if IEEE floating point issue\n * @param x number\n */\nexport function getMagnitude(x) {\n // Cannot count string length via Number.toString because it may use scientific notation\n // for very small or very large numbers.\n return Math.floor(Math.log(x) * Math.LOG10E);\n}\nexport function repeat(s, times) {\n if (typeof s.repeat === 'function') {\n return s.repeat(times);\n }\n var arr = new Array(times);\n for (var i = 0; i < arr.length; i++) {\n arr[i] = s;\n }\n return arr.join('');\n}\nexport function setInternalSlot(map, pl, field, value) {\n if (!map.get(pl)) {\n map.set(pl, Object.create(null));\n }\n var slots = map.get(pl);\n slots[field] = value;\n}\nexport function setMultiInternalSlots(map, pl, props) {\n for (var _i = 0, _a = Object.keys(props); _i < _a.length; _i++) {\n var k = _a[_i];\n setInternalSlot(map, pl, k, props[k]);\n }\n}\nexport function getInternalSlot(map, pl, field) {\n return getMultiInternalSlots(map, pl, field)[field];\n}\nexport function getMultiInternalSlots(map, pl) {\n var fields = [];\n for (var _i = 2; _i < arguments.length; _i++) {\n fields[_i - 2] = arguments[_i];\n }\n var slots = map.get(pl);\n if (!slots) {\n throw new TypeError(\"\".concat(pl, \" InternalSlot has not been initialized\"));\n }\n return fields.reduce(function (all, f) {\n all[f] = slots[f];\n return all;\n }, Object.create(null));\n}\nexport function isLiteralPart(patternPart) {\n return patternPart.type === 'literal';\n}\n/*\n 17 ECMAScript Standard Built-in Objects:\n Every built-in Function object, including constructors, that is not\n identified as an anonymous function has a name property whose value\n is a String.\n\n Unless otherwise specified, the name property of a built-in Function\n object, if it exists, has the attributes { [[Writable]]: false,\n [[Enumerable]]: false, [[Configurable]]: true }.\n*/\nexport function defineProperty(target, name, _a) {\n var value = _a.value;\n Object.defineProperty(target, name, {\n configurable: true,\n enumerable: false,\n writable: true,\n value: value,\n });\n}\nexport var UNICODE_EXTENSION_SEQUENCE_REGEX = /-u(?:-[0-9a-z]{2,8})+/gi;\nexport function invariant(condition, message, Err) {\n if (Err === void 0) { Err = Error; }\n if (!condition) {\n throw new Err(message);\n }\n}\n","export var ErrorKind;\n(function (ErrorKind) {\n /** Argument is unclosed (e.g. `{0`) */\n ErrorKind[ErrorKind[\"EXPECT_ARGUMENT_CLOSING_BRACE\"] = 1] = \"EXPECT_ARGUMENT_CLOSING_BRACE\";\n /** Argument is empty (e.g. `{}`). */\n ErrorKind[ErrorKind[\"EMPTY_ARGUMENT\"] = 2] = \"EMPTY_ARGUMENT\";\n /** Argument is malformed (e.g. `{foo!}``) */\n ErrorKind[ErrorKind[\"MALFORMED_ARGUMENT\"] = 3] = \"MALFORMED_ARGUMENT\";\n /** Expect an argument type (e.g. `{foo,}`) */\n ErrorKind[ErrorKind[\"EXPECT_ARGUMENT_TYPE\"] = 4] = \"EXPECT_ARGUMENT_TYPE\";\n /** Unsupported argument type (e.g. `{foo,foo}`) */\n ErrorKind[ErrorKind[\"INVALID_ARGUMENT_TYPE\"] = 5] = \"INVALID_ARGUMENT_TYPE\";\n /** Expect an argument style (e.g. `{foo, number, }`) */\n ErrorKind[ErrorKind[\"EXPECT_ARGUMENT_STYLE\"] = 6] = \"EXPECT_ARGUMENT_STYLE\";\n /** The number skeleton is invalid. */\n ErrorKind[ErrorKind[\"INVALID_NUMBER_SKELETON\"] = 7] = \"INVALID_NUMBER_SKELETON\";\n /** The date time skeleton is invalid. */\n ErrorKind[ErrorKind[\"INVALID_DATE_TIME_SKELETON\"] = 8] = \"INVALID_DATE_TIME_SKELETON\";\n /** Exepct a number skeleton following the `::` (e.g. `{foo, number, ::}`) */\n ErrorKind[ErrorKind[\"EXPECT_NUMBER_SKELETON\"] = 9] = \"EXPECT_NUMBER_SKELETON\";\n /** Exepct a date time skeleton following the `::` (e.g. `{foo, date, ::}`) */\n ErrorKind[ErrorKind[\"EXPECT_DATE_TIME_SKELETON\"] = 10] = \"EXPECT_DATE_TIME_SKELETON\";\n /** Unmatched apostrophes in the argument style (e.g. `{foo, number, 'test`) */\n ErrorKind[ErrorKind[\"UNCLOSED_QUOTE_IN_ARGUMENT_STYLE\"] = 11] = \"UNCLOSED_QUOTE_IN_ARGUMENT_STYLE\";\n /** Missing select argument options (e.g. `{foo, select}`) */\n ErrorKind[ErrorKind[\"EXPECT_SELECT_ARGUMENT_OPTIONS\"] = 12] = \"EXPECT_SELECT_ARGUMENT_OPTIONS\";\n /** Expecting an offset value in `plural` or `selectordinal` argument (e.g `{foo, plural, offset}`) */\n ErrorKind[ErrorKind[\"EXPECT_PLURAL_ARGUMENT_OFFSET_VALUE\"] = 13] = \"EXPECT_PLURAL_ARGUMENT_OFFSET_VALUE\";\n /** Offset value in `plural` or `selectordinal` is invalid (e.g. `{foo, plural, offset: x}`) */\n ErrorKind[ErrorKind[\"INVALID_PLURAL_ARGUMENT_OFFSET_VALUE\"] = 14] = \"INVALID_PLURAL_ARGUMENT_OFFSET_VALUE\";\n /** Expecting a selector in `select` argument (e.g `{foo, select}`) */\n ErrorKind[ErrorKind[\"EXPECT_SELECT_ARGUMENT_SELECTOR\"] = 15] = \"EXPECT_SELECT_ARGUMENT_SELECTOR\";\n /** Expecting a selector in `plural` or `selectordinal` argument (e.g `{foo, plural}`) */\n ErrorKind[ErrorKind[\"EXPECT_PLURAL_ARGUMENT_SELECTOR\"] = 16] = \"EXPECT_PLURAL_ARGUMENT_SELECTOR\";\n /** Expecting a message fragment after the `select` selector (e.g. `{foo, select, apple}`) */\n ErrorKind[ErrorKind[\"EXPECT_SELECT_ARGUMENT_SELECTOR_FRAGMENT\"] = 17] = \"EXPECT_SELECT_ARGUMENT_SELECTOR_FRAGMENT\";\n /**\n * Expecting a message fragment after the `plural` or `selectordinal` selector\n * (e.g. `{foo, plural, one}`)\n */\n ErrorKind[ErrorKind[\"EXPECT_PLURAL_ARGUMENT_SELECTOR_FRAGMENT\"] = 18] = \"EXPECT_PLURAL_ARGUMENT_SELECTOR_FRAGMENT\";\n /** Selector in `plural` or `selectordinal` is malformed (e.g. `{foo, plural, =x {#}}`) */\n ErrorKind[ErrorKind[\"INVALID_PLURAL_ARGUMENT_SELECTOR\"] = 19] = \"INVALID_PLURAL_ARGUMENT_SELECTOR\";\n /**\n * Duplicate selectors in `plural` or `selectordinal` argument.\n * (e.g. {foo, plural, one {#} one {#}})\n */\n ErrorKind[ErrorKind[\"DUPLICATE_PLURAL_ARGUMENT_SELECTOR\"] = 20] = \"DUPLICATE_PLURAL_ARGUMENT_SELECTOR\";\n /** Duplicate selectors in `select` argument.\n * (e.g. {foo, select, apple {apple} apple {apple}})\n */\n ErrorKind[ErrorKind[\"DUPLICATE_SELECT_ARGUMENT_SELECTOR\"] = 21] = \"DUPLICATE_SELECT_ARGUMENT_SELECTOR\";\n /** Plural or select argument option must have `other` clause. */\n ErrorKind[ErrorKind[\"MISSING_OTHER_CLAUSE\"] = 22] = \"MISSING_OTHER_CLAUSE\";\n /** The tag is malformed. (e.g. `foo ) */\n ErrorKind[ErrorKind[\"INVALID_TAG\"] = 23] = \"INVALID_TAG\";\n /** The tag name is invalid. (e.g. `<123>foo`) */\n ErrorKind[ErrorKind[\"INVALID_TAG_NAME\"] = 25] = \"INVALID_TAG_NAME\";\n /** The closing tag does not match the opening tag. (e.g. `foo`) */\n ErrorKind[ErrorKind[\"UNMATCHED_CLOSING_TAG\"] = 26] = \"UNMATCHED_CLOSING_TAG\";\n /** The opening tag has unmatched closing tag. (e.g. `foo`) */\n ErrorKind[ErrorKind[\"UNCLOSED_TAG\"] = 27] = \"UNCLOSED_TAG\";\n})(ErrorKind || (ErrorKind = {}));\n","export var TYPE;\n(function (TYPE) {\n /**\n * Raw text\n */\n TYPE[TYPE[\"literal\"] = 0] = \"literal\";\n /**\n * Variable w/o any format, e.g `var` in `this is a {var}`\n */\n TYPE[TYPE[\"argument\"] = 1] = \"argument\";\n /**\n * Variable w/ number format\n */\n TYPE[TYPE[\"number\"] = 2] = \"number\";\n /**\n * Variable w/ date format\n */\n TYPE[TYPE[\"date\"] = 3] = \"date\";\n /**\n * Variable w/ time format\n */\n TYPE[TYPE[\"time\"] = 4] = \"time\";\n /**\n * Variable w/ select format\n */\n TYPE[TYPE[\"select\"] = 5] = \"select\";\n /**\n * Variable w/ plural format\n */\n TYPE[TYPE[\"plural\"] = 6] = \"plural\";\n /**\n * Only possible within plural argument.\n * This is the `#` symbol that will be substituted with the count.\n */\n TYPE[TYPE[\"pound\"] = 7] = \"pound\";\n /**\n * XML-like tag\n */\n TYPE[TYPE[\"tag\"] = 8] = \"tag\";\n})(TYPE || (TYPE = {}));\nexport var SKELETON_TYPE;\n(function (SKELETON_TYPE) {\n SKELETON_TYPE[SKELETON_TYPE[\"number\"] = 0] = \"number\";\n SKELETON_TYPE[SKELETON_TYPE[\"dateTime\"] = 1] = \"dateTime\";\n})(SKELETON_TYPE || (SKELETON_TYPE = {}));\n/**\n * Type Guards\n */\nexport function isLiteralElement(el) {\n return el.type === TYPE.literal;\n}\nexport function isArgumentElement(el) {\n return el.type === TYPE.argument;\n}\nexport function isNumberElement(el) {\n return el.type === TYPE.number;\n}\nexport function isDateElement(el) {\n return el.type === TYPE.date;\n}\nexport function isTimeElement(el) {\n return el.type === TYPE.time;\n}\nexport function isSelectElement(el) {\n return el.type === TYPE.select;\n}\nexport function isPluralElement(el) {\n return el.type === TYPE.plural;\n}\nexport function isPoundElement(el) {\n return el.type === TYPE.pound;\n}\nexport function isTagElement(el) {\n return el.type === TYPE.tag;\n}\nexport function isNumberSkeleton(el) {\n return !!(el && typeof el === 'object' && el.type === SKELETON_TYPE.number);\n}\nexport function isDateTimeSkeleton(el) {\n return !!(el && typeof el === 'object' && el.type === SKELETON_TYPE.dateTime);\n}\nexport function createLiteralElement(value) {\n return {\n type: TYPE.literal,\n value: value,\n };\n}\nexport function createNumberElement(value, style) {\n return {\n type: TYPE.number,\n value: value,\n style: style,\n };\n}\n","// @generated from regex-gen.ts\nexport var SPACE_SEPARATOR_REGEX = /[ \\xA0\\u1680\\u2000-\\u200A\\u202F\\u205F\\u3000]/;\nexport var WHITE_SPACE_REGEX = /[\\t-\\r \\x85\\u200E\\u200F\\u2028\\u2029]/;\n","/**\n * https://unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table\n * Credit: https://github.com/caridy/intl-datetimeformat-pattern/blob/master/index.js\n * with some tweaks\n */\nvar DATE_TIME_REGEX = /(?:[Eec]{1,6}|G{1,5}|[Qq]{1,5}|(?:[yYur]+|U{1,5})|[ML]{1,5}|d{1,2}|D{1,3}|F{1}|[abB]{1,5}|[hkHK]{1,2}|w{1,2}|W{1}|m{1,2}|s{1,2}|[zZOvVxX]{1,4})(?=([^']*'[^']*')*[^']*$)/g;\n/**\n * Parse Date time skeleton into Intl.DateTimeFormatOptions\n * Ref: https://unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table\n * @public\n * @param skeleton skeleton string\n */\nexport function parseDateTimeSkeleton(skeleton) {\n var result = {};\n skeleton.replace(DATE_TIME_REGEX, function (match) {\n var len = match.length;\n switch (match[0]) {\n // Era\n case 'G':\n result.era = len === 4 ? 'long' : len === 5 ? 'narrow' : 'short';\n break;\n // Year\n case 'y':\n result.year = len === 2 ? '2-digit' : 'numeric';\n break;\n case 'Y':\n case 'u':\n case 'U':\n case 'r':\n throw new RangeError('`Y/u/U/r` (year) patterns are not supported, use `y` instead');\n // Quarter\n case 'q':\n case 'Q':\n throw new RangeError('`q/Q` (quarter) patterns are not supported');\n // Month\n case 'M':\n case 'L':\n result.month = ['numeric', '2-digit', 'short', 'long', 'narrow'][len - 1];\n break;\n // Week\n case 'w':\n case 'W':\n throw new RangeError('`w/W` (week) patterns are not supported');\n case 'd':\n result.day = ['numeric', '2-digit'][len - 1];\n break;\n case 'D':\n case 'F':\n case 'g':\n throw new RangeError('`D/F/g` (day) patterns are not supported, use `d` instead');\n // Weekday\n case 'E':\n result.weekday = len === 4 ? 'short' : len === 5 ? 'narrow' : 'short';\n break;\n case 'e':\n if (len < 4) {\n throw new RangeError('`e..eee` (weekday) patterns are not supported');\n }\n result.weekday = ['short', 'long', 'narrow', 'short'][len - 4];\n break;\n case 'c':\n if (len < 4) {\n throw new RangeError('`c..ccc` (weekday) patterns are not supported');\n }\n result.weekday = ['short', 'long', 'narrow', 'short'][len - 4];\n break;\n // Period\n case 'a': // AM, PM\n result.hour12 = true;\n break;\n case 'b': // am, pm, noon, midnight\n case 'B': // flexible day periods\n throw new RangeError('`b/B` (period) patterns are not supported, use `a` instead');\n // Hour\n case 'h':\n result.hourCycle = 'h12';\n result.hour = ['numeric', '2-digit'][len - 1];\n break;\n case 'H':\n result.hourCycle = 'h23';\n result.hour = ['numeric', '2-digit'][len - 1];\n break;\n case 'K':\n result.hourCycle = 'h11';\n result.hour = ['numeric', '2-digit'][len - 1];\n break;\n case 'k':\n result.hourCycle = 'h24';\n result.hour = ['numeric', '2-digit'][len - 1];\n break;\n case 'j':\n case 'J':\n case 'C':\n throw new RangeError('`j/J/C` (hour) patterns are not supported, use `h/H/K/k` instead');\n // Minute\n case 'm':\n result.minute = ['numeric', '2-digit'][len - 1];\n break;\n // Second\n case 's':\n result.second = ['numeric', '2-digit'][len - 1];\n break;\n case 'S':\n case 'A':\n throw new RangeError('`S/A` (second) patterns are not supported, use `s` instead');\n // Zone\n case 'z': // 1..3, 4: specific non-location format\n result.timeZoneName = len < 4 ? 'short' : 'long';\n break;\n case 'Z': // 1..3, 4, 5: The ISO8601 varios formats\n case 'O': // 1, 4: miliseconds in day short, long\n case 'v': // 1, 4: generic non-location format\n case 'V': // 1, 2, 3, 4: time zone ID or city\n case 'X': // 1, 2, 3, 4: The ISO8601 varios formats\n case 'x': // 1, 2, 3, 4: The ISO8601 varios formats\n throw new RangeError('`Z/O/v/V/X/x` (timeZone) patterns are not supported, use `z` instead');\n }\n return '';\n });\n return result;\n}\n","// @generated from regex-gen.ts\nexport var WHITE_SPACE_REGEX = /[\\t-\\r \\x85\\u200E\\u200F\\u2028\\u2029]/i;\n","import { __assign } from \"tslib\";\nimport { WHITE_SPACE_REGEX } from './regex.generated';\nexport function parseNumberSkeletonFromString(skeleton) {\n if (skeleton.length === 0) {\n throw new Error('Number skeleton cannot be empty');\n }\n // Parse the skeleton\n var stringTokens = skeleton\n .split(WHITE_SPACE_REGEX)\n .filter(function (x) { return x.length > 0; });\n var tokens = [];\n for (var _i = 0, stringTokens_1 = stringTokens; _i < stringTokens_1.length; _i++) {\n var stringToken = stringTokens_1[_i];\n var stemAndOptions = stringToken.split('/');\n if (stemAndOptions.length === 0) {\n throw new Error('Invalid number skeleton');\n }\n var stem = stemAndOptions[0], options = stemAndOptions.slice(1);\n for (var _a = 0, options_1 = options; _a < options_1.length; _a++) {\n var option = options_1[_a];\n if (option.length === 0) {\n throw new Error('Invalid number skeleton');\n }\n }\n tokens.push({ stem: stem, options: options });\n }\n return tokens;\n}\nfunction icuUnitToEcma(unit) {\n return unit.replace(/^(.*?)-/, '');\n}\nvar FRACTION_PRECISION_REGEX = /^\\.(?:(0+)(\\*)?|(#+)|(0+)(#+))$/g;\nvar SIGNIFICANT_PRECISION_REGEX = /^(@+)?(\\+|#+)?[rs]?$/g;\nvar INTEGER_WIDTH_REGEX = /(\\*)(0+)|(#+)(0+)|(0+)/g;\nvar CONCISE_INTEGER_WIDTH_REGEX = /^(0+)$/;\nfunction parseSignificantPrecision(str) {\n var result = {};\n if (str[str.length - 1] === 'r') {\n result.roundingPriority = 'morePrecision';\n }\n else if (str[str.length - 1] === 's') {\n result.roundingPriority = 'lessPrecision';\n }\n str.replace(SIGNIFICANT_PRECISION_REGEX, function (_, g1, g2) {\n // @@@ case\n if (typeof g2 !== 'string') {\n result.minimumSignificantDigits = g1.length;\n result.maximumSignificantDigits = g1.length;\n }\n // @@@+ case\n else if (g2 === '+') {\n result.minimumSignificantDigits = g1.length;\n }\n // .### case\n else if (g1[0] === '#') {\n result.maximumSignificantDigits = g1.length;\n }\n // .@@## or .@@@ case\n else {\n result.minimumSignificantDigits = g1.length;\n result.maximumSignificantDigits =\n g1.length + (typeof g2 === 'string' ? g2.length : 0);\n }\n return '';\n });\n return result;\n}\nfunction parseSign(str) {\n switch (str) {\n case 'sign-auto':\n return {\n signDisplay: 'auto',\n };\n case 'sign-accounting':\n case '()':\n return {\n currencySign: 'accounting',\n };\n case 'sign-always':\n case '+!':\n return {\n signDisplay: 'always',\n };\n case 'sign-accounting-always':\n case '()!':\n return {\n signDisplay: 'always',\n currencySign: 'accounting',\n };\n case 'sign-except-zero':\n case '+?':\n return {\n signDisplay: 'exceptZero',\n };\n case 'sign-accounting-except-zero':\n case '()?':\n return {\n signDisplay: 'exceptZero',\n currencySign: 'accounting',\n };\n case 'sign-never':\n case '+_':\n return {\n signDisplay: 'never',\n };\n }\n}\nfunction parseConciseScientificAndEngineeringStem(stem) {\n // Engineering\n var result;\n if (stem[0] === 'E' && stem[1] === 'E') {\n result = {\n notation: 'engineering',\n };\n stem = stem.slice(2);\n }\n else if (stem[0] === 'E') {\n result = {\n notation: 'scientific',\n };\n stem = stem.slice(1);\n }\n if (result) {\n var signDisplay = stem.slice(0, 2);\n if (signDisplay === '+!') {\n result.signDisplay = 'always';\n stem = stem.slice(2);\n }\n else if (signDisplay === '+?') {\n result.signDisplay = 'exceptZero';\n stem = stem.slice(2);\n }\n if (!CONCISE_INTEGER_WIDTH_REGEX.test(stem)) {\n throw new Error('Malformed concise eng/scientific notation');\n }\n result.minimumIntegerDigits = stem.length;\n }\n return result;\n}\nfunction parseNotationOptions(opt) {\n var result = {};\n var signOpts = parseSign(opt);\n if (signOpts) {\n return signOpts;\n }\n return result;\n}\n/**\n * https://github.com/unicode-org/icu/blob/master/docs/userguide/format_parse/numbers/skeletons.md#skeleton-stems-and-options\n */\nexport function parseNumberSkeleton(tokens) {\n var result = {};\n for (var _i = 0, tokens_1 = tokens; _i < tokens_1.length; _i++) {\n var token = tokens_1[_i];\n switch (token.stem) {\n case 'percent':\n case '%':\n result.style = 'percent';\n continue;\n case '%x100':\n result.style = 'percent';\n result.scale = 100;\n continue;\n case 'currency':\n result.style = 'currency';\n result.currency = token.options[0];\n continue;\n case 'group-off':\n case ',_':\n result.useGrouping = false;\n continue;\n case 'precision-integer':\n case '.':\n result.maximumFractionDigits = 0;\n continue;\n case 'measure-unit':\n case 'unit':\n result.style = 'unit';\n result.unit = icuUnitToEcma(token.options[0]);\n continue;\n case 'compact-short':\n case 'K':\n result.notation = 'compact';\n result.compactDisplay = 'short';\n continue;\n case 'compact-long':\n case 'KK':\n result.notation = 'compact';\n result.compactDisplay = 'long';\n continue;\n case 'scientific':\n result = __assign(__assign(__assign({}, result), { notation: 'scientific' }), token.options.reduce(function (all, opt) { return (__assign(__assign({}, all), parseNotationOptions(opt))); }, {}));\n continue;\n case 'engineering':\n result = __assign(__assign(__assign({}, result), { notation: 'engineering' }), token.options.reduce(function (all, opt) { return (__assign(__assign({}, all), parseNotationOptions(opt))); }, {}));\n continue;\n case 'notation-simple':\n result.notation = 'standard';\n continue;\n // https://github.com/unicode-org/icu/blob/master/icu4c/source/i18n/unicode/unumberformatter.h\n case 'unit-width-narrow':\n result.currencyDisplay = 'narrowSymbol';\n result.unitDisplay = 'narrow';\n continue;\n case 'unit-width-short':\n result.currencyDisplay = 'code';\n result.unitDisplay = 'short';\n continue;\n case 'unit-width-full-name':\n result.currencyDisplay = 'name';\n result.unitDisplay = 'long';\n continue;\n case 'unit-width-iso-code':\n result.currencyDisplay = 'symbol';\n continue;\n case 'scale':\n result.scale = parseFloat(token.options[0]);\n continue;\n // https://unicode-org.github.io/icu/userguide/format_parse/numbers/skeletons.html#integer-width\n case 'integer-width':\n if (token.options.length > 1) {\n throw new RangeError('integer-width stems only accept a single optional option');\n }\n token.options[0].replace(INTEGER_WIDTH_REGEX, function (_, g1, g2, g3, g4, g5) {\n if (g1) {\n result.minimumIntegerDigits = g2.length;\n }\n else if (g3 && g4) {\n throw new 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\"hb\",\n \"H\"\n ],\n \"YE\": [\n \"h\",\n \"hB\",\n \"hb\",\n \"H\"\n ],\n \"AF\": [\n \"H\",\n \"hb\",\n \"hB\",\n \"h\"\n ],\n \"LA\": [\n \"H\",\n \"hb\",\n \"hB\",\n \"h\"\n ],\n \"CN\": [\n \"H\",\n \"hB\",\n \"hb\",\n \"h\"\n ],\n \"LV\": [\n \"H\",\n \"hB\",\n \"hb\",\n \"h\"\n ],\n \"TL\": [\n \"H\",\n \"hB\",\n \"hb\",\n \"h\"\n ],\n \"zu-ZA\": [\n \"H\",\n \"hB\",\n \"hb\",\n \"h\"\n ],\n \"CD\": [\n \"hB\",\n \"H\"\n ],\n \"IR\": [\n \"hB\",\n \"H\"\n ],\n \"hi-IN\": [\n \"hB\",\n \"h\",\n \"H\"\n ],\n \"kn-IN\": [\n \"hB\",\n \"h\",\n \"H\"\n ],\n \"ml-IN\": [\n \"hB\",\n \"h\",\n \"H\"\n ],\n \"te-IN\": [\n \"hB\",\n \"h\",\n \"H\"\n ],\n \"KH\": [\n \"hB\",\n \"h\",\n \"H\",\n \"hb\"\n ],\n \"ta-IN\": [\n \"hB\",\n \"h\",\n \"hb\",\n \"H\"\n ],\n \"BN\": [\n \"hb\",\n \"hB\",\n \"h\",\n \"H\"\n ],\n \"MY\": [\n \"hb\",\n \"hB\",\n \"h\",\n \"H\"\n ],\n \"ET\": [\n \"hB\",\n \"hb\",\n \"h\",\n \"H\"\n ],\n \"gu-IN\": [\n \"hB\",\n \"hb\",\n \"h\",\n \"H\"\n ],\n \"mr-IN\": [\n \"hB\",\n \"hb\",\n \"h\",\n \"H\"\n ],\n \"pa-IN\": [\n \"hB\",\n \"hb\",\n \"h\",\n \"H\"\n ],\n \"TW\": [\n \"hB\",\n \"hb\",\n \"h\",\n \"H\"\n ],\n \"KE\": [\n \"hB\",\n \"hb\",\n \"H\",\n \"h\"\n ],\n \"MM\": [\n \"hB\",\n \"hb\",\n \"H\",\n \"h\"\n ],\n \"TZ\": [\n \"hB\",\n \"hb\",\n \"H\",\n \"h\"\n ],\n \"UG\": [\n \"hB\",\n \"hb\",\n \"H\",\n \"h\"\n ]\n};\n","var _a;\nimport { __assign } from \"tslib\";\nimport { ErrorKind } from './error';\nimport { SKELETON_TYPE, TYPE, } from './types';\nimport { SPACE_SEPARATOR_REGEX } from './regex.generated';\nimport { parseNumberSkeleton, parseNumberSkeletonFromString, parseDateTimeSkeleton, } from '@formatjs/icu-skeleton-parser';\nimport { getBestPattern } from './date-time-pattern-generator';\nvar SPACE_SEPARATOR_START_REGEX = new RegExp(\"^\".concat(SPACE_SEPARATOR_REGEX.source, \"*\"));\nvar SPACE_SEPARATOR_END_REGEX = new RegExp(\"\".concat(SPACE_SEPARATOR_REGEX.source, \"*$\"));\nfunction createLocation(start, end) {\n return { start: start, end: end };\n}\n// #region Ponyfills\n// Consolidate these variables up top for easier toggling during debugging\nvar hasNativeStartsWith = !!String.prototype.startsWith;\nvar hasNativeFromCodePoint = !!String.fromCodePoint;\nvar hasNativeFromEntries = !!Object.fromEntries;\nvar hasNativeCodePointAt = !!String.prototype.codePointAt;\nvar hasTrimStart = !!String.prototype.trimStart;\nvar hasTrimEnd = !!String.prototype.trimEnd;\nvar hasNativeIsSafeInteger = !!Number.isSafeInteger;\nvar isSafeInteger = hasNativeIsSafeInteger\n ? Number.isSafeInteger\n : function (n) {\n return (typeof n === 'number' &&\n isFinite(n) &&\n Math.floor(n) === n &&\n Math.abs(n) <= 0x1fffffffffffff);\n };\n// IE11 does not support y and u.\nvar REGEX_SUPPORTS_U_AND_Y = true;\ntry {\n var re = RE('([^\\\\p{White_Space}\\\\p{Pattern_Syntax}]*)', 'yu');\n /**\n * legacy Edge or Xbox One browser\n * Unicode flag support: supported\n * Pattern_Syntax support: not supported\n * See https://github.com/formatjs/formatjs/issues/2822\n */\n REGEX_SUPPORTS_U_AND_Y = ((_a = re.exec('a')) === null || _a === void 0 ? void 0 : _a[0]) === 'a';\n}\ncatch (_) {\n REGEX_SUPPORTS_U_AND_Y = false;\n}\nvar startsWith = hasNativeStartsWith\n ? // Native\n function startsWith(s, search, position) {\n return s.startsWith(search, position);\n }\n : // For IE11\n function startsWith(s, search, position) {\n return s.slice(position, position + search.length) === search;\n };\nvar fromCodePoint = hasNativeFromCodePoint\n ? String.fromCodePoint\n : // IE11\n function fromCodePoint() {\n var codePoints = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n codePoints[_i] = arguments[_i];\n }\n var elements = '';\n var length = codePoints.length;\n var i = 0;\n var code;\n while (length > i) {\n code = codePoints[i++];\n if (code > 0x10ffff)\n throw RangeError(code + ' is not a valid code point');\n elements +=\n code < 0x10000\n ? String.fromCharCode(code)\n : String.fromCharCode(((code -= 0x10000) >> 10) + 0xd800, (code % 0x400) + 0xdc00);\n }\n return elements;\n };\nvar fromEntries = \n// native\nhasNativeFromEntries\n ? Object.fromEntries\n : // Ponyfill\n function fromEntries(entries) {\n var obj = {};\n for (var _i = 0, entries_1 = entries; _i < entries_1.length; _i++) {\n var _a = entries_1[_i], k = _a[0], v = _a[1];\n obj[k] = v;\n }\n return obj;\n };\nvar codePointAt = hasNativeCodePointAt\n ? // Native\n function codePointAt(s, index) {\n return s.codePointAt(index);\n }\n : // IE 11\n function codePointAt(s, index) {\n var size = s.length;\n if (index < 0 || index >= size) {\n return undefined;\n }\n var first = s.charCodeAt(index);\n var second;\n return first < 0xd800 ||\n first > 0xdbff ||\n index + 1 === size ||\n (second = s.charCodeAt(index + 1)) < 0xdc00 ||\n second > 0xdfff\n ? first\n : ((first - 0xd800) << 10) + (second - 0xdc00) + 0x10000;\n };\nvar trimStart = hasTrimStart\n ? // Native\n function trimStart(s) {\n return s.trimStart();\n }\n : // Ponyfill\n function trimStart(s) {\n return s.replace(SPACE_SEPARATOR_START_REGEX, '');\n };\nvar trimEnd = hasTrimEnd\n ? // Native\n function trimEnd(s) {\n return s.trimEnd();\n }\n : // Ponyfill\n function trimEnd(s) {\n return s.replace(SPACE_SEPARATOR_END_REGEX, '');\n };\n// Prevent minifier to translate new RegExp to literal form that might cause syntax error on IE11.\nfunction RE(s, flag) {\n return new RegExp(s, flag);\n}\n// #endregion\nvar matchIdentifierAtIndex;\nif (REGEX_SUPPORTS_U_AND_Y) {\n // Native\n var IDENTIFIER_PREFIX_RE_1 = RE('([^\\\\p{White_Space}\\\\p{Pattern_Syntax}]*)', 'yu');\n matchIdentifierAtIndex = function matchIdentifierAtIndex(s, index) {\n var _a;\n IDENTIFIER_PREFIX_RE_1.lastIndex = index;\n var match = IDENTIFIER_PREFIX_RE_1.exec(s);\n return (_a = match[1]) !== null && _a !== void 0 ? _a : '';\n };\n}\nelse {\n // IE11\n matchIdentifierAtIndex = function matchIdentifierAtIndex(s, index) {\n var match = [];\n while (true) {\n var c = codePointAt(s, index);\n if (c === undefined || _isWhiteSpace(c) || _isPatternSyntax(c)) {\n break;\n }\n match.push(c);\n index += c >= 0x10000 ? 2 : 1;\n }\n return fromCodePoint.apply(void 0, match);\n };\n}\nvar Parser = /** @class */ (function () {\n function Parser(message, options) {\n if (options === void 0) { options = {}; }\n this.message = message;\n this.position = { offset: 0, line: 1, column: 1 };\n this.ignoreTag = !!options.ignoreTag;\n this.locale = options.locale;\n this.requiresOtherClause = !!options.requiresOtherClause;\n this.shouldParseSkeletons = !!options.shouldParseSkeletons;\n }\n Parser.prototype.parse = function () {\n if (this.offset() !== 0) {\n throw Error('parser can only be used once');\n }\n return this.parseMessage(0, '', false);\n };\n Parser.prototype.parseMessage = function (nestingLevel, parentArgType, expectingCloseTag) {\n var elements = [];\n while (!this.isEOF()) {\n var char = this.char();\n if (char === 123 /* `{` */) {\n var result = this.parseArgument(nestingLevel, expectingCloseTag);\n if (result.err) {\n return result;\n }\n elements.push(result.val);\n }\n else if (char === 125 /* `}` */ && nestingLevel > 0) {\n break;\n }\n else if (char === 35 /* `#` */ &&\n (parentArgType === 'plural' || parentArgType === 'selectordinal')) {\n var position = this.clonePosition();\n this.bump();\n elements.push({\n type: TYPE.pound,\n location: createLocation(position, this.clonePosition()),\n });\n }\n else if (char === 60 /* `<` */ &&\n !this.ignoreTag &&\n this.peek() === 47 // char code for '/'\n ) {\n if (expectingCloseTag) {\n break;\n }\n else {\n return this.error(ErrorKind.UNMATCHED_CLOSING_TAG, createLocation(this.clonePosition(), this.clonePosition()));\n }\n }\n else if (char === 60 /* `<` */ &&\n !this.ignoreTag &&\n _isAlpha(this.peek() || 0)) {\n var result = this.parseTag(nestingLevel, parentArgType);\n if (result.err) {\n return result;\n }\n elements.push(result.val);\n }\n else {\n var result = this.parseLiteral(nestingLevel, parentArgType);\n if (result.err) {\n return result;\n }\n elements.push(result.val);\n }\n }\n return { val: elements, err: null };\n };\n /**\n * A tag name must start with an ASCII lower/upper case letter. The grammar is based on the\n * [custom element name][] except that a dash is NOT always mandatory and uppercase letters\n * are accepted:\n *\n * ```\n * tag ::= \"<\" tagName (whitespace)* \"/>\" | \"<\" tagName (whitespace)* \">\" message \"\"\n * tagName ::= [a-z] (PENChar)*\n * PENChar ::=\n * \"-\" | \".\" | [0-9] | \"_\" | [a-z] | [A-Z] | #xB7 | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x37D] |\n * [#x37F-#x1FFF] | [#x200C-#x200D] | [#x203F-#x2040] | [#x2070-#x218F] | [#x2C00-#x2FEF] |\n * [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]\n * ```\n *\n * [custom element name]: https://html.spec.whatwg.org/multipage/custom-elements.html#valid-custom-element-name\n * NOTE: We're a bit more lax here since HTML technically does not allow uppercase HTML element but we do\n * since other tag-based engines like React allow it\n */\n Parser.prototype.parseTag = function (nestingLevel, parentArgType) {\n var startPosition = this.clonePosition();\n this.bump(); // `<`\n var tagName = this.parseTagName();\n this.bumpSpace();\n if (this.bumpIf('/>')) {\n // Self closing tag\n return {\n val: {\n type: TYPE.literal,\n value: \"<\".concat(tagName, \"/>\"),\n location: createLocation(startPosition, this.clonePosition()),\n },\n err: null,\n };\n }\n else if (this.bumpIf('>')) {\n var childrenResult = this.parseMessage(nestingLevel + 1, parentArgType, true);\n if (childrenResult.err) {\n return childrenResult;\n }\n var children = childrenResult.val;\n // Expecting a close tag\n var endTagStartPosition = this.clonePosition();\n if (this.bumpIf('')) {\n return this.error(ErrorKind.INVALID_TAG, createLocation(endTagStartPosition, this.clonePosition()));\n }\n return {\n val: {\n type: TYPE.tag,\n value: tagName,\n children: children,\n location: createLocation(startPosition, this.clonePosition()),\n },\n err: null,\n };\n }\n else {\n return this.error(ErrorKind.UNCLOSED_TAG, createLocation(startPosition, this.clonePosition()));\n }\n }\n else {\n return this.error(ErrorKind.INVALID_TAG, createLocation(startPosition, this.clonePosition()));\n }\n };\n /**\n * This method assumes that the caller has peeked ahead for the first tag character.\n */\n Parser.prototype.parseTagName = function () {\n var startOffset = this.offset();\n this.bump(); // the first tag name character\n while (!this.isEOF() && _isPotentialElementNameChar(this.char())) {\n this.bump();\n }\n return this.message.slice(startOffset, this.offset());\n };\n Parser.prototype.parseLiteral = function (nestingLevel, parentArgType) {\n var start = this.clonePosition();\n var value = '';\n while (true) {\n var parseQuoteResult = this.tryParseQuote(parentArgType);\n if (parseQuoteResult) {\n value += parseQuoteResult;\n continue;\n }\n var parseUnquotedResult = this.tryParseUnquoted(nestingLevel, parentArgType);\n if (parseUnquotedResult) {\n value += parseUnquotedResult;\n continue;\n }\n var parseLeftAngleResult = this.tryParseLeftAngleBracket();\n if (parseLeftAngleResult) {\n value += parseLeftAngleResult;\n continue;\n }\n break;\n }\n var location = createLocation(start, this.clonePosition());\n return {\n val: { type: TYPE.literal, value: value, location: location },\n err: null,\n };\n };\n Parser.prototype.tryParseLeftAngleBracket = function () {\n if (!this.isEOF() &&\n this.char() === 60 /* `<` */ &&\n (this.ignoreTag ||\n // If at the opening tag or closing tag position, bail.\n !_isAlphaOrSlash(this.peek() || 0))) {\n this.bump(); // `<`\n return '<';\n }\n return null;\n };\n /**\n * Starting with ICU 4.8, an ASCII apostrophe only starts quoted text if it immediately precedes\n * a character that requires quoting (that is, \"only where needed\"), and works the same in\n * nested messages as on the top level of the pattern. The new behavior is otherwise compatible.\n */\n Parser.prototype.tryParseQuote = function (parentArgType) {\n if (this.isEOF() || this.char() !== 39 /* `'` */) {\n return null;\n }\n // Parse escaped char following the apostrophe, or early return if there is no escaped char.\n // Check if is valid escaped character\n switch (this.peek()) {\n case 39 /* `'` */:\n // double quote, should return as a single quote.\n this.bump();\n this.bump();\n return \"'\";\n // '{', '<', '>', '}'\n case 123:\n case 60:\n case 62:\n case 125:\n break;\n case 35: // '#'\n if (parentArgType === 'plural' || parentArgType === 'selectordinal') {\n break;\n }\n return null;\n default:\n return null;\n }\n this.bump(); // apostrophe\n var codePoints = [this.char()]; // escaped char\n this.bump();\n // read chars until the optional closing apostrophe is found\n while (!this.isEOF()) {\n var ch = this.char();\n if (ch === 39 /* `'` */) {\n if (this.peek() === 39 /* `'` */) {\n codePoints.push(39);\n // Bump one more time because we need to skip 2 characters.\n this.bump();\n }\n else {\n // Optional closing apostrophe.\n this.bump();\n break;\n }\n }\n else {\n codePoints.push(ch);\n }\n this.bump();\n }\n return fromCodePoint.apply(void 0, codePoints);\n };\n Parser.prototype.tryParseUnquoted = function (nestingLevel, parentArgType) {\n if (this.isEOF()) {\n return null;\n }\n var ch = this.char();\n if (ch === 60 /* `<` */ ||\n ch === 123 /* `{` */ ||\n (ch === 35 /* `#` */ &&\n (parentArgType === 'plural' || parentArgType === 'selectordinal')) ||\n (ch === 125 /* `}` */ && nestingLevel > 0)) {\n return null;\n }\n else {\n this.bump();\n return fromCodePoint(ch);\n }\n };\n Parser.prototype.parseArgument = function (nestingLevel, expectingCloseTag) {\n var openingBracePosition = this.clonePosition();\n this.bump(); // `{`\n this.bumpSpace();\n if (this.isEOF()) {\n return this.error(ErrorKind.EXPECT_ARGUMENT_CLOSING_BRACE, createLocation(openingBracePosition, this.clonePosition()));\n }\n if (this.char() === 125 /* `}` */) {\n this.bump();\n return this.error(ErrorKind.EMPTY_ARGUMENT, createLocation(openingBracePosition, this.clonePosition()));\n }\n // argument name\n var value = this.parseIdentifierIfPossible().value;\n if (!value) {\n return this.error(ErrorKind.MALFORMED_ARGUMENT, createLocation(openingBracePosition, this.clonePosition()));\n }\n this.bumpSpace();\n if (this.isEOF()) {\n return this.error(ErrorKind.EXPECT_ARGUMENT_CLOSING_BRACE, createLocation(openingBracePosition, this.clonePosition()));\n }\n switch (this.char()) {\n // Simple argument: `{name}`\n case 125 /* `}` */: {\n this.bump(); // `}`\n return {\n val: {\n type: TYPE.argument,\n // value does not include the opening and closing braces.\n value: value,\n location: createLocation(openingBracePosition, this.clonePosition()),\n },\n err: null,\n };\n }\n // Argument with options: `{name, format, ...}`\n case 44 /* `,` */: {\n this.bump(); // `,`\n this.bumpSpace();\n if (this.isEOF()) {\n return this.error(ErrorKind.EXPECT_ARGUMENT_CLOSING_BRACE, createLocation(openingBracePosition, this.clonePosition()));\n }\n return this.parseArgumentOptions(nestingLevel, expectingCloseTag, value, openingBracePosition);\n }\n default:\n return this.error(ErrorKind.MALFORMED_ARGUMENT, createLocation(openingBracePosition, this.clonePosition()));\n }\n };\n /**\n * Advance the parser until the end of the identifier, if it is currently on\n * an identifier character. Return an empty string otherwise.\n */\n Parser.prototype.parseIdentifierIfPossible = function () {\n var startingPosition = this.clonePosition();\n var startOffset = this.offset();\n var value = matchIdentifierAtIndex(this.message, startOffset);\n var endOffset = startOffset + value.length;\n this.bumpTo(endOffset);\n var endPosition = this.clonePosition();\n var location = createLocation(startingPosition, endPosition);\n return { value: value, location: location };\n };\n Parser.prototype.parseArgumentOptions = function (nestingLevel, expectingCloseTag, value, openingBracePosition) {\n var _a;\n // Parse this range:\n // {name, type, style}\n // ^---^\n var typeStartPosition = this.clonePosition();\n var argType = this.parseIdentifierIfPossible().value;\n var typeEndPosition = this.clonePosition();\n switch (argType) {\n case '':\n // Expecting a style string number, date, time, plural, selectordinal, or select.\n return this.error(ErrorKind.EXPECT_ARGUMENT_TYPE, createLocation(typeStartPosition, typeEndPosition));\n case 'number':\n case 'date':\n case 'time': {\n // Parse this range:\n // {name, number, style}\n // ^-------^\n this.bumpSpace();\n var styleAndLocation = null;\n if (this.bumpIf(',')) {\n this.bumpSpace();\n var styleStartPosition = this.clonePosition();\n var result = this.parseSimpleArgStyleIfPossible();\n if (result.err) {\n return result;\n }\n var style = trimEnd(result.val);\n if (style.length === 0) {\n return this.error(ErrorKind.EXPECT_ARGUMENT_STYLE, createLocation(this.clonePosition(), this.clonePosition()));\n }\n var styleLocation = createLocation(styleStartPosition, this.clonePosition());\n styleAndLocation = { style: style, styleLocation: styleLocation };\n }\n var argCloseResult = this.tryParseArgumentClose(openingBracePosition);\n if (argCloseResult.err) {\n return argCloseResult;\n }\n var location_1 = createLocation(openingBracePosition, this.clonePosition());\n // Extract style or skeleton\n if (styleAndLocation && startsWith(styleAndLocation === null || styleAndLocation === void 0 ? void 0 : styleAndLocation.style, '::', 0)) {\n // Skeleton starts with `::`.\n var skeleton = trimStart(styleAndLocation.style.slice(2));\n if (argType === 'number') {\n var result = this.parseNumberSkeletonFromString(skeleton, styleAndLocation.styleLocation);\n if (result.err) {\n return result;\n }\n return {\n val: { type: TYPE.number, value: value, location: location_1, style: result.val },\n err: null,\n };\n }\n else {\n if (skeleton.length === 0) {\n return this.error(ErrorKind.EXPECT_DATE_TIME_SKELETON, location_1);\n }\n var dateTimePattern = skeleton;\n // Get \"best match\" pattern only if locale is passed, if not, let it\n // pass as-is where `parseDateTimeSkeleton()` will throw an error\n // for unsupported patterns.\n if (this.locale) {\n dateTimePattern = getBestPattern(skeleton, this.locale);\n }\n var style = {\n type: SKELETON_TYPE.dateTime,\n pattern: dateTimePattern,\n location: styleAndLocation.styleLocation,\n parsedOptions: this.shouldParseSkeletons\n ? parseDateTimeSkeleton(dateTimePattern)\n : {},\n };\n var type = argType === 'date' ? TYPE.date : TYPE.time;\n return {\n val: { type: type, value: value, location: location_1, style: style },\n err: null,\n };\n }\n }\n // Regular style or no style.\n return {\n val: {\n type: argType === 'number'\n ? TYPE.number\n : argType === 'date'\n ? TYPE.date\n : TYPE.time,\n value: value,\n location: location_1,\n style: (_a = styleAndLocation === null || styleAndLocation === void 0 ? void 0 : styleAndLocation.style) !== null && _a !== void 0 ? _a : null,\n },\n err: null,\n };\n }\n case 'plural':\n case 'selectordinal':\n case 'select': {\n // Parse this range:\n // {name, plural, options}\n // ^---------^\n var typeEndPosition_1 = this.clonePosition();\n this.bumpSpace();\n if (!this.bumpIf(',')) {\n return this.error(ErrorKind.EXPECT_SELECT_ARGUMENT_OPTIONS, createLocation(typeEndPosition_1, __assign({}, typeEndPosition_1)));\n }\n this.bumpSpace();\n // Parse offset:\n // {name, plural, offset:1, options}\n // ^-----^\n //\n // or the first option:\n //\n // {name, plural, one {...} other {...}}\n // ^--^\n var identifierAndLocation = this.parseIdentifierIfPossible();\n var pluralOffset = 0;\n if (argType !== 'select' && identifierAndLocation.value === 'offset') {\n if (!this.bumpIf(':')) {\n return this.error(ErrorKind.EXPECT_PLURAL_ARGUMENT_OFFSET_VALUE, createLocation(this.clonePosition(), this.clonePosition()));\n }\n this.bumpSpace();\n var result = this.tryParseDecimalInteger(ErrorKind.EXPECT_PLURAL_ARGUMENT_OFFSET_VALUE, ErrorKind.INVALID_PLURAL_ARGUMENT_OFFSET_VALUE);\n if (result.err) {\n return result;\n }\n // Parse another identifier for option parsing\n this.bumpSpace();\n identifierAndLocation = this.parseIdentifierIfPossible();\n pluralOffset = result.val;\n }\n var optionsResult = this.tryParsePluralOrSelectOptions(nestingLevel, argType, expectingCloseTag, identifierAndLocation);\n if (optionsResult.err) {\n return optionsResult;\n }\n var argCloseResult = this.tryParseArgumentClose(openingBracePosition);\n if (argCloseResult.err) {\n return argCloseResult;\n }\n var location_2 = createLocation(openingBracePosition, this.clonePosition());\n if (argType === 'select') {\n return {\n val: {\n type: TYPE.select,\n value: value,\n options: fromEntries(optionsResult.val),\n location: location_2,\n },\n err: null,\n };\n }\n else {\n return {\n val: {\n type: TYPE.plural,\n value: value,\n options: fromEntries(optionsResult.val),\n offset: pluralOffset,\n pluralType: argType === 'plural' ? 'cardinal' : 'ordinal',\n location: location_2,\n },\n err: null,\n };\n }\n }\n default:\n return this.error(ErrorKind.INVALID_ARGUMENT_TYPE, createLocation(typeStartPosition, typeEndPosition));\n }\n };\n Parser.prototype.tryParseArgumentClose = function (openingBracePosition) {\n // Parse: {value, number, ::currency/GBP }\n //\n if (this.isEOF() || this.char() !== 125 /* `}` */) {\n return this.error(ErrorKind.EXPECT_ARGUMENT_CLOSING_BRACE, createLocation(openingBracePosition, this.clonePosition()));\n }\n this.bump(); // `}`\n return { val: true, err: null };\n };\n /**\n * See: https://github.com/unicode-org/icu/blob/af7ed1f6d2298013dc303628438ec4abe1f16479/icu4c/source/common/messagepattern.cpp#L659\n */\n Parser.prototype.parseSimpleArgStyleIfPossible = function () {\n var nestedBraces = 0;\n var startPosition = this.clonePosition();\n while (!this.isEOF()) {\n var ch = this.char();\n switch (ch) {\n case 39 /* `'` */: {\n // Treat apostrophe as quoting but include it in the style part.\n // Find the end of the quoted literal text.\n this.bump();\n var apostrophePosition = this.clonePosition();\n if (!this.bumpUntil(\"'\")) {\n return this.error(ErrorKind.UNCLOSED_QUOTE_IN_ARGUMENT_STYLE, createLocation(apostrophePosition, this.clonePosition()));\n }\n this.bump();\n break;\n }\n case 123 /* `{` */: {\n nestedBraces += 1;\n this.bump();\n break;\n }\n case 125 /* `}` */: {\n if (nestedBraces > 0) {\n nestedBraces -= 1;\n }\n else {\n return {\n val: this.message.slice(startPosition.offset, this.offset()),\n err: null,\n };\n }\n break;\n }\n default:\n this.bump();\n break;\n }\n }\n return {\n val: this.message.slice(startPosition.offset, this.offset()),\n err: null,\n };\n };\n Parser.prototype.parseNumberSkeletonFromString = function (skeleton, location) {\n var tokens = [];\n try {\n tokens = parseNumberSkeletonFromString(skeleton);\n }\n catch (e) {\n return this.error(ErrorKind.INVALID_NUMBER_SKELETON, location);\n }\n return {\n val: {\n type: SKELETON_TYPE.number,\n tokens: tokens,\n location: location,\n parsedOptions: this.shouldParseSkeletons\n ? parseNumberSkeleton(tokens)\n : {},\n },\n err: null,\n };\n };\n /**\n * @param nesting_level The current nesting level of messages.\n * This can be positive when parsing message fragment in select or plural argument options.\n * @param parent_arg_type The parent argument's type.\n * @param parsed_first_identifier If provided, this is the first identifier-like selector of\n * the argument. It is a by-product of a previous parsing attempt.\n * @param expecting_close_tag If true, this message is directly or indirectly nested inside\n * between a pair of opening and closing tags. The nested message will not parse beyond\n * the closing tag boundary.\n */\n Parser.prototype.tryParsePluralOrSelectOptions = function (nestingLevel, parentArgType, expectCloseTag, parsedFirstIdentifier) {\n var _a;\n var hasOtherClause = false;\n var options = [];\n var parsedSelectors = new Set();\n var selector = parsedFirstIdentifier.value, selectorLocation = parsedFirstIdentifier.location;\n // Parse:\n // one {one apple}\n // ^--^\n while (true) {\n if (selector.length === 0) {\n var startPosition = this.clonePosition();\n if (parentArgType !== 'select' && this.bumpIf('=')) {\n // Try parse `={number}` selector\n var result = this.tryParseDecimalInteger(ErrorKind.EXPECT_PLURAL_ARGUMENT_SELECTOR, ErrorKind.INVALID_PLURAL_ARGUMENT_SELECTOR);\n if (result.err) {\n return result;\n }\n selectorLocation = createLocation(startPosition, this.clonePosition());\n selector = this.message.slice(startPosition.offset, this.offset());\n }\n else {\n break;\n }\n }\n // Duplicate selector clauses\n if (parsedSelectors.has(selector)) {\n return this.error(parentArgType === 'select'\n ? ErrorKind.DUPLICATE_SELECT_ARGUMENT_SELECTOR\n : ErrorKind.DUPLICATE_PLURAL_ARGUMENT_SELECTOR, selectorLocation);\n }\n if (selector === 'other') {\n hasOtherClause = true;\n }\n // Parse:\n // one {one apple}\n // ^----------^\n this.bumpSpace();\n var openingBracePosition = this.clonePosition();\n if (!this.bumpIf('{')) {\n return this.error(parentArgType === 'select'\n ? ErrorKind.EXPECT_SELECT_ARGUMENT_SELECTOR_FRAGMENT\n : ErrorKind.EXPECT_PLURAL_ARGUMENT_SELECTOR_FRAGMENT, createLocation(this.clonePosition(), this.clonePosition()));\n }\n var fragmentResult = this.parseMessage(nestingLevel + 1, parentArgType, expectCloseTag);\n if (fragmentResult.err) {\n return fragmentResult;\n }\n var argCloseResult = this.tryParseArgumentClose(openingBracePosition);\n if (argCloseResult.err) {\n return argCloseResult;\n }\n options.push([\n selector,\n {\n value: fragmentResult.val,\n location: createLocation(openingBracePosition, this.clonePosition()),\n },\n ]);\n // Keep track of the existing selectors\n parsedSelectors.add(selector);\n // Prep next selector clause.\n this.bumpSpace();\n (_a = this.parseIdentifierIfPossible(), selector = _a.value, selectorLocation = _a.location);\n }\n if (options.length === 0) {\n return this.error(parentArgType === 'select'\n ? ErrorKind.EXPECT_SELECT_ARGUMENT_SELECTOR\n : ErrorKind.EXPECT_PLURAL_ARGUMENT_SELECTOR, createLocation(this.clonePosition(), this.clonePosition()));\n }\n if (this.requiresOtherClause && !hasOtherClause) {\n return this.error(ErrorKind.MISSING_OTHER_CLAUSE, createLocation(this.clonePosition(), this.clonePosition()));\n }\n return { val: options, err: null };\n };\n Parser.prototype.tryParseDecimalInteger = function (expectNumberError, invalidNumberError) {\n var sign = 1;\n var startingPosition = this.clonePosition();\n if (this.bumpIf('+')) {\n }\n else if (this.bumpIf('-')) {\n sign = -1;\n }\n var hasDigits = false;\n var decimal = 0;\n while (!this.isEOF()) {\n var ch = this.char();\n if (ch >= 48 /* `0` */ && ch <= 57 /* `9` */) {\n hasDigits = true;\n decimal = decimal * 10 + (ch - 48);\n this.bump();\n }\n else {\n break;\n }\n }\n var location = createLocation(startingPosition, this.clonePosition());\n if (!hasDigits) {\n return this.error(expectNumberError, location);\n }\n decimal *= sign;\n if (!isSafeInteger(decimal)) {\n return this.error(invalidNumberError, location);\n }\n return { val: decimal, err: null };\n };\n Parser.prototype.offset = function () {\n return this.position.offset;\n };\n Parser.prototype.isEOF = function () {\n return this.offset() === this.message.length;\n };\n Parser.prototype.clonePosition = function () {\n // This is much faster than `Object.assign` or spread.\n return {\n offset: this.position.offset,\n line: this.position.line,\n column: this.position.column,\n };\n };\n /**\n * Return the code point at the current position of the parser.\n * Throws if the index is out of bound.\n */\n Parser.prototype.char = function () {\n var offset = this.position.offset;\n if (offset >= this.message.length) {\n throw Error('out of bound');\n }\n var code = codePointAt(this.message, offset);\n if (code === undefined) {\n throw Error(\"Offset \".concat(offset, \" is at invalid UTF-16 code unit boundary\"));\n }\n return code;\n };\n Parser.prototype.error = function (kind, location) {\n return {\n val: null,\n err: {\n kind: kind,\n message: this.message,\n location: location,\n },\n };\n };\n /** Bump the parser to the next UTF-16 code unit. */\n Parser.prototype.bump = function () {\n if (this.isEOF()) {\n return;\n }\n var code = this.char();\n if (code === 10 /* '\\n' */) {\n this.position.line += 1;\n this.position.column = 1;\n this.position.offset += 1;\n }\n else {\n this.position.column += 1;\n // 0 ~ 0x10000 -> unicode BMP, otherwise skip the surrogate pair.\n this.position.offset += code < 0x10000 ? 1 : 2;\n }\n };\n /**\n * If the substring starting at the current position of the parser has\n * the given prefix, then bump the parser to the character immediately\n * following the prefix and return true. Otherwise, don't bump the parser\n * and return false.\n */\n Parser.prototype.bumpIf = function (prefix) {\n if (startsWith(this.message, prefix, this.offset())) {\n for (var i = 0; i < prefix.length; i++) {\n this.bump();\n }\n return true;\n }\n return false;\n };\n /**\n * Bump the parser until the pattern character is found and return `true`.\n * Otherwise bump to the end of the file and return `false`.\n */\n Parser.prototype.bumpUntil = function (pattern) {\n var currentOffset = this.offset();\n var index = this.message.indexOf(pattern, currentOffset);\n if (index >= 0) {\n this.bumpTo(index);\n return true;\n }\n else {\n this.bumpTo(this.message.length);\n return false;\n }\n };\n /**\n * Bump the parser to the target offset.\n * If target offset is beyond the end of the input, bump the parser to the end of the input.\n */\n Parser.prototype.bumpTo = function (targetOffset) {\n if (this.offset() > targetOffset) {\n throw Error(\"targetOffset \".concat(targetOffset, \" must be greater than or equal to the current offset \").concat(this.offset()));\n }\n targetOffset = Math.min(targetOffset, this.message.length);\n while (true) {\n var offset = this.offset();\n if (offset === targetOffset) {\n break;\n }\n if (offset > targetOffset) {\n throw Error(\"targetOffset \".concat(targetOffset, \" is at invalid UTF-16 code unit boundary\"));\n }\n this.bump();\n if (this.isEOF()) {\n break;\n }\n }\n };\n /** advance the parser through all whitespace to the next non-whitespace code unit. */\n Parser.prototype.bumpSpace = function () {\n while (!this.isEOF() && _isWhiteSpace(this.char())) {\n this.bump();\n }\n };\n /**\n * Peek at the *next* Unicode codepoint in the input without advancing the parser.\n * If the input has been exhausted, then this returns null.\n */\n Parser.prototype.peek = function () {\n if (this.isEOF()) {\n return null;\n }\n var code = this.char();\n var offset = this.offset();\n var nextCode = this.message.charCodeAt(offset + (code >= 0x10000 ? 2 : 1));\n return nextCode !== null && nextCode !== void 0 ? nextCode : null;\n };\n return Parser;\n}());\nexport { Parser };\n/**\n * This check if codepoint is alphabet (lower & uppercase)\n * @param codepoint\n * @returns\n */\nfunction _isAlpha(codepoint) {\n return ((codepoint >= 97 && codepoint <= 122) ||\n (codepoint >= 65 && codepoint <= 90));\n}\nfunction _isAlphaOrSlash(codepoint) {\n return _isAlpha(codepoint) || codepoint === 47; /* '/' */\n}\n/** See `parseTag` function docs. */\nfunction _isPotentialElementNameChar(c) {\n return (c === 45 /* '-' */ ||\n c === 46 /* '.' */ ||\n (c >= 48 && c <= 57) /* 0..9 */ ||\n c === 95 /* '_' */ ||\n (c >= 97 && c <= 122) /** a..z */ ||\n (c >= 65 && c <= 90) /* A..Z */ ||\n c == 0xb7 ||\n (c >= 0xc0 && c <= 0xd6) ||\n (c >= 0xd8 && c <= 0xf6) ||\n (c >= 0xf8 && c <= 0x37d) ||\n (c >= 0x37f && c <= 0x1fff) ||\n (c >= 0x200c && c <= 0x200d) ||\n (c >= 0x203f && c <= 0x2040) ||\n (c >= 0x2070 && c <= 0x218f) ||\n (c >= 0x2c00 && c <= 0x2fef) ||\n (c >= 0x3001 && c <= 0xd7ff) ||\n (c >= 0xf900 && c <= 0xfdcf) ||\n (c >= 0xfdf0 && c <= 0xfffd) ||\n (c >= 0x10000 && c <= 0xeffff));\n}\n/**\n * Code point equivalent of regex `\\p{White_Space}`.\n * From: https://www.unicode.org/Public/UCD/latest/ucd/PropList.txt\n */\nfunction _isWhiteSpace(c) {\n return ((c >= 0x0009 && c <= 0x000d) ||\n c === 0x0020 ||\n c === 0x0085 ||\n (c >= 0x200e && c <= 0x200f) ||\n c === 0x2028 ||\n c === 0x2029);\n}\n/**\n * Code point equivalent of regex `\\p{Pattern_Syntax}`.\n * See https://www.unicode.org/Public/UCD/latest/ucd/PropList.txt\n */\nfunction _isPatternSyntax(c) {\n return ((c >= 0x0021 && c <= 0x0023) ||\n c === 0x0024 ||\n (c >= 0x0025 && c <= 0x0027) ||\n c === 0x0028 ||\n c === 0x0029 ||\n c === 0x002a ||\n c === 0x002b ||\n c === 0x002c ||\n c === 0x002d ||\n (c >= 0x002e && c <= 0x002f) ||\n (c >= 0x003a && c <= 0x003b) ||\n (c >= 0x003c && c <= 0x003e) ||\n (c >= 0x003f && c <= 0x0040) ||\n c === 0x005b ||\n c === 0x005c ||\n c === 0x005d ||\n c === 0x005e ||\n c === 0x0060 ||\n c === 0x007b ||\n c === 0x007c ||\n c === 0x007d ||\n c === 0x007e ||\n c === 0x00a1 ||\n (c >= 0x00a2 && c <= 0x00a5) ||\n c === 0x00a6 ||\n c === 0x00a7 ||\n c === 0x00a9 ||\n c === 0x00ab ||\n c === 0x00ac ||\n c === 0x00ae ||\n c === 0x00b0 ||\n c === 0x00b1 ||\n c === 0x00b6 ||\n c === 0x00bb ||\n c === 0x00bf ||\n c === 0x00d7 ||\n c === 0x00f7 ||\n (c >= 0x2010 && c <= 0x2015) ||\n (c >= 0x2016 && c <= 0x2017) ||\n c === 0x2018 ||\n c === 0x2019 ||\n c === 0x201a ||\n (c >= 0x201b && c <= 0x201c) ||\n c === 0x201d ||\n c === 0x201e ||\n c === 0x201f ||\n (c >= 0x2020 && c <= 0x2027) ||\n (c >= 0x2030 && c <= 0x2038) ||\n c === 0x2039 ||\n c === 0x203a ||\n (c >= 0x203b && c <= 0x203e) ||\n (c >= 0x2041 && c <= 0x2043) ||\n c === 0x2044 ||\n c === 0x2045 ||\n c === 0x2046 ||\n (c >= 0x2047 && c <= 0x2051) ||\n c === 0x2052 ||\n c === 0x2053 ||\n (c >= 0x2055 && c <= 0x205e) ||\n (c >= 0x2190 && c <= 0x2194) ||\n (c >= 0x2195 && c <= 0x2199) ||\n (c >= 0x219a && c <= 0x219b) ||\n (c >= 0x219c && c <= 0x219f) ||\n c === 0x21a0 ||\n (c >= 0x21a1 && c <= 0x21a2) ||\n c === 0x21a3 ||\n (c >= 0x21a4 && c <= 0x21a5) ||\n c === 0x21a6 ||\n (c >= 0x21a7 && c <= 0x21ad) ||\n c === 0x21ae ||\n (c >= 0x21af && c <= 0x21cd) ||\n (c >= 0x21ce && c <= 0x21cf) ||\n (c >= 0x21d0 && c <= 0x21d1) ||\n c === 0x21d2 ||\n c === 0x21d3 ||\n c === 0x21d4 ||\n (c >= 0x21d5 && c <= 0x21f3) ||\n (c >= 0x21f4 && c <= 0x22ff) ||\n (c >= 0x2300 && c <= 0x2307) ||\n c === 0x2308 ||\n c === 0x2309 ||\n c === 0x230a ||\n c === 0x230b ||\n (c >= 0x230c && c <= 0x231f) ||\n (c >= 0x2320 && c <= 0x2321) ||\n (c >= 0x2322 && c <= 0x2328) ||\n c === 0x2329 ||\n c === 0x232a ||\n (c >= 0x232b && c <= 0x237b) ||\n c === 0x237c ||\n (c >= 0x237d && c <= 0x239a) ||\n (c >= 0x239b && c <= 0x23b3) ||\n (c >= 0x23b4 && c <= 0x23db) ||\n (c >= 0x23dc && c <= 0x23e1) ||\n (c >= 0x23e2 && c <= 0x2426) ||\n (c >= 0x2427 && c <= 0x243f) ||\n (c >= 0x2440 && c <= 0x244a) ||\n (c >= 0x244b && c <= 0x245f) ||\n (c >= 0x2500 && c <= 0x25b6) ||\n c === 0x25b7 ||\n (c >= 0x25b8 && c <= 0x25c0) ||\n c === 0x25c1 ||\n (c >= 0x25c2 && c <= 0x25f7) ||\n (c >= 0x25f8 && c <= 0x25ff) ||\n (c >= 0x2600 && c <= 0x266e) ||\n c === 0x266f ||\n (c >= 0x2670 && c <= 0x2767) ||\n c === 0x2768 ||\n c === 0x2769 ||\n c === 0x276a ||\n c === 0x276b ||\n c === 0x276c ||\n c === 0x276d ||\n c === 0x276e ||\n c === 0x276f ||\n c === 0x2770 ||\n c === 0x2771 ||\n c === 0x2772 ||\n c === 0x2773 ||\n c === 0x2774 ||\n c === 0x2775 ||\n (c >= 0x2794 && c <= 0x27bf) ||\n (c >= 0x27c0 && c <= 0x27c4) ||\n c === 0x27c5 ||\n c === 0x27c6 ||\n (c >= 0x27c7 && c <= 0x27e5) ||\n c === 0x27e6 ||\n c === 0x27e7 ||\n c === 0x27e8 ||\n c === 0x27e9 ||\n c === 0x27ea ||\n c === 0x27eb ||\n c === 0x27ec ||\n c === 0x27ed ||\n c === 0x27ee ||\n c === 0x27ef ||\n (c >= 0x27f0 && c <= 0x27ff) ||\n (c >= 0x2800 && c <= 0x28ff) ||\n (c >= 0x2900 && c <= 0x2982) ||\n c === 0x2983 ||\n c === 0x2984 ||\n c === 0x2985 ||\n c === 0x2986 ||\n c === 0x2987 ||\n c === 0x2988 ||\n c === 0x2989 ||\n c === 0x298a ||\n c === 0x298b ||\n c === 0x298c ||\n c === 0x298d ||\n c === 0x298e ||\n c === 0x298f ||\n c === 0x2990 ||\n c === 0x2991 ||\n c === 0x2992 ||\n c === 0x2993 ||\n c === 0x2994 ||\n c === 0x2995 ||\n c === 0x2996 ||\n c === 0x2997 ||\n c === 0x2998 ||\n (c >= 0x2999 && c <= 0x29d7) ||\n c === 0x29d8 ||\n c === 0x29d9 ||\n c === 0x29da ||\n c === 0x29db ||\n (c >= 0x29dc && c <= 0x29fb) ||\n c === 0x29fc ||\n c === 0x29fd ||\n (c >= 0x29fe && c <= 0x2aff) ||\n (c >= 0x2b00 && c <= 0x2b2f) ||\n (c >= 0x2b30 && c <= 0x2b44) ||\n (c >= 0x2b45 && c <= 0x2b46) ||\n (c >= 0x2b47 && c <= 0x2b4c) ||\n (c >= 0x2b4d && c <= 0x2b73) ||\n (c >= 0x2b74 && c <= 0x2b75) ||\n (c >= 0x2b76 && c <= 0x2b95) ||\n c === 0x2b96 ||\n (c >= 0x2b97 && c <= 0x2bff) ||\n (c >= 0x2e00 && c <= 0x2e01) ||\n c === 0x2e02 ||\n c === 0x2e03 ||\n c === 0x2e04 ||\n c === 0x2e05 ||\n (c >= 0x2e06 && c <= 0x2e08) ||\n c === 0x2e09 ||\n c === 0x2e0a ||\n c === 0x2e0b ||\n c === 0x2e0c ||\n c === 0x2e0d ||\n (c >= 0x2e0e && c <= 0x2e16) ||\n c === 0x2e17 ||\n (c >= 0x2e18 && c <= 0x2e19) ||\n c === 0x2e1a ||\n c === 0x2e1b ||\n c === 0x2e1c ||\n c === 0x2e1d ||\n (c >= 0x2e1e && c <= 0x2e1f) ||\n c === 0x2e20 ||\n c === 0x2e21 ||\n c === 0x2e22 ||\n c === 0x2e23 ||\n c === 0x2e24 ||\n c === 0x2e25 ||\n c === 0x2e26 ||\n c === 0x2e27 ||\n c === 0x2e28 ||\n c === 0x2e29 ||\n (c >= 0x2e2a && c <= 0x2e2e) ||\n c === 0x2e2f ||\n (c >= 0x2e30 && c <= 0x2e39) ||\n (c >= 0x2e3a && c <= 0x2e3b) ||\n (c >= 0x2e3c && c <= 0x2e3f) ||\n c === 0x2e40 ||\n c === 0x2e41 ||\n c === 0x2e42 ||\n (c >= 0x2e43 && c <= 0x2e4f) ||\n (c >= 0x2e50 && c <= 0x2e51) ||\n c === 0x2e52 ||\n (c >= 0x2e53 && c <= 0x2e7f) ||\n (c >= 0x3001 && c <= 0x3003) ||\n c === 0x3008 ||\n c === 0x3009 ||\n c === 0x300a ||\n c === 0x300b ||\n c === 0x300c ||\n c === 0x300d ||\n c === 0x300e ||\n c === 0x300f ||\n c === 0x3010 ||\n c === 0x3011 ||\n (c >= 0x3012 && c <= 0x3013) ||\n c === 0x3014 ||\n c === 0x3015 ||\n c === 0x3016 ||\n c === 0x3017 ||\n c === 0x3018 ||\n c === 0x3019 ||\n c === 0x301a ||\n c === 0x301b ||\n c === 0x301c ||\n c === 0x301d ||\n (c >= 0x301e && c <= 0x301f) ||\n c === 0x3020 ||\n c === 0x3030 ||\n c === 0xfd3e ||\n c === 0xfd3f ||\n (c >= 0xfe45 && c <= 0xfe46));\n}\n","import { timeData } from './time-data.generated';\n/**\n * Returns the best matching date time pattern if a date time skeleton\n * pattern is provided with a locale. Follows the Unicode specification:\n * https://www.unicode.org/reports/tr35/tr35-dates.html#table-mapping-requested-time-skeletons-to-patterns\n * @param skeleton date time skeleton pattern that possibly includes j, J or C\n * @param locale\n */\nexport function getBestPattern(skeleton, locale) {\n var skeletonCopy = '';\n for (var patternPos = 0; patternPos < skeleton.length; patternPos++) {\n var patternChar = skeleton.charAt(patternPos);\n if (patternChar === 'j') {\n var extraLength = 0;\n while (patternPos + 1 < skeleton.length &&\n skeleton.charAt(patternPos + 1) === patternChar) {\n extraLength++;\n patternPos++;\n }\n var hourLen = 1 + (extraLength & 1);\n var dayPeriodLen = extraLength < 2 ? 1 : 3 + (extraLength >> 1);\n var dayPeriodChar = 'a';\n var hourChar = getDefaultHourSymbolFromLocale(locale);\n if (hourChar == 'H' || hourChar == 'k') {\n dayPeriodLen = 0;\n }\n while (dayPeriodLen-- > 0) {\n skeletonCopy += dayPeriodChar;\n }\n while (hourLen-- > 0) {\n skeletonCopy = hourChar + skeletonCopy;\n }\n }\n else if (patternChar === 'J') {\n skeletonCopy += 'H';\n }\n else {\n skeletonCopy += patternChar;\n }\n }\n return skeletonCopy;\n}\n/**\n * Maps the [hour cycle type](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/hourCycle)\n * of the given `locale` to the corresponding time pattern.\n * @param locale\n */\nfunction getDefaultHourSymbolFromLocale(locale) {\n var hourCycle = locale.hourCycle;\n if (hourCycle === undefined &&\n // @ts-ignore hourCycle(s) is not identified yet\n locale.hourCycles &&\n // @ts-ignore\n locale.hourCycles.length) {\n // @ts-ignore\n hourCycle = locale.hourCycles[0];\n }\n if (hourCycle) {\n switch (hourCycle) {\n case 'h24':\n return 'k';\n case 'h23':\n return 'H';\n case 'h12':\n return 'h';\n case 'h11':\n return 'K';\n default:\n throw new Error('Invalid hourCycle');\n }\n }\n // TODO: Once hourCycle is fully supported remove the following with data generation\n var languageTag = locale.language;\n var regionTag;\n if (languageTag !== 'root') {\n regionTag = locale.maximize().region;\n }\n var hourCycles = timeData[regionTag || ''] ||\n timeData[languageTag || ''] ||\n timeData[\"\".concat(languageTag, \"-001\")] ||\n timeData['001'];\n return hourCycles[0];\n}\n","import { __assign } from \"tslib\";\nimport { ErrorKind } from './error';\nimport { Parser } from './parser';\nimport { isDateElement, isDateTimeSkeleton, isNumberElement, isNumberSkeleton, isPluralElement, isSelectElement, isTagElement, isTimeElement, } from './types';\nfunction pruneLocation(els) {\n els.forEach(function (el) {\n delete el.location;\n if (isSelectElement(el) || isPluralElement(el)) {\n for (var k in el.options) {\n delete el.options[k].location;\n pruneLocation(el.options[k].value);\n }\n }\n else if (isNumberElement(el) && isNumberSkeleton(el.style)) {\n delete el.style.location;\n }\n else if ((isDateElement(el) || isTimeElement(el)) &&\n isDateTimeSkeleton(el.style)) {\n delete el.style.location;\n }\n else if (isTagElement(el)) {\n pruneLocation(el.children);\n }\n });\n}\nexport function parse(message, opts) {\n if (opts === void 0) { opts = {}; }\n opts = __assign({ shouldParseSkeletons: true, requiresOtherClause: true }, opts);\n var result = new Parser(message, opts).parse();\n if (result.err) {\n var error = SyntaxError(ErrorKind[result.err.kind]);\n // @ts-expect-error Assign to error object\n error.location = result.err.location;\n // @ts-expect-error Assign to error object\n error.originalMessage = result.err.message;\n throw error;\n }\n if (!(opts === null || opts === void 0 ? void 0 : opts.captureLocation)) {\n pruneLocation(result.val);\n }\n return result.val;\n}\nexport * from './types';\n// only for testing\nexport var _Parser = Parser;\n","//\n// Main\n//\nexport function memoize(fn, options) {\n var cache = options && options.cache ? options.cache : cacheDefault;\n var serializer = options && options.serializer ? options.serializer : serializerDefault;\n var strategy = options && options.strategy ? options.strategy : strategyDefault;\n return strategy(fn, {\n cache: cache,\n serializer: serializer,\n });\n}\n//\n// Strategy\n//\nfunction isPrimitive(value) {\n return (value == null || typeof value === 'number' || typeof value === 'boolean'); // || typeof value === \"string\" 'unsafe' primitive for our needs\n}\nfunction monadic(fn, cache, serializer, arg) {\n var cacheKey = isPrimitive(arg) ? arg : serializer(arg);\n var computedValue = cache.get(cacheKey);\n if (typeof computedValue === 'undefined') {\n computedValue = fn.call(this, arg);\n cache.set(cacheKey, computedValue);\n }\n return computedValue;\n}\nfunction variadic(fn, cache, serializer) {\n var args = Array.prototype.slice.call(arguments, 3);\n var cacheKey = serializer(args);\n var computedValue = cache.get(cacheKey);\n if (typeof computedValue === 'undefined') {\n computedValue = fn.apply(this, args);\n cache.set(cacheKey, computedValue);\n }\n return computedValue;\n}\nfunction assemble(fn, context, strategy, cache, serialize) {\n return strategy.bind(context, fn, cache, serialize);\n}\nfunction strategyDefault(fn, options) {\n var strategy = fn.length === 1 ? monadic : variadic;\n return assemble(fn, this, strategy, options.cache.create(), options.serializer);\n}\nfunction strategyVariadic(fn, options) {\n return assemble(fn, this, variadic, options.cache.create(), options.serializer);\n}\nfunction strategyMonadic(fn, options) {\n return assemble(fn, this, monadic, options.cache.create(), options.serializer);\n}\n//\n// Serializer\n//\nvar serializerDefault = function () {\n return JSON.stringify(arguments);\n};\n//\n// Cache\n//\nfunction ObjectWithoutPrototypeCache() {\n this.cache = Object.create(null);\n}\nObjectWithoutPrototypeCache.prototype.get = function (key) {\n return this.cache[key];\n};\nObjectWithoutPrototypeCache.prototype.set = function (key, value) {\n this.cache[key] = value;\n};\nvar cacheDefault = {\n create: function create() {\n // @ts-ignore\n return new ObjectWithoutPrototypeCache();\n },\n};\nexport var strategies = {\n variadic: strategyVariadic,\n monadic: strategyMonadic,\n};\n","import { __extends } from \"tslib\";\nexport var ErrorCode;\n(function (ErrorCode) {\n // When we have a placeholder but no value to format\n ErrorCode[\"MISSING_VALUE\"] = \"MISSING_VALUE\";\n // When value supplied is invalid\n ErrorCode[\"INVALID_VALUE\"] = \"INVALID_VALUE\";\n // When we need specific Intl API but it's not available\n ErrorCode[\"MISSING_INTL_API\"] = \"MISSING_INTL_API\";\n})(ErrorCode || (ErrorCode = {}));\nvar FormatError = /** @class */ (function (_super) {\n __extends(FormatError, _super);\n function FormatError(msg, code, originalMessage) {\n var _this = _super.call(this, msg) || this;\n _this.code = code;\n _this.originalMessage = originalMessage;\n return _this;\n }\n FormatError.prototype.toString = function () {\n return \"[formatjs Error: \".concat(this.code, \"] \").concat(this.message);\n };\n return FormatError;\n}(Error));\nexport { FormatError };\nvar InvalidValueError = /** @class */ (function (_super) {\n __extends(InvalidValueError, _super);\n function InvalidValueError(variableId, value, options, originalMessage) {\n return _super.call(this, \"Invalid values for \\\"\".concat(variableId, \"\\\": \\\"\").concat(value, \"\\\". Options are \\\"\").concat(Object.keys(options).join('\", \"'), \"\\\"\"), ErrorCode.INVALID_VALUE, originalMessage) || this;\n }\n return InvalidValueError;\n}(FormatError));\nexport { InvalidValueError };\nvar InvalidValueTypeError = /** @class */ (function (_super) {\n __extends(InvalidValueTypeError, _super);\n function InvalidValueTypeError(value, type, originalMessage) {\n return _super.call(this, \"Value for \\\"\".concat(value, \"\\\" must be of type \").concat(type), ErrorCode.INVALID_VALUE, originalMessage) || this;\n }\n return InvalidValueTypeError;\n}(FormatError));\nexport { InvalidValueTypeError };\nvar MissingValueError = /** @class */ (function (_super) {\n __extends(MissingValueError, _super);\n function MissingValueError(variableId, originalMessage) {\n return _super.call(this, \"The intl string context variable \\\"\".concat(variableId, \"\\\" was not provided to the string \\\"\").concat(originalMessage, \"\\\"\"), ErrorCode.MISSING_VALUE, originalMessage) || this;\n }\n return MissingValueError;\n}(FormatError));\nexport { MissingValueError };\n","import { isArgumentElement, isDateElement, isDateTimeSkeleton, isLiteralElement, isNumberElement, isNumberSkeleton, isPluralElement, isPoundElement, isSelectElement, isTimeElement, isTagElement, } from '@formatjs/icu-messageformat-parser';\nimport { MissingValueError, InvalidValueError, ErrorCode, FormatError, InvalidValueTypeError, } from './error';\nexport var PART_TYPE;\n(function (PART_TYPE) {\n PART_TYPE[PART_TYPE[\"literal\"] = 0] = \"literal\";\n PART_TYPE[PART_TYPE[\"object\"] = 1] = \"object\";\n})(PART_TYPE || (PART_TYPE = {}));\nfunction mergeLiteral(parts) {\n if (parts.length < 2) {\n return parts;\n }\n return parts.reduce(function (all, part) {\n var lastPart = all[all.length - 1];\n if (!lastPart ||\n lastPart.type !== PART_TYPE.literal ||\n part.type !== PART_TYPE.literal) {\n all.push(part);\n }\n else {\n lastPart.value += part.value;\n }\n return all;\n }, []);\n}\nexport function isFormatXMLElementFn(el) {\n return typeof el === 'function';\n}\n// TODO(skeleton): add skeleton support\nexport function formatToParts(els, locales, formatters, formats, values, currentPluralValue, \n// For debugging\noriginalMessage) {\n // Hot path for straight simple msg translations\n if (els.length === 1 && isLiteralElement(els[0])) {\n return [\n {\n type: PART_TYPE.literal,\n value: els[0].value,\n },\n ];\n }\n var result = [];\n for (var _i = 0, els_1 = els; _i < els_1.length; _i++) {\n var el = els_1[_i];\n // Exit early for string parts.\n if (isLiteralElement(el)) {\n result.push({\n type: PART_TYPE.literal,\n value: el.value,\n });\n continue;\n }\n // TODO: should this part be literal type?\n // Replace `#` in plural rules with the actual numeric value.\n if (isPoundElement(el)) {\n if (typeof currentPluralValue === 'number') {\n result.push({\n type: PART_TYPE.literal,\n value: formatters.getNumberFormat(locales).format(currentPluralValue),\n });\n }\n continue;\n }\n var varName = el.value;\n // Enforce that all required values are provided by the caller.\n if (!(values && varName in values)) {\n throw new MissingValueError(varName, originalMessage);\n }\n var value = values[varName];\n if (isArgumentElement(el)) {\n if (!value || typeof value === 'string' || typeof value === 'number') {\n value =\n typeof value === 'string' || typeof value === 'number'\n ? String(value)\n : '';\n }\n result.push({\n type: typeof value === 'string' ? PART_TYPE.literal : PART_TYPE.object,\n value: value,\n });\n continue;\n }\n // Recursively format plural and select parts' option — which can be a\n // nested pattern structure. The choosing of the option to use is\n // abstracted-by and delegated-to the part helper object.\n if (isDateElement(el)) {\n var style = typeof el.style === 'string'\n ? formats.date[el.style]\n : isDateTimeSkeleton(el.style)\n ? el.style.parsedOptions\n : undefined;\n result.push({\n type: PART_TYPE.literal,\n value: formatters\n .getDateTimeFormat(locales, style)\n .format(value),\n });\n continue;\n }\n if (isTimeElement(el)) {\n var style = typeof el.style === 'string'\n ? formats.time[el.style]\n : isDateTimeSkeleton(el.style)\n ? el.style.parsedOptions\n : formats.time.medium;\n result.push({\n type: PART_TYPE.literal,\n value: formatters\n .getDateTimeFormat(locales, style)\n .format(value),\n });\n continue;\n }\n if (isNumberElement(el)) {\n var style = typeof el.style === 'string'\n ? formats.number[el.style]\n : isNumberSkeleton(el.style)\n ? el.style.parsedOptions\n : undefined;\n if (style && style.scale) {\n value =\n value *\n (style.scale || 1);\n }\n result.push({\n type: PART_TYPE.literal,\n value: formatters\n .getNumberFormat(locales, style)\n .format(value),\n });\n continue;\n }\n if (isTagElement(el)) {\n var children = el.children, value_1 = el.value;\n var formatFn = values[value_1];\n if (!isFormatXMLElementFn(formatFn)) {\n throw new InvalidValueTypeError(value_1, 'function', originalMessage);\n }\n var parts = formatToParts(children, locales, formatters, formats, values, currentPluralValue);\n var chunks = formatFn(parts.map(function (p) { return p.value; }));\n if (!Array.isArray(chunks)) {\n chunks = [chunks];\n }\n result.push.apply(result, chunks.map(function (c) {\n return {\n type: typeof c === 'string' ? PART_TYPE.literal : PART_TYPE.object,\n value: c,\n };\n }));\n }\n if (isSelectElement(el)) {\n var opt = el.options[value] || el.options.other;\n if (!opt) {\n throw new InvalidValueError(el.value, value, Object.keys(el.options), originalMessage);\n }\n result.push.apply(result, formatToParts(opt.value, locales, formatters, formats, values));\n continue;\n }\n if (isPluralElement(el)) {\n var opt = el.options[\"=\".concat(value)];\n if (!opt) {\n if (!Intl.PluralRules) {\n throw new FormatError(\"Intl.PluralRules is not available in this environment.\\nTry polyfilling it using \\\"@formatjs/intl-pluralrules\\\"\\n\", ErrorCode.MISSING_INTL_API, originalMessage);\n }\n var rule = formatters\n .getPluralRules(locales, { type: el.pluralType })\n .select(value - (el.offset || 0));\n opt = el.options[rule] || el.options.other;\n }\n if (!opt) {\n throw new InvalidValueError(el.value, value, Object.keys(el.options), originalMessage);\n }\n result.push.apply(result, formatToParts(opt.value, locales, formatters, formats, values, value - (el.offset || 0)));\n continue;\n }\n }\n return mergeLiteral(result);\n}\n","/*\nCopyright (c) 2014, Yahoo! Inc. All rights reserved.\nCopyrights licensed under the New BSD License.\nSee the accompanying LICENSE file for terms.\n*/\nimport { __assign, __rest, __spreadArray } from \"tslib\";\nimport { parse, } from '@formatjs/icu-messageformat-parser';\nimport { memoize, strategies } from '@formatjs/fast-memoize';\nimport { formatToParts, PART_TYPE, } from './formatters';\n// -- MessageFormat --------------------------------------------------------\nfunction mergeConfig(c1, c2) {\n if (!c2) {\n return c1;\n }\n return __assign(__assign(__assign({}, (c1 || {})), (c2 || {})), Object.keys(c1).reduce(function (all, k) {\n all[k] = __assign(__assign({}, c1[k]), (c2[k] || {}));\n return all;\n }, {}));\n}\nfunction mergeConfigs(defaultConfig, configs) {\n if (!configs) {\n return defaultConfig;\n }\n return Object.keys(defaultConfig).reduce(function (all, k) {\n all[k] = mergeConfig(defaultConfig[k], configs[k]);\n return all;\n }, __assign({}, defaultConfig));\n}\nfunction createFastMemoizeCache(store) {\n return {\n create: function () {\n return {\n get: function (key) {\n return store[key];\n },\n set: function (key, value) {\n store[key] = value;\n },\n };\n },\n };\n}\nfunction createDefaultFormatters(cache) {\n if (cache === void 0) { cache = {\n number: {},\n dateTime: {},\n pluralRules: {},\n }; }\n return {\n getNumberFormat: memoize(function () {\n var _a;\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new ((_a = Intl.NumberFormat).bind.apply(_a, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.number),\n strategy: strategies.variadic,\n }),\n getDateTimeFormat: memoize(function () {\n var _a;\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new ((_a = Intl.DateTimeFormat).bind.apply(_a, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.dateTime),\n strategy: strategies.variadic,\n }),\n getPluralRules: memoize(function () {\n var _a;\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new ((_a = Intl.PluralRules).bind.apply(_a, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.pluralRules),\n strategy: strategies.variadic,\n }),\n };\n}\nvar IntlMessageFormat = /** @class */ (function () {\n function IntlMessageFormat(message, locales, overrideFormats, opts) {\n if (locales === void 0) { locales = IntlMessageFormat.defaultLocale; }\n var _this = this;\n this.formatterCache = {\n number: {},\n dateTime: {},\n pluralRules: {},\n };\n this.format = function (values) {\n var parts = _this.formatToParts(values);\n // Hot path for straight simple msg translations\n if (parts.length === 1) {\n return parts[0].value;\n }\n var result = parts.reduce(function (all, part) {\n if (!all.length ||\n part.type !== PART_TYPE.literal ||\n typeof all[all.length - 1] !== 'string') {\n all.push(part.value);\n }\n else {\n all[all.length - 1] += part.value;\n }\n return all;\n }, []);\n if (result.length <= 1) {\n return result[0] || '';\n }\n return result;\n };\n this.formatToParts = function (values) {\n return formatToParts(_this.ast, _this.locales, _this.formatters, _this.formats, values, undefined, _this.message);\n };\n this.resolvedOptions = function () {\n var _a;\n return ({\n locale: ((_a = _this.resolvedLocale) === null || _a === void 0 ? void 0 : _a.toString()) ||\n Intl.NumberFormat.supportedLocalesOf(_this.locales)[0],\n });\n };\n this.getAst = function () { return _this.ast; };\n // Defined first because it's used to build the format pattern.\n this.locales = locales;\n this.resolvedLocale = IntlMessageFormat.resolveLocale(locales);\n if (typeof message === 'string') {\n this.message = message;\n if (!IntlMessageFormat.__parse) {\n throw new TypeError('IntlMessageFormat.__parse must be set to process `message` of type `string`');\n }\n var _a = opts || {}, formatters = _a.formatters, parseOpts = __rest(_a, [\"formatters\"]);\n // Parse string messages into an AST.\n this.ast = IntlMessageFormat.__parse(message, __assign(__assign({}, parseOpts), { locale: this.resolvedLocale }));\n }\n else {\n this.ast = message;\n }\n if (!Array.isArray(this.ast)) {\n throw new TypeError('A message must be provided as a String or AST.');\n }\n // Creates a new object with the specified `formats` merged with the default\n // formats.\n this.formats = mergeConfigs(IntlMessageFormat.formats, overrideFormats);\n this.formatters =\n (opts && opts.formatters) || createDefaultFormatters(this.formatterCache);\n }\n Object.defineProperty(IntlMessageFormat, \"defaultLocale\", {\n get: function () {\n if (!IntlMessageFormat.memoizedDefaultLocale) {\n IntlMessageFormat.memoizedDefaultLocale =\n new Intl.NumberFormat().resolvedOptions().locale;\n }\n return IntlMessageFormat.memoizedDefaultLocale;\n },\n enumerable: false,\n configurable: true\n });\n IntlMessageFormat.memoizedDefaultLocale = null;\n IntlMessageFormat.resolveLocale = function (locales) {\n if (typeof Intl.Locale === 'undefined') {\n return;\n }\n var supportedLocales = Intl.NumberFormat.supportedLocalesOf(locales);\n if (supportedLocales.length > 0) {\n return new Intl.Locale(supportedLocales[0]);\n }\n return new Intl.Locale(typeof locales === 'string' ? locales : locales[0]);\n };\n IntlMessageFormat.__parse = parse;\n // Default format options used as the prototype of the `formats` provided to the\n // constructor. These are used when constructing the internal Intl.NumberFormat\n // and Intl.DateTimeFormat instances.\n IntlMessageFormat.formats = {\n number: {\n integer: {\n maximumFractionDigits: 0,\n },\n currency: {\n style: 'currency',\n },\n percent: {\n style: 'percent',\n },\n },\n date: {\n short: {\n month: 'numeric',\n day: 'numeric',\n year: '2-digit',\n },\n medium: {\n month: 'short',\n day: 'numeric',\n year: 'numeric',\n },\n long: {\n month: 'long',\n day: 'numeric',\n year: 'numeric',\n },\n full: {\n weekday: 'long',\n month: 'long',\n day: 'numeric',\n year: 'numeric',\n },\n },\n time: {\n short: {\n hour: 'numeric',\n minute: 'numeric',\n },\n medium: {\n hour: 'numeric',\n minute: 'numeric',\n second: 'numeric',\n },\n long: {\n hour: 'numeric',\n minute: 'numeric',\n second: 'numeric',\n timeZoneName: 'short',\n },\n full: {\n hour: 'numeric',\n minute: 'numeric',\n second: 'numeric',\n timeZoneName: 'short',\n },\n },\n };\n return IntlMessageFormat;\n}());\nexport { IntlMessageFormat };\n","import { __extends } from \"tslib\";\nexport var IntlErrorCode;\n(function (IntlErrorCode) {\n IntlErrorCode[\"FORMAT_ERROR\"] = \"FORMAT_ERROR\";\n IntlErrorCode[\"UNSUPPORTED_FORMATTER\"] = \"UNSUPPORTED_FORMATTER\";\n IntlErrorCode[\"INVALID_CONFIG\"] = \"INVALID_CONFIG\";\n IntlErrorCode[\"MISSING_DATA\"] = \"MISSING_DATA\";\n IntlErrorCode[\"MISSING_TRANSLATION\"] = \"MISSING_TRANSLATION\";\n})(IntlErrorCode || (IntlErrorCode = {}));\nvar IntlError = /** @class */ (function (_super) {\n __extends(IntlError, _super);\n function IntlError(code, message, exception) {\n var _this = this;\n var err = exception\n ? exception instanceof Error\n ? exception\n : new Error(String(exception))\n : undefined;\n _this = _super.call(this, \"[@formatjs/intl Error \".concat(code, \"] \").concat(message, \"\\n\").concat(err ? \"\\n\".concat(err.message, \"\\n\").concat(err.stack) : '')) || this;\n _this.code = code;\n // @ts-ignore just so we don't need to declare dep on @types/node\n if (typeof Error.captureStackTrace === 'function') {\n // @ts-ignore just so we don't need to declare dep on @types/node\n Error.captureStackTrace(_this, IntlError);\n }\n return _this;\n }\n return IntlError;\n}(Error));\nexport { IntlError };\nvar UnsupportedFormatterError = /** @class */ (function (_super) {\n __extends(UnsupportedFormatterError, _super);\n function UnsupportedFormatterError(message, exception) {\n return _super.call(this, IntlErrorCode.UNSUPPORTED_FORMATTER, message, exception) || this;\n }\n return UnsupportedFormatterError;\n}(IntlError));\nexport { UnsupportedFormatterError };\nvar InvalidConfigError = /** @class */ (function (_super) {\n __extends(InvalidConfigError, _super);\n function InvalidConfigError(message, exception) {\n return _super.call(this, IntlErrorCode.INVALID_CONFIG, message, exception) || this;\n }\n return InvalidConfigError;\n}(IntlError));\nexport { InvalidConfigError };\nvar MissingDataError = /** @class */ (function (_super) {\n __extends(MissingDataError, _super);\n function MissingDataError(message, exception) {\n return _super.call(this, IntlErrorCode.MISSING_DATA, message, exception) || this;\n }\n return MissingDataError;\n}(IntlError));\nexport { MissingDataError };\nvar IntlFormatError = /** @class */ (function (_super) {\n __extends(IntlFormatError, _super);\n function IntlFormatError(message, locale, exception) {\n return _super.call(this, IntlErrorCode.FORMAT_ERROR, \"\".concat(message, \"\\nLocale: \").concat(locale, \"\\n\"), exception) || this;\n }\n return IntlFormatError;\n}(IntlError));\nexport { IntlFormatError };\nvar MessageFormatError = /** @class */ (function (_super) {\n __extends(MessageFormatError, _super);\n function MessageFormatError(message, locale, descriptor, exception) {\n var _this = _super.call(this, \"\".concat(message, \"\\nMessageID: \").concat(descriptor === null || descriptor === void 0 ? void 0 : descriptor.id, \"\\nDefault Message: \").concat(descriptor === null || descriptor === void 0 ? void 0 : descriptor.defaultMessage, \"\\nDescription: \").concat(descriptor === null || descriptor === void 0 ? void 0 : descriptor.description, \"\\n\"), locale, exception) || this;\n _this.descriptor = descriptor;\n return _this;\n }\n return MessageFormatError;\n}(IntlFormatError));\nexport { MessageFormatError };\nvar MissingTranslationError = /** @class */ (function (_super) {\n __extends(MissingTranslationError, _super);\n function MissingTranslationError(descriptor, locale) {\n var _this = _super.call(this, IntlErrorCode.MISSING_TRANSLATION, \"Missing message: \\\"\".concat(descriptor.id, \"\\\" for locale \\\"\").concat(locale, \"\\\", using \").concat(descriptor.defaultMessage\n ? \"default message (\".concat(typeof descriptor.defaultMessage === 'string'\n ? descriptor.defaultMessage\n : descriptor.defaultMessage\n .map(function (e) { var _a; return (_a = e.value) !== null && _a !== void 0 ? _a : JSON.stringify(e); })\n .join(), \")\")\n : 'id', \" as fallback.\")) || this;\n _this.descriptor = descriptor;\n return _this;\n }\n return MissingTranslationError;\n}(IntlError));\nexport { MissingTranslationError };\n","import { __assign, __spreadArray } from \"tslib\";\nimport { IntlMessageFormat } from 'intl-messageformat';\nimport { memoize, strategies } from '@formatjs/fast-memoize';\nimport { UnsupportedFormatterError } from './error';\nexport function filterProps(props, allowlist, defaults) {\n if (defaults === void 0) { defaults = {}; }\n return allowlist.reduce(function (filtered, name) {\n if (name in props) {\n filtered[name] = props[name];\n }\n else if (name in defaults) {\n filtered[name] = defaults[name];\n }\n return filtered;\n }, {});\n}\nvar defaultErrorHandler = function (error) {\n // @ts-ignore just so we don't need to declare dep on @types/node\n if (process.env.NODE_ENV !== 'production') {\n console.error(error);\n }\n};\nvar defaultWarnHandler = function (warning) {\n // @ts-ignore just so we don't need to declare dep on @types/node\n if (process.env.NODE_ENV !== 'production') {\n console.warn(warning);\n }\n};\nexport var DEFAULT_INTL_CONFIG = {\n formats: {},\n messages: {},\n timeZone: undefined,\n defaultLocale: 'en',\n defaultFormats: {},\n fallbackOnEmptyString: true,\n onError: defaultErrorHandler,\n onWarn: defaultWarnHandler,\n};\nexport function createIntlCache() {\n return {\n dateTime: {},\n number: {},\n message: {},\n relativeTime: {},\n pluralRules: {},\n list: {},\n displayNames: {},\n };\n}\nfunction createFastMemoizeCache(store) {\n return {\n create: function () {\n return {\n get: function (key) {\n return store[key];\n },\n set: function (key, value) {\n store[key] = value;\n },\n };\n },\n };\n}\n/**\n * Create intl formatters and populate cache\n * @param cache explicit cache to prevent leaking memory\n */\nexport function createFormatters(cache) {\n if (cache === void 0) { cache = createIntlCache(); }\n var RelativeTimeFormat = Intl.RelativeTimeFormat;\n var ListFormat = Intl.ListFormat;\n var DisplayNames = Intl.DisplayNames;\n var getDateTimeFormat = memoize(function () {\n var _a;\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new ((_a = Intl.DateTimeFormat).bind.apply(_a, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.dateTime),\n strategy: strategies.variadic,\n });\n var getNumberFormat = memoize(function () {\n var _a;\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new ((_a = Intl.NumberFormat).bind.apply(_a, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.number),\n strategy: strategies.variadic,\n });\n var getPluralRules = memoize(function () {\n var _a;\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new ((_a = Intl.PluralRules).bind.apply(_a, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.pluralRules),\n strategy: strategies.variadic,\n });\n return {\n getDateTimeFormat: getDateTimeFormat,\n getNumberFormat: getNumberFormat,\n getMessageFormat: memoize(function (message, locales, overrideFormats, opts) {\n return new IntlMessageFormat(message, locales, overrideFormats, __assign({ formatters: {\n getNumberFormat: getNumberFormat,\n getDateTimeFormat: getDateTimeFormat,\n getPluralRules: getPluralRules,\n } }, (opts || {})));\n }, {\n cache: createFastMemoizeCache(cache.message),\n strategy: strategies.variadic,\n }),\n getRelativeTimeFormat: memoize(function () {\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new (RelativeTimeFormat.bind.apply(RelativeTimeFormat, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.relativeTime),\n strategy: strategies.variadic,\n }),\n getPluralRules: getPluralRules,\n getListFormat: memoize(function () {\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new (ListFormat.bind.apply(ListFormat, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.list),\n strategy: strategies.variadic,\n }),\n getDisplayNames: memoize(function () {\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n return new (DisplayNames.bind.apply(DisplayNames, __spreadArray([void 0], args, false)))();\n }, {\n cache: createFastMemoizeCache(cache.displayNames),\n strategy: strategies.variadic,\n }),\n };\n}\nexport function getNamedFormat(formats, type, name, onError) {\n var formatType = formats && formats[type];\n var format;\n if (formatType) {\n format = formatType[name];\n }\n if (format) {\n return format;\n }\n onError(new UnsupportedFormatterError(\"No \".concat(type, \" format named: \").concat(name)));\n}\n","import { __assign } from \"tslib\";\nimport * as React from 'react';\nimport { invariant } from '@formatjs/ecma402-abstract';\nimport { DEFAULT_INTL_CONFIG as CORE_DEFAULT_INTL_CONFIG } from '@formatjs/intl';\nexport function invariantIntlContext(intl) {\n invariant(intl, '[React Intl] Could not find required `intl` object. ' +\n ' needs to exist in the component ancestry.');\n}\nexport var DEFAULT_INTL_CONFIG = __assign(__assign({}, CORE_DEFAULT_INTL_CONFIG), { textComponent: React.Fragment });\n/**\n * Takes a `formatXMLElementFn`, and composes it in function, which passes\n * argument `parts` through, assigning unique key to each part, to prevent\n * \"Each child in a list should have a unique \"key\"\" React error.\n * @param formatXMLElementFn\n */\nexport function assignUniqueKeysToParts(formatXMLElementFn) {\n return function (parts) {\n // eslint-disable-next-line prefer-rest-params\n return formatXMLElementFn(React.Children.toArray(parts));\n };\n}\nexport function shallowEqual(objA, objB) {\n if (objA === objB) {\n return true;\n }\n if (!objA || !objB) {\n return false;\n }\n var aKeys = Object.keys(objA);\n var bKeys = Object.keys(objB);\n var len = aKeys.length;\n if (bKeys.length !== len) {\n return false;\n }\n for (var i = 0; i < len; i++) {\n var key = aKeys[i];\n if (objA[key] !== objB[key] ||\n !Object.prototype.hasOwnProperty.call(objB, key)) {\n return false;\n }\n }\n return true;\n}\n","import { __assign } from \"tslib\";\nimport { invariant } from '@formatjs/ecma402-abstract';\nimport { IntlMessageFormat, } from 'intl-messageformat';\nimport { MissingTranslationError, MessageFormatError } from './error';\nimport { TYPE } from '@formatjs/icu-messageformat-parser';\nfunction setTimeZoneInOptions(opts, timeZone) {\n return Object.keys(opts).reduce(function (all, k) {\n all[k] = __assign({ timeZone: timeZone }, opts[k]);\n return all;\n }, {});\n}\nfunction deepMergeOptions(opts1, opts2) {\n var keys = Object.keys(__assign(__assign({}, opts1), opts2));\n return keys.reduce(function (all, k) {\n all[k] = __assign(__assign({}, (opts1[k] || {})), (opts2[k] || {}));\n return all;\n }, {});\n}\nfunction deepMergeFormatsAndSetTimeZone(f1, timeZone) {\n if (!timeZone) {\n return f1;\n }\n var mfFormats = IntlMessageFormat.formats;\n return __assign(__assign(__assign({}, mfFormats), f1), { date: deepMergeOptions(setTimeZoneInOptions(mfFormats.date, timeZone), setTimeZoneInOptions(f1.date || {}, timeZone)), time: deepMergeOptions(setTimeZoneInOptions(mfFormats.time, timeZone), setTimeZoneInOptions(f1.time || {}, timeZone)) });\n}\nexport var formatMessage = function (_a, state, messageDescriptor, values, opts) {\n var locale = _a.locale, formats = _a.formats, messages = _a.messages, defaultLocale = _a.defaultLocale, defaultFormats = _a.defaultFormats, fallbackOnEmptyString = _a.fallbackOnEmptyString, onError = _a.onError, timeZone = _a.timeZone, defaultRichTextElements = _a.defaultRichTextElements;\n if (messageDescriptor === void 0) { messageDescriptor = { id: '' }; }\n var msgId = messageDescriptor.id, defaultMessage = messageDescriptor.defaultMessage;\n // `id` is a required field of a Message Descriptor.\n invariant(!!msgId, \"[@formatjs/intl] An `id` must be provided to format a message. You can either:\\n1. Configure your build toolchain with [babel-plugin-formatjs](https://formatjs.io/docs/tooling/babel-plugin)\\nor [@formatjs/ts-transformer](https://formatjs.io/docs/tooling/ts-transformer) OR\\n2. Configure your `eslint` config to include [eslint-plugin-formatjs](https://formatjs.io/docs/tooling/linter#enforce-id)\\nto autofix this issue\");\n var id = String(msgId);\n var message = \n // In case messages is Object.create(null)\n // e.g import('foo.json') from webpack)\n // See https://github.com/formatjs/formatjs/issues/1914\n messages &&\n Object.prototype.hasOwnProperty.call(messages, id) &&\n messages[id];\n // IMPORTANT: Hot path if `message` is AST with a single literal node\n if (Array.isArray(message) &&\n message.length === 1 &&\n message[0].type === TYPE.literal) {\n return message[0].value;\n }\n // IMPORTANT: Hot path straight lookup for performance\n if (!values &&\n message &&\n typeof message === 'string' &&\n !defaultRichTextElements) {\n return message.replace(/'\\{(.*?)\\}'/gi, \"{$1}\");\n }\n values = __assign(__assign({}, defaultRichTextElements), (values || {}));\n formats = deepMergeFormatsAndSetTimeZone(formats, timeZone);\n defaultFormats = deepMergeFormatsAndSetTimeZone(defaultFormats, timeZone);\n if (!message) {\n if (fallbackOnEmptyString === false && message === '') {\n return message;\n }\n if (!defaultMessage ||\n (locale && locale.toLowerCase() !== defaultLocale.toLowerCase())) {\n // This prevents warnings from littering the console in development\n // when no `messages` are passed into the for the\n // default locale.\n onError(new MissingTranslationError(messageDescriptor, locale));\n }\n if (defaultMessage) {\n try {\n var formatter = state.getMessageFormat(defaultMessage, defaultLocale, defaultFormats, opts);\n return formatter.format(values);\n }\n catch (e) {\n onError(new MessageFormatError(\"Error formatting default message for: \\\"\".concat(id, \"\\\", rendering default message verbatim\"), locale, messageDescriptor, e));\n return typeof defaultMessage === 'string' ? defaultMessage : id;\n }\n }\n return id;\n }\n // We have the translated message\n try {\n var formatter = state.getMessageFormat(message, locale, formats, __assign({ formatters: state }, (opts || {})));\n return formatter.format(values);\n }\n catch (e) {\n onError(new MessageFormatError(\"Error formatting message: \\\"\".concat(id, \"\\\", using \").concat(defaultMessage ? 'default message' : 'id', \" as fallback.\"), locale, messageDescriptor, e));\n }\n if (defaultMessage) {\n try {\n var formatter = state.getMessageFormat(defaultMessage, defaultLocale, defaultFormats, opts);\n return formatter.format(values);\n }\n catch (e) {\n onError(new MessageFormatError(\"Error formatting the default message for: \\\"\".concat(id, \"\\\", rendering message verbatim\"), locale, messageDescriptor, e));\n }\n }\n if (typeof message === 'string') {\n return message;\n }\n if (typeof defaultMessage === 'string') {\n return defaultMessage;\n }\n return id;\n};\n","import { getNamedFormat, filterProps } from './utils';\nimport { IntlError, IntlErrorCode } from './error';\nvar NUMBER_FORMAT_OPTIONS = [\n 'style',\n 'currency',\n 'currencyDisplay',\n 'unit',\n 'unitDisplay',\n 'useGrouping',\n 'minimumIntegerDigits',\n 'minimumFractionDigits',\n 'maximumFractionDigits',\n 'minimumSignificantDigits',\n 'maximumSignificantDigits',\n // ES2020 NumberFormat\n 'compactDisplay',\n 'currencyDisplay',\n 'currencySign',\n 'notation',\n 'signDisplay',\n 'unit',\n 'unitDisplay',\n 'numberingSystem',\n];\nexport function getFormatter(_a, getNumberFormat, options) {\n var locale = _a.locale, formats = _a.formats, onError = _a.onError;\n if (options === void 0) { options = {}; }\n var format = options.format;\n var defaults = ((format &&\n getNamedFormat(formats, 'number', format, onError)) ||\n {});\n var filteredOptions = filterProps(options, NUMBER_FORMAT_OPTIONS, defaults);\n return getNumberFormat(locale, filteredOptions);\n}\nexport function formatNumber(config, getNumberFormat, value, options) {\n if (options === void 0) { options = {}; }\n try {\n return getFormatter(config, getNumberFormat, options).format(value);\n }\n catch (e) {\n config.onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting number.', e));\n }\n return String(value);\n}\nexport function formatNumberToParts(config, getNumberFormat, value, options) {\n if (options === void 0) { options = {}; }\n try {\n return getFormatter(config, getNumberFormat, options).formatToParts(value);\n }\n catch (e) {\n config.onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting number.', e));\n }\n return [];\n}\n","import { getNamedFormat, filterProps } from './utils';\nimport { FormatError, ErrorCode } from 'intl-messageformat';\nimport { IntlFormatError } from './error';\nvar RELATIVE_TIME_FORMAT_OPTIONS = ['numeric', 'style'];\nfunction getFormatter(_a, getRelativeTimeFormat, options) {\n var locale = _a.locale, formats = _a.formats, onError = _a.onError;\n if (options === void 0) { options = {}; }\n var format = options.format;\n var defaults = (!!format && getNamedFormat(formats, 'relative', format, onError)) || {};\n var filteredOptions = filterProps(options, RELATIVE_TIME_FORMAT_OPTIONS, defaults);\n return getRelativeTimeFormat(locale, filteredOptions);\n}\nexport function formatRelativeTime(config, getRelativeTimeFormat, value, unit, options) {\n if (options === void 0) { options = {}; }\n if (!unit) {\n unit = 'second';\n }\n var RelativeTimeFormat = Intl.RelativeTimeFormat;\n if (!RelativeTimeFormat) {\n config.onError(new FormatError(\"Intl.RelativeTimeFormat is not available in this environment.\\nTry polyfilling it using \\\"@formatjs/intl-relativetimeformat\\\"\\n\", ErrorCode.MISSING_INTL_API));\n }\n try {\n return getFormatter(config, getRelativeTimeFormat, options).format(value, unit);\n }\n catch (e) {\n config.onError(new IntlFormatError('Error formatting relative time.', config.locale, e));\n }\n return String(value);\n}\n","import { __assign } from \"tslib\";\nimport { filterProps, getNamedFormat } from './utils';\nimport { IntlError, IntlErrorCode } from './error';\nvar DATE_TIME_FORMAT_OPTIONS = [\n 'formatMatcher',\n 'timeZone',\n 'hour12',\n 'weekday',\n 'era',\n 'year',\n 'month',\n 'day',\n 'hour',\n 'minute',\n 'second',\n 'timeZoneName',\n 'hourCycle',\n 'dateStyle',\n 'timeStyle',\n 'calendar',\n // 'dayPeriod',\n 'numberingSystem',\n 'fractionalSecondDigits',\n];\nexport function getFormatter(_a, type, getDateTimeFormat, options) {\n var locale = _a.locale, formats = _a.formats, onError = _a.onError, timeZone = _a.timeZone;\n if (options === void 0) { options = {}; }\n var format = options.format;\n var defaults = __assign(__assign({}, (timeZone && { timeZone: timeZone })), (format && getNamedFormat(formats, type, format, onError)));\n var filteredOptions = filterProps(options, DATE_TIME_FORMAT_OPTIONS, defaults);\n if (type === 'time' &&\n !filteredOptions.hour &&\n !filteredOptions.minute &&\n !filteredOptions.second &&\n !filteredOptions.timeStyle &&\n !filteredOptions.dateStyle) {\n // Add default formatting options if hour, minute, or second isn't defined.\n filteredOptions = __assign(__assign({}, filteredOptions), { hour: 'numeric', minute: 'numeric' });\n }\n return getDateTimeFormat(locale, filteredOptions);\n}\nexport function formatDate(config, getDateTimeFormat) {\n var _a = [];\n for (var _i = 2; _i < arguments.length; _i++) {\n _a[_i - 2] = arguments[_i];\n }\n var value = _a[0], _b = _a[1], options = _b === void 0 ? {} : _b;\n var date = typeof value === 'string' ? new Date(value || 0) : value;\n try {\n return getFormatter(config, 'date', getDateTimeFormat, options).format(date);\n }\n catch (e) {\n config.onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting date.', e));\n }\n return String(date);\n}\nexport function formatTime(config, getDateTimeFormat) {\n var _a = [];\n for (var _i = 2; _i < arguments.length; _i++) {\n _a[_i - 2] = arguments[_i];\n }\n var value = _a[0], _b = _a[1], options = _b === void 0 ? {} : _b;\n var date = typeof value === 'string' ? new Date(value || 0) : value;\n try {\n return getFormatter(config, 'time', getDateTimeFormat, options).format(date);\n }\n catch (e) {\n config.onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting time.', e));\n }\n return String(date);\n}\nexport function formatDateTimeRange(config, getDateTimeFormat) {\n var _a = [];\n for (var _i = 2; _i < arguments.length; _i++) {\n _a[_i - 2] = arguments[_i];\n }\n var from = _a[0], to = _a[1], _b = _a[2], options = _b === void 0 ? {} : _b;\n var timeZone = config.timeZone, locale = config.locale, onError = config.onError;\n var filteredOptions = filterProps(options, DATE_TIME_FORMAT_OPTIONS, timeZone ? { timeZone: timeZone } : {});\n try {\n return getDateTimeFormat(locale, filteredOptions).formatRange(from, to);\n }\n catch (e) {\n onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting date time range.', e));\n }\n return String(from);\n}\nexport function formatDateToParts(config, getDateTimeFormat) {\n var _a = [];\n for (var _i = 2; _i < arguments.length; _i++) {\n _a[_i - 2] = arguments[_i];\n }\n var value = _a[0], _b = _a[1], options = _b === void 0 ? {} : _b;\n var date = typeof value === 'string' ? new Date(value || 0) : value;\n try {\n return getFormatter(config, 'date', getDateTimeFormat, options).formatToParts(date); // TODO: remove this when https://github.com/microsoft/TypeScript/pull/50402 is merged\n }\n catch (e) {\n config.onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting date.', e));\n }\n return [];\n}\nexport function formatTimeToParts(config, getDateTimeFormat) {\n var _a = [];\n for (var _i = 2; _i < arguments.length; _i++) {\n _a[_i - 2] = arguments[_i];\n }\n var value = _a[0], _b = _a[1], options = _b === void 0 ? {} : _b;\n var date = typeof value === 'string' ? new Date(value || 0) : value;\n try {\n return getFormatter(config, 'time', getDateTimeFormat, options).formatToParts(date); // TODO: remove this when https://github.com/microsoft/TypeScript/pull/50402 is merged\n }\n catch (e) {\n config.onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting time.', e));\n }\n return [];\n}\n","import { filterProps } from './utils';\nimport { IntlFormatError } from './error';\nimport { ErrorCode, FormatError } from 'intl-messageformat';\nvar PLURAL_FORMAT_OPTIONS = ['type'];\nexport function formatPlural(_a, getPluralRules, value, options) {\n var locale = _a.locale, onError = _a.onError;\n if (options === void 0) { options = {}; }\n if (!Intl.PluralRules) {\n onError(new FormatError(\"Intl.PluralRules is not available in this environment.\\nTry polyfilling it using \\\"@formatjs/intl-pluralrules\\\"\\n\", ErrorCode.MISSING_INTL_API));\n }\n var filteredOptions = filterProps(options, PLURAL_FORMAT_OPTIONS);\n try {\n return getPluralRules(locale, filteredOptions).select(value);\n }\n catch (e) {\n onError(new IntlFormatError('Error formatting plural.', locale, e));\n }\n return 'other';\n}\n","import { __assign } from \"tslib\";\nimport { filterProps } from './utils';\nimport { FormatError, ErrorCode } from 'intl-messageformat';\nimport { IntlError, IntlErrorCode } from './error';\nvar LIST_FORMAT_OPTIONS = [\n 'type',\n 'style',\n];\nvar now = Date.now();\nfunction generateToken(i) {\n return \"\".concat(now, \"_\").concat(i, \"_\").concat(now);\n}\nexport function formatList(opts, getListFormat, values, options) {\n if (options === void 0) { options = {}; }\n var results = formatListToParts(opts, getListFormat, values, options).reduce(function (all, el) {\n var val = el.value;\n if (typeof val !== 'string') {\n all.push(val);\n }\n else if (typeof all[all.length - 1] === 'string') {\n all[all.length - 1] += val;\n }\n else {\n all.push(val);\n }\n return all;\n }, []);\n return results.length === 1 ? results[0] : results.length === 0 ? '' : results;\n}\nexport function formatListToParts(_a, getListFormat, values, options) {\n var locale = _a.locale, onError = _a.onError;\n if (options === void 0) { options = {}; }\n var ListFormat = Intl.ListFormat;\n if (!ListFormat) {\n onError(new FormatError(\"Intl.ListFormat is not available in this environment.\\nTry polyfilling it using \\\"@formatjs/intl-listformat\\\"\\n\", ErrorCode.MISSING_INTL_API));\n }\n var filteredOptions = filterProps(options, LIST_FORMAT_OPTIONS);\n try {\n var richValues_1 = {};\n var serializedValues = values.map(function (v, i) {\n if (typeof v === 'object') {\n var id = generateToken(i);\n richValues_1[id] = v;\n return id;\n }\n return String(v);\n });\n return getListFormat(locale, filteredOptions)\n .formatToParts(serializedValues)\n .map(function (part) {\n return part.type === 'literal'\n ? part\n : __assign(__assign({}, part), { value: richValues_1[part.value] || part.value });\n });\n }\n catch (e) {\n onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting list.', e));\n }\n // @ts-ignore\n return values;\n}\n","import { filterProps } from './utils';\nimport { FormatError, ErrorCode } from 'intl-messageformat';\nimport { IntlErrorCode, IntlError } from './error';\nvar DISPLAY_NAMES_OPTONS = [\n 'style',\n 'type',\n 'fallback',\n 'languageDisplay',\n];\nexport function formatDisplayName(_a, getDisplayNames, value, options) {\n var locale = _a.locale, onError = _a.onError;\n var DisplayNames = Intl.DisplayNames;\n if (!DisplayNames) {\n onError(new FormatError(\"Intl.DisplayNames is not available in this environment.\\nTry polyfilling it using \\\"@formatjs/intl-displaynames\\\"\\n\", ErrorCode.MISSING_INTL_API));\n }\n var filteredOptions = filterProps(options, DISPLAY_NAMES_OPTONS);\n try {\n return getDisplayNames(locale, filteredOptions).of(value);\n }\n catch (e) {\n onError(new IntlError(IntlErrorCode.FORMAT_ERROR, 'Error formatting display name.', e));\n }\n}\n","import { __assign } from \"tslib\";\nimport { createFormatters, DEFAULT_INTL_CONFIG } from './utils';\nimport { InvalidConfigError, MissingDataError } from './error';\nimport { formatNumber, formatNumberToParts } from './number';\nimport { formatRelativeTime } from './relativeTime';\nimport { formatDate, formatDateToParts, formatTime, formatTimeToParts, formatDateTimeRange, } from './dateTime';\nimport { formatPlural } from './plural';\nimport { formatMessage } from './message';\nimport { formatList, formatListToParts } from './list';\nimport { formatDisplayName } from './displayName';\nfunction messagesContainString(messages) {\n var firstMessage = messages ? messages[Object.keys(messages)[0]] : undefined;\n return typeof firstMessage === 'string';\n}\nfunction verifyConfigMessages(config) {\n if (config.onWarn &&\n config.defaultRichTextElements &&\n messagesContainString(config.messages || {})) {\n config.onWarn(\"[@formatjs/intl] \\\"defaultRichTextElements\\\" was specified but \\\"message\\\" was not pre-compiled. \\nPlease consider using \\\"@formatjs/cli\\\" to pre-compile your messages for performance.\\nFor more details see https://formatjs.io/docs/getting-started/message-distribution\");\n }\n}\n/**\n * Create intl object\n * @param config intl config\n * @param cache cache for formatter instances to prevent memory leak\n */\nexport function createIntl(config, cache) {\n var formatters = createFormatters(cache);\n var resolvedConfig = __assign(__assign({}, DEFAULT_INTL_CONFIG), config);\n var locale = resolvedConfig.locale, defaultLocale = resolvedConfig.defaultLocale, onError = resolvedConfig.onError;\n if (!locale) {\n if (onError) {\n onError(new InvalidConfigError(\"\\\"locale\\\" was not configured, using \\\"\".concat(defaultLocale, \"\\\" as fallback. See https://formatjs.io/docs/react-intl/api#intlshape for more details\")));\n }\n // Since there's no registered locale data for `locale`, this will\n // fallback to the `defaultLocale` to make sure things can render.\n // The `messages` are overridden to the `defaultProps` empty object\n // to maintain referential equality across re-renders. It's assumed\n // each contains a `defaultMessage` prop.\n resolvedConfig.locale = resolvedConfig.defaultLocale || 'en';\n }\n else if (!Intl.NumberFormat.supportedLocalesOf(locale).length && onError) {\n onError(new MissingDataError(\"Missing locale data for locale: \\\"\".concat(locale, \"\\\" in Intl.NumberFormat. Using default locale: \\\"\").concat(defaultLocale, \"\\\" as fallback. See https://formatjs.io/docs/react-intl#runtime-requirements for more details\")));\n }\n else if (!Intl.DateTimeFormat.supportedLocalesOf(locale).length &&\n onError) {\n onError(new MissingDataError(\"Missing locale data for locale: \\\"\".concat(locale, \"\\\" in Intl.DateTimeFormat. Using default locale: \\\"\").concat(defaultLocale, \"\\\" as fallback. See https://formatjs.io/docs/react-intl#runtime-requirements for more details\")));\n }\n verifyConfigMessages(resolvedConfig);\n return __assign(__assign({}, resolvedConfig), { formatters: formatters, formatNumber: formatNumber.bind(null, resolvedConfig, formatters.getNumberFormat), formatNumberToParts: formatNumberToParts.bind(null, resolvedConfig, formatters.getNumberFormat), formatRelativeTime: formatRelativeTime.bind(null, resolvedConfig, formatters.getRelativeTimeFormat), formatDate: formatDate.bind(null, resolvedConfig, formatters.getDateTimeFormat), formatDateToParts: formatDateToParts.bind(null, resolvedConfig, formatters.getDateTimeFormat), formatTime: formatTime.bind(null, resolvedConfig, formatters.getDateTimeFormat), formatDateTimeRange: formatDateTimeRange.bind(null, resolvedConfig, formatters.getDateTimeFormat), formatTimeToParts: formatTimeToParts.bind(null, resolvedConfig, formatters.getDateTimeFormat), formatPlural: formatPlural.bind(null, resolvedConfig, formatters.getPluralRules), \n // @ts-expect-error TODO: will get to this later\n formatMessage: formatMessage.bind(null, resolvedConfig, formatters), \n // @ts-expect-error TODO: will get to this later\n $t: formatMessage.bind(null, resolvedConfig, formatters), formatList: formatList.bind(null, resolvedConfig, formatters.getListFormat), formatListToParts: formatListToParts.bind(null, resolvedConfig, formatters.getListFormat), formatDisplayName: formatDisplayName.bind(null, resolvedConfig, formatters.getDisplayNames) });\n}\n","/*\n * Copyright 2015, Yahoo Inc.\n * Copyrights licensed under the New BSD License.\n * See the accompanying LICENSE file for terms.\n */\nimport { __assign, __extends, __rest, __spreadArray } from \"tslib\";\nimport * as React from 'react';\nimport { Provider } from './injectIntl';\nimport { DEFAULT_INTL_CONFIG, invariantIntlContext, assignUniqueKeysToParts, shallowEqual, } from '../utils';\nimport { formatMessage as coreFormatMessage, createIntl as coreCreateIntl, createIntlCache, } from '@formatjs/intl';\nimport { isFormatXMLElementFn, } from 'intl-messageformat';\nfunction processIntlConfig(config) {\n return {\n locale: config.locale,\n timeZone: config.timeZone,\n fallbackOnEmptyString: config.fallbackOnEmptyString,\n formats: config.formats,\n textComponent: config.textComponent,\n messages: config.messages,\n defaultLocale: config.defaultLocale,\n defaultFormats: config.defaultFormats,\n onError: config.onError,\n onWarn: config.onWarn,\n wrapRichTextChunksInFragment: config.wrapRichTextChunksInFragment,\n defaultRichTextElements: config.defaultRichTextElements,\n };\n}\nfunction assignUniqueKeysToFormatXMLElementFnArgument(values) {\n if (!values) {\n return values;\n }\n return Object.keys(values).reduce(function (acc, k) {\n var v = values[k];\n acc[k] = isFormatXMLElementFn(v)\n ? assignUniqueKeysToParts(v)\n : v;\n return acc;\n }, {});\n}\nvar formatMessage = function (config, formatters, descriptor, rawValues) {\n var rest = [];\n for (var _i = 4; _i < arguments.length; _i++) {\n rest[_i - 4] = arguments[_i];\n }\n var values = assignUniqueKeysToFormatXMLElementFnArgument(rawValues);\n var chunks = coreFormatMessage.apply(void 0, __spreadArray([config,\n formatters,\n descriptor,\n values], rest, false));\n if (Array.isArray(chunks)) {\n return React.Children.toArray(chunks);\n }\n return chunks;\n};\n/**\n * Create intl object\n * @param config intl config\n * @param cache cache for formatter instances to prevent memory leak\n */\nexport var createIntl = function (_a, cache) {\n var rawDefaultRichTextElements = _a.defaultRichTextElements, config = __rest(_a, [\"defaultRichTextElements\"]);\n var defaultRichTextElements = assignUniqueKeysToFormatXMLElementFnArgument(rawDefaultRichTextElements);\n var coreIntl = coreCreateIntl(__assign(__assign(__assign({}, DEFAULT_INTL_CONFIG), config), { defaultRichTextElements: defaultRichTextElements }), cache);\n var resolvedConfig = {\n locale: coreIntl.locale,\n timeZone: coreIntl.timeZone,\n fallbackOnEmptyString: coreIntl.fallbackOnEmptyString,\n formats: coreIntl.formats,\n defaultLocale: coreIntl.defaultLocale,\n defaultFormats: coreIntl.defaultFormats,\n messages: coreIntl.messages,\n onError: coreIntl.onError,\n defaultRichTextElements: defaultRichTextElements,\n };\n return __assign(__assign({}, coreIntl), { \n // @ts-expect-error fix this\n formatMessage: formatMessage.bind(null, resolvedConfig, coreIntl.formatters), \n // @ts-expect-error fix this\n $t: formatMessage.bind(null, resolvedConfig, coreIntl.formatters) });\n};\nvar IntlProvider = /** @class */ (function (_super) {\n __extends(IntlProvider, _super);\n function IntlProvider() {\n var _this = _super !== null && _super.apply(this, arguments) || this;\n _this.cache = createIntlCache();\n _this.state = {\n cache: _this.cache,\n intl: createIntl(processIntlConfig(_this.props), _this.cache),\n prevConfig: processIntlConfig(_this.props),\n };\n return _this;\n }\n IntlProvider.getDerivedStateFromProps = function (props, _a) {\n var prevConfig = _a.prevConfig, cache = _a.cache;\n var config = processIntlConfig(props);\n if (!shallowEqual(prevConfig, config)) {\n return {\n intl: createIntl(config, cache),\n prevConfig: config,\n };\n }\n return null;\n };\n IntlProvider.prototype.render = function () {\n invariantIntlContext(this.state.intl);\n return React.createElement(Provider, { value: this.state.intl }, this.props.children);\n };\n IntlProvider.displayName = 'IntlProvider';\n IntlProvider.defaultProps = DEFAULT_INTL_CONFIG;\n return IntlProvider;\n}(React.PureComponent));\nexport default IntlProvider;\n","export default function _arrayWithHoles(arr) {\n if (Array.isArray(arr)) return arr;\n}","export default function _arrayLikeToArray(arr, len) {\n if (len == null || len > arr.length) len = arr.length;\n for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];\n return arr2;\n}","import arrayLikeToArray from \"./arrayLikeToArray.js\";\nexport default function _unsupportedIterableToArray(o, minLen) {\n if (!o) return;\n if (typeof o === \"string\") return arrayLikeToArray(o, minLen);\n var n = Object.prototype.toString.call(o).slice(8, -1);\n if (n === \"Object\" && o.constructor) n = o.constructor.name;\n if (n === \"Map\" || n === \"Set\") return Array.from(o);\n if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return arrayLikeToArray(o, minLen);\n}","export default function _nonIterableRest() {\n throw new TypeError(\"Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}","import arrayWithHoles from \"./arrayWithHoles.js\";\nimport iterableToArrayLimit from \"./iterableToArrayLimit.js\";\nimport unsupportedIterableToArray from \"./unsupportedIterableToArray.js\";\nimport nonIterableRest from \"./nonIterableRest.js\";\nexport default function _slicedToArray(arr, i) {\n return arrayWithHoles(arr) || iterableToArrayLimit(arr, i) || unsupportedIterableToArray(arr, i) || nonIterableRest();\n}","export default function _iterableToArrayLimit(arr, i) {\n var _i = null == arr ? null : \"undefined\" != typeof Symbol && arr[Symbol.iterator] || arr[\"@@iterator\"];\n if (null != _i) {\n var _s,\n _e,\n _x,\n _r,\n _arr = [],\n _n = !0,\n _d = !1;\n try {\n if (_x = (_i = _i.call(arr)).next, 0 === i) {\n if (Object(_i) !== _i) return;\n _n = !1;\n } else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0);\n } catch (err) {\n _d = !0, _e = err;\n } finally {\n try {\n if (!_n && null != _i[\"return\"] && (_r = _i[\"return\"](), Object(_r) !== _r)) return;\n } finally {\n if (_d) throw _e;\n }\n }\n return _arr;\n }\n}","export default function _iterableToArray(iter) {\n if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter);\n}","import arrayWithoutHoles from \"./arrayWithoutHoles.js\";\nimport iterableToArray from \"./iterableToArray.js\";\nimport unsupportedIterableToArray from \"./unsupportedIterableToArray.js\";\nimport nonIterableSpread from \"./nonIterableSpread.js\";\nexport default function _toConsumableArray(arr) {\n return arrayWithoutHoles(arr) || iterableToArray(arr) || unsupportedIterableToArray(arr) || nonIterableSpread();\n}","import arrayLikeToArray from \"./arrayLikeToArray.js\";\nexport default function _arrayWithoutHoles(arr) {\n if (Array.isArray(arr)) return arrayLikeToArray(arr);\n}","export default function _nonIterableSpread() {\n throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}","export default function _classCallCheck(instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n}","export default function _typeof(obj) {\n \"@babel/helpers - typeof\";\n\n return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) {\n return typeof obj;\n } : function (obj) {\n return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n }, _typeof(obj);\n}","import _typeof from \"./typeof.js\";\nimport toPrimitive from \"./toPrimitive.js\";\nexport default function _toPropertyKey(arg) {\n var key = toPrimitive(arg, \"string\");\n return _typeof(key) === \"symbol\" ? key : String(key);\n}","import _typeof from \"./typeof.js\";\nexport default function _toPrimitive(input, hint) {\n if (_typeof(input) !== \"object\" || input === null) return input;\n var prim = input[Symbol.toPrimitive];\n if (prim !== undefined) {\n var res = prim.call(input, hint || \"default\");\n if (_typeof(res) !== \"object\") return res;\n throw new TypeError(\"@@toPrimitive must return a primitive value.\");\n }\n return (hint === \"string\" ? String : Number)(input);\n}","import toPropertyKey from \"./toPropertyKey.js\";\nfunction _defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, toPropertyKey(descriptor.key), descriptor);\n }\n}\nexport default function _createClass(Constructor, protoProps, staticProps) {\n if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n if (staticProps) _defineProperties(Constructor, staticProps);\n Object.defineProperty(Constructor, \"prototype\", {\n writable: false\n });\n return Constructor;\n}","import getPrototypeOf from \"./getPrototypeOf.js\";\nimport isNativeReflectConstruct from \"./isNativeReflectConstruct.js\";\nimport possibleConstructorReturn from \"./possibleConstructorReturn.js\";\nexport default function _createSuper(Derived) {\n var hasNativeReflectConstruct = isNativeReflectConstruct();\n return function _createSuperInternal() {\n var Super = getPrototypeOf(Derived),\n result;\n if (hasNativeReflectConstruct) {\n var NewTarget = getPrototypeOf(this).constructor;\n result = Reflect.construct(Super, arguments, NewTarget);\n } else {\n result = Super.apply(this, arguments);\n }\n return possibleConstructorReturn(this, result);\n };\n}","import _typeof from \"./typeof.js\";\nimport assertThisInitialized from \"./assertThisInitialized.js\";\nexport default function _possibleConstructorReturn(self, call) {\n if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) {\n return call;\n } else if (call !== void 0) {\n throw new TypeError(\"Derived constructors may only return object or undefined\");\n }\n return assertThisInitialized(self);\n}","////////////////////////////////////////////////////////////////////////////////\n//#region Types and Constants\n////////////////////////////////////////////////////////////////////////////////\n\n/**\n * Actions represent the type of change to a location value.\n */\nexport enum Action {\n /**\n * A POP indicates a change to an arbitrary index in the history stack, such\n * as a back or forward navigation. It does not describe the direction of the\n * navigation, only that the current index changed.\n *\n * Note: This is the default action for newly created history objects.\n */\n Pop = \"POP\",\n\n /**\n * A PUSH indicates a new entry being added to the history stack, such as when\n * a link is clicked and a new page loads. When this happens, all subsequent\n * entries in the stack are lost.\n */\n Push = \"PUSH\",\n\n /**\n * A REPLACE indicates the entry at the current index in the history stack\n * being replaced by a new one.\n */\n Replace = \"REPLACE\",\n}\n\n/**\n * The pathname, search, and hash values of a URL.\n */\nexport interface Path {\n /**\n * A URL pathname, beginning with a /.\n */\n pathname: string;\n\n /**\n * A URL search string, beginning with a ?.\n */\n search: string;\n\n /**\n * A URL fragment identifier, beginning with a #.\n */\n hash: string;\n}\n\n/**\n * An entry in a history stack. A location contains information about the\n * URL path, as well as possibly some arbitrary state and a key.\n */\nexport interface Location extends Path {\n /**\n * A value of arbitrary data associated with this location.\n */\n state: any;\n\n /**\n * A unique string associated with this location. May be used to safely store\n * and retrieve data in some other storage API, like `localStorage`.\n *\n * Note: This value is always \"default\" on the initial location.\n */\n key: string;\n}\n\n/**\n * A change to the current location.\n */\nexport interface Update {\n /**\n * The action that triggered the change.\n */\n action: Action;\n\n /**\n * The new location.\n */\n location: Location;\n\n /**\n * The delta between this location and the former location in the history stack\n */\n delta: number | null;\n}\n\n/**\n * A function that receives notifications about location changes.\n */\nexport interface Listener {\n (update: Update): void;\n}\n\n/**\n * Describes a location that is the destination of some navigation, either via\n * `history.push` or `history.replace`. May be either a URL or the pieces of a\n * URL path.\n */\nexport type To = string | Partial;\n\n/**\n * A history is an interface to the navigation stack. The history serves as the\n * source of truth for the current location, as well as provides a set of\n * methods that may be used to change it.\n *\n * It is similar to the DOM's `window.history` object, but with a smaller, more\n * focused API.\n */\nexport interface History {\n /**\n * The last action that modified the current location. This will always be\n * Action.Pop when a history instance is first created. This value is mutable.\n */\n readonly action: Action;\n\n /**\n * The current location. This value is mutable.\n */\n readonly location: Location;\n\n /**\n * Returns a valid href for the given `to` value that may be used as\n * the value of an attribute.\n *\n * @param to - The destination URL\n */\n createHref(to: To): string;\n\n /**\n * Returns a URL for the given `to` value\n *\n * @param to - The destination URL\n */\n createURL(to: To): URL;\n\n /**\n * Encode a location the same way window.history would do (no-op for memory\n * history) so we ensure our PUSH/REPLACE navigations for data routers\n * behave the same as POP\n *\n * @param to Unencoded path\n */\n encodeLocation(to: To): Path;\n\n /**\n * Pushes a new location onto the history stack, increasing its length by one.\n * If there were any entries in the stack after the current one, they are\n * lost.\n *\n * @param to - The new URL\n * @param state - Data to associate with the new location\n */\n push(to: To, state?: any): void;\n\n /**\n * Replaces the current location in the history stack with a new one. The\n * location that was replaced will no longer be available.\n *\n * @param to - The new URL\n * @param state - Data to associate with the new location\n */\n replace(to: To, state?: any): void;\n\n /**\n * Navigates `n` entries backward/forward in the history stack relative to the\n * current index. For example, a \"back\" navigation would use go(-1).\n *\n * @param delta - The delta in the stack index\n */\n go(delta: number): void;\n\n /**\n * Sets up a listener that will be called whenever the current location\n * changes.\n *\n * @param listener - A function that will be called when the location changes\n * @returns unlisten - A function that may be used to stop listening\n */\n listen(listener: Listener): () => void;\n}\n\ntype HistoryState = {\n usr: any;\n key?: string;\n idx: number;\n};\n\nconst PopStateEventType = \"popstate\";\n//#endregion\n\n////////////////////////////////////////////////////////////////////////////////\n//#region Memory History\n////////////////////////////////////////////////////////////////////////////////\n\n/**\n * A user-supplied object that describes a location. Used when providing\n * entries to `createMemoryHistory` via its `initialEntries` option.\n */\nexport type InitialEntry = string | Partial;\n\nexport type MemoryHistoryOptions = {\n initialEntries?: InitialEntry[];\n initialIndex?: number;\n v5Compat?: boolean;\n};\n\n/**\n * A memory history stores locations in memory. This is useful in stateful\n * environments where there is no web browser, such as node tests or React\n * Native.\n */\nexport interface MemoryHistory extends History {\n /**\n * The current index in the history stack.\n */\n readonly index: number;\n}\n\n/**\n * Memory history stores the current location in memory. It is designed for use\n * in stateful non-browser environments like tests and React Native.\n */\nexport function createMemoryHistory(\n options: MemoryHistoryOptions = {}\n): MemoryHistory {\n let { initialEntries = [\"/\"], initialIndex, v5Compat = false } = options;\n let entries: Location[]; // Declare so we can access from createMemoryLocation\n entries = initialEntries.map((entry, index) =>\n createMemoryLocation(\n entry,\n typeof entry === \"string\" ? null : entry.state,\n index === 0 ? \"default\" : undefined\n )\n );\n let index = clampIndex(\n initialIndex == null ? entries.length - 1 : initialIndex\n );\n let action = Action.Pop;\n let listener: Listener | null = null;\n\n function clampIndex(n: number): number {\n return Math.min(Math.max(n, 0), entries.length - 1);\n }\n function getCurrentLocation(): Location {\n return entries[index];\n }\n function createMemoryLocation(\n to: To,\n state: any = null,\n key?: string\n ): Location {\n let location = createLocation(\n entries ? getCurrentLocation().pathname : \"/\",\n to,\n state,\n key\n );\n warning(\n location.pathname.charAt(0) === \"/\",\n `relative pathnames are not supported in memory history: ${JSON.stringify(\n to\n )}`\n );\n return location;\n }\n\n function createHref(to: To) {\n return typeof to === \"string\" ? to : createPath(to);\n }\n\n let history: MemoryHistory = {\n get index() {\n return index;\n },\n get action() {\n return action;\n },\n get location() {\n return getCurrentLocation();\n },\n createHref,\n createURL(to) {\n return new URL(createHref(to), \"http://localhost\");\n },\n encodeLocation(to: To) {\n let path = typeof to === \"string\" ? parsePath(to) : to;\n return {\n pathname: path.pathname || \"\",\n search: path.search || \"\",\n hash: path.hash || \"\",\n };\n },\n push(to, state) {\n action = Action.Push;\n let nextLocation = createMemoryLocation(to, state);\n index += 1;\n entries.splice(index, entries.length, nextLocation);\n if (v5Compat && listener) {\n listener({ action, location: nextLocation, delta: 1 });\n }\n },\n replace(to, state) {\n action = Action.Replace;\n let nextLocation = createMemoryLocation(to, state);\n entries[index] = nextLocation;\n if (v5Compat && listener) {\n listener({ action, location: nextLocation, delta: 0 });\n }\n },\n go(delta) {\n action = Action.Pop;\n let nextIndex = clampIndex(index + delta);\n let nextLocation = entries[nextIndex];\n index = nextIndex;\n if (listener) {\n listener({ action, location: nextLocation, delta });\n }\n },\n listen(fn: Listener) {\n listener = fn;\n return () => {\n listener = null;\n };\n },\n };\n\n return history;\n}\n//#endregion\n\n////////////////////////////////////////////////////////////////////////////////\n//#region Browser History\n////////////////////////////////////////////////////////////////////////////////\n\n/**\n * A browser history stores the current location in regular URLs in a web\n * browser environment. This is the standard for most web apps and provides the\n * cleanest URLs the browser's address bar.\n *\n * @see https://github.com/remix-run/history/tree/main/docs/api-reference.md#browserhistory\n */\nexport interface BrowserHistory extends UrlHistory {}\n\nexport type BrowserHistoryOptions = UrlHistoryOptions;\n\n/**\n * Browser history stores the location in regular URLs. This is the standard for\n * most web apps, but it requires some configuration on the server to ensure you\n * serve the same app at multiple URLs.\n *\n * @see https://github.com/remix-run/history/tree/main/docs/api-reference.md#createbrowserhistory\n */\nexport function createBrowserHistory(\n options: BrowserHistoryOptions = {}\n): BrowserHistory {\n function createBrowserLocation(\n window: Window,\n globalHistory: Window[\"history\"]\n ) {\n let { pathname, search, hash } = window.location;\n return createLocation(\n \"\",\n { pathname, search, hash },\n // state defaults to `null` because `window.history.state` does\n (globalHistory.state && globalHistory.state.usr) || null,\n (globalHistory.state && globalHistory.state.key) || \"default\"\n );\n }\n\n function createBrowserHref(window: Window, to: To) {\n return typeof to === \"string\" ? to : createPath(to);\n }\n\n return getUrlBasedHistory(\n createBrowserLocation,\n createBrowserHref,\n null,\n options\n );\n}\n//#endregion\n\n////////////////////////////////////////////////////////////////////////////////\n//#region Hash History\n////////////////////////////////////////////////////////////////////////////////\n\n/**\n * A hash history stores the current location in the fragment identifier portion\n * of the URL in a web browser environment.\n *\n * This is ideal for apps that do not control the server for some reason\n * (because the fragment identifier is never sent to the server), including some\n * shared hosting environments that do not provide fine-grained controls over\n * which pages are served at which URLs.\n *\n * @see https://github.com/remix-run/history/tree/main/docs/api-reference.md#hashhistory\n */\nexport interface HashHistory extends UrlHistory {}\n\nexport type HashHistoryOptions = UrlHistoryOptions;\n\n/**\n * Hash history stores the location in window.location.hash. This makes it ideal\n * for situations where you don't want to send the location to the server for\n * some reason, either because you do cannot configure it or the URL space is\n * reserved for something else.\n *\n * @see https://github.com/remix-run/history/tree/main/docs/api-reference.md#createhashhistory\n */\nexport function createHashHistory(\n options: HashHistoryOptions = {}\n): HashHistory {\n function createHashLocation(\n window: Window,\n globalHistory: Window[\"history\"]\n ) {\n let {\n pathname = \"/\",\n search = \"\",\n hash = \"\",\n } = parsePath(window.location.hash.substr(1));\n return createLocation(\n \"\",\n { pathname, search, hash },\n // state defaults to `null` because `window.history.state` does\n (globalHistory.state && globalHistory.state.usr) || null,\n (globalHistory.state && globalHistory.state.key) || \"default\"\n );\n }\n\n function createHashHref(window: Window, to: To) {\n let base = window.document.querySelector(\"base\");\n let href = \"\";\n\n if (base && base.getAttribute(\"href\")) {\n let url = window.location.href;\n let hashIndex = url.indexOf(\"#\");\n href = hashIndex === -1 ? url : url.slice(0, hashIndex);\n }\n\n return href + \"#\" + (typeof to === \"string\" ? to : createPath(to));\n }\n\n function validateHashLocation(location: Location, to: To) {\n warning(\n location.pathname.charAt(0) === \"/\",\n `relative pathnames are not supported in hash history.push(${JSON.stringify(\n to\n )})`\n );\n }\n\n return getUrlBasedHistory(\n createHashLocation,\n createHashHref,\n validateHashLocation,\n options\n );\n}\n//#endregion\n\n////////////////////////////////////////////////////////////////////////////////\n//#region UTILS\n////////////////////////////////////////////////////////////////////////////////\n\n/**\n * @private\n */\nexport function invariant(value: boolean, message?: string): asserts value;\nexport function invariant(\n value: T | null | undefined,\n message?: string\n): asserts value is T;\nexport function invariant(value: any, message?: string) {\n if (value === false || value === null || typeof value === \"undefined\") {\n throw new Error(message);\n }\n}\n\nexport function warning(cond: any, message: string) {\n if (!cond) {\n // eslint-disable-next-line no-console\n if (typeof console !== \"undefined\") console.warn(message);\n\n try {\n // Welcome to debugging history!\n //\n // This error is thrown as a convenience so you can more easily\n // find the source for a warning that appears in the console by\n // enabling \"pause on exceptions\" in your JavaScript debugger.\n throw new Error(message);\n // eslint-disable-next-line no-empty\n } catch (e) {}\n }\n}\n\nfunction createKey() {\n return Math.random().toString(36).substr(2, 8);\n}\n\n/**\n * For browser-based histories, we combine the state and key into an object\n */\nfunction getHistoryState(location: Location, index: number): HistoryState {\n return {\n usr: location.state,\n key: location.key,\n idx: index,\n };\n}\n\n/**\n * Creates a Location object with a unique key from the given Path\n */\nexport function createLocation(\n current: string | Location,\n to: To,\n state: any = null,\n key?: string\n): Readonly {\n let location: Readonly = {\n pathname: typeof current === \"string\" ? current : current.pathname,\n search: \"\",\n hash: \"\",\n ...(typeof to === \"string\" ? parsePath(to) : to),\n state,\n // TODO: This could be cleaned up. push/replace should probably just take\n // full Locations now and avoid the need to run through this flow at all\n // But that's a pretty big refactor to the current test suite so going to\n // keep as is for the time being and just let any incoming keys take precedence\n key: (to && (to as Location).key) || key || createKey(),\n };\n return location;\n}\n\n/**\n * Creates a string URL path from the given pathname, search, and hash components.\n */\nexport function createPath({\n pathname = \"/\",\n search = \"\",\n hash = \"\",\n}: Partial) {\n if (search && search !== \"?\")\n pathname += search.charAt(0) === \"?\" ? search : \"?\" + search;\n if (hash && hash !== \"#\")\n pathname += hash.charAt(0) === \"#\" ? hash : \"#\" + hash;\n return pathname;\n}\n\n/**\n * Parses a string URL path into its separate pathname, search, and hash components.\n */\nexport function parsePath(path: string): Partial {\n let parsedPath: Partial = {};\n\n if (path) {\n let hashIndex = path.indexOf(\"#\");\n if (hashIndex >= 0) {\n parsedPath.hash = path.substr(hashIndex);\n path = path.substr(0, hashIndex);\n }\n\n let searchIndex = path.indexOf(\"?\");\n if (searchIndex >= 0) {\n parsedPath.search = path.substr(searchIndex);\n path = path.substr(0, searchIndex);\n }\n\n if (path) {\n parsedPath.pathname = path;\n }\n }\n\n return parsedPath;\n}\n\nexport interface UrlHistory extends History {}\n\nexport type UrlHistoryOptions = {\n window?: Window;\n v5Compat?: boolean;\n};\n\nfunction getUrlBasedHistory(\n getLocation: (window: Window, globalHistory: Window[\"history\"]) => Location,\n createHref: (window: Window, to: To) => string,\n validateLocation: ((location: Location, to: To) => void) | null,\n options: UrlHistoryOptions = {}\n): UrlHistory {\n let { window = document.defaultView!, v5Compat = false } = options;\n let globalHistory = window.history;\n let action = Action.Pop;\n let listener: Listener | null = null;\n\n let index = getIndex()!;\n // Index should only be null when we initialize. If not, it's because the\n // user called history.pushState or history.replaceState directly, in which\n // case we should log a warning as it will result in bugs.\n if (index == null) {\n index = 0;\n globalHistory.replaceState({ ...globalHistory.state, idx: index }, \"\");\n }\n\n function getIndex(): number {\n let state = globalHistory.state || { idx: null };\n return state.idx;\n }\n\n function handlePop() {\n action = Action.Pop;\n let nextIndex = getIndex();\n let delta = nextIndex == null ? null : nextIndex - index;\n index = nextIndex;\n if (listener) {\n listener({ action, location: history.location, delta });\n }\n }\n\n function push(to: To, state?: any) {\n action = Action.Push;\n let location = createLocation(history.location, to, state);\n if (validateLocation) validateLocation(location, to);\n\n index = getIndex() + 1;\n let historyState = getHistoryState(location, index);\n let url = history.createHref(location);\n\n // try...catch because iOS limits us to 100 pushState calls :/\n try {\n globalHistory.pushState(historyState, \"\", url);\n } catch (error) {\n // They are going to lose state here, but there is no real\n // way to warn them about it since the page will refresh...\n window.location.assign(url);\n }\n\n if (v5Compat && listener) {\n listener({ action, location: history.location, delta: 1 });\n }\n }\n\n function replace(to: To, state?: any) {\n action = Action.Replace;\n let location = createLocation(history.location, to, state);\n if (validateLocation) validateLocation(location, to);\n\n index = getIndex();\n let historyState = getHistoryState(location, index);\n let url = history.createHref(location);\n globalHistory.replaceState(historyState, \"\", url);\n\n if (v5Compat && listener) {\n listener({ action, location: history.location, delta: 0 });\n }\n }\n\n function createURL(to: To): URL {\n // window.location.origin is \"null\" (the literal string value) in Firefox\n // under certain conditions, notably when serving from a local HTML file\n // See https://bugzilla.mozilla.org/show_bug.cgi?id=878297\n let base =\n window.location.origin !== \"null\"\n ? window.location.origin\n : window.location.href;\n\n let href = typeof to === \"string\" ? to : createPath(to);\n invariant(\n base,\n `No window.location.(origin|href) available to create URL for href: ${href}`\n );\n return new URL(href, base);\n }\n\n let history: History = {\n get action() {\n return action;\n },\n get location() {\n return getLocation(window, globalHistory);\n },\n listen(fn: Listener) {\n if (listener) {\n throw new Error(\"A history only accepts one active listener\");\n }\n window.addEventListener(PopStateEventType, handlePop);\n listener = fn;\n\n return () => {\n window.removeEventListener(PopStateEventType, handlePop);\n listener = null;\n };\n },\n createHref(to) {\n return createHref(window, to);\n },\n createURL,\n encodeLocation(to) {\n // Encode a Location the same way window.location would\n let url = createURL(to);\n return {\n pathname: url.pathname,\n search: url.search,\n hash: url.hash,\n };\n },\n push,\n replace,\n go(n) {\n return globalHistory.go(n);\n },\n };\n\n return history;\n}\n\n//#endregion\n","import unsupportedIterableToArray from \"./unsupportedIterableToArray.js\";\nexport default function _createForOfIteratorHelper(o, allowArrayLike) {\n var it = typeof Symbol !== \"undefined\" && o[Symbol.iterator] || o[\"@@iterator\"];\n if (!it) {\n if (Array.isArray(o) || (it = unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === \"number\") {\n if (it) o = it;\n var i = 0;\n var F = function F() {};\n return {\n s: F,\n n: function n() {\n if (i >= o.length) return {\n done: true\n };\n return {\n done: false,\n value: o[i++]\n };\n },\n e: function e(_e) {\n throw _e;\n },\n f: F\n };\n }\n throw new TypeError(\"Invalid attempt to iterate non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n }\n var normalCompletion = true,\n didErr = false,\n err;\n return {\n s: function s() {\n it = it.call(o);\n },\n n: function n() {\n var step = it.next();\n normalCompletion = step.done;\n return step;\n },\n e: function e(_e2) {\n didErr = true;\n err = _e2;\n },\n f: function f() {\n try {\n if (!normalCompletion && it[\"return\"] != null) it[\"return\"]();\n } finally {\n if (didErr) throw err;\n }\n }\n };\n}","import type { Location, Path, To } from \"./history\";\nimport { warning, invariant, parsePath } from \"./history\";\n\n/**\n * Map of routeId -> data returned from a loader/action/error\n */\nexport interface RouteData {\n [routeId: string]: any;\n}\n\nexport enum ResultType {\n data = \"data\",\n deferred = \"deferred\",\n redirect = \"redirect\",\n error = \"error\",\n}\n\n/**\n * Successful result from a loader or action\n */\nexport interface SuccessResult {\n type: ResultType.data;\n data: any;\n statusCode?: number;\n headers?: Headers;\n}\n\n/**\n * Successful defer() result from a loader or action\n */\nexport interface DeferredResult {\n type: ResultType.deferred;\n deferredData: DeferredData;\n statusCode?: number;\n headers?: Headers;\n}\n\n/**\n * Redirect result from a loader or action\n */\nexport interface RedirectResult {\n type: ResultType.redirect;\n status: number;\n location: string;\n revalidate: boolean;\n}\n\n/**\n * Unsuccessful result from a loader or action\n */\nexport interface ErrorResult {\n type: ResultType.error;\n error: any;\n headers?: Headers;\n}\n\n/**\n * Result from a loader or action - potentially successful or unsuccessful\n */\nexport type DataResult =\n | SuccessResult\n | DeferredResult\n | RedirectResult\n | ErrorResult;\n\nexport type MutationFormMethod = \"post\" | \"put\" | \"patch\" | \"delete\";\nexport type FormMethod = \"get\" | MutationFormMethod;\n\nexport type FormEncType =\n | \"application/x-www-form-urlencoded\"\n | \"multipart/form-data\";\n\n/**\n * @private\n * Internal interface to pass around for action submissions, not intended for\n * external consumption\n */\nexport interface Submission {\n formMethod: FormMethod;\n formAction: string;\n formEncType: FormEncType;\n formData: FormData;\n}\n\n/**\n * @private\n * Arguments passed to route loader/action functions. Same for now but we keep\n * this as a private implementation detail in case they diverge in the future.\n */\ninterface DataFunctionArgs {\n request: Request;\n params: Params;\n context?: any;\n}\n\n/**\n * Arguments passed to loader functions\n */\nexport interface LoaderFunctionArgs extends DataFunctionArgs {}\n\n/**\n * Arguments passed to action functions\n */\nexport interface ActionFunctionArgs extends DataFunctionArgs {}\n\n/**\n * Route loader function signature\n */\nexport interface LoaderFunction {\n (args: LoaderFunctionArgs): Promise | Response | Promise | any;\n}\n\n/**\n * Route action function signature\n */\nexport interface ActionFunction {\n (args: ActionFunctionArgs): Promise | Response | Promise | any;\n}\n\n/**\n * Route shouldRevalidate function signature. This runs after any submission\n * (navigation or fetcher), so we flatten the navigation/fetcher submission\n * onto the arguments. It shouldn't matter whether it came from a navigation\n * or a fetcher, what really matters is the URLs and the formData since loaders\n * have to re-run based on the data models that were potentially mutated.\n */\nexport interface ShouldRevalidateFunction {\n (args: {\n currentUrl: URL;\n currentParams: AgnosticDataRouteMatch[\"params\"];\n nextUrl: URL;\n nextParams: AgnosticDataRouteMatch[\"params\"];\n formMethod?: Submission[\"formMethod\"];\n formAction?: Submission[\"formAction\"];\n formEncType?: Submission[\"formEncType\"];\n formData?: Submission[\"formData\"];\n actionResult?: DataResult;\n defaultShouldRevalidate: boolean;\n }): boolean;\n}\n\n/**\n * Function provided by the framework-aware layers to set `hasErrorBoundary`\n * from the framework-aware `errorElement` prop\n */\nexport interface DetectErrorBoundaryFunction {\n (route: AgnosticRouteObject): boolean;\n}\n\n/**\n * Keys we cannot change from within a lazy() function. We spread all other keys\n * onto the route. Either they're meaningful to the router, or they'll get\n * ignored.\n */\nexport type ImmutableRouteKey =\n | \"lazy\"\n | \"caseSensitive\"\n | \"path\"\n | \"id\"\n | \"index\"\n | \"children\";\n\nexport const immutableRouteKeys = new Set([\n \"lazy\",\n \"caseSensitive\",\n \"path\",\n \"id\",\n \"index\",\n \"children\",\n]);\n\n/**\n * lazy() function to load a route definition, which can add non-matching\n * related properties to a route\n */\nexport interface LazyRouteFunction {\n (): Promise>;\n}\n\n/**\n * Base RouteObject with common props shared by all types of routes\n */\ntype AgnosticBaseRouteObject = {\n caseSensitive?: boolean;\n path?: string;\n id?: string;\n loader?: LoaderFunction;\n action?: ActionFunction;\n hasErrorBoundary?: boolean;\n shouldRevalidate?: ShouldRevalidateFunction;\n handle?: any;\n lazy?: LazyRouteFunction;\n};\n\n/**\n * Index routes must not have children\n */\nexport type AgnosticIndexRouteObject = AgnosticBaseRouteObject & {\n children?: undefined;\n index: true;\n};\n\n/**\n * Non-index routes may have children, but cannot have index\n */\nexport type AgnosticNonIndexRouteObject = AgnosticBaseRouteObject & {\n children?: AgnosticRouteObject[];\n index?: false;\n};\n\n/**\n * A route object represents a logical route, with (optionally) its child\n * routes organized in a tree-like structure.\n */\nexport type AgnosticRouteObject =\n | AgnosticIndexRouteObject\n | AgnosticNonIndexRouteObject;\n\nexport type AgnosticDataIndexRouteObject = AgnosticIndexRouteObject & {\n id: string;\n};\n\nexport type AgnosticDataNonIndexRouteObject = AgnosticNonIndexRouteObject & {\n children?: AgnosticDataRouteObject[];\n id: string;\n};\n\n/**\n * A data route object, which is just a RouteObject with a required unique ID\n */\nexport type AgnosticDataRouteObject =\n | AgnosticDataIndexRouteObject\n | AgnosticDataNonIndexRouteObject;\n\nexport type RouteManifest = Record;\n\n// Recursive helper for finding path parameters in the absence of wildcards\ntype _PathParam =\n // split path into individual path segments\n Path extends `${infer L}/${infer R}`\n ? _PathParam | _PathParam\n : // find params after `:`\n Path extends `:${infer Param}`\n ? Param extends `${infer Optional}?`\n ? Optional\n : Param\n : // otherwise, there aren't any params present\n never;\n\n/**\n * Examples:\n * \"/a/b/*\" -> \"*\"\n * \":a\" -> \"a\"\n * \"/a/:b\" -> \"b\"\n * \"/a/blahblahblah:b\" -> \"b\"\n * \"/:a/:b\" -> \"a\" | \"b\"\n * \"/:a/b/:c/*\" -> \"a\" | \"c\" | \"*\"\n */\ntype PathParam =\n // check if path is just a wildcard\n Path extends \"*\" | \"/*\"\n ? \"*\"\n : // look for wildcard at the end of the path\n Path extends `${infer Rest}/*`\n ? \"*\" | _PathParam\n : // look for params in the absence of wildcards\n _PathParam;\n\n// Attempt to parse the given string segment. If it fails, then just return the\n// plain string type as a default fallback. Otherwise return the union of the\n// parsed string literals that were referenced as dynamic segments in the route.\nexport type ParamParseKey =\n // if could not find path params, fallback to `string`\n [PathParam] extends [never] ? string : PathParam;\n\n/**\n * The parameters that were parsed from the URL path.\n */\nexport type Params = {\n readonly [key in Key]: string | undefined;\n};\n\n/**\n * A RouteMatch contains info about how a route matched a URL.\n */\nexport interface AgnosticRouteMatch<\n ParamKey extends string = string,\n RouteObjectType extends AgnosticRouteObject = AgnosticRouteObject\n> {\n /**\n * The names and values of dynamic parameters in the URL.\n */\n params: Params;\n /**\n * The portion of the URL pathname that was matched.\n */\n pathname: string;\n /**\n * The portion of the URL pathname that was matched before child routes.\n */\n pathnameBase: string;\n /**\n * The route object that was used to match.\n */\n route: RouteObjectType;\n}\n\nexport interface AgnosticDataRouteMatch\n extends AgnosticRouteMatch {}\n\nfunction isIndexRoute(\n route: AgnosticRouteObject\n): route is AgnosticIndexRouteObject {\n return route.index === true;\n}\n\n// Walk the route tree generating unique IDs where necessary so we are working\n// solely with AgnosticDataRouteObject's within the Router\nexport function convertRoutesToDataRoutes(\n routes: AgnosticRouteObject[],\n detectErrorBoundary: DetectErrorBoundaryFunction,\n parentPath: number[] = [],\n manifest: RouteManifest = {}\n): AgnosticDataRouteObject[] {\n return routes.map((route, index) => {\n let treePath = [...parentPath, index];\n let id = typeof route.id === \"string\" ? route.id : treePath.join(\"-\");\n invariant(\n route.index !== true || !route.children,\n `Cannot specify children on an index route`\n );\n invariant(\n !manifest[id],\n `Found a route id collision on id \"${id}\". Route ` +\n \"id's must be globally unique within Data Router usages\"\n );\n\n if (isIndexRoute(route)) {\n let indexRoute: AgnosticDataIndexRouteObject = {\n ...route,\n hasErrorBoundary: detectErrorBoundary(route),\n id,\n };\n manifest[id] = indexRoute;\n return indexRoute;\n } else {\n let pathOrLayoutRoute: AgnosticDataNonIndexRouteObject = {\n ...route,\n id,\n hasErrorBoundary: detectErrorBoundary(route),\n children: undefined,\n };\n manifest[id] = pathOrLayoutRoute;\n\n if (route.children) {\n pathOrLayoutRoute.children = convertRoutesToDataRoutes(\n route.children,\n detectErrorBoundary,\n treePath,\n manifest\n );\n }\n\n return pathOrLayoutRoute;\n }\n });\n}\n\n/**\n * Matches the given routes to a location and returns the match data.\n *\n * @see https://reactrouter.com/utils/match-routes\n */\nexport function matchRoutes<\n RouteObjectType extends AgnosticRouteObject = AgnosticRouteObject\n>(\n routes: RouteObjectType[],\n locationArg: Partial | string,\n basename = \"/\"\n): AgnosticRouteMatch[] | null {\n let location =\n typeof locationArg === \"string\" ? parsePath(locationArg) : locationArg;\n\n let pathname = stripBasename(location.pathname || \"/\", basename);\n\n if (pathname == null) {\n return null;\n }\n\n let branches = flattenRoutes(routes);\n rankRouteBranches(branches);\n\n let matches = null;\n for (let i = 0; matches == null && i < branches.length; ++i) {\n matches = matchRouteBranch(\n branches[i],\n // Incoming pathnames are generally encoded from either window.location\n // or from router.navigate, but we want to match against the unencoded\n // paths in the route definitions. Memory router locations won't be\n // encoded here but there also shouldn't be anything to decode so this\n // should be a safe operation. This avoids needing matchRoutes to be\n // history-aware.\n safelyDecodeURI(pathname)\n );\n }\n\n return matches;\n}\n\ninterface RouteMeta<\n RouteObjectType extends AgnosticRouteObject = AgnosticRouteObject\n> {\n relativePath: string;\n caseSensitive: boolean;\n childrenIndex: number;\n route: RouteObjectType;\n}\n\ninterface RouteBranch<\n RouteObjectType extends AgnosticRouteObject = AgnosticRouteObject\n> {\n path: string;\n score: number;\n routesMeta: RouteMeta[];\n}\n\nfunction flattenRoutes<\n RouteObjectType extends AgnosticRouteObject = AgnosticRouteObject\n>(\n routes: RouteObjectType[],\n branches: RouteBranch[] = [],\n parentsMeta: RouteMeta[] = [],\n parentPath = \"\"\n): RouteBranch[] {\n let flattenRoute = (\n route: RouteObjectType,\n index: number,\n relativePath?: string\n ) => {\n let meta: RouteMeta = {\n relativePath:\n relativePath === undefined ? route.path || \"\" : relativePath,\n caseSensitive: route.caseSensitive === true,\n childrenIndex: index,\n route,\n };\n\n if (meta.relativePath.startsWith(\"/\")) {\n invariant(\n meta.relativePath.startsWith(parentPath),\n `Absolute route path \"${meta.relativePath}\" nested under path ` +\n `\"${parentPath}\" is not valid. An absolute child route path ` +\n `must start with the combined path of all its parent routes.`\n );\n\n meta.relativePath = meta.relativePath.slice(parentPath.length);\n }\n\n let path = joinPaths([parentPath, meta.relativePath]);\n let routesMeta = parentsMeta.concat(meta);\n\n // Add the children before adding this route to the array so we traverse the\n // route tree depth-first and child routes appear before their parents in\n // the \"flattened\" version.\n if (route.children && route.children.length > 0) {\n invariant(\n // Our types know better, but runtime JS may not!\n // @ts-expect-error\n route.index !== true,\n `Index routes must not have child routes. Please remove ` +\n `all child routes from route path \"${path}\".`\n );\n\n flattenRoutes(route.children, branches, routesMeta, path);\n }\n\n // Routes without a path shouldn't ever match by themselves unless they are\n // index routes, so don't add them to the list of possible branches.\n if (route.path == null && !route.index) {\n return;\n }\n\n branches.push({\n path,\n score: computeScore(path, route.index),\n routesMeta,\n });\n };\n routes.forEach((route, index) => {\n // coarse-grain check for optional params\n if (route.path === \"\" || !route.path?.includes(\"?\")) {\n flattenRoute(route, index);\n } else {\n for (let exploded of explodeOptionalSegments(route.path)) {\n flattenRoute(route, index, exploded);\n }\n }\n });\n\n return branches;\n}\n\n/**\n * Computes all combinations of optional path segments for a given path,\n * excluding combinations that are ambiguous and of lower priority.\n *\n * For example, `/one/:two?/three/:four?/:five?` explodes to:\n * - `/one/three`\n * - `/one/:two/three`\n * - `/one/three/:four`\n * - `/one/three/:five`\n * - `/one/:two/three/:four`\n * - `/one/:two/three/:five`\n * - `/one/three/:four/:five`\n * - `/one/:two/three/:four/:five`\n */\nfunction explodeOptionalSegments(path: string): string[] {\n let segments = path.split(\"/\");\n if (segments.length === 0) return [];\n\n let [first, ...rest] = segments;\n\n // Optional path segments are denoted by a trailing `?`\n let isOptional = first.endsWith(\"?\");\n // Compute the corresponding required segment: `foo?` -> `foo`\n let required = first.replace(/\\?$/, \"\");\n\n if (rest.length === 0) {\n // Intepret empty string as omitting an optional segment\n // `[\"one\", \"\", \"three\"]` corresponds to omitting `:two` from `/one/:two?/three` -> `/one/three`\n return isOptional ? [required, \"\"] : [required];\n }\n\n let restExploded = explodeOptionalSegments(rest.join(\"/\"));\n\n let result: string[] = [];\n\n // All child paths with the prefix. Do this for all children before the\n // optional version for all children so we get consistent ordering where the\n // parent optional aspect is preferred as required. Otherwise, we can get\n // child sections interspersed where deeper optional segments are higher than\n // parent optional segments, where for example, /:two would explodes _earlier_\n // then /:one. By always including the parent as required _for all children_\n // first, we avoid this issue\n result.push(\n ...restExploded.map((subpath) =>\n subpath === \"\" ? required : [required, subpath].join(\"/\")\n )\n );\n\n // Then if this is an optional value, add all child versions without\n if (isOptional) {\n result.push(...restExploded);\n }\n\n // for absolute paths, ensure `/` instead of empty segment\n return result.map((exploded) =>\n path.startsWith(\"/\") && exploded === \"\" ? \"/\" : exploded\n );\n}\n\nfunction rankRouteBranches(branches: RouteBranch[]): void {\n branches.sort((a, b) =>\n a.score !== b.score\n ? b.score - a.score // Higher score first\n : compareIndexes(\n a.routesMeta.map((meta) => meta.childrenIndex),\n b.routesMeta.map((meta) => meta.childrenIndex)\n )\n );\n}\n\nconst paramRe = /^:\\w+$/;\nconst dynamicSegmentValue = 3;\nconst indexRouteValue = 2;\nconst emptySegmentValue = 1;\nconst staticSegmentValue = 10;\nconst splatPenalty = -2;\nconst isSplat = (s: string) => s === \"*\";\n\nfunction computeScore(path: string, index: boolean | undefined): number {\n let segments = path.split(\"/\");\n let initialScore = segments.length;\n if (segments.some(isSplat)) {\n initialScore += splatPenalty;\n }\n\n if (index) {\n initialScore += indexRouteValue;\n }\n\n return segments\n .filter((s) => !isSplat(s))\n .reduce(\n (score, segment) =>\n score +\n (paramRe.test(segment)\n ? dynamicSegmentValue\n : segment === \"\"\n ? emptySegmentValue\n : staticSegmentValue),\n initialScore\n );\n}\n\nfunction compareIndexes(a: number[], b: number[]): number {\n let siblings =\n a.length === b.length && a.slice(0, -1).every((n, i) => n === b[i]);\n\n return siblings\n ? // If two routes are siblings, we should try to match the earlier sibling\n // first. This allows people to have fine-grained control over the matching\n // behavior by simply putting routes with identical paths in the order they\n // want them tried.\n a[a.length - 1] - b[b.length - 1]\n : // Otherwise, it doesn't really make sense to rank non-siblings by index,\n // so they sort equally.\n 0;\n}\n\nfunction matchRouteBranch<\n ParamKey extends string = string,\n RouteObjectType extends AgnosticRouteObject = AgnosticRouteObject\n>(\n branch: RouteBranch,\n pathname: string\n): AgnosticRouteMatch[] | null {\n let { routesMeta } = branch;\n\n let matchedParams = {};\n let matchedPathname = \"/\";\n let matches: AgnosticRouteMatch[] = [];\n for (let i = 0; i < routesMeta.length; ++i) {\n let meta = routesMeta[i];\n let end = i === routesMeta.length - 1;\n let remainingPathname =\n matchedPathname === \"/\"\n ? pathname\n : pathname.slice(matchedPathname.length) || \"/\";\n let match = matchPath(\n { path: meta.relativePath, caseSensitive: meta.caseSensitive, end },\n remainingPathname\n );\n\n if (!match) return null;\n\n Object.assign(matchedParams, match.params);\n\n let route = meta.route;\n\n matches.push({\n // TODO: Can this as be avoided?\n params: matchedParams as Params,\n pathname: joinPaths([matchedPathname, match.pathname]),\n pathnameBase: normalizePathname(\n joinPaths([matchedPathname, match.pathnameBase])\n ),\n route,\n });\n\n if (match.pathnameBase !== \"/\") {\n matchedPathname = joinPaths([matchedPathname, match.pathnameBase]);\n }\n }\n\n return matches;\n}\n\n/**\n * Returns a path with params interpolated.\n *\n * @see https://reactrouter.com/utils/generate-path\n */\nexport function generatePath(\n originalPath: Path,\n params: {\n [key in PathParam]: string | null;\n } = {} as any\n): string {\n let path: string = originalPath;\n if (path.endsWith(\"*\") && path !== \"*\" && !path.endsWith(\"/*\")) {\n warning(\n false,\n `Route path \"${path}\" will be treated as if it were ` +\n `\"${path.replace(/\\*$/, \"/*\")}\" because the \\`*\\` character must ` +\n `always follow a \\`/\\` in the pattern. To get rid of this warning, ` +\n `please change the route path to \"${path.replace(/\\*$/, \"/*\")}\".`\n );\n path = path.replace(/\\*$/, \"/*\") as Path;\n }\n\n // ensure `/` is added at the beginning if the path is absolute\n const prefix = path.startsWith(\"/\") ? \"/\" : \"\";\n\n const segments = path\n .split(/\\/+/)\n .map((segment, index, array) => {\n const isLastSegment = index === array.length - 1;\n\n // only apply the splat if it's the last segment\n if (isLastSegment && segment === \"*\") {\n const star = \"*\" as PathParam;\n const starParam = params[star];\n\n // Apply the splat\n return starParam;\n }\n\n const keyMatch = segment.match(/^:(\\w+)(\\??)$/);\n if (keyMatch) {\n const [, key, optional] = keyMatch;\n let param = params[key as PathParam];\n\n if (optional === \"?\") {\n return param == null ? \"\" : param;\n }\n\n if (param == null) {\n invariant(false, `Missing \":${key}\" param`);\n }\n\n return param;\n }\n\n // Remove any optional markers from optional static segments\n return segment.replace(/\\?$/g, \"\");\n })\n // Remove empty segments\n .filter((segment) => !!segment);\n\n return prefix + segments.join(\"/\");\n}\n\n/**\n * A PathPattern is used to match on some portion of a URL pathname.\n */\nexport interface PathPattern {\n /**\n * A string to match against a URL pathname. May contain `:id`-style segments\n * to indicate placeholders for dynamic parameters. May also end with `/*` to\n * indicate matching the rest of the URL pathname.\n */\n path: Path;\n /**\n * Should be `true` if the static portions of the `path` should be matched in\n * the same case.\n */\n caseSensitive?: boolean;\n /**\n * Should be `true` if this pattern should match the entire URL pathname.\n */\n end?: boolean;\n}\n\n/**\n * A PathMatch contains info about how a PathPattern matched on a URL pathname.\n */\nexport interface PathMatch {\n /**\n * The names and values of dynamic parameters in the URL.\n */\n params: Params;\n /**\n * The portion of the URL pathname that was matched.\n */\n pathname: string;\n /**\n * The portion of the URL pathname that was matched before child routes.\n */\n pathnameBase: string;\n /**\n * The pattern that was used to match.\n */\n pattern: PathPattern;\n}\n\ntype Mutable = {\n -readonly [P in keyof T]: T[P];\n};\n\n/**\n * Performs pattern matching on a URL pathname and returns information about\n * the match.\n *\n * @see https://reactrouter.com/utils/match-path\n */\nexport function matchPath<\n ParamKey extends ParamParseKey,\n Path extends string\n>(\n pattern: PathPattern | Path,\n pathname: string\n): PathMatch | null {\n if (typeof pattern === \"string\") {\n pattern = { path: pattern, caseSensitive: false, end: true };\n }\n\n let [matcher, paramNames] = compilePath(\n pattern.path,\n pattern.caseSensitive,\n pattern.end\n );\n\n let match = pathname.match(matcher);\n if (!match) return null;\n\n let matchedPathname = match[0];\n let pathnameBase = matchedPathname.replace(/(.)\\/+$/, \"$1\");\n let captureGroups = match.slice(1);\n let params: Params = paramNames.reduce>(\n (memo, paramName, index) => {\n // We need to compute the pathnameBase here using the raw splat value\n // instead of using params[\"*\"] later because it will be decoded then\n if (paramName === \"*\") {\n let splatValue = captureGroups[index] || \"\";\n pathnameBase = matchedPathname\n .slice(0, matchedPathname.length - splatValue.length)\n .replace(/(.)\\/+$/, \"$1\");\n }\n\n memo[paramName] = safelyDecodeURIComponent(\n captureGroups[index] || \"\",\n paramName\n );\n return memo;\n },\n {}\n );\n\n return {\n params,\n pathname: matchedPathname,\n pathnameBase,\n pattern,\n };\n}\n\nfunction compilePath(\n path: string,\n caseSensitive = false,\n end = true\n): [RegExp, string[]] {\n warning(\n path === \"*\" || !path.endsWith(\"*\") || path.endsWith(\"/*\"),\n `Route path \"${path}\" will be treated as if it were ` +\n `\"${path.replace(/\\*$/, \"/*\")}\" because the \\`*\\` character must ` +\n `always follow a \\`/\\` in the pattern. To get rid of this warning, ` +\n `please change the route path to \"${path.replace(/\\*$/, \"/*\")}\".`\n );\n\n let paramNames: string[] = [];\n let regexpSource =\n \"^\" +\n path\n .replace(/\\/*\\*?$/, \"\") // Ignore trailing / and /*, we'll handle it below\n .replace(/^\\/*/, \"/\") // Make sure it has a leading /\n .replace(/[\\\\.*+^$?{}|()[\\]]/g, \"\\\\$&\") // Escape special regex chars\n .replace(/\\/:(\\w+)/g, (_: string, paramName: string) => {\n paramNames.push(paramName);\n return \"/([^\\\\/]+)\";\n });\n\n if (path.endsWith(\"*\")) {\n paramNames.push(\"*\");\n regexpSource +=\n path === \"*\" || path === \"/*\"\n ? \"(.*)$\" // Already matched the initial /, just match the rest\n : \"(?:\\\\/(.+)|\\\\/*)$\"; // Don't include the / in params[\"*\"]\n } else if (end) {\n // When matching to the end, ignore trailing slashes\n regexpSource += \"\\\\/*$\";\n } else if (path !== \"\" && path !== \"/\") {\n // If our path is non-empty and contains anything beyond an initial slash,\n // then we have _some_ form of path in our regex so we should expect to\n // match only if we find the end of this path segment. Look for an optional\n // non-captured trailing slash (to match a portion of the URL) or the end\n // of the path (if we've matched to the end). We used to do this with a\n // word boundary but that gives false positives on routes like\n // /user-preferences since `-` counts as a word boundary.\n regexpSource += \"(?:(?=\\\\/|$))\";\n } else {\n // Nothing to match for \"\" or \"/\"\n }\n\n let matcher = new RegExp(regexpSource, caseSensitive ? undefined : \"i\");\n\n return [matcher, paramNames];\n}\n\nfunction safelyDecodeURI(value: string) {\n try {\n return decodeURI(value);\n } catch (error) {\n warning(\n false,\n `The URL path \"${value}\" could not be decoded because it is is a ` +\n `malformed URL segment. This is probably due to a bad percent ` +\n `encoding (${error}).`\n );\n\n return value;\n }\n}\n\nfunction safelyDecodeURIComponent(value: string, paramName: string) {\n try {\n return decodeURIComponent(value);\n } catch (error) {\n warning(\n false,\n `The value for the URL param \"${paramName}\" will not be decoded because` +\n ` the string \"${value}\" is a malformed URL segment. This is probably` +\n ` due to a bad percent encoding (${error}).`\n );\n\n return value;\n }\n}\n\n/**\n * @private\n */\nexport function stripBasename(\n pathname: string,\n basename: string\n): string | null {\n if (basename === \"/\") return pathname;\n\n if (!pathname.toLowerCase().startsWith(basename.toLowerCase())) {\n return null;\n }\n\n // We want to leave trailing slash behavior in the user's control, so if they\n // specify a basename with a trailing slash, we should support it\n let startIndex = basename.endsWith(\"/\")\n ? basename.length - 1\n : basename.length;\n let nextChar = pathname.charAt(startIndex);\n if (nextChar && nextChar !== \"/\") {\n // pathname does not start with basename/\n return null;\n }\n\n return pathname.slice(startIndex) || \"/\";\n}\n\n/**\n * Returns a resolved path object relative to the given pathname.\n *\n * @see https://reactrouter.com/utils/resolve-path\n */\nexport function resolvePath(to: To, fromPathname = \"/\"): Path {\n let {\n pathname: toPathname,\n search = \"\",\n hash = \"\",\n } = typeof to === \"string\" ? parsePath(to) : to;\n\n let pathname = toPathname\n ? toPathname.startsWith(\"/\")\n ? toPathname\n : resolvePathname(toPathname, fromPathname)\n : fromPathname;\n\n return {\n pathname,\n search: normalizeSearch(search),\n hash: normalizeHash(hash),\n };\n}\n\nfunction resolvePathname(relativePath: string, fromPathname: string): string {\n let segments = fromPathname.replace(/\\/+$/, \"\").split(\"/\");\n let relativeSegments = relativePath.split(\"/\");\n\n relativeSegments.forEach((segment) => {\n if (segment === \"..\") {\n // Keep the root \"\" segment so the pathname starts at /\n if (segments.length > 1) segments.pop();\n } else if (segment !== \".\") {\n segments.push(segment);\n }\n });\n\n return segments.length > 1 ? segments.join(\"/\") : \"/\";\n}\n\nfunction getInvalidPathError(\n char: string,\n field: string,\n dest: string,\n path: Partial\n) {\n return (\n `Cannot include a '${char}' character in a manually specified ` +\n `\\`to.${field}\\` field [${JSON.stringify(\n path\n )}]. Please separate it out to the ` +\n `\\`to.${dest}\\` field. Alternatively you may provide the full path as ` +\n `a string in \n * \n * \n *\n * \n * \n * \n */\nexport function getPathContributingMatches<\n T extends AgnosticRouteMatch = AgnosticRouteMatch\n>(matches: T[]) {\n return matches.filter(\n (match, index) =>\n index === 0 || (match.route.path && match.route.path.length > 0)\n );\n}\n\n/**\n * @private\n */\nexport function resolveTo(\n toArg: To,\n routePathnames: string[],\n locationPathname: string,\n isPathRelative = false\n): Path {\n let to: Partial;\n if (typeof toArg === \"string\") {\n to = parsePath(toArg);\n } else {\n to = { ...toArg };\n\n invariant(\n !to.pathname || !to.pathname.includes(\"?\"),\n getInvalidPathError(\"?\", \"pathname\", \"search\", to)\n );\n invariant(\n !to.pathname || !to.pathname.includes(\"#\"),\n getInvalidPathError(\"#\", \"pathname\", \"hash\", to)\n );\n invariant(\n !to.search || !to.search.includes(\"#\"),\n getInvalidPathError(\"#\", \"search\", \"hash\", to)\n );\n }\n\n let isEmptyPath = toArg === \"\" || to.pathname === \"\";\n let toPathname = isEmptyPath ? \"/\" : to.pathname;\n\n let from: string;\n\n // Routing is relative to the current pathname if explicitly requested.\n //\n // If a pathname is explicitly provided in `to`, it should be relative to the\n // route context. This is explained in `Note on ` works and a\n // major reason we call this a \"to\" value instead of a \"href\".\n while (toSegments[0] === \"..\") {\n toSegments.shift();\n routePathnameIndex -= 1;\n }\n\n to.pathname = toSegments.join(\"/\");\n }\n\n // If there are more \"..\" segments than parent routes, resolve relative to\n // the root / URL.\n from = routePathnameIndex >= 0 ? routePathnames[routePathnameIndex] : \"/\";\n }\n\n let path = resolvePath(to, from);\n\n // Ensure the pathname has a trailing slash if the original \"to\" had one\n let hasExplicitTrailingSlash =\n toPathname && toPathname !== \"/\" && toPathname.endsWith(\"/\");\n // Or if this was a link to the current path which has a trailing slash\n let hasCurrentTrailingSlash =\n (isEmptyPath || toPathname === \".\") && locationPathname.endsWith(\"/\");\n if (\n !path.pathname.endsWith(\"/\") &&\n (hasExplicitTrailingSlash || hasCurrentTrailingSlash)\n ) {\n path.pathname += \"/\";\n }\n\n return path;\n}\n\n/**\n * @private\n */\nexport function getToPathname(to: To): string | undefined {\n // Empty strings should be treated the same as / paths\n return to === \"\" || (to as Path).pathname === \"\"\n ? \"/\"\n : typeof to === \"string\"\n ? parsePath(to).pathname\n : to.pathname;\n}\n\n/**\n * @private\n */\nexport const joinPaths = (paths: string[]): string =>\n paths.join(\"/\").replace(/\\/\\/+/g, \"/\");\n\n/**\n * @private\n */\nexport const normalizePathname = (pathname: string): string =>\n pathname.replace(/\\/+$/, \"\").replace(/^\\/*/, \"/\");\n\n/**\n * @private\n */\nexport const normalizeSearch = (search: string): string =>\n !search || search === \"?\"\n ? \"\"\n : search.startsWith(\"?\")\n ? search\n : \"?\" + search;\n\n/**\n * @private\n */\nexport const normalizeHash = (hash: string): string =>\n !hash || hash === \"#\" ? \"\" : hash.startsWith(\"#\") ? hash : \"#\" + hash;\n\nexport type JsonFunction = (\n data: Data,\n init?: number | ResponseInit\n) => Response;\n\n/**\n * This is a shortcut for creating `application/json` responses. Converts `data`\n * to JSON and sets the `Content-Type` header.\n */\nexport const json: JsonFunction = (data, init = {}) => {\n let responseInit = typeof init === \"number\" ? { status: init } : init;\n\n let headers = new Headers(responseInit.headers);\n if (!headers.has(\"Content-Type\")) {\n headers.set(\"Content-Type\", \"application/json; charset=utf-8\");\n }\n\n return new Response(JSON.stringify(data), {\n ...responseInit,\n headers,\n });\n};\n\nexport interface TrackedPromise extends Promise {\n _tracked?: boolean;\n _data?: any;\n _error?: any;\n}\n\nexport class AbortedDeferredError extends Error {}\n\nexport class DeferredData {\n private pendingKeysSet: Set = new Set();\n private controller: AbortController;\n private abortPromise: Promise;\n private unlistenAbortSignal: () => void;\n private subscribers: Set<(aborted: boolean, settledKey?: string) => void> =\n new Set();\n data: Record;\n init?: ResponseInit;\n deferredKeys: string[] = [];\n\n constructor(data: Record, responseInit?: ResponseInit) {\n invariant(\n data && typeof data === \"object\" && !Array.isArray(data),\n \"defer() only accepts plain objects\"\n );\n\n // Set up an AbortController + Promise we can race against to exit early\n // cancellation\n let reject: (e: AbortedDeferredError) => void;\n this.abortPromise = new Promise((_, r) => (reject = r));\n this.controller = new AbortController();\n let onAbort = () =>\n reject(new AbortedDeferredError(\"Deferred data aborted\"));\n this.unlistenAbortSignal = () =>\n this.controller.signal.removeEventListener(\"abort\", onAbort);\n this.controller.signal.addEventListener(\"abort\", onAbort);\n\n this.data = Object.entries(data).reduce(\n (acc, [key, value]) =>\n Object.assign(acc, {\n [key]: this.trackPromise(key, value),\n }),\n {}\n );\n\n if (this.done) {\n // All incoming values were resolved\n this.unlistenAbortSignal();\n }\n\n this.init = responseInit;\n }\n\n private trackPromise(\n key: string,\n value: Promise | unknown\n ): TrackedPromise | unknown {\n if (!(value instanceof Promise)) {\n return value;\n }\n\n this.deferredKeys.push(key);\n this.pendingKeysSet.add(key);\n\n // We store a little wrapper promise that will be extended with\n // _data/_error props upon resolve/reject\n let promise: TrackedPromise = Promise.race([value, this.abortPromise]).then(\n (data) => this.onSettle(promise, key, null, data as unknown),\n (error) => this.onSettle(promise, key, error as unknown)\n );\n\n // Register rejection listeners to avoid uncaught promise rejections on\n // errors or aborted deferred values\n promise.catch(() => {});\n\n Object.defineProperty(promise, \"_tracked\", { get: () => true });\n return promise;\n }\n\n private onSettle(\n promise: TrackedPromise,\n key: string,\n error: unknown,\n data?: unknown\n ): unknown {\n if (\n this.controller.signal.aborted &&\n error instanceof AbortedDeferredError\n ) {\n this.unlistenAbortSignal();\n Object.defineProperty(promise, \"_error\", { get: () => error });\n return Promise.reject(error);\n }\n\n this.pendingKeysSet.delete(key);\n\n if (this.done) {\n // Nothing left to abort!\n this.unlistenAbortSignal();\n }\n\n if (error) {\n Object.defineProperty(promise, \"_error\", { get: () => error });\n this.emit(false, key);\n return Promise.reject(error);\n }\n\n Object.defineProperty(promise, \"_data\", { get: () => data });\n this.emit(false, key);\n return data;\n }\n\n private emit(aborted: boolean, settledKey?: string) {\n this.subscribers.forEach((subscriber) => subscriber(aborted, settledKey));\n }\n\n subscribe(fn: (aborted: boolean, settledKey?: string) => void) {\n this.subscribers.add(fn);\n return () => this.subscribers.delete(fn);\n }\n\n cancel() {\n this.controller.abort();\n this.pendingKeysSet.forEach((v, k) => this.pendingKeysSet.delete(k));\n this.emit(true);\n }\n\n async resolveData(signal: AbortSignal) {\n let aborted = false;\n if (!this.done) {\n let onAbort = () => this.cancel();\n signal.addEventListener(\"abort\", onAbort);\n aborted = await new Promise((resolve) => {\n this.subscribe((aborted) => {\n signal.removeEventListener(\"abort\", onAbort);\n if (aborted || this.done) {\n resolve(aborted);\n }\n });\n });\n }\n return aborted;\n }\n\n get done() {\n return this.pendingKeysSet.size === 0;\n }\n\n get unwrappedData() {\n invariant(\n this.data !== null && this.done,\n \"Can only unwrap data on initialized and settled deferreds\"\n );\n\n return Object.entries(this.data).reduce(\n (acc, [key, value]) =>\n Object.assign(acc, {\n [key]: unwrapTrackedPromise(value),\n }),\n {}\n );\n }\n\n get pendingKeys() {\n return Array.from(this.pendingKeysSet);\n }\n}\n\nfunction isTrackedPromise(value: any): value is TrackedPromise {\n return (\n value instanceof Promise && (value as TrackedPromise)._tracked === true\n );\n}\n\nfunction unwrapTrackedPromise(value: any) {\n if (!isTrackedPromise(value)) {\n return value;\n }\n\n if (value._error) {\n throw value._error;\n }\n return value._data;\n}\n\nexport type DeferFunction = (\n data: Record,\n init?: number | ResponseInit\n) => DeferredData;\n\nexport const defer: DeferFunction = (data, init = {}) => {\n let responseInit = typeof init === \"number\" ? { status: init } : init;\n\n return new DeferredData(data, responseInit);\n};\n\nexport type RedirectFunction = (\n url: string,\n init?: number | ResponseInit\n) => Response;\n\n/**\n * A redirect response. Sets the status code and the `Location` header.\n * Defaults to \"302 Found\".\n */\nexport const redirect: RedirectFunction = (url, init = 302) => {\n let responseInit = init;\n if (typeof responseInit === \"number\") {\n responseInit = { status: responseInit };\n } else if (typeof responseInit.status === \"undefined\") {\n responseInit.status = 302;\n }\n\n let headers = new Headers(responseInit.headers);\n headers.set(\"Location\", url);\n\n return new Response(null, {\n ...responseInit,\n headers,\n });\n};\n\n/**\n * @private\n * Utility class we use to hold auto-unwrapped 4xx/5xx Response bodies\n */\nexport class ErrorResponse {\n status: number;\n statusText: string;\n data: any;\n error?: Error;\n internal: boolean;\n\n constructor(\n status: number,\n statusText: string | undefined,\n data: any,\n internal = false\n ) {\n this.status = status;\n this.statusText = statusText || \"\";\n this.internal = internal;\n if (data instanceof Error) {\n this.data = data.toString();\n this.error = data;\n } else {\n this.data = data;\n }\n }\n}\n\n/**\n * Check if the given error is an ErrorResponse generated from a 4xx/5xx\n * Response thrown from an action/loader\n */\nexport function isRouteErrorResponse(error: any): error is ErrorResponse {\n return (\n error != null &&\n typeof error.status === \"number\" &&\n typeof error.statusText === \"string\" &&\n typeof error.internal === \"boolean\" &&\n \"data\" in error\n );\n}\n","import type { History, Location, Path, To } from \"./history\";\nimport {\n Action as HistoryAction,\n createLocation,\n createPath,\n invariant,\n parsePath,\n warning,\n} from \"./history\";\nimport type {\n DataResult,\n AgnosticDataRouteMatch,\n AgnosticDataRouteObject,\n DeferredResult,\n ErrorResult,\n FormEncType,\n FormMethod,\n DetectErrorBoundaryFunction,\n RedirectResult,\n RouteData,\n AgnosticRouteObject,\n Submission,\n SuccessResult,\n AgnosticRouteMatch,\n MutationFormMethod,\n ShouldRevalidateFunction,\n RouteManifest,\n ImmutableRouteKey,\n ActionFunction,\n LoaderFunction,\n} from \"./utils\";\nimport {\n DeferredData,\n ErrorResponse,\n ResultType,\n convertRoutesToDataRoutes,\n getPathContributingMatches,\n immutableRouteKeys,\n isRouteErrorResponse,\n joinPaths,\n matchRoutes,\n resolveTo,\n stripBasename,\n} from \"./utils\";\n\n////////////////////////////////////////////////////////////////////////////////\n//#region Types and Constants\n////////////////////////////////////////////////////////////////////////////////\n\n/**\n * A Router instance manages all navigation and data loading/mutations\n */\nexport interface Router {\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Return the basename for the router\n */\n get basename(): RouterInit[\"basename\"];\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Return the current state of the router\n */\n get state(): RouterState;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Return the routes for this router instance\n */\n get routes(): AgnosticDataRouteObject[];\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Initialize the router, including adding history listeners and kicking off\n * initial data fetches. Returns a function to cleanup listeners and abort\n * any in-progress loads\n */\n initialize(): Router;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Subscribe to router.state updates\n *\n * @param fn function to call with the new state\n */\n subscribe(fn: RouterSubscriber): () => void;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Enable scroll restoration behavior in the router\n *\n * @param savedScrollPositions Object that will manage positions, in case\n * it's being restored from sessionStorage\n * @param getScrollPosition Function to get the active Y scroll position\n * @param getKey Function to get the key to use for restoration\n */\n enableScrollRestoration(\n savedScrollPositions: Record,\n getScrollPosition: GetScrollPositionFunction,\n getKey?: GetScrollRestorationKeyFunction\n ): () => void;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Navigate forward/backward in the history stack\n * @param to Delta to move in the history stack\n */\n navigate(to: number): Promise;\n\n /**\n * Navigate to the given path\n * @param to Path to navigate to\n * @param opts Navigation options (method, submission, etc.)\n */\n navigate(to: To, opts?: RouterNavigateOptions): Promise;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Trigger a fetcher load/submission\n *\n * @param key Fetcher key\n * @param routeId Route that owns the fetcher\n * @param href href to fetch\n * @param opts Fetcher options, (method, submission, etc.)\n */\n fetch(\n key: string,\n routeId: string,\n href: string,\n opts?: RouterNavigateOptions\n ): void;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Trigger a revalidation of all current route loaders and fetcher loads\n */\n revalidate(): void;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Utility function to create an href for the given location\n * @param location\n */\n createHref(location: Location | URL): string;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Utility function to URL encode a destination path according to the internal\n * history implementation\n * @param to\n */\n encodeLocation(to: To): Path;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Get/create a fetcher for the given key\n * @param key\n */\n getFetcher(key?: string): Fetcher;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Delete the fetcher for a given key\n * @param key\n */\n deleteFetcher(key?: string): void;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Cleanup listeners and abort any in-progress loads\n */\n dispose(): void;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Get a navigation blocker\n * @param key The identifier for the blocker\n * @param fn The blocker function implementation\n */\n getBlocker(key: string, fn: BlockerFunction): Blocker;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Delete a navigation blocker\n * @param key The identifier for the blocker\n */\n deleteBlocker(key: string): void;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * HMR needs to pass in-flight route updates to React Router\n * TODO: Replace this with granular route update APIs (addRoute, updateRoute, deleteRoute)\n */\n _internalSetRoutes(routes: AgnosticRouteObject[]): void;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Internal fetch AbortControllers accessed by unit tests\n */\n _internalFetchControllers: Map;\n\n /**\n * @internal\n * PRIVATE - DO NOT USE\n *\n * Internal pending DeferredData instances accessed by unit tests\n */\n _internalActiveDeferreds: Map;\n}\n\n/**\n * State maintained internally by the router. During a navigation, all states\n * reflect the the \"old\" location unless otherwise noted.\n */\nexport interface RouterState {\n /**\n * The action of the most recent navigation\n */\n historyAction: HistoryAction;\n\n /**\n * The current location reflected by the router\n */\n location: Location;\n\n /**\n * The current set of route matches\n */\n matches: AgnosticDataRouteMatch[];\n\n /**\n * Tracks whether we've completed our initial data load\n */\n initialized: boolean;\n\n /**\n * Current scroll position we should start at for a new view\n * - number -> scroll position to restore to\n * - false -> do not restore scroll at all (used during submissions)\n * - null -> don't have a saved position, scroll to hash or top of page\n */\n restoreScrollPosition: number | false | null;\n\n /**\n * Indicate whether this navigation should skip resetting the scroll position\n * if we are unable to restore the scroll position\n */\n preventScrollReset: boolean;\n\n /**\n * Tracks the state of the current navigation\n */\n navigation: Navigation;\n\n /**\n * Tracks any in-progress revalidations\n */\n revalidation: RevalidationState;\n\n /**\n * Data from the loaders for the current matches\n */\n loaderData: RouteData;\n\n /**\n * Data from the action for the current matches\n */\n actionData: RouteData | null;\n\n /**\n * Errors caught from loaders for the current matches\n */\n errors: RouteData | null;\n\n /**\n * Map of current fetchers\n */\n fetchers: Map;\n\n /**\n * Map of current blockers\n */\n blockers: Map;\n}\n\n/**\n * Data that can be passed into hydrate a Router from SSR\n */\nexport type HydrationState = Partial<\n Pick\n>;\n\n/**\n * Initialization options for createRouter\n */\nexport interface RouterInit {\n basename?: string;\n routes: AgnosticRouteObject[];\n history: History;\n hydrationData?: HydrationState;\n detectErrorBoundary?: DetectErrorBoundaryFunction;\n}\n\n/**\n * State returned from a server-side query() call\n */\nexport interface StaticHandlerContext {\n basename: Router[\"basename\"];\n location: RouterState[\"location\"];\n matches: RouterState[\"matches\"];\n loaderData: RouterState[\"loaderData\"];\n actionData: RouterState[\"actionData\"];\n errors: RouterState[\"errors\"];\n statusCode: number;\n loaderHeaders: Record;\n actionHeaders: Record;\n activeDeferreds: Record | null;\n _deepestRenderedBoundaryId?: string | null;\n}\n\n/**\n * A StaticHandler instance manages a singular SSR navigation/fetch event\n */\nexport interface StaticHandler {\n dataRoutes: AgnosticDataRouteObject[];\n query(\n request: Request,\n opts?: { requestContext?: unknown }\n ): Promise;\n queryRoute(\n request: Request,\n opts?: { routeId?: string; requestContext?: unknown }\n ): Promise;\n}\n\n/**\n * Subscriber function signature for changes to router state\n */\nexport interface RouterSubscriber {\n (state: RouterState): void;\n}\n\ninterface UseMatchesMatch {\n id: string;\n pathname: string;\n params: AgnosticRouteMatch[\"params\"];\n data: unknown;\n handle: unknown;\n}\n\n/**\n * Function signature for determining the key to be used in scroll restoration\n * for a given location\n */\nexport interface GetScrollRestorationKeyFunction {\n (location: Location, matches: UseMatchesMatch[]): string | null;\n}\n\n/**\n * Function signature for determining the current scroll position\n */\nexport interface GetScrollPositionFunction {\n (): number;\n}\n\n/**\n * Options for a navigate() call for a Link navigation\n */\ntype LinkNavigateOptions = {\n replace?: boolean;\n state?: any;\n preventScrollReset?: boolean;\n};\n\n/**\n * Options for a navigate() call for a Form navigation\n */\ntype SubmissionNavigateOptions = {\n replace?: boolean;\n state?: any;\n preventScrollReset?: boolean;\n formMethod?: FormMethod;\n formEncType?: FormEncType;\n formData: FormData;\n};\n\n/**\n * Options to pass to navigate() for either a Link or Form navigation\n */\nexport type RouterNavigateOptions =\n | LinkNavigateOptions\n | SubmissionNavigateOptions;\n\n/**\n * Options to pass to fetch()\n */\nexport type RouterFetchOptions =\n | Omit\n | Omit;\n\n/**\n * Potential states for state.navigation\n */\nexport type NavigationStates = {\n Idle: {\n state: \"idle\";\n location: undefined;\n formMethod: undefined;\n formAction: undefined;\n formEncType: undefined;\n formData: undefined;\n };\n Loading: {\n state: \"loading\";\n location: Location;\n formMethod: FormMethod | undefined;\n formAction: string | undefined;\n formEncType: FormEncType | undefined;\n formData: FormData | undefined;\n };\n Submitting: {\n state: \"submitting\";\n location: Location;\n formMethod: FormMethod;\n formAction: string;\n formEncType: FormEncType;\n formData: FormData;\n };\n};\n\nexport type Navigation = NavigationStates[keyof NavigationStates];\n\nexport type RevalidationState = \"idle\" | \"loading\";\n\n/**\n * Potential states for fetchers\n */\ntype FetcherStates = {\n Idle: {\n state: \"idle\";\n formMethod: undefined;\n formAction: undefined;\n formEncType: undefined;\n formData: undefined;\n data: TData | undefined;\n \" _hasFetcherDoneAnything \"?: boolean;\n };\n Loading: {\n state: \"loading\";\n formMethod: FormMethod | undefined;\n formAction: string | undefined;\n formEncType: FormEncType | undefined;\n formData: FormData | undefined;\n data: TData | undefined;\n \" _hasFetcherDoneAnything \"?: boolean;\n };\n Submitting: {\n state: \"submitting\";\n formMethod: FormMethod;\n formAction: string;\n formEncType: FormEncType;\n formData: FormData;\n data: TData | undefined;\n \" _hasFetcherDoneAnything \"?: boolean;\n };\n};\n\nexport type Fetcher =\n FetcherStates[keyof FetcherStates];\n\ninterface BlockerBlocked {\n state: \"blocked\";\n reset(): void;\n proceed(): void;\n location: Location;\n}\n\ninterface BlockerUnblocked {\n state: \"unblocked\";\n reset: undefined;\n proceed: undefined;\n location: undefined;\n}\n\ninterface BlockerProceeding {\n state: \"proceeding\";\n reset: undefined;\n proceed: undefined;\n location: Location;\n}\n\nexport type Blocker = BlockerUnblocked | BlockerBlocked | BlockerProceeding;\n\nexport type BlockerFunction = (args: {\n currentLocation: Location;\n nextLocation: Location;\n historyAction: HistoryAction;\n}) => boolean;\n\ninterface ShortCircuitable {\n /**\n * startNavigation does not need to complete the navigation because we\n * redirected or got interrupted\n */\n shortCircuited?: boolean;\n}\n\ninterface HandleActionResult extends ShortCircuitable {\n /**\n * Error thrown from the current action, keyed by the route containing the\n * error boundary to render the error. To be committed to the state after\n * loaders have completed\n */\n pendingActionError?: RouteData;\n /**\n * Data returned from the current action, keyed by the route owning the action.\n * To be committed to the state after loaders have completed\n */\n pendingActionData?: RouteData;\n}\n\ninterface HandleLoadersResult extends ShortCircuitable {\n /**\n * loaderData returned from the current set of loaders\n */\n loaderData?: RouterState[\"loaderData\"];\n /**\n * errors thrown from the current set of loaders\n */\n errors?: RouterState[\"errors\"];\n}\n\n/**\n * Cached info for active fetcher.load() instances so they can participate\n * in revalidation\n */\ninterface FetchLoadMatch {\n routeId: string;\n path: string;\n}\n\n/**\n * Identified fetcher.load() calls that need to be revalidated\n */\ninterface RevalidatingFetcher extends FetchLoadMatch {\n key: string;\n match: AgnosticDataRouteMatch | null;\n matches: AgnosticDataRouteMatch[] | null;\n}\n\n/**\n * Wrapper object to allow us to throw any response out from callLoaderOrAction\n * for queryRouter while preserving whether or not it was thrown or returned\n * from the loader/action\n */\ninterface QueryRouteResponse {\n type: ResultType.data | ResultType.error;\n response: Response;\n}\n\nconst validMutationMethodsArr: MutationFormMethod[] = [\n \"post\",\n \"put\",\n \"patch\",\n \"delete\",\n];\nconst validMutationMethods = new Set(\n validMutationMethodsArr\n);\n\nconst validRequestMethodsArr: FormMethod[] = [\n \"get\",\n ...validMutationMethodsArr,\n];\nconst validRequestMethods = new Set(validRequestMethodsArr);\n\nconst redirectStatusCodes = new Set([301, 302, 303, 307, 308]);\nconst redirectPreserveMethodStatusCodes = new Set([307, 308]);\n\nexport const IDLE_NAVIGATION: NavigationStates[\"Idle\"] = {\n state: \"idle\",\n location: undefined,\n formMethod: undefined,\n formAction: undefined,\n formEncType: undefined,\n formData: undefined,\n};\n\nexport const IDLE_FETCHER: FetcherStates[\"Idle\"] = {\n state: \"idle\",\n data: undefined,\n formMethod: undefined,\n formAction: undefined,\n formEncType: undefined,\n formData: undefined,\n};\n\nexport const IDLE_BLOCKER: BlockerUnblocked = {\n state: \"unblocked\",\n proceed: undefined,\n reset: undefined,\n location: undefined,\n};\n\nconst ABSOLUTE_URL_REGEX = /^(?:[a-z][a-z0-9+.-]*:|\\/\\/)/i;\n\nconst isBrowser =\n typeof window !== \"undefined\" &&\n typeof window.document !== \"undefined\" &&\n typeof window.document.createElement !== \"undefined\";\nconst isServer = !isBrowser;\n\nconst defaultDetectErrorBoundary = (route: AgnosticRouteObject) =>\n Boolean(route.hasErrorBoundary);\n//#endregion\n\n////////////////////////////////////////////////////////////////////////////////\n//#region createRouter\n////////////////////////////////////////////////////////////////////////////////\n\n/**\n * Create a router and listen to history POP navigations\n */\nexport function createRouter(init: RouterInit): Router {\n invariant(\n init.routes.length > 0,\n \"You must provide a non-empty routes array to createRouter\"\n );\n\n let detectErrorBoundary =\n init.detectErrorBoundary || defaultDetectErrorBoundary;\n\n // Routes keyed by ID\n let manifest: RouteManifest = {};\n // Routes in tree format for matching\n let dataRoutes = convertRoutesToDataRoutes(\n init.routes,\n detectErrorBoundary,\n undefined,\n manifest\n );\n let inFlightDataRoutes: AgnosticDataRouteObject[] | undefined;\n // Cleanup function for history\n let unlistenHistory: (() => void) | null = null;\n // Externally-provided functions to call on all state changes\n let subscribers = new Set();\n // Externally-provided object to hold scroll restoration locations during routing\n let savedScrollPositions: Record | null = null;\n // Externally-provided function to get scroll restoration keys\n let getScrollRestorationKey: GetScrollRestorationKeyFunction | null = null;\n // Externally-provided function to get current scroll position\n let getScrollPosition: GetScrollPositionFunction | null = null;\n // One-time flag to control the initial hydration scroll restoration. Because\n // we don't get the saved positions from ();\n\n // Track loads based on the order in which they started\n let incrementingLoadId = 0;\n\n // Track the outstanding pending navigation data load to be compared against\n // the globally incrementing load when a fetcher load lands after a completed\n // navigation\n let pendingNavigationLoadId = -1;\n\n // Fetchers that triggered data reloads as a result of their actions\n let fetchReloadIds = new Map();\n\n // Fetchers that triggered redirect navigations from their actions\n let fetchRedirectIds = new Set();\n\n // Most recent href/match for fetcher.load calls for fetchers\n let fetchLoadMatches = new Map();\n\n // Store DeferredData instances for active route matches. When a\n // route loader returns defer() we stick one in here. Then, when a nested\n // promise resolves we update loaderData. If a new navigation starts we\n // cancel active deferreds for eliminated routes.\n let activeDeferreds = new Map();\n\n // Store blocker functions in a separate Map outside of router state since\n // we don't need to update UI state if they change\n let blockerFunctions = new Map();\n\n // Flag to ignore the next history update, so we can revert the URL change on\n // a POP navigation that was blocked by the user without touching router state\n let ignoreNextHistoryUpdate = false;\n\n // Initialize the router, all side effects should be kicked off from here.\n // Implemented as a Fluent API for ease of:\n // let router = createRouter(init).initialize();\n function initialize() {\n // If history informs us of a POP navigation, start the navigation but do not update\n // state. We'll update our own state once the navigation completes\n unlistenHistory = init.history.listen(\n ({ action: historyAction, location, delta }) => {\n // Ignore this event if it was just us resetting the URL from a\n // blocked POP navigation\n if (ignoreNextHistoryUpdate) {\n ignoreNextHistoryUpdate = false;\n return;\n }\n\n warning(\n blockerFunctions.size === 0 || delta != null,\n \"You are trying to use a blocker on a POP navigation to a location \" +\n \"that was not created by @remix-run/router. This will fail silently in \" +\n \"production. This can happen if you are navigating outside the router \" +\n \"via `window.history.pushState`/`window.location.hash` instead of using \" +\n \"router navigation APIs. This can also happen if you are using \" +\n \"createHashRouter and the user manually changes the URL.\"\n );\n\n let blockerKey = shouldBlockNavigation({\n currentLocation: state.location,\n nextLocation: location,\n historyAction,\n });\n\n if (blockerKey && delta != null) {\n // Restore the URL to match the current UI, but don't update router state\n ignoreNextHistoryUpdate = true;\n init.history.go(delta * -1);\n\n // Put the blocker into a blocked state\n updateBlocker(blockerKey, {\n state: \"blocked\",\n location,\n proceed() {\n updateBlocker(blockerKey!, {\n state: \"proceeding\",\n proceed: undefined,\n reset: undefined,\n location,\n });\n // Re-do the same POP navigation we just blocked\n init.history.go(delta);\n },\n reset() {\n deleteBlocker(blockerKey!);\n updateState({ blockers: new Map(router.state.blockers) });\n },\n });\n return;\n }\n\n return startNavigation(historyAction, location);\n }\n );\n\n if (state.initialized) {\n return router;\n }\n\n let lazyMatches = state.matches.filter((m) => m.route.lazy);\n\n if (lazyMatches.length === 0) {\n // Kick off initial data load if needed. Use Pop to avoid modifying history\n startNavigation(HistoryAction.Pop, state.location);\n return router;\n }\n\n // Load lazy modules, then kick off initial data load if needed\n let lazyPromises = lazyMatches.map((m) =>\n loadLazyRouteModule(m.route, detectErrorBoundary, manifest)\n );\n Promise.all(lazyPromises).then(() => {\n let initialized =\n !state.matches.some((m) => m.route.loader) ||\n init.hydrationData != null;\n if (initialized) {\n // We already have required loaderData so we can just set initialized\n updateState({ initialized: true });\n } else {\n // We still need to kick off initial data loads\n startNavigation(HistoryAction.Pop, state.location);\n }\n });\n\n return router;\n }\n\n // Clean up a router and it's side effects\n function dispose() {\n if (unlistenHistory) {\n unlistenHistory();\n }\n subscribers.clear();\n pendingNavigationController && pendingNavigationController.abort();\n state.fetchers.forEach((_, key) => deleteFetcher(key));\n state.blockers.forEach((_, key) => deleteBlocker(key));\n }\n\n // Subscribe to state updates for the router\n function subscribe(fn: RouterSubscriber) {\n subscribers.add(fn);\n return () => subscribers.delete(fn);\n }\n\n // Update our state and notify the calling context of the change\n function updateState(newState: Partial): void {\n state = {\n ...state,\n ...newState,\n };\n subscribers.forEach((subscriber) => subscriber(state));\n }\n\n // Complete a navigation returning the state.navigation back to the IDLE_NAVIGATION\n // and setting state.[historyAction/location/matches] to the new route.\n // - Location is a required param\n // - Navigation will always be set to IDLE_NAVIGATION\n // - Can pass any other state in newState\n function completeNavigation(\n location: Location,\n newState: Partial>\n ): void {\n // Deduce if we're in a loading/actionReload state:\n // - We have committed actionData in the store\n // - The current navigation was a mutation submission\n // - We're past the submitting state and into the loading state\n // - The location being loaded is not the result of a redirect\n let isActionReload =\n state.actionData != null &&\n state.navigation.formMethod != null &&\n isMutationMethod(state.navigation.formMethod) &&\n state.navigation.state === \"loading\" &&\n location.state?._isRedirect !== true;\n\n let actionData: RouteData | null;\n if (newState.actionData) {\n if (Object.keys(newState.actionData).length > 0) {\n actionData = newState.actionData;\n } else {\n // Empty actionData -> clear prior actionData due to an action error\n actionData = null;\n }\n } else if (isActionReload) {\n // Keep the current data if we're wrapping up the action reload\n actionData = state.actionData;\n } else {\n // Clear actionData on any other completed navigations\n actionData = null;\n }\n\n // Always preserve any existing loaderData from re-used routes\n let loaderData = newState.loaderData\n ? mergeLoaderData(\n state.loaderData,\n newState.loaderData,\n newState.matches || [],\n newState.errors\n )\n : state.loaderData;\n\n // On a successful navigation we can assume we got through all blockers\n // so we can start fresh\n for (let [key] of blockerFunctions) {\n deleteBlocker(key);\n }\n\n // Always respect the user flag. Otherwise don't reset on mutation\n // submission navigations unless they redirect\n let preventScrollReset =\n pendingPreventScrollReset === true ||\n (state.navigation.formMethod != null &&\n isMutationMethod(state.navigation.formMethod) &&\n location.state?._isRedirect !== true);\n\n if (inFlightDataRoutes) {\n dataRoutes = inFlightDataRoutes;\n inFlightDataRoutes = undefined;\n }\n\n updateState({\n ...newState, // matches, errors, fetchers go through as-is\n actionData,\n loaderData,\n historyAction: pendingAction,\n location,\n initialized: true,\n navigation: IDLE_NAVIGATION,\n revalidation: \"idle\",\n restoreScrollPosition: getSavedScrollPosition(\n location,\n newState.matches || state.matches\n ),\n preventScrollReset,\n blockers: new Map(state.blockers),\n });\n\n if (isUninterruptedRevalidation) {\n // If this was an uninterrupted revalidation then do not touch history\n } else if (pendingAction === HistoryAction.Pop) {\n // Do nothing for POP - URL has already been updated\n } else if (pendingAction === HistoryAction.Push) {\n init.history.push(location, location.state);\n } else if (pendingAction === HistoryAction.Replace) {\n init.history.replace(location, location.state);\n }\n\n // Reset stateful navigation vars\n pendingAction = HistoryAction.Pop;\n pendingPreventScrollReset = false;\n isUninterruptedRevalidation = false;\n isRevalidationRequired = false;\n cancelledDeferredRoutes = [];\n cancelledFetcherLoads = [];\n }\n\n // Trigger a navigation event, which can either be a numerical POP or a PUSH\n // replace with an optional submission\n async function navigate(\n to: number | To,\n opts?: RouterNavigateOptions\n ): Promise {\n if (typeof to === \"number\") {\n init.history.go(to);\n return;\n }\n\n let { path, submission, error } = normalizeNavigateOptions(to, opts);\n\n let currentLocation = state.location;\n let nextLocation = createLocation(state.location, path, opts && opts.state);\n\n // When using navigate as a PUSH/REPLACE we aren't reading an already-encoded\n // URL from window.location, so we need to encode it here so the behavior\n // remains the same as POP and non-data-router usages. new URL() does all\n // the same encoding we'd get from a history.pushState/window.location read\n // without having to touch history\n nextLocation = {\n ...nextLocation,\n ...init.history.encodeLocation(nextLocation),\n };\n\n let userReplace = opts && opts.replace != null ? opts.replace : undefined;\n\n let historyAction = HistoryAction.Push;\n\n if (userReplace === true) {\n historyAction = HistoryAction.Replace;\n } else if (userReplace === false) {\n // no-op\n } else if (\n submission != null &&\n isMutationMethod(submission.formMethod) &&\n submission.formAction === state.location.pathname + state.location.search\n ) {\n // By default on submissions to the current location we REPLACE so that\n // users don't have to double-click the back button to get to the prior\n // location. If the user redirects to a different location from the\n // action/loader this will be ignored and the redirect will be a PUSH\n historyAction = HistoryAction.Replace;\n }\n\n let preventScrollReset =\n opts && \"preventScrollReset\" in opts\n ? opts.preventScrollReset === true\n : undefined;\n\n let blockerKey = shouldBlockNavigation({\n currentLocation,\n nextLocation,\n historyAction,\n });\n if (blockerKey) {\n // Put the blocker into a blocked state\n updateBlocker(blockerKey, {\n state: \"blocked\",\n location: nextLocation,\n proceed() {\n updateBlocker(blockerKey!, {\n state: \"proceeding\",\n proceed: undefined,\n reset: undefined,\n location: nextLocation,\n });\n // Send the same navigation through\n navigate(to, opts);\n },\n reset() {\n deleteBlocker(blockerKey!);\n updateState({ blockers: new Map(state.blockers) });\n },\n });\n return;\n }\n\n return await startNavigation(historyAction, nextLocation, {\n submission,\n // Send through the formData serialization error if we have one so we can\n // render at the right error boundary after we match routes\n pendingError: error,\n preventScrollReset,\n replace: opts && opts.replace,\n });\n }\n\n // Revalidate all current loaders. If a navigation is in progress or if this\n // is interrupted by a navigation, allow this to \"succeed\" by calling all\n // loaders during the next loader round\n function revalidate() {\n interruptActiveLoads();\n updateState({ revalidation: \"loading\" });\n\n // If we're currently submitting an action, we don't need to start a new\n // navigation, we'll just let the follow up loader execution call all loaders\n if (state.navigation.state === \"submitting\") {\n return;\n }\n\n // If we're currently in an idle state, start a new navigation for the current\n // action/location and mark it as uninterrupted, which will skip the history\n // update in completeNavigation\n if (state.navigation.state === \"idle\") {\n startNavigation(state.historyAction, state.location, {\n startUninterruptedRevalidation: true,\n });\n return;\n }\n\n // Otherwise, if we're currently in a loading state, just start a new\n // navigation to the navigation.location but do not trigger an uninterrupted\n // revalidation so that history correctly updates once the navigation completes\n startNavigation(\n pendingAction || state.historyAction,\n state.navigation.location,\n { overrideNavigation: state.navigation }\n );\n }\n\n // Start a navigation to the given action/location. Can optionally provide a\n // overrideNavigation which will override the normalLoad in the case of a redirect\n // navigation\n async function startNavigation(\n historyAction: HistoryAction,\n location: Location,\n opts?: {\n submission?: Submission;\n overrideNavigation?: Navigation;\n pendingError?: ErrorResponse;\n startUninterruptedRevalidation?: boolean;\n preventScrollReset?: boolean;\n replace?: boolean;\n }\n ): Promise {\n // Abort any in-progress navigations and start a new one. Unset any ongoing\n // uninterrupted revalidations unless told otherwise, since we want this\n // new navigation to update history normally\n pendingNavigationController && pendingNavigationController.abort();\n pendingNavigationController = null;\n pendingAction = historyAction;\n isUninterruptedRevalidation =\n (opts && opts.startUninterruptedRevalidation) === true;\n\n // Save the current scroll position every time we start a new navigation,\n // and track whether we should reset scroll on completion\n saveScrollPosition(state.location, state.matches);\n pendingPreventScrollReset = (opts && opts.preventScrollReset) === true;\n\n let routesToUse = inFlightDataRoutes || dataRoutes;\n let loadingNavigation = opts && opts.overrideNavigation;\n let matches = matchRoutes(routesToUse, location, init.basename);\n\n // Short circuit with a 404 on the root error boundary if we match nothing\n if (!matches) {\n let error = getInternalRouterError(404, { pathname: location.pathname });\n let { matches: notFoundMatches, route } =\n getShortCircuitMatches(routesToUse);\n // Cancel all pending deferred on 404s since we don't keep any routes\n cancelActiveDeferreds();\n completeNavigation(location, {\n matches: notFoundMatches,\n loaderData: {},\n errors: {\n [route.id]: error,\n },\n });\n return;\n }\n\n // Short circuit if it's only a hash change and not a mutation submission\n // For example, on /page#hash and submit a