@tianfeng98/hls.js/dist/hls.mjs.map

HLS.js is a JavaScript library that supports playing MPEG-TS and HEVC encoded HLS streams in browsers with support for MSE.

{"version":3,"file":"hls.mjs.map","sources":["node_modules/url-toolkit/src/url-toolkit.js","src/polyfills/number.ts","src/events.ts","src/errors.ts","src/utils/logger.ts","src/utils/attr-list.ts","src/loader/date-range.ts","src/loader/load-stats.ts","src/loader/fragment.ts","src/loader/level-details.ts","src/utils/numeric-encoding-utils.ts","src/utils/keysystem-util.ts","src/utils/global.ts","src/utils/mediakeys-helper.ts","src/utils/typed-array.ts","src/demux/id3.ts","src/utils/hex.ts","src/utils/mp4-tools.ts","src/loader/level-key.ts","src/utils/variable-substitution.ts","src/utils/mediasource-helper.ts","src/utils/codecs.ts","src/loader/m3u8-parser.ts","src/types/loader.ts","src/loader/playlist-loader.ts","src/utils/texttrack-utils.ts","src/types/demuxer.ts","src/controller/id3-track-controller.ts","src/controller/latency-controller.ts","src/types/level.ts","src/utils/level-helper.ts","src/utils/error-helper.ts","src/utils/binary-search.ts","src/controller/fragment-finders.ts","src/controller/error-controller.ts","src/controller/base-playlist-controller.ts","src/utils/ewma.ts","src/utils/ewma-bandwidth-estimator.ts","src/utils/mediacapabilities-helper.ts","src/utils/rendition-helper.ts","src/controller/abr-controller.ts","src/task-loop.ts","src/controller/fragment-tracker.ts","src/utils/buffer-helper.ts","src/types/transmuxer.ts","src/utils/discontinuities.ts","src/loader/fragment-loader.ts","src/crypt/aes-crypto.ts","src/crypt/fast-aes-key.ts","src/crypt/aes-decryptor.ts","src/crypt/decrypter.ts","src/utils/time-ranges.ts","src/controller/base-stream-controller.ts","src/demux/chunk-cache.ts","src/demux/inject-worker.ts","src/demux/dummy-demuxed-track.ts","src/demux/audio/base-audio-demuxer.ts","src/demux/audio/adts.ts","src/demux/audio/mpegaudio.ts","src/demux/audio/aacdemuxer.ts","src/demux/mp4demuxer.ts","src/demux/audio/dolby.ts","src/demux/audio/ac3-demuxer.ts","src/demux/video/base-video-parser.ts","src/demux/video/exp-golomb.ts","src/demux/video/avc-video-parser.ts","src/demux/video/hevc-parser.ts","src/demux/video/hevc-video-parser.ts","src/demux/sample-aes.ts","src/demux/tsdemuxer.ts","src/demux/audio/mp3demuxer.ts","src/remux/aac-helper.ts","src/remux/hevc-helper.ts","src/remux/mp4-generator.ts","src/utils/timescale-conversion.ts","src/remux/mp4-remuxer.ts","src/remux/passthrough-remuxer.ts","src/demux/transmuxer.ts","node_modules/eventemitter3/index.js","src/demux/transmuxer-interface.ts","src/utils/media-option-attributes.ts","src/controller/audio-stream-controller.ts","src/controller/audio-track-controller.ts","src/controller/subtitle-stream-controller.ts","src/controller/subtitle-track-controller.ts","src/controller/buffer-operation-queue.ts","src/controller/buffer-controller.ts","src/utils/cea-608-parser.ts","src/utils/output-filter.ts","src/utils/vttcue.ts","src/utils/vttparser.ts","src/utils/webvtt-parser.ts","src/utils/imsc1-ttml-parser.ts","src/controller/timeline-controller.ts","src/controller/cap-level-controller.ts","src/controller/fps-controller.ts","src/controller/eme-controller.ts","src/types/cmcd.ts","src/controller/cmcd-controller.ts","src/controller/content-steering-controller.ts","src/utils/xhr-loader.ts","src/utils/fetch-loader.ts","src/utils/cues.ts","src/config.ts","src/controller/level-controller.ts","src/loader/key-loader.ts","src/is-supported.ts","src/controller/gap-controller.ts","src/controller/stream-controller.ts","src/hls.ts"],"sourcesContent":["// 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 <net_loc> is non-empty, we skip to\n        // Step 7.  Otherwise, the embedded URL inherits the <net_loc>\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 <params> is non-empty, we skip to\n            // step 7; otherwise, it inherits the <params> of the base\n            // URL (if any) and\n            if (!relativeParts.params) {\n              builtParts.params = baseParts.params;\n              // 5b) if the embedded URL's <query> is non-empty, we skip to\n              // step 7; otherwise, it inherits the <query> 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 \"<segment>/../\", where <segment> 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 \"<segment>/..\", where <segment> is a\n      // complete path segment not equal to \"..\", that\n      // \"<segment>/..\" 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","export const isFiniteNumber =\n  Number.isFinite ||\n  function (value) {\n    return typeof value === 'number' && isFinite(value);\n  };\n\nexport const MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;\n","import {\n  ManifestLoadedData,\n  ManifestLoadingData,\n  MediaAttachedData,\n  MediaAttachingData,\n  LevelLoadingData,\n  LevelLoadedData,\n  ManifestParsedData,\n  LevelUpdatedData,\n  LevelsUpdatedData,\n  FragParsingUserdataData,\n  FragDecryptedData,\n  FragLoadedData,\n  InitPTSFoundData,\n  CuesParsedData,\n  SubtitleFragProcessedData,\n  NonNativeTextTracksData,\n  FragLoadingData,\n  AudioTrackLoadedData,\n  SubtitleTrackLoadedData,\n  ErrorData,\n  AudioTrackSwitchingData,\n  AudioTrackSwitchedData,\n  KeyLoadedData,\n  KeyLoadingData,\n  SubtitleTrackSwitchData,\n  SubtitleTracksUpdatedData,\n  LevelSwitchedData,\n  FragChangedData,\n  BufferAppendingData,\n  BufferCodecsData,\n  FragParsingMetadataData,\n  FragParsingInitSegmentData,\n  FragBufferedData,\n  BufferFlushingData,\n  BufferEOSData,\n  LevelSwitchingData,\n  MaxAutoLevelUpdatedData,\n  FPSDropLevelCappingData,\n  FPSDropData,\n  BufferCreatedData,\n  BufferAppendedData,\n  LevelPTSUpdatedData,\n  FragParsedData,\n  AudioTracksUpdatedData,\n  FragLoadEmergencyAbortedData,\n  BackBufferData,\n  LiveBackBufferData,\n  TrackLoadingData,\n  BufferFlushedData,\n  SteeringManifestLoadedData,\n} from './types/events';\n\nexport enum Events {\n  // Fired before MediaSource is attaching to media element\n  MEDIA_ATTACHING = 'hlsMediaAttaching',\n  // Fired when MediaSource has been successfully attached to media element\n  MEDIA_ATTACHED = 'hlsMediaAttached',\n  // Fired before detaching MediaSource from media element\n  MEDIA_DETACHING = 'hlsMediaDetaching',\n  // Fired when MediaSource has been detached from media element\n  MEDIA_DETACHED = 'hlsMediaDetached',\n  // Fired when the buffer is going to be reset\n  BUFFER_RESET = 'hlsBufferReset',\n  // Fired when we know about the codecs that we need buffers for to push into - data: {tracks : { container, codec, levelCodec, initSegment, metadata }}\n  BUFFER_CODECS = 'hlsBufferCodecs',\n  // fired when sourcebuffers have been created - data: { tracks : tracks }\n  BUFFER_CREATED = 'hlsBufferCreated',\n  // fired when we append a segment to the buffer - data: { segment: segment object }\n  BUFFER_APPENDING = 'hlsBufferAppending',\n  // fired when we are done with appending a media segment to the buffer - data : { parent : segment parent that triggered BUFFER_APPENDING, pending : nb of segments waiting for appending for this segment parent}\n  BUFFER_APPENDED = 'hlsBufferAppended',\n  // fired when the stream is finished and we want to notify the media buffer that there will be no more data - data: { }\n  BUFFER_EOS = 'hlsBufferEos',\n  // fired when the media buffer should be flushed - data { startOffset, endOffset }\n  BUFFER_FLUSHING = 'hlsBufferFlushing',\n  // fired when the media buffer has been flushed - data: { }\n  BUFFER_FLUSHED = 'hlsBufferFlushed',\n  // fired to signal that a manifest loading starts - data: { url : manifestURL}\n  MANIFEST_LOADING = 'hlsManifestLoading',\n  // fired after manifest has been loaded - data: { levels : [available quality levels], audioTracks : [ available audio tracks ], url : manifestURL, stats : LoaderStats }\n  MANIFEST_LOADED = 'hlsManifestLoaded',\n  // fired after manifest has been parsed - data: { levels : [available quality levels], firstLevel : index of first quality level appearing in Manifest}\n  MANIFEST_PARSED = 'hlsManifestParsed',\n  // fired when a level switch is requested - data: { level : id of new level }\n  LEVEL_SWITCHING = 'hlsLevelSwitching',\n  // fired when a level switch is effective - data: { level : id of new level }\n  LEVEL_SWITCHED = 'hlsLevelSwitched',\n  // fired when a level playlist loading starts - data: { url : level URL, level : id of level being loaded}\n  LEVEL_LOADING = 'hlsLevelLoading',\n  // fired when a level playlist loading finishes - data: { details : levelDetails object, level : id of loaded level, stats : LoaderStats }\n  LEVEL_LOADED = 'hlsLevelLoaded',\n  // fired when a level's details have been updated based on previous details, after it has been loaded - data: { details : levelDetails object, level : id of updated level }\n  LEVEL_UPDATED = 'hlsLevelUpdated',\n  // fired when a level's PTS information has been updated after parsing a fragment - data: { details : levelDetails object, level : id of updated level, drift: PTS drift observed when parsing last fragment }\n  LEVEL_PTS_UPDATED = 'hlsLevelPtsUpdated',\n  // fired to notify that levels have changed after removing a level - data: { levels : [available quality levels] }\n  LEVELS_UPDATED = 'hlsLevelsUpdated',\n  // fired to notify that audio track lists has been updated - data: { audioTracks : audioTracks }\n  AUDIO_TRACKS_UPDATED = 'hlsAudioTracksUpdated',\n  // fired when an audio track switching is requested - data: { id : audio track id }\n  AUDIO_TRACK_SWITCHING = 'hlsAudioTrackSwitching',\n  // fired when an audio track switch actually occurs - data: { id : audio track id }\n  AUDIO_TRACK_SWITCHED = 'hlsAudioTrackSwitched',\n  // fired when an audio track loading starts - data: { url : audio track URL, id : audio track id }\n  AUDIO_TRACK_LOADING = 'hlsAudioTrackLoading',\n  // fired when an audio track loading finishes - data: { details : levelDetails object, id : audio track id, stats : LoaderStats }\n  AUDIO_TRACK_LOADED = 'hlsAudioTrackLoaded',\n  // fired to notify that subtitle track lists has been updated - data: { subtitleTracks : subtitleTracks }\n  SUBTITLE_TRACKS_UPDATED = 'hlsSubtitleTracksUpdated',\n  // fired to notify that subtitle tracks were cleared as a result of stopping the media\n  SUBTITLE_TRACKS_CLEARED = 'hlsSubtitleTracksCleared',\n  // fired when an subtitle track switch occurs - data: { id : subtitle track id }\n  SUBTITLE_TRACK_SWITCH = 'hlsSubtitleTrackSwitch',\n  // fired when a subtitle track loading starts - data: { url : subtitle track URL, id : subtitle track id }\n  SUBTITLE_TRACK_LOADING = 'hlsSubtitleTrackLoading',\n  // fired when a subtitle track loading finishes - data: { details : levelDetails object, id : subtitle track id, stats : LoaderStats }\n  SUBTITLE_TRACK_LOADED = 'hlsSubtitleTrackLoaded',\n  // fired when a subtitle fragment has been processed - data: { success : boolean, frag : the processed frag }\n  SUBTITLE_FRAG_PROCESSED = 'hlsSubtitleFragProcessed',\n  // fired when a set of VTTCues to be managed externally has been parsed - data: { type: string, track: string, cues: [ VTTCue ] }\n  CUES_PARSED = 'hlsCuesParsed',\n  // fired when a text track to be managed externally is found - data: { tracks: [ { label: string, kind: string, default: boolean } ] }\n  NON_NATIVE_TEXT_TRACKS_FOUND = 'hlsNonNativeTextTracksFound',\n  // fired when the first timestamp is found - data: { id : demuxer id, initPTS: initPTS, timescale: timescale, frag : fragment object }\n  INIT_PTS_FOUND = 'hlsInitPtsFound',\n  // fired when a fragment loading starts - data: { frag : fragment object }\n  FRAG_LOADING = 'hlsFragLoading',\n  // fired when a fragment loading is progressing - data: { frag : fragment object, { trequest, tfirst, loaded } }\n  // FRAG_LOAD_PROGRESS = 'hlsFragLoadProgress',\n  // Identifier for fragment load aborting for emergency switch down - data: { frag : fragment object }\n  FRAG_LOAD_EMERGENCY_ABORTED = 'hlsFragLoadEmergencyAborted',\n  // fired when a fragment loading is completed - data: { frag : fragment object, payload : fragment payload, stats : LoaderStats }\n  FRAG_LOADED = 'hlsFragLoaded',\n  // fired when a fragment has finished decrypting - data: { id : demuxer id, frag: fragment object, payload : fragment payload, stats : { tstart, tdecrypt } }\n  FRAG_DECRYPTED = 'hlsFragDecrypted',\n  // fired when Init Segment has been extracted from fragment - data: { id : demuxer id, frag: fragment object, moov : moov MP4 box, codecs : codecs found while parsing fragment }\n  FRAG_PARSING_INIT_SEGMENT = 'hlsFragParsingInitSegment',\n  // fired when parsing sei text is completed - data: { id : demuxer id, frag: fragment object, samples : [ sei samples pes ] }\n  FRAG_PARSING_USERDATA = 'hlsFragParsingUserdata',\n  // fired when parsing id3 is completed - data: { id : demuxer id, frag: fragment object, samples : [ id3 samples pes ] }\n  FRAG_PARSING_METADATA = 'hlsFragParsingMetadata',\n  // fired when data have been extracted from fragment - data: { id : demuxer id, frag: fragment object, data1 : moof MP4 box or TS fragments, data2 : mdat MP4 box or null}\n  // FRAG_PARSING_DATA = 'hlsFragParsingData',\n  // fired when fragment parsing is completed - data: { id : demuxer id, frag: fragment object }\n  FRAG_PARSED = 'hlsFragParsed',\n  // fired when fragment remuxed MP4 boxes have all been appended into SourceBuffer - data: { id : demuxer id, frag : fragment object, stats : LoaderStats }\n  FRAG_BUFFERED = 'hlsFragBuffered',\n  // fired when fragment matching with current media position is changing - data : { id : demuxer id, frag : fragment object }\n  FRAG_CHANGED = 'hlsFragChanged',\n  // Identifier for a FPS drop event - data: { currentDropped, currentDecoded, totalDroppedFrames }\n  FPS_DROP = 'hlsFpsDrop',\n  // triggered when FPS drop triggers auto level capping - data: { level, droppedLevel }\n  FPS_DROP_LEVEL_CAPPING = 'hlsFpsDropLevelCapping',\n  // triggered when maxAutoLevel changes - data { autoLevelCapping, levels, maxAutoLevel, minAutoLevel, maxHdcpLevel }\n  MAX_AUTO_LEVEL_UPDATED = 'hlsMaxAutoLevelUpdated',\n  // Identifier for an error event - data: { type : error type, details : error details, fatal : if true, hls.js cannot/will not try to recover, if false, hls.js will try to recover,other error specific data }\n  ERROR = 'hlsError',\n  // fired when hls.js instance starts destroying. Different from MEDIA_DETACHED as one could want to detach and reattach a media to the instance of hls.js to handle mid-rolls for example - data: { }\n  DESTROYING = 'hlsDestroying',\n  // fired when a decrypt key loading starts - data: { frag : fragment object }\n  KEY_LOADING = 'hlsKeyLoading',\n  // fired when a decrypt key loading is completed - data: { frag : fragment object, keyInfo : KeyLoaderInfo }\n  KEY_LOADED = 'hlsKeyLoaded',\n  // deprecated; please use BACK_BUFFER_REACHED - data : { bufferEnd: number }\n  LIVE_BACK_BUFFER_REACHED = 'hlsLiveBackBufferReached',\n  // fired when the back buffer is reached as defined by the backBufferLength config option - data : { bufferEnd: number }\n  BACK_BUFFER_REACHED = 'hlsBackBufferReached',\n  // fired after steering manifest has been loaded - data: { steeringManifest: SteeringManifest object, url: steering manifest URL }\n  STEERING_MANIFEST_LOADED = 'hlsSteeringManifestLoaded',\n}\n\n/**\n * Defines each Event type and payload by Event name. Used in {@link hls.js#HlsEventEmitter} to strongly type the event listener API.\n */\nexport interface HlsListeners {\n  [Events.MEDIA_ATTACHING]: (\n    event: Events.MEDIA_ATTACHING,\n    data: MediaAttachingData,\n  ) => void;\n  [Events.MEDIA_ATTACHED]: (\n    event: Events.MEDIA_ATTACHED,\n    data: MediaAttachedData,\n  ) => void;\n  [Events.MEDIA_DETACHING]: (event: Events.MEDIA_DETACHING) => void;\n  [Events.MEDIA_DETACHED]: (event: Events.MEDIA_DETACHED) => void;\n  [Events.BUFFER_RESET]: (event: Events.BUFFER_RESET) => void;\n  [Events.BUFFER_CODECS]: (\n    event: Events.BUFFER_CODECS,\n    data: BufferCodecsData,\n  ) => void;\n  [Events.BUFFER_CREATED]: (\n    event: Events.BUFFER_CREATED,\n    data: BufferCreatedData,\n  ) => void;\n  [Events.BUFFER_APPENDING]: (\n    event: Events.BUFFER_APPENDING,\n    data: BufferAppendingData,\n  ) => void;\n  [Events.BUFFER_APPENDED]: (\n    event: Events.BUFFER_APPENDED,\n    data: BufferAppendedData,\n  ) => void;\n  [Events.BUFFER_EOS]: (event: Events.BUFFER_EOS, data: BufferEOSData) => void;\n  [Events.BUFFER_FLUSHING]: (\n    event: Events.BUFFER_FLUSHING,\n    data: BufferFlushingData,\n  ) => void;\n  [Events.BUFFER_FLUSHED]: (\n    event: Events.BUFFER_FLUSHED,\n    data: BufferFlushedData,\n  ) => void;\n  [Events.MANIFEST_LOADING]: (\n    event: Events.MANIFEST_LOADING,\n    data: ManifestLoadingData,\n  ) => void;\n  [Events.MANIFEST_LOADED]: (\n    event: Events.MANIFEST_LOADED,\n    data: ManifestLoadedData,\n  ) => void;\n  [Events.MANIFEST_PARSED]: (\n    event: Events.MANIFEST_PARSED,\n    data: ManifestParsedData,\n  ) => void;\n  [Events.LEVEL_SWITCHING]: (\n    event: Events.LEVEL_SWITCHING,\n    data: LevelSwitchingData,\n  ) => void;\n  [Events.LEVEL_SWITCHED]: (\n    event: Events.LEVEL_SWITCHED,\n    data: LevelSwitchedData,\n  ) => void;\n  [Events.LEVEL_LOADING]: (\n    event: Events.LEVEL_LOADING,\n    data: LevelLoadingData,\n  ) => void;\n  [Events.LEVEL_LOADED]: (\n    event: Events.LEVEL_LOADED,\n    data: LevelLoadedData,\n  ) => void;\n  [Events.LEVEL_UPDATED]: (\n    event: Events.LEVEL_UPDATED,\n    data: LevelUpdatedData,\n  ) => void;\n  [Events.LEVEL_PTS_UPDATED]: (\n    event: Events.LEVEL_PTS_UPDATED,\n    data: LevelPTSUpdatedData,\n  ) => void;\n  [Events.LEVELS_UPDATED]: (\n    event: Events.LEVELS_UPDATED,\n    data: LevelsUpdatedData,\n  ) => void;\n  [Events.AUDIO_TRACKS_UPDATED]: (\n    event: Events.AUDIO_TRACKS_UPDATED,\n    data: AudioTracksUpdatedData,\n  ) => void;\n  [Events.AUDIO_TRACK_SWITCHING]: (\n    event: Events.AUDIO_TRACK_SWITCHING,\n    data: AudioTrackSwitchingData,\n  ) => void;\n  [Events.AUDIO_TRACK_SWITCHED]: (\n    event: Events.AUDIO_TRACK_SWITCHED,\n    data: AudioTrackSwitchedData,\n  ) => void;\n  [Events.AUDIO_TRACK_LOADING]: (\n    event: Events.AUDIO_TRACK_LOADING,\n    data: TrackLoadingData,\n  ) => void;\n  [Events.AUDIO_TRACK_LOADED]: (\n    event: Events.AUDIO_TRACK_LOADED,\n    data: AudioTrackLoadedData,\n  ) => void;\n  [Events.SUBTITLE_TRACKS_UPDATED]: (\n    event: Events.SUBTITLE_TRACKS_UPDATED,\n    data: SubtitleTracksUpdatedData,\n  ) => void;\n  [Events.SUBTITLE_TRACKS_CLEARED]: (\n    event: Events.SUBTITLE_TRACKS_CLEARED,\n  ) => void;\n  [Events.SUBTITLE_TRACK_SWITCH]: (\n    event: Events.SUBTITLE_TRACK_SWITCH,\n    data: SubtitleTrackSwitchData,\n  ) => void;\n  [Events.SUBTITLE_TRACK_LOADING]: (\n    event: Events.SUBTITLE_TRACK_LOADING,\n    data: TrackLoadingData,\n  ) => void;\n  [Events.SUBTITLE_TRACK_LOADED]: (\n    event: Events.SUBTITLE_TRACK_LOADED,\n    data: SubtitleTrackLoadedData,\n  ) => void;\n  [Events.SUBTITLE_FRAG_PROCESSED]: (\n    event: Events.SUBTITLE_FRAG_PROCESSED,\n    data: SubtitleFragProcessedData,\n  ) => void;\n  [Events.CUES_PARSED]: (\n    event: Events.CUES_PARSED,\n    data: CuesParsedData,\n  ) => void;\n  [Events.NON_NATIVE_TEXT_TRACKS_FOUND]: (\n    event: Events.NON_NATIVE_TEXT_TRACKS_FOUND,\n    data: NonNativeTextTracksData,\n  ) => void;\n  [Events.INIT_PTS_FOUND]: (\n    event: Events.INIT_PTS_FOUND,\n    data: InitPTSFoundData,\n  ) => void;\n  [Events.FRAG_LOADING]: (\n    event: Events.FRAG_LOADING,\n    data: FragLoadingData,\n  ) => void;\n  // [Events.FRAG_LOAD_PROGRESS]: TodoEventType\n  [Events.FRAG_LOAD_EMERGENCY_ABORTED]: (\n    event: Events.FRAG_LOAD_EMERGENCY_ABORTED,\n    data: FragLoadEmergencyAbortedData,\n  ) => void;\n  [Events.FRAG_LOADED]: (\n    event: Events.FRAG_LOADED,\n    data: FragLoadedData,\n  ) => void;\n  [Events.FRAG_DECRYPTED]: (\n    event: Events.FRAG_DECRYPTED,\n    data: FragDecryptedData,\n  ) => void;\n  [Events.FRAG_PARSING_INIT_SEGMENT]: (\n    event: Events.FRAG_PARSING_INIT_SEGMENT,\n    data: FragParsingInitSegmentData,\n  ) => void;\n  [Events.FRAG_PARSING_USERDATA]: (\n    event: Events.FRAG_PARSING_USERDATA,\n    data: FragParsingUserdataData,\n  ) => void;\n  [Events.FRAG_PARSING_METADATA]: (\n    event: Events.FRAG_PARSING_METADATA,\n    data: FragParsingMetadataData,\n  ) => void;\n  // [Events.FRAG_PARSING_DATA]: TodoEventType\n  [Events.FRAG_PARSED]: (\n    event: Events.FRAG_PARSED,\n    data: FragParsedData,\n  ) => void;\n  [Events.FRAG_BUFFERED]: (\n    event: Events.FRAG_BUFFERED,\n    data: FragBufferedData,\n  ) => void;\n  [Events.FRAG_CHANGED]: (\n    event: Events.FRAG_CHANGED,\n    data: FragChangedData,\n  ) => void;\n  [Events.FPS_DROP]: (event: Events.FPS_DROP, data: FPSDropData) => void;\n  [Events.FPS_DROP_LEVEL_CAPPING]: (\n    event: Events.FPS_DROP_LEVEL_CAPPING,\n    data: FPSDropLevelCappingData,\n  ) => void;\n  [Events.MAX_AUTO_LEVEL_UPDATED]: (\n    event: Events.MAX_AUTO_LEVEL_UPDATED,\n    data: MaxAutoLevelUpdatedData,\n  ) => void;\n  [Events.ERROR]: (event: Events.ERROR, data: ErrorData) => void;\n  [Events.DESTROYING]: (event: Events.DESTROYING) => void;\n  [Events.KEY_LOADING]: (\n    event: Events.KEY_LOADING,\n    data: KeyLoadingData,\n  ) => void;\n  [Events.KEY_LOADED]: (event: Events.KEY_LOADED, data: KeyLoadedData) => void;\n  [Events.LIVE_BACK_BUFFER_REACHED]: (\n    event: Events.LIVE_BACK_BUFFER_REACHED,\n    data: LiveBackBufferData,\n  ) => void;\n  [Events.BACK_BUFFER_REACHED]: (\n    event: Events.BACK_BUFFER_REACHED,\n    data: BackBufferData,\n  ) => void;\n  [Events.STEERING_MANIFEST_LOADED]: (\n    event: Events.STEERING_MANIFEST_LOADED,\n    data: SteeringManifestLoadedData,\n  ) => void;\n}\nexport interface HlsEventEmitter {\n  on<E extends keyof HlsListeners, Context = undefined>(\n    event: E,\n    listener: HlsListeners[E],\n    context?: Context,\n  ): void;\n  once<E extends keyof HlsListeners, Context = undefined>(\n    event: E,\n    listener: HlsListeners[E],\n    context?: Context,\n  ): void;\n\n  removeAllListeners<E extends keyof HlsListeners>(event?: E): void;\n  off<E extends keyof HlsListeners, Context = undefined>(\n    event: E,\n    listener?: HlsListeners[E],\n    context?: Context,\n    once?: boolean,\n  ): void;\n\n  listeners<E extends keyof HlsListeners>(event: E): HlsListeners[E][];\n  emit<E extends keyof HlsListeners>(\n    event: E,\n    name: E,\n    eventObject: Parameters<HlsListeners[E]>[1],\n  ): boolean;\n  listenerCount<E extends keyof HlsListeners>(event: E): number;\n}\n","export enum ErrorTypes {\n  // Identifier for a network error (loading error / timeout ...)\n  NETWORK_ERROR = 'networkError',\n  // Identifier for a media Error (video/parsing/mediasource error)\n  MEDIA_ERROR = 'mediaError',\n  // EME (encrypted media extensions) errors\n  KEY_SYSTEM_ERROR = 'keySystemError',\n  // Identifier for a mux Error (demuxing/remuxing)\n  MUX_ERROR = 'muxError',\n  // Identifier for all other errors\n  OTHER_ERROR = 'otherError',\n}\n\nexport enum ErrorDetails {\n  KEY_SYSTEM_NO_KEYS = 'keySystemNoKeys',\n  KEY_SYSTEM_NO_ACCESS = 'keySystemNoAccess',\n  KEY_SYSTEM_NO_SESSION = 'keySystemNoSession',\n  KEY_SYSTEM_NO_CONFIGURED_LICENSE = 'keySystemNoConfiguredLicense',\n  KEY_SYSTEM_LICENSE_REQUEST_FAILED = 'keySystemLicenseRequestFailed',\n  KEY_SYSTEM_SERVER_CERTIFICATE_REQUEST_FAILED = 'keySystemServerCertificateRequestFailed',\n  KEY_SYSTEM_SERVER_CERTIFICATE_UPDATE_FAILED = 'keySystemServerCertificateUpdateFailed',\n  KEY_SYSTEM_SESSION_UPDATE_FAILED = 'keySystemSessionUpdateFailed',\n  KEY_SYSTEM_STATUS_OUTPUT_RESTRICTED = 'keySystemStatusOutputRestricted',\n  KEY_SYSTEM_STATUS_INTERNAL_ERROR = 'keySystemStatusInternalError',\n  // Identifier for a manifest load error - data: { url : faulty URL, response : { code: error code, text: error text }}\n  MANIFEST_LOAD_ERROR = 'manifestLoadError',\n  // Identifier for a manifest load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}\n  MANIFEST_LOAD_TIMEOUT = 'manifestLoadTimeOut',\n  // Identifier for a manifest parsing error - data: { url : faulty URL, reason : error reason}\n  MANIFEST_PARSING_ERROR = 'manifestParsingError',\n  // Identifier for a manifest with only incompatible codecs error - data: { url : faulty URL, reason : error reason}\n  MANIFEST_INCOMPATIBLE_CODECS_ERROR = 'manifestIncompatibleCodecsError',\n  // Identifier for a level which contains no fragments - data: { url: faulty URL, reason: \"no fragments found in level\", level: index of the bad level }\n  LEVEL_EMPTY_ERROR = 'levelEmptyError',\n  // Identifier for a level load error - data: { url : faulty URL, response : { code: error code, text: error text }}\n  LEVEL_LOAD_ERROR = 'levelLoadError',\n  // Identifier for a level load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}\n  LEVEL_LOAD_TIMEOUT = 'levelLoadTimeOut',\n  // Identifier for a level parse error - data: { url : faulty URL, error: Error, reason: error message }\n  LEVEL_PARSING_ERROR = 'levelParsingError',\n  // Identifier for a level switch error - data: { level : faulty level Id, event : error description}\n  LEVEL_SWITCH_ERROR = 'levelSwitchError',\n  // Identifier for an audio track load error - data: { url : faulty URL, response : { code: error code, text: error text }}\n  AUDIO_TRACK_LOAD_ERROR = 'audioTrackLoadError',\n  // Identifier for an audio track load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}\n  AUDIO_TRACK_LOAD_TIMEOUT = 'audioTrackLoadTimeOut',\n  // Identifier for a subtitle track load error - data: { url : faulty URL, response : { code: error code, text: error text }}\n  SUBTITLE_LOAD_ERROR = 'subtitleTrackLoadError',\n  // Identifier for a subtitle track load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}\n  SUBTITLE_TRACK_LOAD_TIMEOUT = 'subtitleTrackLoadTimeOut',\n  // Identifier for fragment load error - data: { frag : fragment object, response : { code: error code, text: error text }}\n  FRAG_LOAD_ERROR = 'fragLoadError',\n  // Identifier for fragment load timeout error - data: { frag : fragment object}\n  FRAG_LOAD_TIMEOUT = 'fragLoadTimeOut',\n  // Identifier for a fragment decryption error event - data: {id : demuxer Id,frag: fragment object, reason : parsing error description }\n  FRAG_DECRYPT_ERROR = 'fragDecryptError',\n  // Identifier for a fragment parsing error event - data: { id : demuxer Id, reason : parsing error description }\n  // will be renamed DEMUX_PARSING_ERROR and switched to MUX_ERROR in the next major release\n  FRAG_PARSING_ERROR = 'fragParsingError',\n  // Identifier for a fragment or part load skipped because of a GAP tag or attribute\n  FRAG_GAP = 'fragGap',\n  // Identifier for a remux alloc error event - data: { id : demuxer Id, frag : fragment object, bytes : nb of bytes on which allocation failed , reason : error text }\n  REMUX_ALLOC_ERROR = 'remuxAllocError',\n  // Identifier for decrypt key load error - data: { frag : fragment object, response : { code: error code, text: error text }}\n  KEY_LOAD_ERROR = 'keyLoadError',\n  // Identifier for decrypt key load timeout error - data: { frag : fragment object}\n  KEY_LOAD_TIMEOUT = 'keyLoadTimeOut',\n  // Triggered when an exception occurs while adding a sourceBuffer to MediaSource - data : { error : exception , mimeType : mimeType }\n  BUFFER_ADD_CODEC_ERROR = 'bufferAddCodecError',\n  // Triggered when source buffer(s) could not be created using level (manifest CODECS attribute), parsed media, or best guess codec(s) - data: { reason : error reason }\n  BUFFER_INCOMPATIBLE_CODECS_ERROR = 'bufferIncompatibleCodecsError',\n  // Identifier for a buffer append error - data: append error description\n  BUFFER_APPEND_ERROR = 'bufferAppendError',\n  // Identifier for a buffer appending error event - data: appending error description\n  BUFFER_APPENDING_ERROR = 'bufferAppendingError',\n  // Identifier for a buffer stalled error event\n  BUFFER_STALLED_ERROR = 'bufferStalledError',\n  // Identifier for a buffer full event\n  BUFFER_FULL_ERROR = 'bufferFullError',\n  // Identifier for a buffer seek over hole event\n  BUFFER_SEEK_OVER_HOLE = 'bufferSeekOverHole',\n  // Identifier for a buffer nudge on stall (playback is stuck although currentTime is in a buffered area)\n  BUFFER_NUDGE_ON_STALL = 'bufferNudgeOnStall',\n  // Identifier for an internal exception happening inside hls.js while handling an event\n  INTERNAL_EXCEPTION = 'internalException',\n  // Identifier for an internal call to abort a loader\n  INTERNAL_ABORTED = 'aborted',\n  // Uncategorized error\n  UNKNOWN = 'unknown',\n}\n","export interface ILogFunction {\n  (message?: any, ...optionalParams: any[]): void;\n}\n\nexport interface ILogger {\n  trace: ILogFunction;\n  debug: ILogFunction;\n  log: ILogFunction;\n  warn: ILogFunction;\n  info: ILogFunction;\n  error: ILogFunction;\n}\n\nconst noop: ILogFunction = function () {};\n\nconst fakeLogger: ILogger = {\n  trace: noop,\n  debug: noop,\n  log: noop,\n  warn: noop,\n  info: noop,\n  error: noop,\n};\n\nlet exportedLogger: ILogger = fakeLogger;\n\n// let lastCallTime;\n// function formatMsgWithTimeInfo(type, msg) {\n//   const now = Date.now();\n//   const diff = lastCallTime ? '+' + (now - lastCallTime) : '0';\n//   lastCallTime = now;\n//   msg = (new Date(now)).toISOString() + ' | [' +  type + '] > ' + msg + ' ( ' + diff + ' ms )';\n//   return msg;\n// }\n\nfunction consolePrintFn(type: string): ILogFunction {\n  const func: ILogFunction = self.console[type];\n  if (func) {\n    return func.bind(self.console, `[${type}] >`);\n  }\n  return noop;\n}\n\nfunction exportLoggerFunctions(\n  debugConfig: boolean | ILogger,\n  ...functions: string[]\n): void {\n  functions.forEach(function (type) {\n    exportedLogger[type] = debugConfig[type]\n      ? debugConfig[type].bind(debugConfig)\n      : consolePrintFn(type);\n  });\n}\n\nexport function enableLogs(debugConfig: boolean | ILogger, id: string): void {\n  // check that console is available\n  if (\n    (self.console && debugConfig === true) ||\n    typeof debugConfig === 'object'\n  ) {\n    exportLoggerFunctions(\n      debugConfig,\n      // Remove out from list here to hard-disable a log-level\n      // 'trace',\n      'debug',\n      'log',\n      'info',\n      'warn',\n      'error',\n    );\n    // Some browsers don't allow to use bind on console object anyway\n    // fallback to default if needed\n    try {\n      exportedLogger.log(\n        `Debug logs enabled for \"${id}\" in hls.js version ${__VERSION__}`,\n      );\n    } catch (e) {\n      exportedLogger = fakeLogger;\n    }\n  } else {\n    exportedLogger = fakeLogger;\n  }\n}\n\nexport const logger: ILogger = exportedLogger;\n","const DECIMAL_RESOLUTION_REGEX = /^(\\d+)x(\\d+)$/;\nconst ATTR_LIST_REGEX = /(.+?)=(\".*?\"|.*?)(?:,|$)/g;\n\n// adapted from https://github.com/kanongil/node-m3u8parse/blob/master/attrlist.js\nexport class AttrList {\n  [key: string]: any;\n\n  constructor(attrs: string | Record<string, any>) {\n    if (typeof attrs === 'string') {\n      attrs = AttrList.parseAttrList(attrs);\n    }\n    Object.assign(this, attrs);\n  }\n\n  get clientAttrs(): string[] {\n    return Object.keys(this).filter((attr) => attr.substring(0, 2) === 'X-');\n  }\n\n  decimalInteger(attrName: string): number {\n    const intValue = parseInt(this[attrName], 10);\n    if (intValue > Number.MAX_SAFE_INTEGER) {\n      return Infinity;\n    }\n\n    return intValue;\n  }\n\n  hexadecimalInteger(attrName: string) {\n    if (this[attrName]) {\n      let stringValue = (this[attrName] || '0x').slice(2);\n      stringValue = (stringValue.length & 1 ? '0' : '') + stringValue;\n\n      const value = new Uint8Array(stringValue.length / 2);\n      for (let i = 0; i < stringValue.length / 2; i++) {\n        value[i] = parseInt(stringValue.slice(i * 2, i * 2 + 2), 16);\n      }\n\n      return value;\n    } else {\n      return null;\n    }\n  }\n\n  hexadecimalIntegerAsNumber(attrName: string): number {\n    const intValue = parseInt(this[attrName], 16);\n    if (intValue > Number.MAX_SAFE_INTEGER) {\n      return Infinity;\n    }\n\n    return intValue;\n  }\n\n  decimalFloatingPoint(attrName: string): number {\n    return parseFloat(this[attrName]);\n  }\n\n  optionalFloat(attrName: string, defaultValue: number): number {\n    const value = this[attrName];\n    return value ? parseFloat(value) : defaultValue;\n  }\n\n  enumeratedString(attrName: string): string | undefined {\n    return this[attrName];\n  }\n\n  bool(attrName: string): boolean {\n    return this[attrName] === 'YES';\n  }\n\n  decimalResolution(attrName: string):\n    | {\n        width: number;\n        height: number;\n      }\n    | undefined {\n    const res = DECIMAL_RESOLUTION_REGEX.exec(this[attrName]);\n    if (res === null) {\n      return undefined;\n    }\n\n    return {\n      width: parseInt(res[1], 10),\n      height: parseInt(res[2], 10),\n    };\n  }\n\n  static parseAttrList(input: string): Record<string, any> {\n    let match;\n    const attrs = {};\n    const quote = '\"';\n    ATTR_LIST_REGEX.lastIndex = 0;\n    while ((match = ATTR_LIST_REGEX.exec(input)) !== null) {\n      let value = match[2];\n\n      if (\n        value.indexOf(quote) === 0 &&\n        value.lastIndexOf(quote) === value.length - 1\n      ) {\n        value = value.slice(1, -1);\n      }\n      const name = match[1].trim();\n      attrs[name] = value;\n    }\n    return attrs;\n  }\n}\n","import { AttrList } from '../utils/attr-list';\nimport { logger } from '../utils/logger';\n\n// Avoid exporting const enum so that these values can be inlined\nconst enum DateRangeAttribute {\n  ID = 'ID',\n  CLASS = 'CLASS',\n  START_DATE = 'START-DATE',\n  DURATION = 'DURATION',\n  END_DATE = 'END-DATE',\n  END_ON_NEXT = 'END-ON-NEXT',\n  PLANNED_DURATION = 'PLANNED-DURATION',\n  SCTE35_OUT = 'SCTE35-OUT',\n  SCTE35_IN = 'SCTE35-IN',\n}\n\nexport function isDateRangeCueAttribute(attrName: string): boolean {\n  return (\n    attrName !== DateRangeAttribute.ID &&\n    attrName !== DateRangeAttribute.CLASS &&\n    attrName !== DateRangeAttribute.START_DATE &&\n    attrName !== DateRangeAttribute.DURATION &&\n    attrName !== DateRangeAttribute.END_DATE &&\n    attrName !== DateRangeAttribute.END_ON_NEXT\n  );\n}\n\nexport function isSCTE35Attribute(attrName: string): boolean {\n  return (\n    attrName === DateRangeAttribute.SCTE35_OUT ||\n    attrName === DateRangeAttribute.SCTE35_IN\n  );\n}\n\nexport class DateRange {\n  public attr: AttrList;\n  private _startDate: Date;\n  private _endDate?: Date;\n  private _badValueForSameId?: string;\n\n  constructor(dateRangeAttr: AttrList, dateRangeWithSameId?: DateRange) {\n    if (dateRangeWithSameId) {\n      const previousAttr = dateRangeWithSameId.attr;\n      for (const key in previousAttr) {\n        if (\n          Object.prototype.hasOwnProperty.call(dateRangeAttr, key) &&\n          dateRangeAttr[key] !== previousAttr[key]\n        ) {\n          logger.warn(\n            `DATERANGE tag attribute: \"${key}\" does not match for tags with ID: \"${dateRangeAttr.ID}\"`,\n          );\n          this._badValueForSameId = key;\n          break;\n        }\n      }\n      // Merge DateRange tags with the same ID\n      dateRangeAttr = Object.assign(\n        new AttrList({}),\n        previousAttr,\n        dateRangeAttr,\n      );\n    }\n    this.attr = dateRangeAttr;\n    this._startDate = new Date(dateRangeAttr[DateRangeAttribute.START_DATE]);\n    if (DateRangeAttribute.END_DATE in this.attr) {\n      const endDate = new Date(this.attr[DateRangeAttribute.END_DATE]);\n      if (Number.isFinite(endDate.getTime())) {\n        this._endDate = endDate;\n      }\n    }\n  }\n\n  get id(): string {\n    return this.attr.ID;\n  }\n\n  get class(): string {\n    return this.attr.CLASS;\n  }\n\n  get startDate(): Date {\n    return this._startDate;\n  }\n\n  get endDate(): Date | null {\n    if (this._endDate) {\n      return this._endDate;\n    }\n    const duration = this.duration;\n    if (duration !== null) {\n      return new Date(this._startDate.getTime() + duration * 1000);\n    }\n    return null;\n  }\n\n  get duration(): number | null {\n    if (DateRangeAttribute.DURATION in this.attr) {\n      const duration = this.attr.decimalFloatingPoint(\n        DateRangeAttribute.DURATION,\n      );\n      if (Number.isFinite(duration)) {\n        return duration;\n      }\n    } else if (this._endDate) {\n      return (this._endDate.getTime() - this._startDate.getTime()) / 1000;\n    }\n    return null;\n  }\n\n  get plannedDuration(): number | null {\n    if (DateRangeAttribute.PLANNED_DURATION in this.attr) {\n      return this.attr.decimalFloatingPoint(\n        DateRangeAttribute.PLANNED_DURATION,\n      );\n    }\n    return null;\n  }\n\n  get endOnNext(): boolean {\n    return this.attr.bool(DateRangeAttribute.END_ON_NEXT);\n  }\n\n  get isValid(): boolean {\n    return (\n      !!this.id &&\n      !this._badValueForSameId &&\n      Number.isFinite(this.startDate.getTime()) &&\n      (this.duration === null || this.duration >= 0) &&\n      (!this.endOnNext || !!this.class)\n    );\n  }\n}\n","import type {\n  HlsPerformanceTiming,\n  HlsProgressivePerformanceTiming,\n  LoaderStats,\n} from '../types/loader';\n\nexport class LoadStats implements LoaderStats {\n  aborted: boolean = false;\n  loaded: number = 0;\n  retry: number = 0;\n  total: number = 0;\n  chunkCount: number = 0;\n  bwEstimate: number = 0;\n  loading: HlsProgressivePerformanceTiming = { start: 0, first: 0, end: 0 };\n  parsing: HlsPerformanceTiming = { start: 0, end: 0 };\n  buffering: HlsProgressivePerformanceTiming = { start: 0, first: 0, end: 0 };\n}\n","import { buildAbsoluteURL } from 'url-toolkit';\nimport { LevelKey } from './level-key';\nimport { LoadStats } from './load-stats';\nimport { AttrList } from '../utils/attr-list';\nimport type {\n  FragmentLoaderContext,\n  KeyLoaderContext,\n  Loader,\n  PlaylistLevelType,\n} from '../types/loader';\nimport type { KeySystemFormats } from '../utils/mediakeys-helper';\n\nexport const enum ElementaryStreamTypes {\n  AUDIO = 'audio',\n  VIDEO = 'video',\n  AUDIOVIDEO = 'audiovideo',\n}\n\nexport interface ElementaryStreamInfo {\n  startPTS: number;\n  endPTS: number;\n  startDTS: number;\n  endDTS: number;\n  partial?: boolean;\n}\n\nexport type ElementaryStreams = Record<\n  ElementaryStreamTypes,\n  ElementaryStreamInfo | null\n>;\n\nexport class BaseSegment {\n  private _byteRange: [number, number] | null = null;\n  private _url: string | null = null;\n\n  // baseurl is the URL to the playlist\n  public readonly baseurl: string;\n  // relurl is the portion of the URL that comes from inside the playlist.\n  public relurl?: string;\n  // Holds the types of data this fragment supports\n  public elementaryStreams: ElementaryStreams = {\n    [ElementaryStreamTypes.AUDIO]: null,\n    [ElementaryStreamTypes.VIDEO]: null,\n    [ElementaryStreamTypes.AUDIOVIDEO]: null,\n  };\n\n  constructor(baseurl: string) {\n    this.baseurl = baseurl;\n  }\n\n  // setByteRange converts a EXT-X-BYTERANGE attribute into a two element array\n  setByteRange(value: string, previous?: BaseSegment) {\n    const params = value.split('@', 2);\n    let start: number;\n    if (params.length === 1) {\n      start = previous?.byteRangeEndOffset || 0;\n    } else {\n      start = parseInt(params[1]);\n    }\n    this._byteRange = [start, parseInt(params[0]) + start];\n  }\n\n  get byteRange(): [number, number] | [] {\n    if (!this._byteRange) {\n      return [];\n    }\n\n    return this._byteRange;\n  }\n\n  get byteRangeStartOffset(): number | undefined {\n    return this.byteRange[0];\n  }\n\n  get byteRangeEndOffset(): number | undefined {\n    return this.byteRange[1];\n  }\n\n  get url(): string {\n    if (!this._url && this.baseurl && this.relurl) {\n      this._url = buildAbsoluteURL(this.baseurl, this.relurl, {\n        alwaysNormalize: true,\n      });\n    }\n    return this._url || '';\n  }\n\n  set url(value: string) {\n    this._url = value;\n  }\n}\n\n/**\n * Object representing parsed data from an HLS Segment. Found in {@link hls.js#LevelDetails.fragments}.\n */\nexport class Fragment extends BaseSegment {\n  private _decryptdata: LevelKey | null = null;\n\n  public rawProgramDateTime: string | null = null;\n  public programDateTime: number | null = null;\n  public tagList: Array<string[]> = [];\n\n  // EXTINF has to be present for a m3u8 to be considered valid\n  public duration: number = 0;\n  // sn notates the sequence number for a segment, and if set to a string can be 'initSegment'\n  public sn: number | 'initSegment' = 0;\n  // levelkeys are the EXT-X-KEY tags that apply to this segment for decryption\n  // core difference from the private field _decryptdata is the lack of the initialized IV\n  // _decryptdata will set the IV for this segment based on the segment number in the fragment\n  public levelkeys?: { [key: string]: LevelKey };\n  // A string representing the fragment type\n  public readonly type: PlaylistLevelType;\n  // A reference to the loader. Set while the fragment is loading, and removed afterwards. Used to abort fragment loading\n  public loader: Loader<FragmentLoaderContext> | null = null;\n  // A reference to the key loader. Set while the key is loading, and removed afterwards. Used to abort key loading\n  public keyLoader: Loader<KeyLoaderContext> | null = null;\n  // The level/track index to which the fragment belongs\n  public level: number = -1;\n  // The continuity counter of the fragment\n  public cc: number = 0;\n  // The starting Presentation Time Stamp (PTS) of the fragment. Set after transmux complete.\n  public startPTS?: number;\n  // The ending Presentation Time Stamp (PTS) of the fragment. Set after transmux complete.\n  public endPTS?: number;\n  // The starting Decode Time Stamp (DTS) of the fragment. Set after transmux complete.\n  public startDTS!: number;\n  // The ending Decode Time Stamp (DTS) of the fragment. Set after transmux complete.\n  public endDTS!: number;\n  // The start time of the fragment, as listed in the manifest. Updated after transmux complete.\n  public start: number = 0;\n  // Set by `updateFragPTSDTS` in level-helper\n  public deltaPTS?: number;\n  // The maximum starting Presentation Time Stamp (audio/video PTS) of the fragment. Set after transmux complete.\n  public maxStartPTS?: number;\n  // The minimum ending Presentation Time Stamp (audio/video PTS) of the fragment. Set after transmux complete.\n  public minEndPTS?: number;\n  // Load/parse timing information\n  public stats: LoadStats = new LoadStats();\n  public urlId: number = 0;\n  public data?: Uint8Array;\n  // A flag indicating whether the segment was downloaded in order to test bitrate, and was not buffered\n  public bitrateTest: boolean = false;\n  // #EXTINF  segment title\n  public title: string | null = null;\n  // The Media Initialization Section for this segment\n  public initSegment: Fragment | null = null;\n  // Fragment is the last fragment in the media playlist\n  public endList?: boolean;\n  // Fragment is marked by an EXT-X-GAP tag indicating that it does not contain media data and should not be loaded\n  public gap?: boolean;\n\n  constructor(type: PlaylistLevelType, baseurl: string) {\n    super(baseurl);\n    this.type = type;\n  }\n\n  get decryptdata(): LevelKey | null {\n    const { levelke