Missing SourceBuffer.textTrack in lib.dom.d.ts #21256
Description
Using TypeScript Version 2.6.1
Using Visual Studio Code Version 1.19.2 for MacOS
SourceBuffer has a property called textTrack which returns TextTrackList. TextTrackList is properly defined and is referenced in MediaSource, but is missing from SourceBuffer.
See https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/textTracks
Therefore, textTrack needs to be added to the signature as follows.
interface SourceBuffer extends EventTarget {
appendWindowEnd: number;
appendWindowStart: number;
readonly audioTracks: AudioTrackList;
readonly buffered: TimeRanges;
mode: AppendMode;
timestampOffset: number;
readonly updating: boolean;
readonly videoTracks: VideoTrackList;
readonly textTracks: TextTrackList;
abort(): void;
appendBuffer(data: ArrayBuffer | ArrayBufferView): void;
appendStream(stream: MSStream, maxSize?: number): void;
remove(start: number, end: number): void;
}