react-native-theoplayer/lib/module/api/track/Track.js

A THEOplayer video component for react-native.

"use strict";

/**
 * Represents a track of a media resource.
 *
 * @remarks
 * <br/> - A specific track type (e.g. {@link TextTrack}) will always be used.
 *
 * @category Media and Text Tracks
 * @public
 */

/**
 * Checks whether a track list contains a given track.
 *
 * @category Media and Text Tracks
 * @internal
 */
export function hasTrack(trackList, track) {
  return !!(trackList && track && trackList.find(t => t.uid === track.uid));
}

/**
 * Removes a track from a track list.
 *
 * @category Media and Text Tracks
 * @internal
 */
export function removeTrack(trackList, track) {
  return trackList && track ? trackList.filter(t => t.uid !== track.uid) : trackList;
}

/**
 * Adds a track to a track list.
 *
 * @category Media and Text Tracks
 * @internal
 */
export function addTrack(trackList, track) {
  return trackList && track && !hasTrack(trackList, track) ? sortTracks([...trackList, track]) : trackList;
}

/**
 * Sort a track list based on the track's uids, which is how they are listed in the manifest.
 *
 * @category Media and Text Tracks
 * @internal
 */
export function sortTracks(trackList) {
  return trackList?.sort((t1, t2) => t1.uid - t2.uid) || [];
}
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