function getTracks() {
	    var _this2 = this;

	    var update = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
	    // Handle media or textTracks missing or null
	    var tracks = Array.from((this.media || {}).textTracks || []); // For HTML5, use cache instead of current tracks when it exists (if captions.update is false)
	    // Filter out removed tracks and tracks that aren't captions/subtitles (for example metadata)

	    return tracks.filter(function (track) {
	      return !_this2.isHTML5 || update || _this2.captions.meta.has(track);
	    }).filter(function (track) {
	      return ['captions', 'subtitles'].includes(track.kind);
	    });
	  }
function getTracks() {
	    var _this2 = this;

	    var update = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
	    
	    var tracks = Array.from((this.media || {}).textTracks || []); 
	    

	    return tracks.filter(function (track) {
	      return !_this2.isHTML5 || update || _this2.captions.meta.has(track);
	    }).filter(function (track) {
	      return ['captions', 'subtitles'].includes(track.kind);
	    });
	  }
function getTracks ( ) { var _this2 = this ; var update = arguments . length > 0 && arguments [ 0 ] !== undefined ? arguments [ 0 ] : false ; // Handle media or textTracks missing or null var tracks = Array . from ( ( this . media || { } ) . textTracks || [ ] ) ; // For HTML5, use cache instead of current tracks when it exists (if captions.update is false) // Filter out removed tracks and tracks that aren't captions/subtitles (for example metadata) return tracks . filter ( function ( track ) { return ! _this2 . isHTML5 || update || _this2 . captions . meta . has ( track ) ; } ) . filter ( function ( track ) { return [ 'captions' , 'subtitles' ] . includes ( track . kind ) ; } ) ; }
Get current valid caption tracks If update is false it will also ignore tracks without metadata This is used to "freeze" the language options when captions.update is false
Get current valid caption tracks If update is false it will also ignore tracks without metadata This is used to freeze the language options when captions . update is false