platform/video.videojs/dist/video.es.js
function AudioTrackButton(player) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    classCallCheck(this, AudioTrackButton);

    options.tracks = player.audioTracks();

    return possibleConstructorReturn(this, _TrackButton.call(this, player, options));
  }
function AudioTrackButton(player) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    classCallCheck(this, AudioTrackButton);

    options.tracks = player.audioTracks();

    return possibleConstructorReturn(this, _TrackButton.call(this, player, options));
  }
Creates an instance of this class.

@param {Player} player
The `Player` that this class should be attached to.

@param {Object} [options={}]
The key/value store of player options.