platform/video.videojs/dist/video.es.js
function MuteToggle(player, options) {
    classCallCheck(this, MuteToggle);

    // hide this control if volume support is missing
    var _this = possibleConstructorReturn(this, _Button.call(this, player, options));

    checkVolumeSupport(_this, player);

    _this.on(player, ['loadstart', 'volumechange'], _this.update);
    return _this;
  }
function MuteToggle(player, options) {
    classCallCheck(this, MuteToggle);

    // hide this control if volume support is missing
    var _this = possibleConstructorReturn(this, _Button.call(this, player, options));

    checkVolumeSupport(_this, player);

    _this.on(player, ['loadstart', 'volumechange'], _this.update);
    return _this;
  }
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.