platform/video.videojs/dist/video.es.js
function SubtitlesButton(player, options, ready) {
    classCallCheck(this, SubtitlesButton);
    return possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready));
  }
function SubtitlesButton(player, options, ready) {
    classCallCheck(this, SubtitlesButton);
    return possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready));
  }
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.

@param {Component~ReadyCallback} [ready]
The function to call when this component is ready.