text: export default class {
    get docRoot() {
      return document.documentElement;
    }
  
    get isFullScreen() {
      return document.webkitFullscreenElement;
    }
  
    fullScreenEnter() {
      return document.documentElement.webkitRequestFullScreen();
    }
  
    fullScreenExit() {
      return document.webkitExitFullscreen();
    }
  
    fullScreenToggle() {
      return this.isFullScreen ? this.fullScreenExit() : this.fullScreenEnter();
    }
  }
  