code: function checkPlaying(event) {
  	    var _this3 = this;
  
  	    // Class hooks
  	    toggleClass(this.elements.container, this.config.classNames.playing, this.playing);
  	    toggleClass(this.elements.container, this.config.classNames.paused, this.paused);
  	    toggleClass(this.elements.container, this.config.classNames.stopped, this.stopped); // Set state
  
  	    Array.from(this.elements.buttons.play || []).forEach(function (target) {
  	      target.pressed = _this3.playing;
  	    }); // Only update controls on non timeupdate events
  
  	    if (is$1.event(event) && event.type === 'timeupdate') {
  	      return;
  	    } // Toggle controls
  
  
  	    ui.toggleControls.call(this);
  	  }
docs: Check playing state