function Timer() {
    _classCallCheck(this, Timer);

    this.mark();
  }
/**
   * Default constructor for timer object
   * Starts the timer
   */
Default constructor for timer object
Starts the timer
Default constructor for timer object Starts the timer
function Timer() {
    _classCallCheck(this, Timer);
    this.mark();
  }
function Timer ( ) { _classCallCheck ( this , Timer ) ; this . mark ( ) ; }
Default constructor for timer object
 Starts the timer
Default constructor for timer object Starts the timer