code: function (time, n) {
      time = Number(time) || 0;
      n = n || 2;
  
      if (n === 2) {
        time = time < 10 ? time + '0' : time;
      } else if (n === 3) {
        time = time < 10
          ? time + '00'
          : time < 100
            ? time + '0'
            : time;
      }
  
      return String(time);
    }
docs: Format a time number.
  @private
  @param  {Number} time
  @param  {Number} n - Number of digits to show. Default 2.
  @return {String}