text: define(['../lang/isDate', './isLeapYear'], function (isDate, isLeapYear) {
  
      var DAYS_IN_MONTH = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
  
      /**
       * returns the total amount of days in the month (considering leap years)
       */
      function totalDaysInMonth(fullYear, monthIndex){
          if (isDate(fullYear)) {
              monthIndex = fullYear.getMonth();
          }
  
          if (monthIndex === 1 && isLeapYear(fullYear)) {
              return 29;
          } else {
              return DAYS_IN_MONTH[monthIndex];
          }
      }
  
      return totalDaysInMonth;
  
  });
  