function addMonths(dirtyDate, dirtyAmount) {
  __WEBPACK_IMPORTED_MODULE_2__lib_requiredArgs_index_js__["a" /* default */](2, arguments);
  var date = __WEBPACK_IMPORTED_MODULE_1__toDate_index_js__["a" /* default */](dirtyDate);
  var amount = __WEBPACK_IMPORTED_MODULE_0__lib_toInteger_index_js__["a" /* default */](dirtyAmount);

  if (isNaN(amount)) {
    return new Date(NaN);
  }

  if (!amount) {
    // If 0 months, no-op to avoid changing times in the hour before end of DST
    return date;
  }

  var dayOfMonth = date.getDate(); // The JS Date object supports date math by accepting out-of-bounds values for
  // month, day, etc. For example, new Date(2020, 1, 0) returns 31 Dec 2019 and
  // new Date(2020, 13, 1) returns 1 Feb 2021.  This is *almost* the behavior we
  // want except that dates will wrap around the end of a month, meaning that
  // new Date(2020, 13, 31) will return 3 Mar 2021 not 28 Feb 2021 as desired. So
  // we'll default to the end of the desired month by adding 1 to the desired
  // month and using a date of 0 to back up one day to the end of the desired
  // month.

  var endOfDesiredMonth = new Date(date.getTime());
  endOfDesiredMonth.setMonth(date.getMonth() + amount + 1, 0);
  var daysInMonth = endOfDesiredMonth.getDate();

  if (dayOfMonth >= daysInMonth) {
    // If we're already at the end of the month, then this is the correct date
    // and we're done.
    return endOfDesiredMonth;
  } else {
    // Otherwise, we now know that setting the original day-of-month value won't
    // cause an overflow, so set the desired day-of-month. Note that we can't
    // just set the date of `endOfDesiredMonth` because that object may have had
    // its time changed in the unusual case where where a DST transition was on
    // the last day of the month and its local time was in the hour skipped or
    // repeated next to a DST transition.  So we use `date` instead which is
    // guaranteed to still have the original time.
    date.setFullYear(endOfDesiredMonth.getFullYear(), endOfDesiredMonth.getMonth(), dayOfMonth);
    return date;
  }
}
@name addMonths
@category Month Helpers
@summary Add the specified number of months to the given date.

@description
Add the specified number of months to the given date.

### v2.0.0 breaking changes:

- [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).

@param {Date|Number} date - the date to be changed
@param {Number} amount - the amount of months to be added. Positive decimals will be rounded using `Math.floor`, decimals less than zero will be rounded using `Math.ceil`.
@returns {Date} the new date with the months added
@throws {TypeError} 2 arguments required

@example
// Add 5 months to 1 September 2014:
var result = addMonths(new Date(2014, 8, 1), 5)
//=> Sun Feb 01 2015 00:00:00