function differenceInCalendarDays(dirtyDateLeft, dirtyDateRight) {
  __WEBPACK_IMPORTED_MODULE_2__lib_requiredArgs_index_js__["a" /* default */](2, arguments);
  var startOfDayLeft = __WEBPACK_IMPORTED_MODULE_1__startOfDay_index_js__["a" /* default */](dirtyDateLeft);
  var startOfDayRight = __WEBPACK_IMPORTED_MODULE_1__startOfDay_index_js__["a" /* default */](dirtyDateRight);
  var timestampLeft = startOfDayLeft.getTime() - __WEBPACK_IMPORTED_MODULE_0__lib_getTimezoneOffsetInMilliseconds_index_js__["a" /* default */](startOfDayLeft);
  var timestampRight = startOfDayRight.getTime() - __WEBPACK_IMPORTED_MODULE_0__lib_getTimezoneOffsetInMilliseconds_index_js__["a" /* default */](startOfDayRight); // Round the number of days to the nearest integer
  // because the number of milliseconds in a day is not constant
  // (e.g. it's different in the day of the daylight saving time clock shift)

  return Math.round((timestampLeft - timestampRight) / MILLISECONDS_IN_DAY);
}
@name differenceInCalendarDays
@category Day Helpers
@summary Get the number of calendar days between the given dates.

@description
Get the number of calendar days between the given dates. This means that the times are removed
from the dates and then the difference in days is calculated.

### 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} dateLeft - the later date
@param {Date|Number} dateRight - the earlier date
@returns {Number} the number of calendar days
@throws {TypeError} 2 arguments required

@example
// How many calendar days are between
// 2 July 2011 23:00:00 and 2 July 2012 00:00:00?
var result = differenceInCalendarDays(
  new Date(2012, 6, 2, 0, 0),
  new Date(2011, 6, 2, 23, 0)
)
//=> 366
// How many calendar days are between
// 2 July 2011 23:59:00 and 3 July 2011 00:01:00?
var result = differenceInCalendarDays(
  new Date(2011, 6, 3, 0, 1),
  new Date(2011, 6, 2, 23, 59)
)
//=> 1