index.js
1 KB
import toDate from '../toDate/index.js';
import endOfDay from '../endOfDay/index.js';
import endOfMonth from '../endOfMonth/index.js';
import requiredArgs from '../_lib/requiredArgs/index.js';
/**
* @name isLastDayOfMonth
* @category Month Helpers
* @summary Is the given date the last day of a month?
*
* @description
* Is the given date the last day of a month?
*
* ### 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 check
* @returns {Boolean} the date is the last day of a month
* @throws {TypeError} 1 argument required
*
* @example
* // Is 28 February 2014 the last day of a month?
* var result = isLastDayOfMonth(new Date(2014, 1, 28))
* //=> true
*/
export default function isLastDayOfMonth(dirtyDate) {
requiredArgs(1, arguments);
var date = toDate(dirtyDate);
return endOfDay(date).getTime() === endOfMonth(date).getTime();
}