index.js
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import toDate from '../toDate/index.js';
import requiredArgs from '../_lib/requiredArgs/index.js';
/**
* @name lastDayOfQuarter
* @category Quarter Helpers
* @summary Return the last day of a year quarter for the given date.
*
* @description
* Return the last day of a year quarter for the given date.
* The result will be in the local timezone.
*
* ### 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 original date
* @param {Object} [options] - an object with options.
* @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
* @returns {Date} the last day of a quarter
* @throws {TypeError} 1 argument required
* @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
*
* @example
* // The last day of a quarter for 2 September 2014 11:55:00:
* var result = lastDayOfQuarter(new Date(2014, 8, 2, 11, 55, 0))
* //=> Tue Sep 30 2014 00:00:00
*/
export default function lastDayOfQuarter(dirtyDate) {
requiredArgs(1, arguments);
var date = toDate(dirtyDate);
var currentMonth = date.getMonth();
var month = currentMonth - currentMonth % 3 + 3;
date.setMonth(month, 0);
date.setHours(0, 0, 0, 0);
return date;
}