41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
"use strict";
|
|
exports.setMonth = setMonth;
|
|
var _index = require("./constructFrom.js");
|
|
var _index2 = require("./getDaysInMonth.js");
|
|
var _index3 = require("./toDate.js");
|
|
|
|
/**
|
|
* @name setMonth
|
|
* @category Month Helpers
|
|
* @summary Set the month to the given date.
|
|
*
|
|
* @description
|
|
* Set the month to the given date.
|
|
*
|
|
* @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
|
|
*
|
|
* @param date - The date to be changed
|
|
* @param month - The month index to set (0-11)
|
|
*
|
|
* @returns The new date with the month set
|
|
*
|
|
* @example
|
|
* // Set February to 1 September 2014:
|
|
* const result = setMonth(new Date(2014, 8, 1), 1)
|
|
* //=> Sat Feb 01 2014 00:00:00
|
|
*/
|
|
function setMonth(date, month) {
|
|
const _date = (0, _index3.toDate)(date);
|
|
const year = _date.getFullYear();
|
|
const day = _date.getDate();
|
|
|
|
const dateWithDesiredMonth = (0, _index.constructFrom)(date, 0);
|
|
dateWithDesiredMonth.setFullYear(year, month, 15);
|
|
dateWithDesiredMonth.setHours(0, 0, 0, 0);
|
|
const daysInMonth = (0, _index2.getDaysInMonth)(dateWithDesiredMonth);
|
|
// Set the last day of the new month
|
|
// if the original date was the last day of the longer month
|
|
_date.setMonth(month, Math.min(day, daysInMonth));
|
|
return _date;
|
|
}
|