You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
2.4 KiB
57 lines
2.4 KiB
3 years ago
|
import getWeek from '../getWeek/index.js';
|
||
|
|
import toDate from '../toDate/index.js';
|
||
|
|
import toInteger from '../_lib/toInteger/index.js';
|
||
|
|
import requiredArgs from '../_lib/requiredArgs/index.js';
|
||
|
|
/**
|
||
|
|
* @name setWeek
|
||
|
|
* @category Week Helpers
|
||
|
|
* @summary Set the local week to the given date.
|
||
|
|
*
|
||
|
|
* @description
|
||
|
|
* Set the local week to the given date, saving the weekday number.
|
||
|
|
* The exact calculation depends on the values of
|
||
|
|
* `options.weekStartsOn` (which is the index of the first day of the week)
|
||
|
|
* and `options.firstWeekContainsDate` (which is the day of January, which is always in
|
||
|
|
* the first week of the week-numbering year)
|
||
|
|
*
|
||
|
|
* Week numbering: https://en.wikipedia.org/wiki/Week#Week_numbering
|
||
|
|
*
|
||
|
|
* ### 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} week - the week of the new date
|
||
|
|
* @param {Object} [options] - an object with options.
|
||
|
|
* @param {Locale} [options.locale=defaultLocale] - the locale object. See [Locale]{@link https://date-fns.org/docs/Locale}
|
||
|
|
* @param {0|1|2|3|4|5|6} [options.weekStartsOn=0] - the index of the first day of the week (0 - Sunday)
|
||
|
|
* @param {1|2|3|4|5|6|7} [options.firstWeekContainsDate=1] - the day of January, which is always in the first week of the year
|
||
|
|
* @returns {Date} the new date with the local week set
|
||
|
|
* @throws {TypeError} 2 arguments required
|
||
|
|
* @throws {RangeError} `options.weekStartsOn` must be between 0 and 6
|
||
|
|
* @throws {RangeError} `options.firstWeekContainsDate` must be between 1 and 7
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* // Set the 1st week to 2 January 2005 with default options:
|
||
|
|
* var result = setWeek(new Date(2005, 0, 2), 1)
|
||
|
|
* //=> Sun Dec 26 2004 00:00:00
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* // Set the 1st week to 2 January 2005,
|
||
|
|
* // if Monday is the first day of the week,
|
||
|
|
* // and the first week of the year always contains 4 January:
|
||
|
|
* var result = setWeek(new Date(2005, 0, 2), 1, {
|
||
|
|
* weekStartsOn: 1,
|
||
|
|
* firstWeekContainsDate: 4
|
||
|
|
* })
|
||
|
|
* //=> Sun Jan 4 2004 00:00:00
|
||
|
|
*/
|
||
|
|
|
||
|
|
export default function setWeek(dirtyDate, dirtyWeek, dirtyOptions) {
|
||
|
|
requiredArgs(2, arguments);
|
||
|
|
var date = toDate(dirtyDate);
|
||
|
|
var week = toInteger(dirtyWeek);
|
||
|
|
var diff = getWeek(date, dirtyOptions) - week;
|
||
|
|
date.setDate(date.getDate() - diff * 7);
|
||
|
|
return date;
|
||
|
|
}
|