Current File : /var/www/html/node_modules/date-fns/esm/setDay/index.js
import addDays from "../addDays/index.js";
import toDate from "../toDate/index.js";
import toInteger from "../_lib/toInteger/index.js";
import requiredArgs from "../_lib/requiredArgs/index.js";
/**
* @name setDay
* @category Weekday Helpers
* @summary Set the day of the week to the given date.
*
* @description
* Set the day of the week to the given date.
*
* ### 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} day - the day of 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)
* @returns {Date} the new date with the day of the week set
* @throws {TypeError} 2 arguments required
* @throws {RangeError} `options.weekStartsOn` must be between 0 and 6
*
* @example
* // Set week day to Sunday, with the default weekStartsOn of Sunday:
* var result = setDay(new Date(2014, 8, 1), 0)
* //=> Sun Aug 31 2014 00:00:00
*
* @example
* // Set week day to Sunday, with a weekStartsOn of Monday:
* var result = setDay(new Date(2014, 8, 1), 0, { weekStartsOn: 1 })
* //=> Sun Sep 07 2014 00:00:00
*/
export default function setDay(dirtyDate, dirtyDay, dirtyOptions) {
requiredArgs(2, arguments);
var options = dirtyOptions || {};
var locale = options.locale;
var localeWeekStartsOn = locale && locale.options && locale.options.weekStartsOn;
var defaultWeekStartsOn = localeWeekStartsOn == null ? 0 : toInteger(localeWeekStartsOn);
var weekStartsOn = options.weekStartsOn == null ? defaultWeekStartsOn : toInteger(options.weekStartsOn); // Test if weekStartsOn is between 0 and 6 _and_ is not NaN
if (!(weekStartsOn >= 0 && weekStartsOn <= 6)) {
throw new RangeError('weekStartsOn must be between 0 and 6 inclusively');
}
var date = toDate(dirtyDate);
var day = toInteger(dirtyDay);
var currentDay = date.getDay();
var remainder = day % 7;
var dayIndex = (remainder + 7) % 7;
var delta = 7 - weekStartsOn;
var diff = day < 0 || day > 6 ? day - (currentDay + delta) % 7 : (dayIndex + delta) % 7 - (currentDay + delta) % 7;
return addDays(date, diff);
}
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