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- "use strict";
- var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = setWeek;
- var _index = _interopRequireDefault(require("../getWeek/index.js"));
- var _index2 = _interopRequireDefault(require("../toDate/index.js"));
- var _index3 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
- var _index4 = _interopRequireDefault(require("../_lib/toInteger/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
- *
- * @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:
- * const 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:
- * const result = setWeek(new Date(2005, 0, 2), 1, {
- * weekStartsOn: 1,
- * firstWeekContainsDate: 4
- * })
- * //=> Sun Jan 4 2004 00:00:00
- */
- function setWeek(dirtyDate, dirtyWeek, options) {
- (0, _index3.default)(2, arguments);
- var date = (0, _index2.default)(dirtyDate);
- var week = (0, _index4.default)(dirtyWeek);
- var diff = (0, _index.default)(date, options) - week;
- date.setDate(date.getDate() - diff * 7);
- return date;
- }
- module.exports = exports.default;
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