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- "use strict";
- var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = setISOWeekYear;
- var _index = _interopRequireDefault(require("../_lib/toInteger/index.js"));
- var _index2 = _interopRequireDefault(require("../toDate/index.js"));
- var _index3 = _interopRequireDefault(require("../startOfISOWeekYear/index.js"));
- var _index4 = _interopRequireDefault(require("../differenceInCalendarDays/index.js"));
- var _index5 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
- /**
- * @name setISOWeekYear
- * @category ISO Week-Numbering Year Helpers
- * @summary Set the ISO week-numbering year to the given date.
- *
- * @description
- * Set the ISO week-numbering year to the given date,
- * saving the week number and the weekday number.
- *
- * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
- *
- * @param {Date|Number} date - the date to be changed
- * @param {Number} isoWeekYear - the ISO week-numbering year of the new date
- * @returns {Date} the new date with the ISO week-numbering year set
- * @throws {TypeError} 2 arguments required
- *
- * @example
- * // Set ISO week-numbering year 2007 to 29 December 2008:
- * const result = setISOWeekYear(new Date(2008, 11, 29), 2007)
- * //=> Mon Jan 01 2007 00:00:00
- */
- function setISOWeekYear(dirtyDate, dirtyISOWeekYear) {
- (0, _index5.default)(2, arguments);
- var date = (0, _index2.default)(dirtyDate);
- var isoWeekYear = (0, _index.default)(dirtyISOWeekYear);
- var diff = (0, _index4.default)(date, (0, _index3.default)(date));
- var fourthOfJanuary = new Date(0);
- fourthOfJanuary.setFullYear(isoWeekYear, 0, 4);
- fourthOfJanuary.setHours(0, 0, 0, 0);
- date = (0, _index3.default)(fourthOfJanuary);
- date.setDate(date.getDate() + diff);
- return date;
- }
- module.exports = exports.default;
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