hugoWebsite/node_modules/date-fns/endOfISOWeekYear/index.js

48 lines
1.6 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = endOfISOWeekYear;
var _index = _interopRequireDefault(require("../getISOWeekYear/index.js"));
var _index2 = _interopRequireDefault(require("../startOfISOWeek/index.js"));
var _index3 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* @name endOfISOWeekYear
* @category ISO Week-Numbering Year Helpers
* @summary Return the end of an ISO week-numbering year for the given date.
*
* @description
* Return the end of an ISO week-numbering year,
* which always starts 3 days before the year's first Thursday.
* The result will be in the local timezone.
*
* ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
*
* @param {Date|Number} date - the original date
* @returns {Date} the end of an ISO week-numbering year
* @throws {TypeError} 1 argument required
*
* @example
* // The end of an ISO week-numbering year for 2 July 2005:
* const result = endOfISOWeekYear(new Date(2005, 6, 2))
* //=> Sun Jan 01 2006 23:59:59.999
*/
function endOfISOWeekYear(dirtyDate) {
(0, _index3.default)(1, arguments);
var year = (0, _index.default)(dirtyDate);
var fourthOfJanuaryOfNextYear = new Date(0);
fourthOfJanuaryOfNextYear.setFullYear(year + 1, 0, 4);
fourthOfJanuaryOfNextYear.setHours(0, 0, 0, 0);
var date = (0, _index2.default)(fourthOfJanuaryOfNextYear);
date.setMilliseconds(date.getMilliseconds() - 1);
return date;
}
module.exports = exports.default;