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Api/node_modules/date-fns/setISOWeekYear.mjs
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astafievK
source code
21 июн 2024, 21:02
21 июн 2024, 21:02
37a1d03
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import { constructFrom } from "./constructFrom.mjs"; import { differenceInCalendarDays } from "./differenceInCalendarDays.mjs"; import { startOfISOWeekYear } from "./startOfISOWeekYear.mjs"; import { toDate } from "./toDate.mjs"; /** * @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 * * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc). * * @param date - The date to be changed * @param weekYear - The ISO week-numbering year of the new date * * @returns The new date with the ISO week-numbering year set * * @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 */ export function setISOWeekYear(date, weekYear) { let _date = toDate(date); const diff = differenceInCalendarDays(_date, startOfISOWeekYear(_date)); const fourthOfJanuary = constructFrom(date, 0); fourthOfJanuary.setFullYear(weekYear, 0, 4); fourthOfJanuary.setHours(0, 0, 0, 0); _date = startOfISOWeekYear(fourthOfJanuary); _date.setDate(_date.getDate() + diff); return _date; } // Fallback for modularized imports: export default setISOWeekYear;