timepiece/node_modules/date-fns/isSameISOWeekYear.mjs

34 lines
1.2 KiB
JavaScript
Raw Normal View History

2024-05-14 14:54:12 +00:00
import { startOfISOWeekYear } from "./startOfISOWeekYear.mjs";
/**
* @name isSameISOWeekYear
* @category ISO Week-Numbering Year Helpers
* @summary Are the given dates in the same ISO week-numbering year?
*
* @description
* Are the given dates in the same ISO week-numbering year?
*
* 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 dateLeft - The first date to check
* @param dateRight - The second date to check
*
* @returns The dates are in the same ISO week-numbering year
*
* @example
* // Are 29 December 2003 and 2 January 2005 in the same ISO week-numbering year?
* const result = isSameISOWeekYear(new Date(2003, 11, 29), new Date(2005, 0, 2))
* //=> true
*/
export function isSameISOWeekYear(dateLeft, dateRight) {
const dateLeftStartOfYear = startOfISOWeekYear(dateLeft);
const dateRightStartOfYear = startOfISOWeekYear(dateRight);
return +dateLeftStartOfYear === +dateRightStartOfYear;
}
// Fallback for modularized imports:
export default isSameISOWeekYear;