import { addISOWeekYears } from "./addISOWeekYears.mjs"; /** * @name subISOWeekYears * @category ISO Week-Numbering Year Helpers * @summary Subtract the specified number of ISO week-numbering years from the given date. * * @description * Subtract the specified number of ISO week-numbering years from the given date. * * 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 amount - The amount of ISO week-numbering years to be subtracted. * * @returns The new date with the ISO week-numbering years subtracted * * @example * // Subtract 5 ISO week-numbering years from 1 September 2014: * const result = subISOWeekYears(new Date(2014, 8, 1), 5) * //=> Mon Aug 31 2009 00:00:00 */ export function subISOWeekYears(date, amount) { return addISOWeekYears(date, -amount); } // Fallback for modularized imports: export default subISOWeekYears;