bc518174
 王天杨
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import { getISOWeekYear } from "./getISOWeekYear.mjs";
/**
* @name differenceInCalendarISOWeekYears
* @category ISO Week-Numbering Year Helpers
* @summary Get the number of calendar ISO week-numbering years between the given dates.
*
* @description
* Get the number of calendar ISO week-numbering years between the given dates.
*
* 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 later date
* @param dateRight - The earlier date
*
* @returns The number of calendar ISO week-numbering years
*
* @example
* // How many calendar ISO week-numbering years are 1 January 2010 and 1 January 2012?
* const result = differenceInCalendarISOWeekYears(
* new Date(2012, 0, 1),
* new Date(2010, 0, 1)
* )
* //=> 2
*/
export function differenceInCalendarISOWeekYears(dateLeft, dateRight) {
return getISOWeekYear(dateLeft) - getISOWeekYear(dateRight);
}
// Fallback for modularized imports:
export default differenceInCalendarISOWeekYears;
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