bc518174
 王天杨
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import { toDate } from "./toDate.mjs";
/**
* @name differenceInCalendarMonths
* @category Month Helpers
* @summary Get the number of calendar months between the given dates.
*
* @description
* Get the number of calendar months between the given dates.
*
* @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 months
*
* @example
* // How many calendar months are between 31 January 2014 and 1 September 2014?
* const result = differenceInCalendarMonths(
* new Date(2014, 8, 1),
* new Date(2014, 0, 31)
* )
* //=> 8
*/
export function differenceInCalendarMonths(dateLeft, dateRight) {
const _dateLeft = toDate(dateLeft);
const _dateRight = toDate(dateRight);
const yearDiff = _dateLeft.getFullYear() - _dateRight.getFullYear();
const monthDiff = _dateLeft.getMonth() - _dateRight.getMonth();
return yearDiff * 12 + monthDiff;
}
// Fallback for modularized imports:
export default differenceInCalendarMonths;
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