Marc Mintel
5397309103
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37 lines
1.2 KiB
Plaintext
37 lines
1.2 KiB
Plaintext
"use strict";
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exports.differenceInCalendarMonths = differenceInCalendarMonths;
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var _index = require("./toDate.js");
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/**
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* @name differenceInCalendarMonths
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* @category Month Helpers
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* @summary Get the number of calendar months between the given dates.
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*
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* @description
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* Get the number of calendar months between the given dates.
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*
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* @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).
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*
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* @param dateLeft - The later date
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* @param dateRight - The earlier date
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*
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* @returns The number of calendar months
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*
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* @example
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* // How many calendar months are between 31 January 2014 and 1 September 2014?
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* const result = differenceInCalendarMonths(
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* new Date(2014, 8, 1),
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* new Date(2014, 0, 31)
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* )
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* //=> 8
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*/
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function differenceInCalendarMonths(dateLeft, dateRight) {
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const _dateLeft = (0, _index.toDate)(dateLeft);
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const _dateRight = (0, _index.toDate)(dateRight);
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const yearDiff = _dateLeft.getFullYear() - _dateRight.getFullYear();
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const monthDiff = _dateLeft.getMonth() - _dateRight.getMonth();
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return yearDiff * 12 + monthDiff;
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}
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