49 lines
1.6 KiB
JavaScript
49 lines
1.6 KiB
JavaScript
|
"use strict";
|
||
|
|
|
||
|
|
Object.defineProperty(exports, "__esModule", {
|
||
|
|
value: true
|
||
|
|
});
|
||
|
|
exports.default = differenceInCalendarMonths;
|
||
|
|
|
||
|
|
var _index = _interopRequireDefault(require("../toDate/index.js"));
|
||
|
|
|
||
|
|
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @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.
|
||
|
|
*
|
||
|
|
* ### v2.0.0 breaking changes:
|
||
|
|
*
|
||
|
|
* - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
|
||
|
|
*
|
||
|
|
* @param {Date|Number} dateLeft - the later date
|
||
|
|
* @param {Date|Number} dateRight - the earlier date
|
||
|
|
* @returns {Number} the number of calendar months
|
||
|
|
* @throws {TypeError} 2 arguments required
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* // How many calendar months are between 31 January 2014 and 1 September 2014?
|
||
|
|
* var result = differenceInCalendarMonths(
|
||
|
|
* new Date(2014, 8, 1),
|
||
|
|
* new Date(2014, 0, 31)
|
||
|
|
* )
|
||
|
|
* //=> 8
|
||
|
|
*/
|
||
|
|
function differenceInCalendarMonths(dirtyDateLeft, dirtyDateRight) {
|
||
|
|
if (arguments.length < 2) {
|
||
|
|
throw new TypeError('2 arguments required, but only ' + arguments.length + ' present');
|
||
|
|
}
|
||
|
|
|
||
|
|
var dateLeft = (0, _index.default)(dirtyDateLeft);
|
||
|
|
var dateRight = (0, _index.default)(dirtyDateRight);
|
||
|
|
var yearDiff = dateLeft.getFullYear() - dateRight.getFullYear();
|
||
|
|
var monthDiff = dateLeft.getMonth() - dateRight.getMonth();
|
||
|
|
return yearDiff * 12 + monthDiff;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = exports.default;
|