timepiece/node_modules/date-fns/isLeapYear.js

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2024-05-14 14:54:12 +00:00
"use strict";
exports.isLeapYear = isLeapYear;
var _index = require("./toDate.js");
/**
* @name isLeapYear
* @category Year Helpers
* @summary Is the given date in the leap year?
*
* @description
* Is the given date in the leap year?
*
* @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 check
*
* @returns The date is in the leap year
*
* @example
* // Is 1 September 2012 in the leap year?
* const result = isLeapYear(new Date(2012, 8, 1))
* //=> true
*/
function isLeapYear(date) {
const _date = (0, _index.toDate)(date);
const year = _date.getFullYear();
return year % 400 === 0 || (year % 4 === 0 && year % 100 !== 0);
}