Current File : /var/www/html/node_modules/date-fns/esm/isLeapYear/index.js
import toDate from "../toDate/index.js";
import requiredArgs from "../_lib/requiredArgs/index.js";
/**
* @name isLeapYear
* @category Year Helpers
* @summary Is the given date in the leap year?
*
* @description
* Is the given date in the leap year?
*
* ### 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} date - the date to check
* @returns {Boolean} the date is in the leap year
* @throws {TypeError} 1 argument required
*
* @example
* // Is 1 September 2012 in the leap year?
* var result = isLeapYear(new Date(2012, 8, 1))
* //=> true
*/
export default function isLeapYear(dirtyDate) {
requiredArgs(1, arguments);
var date = toDate(dirtyDate);
var year = date.getFullYear();
return year % 400 === 0 || year % 4 === 0 && year % 100 !== 0;
}
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