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- "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);
- }
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