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/**
* @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
*/
export declare function isLeapYear<DateType extends Date>(
date: DateType | number | string,
): boolean;