declare global {
    interface Date {
        /**
         * @name isWorkingDay
         * @category Working Days
         * @summary Returns true if the date is a working day.
         *
         * @description
         * Returns true if the date is a working day.
         *
         * @returns {boolean}
         *
         * @example
         * ```ts
         * new Date(2022, 5, 6).isWorkingDay() // true, Monday
         * new Date(2022, 5, 10).isWorkingDay() // true, Friday
         * new Date(2022, 5, 11).isWorkingDay() // false, Saturday
         * new Date(2022, 5, 12).isWorkingDay() // false, Sunday
         * ```
         */
        isWorkingDay(): boolean;
        /**
         * @name isWeekend
         * @category Working Days
         * @summary Returns true if the date is weekend.
         *
         * @description
         * Returns true if the date is weekend.
         *
         * @returns {boolean}
         *
         * @example
         * ```ts
         * new Date(2022, 5, 6).isWeekend() // false, Monday
         * new Date(2022, 5, 10).isWeekend() // false, Friday
         * new Date(2022, 5, 11).isWeekend() // true, Saturday
         * new Date(2022, 5, 12).isWeekend() // true, Sunday
         * ```
         */
        isWeekend(): boolean;
        /**
         * @name addWorkingDays
         * @category Working Days
         * @summary Add the specified number of business days (mon - fri) to the date.
         *
         * @description
         * Add the specified number of business days (mon - fri) to the date, ignoring weekends.
         *
         * @param {number} days - the value of business days to be added. Positive decimals will be rounded using `Math.floor`, decimals less than zero will be rounded using `Math.ceil`.
         * @returns {Date} the new date with the business days added.
         *
         * @example
         * ```ts
         * new Date(2022, 5, 6).addWorkingDays(10) // => "Mon Jun 20 2022 00:00:00 GMT+0300 (GMT+03:00)"
         * new Date(2022, 5, 20).addWorkingDays(-10) // => "Mon Jun 06 2022 00:00:00 GMT+0300 (GMT+03:00)"
         * ```
         */
        addWorkingDays(days: number): Date;
        /**
         * @name subtractWorkingDays
         * @category Working Days
         * @summary Subtract the specified number of business days (mon - fri) from the date.
         *
         * @description
         * Subtract the specified number of business days (mon - fri) from the date, ignoring weekends.
         *
         * @param {number} days - the amount of business days to be subtracted. Positive decimals will be rounded using `Math.floor`, decimals less than zero will be rounded using `Math.ceil`.
         * @returns {Date} the new date with the business days subtracted.
         *
         * @example
         * ```ts
         * new Date(2022, 5, 6).subtractWorkingDays(10) // => "Mon May 23 2022 00:00:00 GMT+0300 (GMT+03:00)"
         * new Date(2022, 5, 6).subtractWorkingDays(-10) // => "Mon Jun 20 2022 00:00:00 GMT+0300 (GMT+03:00)"
         * ```
         */
        subtractWorkingDays(days: number): Date;
    }
}
export {};