export declare type HolidayType = {
    name: string;
    date: Date;
    day: number;
    month: number;
    year: number;
    isPublicHoliday: boolean;
};
export declare function addDays(dirtyDate: Date, amount: number): Date;
export declare function addWeeks(date: Date, amount: number): Date;
export declare function addYears(dirtyDate: Date, amount: number): Date;
export declare const getHolidayJSON: (name: string, date: Date, isPublicHoliday?: boolean) => HolidayType;
export declare const fixedDate: (year: number, month: number, day: number) => Date;
export declare const firstOfWeekdayAfterDate: (weekday: number, date: Date) => Date;