export declare const calculateNewDayOfMonth: (inputDate: string | Date, newDayOfMonth: number) => Date;
export declare const generateYears: (inputDate: string | Date) => number[];
export declare const changeYearInDate: (inputDate: string | Date, n: number) => Date;
export declare const addMonths: (inputDate: string | Date, n: number) => Date;
export declare const getDaysInMonth: (inputDate: string | Date) => number;
export declare const getFirstDayOfMonth: (inputDate: string | Date) => number;
export declare const getDateForInput: (inputDate: string | Date) => string;
export declare const generateDaysArray: (inputDate: string | Date) => {
    day: number;
    dayValue: string;
    cssClass: string;
}[];
export declare const isYYYYMMDD: (inputDate: string) => boolean;