export declare class DateHelper {
    static toDate(date: LikeDate, resetTime?: boolean): Date;
    static addMonths(date: LikeDate, months?: number): Date;
    static addDays(date: LikeDate, days: number): Date;
    static secondsToTimeRepresentation(seconds: number, duration: number): string;
    static getDate(date: LikeDate): number;
    static getYear(date: LikeDate): number;
    static getDiffInDays(date1: LikeDate, date2: LikeDate): number;
    static getMonthName(date: LikeDate, locale: string, short?: boolean): string;
    static getWeekdayName(date: LikeDate, locale: string, short?: boolean): string;
    static getMonthRange(date: LikeDate): MonthRange;
    static daysInMonth(date: LikeDate): number;
    static getDayOfWeek(date: LikeDate): number;
    static getShiftedDate(date: LikeDate, daysShift: number): Date;
    static getDateOnlyString(date: LikeDate): string;
    static formatDateRange(startDate: LikeDate, endDate: LikeDate, locale: string): string;
    static dateRangeDescriptionString(startDate: LikeDate, endDate: LikeDate | null | undefined, locale: string): string;
    static toDefaultDateTimeRepresentation: (val: LikeDate, locale: string, alwaysIncludeYear?: boolean) => string;
    static addYears(dateToModify: LikeDate, yearsToAdd: number, resetTime?: boolean): Date;
    static startOfLastWeek(): string;
    static endOfLastWeek(): string;
    static startOfLastMonth(): string;
    static endOfLastMonth(): string;
    static startOfLastYear(): string;
    static endOfLastYear(): string;
    static startOfRollingDays(days: number): string;
    static endOfRollingDays(): string;
    static startOfCurrentMonthToNow(): {
        from: string;
        to: string;
    };
    static startOfCurrentYearToNow(): {
        from: string;
        to: string;
    };
}
export declare class DateFormatOptions {
    static dateTimeFormat: Intl.DateTimeFormatOptions;
    static dateTimeWithoutYearFormat: Intl.DateTimeFormatOptions;
    static timeFormat: Intl.DateTimeFormatOptions;
    static dateFormat: Intl.DateTimeFormatOptions;
    static dateNumericFormat: Intl.DateTimeFormatOptions;
    static dateFormatWithoutYear: Intl.DateTimeFormatOptions;
    static dateFullMonthFormat: Intl.DateTimeFormatOptions;
}
export type MonthRange = {
    firstDay: Date;
    lastDay: Date;
};
type LikeDate = string | number | Date;
export {};