export declare class DateUtil {
    static now(): Date;
    static nowISO(): string;
    static formatDate(date: Date, format?: string): string;
    static addDays(date: Date, days: number): Date;
    static addHours(date: Date, hours: number): Date;
    static addMinutes(date: Date, minutes: number): Date;
    static isExpired(date: Date): boolean;
    static getDaysDifference(date1: Date, date2: Date): number;
    static getHoursDifference(date1: Date, date2: Date): number;
    static getMinutesDifference(date1: Date, date2: Date): number;
}