import { TimePeriod } from '../types';
export declare class XDate {
    private date;
    static now(): XDate;
    static fromWeek(week: number, year: number, dayOfWeek?: number): XDate;
    constructor(date?: DateTime);
    add(value: number, period: TimePeriod): this;
    set(value: number, period: TimePeriod): this;
    setTime(time: string): this;
    setDayOfWeek(dayOfWeek: number): this;
    toInfo(): import("../types").DateInfo | undefined;
    toText(withHour?: boolean): string | undefined;
    toString(): string | undefined;
    get value(): Date | null | undefined;
}