import ServerDateService from "../service/ServerDateService";
declare class ServerDate {
    offset: number;
    private serverDateService;
    static instance: ServerDate;
    private isActive;
    private constructor();
    static getInstance(serverDateService: ServerDateService): ServerDate;
    static now(): Date;
    sync(): void;
    private syncIfNeeded;
    private getServerTime;
    static clear(): void;
}
export default ServerDate;