import * as EventHandler from './EventHandler';
declare global {
    interface Date {
        formatDate: () => string;
        formatTime: (hideMs?: boolean) => string;
        addDays(days: number): Date;
    }
}
export declare class ServerTime {
    timeApiUrl: string;
    serverStartTime: Date;
    startTime: Date;
    serverDateTime: Date;
    offset: number;
    serverTimeLoaded: boolean;
    raiseMessageEvent: EventHandler.EventHandler<string>;
    constructor(timeApiUrl: string);
    init: () => Promise<void>;
    now: () => Date;
    refreshServerTime: () => Promise<void>;
}
export declare const serverTime: ServerTime;
export declare function dateFromIso8601(isostr: string): Date;
export declare function formatTimeSpan(ts: number): string;
export declare function formatDate(dt: Date): string;
export declare function formatTime(dt: Date, hideMs?: boolean): string;
export declare function getTimeCount(): number;