export declare class FakeTimers {
    private mockTimers;
    private isFaking;
    private defaultApis;
    constructor();
    useFakeTimers(config?: any): void;
    useRealTimers(): void;
    runAllTimers(): void;
    runAllTimersAsync(): Promise<void>;
    runOnlyPendingTimers(): void;
    runOnlyPendingTimersAsync(): Promise<void>;
    advanceTimersByTime(msToRun: number): void;
    advanceTimersByTimeAsync(msToRun: number): Promise<void>;
    advanceTimersToNextTimer(steps?: number): void;
    advanceTimersToNextTimerAsync(steps?: number): Promise<void>;
    clearAllTimers(): void;
    getTimerCount(): number;
    setSystemTime(now?: number | Date): void;
    getRealSystemTime(): number;
    now(): number;
    private ensureFakingTime;
}
export declare const fakeTimers: FakeTimers;