export declare function overrideDateCurrentTimestamp<TGlobal extends {
    Date: DateConstructor;
}>(root: TGlobal, getCurrentTimestamp: () => number): DateConstructor;
export declare function overrideDateCurrentTimestampByAsync<TGlobal extends {
    Date: DateConstructor;
}>(root: TGlobal, getCurrentTimestamp: () => Promise<number>, // in milliseconds
updatingInterval?: number): DateConstructor;
export declare function overrideDateCurrentTimestampInSecondsByAsync<TGlobal extends {
    Date: DateConstructor;
}>(root: TGlobal, getCurrentTimestampSeconds: () => Promise<number>, // in seconds
updatingInterval?: number): DateConstructor;
export declare function overrideDateCurrentTimestampInMinutesByAsync<TGlobal extends {
    Date: DateConstructor;
}>(root: TGlobal, getCurrentTimestampMinutes: () => Promise<number>, // in minutes
updatingInterval?: number): DateConstructor;