/**
 * The `PowerAuthTimeSynchronizationService` allows you to synchronize the
 * local device time with the PowerAuth Server and then get the synchronized time.
 */
export declare class PowerAuthTimeSynchronizationService {
    private instanceId;
    /**
     * Creates a new instance of `PowerAuthTimeSynchronizationService`.
     *
     * @param instanceId Identifier of `PowerAuth` instance bound to this service.
     */
    constructor(instanceId: string);
    /** Returns whether the service has its time synchronized with the server. */
    isTimeSynchronized(): Promise<boolean>;
    /**
     * Return the current local time synchronized with the server. The returned value is in milliseconds since the
     * reference date 1.1.1970 (e.g. unix timestamp.)
     *
     * If the local time is not synchronized, then returns the current device local time.
     *
     * You can test `isTimeSynchronized` method if this is not sufficient for your purposes.
     */
    currentTime(): Promise<number>;
    /** Synchronize the local time with the time on the server. */
    synchronizeTime(): Promise<void>;
    /** Reset the time synchronization. The time must be synchronized again after this call. */
    resetTimeSynchronization(): Promise<void>;
    /**
     * Contains calculated local time difference against the server in milliseconds. The value of the property
     * is informational and is provided only for the testing or the debugging purposes.
     */
    localTimeAdjustment(): Promise<number>;
    /**
     * Contains value representing a maximum absolute deviation of synchronized time against the actual time on the server in milliseconds.
     *
     * Depending on this value you can determine whether this deviation is within your expected margins. If the current
     * synchronized time is out of your expectations, then try to synchronize the time again.
     */
    localTimeAdjustmentPrecision(): Promise<number>;
}