/**
 * Poll a particular function until a specified interval/timeout.
 */
export declare class PollUtil {
    /**
     * Method used for polling.
     * @param fn Function that needs to be polled.
     * @param timeout Time after which the polling will stop.
     * @param interval Time difference between calls while polling.
     */
    static poll: (fn: any, timeout: number, interval: number) => Promise<any>;
}