/**
 * Executes a function repeatedly until it returns a value other than undefined. Waits RETRY_INTERVAL ms between function calls.
 *
 * @param fn The function to execute repeatedly
 * @param onTimeout An optional function to call when fn doesn't return a defined value before IMPLICIT_WAIT_MS.
 *                  If this is not specified then a generic exception will be raised.
 * @param waitTimeMs Override the amount of time to wait before timing out
 * @returns {any} The last value the function returned, as long as it did not time out
 */
export declare function polledWait(fn: () => {
    keepPolling: boolean;
    data: any;
}, onTimeout?: (data: any) => void, waitTimeMs?: number): any;