/**
 * Calls given predicate initially and then every given periodicIntervalCheck
 * until the predicate returns truthy value which will be resolved in Promise returned by this function
 * @param predicate Function periodically checking and waiting for certain state
 * @param periodicIntervalCheck
 * @param timeout Optionally pass in a timeout in ms after which we should give up any remaining hope for success of this mission
 */
export declare function checkPeriodically<T>(predicate: () => T | null | undefined, periodicIntervalCheck: number, timeout?: number): Promise<T>;