import { GeneralFunction } from "../types";
/**
 * fallback to cache, if runner throw error, will try to return the latest cached value
 *
 * @since 5.15.0
 * @category Fallback
 *
 * @param runner
 * @param cacheSize the maximum number cache item (different parameters)
 */
export declare function fallbackCache<T extends GeneralFunction>(runner: T, cacheSize?: number): T;