import { LRUCache } from 'lru-cache';
/**
 * Process-wide LRU used by core helpers for memoizing RPC / fetch results.
 * Kept in a leaf module so importers don't pull in the broader `core/fetcher.ts`
 * graph (which would cycle through `core/helpers/web3.ts`).
 */
export declare const CACHE: LRUCache<string, any, unknown>;
export declare const getSafeCache: <T>(key: string) => Promise<T | null>;
export declare const setSafeCache: <T>(key: string, value: T) => Promise<void>;