import { HashMap } from './types';
/**
 * Factory method instantiates an instance of persistent key value storage with predefined ttl value
 * @param ttl - time to live in ms
 * @param networkMap - maps chain IDs to their network identifiers (e.g. { BTC: "mainnet", ETH: "1" })
 *                     so entries are scoped per-network and won't cross-restore on network changes
 * @returns - key value storage
 */
export declare const createAccountStorage: (ttl: number, networkMap?: Record<string, string>) => HashMap;
