import { HexString, IRpc, OnRpcFetch } from './interfaces';
export declare class RPC implements IRpc {
    private url;
    private cacheDir;
    private cache;
    private storageGets;
    private handlers;
    constructor(url: string | null | undefined, block: string | number | undefined, cacheDir: string | undefined);
    onFetch(h: OnRpcFetch): void;
    private atBlock;
    private fetchBuffer;
    private fetchJson;
    private _fetchCached;
    private _fetchNonCached;
    getChainId(): Promise<Uint8Array>;
    getBlock(): Promise<Uint8Array>;
    getCode(contract: HexString): Promise<Uint8Array>;
    getBalance(key: HexString): Promise<bigint>;
    getTimestamp(): Promise<number>;
    getStorageAt(address: HexString, key: bigint): Promise<bigint>;
    private initializeFromLastExecution;
    sealExecution(): Promise<void>;
    private storageCacheKey;
    _getStorageAt(address: HexString, key: bigint, handleNonCached: (() => void) | null): Promise<bigint>;
}