import { Address, ByteArray, Chain } from "viem";
/** Retrieve the Viem chain config for a given chainId. */
export declare function getViemChainById(chainId: number): Chain;
/** Get the RPC URL for a given chainId. */
export declare function getAlchemyTransportUrl(chainId: number, alchemyApiKey: string): string;
/** Converts a buffer to a viem Address. Zero-length buffer = zero addr.
 * Any length other than 0 or 20 bytes = throws an error.
 */
export declare function bytesToAddr(bytes: ByteArray): Address;