import type { Account } from '../../accounts/types.js';
import type { Client } from '../../clients/createClient.js';
import type { Transport } from '../../clients/transports/createTransport.js';
import type { ErrorType } from '../../errors/utils.js';
import type { Chain } from '../../types/chain.js';
import type { RequestErrorType } from '../../utils/buildRequest.js';
import { type NumberToHexErrorType } from '../../utils/encoding/toHex.js';
export type AddChainParameters = {
    /** The chain to add to the wallet. */
    chain: Chain;
};
export type AddChainErrorType = RequestErrorType | NumberToHexErrorType | ErrorType;
/**
 * Adds an EVM chain to the wallet.
 *
 * - Docs: https://viem.sh/docs/actions/wallet/addChain
 * - JSON-RPC Methods: [`eth_addEthereumChain`](https://eips.ethereum.org/EIPS/eip-3085)
 *
 * @param client - Client to use
 * @param parameters - {@link AddChainParameters}
 *
 * @example
 * import { createWalletClient, custom } from 'viem'
 * import { optimism } from 'viem/chains'
 * import { addChain } from 'viem/wallet'
 *
 * const client = createWalletClient({
 *   transport: custom(window.ethereum),
 * })
 * await addChain(client, { chain: optimism })
 */
export declare function addChain<chain extends Chain | undefined, account extends Account | undefined>(client: Client<Transport, chain, account>, { chain }: AddChainParameters): Promise<void>;
//# sourceMappingURL=addChain.d.ts.map