import type { Chain } from '../chains.js';
import type { CustomWalletClient } from '../client.js';
import type { TransportFactoryParams } from './createConfig.js';
import type { Transport } from 'viem';
export type CreateCustomWalletClientParams = {
    /** Default chain for operations when no chain is specified, defaults to {@link ETH_SEPOLIA} */
    defaultChain?: Chain;
    /** Chains this client will work with */
    chains?: Chain[];
    /** Factory function that creates transport for a given chain */
    customTransportFactory: (params: TransportFactoryParams) => Transport;
};
/**
 * Creates a client with a custom wallet provider transport.
 *
 * @param params - The parameters for creating the client
 * @returns A configured Circle client instance with custom wallet support
 *
 * @example
 * Initialize a client with Fireblocks provider
 * ```typescript
 * import { createCustomWalletClient } from '@circle-fin/usdckit/utils'
 * import { custom } from 'viem'
 * import { FireblocksWeb3Provider } from '@fireblocks/fireblocks-web3-provider'
 *
 * const config = {
 *   apiKey: process.env.FIREBLOCKS_API_KEY || '',
 *   privateKey: process.env.FIREBLOCKS_API_PRIVATE_KEY_PATH || '',
 *   vaultAccountIds: ['2'],
 *   apiBaseUrl: ApiBaseUrl.Sandbox,
 * };
 *
 * const client = createCustomWalletClient({
 *   defaultChain: chains.ETH_SEPOLIA,
 *   chains: [chains.ETH_SEPOLIA, chains.MATIC_AMOY],
 *   customTransportFactory: ({ chainId }) =>
 *     custom(
 *       new FireblocksWeb3Provider({
 *         ...config,
 *         chainId,
 *       }),
 *     ),
 * });
 * ```
 */
export declare function createCustomWalletClient(params: CreateCustomWalletClientParams): CustomWalletClient;