import type { ExtendedViemClient } from '../../../client.js';
import type { Provider } from '../transports/index.js';
/**
 * Submits a signed transaction to the cluster for processing
 *
 * @param client - Extended Viem client
 * @param tx - The transaction to send
 * @param config - Optional configuration for the transaction
 * @returns Promise resolving to transaction signature
 */
export declare function sendTransaction(client: ExtendedViemClient, tx: Parameters<Provider['sol_sendTransaction']>[0] | string | Buffer, config?: Parameters<Provider['sol_sendTransaction']>[1] & {
    encoding?: 'base64';
}): Promise<import("@solana/keys").Signature>;