import type { ExtendedViemClient } from '../../../client.js';
import type { Provider } from '../transports/index.js';
/**
 * Simulates a transaction to get a preview of its effects
 *
 * @param client - Extended Viem client
 * @param tx - Transaction to simulate
 * @param config - Optional configuration for {@link sol_simulateTransaction}
 * @returns Promise resolving to transaction simulation results
 */
export declare function simulateTransaction(client: ExtendedViemClient, tx: Parameters<Provider['sol_simulateTransaction']>[0] | string | Buffer, config?: Parameters<Provider['sol_simulateTransaction']>[1] & {
    encoding?: 'base64';
}): Promise<Readonly<{
    context: Readonly<{
        slot: import("@solana/rpc-types").Slot;
    }>;
    value: Readonly<{
        readonly accounts: null;
    }> & Readonly<{
        err: import("@solana/rpc-types").TransactionError | null;
        logs: string[] | null;
        returnData: Readonly<{
            data: import("@solana/rpc-types").Base64EncodedDataResponse;
            programId: import("@solana/addresses").Address;
        }> | null;
        unitsConsumed?: bigint;
    }>;
}>>;