import { Bitcoind } from '../../types';
type EchoIpcParams = {
    bitcoind: Bitcoind;
    arg: string;
};
/**
 * echoipc "arg"
 *
 * Echo back the input argument, passing it through a spawned process in a multiprocess build.
 * This command is for testing.
 *
 */
export declare function echoIpc(params: EchoIpcParams): Promise<any>;
export {};