import { IncomingMessage, Server, ServerResponse } from 'node:http';
import { FetchBackend, HttpResponse } from '@opra/client';
import { ApiExpect } from './api-expect/api-expect.js';
import type { OpraTestClient } from './test-client.js';
declare type RequestListener = (req: IncomingMessage, res: ServerResponse) => void;
export type ResponseExt = {
    expect: ApiExpect;
};
/**
 *
 * @class TestBackend
 */
export declare class TestBackend extends FetchBackend {
    protected _server: Server;
    constructor(app: Server | RequestListener, options?: OpraTestClient.Options);
    protected send(req: Request): Promise<Response>;
    protected createResponse(init: HttpResponse.Initiator): HttpResponse<any> & ResponseExt;
}
/**
 * @namespace TestBackend
 */
export declare namespace TestBackend {
    interface Options extends FetchBackend.Options {
    }
}
export {};