Function request

tests/smoke/bun/tests/formData.smoke.test.ts:10–48

(options: Record<string, any>, onResponse: (res: PassThrough) => void)

) => {
  const transport = {
    request(options: Record<string, any>, onResponse: (res: PassThrough) => void) {
      const chunks: Buffer[] = [];

      const req = new Writable({
        write(chunk, _encoding, callback) {
          chunks.push(Buffer.from(chunk));
          callback();
        },
      }) as Writable & Record<string, any>;

      req.destroyed = false;
      req.setTimeout = () => {};
      req.write = req.write.bind(req);
      req.destroy = () => {
        req.destroyed = true;
        return req;
      };
      req.close = req.destroy;
      const originalEnd = req.end.bind(req);
      req.end = (...args: unknown[]) => {
        originalEnd(...(args as Parameters<Writable['end']>));

        const body = Buffer.concat(chunks);
        const response = responseFactory ? responseFactory(body, options) : {};

        const res = new PassThrough() as PassThrough & Record<string, any>;
        res.statusCode = response.statusCode ?? 200;
        res.statusMessage = response.statusMessage ?? 'OK';
        res.headers = response.headers ?? { 'content-type': 'application/json' };
        res.req = req;

        onResponse(res);
        res.end(response.body ?? JSON.stringify({ ok: true }));

        return req;
      };

      return req;
    },
  };

  return { transport };