const uploadStream = (file) => {
  const pass = new PassThrough();
  s3Client.upload(
    {
      Bucket: 'demo-bucket',
      Key: file.newFilename,
      Body: pass,
    },
    (err, data) => {
      // I want to add something here to capture the response and also tell formidable not to exit
      // until we get here.
    },
  );

  return pass;
};

const server = http.createServer((req, res) => {
    const form = formidable({
      fileWriteStreamHandler: uploadStream,
    });

    form.parse(req, () => {
      // I only want this to fire once all the files have completed uploading to S3. Ideally
      // I also want to access the results from the S3 upload as well so I can include the S3
      // response data in the endpoint return response
      res.writeHead(200);
      res.end();
    });
});