request_await.js

БЫЛО:

const getToken = body => body.match(/value="(\w+)"/)[1];

export default (registrationFormUrl, submitFormUrl, nickname, callback) => {
  // BEGIN (write your solution here)
  const {protocol, hostname, path, pathname, port} = url.parse(submitFormUrl);
  http.get(registrationFormUrl, res => {
  const body = [];
  res.on('data', chunk => {
    body.push(chunk.toString());
  }).on('end', () => {
    if (res.statusCode !== 200) {
      callback(new Error(res.statusCode));
      return;
    } 
    const html = body.join('');
    const postData = querystring.stringify({ nickname, token: getToken(html) });
    const options = {
      host: hostname,
      path: path,
      port: port,
      method: 'POST',
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
        'Content-Length': Buffer.byteLength(postData)
      }
    };
    const req = http.request(options, (result) => {
      if (result.statusCode !== 302) {
        callback(new Error(result.statusCode));
        return;
      } 
        callback(null);
    });
    req.end(postData);
  });
  });
  // END
};

СТАЛО:

export default (registrationFormUrl, submitFormUrl, nickname) => {
  const doIt = async () => {
    const response = await get(registrationFormUrl);
    if (response.status !== 200) {
      return (new Error(response.status));
    }
    const postData = await post(submitFormUrl, {nickname, token: getToken(response.data)});
    if (postData.status !== 302) {
      return (new Error(postData.status));
    }
    return null;
  };
  return doIt();
};