$when for node

promisedRequests.js

var when = requrie('when'),
    request = require('request');

var getAll = when.all([
  promisedRequest({ url: 'http://google.com' }),
  promisedRequest('http://yahoo.com'),
  promisedRequest('https://foo.bar')
]);

function promisedRequest(options) {
  return when.promise(function(resolve, reject, notify) {
    request.apply(this, [options, function(err, res, body) {
      if (err)
        return reject(err);
      return resolve(body);
    }]);
  });
}

getAll.then(function(results) {
  console.log(results);
});