fooQ.js

var Q = require('q');

function hello() {
  var d = Q.defer();
  setTimeout(function() {
    d.resolve('hello');
  }, 1000);
  return d.promise;
}

function print(h) {
  console.log(h + ', world');
}

function one() {
  var d = Q.defer();
  setTimeout(function() {
    d.resolve(1);
  }, 2000);
  return d.promise;
}

function two() {
  var d = Q.defer();
  setTimeout(function() {
    d.resolve(2);
  }, 1000);
  return d.promise;
}

function sum(one, two) {
  console.log(one + two);
}

Q.fcall(hello).done(print);
Q.allResolved([Q.fcall(one), Q.fcall(two)]).spread(sum).done();

console.log('fooQ');