Node-Promise.js

var app = require('express')();


function SimplePromise(){
  this.promise = new Promise();
}

SimplePromise.prototype.resolve = function(subj) {
  for (var i = 0; i < this.promise.callbacks.length; i++) {
    this.promise.callbacks[i](subj);
    this.promise.callbacks.splice(i, 1);
    i -= 1;
  }
  this.promise.subj = subj;
  this.promise.resolved = true;
}

SimplePromise.prototype.reject = function(error) {
  throw error;
}

function Promise() {
  this.callbacks = [];
  this.resolved = false;
  this.subj = null;
}

Promise.prototype.then = function(callback) {
  if(this.resolved) {
    setTimeout(callback, 0, this.subj);
    console.log('Resolved')
  } else {
    console.log(callback.toString());
    this.callbacks.push(callback);
  }
  return this;
}

function runPromises() {
  var simplePromise = new SimplePromise();
  setTimeout(function() {
    simplePromise.resolve('Ho-ho');
  }, 500);
  return simplePromise.promise;
}

app.get('/api', function(req, res) {
  var promises = {};
  runPromises().then(function(subj){
    var theTime = new Date();
    promises.p1 = {subject: subj, timeStamp: theTime};

    console.log(subj + ' ' + theTime);
  }).then(function(subj) {
    var theTime = new Date();
    promises.p2 = {subject: subj, timeStamp: theTime};

    console.log(subj + ' ' + theTime);

    res.status(200).json(promises)
  });
})
app.listen('8989');