node-harmony-promise-composition.js

// node --version v0.11.13
// node --harmony

//
// Composition FAIL
//
var p1
  ;
  
p1 = new Promise(function (resolve, reject) {
  var p2
    ;
    
  p2 = new Promise(function (resolve, reject) {
    resolve("Hey");
  });
  
  return p2;
}).then(function (data) {
  console.log(data);
});
// FAIL

ugly-way.js

// node --version v0.11.13
// node --harmony

//
// Works, but not as pretty
//
var p1
  ;
  
p1 = new Promise(function (resolve, reject) {
  var p2
    ;
    
  p2 = new Promise(function (resolve, reject) {
    resolve("Hey");
  });
  
  p2.then(resolve, reject);
}).then(function (data) {
  console.log(data);
});
// Hey