Deferred objects tooling based on the native ES6 Promise implementation

native-promise-deferred.js

/*
 * Extends native promises with deferred objects.
 * Deferreds return an object that has a <promise>, which could be resolved via
 * the included <resolve> and <reject> calls.
 */
if (Promise && !("deferred" in Promise)) Promise.deferred = function() {
  var fResolve,
      fReject,
      P = new Promise(function(resolve, reject) {
        fResolve = resolve;
        fReject = reject;
      });
  return { promise:P, resolve:fResolve, reject:fReject };
}

// Create a new deferred
var def = Promise.deferred();

// On deferred resolution, show the result
def.promise.then(function (result) {
  alert(result);
});

// Resolve delayed
setTimeout(function() {
  def.resolve('Success!');
}, 2000);