Chaining thenables

thenables.js

const q = require('q');

function doSomething(data) {
  data.one = 1;
  return q(data);
}

function somethingElse(data) {
  const deferred = q.defer();
  setTimeout(function() {
    console.log('Yes, I happened.')
    deferred.resolve(data);
  }, 1000)
  
  return deferred.promise;
}

function yeahImDone(data) {
  return q(data);
}

doSomething().then(somethingElse).then(yeahImDone);