javascript promises better way

var createPromise = function(label, time) {

  return function() {

    return new Promise(function(resolve) {

      setTimeout(function() {
        console.log(label);
        resolve();
      }, time);
    });
  };
};

new Promise(function(resolve) {
    setTimeout(function() {
      console.log('A');
      resolve(createPromise('B', 900)());  // this dispatches the promise right away
    }, 500);
  })
  .then(createPromise('C', 100))  // this DO NOT dispatches the promise right away
  .then(createPromise('D', 10))
  .then(createPromise('E', 30))
  .then(createPromise('F', 5));

$ node promises-2.js
A
B
C
D
E
F

javascript promises wrong way

var createPromise = function(label, time) {

  return new Promise(function(resolve) {

    setTimeout(function() {
      console.log(label);
      resolve();
    }, time);
  });
};

new Promise(function(resolve) {
    setTimeout(function() {
      console.log('A');
      resolve(createPromise('B', 900));
    }, 500);
  })
  .then(function() {
    return createPromise('C', 100);
  })
  .then(createPromise('D', 10)) // this dispatches the promise right away
  .then(createPromise('E', 30)) // this dispatches the promise right away
  .then(function() {
    return createPromise('F', 5);
  });
  
$ node promises-1.js
D
E
A
B
C
F