ES6 Classes as Factories

HappyFactory.js

class HappyFactory {
  constructor(message) {
    return Promise.resolve(`${message} there!`);
  }
}

new HappyFactory("Howdy").then(::console.log);
// "Howdy there!"

HappyFactory.min.js

"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var HappyFactory = function HappyFactory(message) {
  _classCallCheck(this, HappyFactory);

  return Promise.resolve(message + " there!");
};

new HappyFactory("Howdy").then(console.log.bind(console));
// "Howdy there!"