JS Design Patterns: Factory Functions, see more at: https://medium.com/p/2adfe878e949

creatingObjectsWithClass.js

class greet {
  constructor(name) {
    this.name = name;
  }

  sayHello() {
    return `Hello ${this.name}!`;
  }


  sayGoodbye() {
    return `Goodby ${this.name}!`;
  }


}

const run = () => {
  const helloRicardo = new sayHelloToMe("Ricardo");

  console.log(helloRicardo.sayHello());
  console.log(helloRicardo.sayGoodbye());
};

run();