Simple Factory Pattern

SimpleFactory.js

const dog = (name) => {
  const type = 'dog';

  return {
    name: name,
    speak() {
      console.log(`my name is ${this.name} i am a ${type}`);
    }
  };
}

let spot = dog('spot');
spot.speak();
// my name is spot i am a dog

let rufus = dog('rufus');
rufus.speak();
// my name is rufus i am a dog