Fake Singleton with Node

class.js

class Dog {
  constructor(name = "default") {
    this.name = name;
    console.log("My name is ", name);
  }
}

module.exports = Dog;

index.js

const Dog = require("./class");

const coco = new Dog("Coco");
const lola = new Dog("Lola");

console.log(coco);
console.log(lola);

const s1 = require("./singleton");
const s2 = require("./singleton");
require("./singleton");

console.log(s1);
console.log(s2);
console.log(s1 === s2);

singeleton.js

const Dog = require("./class");

module.exports = new Dog();