flyweight.js

class Ingredient {
  constructor(name) {
    this.name = name;
  }
  
  getInfo() {
    return `I'm a ${this.name}`
  }
}

class Ingredients {
  constructor() {
    this.ingredients = {};
  }

  create(name) {
    let ingredient = this.ingredients[name];
    if (ingredient) return ingredient;

    this.ingredients[name] = new Ingredient(name);

    return this.ingredients[name];
  }
}

export { Ingredients };