JavaScript Example

function Pizza() {
  this.pizza = {};
  this.setBase = (base) => (this.pizza.base = base);
  this.setSauce = (sauce) => (this.pizza.sauce = sauce);
  this.setCheese = (cheese) => (this.pizza.cheese = cheese);
  this.setToppings = (toppings) => (this.pizza.toppings = toppings);
  this.bake = () => console.log(this.pizza);
}

module.exports = Pizza;

const Pizza = require("./PizzaBuilder");
const pepperoni = new Pizza();

pepperoni.setBase("Whole Wheat");
pepperoni.setSauce("Tomato Basil");
pepperoni.setCheese("Smoked Mozzarella");
pepperoni.setToppings(["Pepperoni", "Basil"]);

pepperoni.bake();