Putting It All Together — A Mini Library

Let's combine everything: module pattern, separation of concerns, clean naming. A well-structured mini-library exposes a clear API and hides internal complexity.

const ShoppingCart = (() => {
  const items = [];
  const getTotal = () => items.reduce((s, i) => s + i.price, 0);

  return {
    addItem(name, price) { items.push({ name, price }); },
    getTotal,
    summary() {
      console.log(`Items: ${items.length}, Total: ${getTotal()}`);
    }
  };
})();

FINAL CHALLENGE

Build a ShoppingCart module as above. Add two items: "apple" at price 1.5 and "bread" at price 2.5. Call summary() and make sure it prints: Items: 2, Total: 4

Need a hint?

1.5 + 2.5 = 4. Use template literal: Items: items.length, Total: getTotal()

Expected Output:

Items: 2, Total: 4