Cart total with async prices

const PRICES = { apple: 30, bread: 45, milk: 28, eggs: 72 };

// Pretend network call: resolves with the price after a short delay.
async function fetchPrice(sku) {
  await new Promise((resolve) => setTimeout(resolve, 1));
  if (!(sku in PRICES)) throw new Error(`Unknown product: ${sku}`);
  return PRICES[sku];
}

// Looks up each product's price and returns the cart total in rupees.
async function cartTotal(items) {
  let total = 0;
  items.forEach(async (item) => {
    const price = await fetchPrice(item.sku);
    total += price * item.qty;
  });
  return total;
}