interface CartItem {
  name: string;
  price: number;
  quantity: number;
}

export function cartTotal(items: CartItem[]): number {
  // Acumula el subtotal de cada ítem (price * quantity) y retorna el total
  return items.reduce( (total: number, item: CartItem) => {

    total += item.price * item.quantity;
    
    return total;
  }, 0);
}