The MERN Marketplace with a cart, payments, and orders
The MERN Marketplace application developed in Chapter 6, Exercising New MERN Skills with an Online Marketplace will be extended to include a shopping cart feature, Stripe integration for processing credit card payments, and a basic order-management flow. The implementations that follow are kept simple to serve as starting points for developing more complex versions of these features.
The following component-tree diagram shows all the custom components that make up the MERN Marketplace frontend. The features discussed in this chapter modify some of the existing components, such as Profile, MyShops, Products, and Suggestions, and also add new components, such as AddToCart, MyOrders, Cart, and ShopOrders:

Note
The code for the complete MERN Marketplace application is available on GitHub github.com/shamahoque/mern-marketplace.You can clone this code and run the application as you go through the code explanations in the rest of this chapter...