In this chapter, we first learned about React context as an alternative to passing down props over multiple levels of React components. We then learned about context providers and consumers, and the new way to define consumers, via Hooks. Next, we learned when it does not make sense to use contexts, and when we should use inversion of control instead. Then, we used what we learned in practice, by implementing themes in our blog app. Finally, we used React context for the global state in our blog app.

In the next chapter, we are going to learn how to request data from a server, using React and Hooks. Then, we are going to learn about React.memo to prevent unnecessary re-rendering of components, and React Suspense to lazily load components when they are needed.