In this chapter, you'll learn about property validation in React components. This might seem simple at first glance, but it's an important topic because it leads to bug-free components. We'll kick this off with a discussion about predictable outcomes and how this leads to components that are portable throughout the application.
Next, we'll walk through examples of some of the simple type-checking property validators that come with React. Then, we'll walk through some more complex property-validation scenarios. Finally, we'll wrap the chapter up with an example of how to implement your own custom validators.