Book Image

Learn React with TypeScript 3

By : Carl Rippon
Book Image

Learn React with TypeScript 3

By: Carl Rippon

Overview of this book

React today is one of the most preferred choices for frontend development. Using React with TypeScript enhances development experience and offers a powerful combination to develop high performing web apps. In this book, you’ll learn how to create well structured and reusable react components that are easy to read and maintain by leveraging modern web development techniques. We will start with learning core TypeScript programming concepts before moving on to building reusable React components. You'll learn how to ensure all your components are type-safe by leveraging TypeScript's capabilities, including the latest on Project references, Tuples in rest parameters, and much more. You'll then be introduced to core features of React such as React Router, managing state with Redux and applying logic in lifecycle methods. Further on, you'll discover the latest features of React such as hooks and suspense which will enable you to create powerful function-based components. You'll get to grips with GraphQL web API using Apollo client to make your app more interactive. Finally, you'll learn how to write robust unit tests for React components using Jest. By the end of the book, you'll be well versed with all you need to develop fully featured web apps with React and TypeScript.
Table of Contents (14 chapters)

Render props pattern

We used a form of the render props pattern in the previous section where we leveraged the children prop. We used this to allow a consumer of our Tab component to render custom content for the tab heading. This is great, but what if we want to allow the consumer to render custom content in different sections of the component? In our Tabs component, we haven't allowed the consumer to render the content of the tab yet. We definitely want the consumer to be able to specify custom content for this, but how do we do this now that we've already used the children prop for the heading?

The answer is simple but not obvious at first. The answer is that, because props can be anything, they can be a function that renders content – just like the special children prop. These types of prop are called render props. We can have as many render props as we like...