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)

Chapter 6: Component Patterns

  1. What special property does React give us to access a components children?

A property called children

  1. How many components can share state with React context?

As many components as we like that are under the provider component in the component hierarchy

  1. When consuming the React context, what pattern does it use to allow us to render our content with the context?

The render props pattern

  1. How many render props can we have in a component?

As many as we like

  1. How many children props do we have in a component?


  1. We only used withLoader on the product page. We have the following function in ProductData.ts to get all the products:
export const getProducts = async (): Promise<IProduct[]> => {
await wait(1000);
return products;

Can you use this to implement a loader spinner on the products page by consuming the withLoader HOC.

First we...