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)

Nested routes

A nested route is when a URL is more than one level deep and it renders multiple components. We are going to implement some nested routes in this section in our Admin page. Our completed Admin page will look like the following screenshot:

The URL in the preceding screenshot is 3 levels deep which renders the following:

  • The top-level menu containing links for Users and Products.
  • A menu containing all the users. This is just Fred, Bob, and Jane is our example.
  • Information about the selected user.
  1. Let's start by opening AdminPage.tsx and add import statements for the following from react-router-dom:
import { NavLink, Route, RouteComponentProps } from "react-router-dom";
  • We'll use the NavLink component to render the menus
  • The Route component will be used to render the nested routes
  • The RouteComponentProps type will be used to get the id of...