If you are a React developer and want to build your React apps faster and more robustly, this course is for you. Learn to integrate TypeScript with React, boost your productivity, and create apps that are easier to maintain.

In this course, you will learn how to utilize TypeScript’s sophisticated type system to make React development faster and your code more readable. You will learn how to create component props, state, and events that are strongly-typed, allowing you to quickly understand what you can pass and helping you avoid mistakes.

Lastly, you will set up React projects with TypeScript. First, you will learn how to do this with the Create React App tool, then how to create a React and TypeScript project with Webpack and Babel.

Using TypeScript with React

It is possible to do this in TypeScript by putting a `?` before the type annotation.

In our CodeSandbox project that we were working on in the last lesson, add an optional `message` prop to the `Hello` component. Render the value of the `message` prop on the line after the hello message in a `p` tag. Also, remove the `FC` type and use a type annotation on the `props` parameter instead.

Sometimes we want a prop to be optional. In this lesson, we'll learn how to do this for React components that have their props strongly-typed with TypeScript.

Why TypeScript?

Using basic types

Creating types

Working with generic types

Creating strongly-typed function component props

Creating strongly-typed function component state

Creating strongly-typed class components

Creating strongly-typed component events and event handlers

Creating strongly-typed context

Creating strongly-typed refs

Creating React projects with TypeScript using Create React App

Creating a React and TypeScript project manually

Putting everything together

Specifying a prop as optional