Gain insights into integrating TypeScript with React to improve productivity. Learn about strongly-typed props, state, and events, and set up projects using Create React App, Webpack, and Babel.

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

## Understanding an intersection type

Intersection types, like union types, combine existing types to form a new type. An intersection type will have **all** the members from the types it is based on. Note that intersection types don't contain only common members from the types it is based on, as you may first expect.

An intersection type is constructed from existing types using the ampersand (`&`) character:

```
type A_and_B_and_C = A & B & C;
```

The example below combines `Name` and `PhoneNumber` types to create a `Contact` type containing `firstName`, `lastName`, `landline`, and `mobile` properties:

# Understanding an intersection type

Intersection types, like union types, combine existing types to form a new type. An intersection type will have **all** the members from the types it is based on. Note that intersection types don't contain only common members from the types it is based on, as you may first expect.

An intersection type is constructed from existing types using the ampersand (`&`) character:

```
type A_and_B_and_C = A & B & C;
```

The example below combines `Name` and `PhoneNumber` types to create a `Contact` type containing `firstName`, `lastName`, `landline`, and `mobile` properties:

In this lesson, we'll learn what an intersection type is and how to create one.


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

Creating intersection types

Understanding an intersection type #