TypeScript and React

Introduction

The book "TypeScript and React" (original title: TypeScript and React) by Stefan Baumgartner, published in 2021, is a compact yet comprehensive guide to integrating strict TypeScript typing into the React ecosystem. In 200 pages, the author manages to cover key aspects, from basic types to advanced patterns, making the book useful both for beginners already familiar with React and for experienced developers looking to systematize their knowledge.

What the book is about

The book is structured as a practical course that step by step guides the reader from simple examples to complex architectural solutions. The main focus is on:

• Setting up a React project with TypeScript (CRA, Vite, manual configuration).
• Typing functional and class components.
• Working with hooks (useState, useEffect, useReducer, custom hooks).
• Handling events and forms.
• Typing context (Context API) and portals.
• Integration with popular libraries (React Router, Redux, Formik).
• Advanced techniques: discriminated unions, conditional types, mapped types.
• Testing components with TypeScript (Jest, React Testing Library).

Who this book is for

The book is intended for developers who already have basic experience with React (JSX, components, hooks) and want to learn TypeScript to improve code reliability and readability. It will also be useful for those transitioning from JavaScript to TypeScript and looking for a structured approach to typing React applications.

What the reader will learn

• How to set up TypeScript in a React project and avoid common configuration mistakes.
• How to properly type props, state, and events.
• How to create reusable types for components and hooks.
• How to work with generic types to increase code flexibility.
• How to type Redux (createSlice, createAsyncThunk) and React Router (useParams, useLocation).
• How to write type-safe tests.
• How to use advanced TypeScript features (conditional types, infer, template literal types) in real projects.

Strengths

Practical focus. Each chapter contains numerous code examples that can be immediately applied in work. The author does not delve into excessive theory but focuses on real-world scenarios.

Relevance. The book was written in 2021, but the core concepts of TypeScript and React remain relevant in 2025. Modern versions of libraries are covered (React 17-18, TypeScript 4.x).

Structure. The material is divided into logical blocks: from simple to complex. Each chapter ends with a summary and exercises for reinforcement.

Depth. Despite its small size, the book touches on advanced topics such as conditional types and type inference, which is rare in similar guides.

Readability. The author writes in a lively, clear language, avoiding a dry academic style. Examples are accompanied by explanations.

Who it is recommended for

• Frontend developers transitioning from JavaScript to TypeScript.
• React developers looking to improve code quality through typing.
• Team leads and architects implementing TypeScript in existing React projects.
• Students and course graduates who have mastered the basics of React and are striving for professional growth.

The book "TypeScript and React" is not a reference manual but a practical guide that will help you write more reliable, self-documenting, and easily maintainable code. We recommend it to anyone who wants to take their React development skills to the next level.