Reading, navigating, and debugging a large frontend codebase can feel overwhelming for web developers, but you can overcome this with expert guidance from a seasoned software professional with over 20 years’ experience in developing a complex line of business applications. This book will help you learn React, TypeScript, and Next.js—the core technology stack behind scalable, high-performance web applications used by top companies. This third edition of Learn React with TypeScript is updated with the latest features of React 19, including server components, server actions, and powerful new hooks. The chapters show you how to use TypeScript’s advanced features for enhanced code reliability and maintainability when building robust, type-safe components. You’ll explore efficient data fetching strategies with RSCs in Next.js, as well as in single-page applications (SPAs). The book also covers modern state management with Zustand, best practices for form handling, and strategies for building well-structured, reusable components that streamline development. Finally, you’ll focus on unit testing with Vitest, ensuring your React components are resilient and error-free. By the end of this book, you'll have at your disposal the skills and best practices needed to create maintainable and performant React applications with TypeScript and Next.js.