Take your React knowledge to the next level with advanced concepts, strategies, techniques, patterns and in-depth investigations. This book is a must if: - You've gone through the React docs, implemented a few simple apps, and now are wondering: “How can I progress to the next level?”; - You've been working with React for a few years and you're confident that you know it inside and out. This book might have a surprise or two for you ?; - You want to become the go-to person for everything React performance and be the source of in-depth "how things actually work" knowledge in your team. React docs are very good to start with React. Millions of books, courses, and blogs are out there aimed at beginners. But what to do after you've started successfully? Where to go if you want to understand how things work on a deeper level? What to read if you've been writing React for a while and beginner or even intermediate-level courses are not enough? There are not many resources available for this. This is the gap this book aims to fill.