Book Image

Professional React Native

By : Alexander Benedikt Kuttig
Book Image

Professional React Native

By: Alexander Benedikt Kuttig

Overview of this book

The React Native framework offers a range of powerful features that make it possible to efficiently build high-quality, easy-to-maintain frontend applications across multiple platforms such as iOS, Android, Linux, Mac OS X, Windows, and the web, helping you save both time and money. And this book is your key to unlocking its capabilities. Professional React Native provides the ultimate coverage of essential concepts, best practices, advanced processes, and tips for everyday developer problems. The book makes it easy to understand how React Native works under the hood using step-by-step explanations and practical examples so you can use this knowledge to develop highly performant apps. As you follow along, you'll learn the difference between React and React Native, navigate the React Native ecosystem, and revisit the basics of JavaScript and TypeScript needed to create a React Native application. What’s more, you’ll work with animations and even control your app with gestures. Finally, you'll be able to structure larger apps and improve developer efficiency through automated processes, testing, and continuous integration. By the end of this React native app development book, you'll have gained the confidence to build high-performance apps for multiple platforms, even on a bigger scale.
Table of Contents (19 chapters)
1
Part 1: Getting Started with React Native
5
Part 2: Building World-Class Apps with React Native
12
Part 3: React Native in Large-Scale Projects and Organizations

Summary

In this chapter, we had a look at JavaScript engines in general, learned about the special requirements React Native has for a JavaScript engine, the different engines we can use in React Native, and how to change the JS engine of our React Native project. We then had a look at Hermes, a JavaScript engine developed with mobile in general and React Native especially in mind.

After understanding the approach of Hermes and its benefits, we compared mobile app key metrics on apps running on JavaScriptCore, V8, and Hermes. While there is no big difference in using JSC or V8, Hermes brings a huge boost in terms of TTI and memory utilization to React Native.

After mastering JavaScript engines, we’ll have a look at useful tools when working with React Native in the next chapter.