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React and React Native - Fifth Edition

You're reading from  React and React Native - Fifth Edition

Product type Book
Published in Apr 2024
Publisher Packt
ISBN-13 9781805127307
Pages 508 pages
Edition 5th Edition
Languages
Authors (2):
Mikhail Sakhniuk Mikhail Sakhniuk
Profile icon Mikhail Sakhniuk
Adam Boduch Adam Boduch
Profile icon Adam Boduch
View More author details

Table of Contents (33) Chapters

Preface 1. Part I: React
2. Why React? 3. Rendering with JSX 4. Understanding React Components and Hooks 5. Event Handling in the React Way 6. Crafting Reusable Components 7. Type-Checking and Validation with TypeScript 8. Handling Navigation with Routes 9. Code Splitting Using Lazy Components and Suspense 10. User Interface Framework Components 11. High-Performance State Updates 12. Fetching Data from a Server 13. State Management in React 14. Server-Side Rendering 15. Unit Testing in React 16. Part II: React Native
17. Why React Native? 18. React Native under the Hood 19. Kick-Starting React Native Projects 20. Building Responsive Layouts with Flexbox 21. Navigating Between Screens 22. Rendering Item Lists 23. Geolocation and Maps 24. Collecting User Input 25. Responding to User Gestures 26. Showing Progress 27. Displaying Modal Screens 28. Using Animations 29. Controlling Image Display 30. Going Offline 31. Other Books You May Enjoy
32. Index

Avoiding lazy components

It might be tempting to make most of your React components lazy components that live in their own bundle. After all, there isn’t much extra work that needs to happen to set up separate bundles and make lazy components. However, there are some downsides to this. If you have too many lazy components, your app will end up making several HTTP requests to fetch them: at the same time. There’s no benefit to having separate bundles for components used on the same part of the app. You’re better off trying to bundle components together in a way that one HTTP request is made to load what is needed on the current page.

A helpful way to think of this is to associate pages with bundles. If you have lazy page components, everything on that page will also be lazy yet bundled together with other components on the page. Let’s build an example that demonstrates how to organize our lazy components. Let’s say that your app has a couple of...

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