What are the best practices for lazy loading in React apps?

What are the best practices for lazy loading in React apps?

Lazy loading in React helps improve performance by loading components only when they are needed. Some best practices include using React's React.lazy and Suspense, code splitting with dynamic imports, and optimizing images.

Can you explain how to implement React.lazy?

Sure! You can implement React.lazy by importing your component like this: const MyComponent = React.lazy(() => import('./MyComponent')); Then, wrap it in a Suspense component to handle loading states.

What about error handling during lazy loading?

For error handling, you can use an error boundary. Wrap your lazy-loaded component in an error boundary to catch any loading errors and display a fallback UI.

Are there any tools to analyze lazy loading performance?

Yes, tools like Lighthouse and WebPageTest can help analyze the performance of lazy loading in your React app, providing insights on loading times and resource usage.