How can I set up performance monitoring in my React app?

How can I set up performance monitoring in my React app?

You can use tools like React Profiler, Google Lighthouse, or third-party services like Sentry to monitor performance.

What is React Profiler and how do I use it?

React Profiler is a built-in tool that helps you measure the performance of your React components. You can use it by wrapping your components with the Profiler component and providing a callback to log performance data.

Can you give me an example of how to implement the Profiler?

Sure! Here's a simple example:

import { Profiler } from 'react';

const onRender = (id, phase, actualDuration) => {
  console.log(`Rendered ${id} during ${phase} phase. Duration: ${actualDuration}ms`);
};

<Profiler id="MyComponent" onRender={onRender}>
  <MyComponent />
</Profiler>

What other tools can I use for performance monitoring?

In addition to React Profiler, you can use Google Lighthouse for auditing performance, and services like Sentry or New Relic for real-time monitoring and error tracking.