How do I handle errors in React's Concurrent Mode?

How do I handle errors in React's Concurrent Mode?

In React's Concurrent Mode, you can use the ErrorBoundary component to catch errors in your component tree.

Can you show me an example of using ErrorBoundary?

Sure! Here's a simple example:

class MyErrorBoundary extends React.Component {
  constructor(props) {
    super(props);
    this.state = { hasError: false };
  }

  static getDerivedStateFromError(error) {
    return { hasError: true };
  }

  componentDidCatch(error, info) {
    console.error('Error caught in ErrorBoundary:', error);
  }

  render() {
    if (this.state.hasError) {
      return <h1>Something went wrong.</h1>;
    }
    return this.props.children;
  }
}

You can wrap your components with MyErrorBoundary to catch errors.

What happens if an error occurs outside of the ErrorBoundary?

If an error occurs outside of an ErrorBoundary, it will crash the entire React application. That's why it's important to wrap critical parts of your app with ErrorBoundary.

Are there any best practices for using ErrorBoundary?

Yes! Some best practices include:

1. Use multiple ErrorBoundaries for different parts of your app.
2. Log errors for monitoring.
3. Provide fallback UI to enhance user experience.