How can I implement global error handling in a React application?

How can I implement global error handling in a React application?

You can implement global error handling in React using Error Boundaries. They catch JavaScript errors in their child component tree.

Can you show me a code example of how to set up an Error Boundary?

Sure! Here's a simple example:

class ErrorBoundary 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 Error Boundary:', error, info);
  }

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

You can wrap your components with this ErrorBoundary to catch errors.

What should I do when an error is caught?

When an error is caught, you can log it, show a fallback UI, or even send the error details to an error tracking service.

Is there a way to handle errors globally without using Error Boundaries?

Yes, you can use a global error handler with libraries like Redux or context API to manage error states across your application.