How can I implement async error boundaries in my React app?

How can I implement async error boundaries in my React app?

You can create an async error boundary by using a class component that catches errors in its lifecycle methods. You can also use the getDerivedStateFromError method to update the state when an error occurs.

Can you show me a code example?

Sure! Here's a simple example:

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

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

  componentDidCatch(error, info) {
    // Log the error to an error reporting service
  }

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

    return this.props.children;
  }
}

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

What about handling async errors specifically?

For async errors, you can use a combination of Promises and the error boundary. You might want to handle async operations in the componentDidCatch method or use a custom hook to manage async state.

Are there any libraries that can help with this?

Yes, libraries like react-error-boundary can simplify the process of implementing error boundaries, including async error handling.