How can I handle errors in a React TypeScript application?

How can I handle errors in a React TypeScript application?

You can handle errors in a React TypeScript app using try-catch blocks, error boundaries, and custom hooks.

What are error boundaries and how do I implement them?

Error boundaries are React components that catch JavaScript errors in their child component tree. You can implement them by creating a class component with a static getDerivedStateFromError method.

Can you show me a code example of an error boundary?

Sure! Here's a simple example:

class ErrorBoundary extends React.Component {
  state = { hasError: false };

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

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

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

What about handling errors in async functions?

For async functions, you can use try-catch blocks to handle errors. Just wrap your async code in a try block and catch any errors in the catch block.