What are the best practices for error handling in routing libraries?

What are the best practices for error handling in routing libraries?

When handling errors in routing libraries, it's essential to provide clear error messages, log errors for debugging, and ensure that the user experience is not disrupted. You should also consider using middleware for centralized error handling.

Can you give me an example of centralized error handling?

Sure! In Express.js, you can create a middleware function that catches errors and sends a standardized response. For example:

app.use((err, req, res, next) => {
  console.error(err.stack);
  res.status(500).send({ error: 'Something went wrong!' });
});

What should I do if I encounter an unhandled promise rejection?

For unhandled promise rejections, you should add a global handler using process.on('unhandledRejection', ...) to log the error and prevent the application from crashing. It's also a good idea to review your code to ensure all promises are properly handled.

Are there any tools that can help with error tracking?

Yes, tools like Sentry, Rollbar, and LogRocket can help you track errors in real-time, providing insights into the issues your application faces.