How can I handle errors in Node.js effectively?

How can I handle errors in Node.js effectively?

In Node.js, you can handle errors using try-catch blocks, error-first callbacks, or promises with .catch(). What are you working on?

I'm building an API and want to ensure it doesn't crash on errors.

For an API, consider using middleware for centralized error handling. You can catch errors in your routes and pass them to the error handler.

Can you show me an example of middleware for error handling?

Sure! Here's a simple example:

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

This will log the error and send a 500 response.

That makes sense! How do I test if my error handling works?

You can simulate errors in your routes and check if your error handler responds correctly. Use tools like Postman to send requests that trigger errors.