How does error handling in Express compare to other frameworks?

How does error handling in Express compare to other frameworks?

In Express, error handling is done using middleware functions. You can define an error-handling middleware that takes four arguments: err, req, res, and next. This allows you to centralize error handling and respond appropriately.

What about frameworks like Koa or Hapi?

Koa uses async functions and has a more modern approach to error handling, allowing you to use try-catch blocks directly in your routes. Hapi, on the other hand, has built-in support for error handling through its lifecycle methods, making it easier to manage errors.

Are there any advantages to using Express for error handling?

Yes, Express's simplicity and flexibility make it easy to set up custom error handling. Its middleware approach allows for a clear separation of concerns, which can lead to cleaner and more maintainable code.

Can you give an example of error handling in Express?

Sure! Here's a simple example:

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

This middleware logs the error and sends a 500 response.