How do error handling mechanisms differ between Express and Koa?

How do error handling mechanisms differ between Express and Koa?

In Express, error handling is done using middleware functions, while Koa uses async functions and try-catch blocks.

Can you give me an example of error handling in Express?

Sure! In Express, you can define an error-handling middleware like this:

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

What about Koa? How would I handle errors there?

In Koa, you can use a try-catch block in your middleware:

app.use(async (ctx, next) => {
  try {
    await next();
  } catch (err) {
    ctx.status = err.status || 500;
    ctx.body = 'Internal Server Error';
  }
});

Which framework do you think has better error handling?

It depends on your needs! Express is straightforward with middleware, while Koa offers more flexibility with async functions.