How can I handle async errors in Express.js middleware?

How can I handle async errors in Express.js middleware?

You can use a try-catch block within your async middleware functions to catch errors. Alternatively, you can create a custom error-handling middleware.

Can you show me an example of that?

Sure! Here's a simple example:

app.use(async (req, res, next) => {
    try {
        // Your async code here
        await someAsyncFunction();
        next();
    } catch (error) {
        next(error); // Pass the error to the error-handling middleware
    }
});

What if I want to handle errors globally?

You can define a global error-handling middleware at the end of your middleware stack:

app.use((err, req, res, next) => {
    res.status(500).json({ message: err.message });
});