How do I use try-catch in Express.js?

How do I use try-catch in Express.js?

You can use try-catch blocks in your route handlers to catch errors. Here's a simple example:

app.get('/api/data', async (req, res) => {
    try {
        const data = await getData();
        res.json(data);
    } catch (error) {
        res.status(500).json({ message: 'Internal Server Error' });
    }
});

What happens if an error occurs outside of a try-catch?

If an error occurs outside of a try-catch block, it will not be caught, and Express will return a default error response. You can use middleware to handle such errors globally.

Can I use try-catch with middleware?

Yes, you can use try-catch in middleware as well. Just ensure that you call next(error) in the catch block to pass the error to the next error-handling middleware.

What are some best practices for error handling in Express?

Some best practices include using centralized error handling middleware, logging errors, and sending user-friendly error messages.