What are some effective error handling techniques in MERN stack?

What are some effective error handling techniques in MERN stack?

In the MERN stack, effective error handling techniques include using try-catch blocks, centralized error handling middleware, and logging errors.

Can you explain how to implement centralized error handling middleware?

Sure! You can create a middleware function that catches errors and sends a standardized response. Here's a basic example:

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

What about handling errors in the frontend?

In the frontend, you can use error boundaries in React to catch errors in the component tree. You can also handle errors from API calls using .catch() in your promises.

Are there any libraries that can help with error handling?

Yes, libraries like express-async-errors for Express and axios interceptors for handling HTTP errors can be very helpful.