What are some effective error handling techniques in Node.js?

What are some effective error handling techniques in Node.js?

In Node.js, effective error handling techniques include using try-catch blocks, handling promise rejections, and using middleware for centralized error handling.

Can you explain how to use try-catch blocks for error handling?

Sure! You can wrap your code in a try block, and if an error occurs, it will be caught in the catch block. This allows you to handle the error gracefully.

What about handling errors in asynchronous code?

For asynchronous code, you can use try-catch with async/await, or handle errors in the .catch() method of promises.

How can I implement centralized error handling in an Express app?

In an Express app, you can create an error-handling middleware function that takes four parameters: err, req, res, and next. This function can be used to log errors and send a response.