What are the best practices for handling errors in asynchronous programming?

What are the best practices for handling errors in asynchronous programming?

In asynchronous programming, it's crucial to handle errors effectively to avoid unhandled promise rejections. Some best practices include using try-catch blocks with async/await, handling errors in promise chains with .catch(), and using centralized error handling middleware in frameworks like Express.

Can you explain how try-catch works with async/await?

Sure! When you use async/await, you can wrap your await calls in a try block. If an error occurs, it will be caught in the catch block, allowing you to handle it gracefully.

What about error handling in promise chains?

In promise chains, you can attach a .catch() method at the end of the chain. This method will catch any errors that occur in the preceding promises, allowing you to handle them in one place.

Are there any tools or libraries that can help with error handling?

Yes, libraries like 'async.js' and 'bluebird' provide utilities for better error handling in asynchronous code. Additionally, using logging libraries can help track errors effectively.