How do I handle errors in Node.js using async/await?

How do I handle errors in Node.js using async/await?

You can use try-catch blocks to handle errors in async functions. Here's a simple example:

async function fetchData() {
    try {
        const response = await fetch('https://api.example.com/data');
        const data = await response.json();
        return data;
    } catch (error) {
        console.error('Error fetching data:', error);
    }
}

What happens if I don't use try-catch?

If you don't use try-catch, any error thrown in the async function will result in a rejected promise, which can lead to unhandled promise rejections.

Can I handle multiple errors differently?

Yes, you can check the type of error in the catch block and handle different errors accordingly. For example:

catch (error) {
    if (error instanceof TypeError) {
        console.error('Type error occurred:', error);
    } else {
        console.error('An error occurred:', error);
    }
}

Are there any libraries that can help with error handling?

Yes, libraries like express-async-errors for Express.js can help manage async errors more gracefully.