What are the best practices for using promises in Node.js?

What are the best practices for using promises in Node.js?

Some best practices include using Promise.all for parallel execution, handling errors with .catch(), and avoiding callback hell.

Can you explain how to handle errors in promises?

Certainly! You can handle errors in promises by chaining a .catch() method after your promise. This will catch any errors that occur in the promise chain.

What is the difference between Promise.all and Promise.race?

Promise.all waits for all promises to resolve, while Promise.race resolves as soon as the first promise resolves or rejects.

How can I convert a callback-based function to return a promise?

You can use the Promise constructor to wrap the callback function, resolving or rejecting the promise based on the callback's outcome.