EventEmitter vs Promises in Node.js

Can you explain the difference between EventEmitter and Promises in Node.js?

Sure! EventEmitter is used for handling events and allows you to subscribe to and emit events, while Promises are used for handling asynchronous operations and represent a value that may be available now, or in the future, or never.

When should I use EventEmitter instead of Promises?

You should use EventEmitter when you need to handle multiple events or when the order of events matters. Promises are better for single asynchronous operations where you want to handle success or failure.

Can you give me an example of using EventEmitter?

Certainly! Here's a simple example: you can create an EventEmitter instance, then use on to listen for an event and emit to trigger it. For instance, emitter.on('data', callback) and emitter.emit('data', data).

What about using Promises? How does that work?

With Promises, you create a new Promise and define what happens in the resolve and reject functions. You can then use .then() to handle the resolved value and .catch() for errors.