What are some use cases for Node.js Event Emitters?

What are some use cases for Node.js Event Emitters?

Node.js Event Emitters are great for handling asynchronous events. Common use cases include managing user interactions, handling file uploads, and implementing real-time notifications.

Can you give me an example of how to use an Event Emitter?

Sure! You can create an Event Emitter instance and listen for events like this:

const EventEmitter = require('events');
const myEmitter = new EventEmitter();

myEmitter.on('event', () => {
  console.log('An event occurred!');
});

myEmitter.emit('event');

What are the benefits of using Event Emitters?

Event Emitters promote a decoupled architecture, making your code more modular and easier to maintain. They also help manage asynchronous operations effectively.

Are there any limitations to using Event Emitters?

Yes, one limitation is that they can lead to memory leaks if event listeners are not properly removed. It's important to manage listeners carefully.