What are some practical use cases for EventEmitter in Node.js?

What are some practical use cases for EventEmitter in Node.js?

EventEmitter is great for handling asynchronous events. Common use cases include managing user interactions, handling file uploads, and creating custom events in applications.

Can you give an example of how to implement EventEmitter?

Sure! You can create an instance of EventEmitter, define events using on(), and trigger them with emit(). Here's a simple example:

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

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

myEmitter.emit('event');

What are the advantages of using EventEmitter?

Using EventEmitter allows for a decoupled architecture, making your code more modular and easier to maintain. It also helps in managing multiple events efficiently.

Are there any limitations to using EventEmitter?

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