How can I use EventEmitter in Node.js?

How can I use EventEmitter in Node.js?

You can use EventEmitter to handle events in Node.js. First, you need to require the 'events' module and create an instance of EventEmitter.

Can you show me a simple example?

Sure! Here's a basic example:

const EventEmitter = require('events');

const myEmitter = new EventEmitter();

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

myEmitter.emit('event');

What are some common use cases for EventEmitter?

Common use cases include handling asynchronous events, managing custom events in applications, and creating modular code.

Are there any performance considerations I should be aware of?

Yes, while EventEmitter is efficient, excessive event listeners can lead to memory leaks. Always remove listeners when they're no longer needed.