How do I use EventEmitter in Node.js?

How do I use EventEmitter in Node.js?

You can use the EventEmitter class from the 'events' module. First, require it in your file.

Can you show me a simple example?

Sure! Here's a basic example:

const EventEmitter = require('events');

class MyEmitter extends EventEmitter {}

const myEmitter = new MyEmitter();

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 user interactions, and creating custom event-driven architectures.

Is there a limit to the number of listeners I can add?

Yes, by default, Node.js allows up to 10 listeners for a single event. You can increase this limit using the setMaxListeners method.