What are some examples of using Event Emitters in TypeScript?

Can you explain what an EventEmitter is in TypeScript?

An EventEmitter is a class in Node.js that allows you to handle events and listeners. It enables you to create custom events and manage them efficiently.

Can you provide a simple example of how to use EventEmitter in TypeScript?

Sure! Here's a basic example:

import { EventEmitter } from 'events';

class MyEmitter extends EventEmitter {}

const myEmitter = new MyEmitter();

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

myEmitter.emit('event'); // This will log: An event occurred!

What are some common use cases for EventEmitters?

Common use cases include handling user interactions, managing asynchronous operations, and creating custom events in applications.

Are there any performance considerations when using EventEmitters?

Yes, excessive use of EventEmitters can lead to memory leaks if listeners are not properly managed. Always remove listeners when they are no longer needed.