What are some practical use cases for TypeScript's EventEmitter?

What are some practical use cases for TypeScript's EventEmitter?

TypeScript's EventEmitter is great for handling events in applications. Common use cases include managing user interactions, implementing pub/sub patterns, and creating custom events in frameworks.

Can you give me an example of using EventEmitter in a web application?

Sure! In a web app, you might use EventEmitter to handle form submissions. When a user submits a form, you can emit an event that triggers validation and updates the UI accordingly.

What about using it in a Node.js application?

In Node.js, EventEmitter is often used for handling asynchronous events, like file uploads or database queries, allowing you to respond to events as they occur.

Are there any performance considerations I should be aware of?

Yes, while EventEmitter is efficient, excessive event listeners can lead to memory leaks. It's important to manage listeners properly by removing them when they're no longer needed.