How can I handle errors in a TypeScript event emitter?

How can I handle errors in a TypeScript event emitter?

You can handle errors in a TypeScript event emitter by using try-catch blocks within your event listener functions.

Can you show me an example of that?

Sure! Here's a simple example:

import { EventEmitter } from 'events';

const emitter = new EventEmitter();

emitter.on('event', () => {
    try {
        // Your code that might throw an error
        throw new Error('Something went wrong!');
    } catch (error) {
        console.error('Error occurred:', error);
    }
});

emitter.emit('event');

What if I want to emit an error event instead?

You can emit an error event by using the built-in 'error' event of the EventEmitter class. Here's how:

emitter.on('error', (err) => {
    console.error('Error event received:', err);
});

emitter.on('event', () => {
    // Simulating an error
    const error = new Error('Something went wrong!');
    emitter.emit('error', error);
});

emitter.emit('event');