How can I handle errors in event emitters?

How can I handle errors in event emitters?

You can handle errors in event emitters by listening for the 'error' event and implementing a callback function.

Can you show me a code example?

Sure! Here's a simple example:

const EventEmitter = require('events');
const emitter = new EventEmitter();

emitter.on('error', (err) => {
    console.error('An error occurred:', err);
});

emitter.emit('error', new Error('Something went wrong!'));

What if I want to handle multiple types of errors?

You can differentiate errors by checking their properties in the error handler. For example:

emitter.on('error', (err) => {
    if (err instanceof TypeError) {
        console.error('Type error:', err);
    } else if (err instanceof RangeError) {
        console.error('Range error:', err);
    } else {
        console.error('General error:', err);
    }
});

Is there a way to prevent the process from crashing?

Yes, by handling the 'error' event properly, you can prevent the process from crashing. Just ensure you always have an error listener.