NodeJS Events

The asynchronous events that allow multiple threads to communicate.

Process Event

Events are most commonly created and sent through the NodeJS Process global.

process.on('exit')

This 'exit' in particular is saying that this event will fire before the process is about to exit.

process.on('exit', function(){
	// <insert callback function here>
})

You can make a callback function to run after this event is fired.

Triggering An Event

const { EventEmitter } = require('events'); //loading a library
const eventEmitter = new EventEmitter() // instantiating the event emitter
 
// make event and callback function
eventEmitter.on('lunch', () => {
	console.log("yum");
})
 
eventEmitter.emit("lunch"); // fire this event;