Node: Event-Driven Architecture, exploring .EventEmitter() method.

node-events.js

// Require core events
let events = require('events');

// Create Event Callback
let listenerCallback = (data) => {
    console.log('Celebrate ' + data);
}

// Init EventEmitter method
let myEmitter = new events.EventEmitter();
myEmitter.on('celebration', listenerCallback);
myEmitter.emit('celebration', 'good times, come on!');