Custom Node Event Emitter

custom-node-event-emitter.js

//emitter.js
const Emitter = function(){
   this.events = {}
}

Emitter.prototype.on = function(type, callback){
   this.events[type] = this.events[type] || [];
   this.events[type].push(callback);
}

Emitter.prototype.emit = function(type, data){
  if(this.events[type]){
    this.events[type].forEach(callback => {
      callback(data);
    })
  }
}

module.exports.Emitter = Emitter;

index.js

//index.js
const { Emitter } = require('./Emiiter');

const emitr = new Emitter();

emitr.on('customEvent', function(data){
   console.log('Holla, data is: ',data);
});

for(let i = 0; i < 3; i++){
  emitr.emit('customEvent', {
    name: 'maxBigBudget',
    valueI: i
  });
}