gah.js

var EventEmitter = require('events').EventEmitter;

function Clock() {

  var self = this;

  this.getTime = function() {
    console.log("In getTime()");
    setInterval(function() {
        self.emit('time', self.getTime);
        console.log("Event Emitted!!");
    }, 1000);
  };
}

Clock.prototype = EventEmitter.prototype;
Clock.prototype.constructor = Clock;
Clock.uber = EventEmitter.prototype;

function fromMethod(method, callback) {
  return function() {
    var args = Array.prototype.slice.call(arguments);
    var sourceMethod = args.pop();
    if (sourceMethod instanceof Function && sourceMethod === method) {
      callback.apply(null, args);
    }
  }
}

var timer = new Clock();

timer.on("time", fromMethod(timer.getTime, function() {
  console.log(new Date());
}));

timer.getTime();