node.js Timer module

Timer.js

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

// EMitter
function Timer(interval)
{
  var that = this;
  var _interval = interval;
  this.getInterval = function(){
    return _interval;
  }
  this.setInterval = function(interval){
    _interval = interval;
  }

  setInterval(function(){
    that.emit('tick');
  }, _interval);  
}
util.inherits(Timer, EventEmitter);

module.exports = Timer;