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

var SequentialEE = function() {
    // Hash where the key is the event name and contains
    // an array of the events to be executed in the order they
    // were registered
    var events;
}

SequentialEE.prototype.on = function(eventName, function) {
    if(!this.events[eventName])
        this.events[eventName] = [];

    this.events.push(function);
}

SequentialEE.prototype.emit = function(name, data) {
    var chain = q();
    for(var key in this.events[name]) {
        var f = this.events[name][key].bind(null,name,data);
        chain.then(f);
    }
}

SequentialEE.prototype.__proto__ = EventEmitter.prototype;