out.txt

[ 'create',
  'add',
  'add',
  'before',
  'go',
  'before',
  'done',
  'after',
  'after' ]
ok

test.js

var common = require('../common');
var EventEmitter = require('events').EventEmitter;
var assert = require('assert');

var handler_log = [];
var handlers = {
  create: function () {
    handler_log.push('create');
  },
  before: function () {
    handler_log.push('before');
  },
  after: function () {
    handler_log.push('after');
  },
  error: function () {
    handler_log.push('error');
  },
  add: function () {
    handler_log.push('add');
  },
  remove: function () {
    handler_log.push('remove');
  }
};

var observer = EventEmitter.addObserver(handlers);
var ee = new EventEmitter();
EventEmitter.removeObserver(observer);

ee.on('done', function () {
  // this event should run without observers
  handler_log.push('done');
});

ee.on('go', function () {
  handler_log.push('go');
  ee.emit('done');
});

ee.emit('go');

console.log(handler_log);
console.log('ok');