Node VM waiting for event listeners to fire

vm-events.js

var vm = require("vm"),
    util = require("util"),
    events = require("events");

var fooClass = function(){};
util.inherits(fooClass, events.EventEmitter);

fooClass.prototype.run = function(){
    this.emit('myevent', "Hello!");
};

var context = {
    Foo: fooClass,
    console: console
};

var code = "var foo = new Foo(); foo.on('myevent', function(data){ console.log(data); }); foo.run();";

vm.runInNewContext(code, context);