luvmonkey program that does not exit

doesnotexit.js

var Timer = require('uv').Timer;

function foo() {
	var timer = new Timer();
	timer.start(1000, 0, function(err) {
		f.send("ok");
		f.close();
	})
	var r = yield;
	print("got " + r);
	yield;
}

var f = foo();
f.next();
print("started");