gistfile1.js

var obj = new ObjectThatDoesAsyncStuff(); //create object


// create some `when` checks - when these conditions are met the code in them should run
// (right after the variable has been changed, this async `if` should be run on it)
when(obj.someNumber > 10 && obj.someNumber < 20) {
	console.log('its in range! Fire the lazer!!');
}

when(obj.commandReady) {
	command = obj.takeACommand();
}

obj.doSomethingToSomeNumber(function(err){
	if(err) return console.log('error occured')

	if(obj.someNumber > 10 && obj.someNumber < 20){
	console.log('gotta do my check here! Fire the lazer!!');
	} 
})

obj.addCommandToQueue('command to add', function(err){
	if(err) return console.log('error occured')

	if(obj.commandReady) {
	command = obj.takeACommand();
	}
})


obj.addCommandToQueue = function(command, cb){
	obj.commandQueue.push(command);
	obj.commandReady = true;
	cb(null)
}

obj.takeACommand = function(command, cb){
	// you might have to do something like this because of weird 
	// observation rules on the commandReady object
	obj.commandReady = false
	if(obj.commandQueue.length > 0) obj.commandReady = true;
	return obj.commandQueue.pop()
}

obj.doSomethingToSomeNumber = function(cb){
	obj.someNumber += 11;
	cb(null)
}