Random tangent: no need to make your own pubsub by the way. I figure you might be interested in component[1]. Makes writing libraries like oboe even easier because all of the little stuff is packaged up for you already, like emitter[2]. And then tons of the little helpers in oboe could easily be their own components and useable by others. Check out the full list[3].

[1]: https://github.com/component/component

[2]: https://github.com/component/emitter

[3]: https://github.com/component/component/wiki/Components