Use Propeller Hat with johnny-five

I don't believe there's a Firmata build for the Parallax Propeller, so you'd have to start by writing one. Firmata is the firmware that runs on Arduino boards to give johnny-five control over their features.

It's probably not the answer you're looking for, but despite a lot of apparent interest in Firmata for the Parallax Propeller, nobody seems to have actually written an implementation for it.