Any consideration on sharing the unminified code? I was a bit curious to read through the code and it seems like such a shame to keep it obfuscated. From a quick perusal, it seems like the bulk of the code comes from howler.js (a sound library), and the core functionality is conveniently implemented below the mobile template.
Online unminifier doesn’t work? E.g. https://www.unminify2.com/
Looks like a simple exponential drag/sprint-return simulation using requestAnimationFrame.
Here is AI's implementation. https://jsfiddle.net/z0or7d2y/1/
Of course! https://github.com/gregsadetsky/boing