to be honest. One can't really follow up on the JS part because you're not showing or linking their API-Docs.
The fucked up part with dynamic languages is that we don't get clean autocompletion with method documentation in our IDEs. So please consider linking to the docs and giving us the most important parts in the video description like good old Ryan Bates always did :)
Posted in Ruby Module Include Tracking Discussion
Rubymine has this find references feature built in. Works quite well for me.
I am constantly changing my mind wether it is better to use ruby and rails or something statically typed like go. I personally hate to dig through tons of code not knowing where something is defined because it is for example meta-generated or included where I don't expect it.