There's very little BEEM calls left in it now. Most of the functions use the Condenser API, but with that the documentation is so abysmal I tend to struggle and so BEEM stays.. for now..
Regardless of the language it will be the same API calls.., or tell me otherwise?
I am not fluent in JS, but would not have an issue picking it up. I use Powershell all day at work, and Python when at home. One language is much like another, quirks aside.