This is just what I need. A few months ago, SeaFile shat the bed and I just could be bothered to fix it. It's deployment is a mess - a server, then a frontend host, a reverse proxy, a database - all in one container!
So I will try this out. I was contemplating building a thing like this myself, so I can contribute fixes/features too.
Any language feature with such a long definition is a bad language feature.
The less such features, the better the language.
Thus, javascript is not a "good" language for expressing your programs.