Is there something wrong with the jslint CLI?
The installation is very simple on Debian. The following commands assuming you are using apt as a package manager and that you are logged in as root.
apt install nodejs
npm install -g jslint
With https://whereby.com/ you can provide video meetings in the browser. Your attendees just need to visit your custom link to whereby.
You can also share your screen and for small teams (up to 4 attendees) it is gratis.
This is not a code library but a software recommendation. Anyway, i hope this helps.