Yes, that's correct, thank you for helping explain things! :)
What this author is providing is a similar and all-in-one npm solution for the above. Also has use-cases outside of secure runtime environments...
I'd like to ask for your advice, I'm at cris@dosycorp.com .... Would you be uninterested in discussing over email?
Well, I'm hearing you right, then this (BG) is definitely a potential solution for your problem. I think it would be lighter weight than Guac since it only runs a browser (not a whole desktop).
My email is cris@dosycorp.com ... Would you be unwilling to talk more?