Convert node webkit app to standalone nodes app

There is a nodjs app:

https://github.com/STIXProject/stix-viz

It runs with node webkit. Is there a way to have this app run as a standalone webpage accessible through the browser and not a desktop app?

How would you build this as a nodjs app?

I tried:

nw.exe foldername

but no luck, as well as installed node and mime via

npm install mime

via wwjdm