Checked it but that won't work. This is some wrapper written in TypeScript to use very experimental stuff that almost no browser supports (badges, contacts, etc). This specific module will also interfere with how the BANano transpiler makes a PWA.
When I checked the code, I don't really see something in it that BANano couldn't do (it just won't work on most browsers). e.g. the setAppBadge:
But the code they use is pretty simple stuff like e.g. their setBadge method would basically be in BANano:
BANano.Navigator.runmethod("setAppBadge",10)
Alwaysbusy