This is cool. There was an old post here about one called patchbay (IIRC) then I made one called httpubsub (go, quick and dirty).

I'm using one called ntfy.sh now; it's good; has all the use-case & app and stuff. Self hostable FTW.

I’m not super familiar with browser notifications, but I want to use them in my next project. Does this library make it easy to add push notifications to my web app similar to airship for mobile app push notifications?

There is no docs ? How can we also listen via http server ?