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aaronpk_tv
Just published two minimal packages to help building micropub applications!
The first one is called micropub-parser and it's basically a port from @aaronpk's pk3-micropub package to JavaScript.
The second one is a small IndieAuth middleware that can be easily plugged into an Express.js app!
With a use of cross-platform authenticators this should not be much of a problem. You use a YubiKey to log into your site and in the admin panel there would be a button that enrolls your platform authenticator too. I think I saw something like this in the spec’s GitHub issues, can’t remember where exactly.