I have recently been interested in using HTMX, but there’s not been any activity within the WordPress community as far as I can see. I hope to change that with HTMXpress (pronounced as HTM express).
HTMX allows you to annotate dynamic script style behaviour via custom HTML properties, using progressive enhancement. Perhaps you’re familiar with Hotwire (ruby on rails) or Intercooler.js (htmx predecessor).
By using the Rewrite Endpoints API to create a custom endpoint; and a bit of custom template logic, we can output a serverside partial or custom theme template.
Using this setup, WordPress can leverage HTML over the wire solutions such as HTMX.
Currently it’s a prototype. I’ll be blogging more about progress as things go on.