FWIW, this will be part of the core library in the next version instead of a separate extension.
https://four.htmx.org/htmx-4/#built-in-streaming-response-su...
https://four.htmx.org/htmx-4/#built-in-streaming-response-su...
what is going to change is that htmx will ship with the "core" extensions (ws, sse, optimistic responses, etc.) as a single release, so they can all be composed easily together and are tested together
we'll see, still in alpha