This whole presentation is a Datastar application

On keypress hooks handle navigation between slides

data-on-keydown__window="
	(evt.key == 'ArrowLeft' && previous.click())
	|| (evt.key == 'ArrowRight' && next.click())
"

Slides are simple HTML files

A Datastar request is started when a page is opened

data-on-load="@get('/watch/realtime.html')"

It sets up a watcher on the file and updates the client in real-time :)

Easy to add features like in-browser website editing