Could you share an example library or framework that allows a programming model similar to what they demonstrate in the video? I'd like to learn more.

I am aware of frameworks that can pass information around in similar ways, but only with a lot more ceremony of the sort that's not necessarily a benefit. Observe specifically the code blocks with "search" that react to events without needing to be connected in any direct way with event production; and event production doesn't need to involve data structures or storage.

Maybe this model won't work in applications of meaningful scale, but maybe it will.