I’m the creator of hyperscript and I’m happy to answer questions. I know it isn’t going to be everyone’s cup of tea, it’s probably even more divisive than htmx, which I designed it to complement.

The big idea is a higher level and more expressive scripting language than js that embeds cleanly inline in html. It has integrated css query literals, relative location expressions (e.g. add .foo to the next .bar) and probably its most interesting feature, it resolves promises in the runtime so script writers don’t have to:

https://hyperscript.org/docs/#async

The syntax is based on HyperTalk, the scripting language for HyperCard, which was one of the first programming environments I used when I was young.

Again, not for everyone but I enjoy using it and intend on getting it to 1.0 this summer after I get htmx 2 out the door.