I wanted to learn more about web components/custom elements, and also about how the big JavaScript meta frameworks work, so I've been doing some research into how to fit a framework together. It's not intended for use in production today, and may never be, as it's primary purpose is educational.
https://realm.codes (open on desktop, mobile is still buggy).
- you can create new element without JS - import element (cors-enabled) - and more...