Mutation Observer API demo

A simple demo shows the MutationSummary + TreeMirror libs to de/serialize content, using socket.io to sync the data.

We also try to catch & propagate two events - scroll + click.

Demo/notes

<base> tag; handling relative path - assets/test.css in clone.html vs test-dir/clone.html
scroll event on any tag
iframe (chat box handling, ...)
differences in a font or OS UI elements rendering

npm ci
npm start

Open:

Observe mirrored page (origin) in the cloned one.

demo.mp4