also, it's more like skia, a low-level "drawing" thing, on which gecko/servo (engines) depend on - and webkit/blink could too (in theory)
and finally, this project has nothing to do with webpages, it's about being able to quickly develop GUI applications using familiar technologies.
1. it's node.js library so you can use anything from npm and you can use any nodejs tools, debuggers, profilers, etc. 2. you can use react & react libraries/devtools (vue in future) 3. there's flexbox 4. subset of css (no cascading & there will be some minor differences) 5. hot-reload
so I would put this somewhere between electron & flutter