I wasn't aware VueJS had streaming server rendering (and I still can't find anything about it), but React has had it long before v16 via a library (https://github.com/aickin/react-dom-stream)

Apparently my google-fu was failing me. Found the docs on streaming rendering for Vue here:

https://ssr.vuejs.org/en/streaming.html

Thanks for pointing out that it has it.

yea, Vue had it in its core along time ago. Hence another downfall of react... you end up downloading tons of 3rd party packages that Vue gives you by default.