Investigate streaming SSR approaches

[lewisl9029]

https://emotion.sh/docs/ssr

Current approach won't be compatible with streaming. The way emotion supports streaming is by outputing <style> tags next to each element, which rules out a hook api because hooks can't render elements.

[lewisl9029]

Hmm... Would it be problematic to insert the stylesheet at the end of body instead? By then all the styles used will have been cached. Not sure if it could result in partial unstyled content? Does streaming html render before the stream is read to completion? or just parse?