[0.8] [ENG-5825] remix over next

[adhami3310]

almost, usable, but needs to port 404, figure out titles and such, make sure events aren't broken, and bring back sitemap, among other things

[codspeed-hq]

CodSpeed Performance Report

Merging #4984 will degrade performances by 6.67%

_{Comparing remix-over-next (b795f12) with main (7f88d9d)}

Summary

⚡ 2 improvements
❌ 1 regressions
✅ 5 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	test_get_all_imports[_complicated_page]	28.8 ms	26.6 ms	+8.06%
⚡	test_get_all_imports[_stateful_page]	3.9 ms	3.7 ms	+3.96%
❌	test_evaluate_page[_complicated_page]	45.9 ms	49.1 ms	-6.67%

[Alek99]

:)

[masenf]

still a lot more to go on this, but i like the direction.

• internal nav without breaking websocket
• support dynamic routes (and hopefully translate existing syntax)
• pre-render HTML and use hydrateRoot

In the future it would also be awesome to expose an interface for devs to specify additional dynamic routes that should be pre-rendered.

Some grunt work to get the tests passing, but i think we should try to keep this branch up to date with main and try to move over as soon as its stable and has feature parity.

It would be nice if things were implemented in a way that would allow us to support both, but that kind of refactoring work is probably not something we can prioritize over the wins from simplifying and shrinking our frontend stack, so probably makes sense to just move fast at this point and hard cut away from next.

[adhami3310]

internal nav without breaking websocket
support dynamic routes (and hopefully translate existing syntax)

i was a bit stuck on these two, the code for them was very tied to nextjs way of doing things, so help there is appreciated

pre-render HTML and use hydrateRoot

we do have an SSR option but i don't know how much it does

there are also other things:

• titles/meta tags aren't working quite the same in nextjs
• sitemap needs to be restored (Generate sitemap for dynamic deploy url #4923 should handle this)
• dynamic rendering needs to be moved off of nextjs syntax

[adhami3310]

JSX syntax to JS syntax trnasformation seems to be done (we can in theory make that its own PR)

[masenf]

reflex-chakra no longer working

  File "/Users/masenf/code/reflex-dev/reflex/.venv/lib/python3.13/site-packages/reflex_chakra/components/navigation/breadcrumb.py", line 4, in <module>
    from reflex_chakra.components.navigation.link import Link
  File "/Users/masenf/code/reflex-dev/reflex/.venv/lib/python3.13/site-packages/reflex_chakra/components/navigation/link.py", line 5, in <module>
    from reflex.components.next.link import NextLink
ModuleNotFoundError: No module named 'reflex.components.next.link'

[masenf]

🤩 🔥 🚀