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"render" function throws "reactRender is not a function" with react 19-rc

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#550 16 comments 20 reactions 0 assignees View on GitHub

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
52/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
react, typescript
Domain
frontend

Research direction

Start with src/React/render.ts and compare its createRoot import with the React 19 upgrade guide linked in the issue. Reproduce the render call with React 19 RC, then verify that the React 19 path no longer falls back to legacyRender and that rendering succeeds.

Written by the indexing model from the issue text.

Description

Hi everyone, I'm currently working on a project testing the new release candidate version of react 19. I noticed that when calling the render function defined here it throws the error reactRender is not a function. It looks like createRoot is not found when used with react 19-RC and this leads to use the legacyRender that of course will not work.
I suspect there's some problem related on how createRoot it's imported, here the official reference from react where it's imported from react-dom/client and not from react-dom.
Thanks in advance for the support!

Dominant language
TypeScript
Stars
670
Forks
205
Avg merge
15d 17h
Merged PRs (30d)
6

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