Add support for React 19

[andrebrito16]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and discussions and couldn’t find anything (or linked relevant results below)

Affected package

react-markdown@8.0.7

Steps to reproduce

Use react-markdown on latest NextJs version with React 19.

Then run next build --turbopack

Actual behavior

./node_modules/.pnpm/react-markdown@8.0.7_@types+react@19.1.8_react@19.1.0/node_modules/react-markdown/lib/complex-types.ts:25:25
Type error: Namespace 'global.JSX' has no exported member 'IntrinsicElements'.

Expected behavior

Build success without errors.

Runtime

No response

Package manager

No response

Operating system

No response

Build and bundle tools

No response

[ChristianMurphy]

Update react-markdown to latest this has already been fixed.

[ChristianMurphy]

Duplicate of #911

[github-actions]

Hi! This was closed. Team: If this was fixed, please add phase/solved. Otherwise, please add one of the no/* labels.

[github-actions]

Hi! Thanks for taking the time to contribute!

Because we treat issues as our backlog, we close duplicates to focus our work and not have to touch the same chunk of code for the same reason multiple times. This is also why we may mark something as duplicate that isn’t an exact duplicate but is closely related.

Thanks,
— bb

[github-actions]

Hi team! It seems this post is a duplicate, but hasn’t been marked as such. Please post a comment w/ Duplicate of #123(no final .) to do so. See GH docs for more info.

Thanks,
— bb