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React 19 support #39180

@Schweinepriester

Description

@Schweinepriester

Preliminary Checks

Description

https://react.dev/blog/2024/12/05/react-19

Reproduction Link

https://github.com/gatsbyjs/gatsby/blob/gatsby%405.14.0/packages/gatsby/package.json#L253

Steps to Reproduce

  1. Check https://github.com/gatsbyjs/gatsby/blob/gatsby%405.14.0/packages/gatsby/package.json#L253
  2. React 19 is not matched by ^18.0.0 || ^0.0.0
  3. Probably other changes needed as well

Expected Result

React 19 is supported

Actual Result

React 19 is not supported

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Any

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No response

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status: confirmedIssue with steps to reproduce the bug that’s been verified by at least one reviewer.topic: coreRelates to Gatsby's core (e.g. page loading, reporter, state machine)type: feature or enhancementIssue that is not a bug and requests the addition of a new feature or enhancement.

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