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Revert upgrade to React 19.1 due to increase in runtime for tests.

I'll keep monitoring the situation and upgrade again once the root cause is clear and/or the issue is fixed.

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github-actions bot commented Mar 31, 2025

Thanks for adding a type label to the PR! 👍

@bernardobelchior bernardobelchior mentioned this pull request Mar 31, 2025
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@bernardobelchior bernardobelchior added the type: regression A bug, but worse, it used to behave as expected. label Mar 31, 2025
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mui-bot commented Mar 31, 2025

Deploy preview: https://deploy-preview-17206--material-ui-x.netlify.app/

Generated by 🚫 dangerJS against 2ebf04b

@bernardobelchior bernardobelchior marked this pull request as ready for review March 31, 2025 13:25
@bernardobelchior bernardobelchior requested review from a team, JCQuintas and LukasTy March 31, 2025 13:25
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Revert upgrade to React 19.1 due to increase in runtime for tests.

Do you have any numbers to share?

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Do you have any numbers to share?

#17192 (comment)


Maybe the culprit could actually be the new owner stack, which is supposed to be disabled on production, but test build could be treated as development, hence the drastick change. 🤔
It might be worth testing runtime difference with different ENV parameters and potentially opening issue on React side. 🤷

@LukasTy LukasTy merged commit 347f7d6 into mui:master Mar 31, 2025
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@bernardobelchior
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Revert upgrade to React 19.1 due to increase in runtime for tests.

Do you have any numbers to share?

Sorry, should have added that information! There's some of it at #17192, but since that commit was merged the tests running on React 19 are taking longer to run (around 5min per run).

@bernardobelchior bernardobelchior deleted the revert-react-19.1 branch March 31, 2025 15:58
arminmeh pushed a commit to arminmeh/mui-x that referenced this pull request Apr 1, 2025
@bernardobelchior bernardobelchior mentioned this pull request Jun 2, 2025
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5 participants