Release tracking

[primer]

This PR was opened by the Changesets release GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.

Releases

@primer/react@38.19.0

Minor Changes

• #7677 c1a81b1 Thanks @TylerJDev! - AnchoredOverlay: Add Popover API to AnchoredOverlay (behind primer_react_css_anchor_positioning feature flag)

Patch Changes

• #7638 f04e85d Thanks @iansan5653! - Update internal implementations of combined refs to improve performance and add support for React 19 callback refs

• #7695 780fc3d Thanks @mattcosta7! - perf(ThemeProvider): Reduce unnecessary renders and effect cascades

  • Replace useState + useEffect SSR hydration handoff with useSyncExternalStore — eliminates post-hydration re-render
  • Replace useState + useEffect in useSystemColorMode with useSyncExternalStore — eliminates effect gap and stale-then-update flicker
  • Cache getServerHandoff DOM read + JSON.parse per ID (runs once, not on every call)
  • Memoize context value object to prevent unnecessary re-renders of all consumers

@primer/styled-react@1.0.5

Patch Changes

• #7695 780fc3d Thanks @mattcosta7! - perf(ThemeProvider): Reduce unnecessary renders and effect cascades

  • Replace useState + useEffect SSR hydration handoff with useSyncExternalStore — eliminates post-hydration re-render
  • Replace useState + useEffect in useSystemColorMode with useSyncExternalStore — eliminates effect gap and stale-then-update flicker
  • Cache getServerHandoff DOM read + JSON.parse per ID (runs once, not on every call)
  • Memoize context value object to prevent unnecessary re-renders of all consumers

[github-actions]

❗ Pre-merge checklist

Please ensure these items are checked before merging:

🔎 Smoke test

• All CI checks pass on this pull request
• Docs and Storybook open in a browser

🌏 Integration tests

• Successful integration test with github/github-ui as a primary consumer of primer/react (automated pull request)
  • Verify all CI checks have passed on automated pull request
  • Manually test critical paths in preview
  • Manually test release-specific bugfixes and/or feature work as described in preview

✅ Peer Review

• Create release review issue for Issues team (example)
• Wait for approval from Issues team before merging

🤔 Sanity test

• All bugfixes in this release have resolved their corresponding issues
• The issues for any reverted PRs have been re-opened and commented on with a link to the reverted PR
• No noticeable regressions have been introduced as a result of changes in this release
• Release notes accurately describe the changes made

❗ Post-merge checklist

Please ensure these items are checked after merging:

🚢 Version upgrade, cleanup, and documentation

• Upgrade @primer/react version at github/github-ui
• Close Integration test PR and delete branch
• Leave a /short-report comment on quarterly release conductor tracking issue summarizing time spent on release activities and any challenges encountered
• Leave any testing notes on the automated per-shift release tracking issue. In particular, describe any issues encountered during your testing. This is helpful in providing historical context to the next release conductor as well as other maintainers.

[github-actions]

⚠️ Action required

👋 Hi, this pull request contains changes to the source code that github/github-ui depends on. If you are GitHub staff, test these changes with github/github-ui using the integration workflow. Check the integration testing docs for step-by-step instructions. Or, apply the integration-tests: skipped manually label to skip these checks.