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[0.88] Sync React 19.3.0 and required Fabric UIManager export #1408
Requesting the React 19.3.0 sync for the 0.88 release. Please pick the commits in this order:
73a76ddced2088d925809432fd6b0503f239dbfe (#58398)
b0b71421c1964e046ba2ad156669c7d32e4c538f (#58446)
#58398 is a required runtime prerequisite that is not present on 0.88-stable. The React 19.3 Fabric renderer imports react-native/react-private-interface and dereferences fabricUIManager during module initialization. Without #58398, that property is undefined and renderer initialization fails. The prerequisite exposes the existing Fabric UIManager proxy through the private interface.
I reviewed the contiguous commits after the sync on main. None is a corrective fix required by the React 19.3 update:
#58447 only enables previously guarded Fantom tests.
#58450 separately enables EventTarget-based event dispatch by default; the synced renderer retains the legacy path, so this behavior rollout is not required for correctness.
#58399, #58452, #58454, and #58455 remove bindings, forwarding modules, globals, and getters that the new renderer no longer consumes.
I also reviewed #58443, which landed before the sync. It aligns the FabricUIManager Flow interface and cached-property list with the native binding, but it is not a runtime prerequisite: the existing proxy explicitly falls back to the original native object for uncached properties, and the 0.88 native binding already provides the methods used by the new renderer.
A three-way application check against current origin/0.88-stable shows #58398 applying cleanly. The sync has expected content conflicts only in packages/rn-tester/package.json and private/helloworld/package.json, where the release branch contains 0.88.0-rc.0 version stamps and main contains development versions. The React 19.3 dependency updates should be applied while retaining the 0.88 release version stamps.
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These are the criteria we follow when accepting or rejecting a code change into a React Native release branch (source).
If your Pick Request does not satisfy the criteria below, please close it as it will not be considered.
✅ Which Pick Requests we accept
✅ Fixes for regressions to core APIs. Examples:
A core component is behaving differently between versions 0.X and 0.X-1
The TurboModule.getEnforcing function is throwing an unexpected assertion error.
✅ Fixes to bugs in core React Native. Examples:
Breakpoints in React Native DevTools not working correctly in the debugger
Fast Refresh not working as expected
Metro bundler not starting properly or ignoring the configuration file
Buttons that are not clickable
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An API used by react-native-macos is not behaving as expected or is regressing
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Bump Gradle from 8.11.0 to 8.11.1
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A bugfix that contains a refactoring, resulting in changes to the public API of a class
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Bump Gradle from 8.11.0 to 8.12.0
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If your Pick Request is too complex to apply to the release branch, it will be rejected.
❌ Any non-critical improvement that landed on main.
These will generally ship in the following version unless they fit one of the criteria above.
❌ Any Pick Request considered a "nice to have".
Even one-line changes carry a risk of destabilizing and further delaying the release.
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ℹ️ Limit your Pick Request to one commit from main, or one PR against the release branch.
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Activity
github-actions commentedon Sep 11, 2026
Thank you for opening a new React Native Pick Request.
These are the criteria we follow when accepting or rejecting a code change into a React Native release branch (source).
If your Pick Request does not satisfy the criteria below, please close it as it will not be considered.
✅ Which Pick Requests we accept
TurboModule.getEnforcingfunction is throwing an unexpected assertion error.react-native-macosis not behaving as expected or is regressingReactRootView.java) if it is causing a breaking change for the React Native ecosystem.❌ Which Pick Requests we don't accept
ℹ️ What makes for a good Pick Request
In order for your Pick Request to be considered, please do the following:
main, or one PR against the release branch.fabriziocucci commentedon Sep 14, 2026
Picked manually into
0.88-stable.