Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52839
**Context**
Experimental V2 Performance Monitor prototype, beginning by bringing the [Interaction to Next Paint (INP)](https://web.dev/articles/inp) metric to React Native.
**This diff**
Adds and configures a `CdpMetricsReporter` class to report `InteractionEntry` live metrics over CDP via the `"__chromium_devtools_metrics_reporter"` runtime binding.
**Notes**
- Introduces a new `react/performance/cdpmetrics` package, and a listener API on `PerformanceEntryReporter` (both to avoid a `jni` dependency in `react/performance/timeline`).
Changelog: [Internal]
Reviewed By: rubennorte
Differential Revision: D78904748
fbshipit-source-id: c75971aba43d9929912b3d1dba7576c2a2342214
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52887
Syncs Reac 19.1.1 into React Native.
This commit should contains the fix for:
- React owner stack in React Native
- An issue with React holding shadow node for longer than it needed
- An issue that made `startTransition` not working with React Native.
## Changelog:
[General][Changed] - Bumped React to 19.1.1
bypass-github-export-checks
Reviewed By: cortinico
Differential Revision: D79096406
fbshipit-source-id: cbb2f846b1f08ba5ff482cfed5aaddc16df075cc
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52877
We moved the HelloWorld package from `packages`to `private` but we didn't update the path to React Native that is consumed by metro.
This change fixes this.
## Changelog:
[Internal] -
Reviewed By: huntie
Differential Revision: D78493478
fbshipit-source-id: 8795c2963dec036693a73a16c18be381f19e11c4
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52861
Changelog: [internal]
We added this mode recently to support all local Hermes variants, but this doubles the number of build type combinations which regresses test execution time and give us little benefit, so we're removing it.
Reviewed By: rshest
Differential Revision: D79080370
fbshipit-source-id: e1b536427acb98ec01edfd44829e2fef9be9b18d
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52863
Changelog: [internal]
We're seeing some issues in stress runs for Fantom tests in optimized mode, failing when compiling the bytecode with Hermes. The specific error in the Hermes compiler isn't clear, but this started failing when we changed the folders for output. It's possible that it's due to race conditions in stress runs, where multiple workers are attempting to compile in the same locations.
This forces every output in every runner to be in a different file to prevent these possible collisions.
Reviewed By: rshest
Differential Revision: D79084242
fbshipit-source-id: b4540e2e6c5378c7fc8630ac2fea674e0ef78a14
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52225
## Changelog:
[Internal] - Fantom in RN CLI
This diff prepares the RN CI to build and run Fantom Tests
Reviewed By: cortinico
Differential Revision: D70097944
fbshipit-source-id: 163cb3f5204f7e5491f94f2fbebe11b514919cdf
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52831
# Changelog
[Internal] -
The corresponding `testWithArg` API is similar to the existing `test` one for the Fantom benchmarks, except it would allow to run the same test several times in a parametrized manner, with the set of parameters specified as an array (for now, of numbers).
This allows to easily implement testing patterns such as we have in a View benchmark test, whereas we have a mostly duplicated test body doing a similar thing with 100, 1000, 1500 view component instances etc.
Reviewed By: rubennorte
Differential Revision: D78970312
fbshipit-source-id: 504b7aada648c7213ce698f088ac71d9fde8884b
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52828
Changelog: [internal]
Just a small quality of life improvement. It forces the test functions in benchmarks to have the name of the test case if it's an anonymous function, so it shows better in stack traces.
Reviewed By: sammy-SC
Differential Revision: D78924769
fbshipit-source-id: 9b44a49feaae93ccfa90cc726274f0ea013654b1
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52826
Changelog: [internal]
This is just an intermediate change to simplify how we format Fantom configs, so we can extend it to use other formatting formats (e.g.: short format to use in file names).
Reviewed By: lenaic
Differential Revision: D78924771
fbshipit-source-id: 4886a800a6836dc6a66539b1df079adb6c9c52e1
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52788
Changelog: [internal]
Minor change to just create a single output directory for generated JS code in Fantom per Jest run.
Reviewed By: lenaic
Differential Revision: D78808564
fbshipit-source-id: 70e1a60dfcdcc3fc6ee5f08ced1e9c8f8cab2782
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52767
Changelog: [Internal]
Currently tests that depend on hermes dev bytecode will fail because in OSS this case was not handled. We need to skip them for now before we integrate hermes compiler properly.
Reviewed By: christophpurrer, rubennorte
Differential Revision: D78750791
fbshipit-source-id: 5b55bc9acbd6ee5aad874ad57607325cb1373c2e
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52779
Changelog: [internal]
Adds validation for Fantom environment variables at runtime, to catch typos or variables that no longer have an effect.
Reviewed By: rshest
Differential Revision: D78803045
fbshipit-source-id: efb28a4f3fd6a4be35fb525d91fb093a1e88f7e4
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52766
Changelog: [internal]
Just a minor refactor so adding more logic that should work both at Meta and in OSS is easier in the next diff
Reviewed By: christophpurrer
Differential Revision: D78741904
fbshipit-source-id: 3abda5d5b7be157bf381e26dad2fd4b064a0f556
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52778
Changelog: [internal]
Jest has an option to select a specific project when running tests:
```
jest --selectProjects fantom
```
But for this to work, a `displayName` option needs to be set in the project configuration. This adds that for Fantom tests (using `fantom`).
Reviewed By: rshest
Differential Revision: D78802516
fbshipit-source-id: 483e7c1450b1f97961e4e43c963fac3ce82cee58
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52776
Changelog: [internal]
`FANTOM_FORCE_CI_MODE` is just an explicit way to indicate that we're on CI, so we'd run benchmarks in test mode, for example.
`FANTOM_DEBUG_CPP` is just an alias for `FANTOM_ENABLE_CPP_DEBUGGING` which is unnecessarily long.
Reviewed By: rshest
Differential Revision: D78801918
fbshipit-source-id: 8e60bdd911067c6b0b92be7e90553fd5209c9ca9
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52759
Changelog: [internal]
This introduces a new environment variable for Fantom to disable benchmarks (`FANTOM_FORCE_TEST_MODE`), without having to run in CI mode.
Reviewed By: rshest
Differential Revision: D78672864
fbshipit-source-id: ef445bd8b36703594658529da2436c75d5b87179
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52765
Changelog: [internal]
Reported locations for errors in Fantom is wrong, because it seems it's not ignoring "infra" frames.
This was caused by the `stack` property in `ErrorWithCustomBlame` being set on the error objects and shadowing the getter that removes the necessary frames. This fixes that by forcing that property to be deleted.
Reviewed By: christophpurrer
Differential Revision: D78747119
fbshipit-source-id: 81d6ce74041382d7582e2066409e839d28d91052
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52706
This just prepares the repo for the next branch cut.
Changelog:
[Internal] [Changed] -
Reviewed By: cipolleschi
Differential Revision: D78558445
fbshipit-source-id: 2132d560dad447b3685874438387a519587f8554
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52647
This removes the need to specify 2 Manifests for apps and we can just use the `main` manifes to toggle if `usesCleartextTraffic` should be enabled or not.
This will have to be replicated in the template repository.
Changelog:
[Android] [Added] - Add support to specify a single Manifest rather than 2 (main/debug) by using the `usesCleartextTraffic` manifest placeholder which is autoconfigured by RNGP.
Reviewed By: cipolleschi
Differential Revision: D78425139
fbshipit-source-id: 9173a014b387d5aed5f7087fa69b7bd49c220f2c
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52678
From partner feedback, there's still appetite to support Node 20.x for the next <1y of life. Lower min version to `20.19.4` (Jul 2025) and widen test matrix in CI.
Changelog:
[General][Breaking] - Our new minimum Node version is Node.js 20 (Overrides #51840)
Reviewed By: cortinico
Differential Revision: D78494491
fbshipit-source-id: c8d9dc6250cb11f8a12ca7e761b65f4a8dae9265
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52583
Changelog: [Internal]
OSS build is broken atm as there is rn-tester dep in Fantom, needed for Meta only purposes.
Platformizing code to allow for Meta only implementation here and also for OSS only. Using this approach over ifdef.
Reviewed By: christophpurrer
Differential Revision: D78275698
fbshipit-source-id: c3234bb61b4591c0a5045fdb84aa0316f6382ecc
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52601
Changelog: [internal]
Fixes a bug in Fantom when throwing a value that's not an instance of `Error` in a test.
Reviewed By: javache
Differential Revision: D78332756
fbshipit-source-id: 350479dcb7bcea399070c6851aca76a1d1cc2629
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52474
1. Enables the feature flags for fragment refs on fbsource
2. Adds a test with Fantom for usage of `FragmentInstance#observeUsing` and `FragmentInstance#unobserveUsing`.
3. Exposes the `ReactFragmentInstance` type with the common methods that are used on native. We can override the DOM only methods in www libdefs.
Changelog: [Internal]
Reviewed By: rubennorte
Differential Revision: D74326262
fbshipit-source-id: e35ee45b23179ad3ba5527763567c9b04c127eff
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52473
Shared utils that were located in the root of `scripts/` are now colocated closer to their dependencies or moved to `scripts/shared/` — simplifying the root directory layout.
Changelog: [Internal]
Reviewed By: robhogan
Differential Revision: D77873875
fbshipit-source-id: e04dba41a1ef811d32793931033fdfa93afad0cd
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52401
changelog: [internal]
- Mark ShadowNode::ListOfWeak as deprecated with appropriate deprecation message
- Replace all usages of ShadowNode::ListOfWeak with std::vector<std::weak_ptr<const ShadowNode>>
- Updated primitives.h and ReactNativeCPP.api to use the explicit type instead of the alias
This change continues the effort to remove type aliases in favor of explicit standard library types for better code clarity and maintainability.
Reviewed By: christophpurrer
Differential Revision: D77652083
fbshipit-source-id: 79cad019e039c19f661346604ff49a44a4af7a79
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52402
changelog: [internal]
Mark ShadowNode::ListOfShared as deprecated and replace most usages throughout the React Native renderer codebase with the explicit std::vector<std::shared_ptr<const ShadowNode>> type. This improves code clarity by making the container type explicit rather than relying on a type alias.
Reviewed By: christophpurrer
Differential Revision: D77651676
fbshipit-source-id: 8c4bd9b8cbbe467384b947ef9e7a4524f2053e36
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52407
Changelog: [Internal]
The sample is from an outdated approach of enabling C++ Modules in RN which is not recommended anymore.
Prefer C++ Turbo Modules if you need to expose / access C or C++ APIs in RN apps:
https://reactnative.dev/docs/the-new-architecture/pure-cxx-modules
Reviewed By: javache
Differential Revision: D77765443
fbshipit-source-id: 112fef4c1a7e1c567f3c1d471728a1dfc926adc6
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52393
## Changelog:
[General][Deprecated] - ShadowNode::Shared is now deprecated. Use `std::shared_ptr<const ShadowNode>` instead.
- Mark ShadowNode::Shared as deprecated in ShadowNode.h
- Replace all uses of ShadowNode::Shared with std::shared_ptr<const ShadowNode>.
This continues the systematic effort to remove ShadowNode type aliases in favor of explicit standard library types for improved code clarity and maintainability.
Reviewed By: christophpurrer
Differential Revision: D77650696
fbshipit-source-id: b4769e2a1e39f49d14d5927be105487ecf69fa3f
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52370
This is just a patch bump of Gradle ahead of the 0.81 branch cut.
Changelog:
[Android] [Changed] - Bump Gradle to 8.14.2
Reviewed By: fabriziocucci
Differential Revision: D77601121
fbshipit-source-id: b2fdc8b022f2ab43997f412c77e0c924c01f1a5d
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52359
This is needed ahead of the 81 branch cut.
Changelog:
[Internal] - Bump all packages to 0.81.0-main
Reviewed By: huntie
Differential Revision: D77602196
fbshipit-source-id: 1b52a7d1577783d72aba8d20f98032f29ffcc7df
Summary:
This PR connects breaking change detection with a danger bot. The action takes snapshot from main branch and from the PR as inputs to`diff-api-snapshot` (saved in runner temp directory).
## Changelog:
[Internal]
For more details, see:
https://reactnative.dev/contributing/changelogs-in-pull-requests
Pull Request resolved: https://github.com/facebook/react-native/pull/52045
Reviewed By: huntie
Differential Revision: D76735630
Pulled By: coado
fbshipit-source-id: 9208117340c1e0bf10d58b67892727717d22e62f
Summary:
This follows https://github.com/facebook/react-native/pull/47554
Compared to the initial proposal, I had to remove the `edgeToEdgeEnabled` property from the root `gradle.properties` and put it in the app `gradle.properties` instead (explaining the `AgpConfiguratorUtils.kt` / `GenerateEntryPointTask.kt` / `ProjectUtils.kt` / `PropertyUtils.kt` changes)
This PR:
- Enable edge-to-edge for `MainActivity` (when `edgeToEdgeEnabled` is set to `true`)
- Disable `StatusBar` `backgroundColor` and `translucent` (when `edgeToEdgeEnabled` is set to `true`)
- Enforce `statusBarTranslucent` and `navigationBarTranslucent` on `Modal` when edge-to-edge is enabled
- Add an `isEdgeToEdge` constant to `DeviceInfoModule` for [`react-native-is-edge-to-edge`](https://github.com/zoontek/react-native-edge-to-edge/tree/main/react-native-is-edge-to-edge) detection
## Changelog:
<!-- Help reviewers and the release process by writing your own changelog entry.
Pick one each for the category and type tags:
[ANDROID|GENERAL|IOS|INTERNAL] [BREAKING|ADDED|CHANGED|DEPRECATED|REMOVED|FIXED|SECURITY] - Message
For more details, see:
https://reactnative.dev/contributing/changelogs-in-pull-requests
-->
- [Android] [Added] - Add edge-to-edge opt-in support
Pull Request resolved: https://github.com/facebook/react-native/pull/52088
Test Plan:
- Update `enableEdgeToEdge` value in `packages/rn-tester/android/app/gradle.properties`
- Recompile
https://github.com/user-attachments/assets/4c6beb98-fa88-427c-b62d-a42ffe5330f0
Rollback Plan:
Reviewed By: cortinico
Differential Revision: D76834213
Pulled By: alanleedev
fbshipit-source-id: c39b2cff1a5e94e31306e3b35651aa2de83d2fe6
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52222
Changelog: [Internal]
Introduce environment option to force usage of OSS fantom test runner.
If env is not set - check for BUCK file in tester which is checked in for FB but not for OSS.
Reviewed By: rubennorte
Differential Revision: D77160761
fbshipit-source-id: 1701ff140ff2be1bbeacfb4305e9f89089cacb42
Devan Buggay
Alex Hunt
Riccardo Cipolleschi
Rubén Norte
Sam Zhou
Andrew Datsenko
Ruslan Shestopalyuk
Christoph Purrer
Nicola Corti
Jack Pope
Samuel Susla
Ian Childs
Dawid Małecki
Mathieu Acthernoene