Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53428
Changelog: [internal]
This is the last method in `PerformanceObserver` to implement. For some reason we never added it, even though it was trivial.
Reviewed By: rshest
Differential Revision: D80717237
fbshipit-source-id: ae3bd243d0f3f0fe4f0705437d78d14c532515f7
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53427
Changelog: [internal]
Migrate the imported types to the globally defined ones, so we follow the good practice of only accessing the public API in Fantom tests.
Reviewed By: rshest
Differential Revision: D80807160
fbshipit-source-id: 77d792b56b53c8da8409dd9133cd111afb8084f1
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53630
These JavaScript apis were a part of react native's legacy architecture. Let's deprecate them, so that we can eventually remove them in the future.
Changelog: [General][Deprecated] - Deprecate legacy javascript react native apis
Reviewed By: cortinico
Differential Revision: D81795732
fbshipit-source-id: 0a2bd142fa7e08c1f3daaa437ee127a2156e045b
Summary:
This PR falls back to UIScreen when windowScene is not available.
<img width="500" alt="CleanShot 2025-08-28 at 14 30 59@2x" src="https://github.com/user-attachments/assets/9dda3153-dfe7-48a5-9d0e-5416c2e34c64" />
## Changelog:
[IOS] [FIXED] - Simplify RCTAlertController, don't create additional UIWindow
Pull Request resolved: https://github.com/facebook/react-native/pull/53500
Test Plan:
Open the alert multiple times to check if everything works as expected.
Rollback Plan:
Reviewed By: javache
Differential Revision: D81410450
Pulled By: cipolleschi
fbshipit-source-id: c27ea98d9e811c2f259f0ff3c6689482d116c418
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53578
Changelog: [Internal]
Adds a new preprocessor directive which should be set when the new Hermes is being used. This directive will disable the legacy debugger which isn't supported by it.
Reviewed By: cipolleschi, cortinico
Differential Revision: D81035112
fbshipit-source-id: b30ae348b3419ec2d064dfe7f91c9d664a66f5cf
Summary:
Follow-up to https://github.com/facebook/react-native/issues/53194
This wasn't previously visible in testing without prebuilds and without a release build. This doesn't show up in debug builds.
When testing more against paths that contain spaces, I noticed that release builds can still run into trouble due to the use of `execSync` without escaping paths. While, in other scripts that aren't used in user-projects (afaict), we often escape with quotes and rely on `execSync` calling the shell (due to its `shell: true` default), in some scripts we don't have quote escapes.
That said, since paths could in theory contain quotes, adding quotes wouldn't be sufficient. Instead, since the affected `tar` calls are really trivial, we can instead use `spawnSync` with the `shell: false` default, which escapes arguments automatically.
## Changelog:
[IOS] [FIXED] - fix Node scripts related to prebuilt tarball extraction for paths containing whitespaces
Pull Request resolved: https://github.com/facebook/react-native/pull/53540
Test Plan: - Create a project in a folder `with spaces` and build a release build
Reviewed By: cipolleschi, cortinico
Differential Revision: D81406841
Pulled By: robhogan
fbshipit-source-id: 08bb06b2cd2b15dc17c2f95fab9024129deca6f3
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53367
We are missing a dependency in the React-jsinspector podspec that prevents React Native from building with dynamic frameworks.
## Changelog:
[Internal] -
Reviewed By: cortinico
Differential Revision: D80619664
fbshipit-source-id: 1c87ef4d3614ceea3a23196831479ecae0a5acc8
Summary:
Resolves https://github.com/facebook/react-native/issues/53501
This is a pretty major oversight of (presumably) the old autolinking refactor. The iOS autolinking's second stage, invoked in `use_react_native!` does not accept the `react-native-config` sub-command's `react-native-config` output. This is only invoked and used in the prior step, `use_native_modules`.
The second step instead invokes old code that does something _similar_ to the new autolinking in `scripts/generate-artifacts-executor`, and happens to align in most cases. (But it does "autolinking" from scratch). tl;dr: When the results don't match up, things go wrong.
Instead, we now write the autolinking (react native config) results to a file, then read the output back in the second step.
This doesn't affect Android/Gradle, which are implemented correctly.
## Changelog:
[IOS] [FIXED] - Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source
Pull Request resolved: https://github.com/facebook/react-native/pull/53503
Test Plan:
- See https://github.com/facebook/react-native/issues/53501 for failing repro
- Clone for working repro: https://github.com/byCedric/react-native-codegen-ios-autolinking/tree/fix-54503
- Note: Contains this PR's changes as a patch
- `bun install`
- `bun expo run:ios`
Reviewed By: cortinico
Differential Revision: D81490755
Pulled By: cipolleschi
fbshipit-source-id: eefe786a116404f4ed24bd7125dfb108a811f71e
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53560
Since Gradle 9.0, all the projects in the path must have an existing folder.
As we build :packages:react-native:ReactAndroid, we need to declare the folders
for :packages and :packages:react-native as well as otherwise the build from
source will fail with a missing folder exception.
Changelog:
[Android] [Fixed] - Fix build from source due to missing folder error on Gradle 9.0
Reviewed By: fabriziocucci
Differential Revision: D81482789
fbshipit-source-id: 609b503755486e10060a0f321bd0a38bd71864a1
Summary:
bypass-github-export-checks
OSS release infrastructure for the (experimental) React Native DevTools standalone shell.
Currently, binaries are built continuously on Meta infra and served from the Meta CDN using fbcdn.net URLs checked into a DotSlash file in the repo, e.g.:
https://github.com/facebook/react-native/blob/15373218ec572c0e43325845b80a849ad5174cc3/packages/debugger-shell/bin/react-native-devtools#L9-L18
For open source releases we want to primarily distribute the binaries as GitHub release assets, while keeping the Meta CDN URLs as a secondary option. This PR makes the necessary changes to the release workflows to support this:
* `workflows/create-release.yml` (modified): As part of the release commit, rewrite the DotSlash file to include the release asset URLs.
* **NOTE:** After this commit, **the new URLs don't work yet**, because they refer to a release that hasn't been published. Despite this, the DotSlash file remains valid and usable (because DotSlash will happily fall back to the Meta CDN URLs, which are still in the file).
* `workflows/create-draft-release.yml` (modified): After creating a draft release, fetch the binaries from the Meta CDN and reupload them to GitHub as release assets. This is based on the contents of the DotSlash file rewritten by `create-release.yml`.
* `workflows/validate-dotslash-artifacts.yml` (new): After the release is published, all URLs referenced by the DotSlash (both Meta CDN URL and GH release asset URLs) should be valid and refer to the same artifacts. This workflow checks that this is the case.
* If this workflow fails on a published release, the release may need to be burned or a hotfix release may be necessary - as the release will stop working correctly once the Meta CDN stops serving the assets.
* This workflow will also be running continuously on `main`. If it fails on a commit in `main`, there might be a connectivity issue between the GHA runner and the Meta CDN, or there might be an issue on the Meta side.
NOTE: These changes to the release pipeline are generic and reusable; if we later add another DotSlash-based tool whose binaries need to be mirrored as GitHub release assets, we just need to add it to the `FIRST_PARTY_DOTSLASH_FILES` array.
[Internal] Mirror React Native DevTools binaries in GitHub Releases
Pull Request resolved: https://github.com/facebook/react-native/pull/52930
Test Plan:
I've added unit tests for `dotslash-utils`, `curl-utils`, and for the majority of the logic that makes up the new release scripts (`write-dotslash-release-assets-urls`, `upload-release-assets-for-dotslash`, `validate-dotslash-artifacts`).
Created a test branch and draft PR: https://github.com/facebook/react-native/pull/53147.
Locally created a release commit, simulating the create-release GH workflow:
```
node scripts/releases/create-release-commit.js --reactNativeVersion 0.82.0-20250903-0830 --no-dry-run
```
This updated the DotSlash file in the branch: https://github.com/facebook/react-native/pull/53147/commits/2deeb7e70376ee80b99f27bea4825789f22a89a3#diff-205a9ff6005e30be061eaa64b9cb50b15b0e909dd188e0866189e952655a3483
NOTE: I've also ensured that the `create-release-commit` script correctly updates the DotSlash file when running from a branch that already has a release commit - see screenshot:
<img width="1483" height="587" alt="image" src="https://github.com/user-attachments/assets/1ffd859b-e02b-483d-8067-9cc9116829a4" />
Enabled testing the create-draft-release GH workflow in the test branch using these temporary hacks:
* https://github.com/facebook/react-native/pull/53147/commits/81f334eac5147d4dbf5f6d7d627ddfa52cd197be
* https://github.com/facebook/react-native/pull/53147/commits/6d8851657629de7e0b710ed8f5dd7d0f7b9847cc
* https://github.com/facebook/react-native/pull/53147/commits/1428a8da8b9fb29c45fc33d79f311dd1fe273433
Workflow run: https://github.com/facebook/react-native/actions/runs/17426711373/job/49475327346
Draft release: https://github.com/facebook/react-native/releases/tag/untagged-c6a62a58e5baa37936e1
Draft release screenshot for posterity (since we'll likely delete the draft release after landing this):
<img width="1024" height="814" alt="image" src="https://github.com/user-attachments/assets/1900da15-48f6-4274-b29c-0ac2019d92c0" />
For obvious reasons, I've avoided actually publishing the above draft release. But I have run the `validate-dotslash-artifacts` workflow on the *current* branch to ensure that the logic is correct: https://github.com/motiz88/react-native/actions/runs/17426885205/job/49475888486
Running `node scripts/releases/validate-dotslash-artifacts.js` in the release branch (without publishing the release first) fails, as expected:
<img width="1105" height="748" alt="image" src="https://github.com/user-attachments/assets/ed23a2e2-7a31-42eb-a324-f1d50eafe2fb" />
This PR is all the infra needed ahead of the 0.82 ~~branch cut~~ infra freeze to support the React Native DevTools standalone shell, at least on the GitHub side. ~~Some minor infra work remains on the Meta side, plus some product/logic changes to the React Native DevTools standalone shell that I'm intending to finish in time for 0.82 (for an experimental rollout).~~ EDIT: All the planned work has landed; the feature is code-complete on `main` as well as in `0.82-stable` (apart from this infra change).
As a one-off, once we've actually published 0.82.0-rc.1, we'll want to have a human look at the published artifacts and CI workflow logs to ensure everything is in order. (I'll make sure to communicate this to the 0.82 release crew.) Afterwards, the automation added in this PR should be sufficient.
Reviewed By: huntie
Differential Revision: D81578704
Pulled By: motiz88
fbshipit-source-id: 6a4a48c3713221a89dd5fc88851674c1ddc6bb10
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53536
# Changelog: [Internal]
For every chunk, we already have a threshold for the number of samples captured in this chunk.
There could be really tall call stacks, where we could record hundreds of unique nodes, which makes the chunk already big enough for a CDP traffic on android.
We are adding a threshold for a number of unique nodes in a single chunk. If the chunk has a greater number of nodes recorded, it will be dispatched over CDP.
Reviewed By: huntie
Differential Revision: D81339677
fbshipit-source-id: 388d14c64c4c3f60918a8526025f79d19d397cb4
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53535
# Changelog: [Internal]
This primarily addressed the case when we have captured a Runtime Profile during the app startup. The Hermes Runtime is created on the main thread, so the first few samples will be recorded there, but then it will be moved to JavaScript thread.
Reviewed By: huntie
Differential Revision: D81339676
fbshipit-source-id: 8202ca03df54134330aa921a9a0a97816c51cea5
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53548
Add tests to View similar to D81043503, and clarify why `accessibilityElementsHidden` does not show up in the rendered component tree (because Fantom uses the Android platform for bundling, and Android does not have accessibilityElementsHidden in its BaseViewConfig.
Changelog: [Internal]
Reviewed By: rshest
Differential Revision: D81437063
fbshipit-source-id: aa10573aee686d1d650b152365607877f34f8508
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53530
Deprecate the `StyleSheet.absoluteFillObject` API in favour of `StyleSheet.absoluteFill` (functionally identical).
Secondly, refine the type definitions in our source code (and Strict TS API) from `any` → `AbsoluteFillStyle` — resolves https://github.com/facebook/react-native/issues/53470.
This will be followed with updates to our docs.
Changelog:
[General][Deprecated] - `StyleSheet.absoluteFillObject` is deprecated in favor of `StyleSheet.absoluteFill` (equivalent).
Reviewed By: yungsters
Differential Revision: D81327548
fbshipit-source-id: 2bcf14694dc1bd959419629ce717760086b80ec3
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53454
Let's deprecate all the classes that aren't used by interop or the new architecture.
Changelog: [General][Deprecated] - Deprecate all the c++ classes not used by interop, or the new architecture.
Reviewed By: arushikesarwani94
Differential Revision: D80575767
fbshipit-source-id: 1d485300cbe24260d77bbeac75fe5b839121b6c8
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53521
Make `jsi::Object` constructor explicit, so its creation is explicit and
intentional. This prevents any sad foot-gun of constructing an Object
implicitly from a Runtime, which is certainly not a JS object.
Changelog: [Internal]
Reviewed By: avp
Differential Revision: D81274439
fbshipit-source-id: 5a9d9907f9deff7625dcff9c1072eb135ab7840e
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53523
update `DisplayMetricsHolder.getWindowDisplayMetrics()` to `getScreenDisplayMetrics()`.
Where window width and height is not needed, prefer to use `screenDisplayMetrics` as with upcoming diff `windowDisplayMetrics` initialization only happen using UiContext and have potential to cause more issues if used unnecessarily.
Changelog: [Internal] Update `DisplayMetricsHolder.getWindowDisplayMetrics()` to use `.getScreenDisplayMetrics()`
---
Reviewed By: mlord93
Differential Revision: D81270196
fbshipit-source-id: 5b392d67449ddceebbc0fe81db15fa61ae44108f
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53397
This is a runtime behaviour fix and an API change to `Appearance.setColorScheme`, motivated by a user report where providing `'unspecified'` (valid) to this function would trigger an incorrect invariant throw. Furthermore, there is already a [first party use](https://github.com/facebook/react-native/blob/aec35b896053d9372ccdaf67c939b2eb216d3455/packages/react-native/Libraries/Utilities/Appearance.js#L101) where we call `Appearance.setColorScheme('unspecified')`.
**Changes**
- `Appearance.d.ts` (current public API, manual types): Fix `ColorSchemeName` type to include `'unspecified'` value, and narrow to remove nullability — aligning with existing Flow source for this type in `NativeAppearance`.
- `Appearance.js` (implementation): Fix the invariant throw by **removing it**, and instead narrowing the input type to non-nullable. Redundant work in `getState` and `getColorScheme` is removed.
Changelog: [General][Breaking] `Appearance.setColorScheme` no longer accepts a nullable value
Reviewed By: andrewdacenko
Differential Revision: D80705652
fbshipit-source-id: cf221a33447606653050d471ca2d0347ab30db81
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53514
Changelog: [Internal]
Add a way to ignore unusually early timestamps, in our example those are artificial marks to create web tracks in correct order, coming from console.timeStamp via React. These markers are ignore in RNDT on Chrome, but not excluded in perfetto.
Reviewed By: hoxyq
Differential Revision: D81246527
fbshipit-source-id: d3342036698d1607c98e5bb4273ea1a3716fcb03
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53492
Changelog: [Internal]
Goal is to simplify code and to lower the JNI payload
- Send values as `int` instead of `Double` if they are converted to `int` on the Java side
- We only have 2 optional values - all others are mandatory
Reviewed By: lenaic
Differential Revision: D81202196
fbshipit-source-id: df8b7d9e6a98e7c919de9be6a277876684f0383c
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53328
Disables the legacy performance overlay toggle from the Android DevMenu to make way for V2.
Changelog: [Internal]
Reviewed By: cortinico
Differential Revision: D79791703
fbshipit-source-id: c99ac95e2907ce978ef0c2711ad304c9a3f278ec
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53334
Adds background performance tracing options to the DevMenu based on the current background tracing state. Analyzing a trace will automatically open dev tools, navigate to the performance tab, and show the last 20 seconds of recorded performance data.
Changelog: [Internal]
Reviewed By: javache
Differential Revision: D79714164
fbshipit-source-id: 72ad4be4604c5f4e304b49877b2699be36562655
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53508
Simplify the expressions for checking a type of a container by always returning instead of falling through and returning.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D81230049
fbshipit-source-id: 02fd827462c9acf05a83bf88ed6bd0e6db55ebc8
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53507
We need this to be an unsigned value everywhere but all the API's and interfaces described this a signed number. While this doesn't make a difference in practice, it's better to explicit.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D81230050
fbshipit-source-id: 1eb914a79b9b94654cfa54c20a81ce689f79dcb9
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53490
Changelog: [Internal]
Sending individual image prefetch request on Android over JNI is causing measurable performance regression. The idea here is batch all image prefetch request for a given shadowNodeTree and then flush it all at once - **DONE** in the next change.
Another optimization we should consider is to execute the batch on `n imagePrefetchRequest` off the JavaScript thread `mqt_v_js` and instead on e.g. the UiThread (on which currently Android Image UI initiates image resource downloads)
Reviewed By: lenaic
Differential Revision: D81186916
fbshipit-source-id: f8b24e70f2ded237be96bdb973b72acbbb8b1c20
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52910
For `get/has/setProperty`, we should also be able to take in a generic
JS Value as the property key. This change adds the Value overload for
these APIs.
The default implementation will use `Reflect.get`, `Reflect.has`, and
`Reflect.set`.
Changelog: [Internal]
Reviewed By: lavenzg
Differential Revision: D79120823
fbshipit-source-id: 7e2e5ff1ca93397c549e7dd922797fe77aa97940
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53513
D62853299 introduced the `defaultValue` argument to feature flag override functions, with the intent of enabling override functions to do something like this:
```
myFeatureFlag: (defaultValueForFlag) => someCondition ? value : defaultValueForFlag
```
However, there are no current use cases for this. This particular use case can also be solved by expanding support for override functions to return `null` or `undefined` which falls back to using the default value.
Furthermore, the type system has a difficult time representing the constraints when there are non-boolean JavaScript-only overrides (which was introduced recently).
This diff removes the argument and adds support for override functions to return `null` or `undefined`.
Changelog:
[Internal]
Reviewed By: lunaleaps
Differential Revision: D81163557
fbshipit-source-id: 38876c83d51d857dbea889928248410041c5d6d7
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53519
Changelog: [Internal] - Remove empty checks on the target rects and early return for empty ScrollView rects -- aligning the implementation with v1 of VirtualView
Reviewed By: yungsters
Differential Revision: D81247994
fbshipit-source-id: 4fda9f90e18d736944fe4236a4b79f0681e1564c
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53518
Changelog: [Internal] - Listen to `onSizeChanged` for VirtualViewExperimental and VirtualViewContainer (ScrollView) and add more debug logs and format the virtualViewID consistently for easier grepping
Reviewed By: yungsters
Differential Revision: D81184013
fbshipit-source-id: a4314ab0f94a87e97a7d9b74696726803525c698
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53512
Noticed a lint for this so decided to change
Changelog: [Internal]
Reviewed By: christophpurrer
Differential Revision: D81159958
fbshipit-source-id: c0b4b73055de26ea089e3cdb4edb7f073bd751d5
Rubén Norte
Ramanpreet Nara
Oskar Kwaśniewski
Jakub Piasecki
Phil Pluckthun
Riccardo Cipolleschi
Nicola Corti
Moti Zilberman
Vitali Zaidman
React Native Bot
Vitali Zaidman
Ruslan Lesiutin
Pieter De Baets
Maciej Jastrzębski
Alex Hunt
Christoph Purrer
generatedunixname537391475639613
Intl Scheduler
Chi Tsai
Alan Lee
Andrew Datsenko
Sam Zhou
Devan Buggay
generatedunixname1395667395051502
Tim Yung
Luna Wei
Joe Vilches