Migrate RNTester to use {usesCleartextTraffic} Manifest Placeholder (#52620)

Summary:
This creates a `debugOptimized` build type for React Native Android, meaning that we can run C++ optimization on the debug build, while still having the debugger enabled. This is aimed at improving the developer experience for folks developing on low-end devices or emulators.

Users that intend to debug can still use the `debug` variant where the full debug symbols are shipped.

## Changelog:

[ANDROID] [ADDED] - Create a debugOptimized buildType for Android


Test Plan:
Tested locally with RNTester by doing:

```
./gradlew installDebugOptimized
```

This is the output of the 3 generated .aar. The size difference is a proof that we're correctly stripping out the C++ debug symbols:

<img width="193" height="54" alt="Screenshot 2025-07-15 at 17 49 50" src="https://github.com/user-attachments/assets/584a0e8d-2d17-40d4-ac29-da09049d6554" />
<img width="235" height="51" alt="Screenshot 2025-07-15 at 17 49 39" src="https://github.com/user-attachments/assets/eda8f9e7-3509-4334-8c16-990e55caa04d" />
<img width="184" height="52" alt="Screenshot 2025-07-15 at 17 49 32" src="https://github.com/user-attachments/assets/a5c94385-bc00-4484-b43e-088ee039827f" />

Rollback Plan:

Reviewed By: cipolleschi

Differential Revision: D78351347

Pulled By: cortinico

.flowconfig

@@ -104,4 +104,4 @@ untyped-import
 untyped-type-import
 
 [version]
-^0.276.0
+^0.275.0

.github/actions/build-android/action.yml

@@ -4,6 +4,9 @@ inputs:
   release-type:
     required: true
     description: The type of release we are building. It could be nightly, release or dry-run
+  run-e2e-tests:
+    default: 'false'
+    description: If we need to build to run E2E tests. If yes, we need to build also x86.
   gradle-cache-encryption-key:
     description: "The encryption key needed to store the Gradle Configuration cache"
 runs:
@@ -28,11 +31,10 @@ runs:
       uses: actions/cache/restore@v4
       with:
         path: /github/home/.cache/ccache
-        key: v2-ccache-android-${{ github.job }}-${{ github.ref }}-${{ hashFiles('packages/react-native/ReactAndroid/**/*.cpp', 'packages/react-native/ReactAndroid/**/*.h', 'packages/react-native/ReactCommon/**/*.cpp', 'packages/react-native/ReactAndroid/**/CMakeLists.txt', 'packages/react-native/ReactCommon/**/CMakeLists.txt') }}
+        key: v1-ccache-android-${{ github.job }}-${{ github.ref }}
         restore-keys: |
-          v2-ccache-android-${{ github.job }}-${{ github.ref }}-
-          v2-ccache-android-${{ github.job }}-
-          v2-ccache-android-
+          v1-ccache-android-${{ github.job }}-
+          v1-ccache-android-
     - name: Show ccache stats
       shell: bash
       run: ccache -s -v
@@ -41,7 +43,11 @@ runs:
       run: |
         if [[ "${{ inputs.release-type }}" == "dry-run" ]]; then
           # dry-run: we only build ARM64 to save time/resources. For release/nightlies the default is to build all archs.
-          export ORG_GRADLE_PROJECT_reactNativeArchitectures="arm64-v8a,x86" # x86 is required for E2E testing
+          if [[ "${{ inputs.run-e2e-tests }}" == 'true' ]]; then
+            export ORG_GRADLE_PROJECT_reactNativeArchitectures="arm64-v8a,x86" # x86 is required for E2E testing
+          else
+            export ORG_GRADLE_PROJECT_reactNativeArchitectures="arm64-v8a"
+          fi
           TASKS="publishAllToMavenTempLocal build"
         elif [[ "${{ inputs.release-type }}" == "nightly" ]]; then
           # nightly: we set isSnapshot to true so artifacts are sent to the right repository on Maven Central.
@@ -57,7 +63,7 @@ runs:
       uses: actions/cache/save@v4
       with:
         path: /github/home/.cache/ccache
-        key: v2-ccache-android-${{ github.job }}-${{ github.ref }}-${{ hashFiles('packages/react-native/ReactAndroid/**/*.cpp', 'packages/react-native/ReactAndroid/**/*.h', 'packages/react-native/ReactCommon/**/*.cpp', 'packages/react-native/ReactAndroid/**/CMakeLists.txt', 'packages/react-native/ReactCommon/**/CMakeLists.txt') }}
+        key: v1-ccache-android-${{ github.job }}-${{ github.ref }}
     - name: Show ccache stats
       shell: bash
       run: ccache -s -v

.github/actions/build-hermes-macos/action.yml

@@ -15,6 +15,8 @@ runs:
   steps:
     - name: Setup xcode
       uses: ./.github/actions/setup-xcode
+    - name: Setup node.js
+      uses: ./.github/actions/setup-node
     - name: Restore Hermes workspace
       uses: ./.github/actions/restore-hermes-workspace
     - name: Restore Cached Artifacts
@@ -43,8 +45,6 @@ runs:
           echo "ARTIFACTS_EXIST=true" >> $GITHUB_ENV
           echo "ARTIFACTS_EXIST=true" >> $GITHUB_OUTPUT
         fi
-    - name: Setup node.js
-      uses: ./.github/actions/setup-node
     - name: Yarn- Install Dependencies
       if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
       uses: ./.github/actions/yarn-install

.github/actions/build-npm-package/action.yml

@@ -116,12 +116,12 @@ runs:
     - name: Print Artifacts Directory
       shell: bash
       run: ls -lR ./packages/react-native/ReactAndroid/external-artifacts/artifacts/
+    - name: Setup node.js
+      uses: ./.github/actions/setup-node
     - name: Setup gradle
       uses: ./.github/actions/setup-gradle
       with:
         cache-encryption-key: ${{ inputs.gradle-cache-encryption-key }}
-    - name: Setup node.js
-      uses: ./.github/actions/setup-node
     - name: Install dependencies
       uses: ./.github/actions/yarn-install
     - name: Build packages

.github/actions/create-release/action.yml

@@ -14,8 +14,6 @@ inputs:
 runs:
   using: composite
   steps:
-    - name: Setup node.js
-      uses: ./.github/actions/setup-node
     - name: Yarn install
       uses: ./.github/actions/yarn-install
     - name: Configure Git

.github/actions/maestro-ios/action.yml

@@ -35,8 +35,6 @@ runs:
       with:
         java-version: '17'
         distribution: 'zulu'
-    - name: Setup node.js
-      uses: ./.github/actions/setup-node
     - name: Run yarn install
       uses: ./.github/actions/yarn-install
     - name: Start Metro in Debug

.github/actions/prepare-hermes-workspace/action.yml

@@ -17,6 +17,9 @@ outputs:
 runs:
   using: composite
   steps:
+    - name: Setup node.js
+      uses: ./.github/actions/setup-node
+
     - name: Setup hermes version
       shell: bash
       id: hermes-version
@@ -64,8 +67,6 @@ runs:
           echo "HERMES_CACHED=true" >> "$GITHUB_OUTPUT"
         fi
 
-    - name: Setup node.js
-      uses: ./.github/actions/setup-node
     - name: Yarn- Install Dependencies
       if: ${{ steps.meaningful-cache.outputs.HERMES_CACHED != 'true' }}
       uses: ./.github/actions/yarn-install

.github/actions/test-ios-helloworld/action.yml

@@ -23,8 +23,6 @@ runs:
       uses: ./.github/actions/setup-xcode
     - name: Setup node.js
       uses: ./.github/actions/setup-node
-    - name: Run yarn install
-      uses: ./.github/actions/yarn-install
     - name: Create Hermes folder
       shell: bash
       run: mkdir -p "$HERMES_WS_DIR"
@@ -36,6 +34,8 @@ runs:
     - name: Print Downloaded hermes
       shell: bash
       run: ls -lR "$HERMES_WS_DIR"
+    - name: Run yarn
+      uses: ./.github/actions/yarn-install
     - name: Setup ruby
       uses: ruby/setup-ruby@v1
       with:

.github/actions/test-library-on-nightly/action.yml

@@ -31,7 +31,7 @@ runs:
       run: |
         cd /tmp/RNApp/ios
         bundle install
-        RCT_USE_RN_DEP=1 RCT_USE_PREBUILT_RNCORE=1 bundle exec pod install
+        bundle exec pod install
         xcodebuild build \
           -workspace RNApp.xcworkspace \
           -scheme RNApp \

.github/actions/yarn-install/action.yml

@@ -2,6 +2,8 @@ name: yarn-install
 runs:
   using: composite
   steps:
+    - name: Setup node.js
+      uses: ./.github/actions/setup-node
     - name: Install dependencies
       shell: bash
       run: |

.github/workflows/prebuild-ios-core.yml

@@ -23,7 +23,7 @@ jobs:
         id: restore-ios-slice
         uses: actions/cache/restore@v4
         with:
-          key: v3-ios-core-${{ matrix.slice }}-${{ matrix.flavor }}-${{ hashFiles('packages/react-native/Package.swift', 'packages/react-native/scripts/ios-prebuild/*.js', 'packages/react-native/scripts/ios-prebuild.js', 'packages/react-native/React/**/*', 'packages/react-native/ReactCommon/**/*', 'packages/react-native/Libraries/**/*') }}
+          key: v3-ios-core-${{ matrix.slice }}-${{ matrix.flavor }}-${{ hashFiles('packages/react-native/Package.swift', 'packages/react-native/scripts/ios-prebuild/setup.js', 'packages/react-native/React/**/*', 'packages/react-native/ReactCommon/**/*', 'packages/react-native/Libraries/**/*') }}
           path: packages/react-native/
       - name: Setup node.js
         if: steps.restore-ios-slice.outputs.cache-hit != 'true'
@@ -117,7 +117,7 @@ jobs:
         uses: actions/cache/save@v4
         if: ${{ github.ref == 'refs/heads/main' }} # To avoid that the cache explode
         with:
-          key: v3-ios-core-${{ matrix.slice }}-${{ matrix.flavor }}-${{ hashFiles('packages/react-native/Package.swift', 'packages/react-native/scripts/ios-prebuild/*.js', 'packages/react-native/scripts/ios-prebuild.js', 'packages/react-native/React/**/*', 'packages/react-native/ReactCommon/**/*', 'packages/react-native/Libraries/**/*') }}
+          key: v3-ios-core-${{ matrix.slice }}-${{ matrix.flavor }}-${{ hashFiles('packages/react-native/Package.swift', 'packages/react-native/scripts/ios-prebuild/setup.js', 'packages/react-native/React/**/*', 'packages/react-native/ReactCommon/**/*', 'packages/react-native/Libraries/**/*') }}
           path: |
             packages/react-native/.build/output/spm/${{ matrix.flavor }}/Build/Products
             packages/react-native/.build/headers
@@ -140,7 +140,7 @@ jobs:
         uses: actions/cache/restore@v4
         with:
           path: packages/react-native/.build/output/xcframeworks
-          key: v2-ios-core-xcframework-${{ matrix.flavor }}-${{ hashFiles('packages/react-native/Package.swift', 'packages/react-native/scripts/ios-prebuild/*.js', 'packages/react-native/scripts/ios-prebuild.js', 'packages/react-native/React/**/*', 'packages/react-native/ReactCommon/**/*', 'packages/react-native/Libraries/**/*') }}
+          key: v2-ios-core-xcframework-${{ matrix.flavor }}-${{ hashFiles('packages/react-native/Package.swift', 'packages/react-native/scripts/ios-prebuild/setup.js', 'packages/react-native/React/**/*', 'packages/react-native/ReactCommon/**/*', 'packages/react-native/Libraries/**/*') }}
       - name: Setup node.js
         if: steps.restore-ios-xcframework.outputs.cache-hit != 'true'
         uses: ./.github/actions/setup-node
@@ -209,4 +209,4 @@ jobs:
           path: |
             packages/react-native/.build/output/xcframeworks/ReactCore${{matrix.flavor}}.xcframework.tar.gz
             packages/react-native/.build/output/xcframeworks/ReactCore${{matrix.flavor}}.framework.dSYM.tar.gz
-          key: v2-ios-core-xcframework-${{ matrix.flavor }}-${{ hashFiles('packages/react-native/Package.swift', 'packages/react-native/scripts/ios-prebuild/*.js', 'packages/react-native/scripts/ios-prebuild.js', 'packages/react-native/React/**/*', 'packages/react-native/ReactCommon/**/*', 'packages/react-native/Libraries/**/*') }}
+          key: v2-ios-core-xcframework-${{ matrix.flavor }}-${{ hashFiles('packages/react-native/Package.swift', 'packages/react-native/scripts/ios-prebuild/setup.js', 'packages/react-native/React/**/*', 'packages/react-native/ReactCommon/**/*', 'packages/react-native/Libraries/**/*') }}

.github/workflows/test-all.yml

@@ -2,6 +2,11 @@ name: Test All
 
 on:
   workflow_dispatch:
+    inputs:
+      run-e2e-tests:
+        description: Whether to run E2E tests or not
+        type: boolean
+        default: false
   pull_request:
   push:
     branches:
@@ -163,6 +168,7 @@ jobs:
           flavor: ${{ matrix.flavor }}
 
   test_e2e_ios_rntester:
+    if: ${{ github.ref == 'refs/heads/main' || contains(github.ref,  'stable') || inputs.run-e2e-tests }}
     runs-on: macos-14-large
     needs:
       [test_ios_rntester]
@@ -196,6 +202,7 @@ jobs:
           flavor: ${{ matrix.flavor }}
 
   test_e2e_ios_templateapp:
+    if: ${{ github.ref == 'refs/heads/main' || contains(github.ref,  'stable') || inputs.run-e2e-tests }}
     runs-on: macos-14-large
     needs: [build_npm_package, prebuild_apple_dependencies]
     env:
@@ -288,6 +295,7 @@ jobs:
           working-directory: /tmp/RNTestProject
 
   test_e2e_android_templateapp:
+    if: ${{ github.ref == 'refs/heads/main' || contains(github.ref,  'stable') || inputs.run-e2e-tests }}
     runs-on: 4-core-ubuntu
     needs: build_npm_package
     strategy:
@@ -406,9 +414,11 @@ jobs:
         uses: ./.github/actions/build-android
         with:
           release-type: ${{ needs.set_release_type.outputs.RELEASE_TYPE }}
+          run-e2e-tests: ${{ github.ref == 'refs/heads/main' || contains(github.ref,  'stable') || inputs.run-e2e-tests }}
           gradle-cache-encryption-key: ${{ secrets.GRADLE_CACHE_ENCRYPTION_KEY }}
 
   test_e2e_android_rntester:
+    if: ${{ github.ref == 'refs/heads/main' || contains(github.ref,  'stable') || inputs.run-e2e-tests }}
     runs-on: 4-core-ubuntu
     needs: [build_android]
     strategy:
@@ -573,8 +583,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: ["24", "22"]
-        # node-version: ["24", "22", "20.19.4"]
+        node-version: ["24", "22", "20"]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -607,7 +616,7 @@ jobs:
   rerun-failed-jobs:
     runs-on: ubuntu-latest
     needs: [test_e2e_ios_rntester, test_e2e_android_rntester, test_e2e_ios_templateapp, test_e2e_android_templateapp]
-    if: ${{ github.ref == 'refs/heads/main' && always() }}
+    if: always()
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.gitignore

@@ -43,6 +43,7 @@ project.xcworkspace
 /private/helloworld/android/app/build/
 /private/helloworld/android/build/
 /packages/react-native-popup-menu-android/android/build/
+/packages/react-native-test-library/android/build/
 
 # Buck
 .buckd

.prettierrc

@@ -0,0 +1,36 @@
+{
+  "arrowParens": "avoid",
+  "bracketSameLine": true,
+  "bracketSpacing": false,
+  "requirePragma": true,
+  "singleQuote": true,
+  "trailingComma": "all",
+  "endOfLine": "lf",
+  "overrides": [
+    {
+      "files": ["*.code-workspace"],
+      "options": {
+        "parser": "json"
+      }
+    },
+    {
+      "files": [
+        "*.js",
+        "*.js.flow"
+      ],
+      "options": {
+        "parser": "hermes"
+      }
+    },
+    {
+      "files": [
+        "**/__docs__/*.md"
+      ],
+      "options": {
+        "parser": "markdown",
+        "proseWrap": "always",
+        "requirePragma": false
+      }
+    }
+  ]
+}

.prettierrc.js

@@ -1,46 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-let plugins = ['prettier-plugin-hermes-parser'];
-try {
-  plugins = require('./.prettier-plugins.fb.js');
-} catch {}
-
-module.exports = {
-  arrowParens: 'avoid',
-  bracketSameLine: true,
-  bracketSpacing: false,
-  requirePragma: true,
-  singleQuote: true,
-  trailingComma: 'all',
-  endOfLine: 'lf',
-  plugins,
-  overrides: [
-    {
-      files: ['*.code-workspace'],
-      options: {
-        parser: 'json',
-      },
-    },
-    {
-      files: ['*.js', '*.js.flow'],
-      options: {
-        parser: 'hermes',
-      },
-    },
-    {
-      files: ['**/__docs__/*.md'],
-      options: {
-        parser: 'markdown',
-        proseWrap: 'always',
-        requirePragma: false,
-      },
-    },
-  ],
-};

CHANGELOG-0.7x.md

@@ -522,37 +522,6 @@ ChuiHW))
 - **Style:** Fixed `centerContent` losing taps and causing jitter ([fe7e97a2fd](https://github.com/facebook/react-native/commit/fe7e97a2fd272db0d9d9aa7d0561337a7c8e2c30) by [@gaearon](https://github.com/gaearon))
 - **Xcode:** Properly escape paths in Xcode build script used when bundling an app. ([2fee13094b](https://github.com/facebook/react-native/commit/2fee13094b3d384c071978776fd8b7cff0b6530f) by [@kraenhansen](https://github.com/kraenhansen))
 
-# Changelog
-## v0.77.3
-
-### Added
-
-#### Android specific
-
-- **Gradle**: RNGP - Add support for `exclusiveEnterpriseRepository` to specify an internal Maven mirror. ([6cb8dc37c7](https://github.com/facebook/react-native/commit/6cb8dc37c74995cba3f9f0a845919f305de53c3d) by [@cortinico](https://github.com/cortinico))
-
-### Changed
-
-- **Metro**: Bump Metro minimum version from `^0.81.3` to `^0.81.5`. ([dfa81638dd](https://github.com/facebook/react-native/commit/dfa81638dd17e46f70f10b25c4f4fd9f370a4b0e) by [@robhogan](https://github.com/robhogan))
-
-### Fixed
-
-- **Timers**: Align timer IDs and timer function argument error handling with web standards. ([480a4642e5](https://github.com/facebook/react-native/commit/480a4642e5a644becf1c477d3d239f9b57efff3a) by [@kitten](https://github.com/kitten))
-
-#### Android specific
-
-- **Modal**: Fix Modal first frame being rendered on top-left corner. ([b950fa2afb](https://github.com/facebook/react-native/commit/b950fa2afb20e2213ff6c733cb1c2465b90406ef) by [@cortinico](https://github.com/cortinico))
-- **layout**: Fix wrong `borderBottomEndRadius` on RTL. ([68d6ada448](https://github.com/facebook/react-native/commit/68d6ada44893701b6006a6b1753131c7e880a30a) by [@riteshshukla04](https://github.com/riteshshukla04))
-- **Modal**: Fix `FLAG_SECURE` not respected in Modal dialog. ([7e029b0dcf](https://github.com/facebook/react-native/commit/7e029b0dcf6d1a6455a8a6343457b70e353d0ff6) by [@mateoguzmana](https://github.com/mateoguzmana))
-- **lifecylcle**: Legacy arch: fix #50274, Fast Refresh sometimes breaks after full refresh. ([c43952ac22](https://github.com/facebook/react-native/commit/c43952ac22b2356be3130c906329f61e246082cb) by [@robhogan](https://github.com/robhogan))
-
-#### iOS specific
-
-- **Interop Layer**: Fixed adding child views to a native view using the interop layer. ([d53a60dd23](https://github.com/facebook/react-native/commit/d53a60dd23c5df8afca058a867c50df8b61f62e2) by [@chrfalch](https://github.com/chrfalch))
-- **Debugger**: Restore "Paused in debugger" overlay icon. ([f30c46efbd](https://github.com/facebook/react-native/commit/f30c46efbd964d367f678181589865a3faa931cd) by [@robhogan](https://github.com/robhogan))
-- **layout**: Layout direction changes are now honored on bundle reload. ([36f29beac4](https://github.com/facebook/react-native/commit/36f29beac47259768612bf56e5d9acfa4b94ab1a) by [@chrsmys](https://github.com/chrsmys))
-- **file reads**: Fix crash caused by `[RCTFileRequestHanlder invalidate]`. ([789ed7d5ad](https://github.com/facebook/react-native/commit/789ed7d5ad75ad4c20ecd1eb19d1fc18275fc500) by [@zhouzh1](https://github.com/zhouzh1))
-
 ## v0.77.2
 
 ### Added

CHANGELOG.md

@@ -1,114 +1,5 @@
 # Changelog
 
-## v0.81.0-rc.2
-
-### Breaking
-
-
-
-#### Android specific
-
-
-
-#### iOS specific
-
-
-
-### Added
-
-
-
-#### Android specific
-
-
-
-#### iOS specific
-
-
-
-### Changed
-
-- Added support to `react-native/babel-preset` for a `hermesParserOptions` option, that expects an object that enables overriding `hermes-parser` options. ([0508eddfe6](https://github.com/facebook/react-native/commit/0508eddfe60df60cb3bfa4074ae199bd0e492d5f) by [@yungsters](https://github.com/yungsters))
-- `NewAppScreen` no longer internally handles device safe area, use optional `safeAreaInsets` prop (aligned in 0.81 template) ([732bd12dc2](https://github.com/facebook/react-native/commit/732bd12dc21460641ef01b23f2eb722f26b060d5) by [@huntie](https://github.com/huntie))
-
-#### Android specific
-
-
-
-#### iOS specific
-
-
-
-### Deprecated
-
-
-
-#### Android specific
-
-
-
-#### iOS specific
-
-
-
-### Removed
-
-
-
-#### Android specific
-
-
-
-#### iOS specific
-
-
-
-### Fixed
-
-
-
-#### Android specific
-
-
-
-#### iOS specific
-
-- Fixed issue with RNDeps release/debug switch failing ([4ee2b60a1e](https://github.com/facebook/react-native/commit/4ee2b60a1eacca744d58a7ad336ca9d3714289f6) by [@chrfalch](https://github.com/chrfalch))
-- Fixed missing script for resolving prebuilt xcframework when switching between release/debug ([2e55241a90](https://github.com/facebook/react-native/commit/2e55241a901b4cd95917de68ce9078928820a208) by [@chrfalch](https://github.com/chrfalch))
-
-### Security
-
-
-
-#### Android specific
-
-
-
-#### iOS specific
-
-
-
-### Unknown
-
-- Release 0.81.0-rc.2 ([68ef746ec5](https://github.com/facebook/react-native/commit/68ef746ec5dd7d2874d190733e75bb8197034c5a) by [@react-native-bot](https://github.com/react-native-bot))
-- Fix E2E test script when the ci flag is not specified ([cdd7f99581](https://github.com/facebook/react-native/commit/cdd7f995813727b630ff38abc8a910a0f8f10b37) by [@cipolleschi](https://github.com/cipolleschi))
-- Fix E2E script when using CI artifacts ([d8bf94489a](https://github.com/facebook/react-native/commit/d8bf94489ab7498eba7e5f45d09dd2819fe739c3) by [@cipolleschi](https://github.com/cipolleschi))
-- Bump Podfile.lock ([10b63c15b6](https://github.com/facebook/react-native/commit/10b63c15b6faaf54d555ede879f82ac565f030a9) by [@react-native-bot](https://github.com/react-native-bot))
-- Release 0.81.0-rc.1 ([b06bb89ddd](https://github.com/facebook/react-native/commit/b06bb89ddd3cebddea4716036a4368b87a65f492) by [@react-native-bot](https://github.com/react-native-bot))
-
-#### Android Unknown
-
-
-
-#### iOS Unknown
-
-
-
-#### Failed to parse
-
-
-
-
 ## v0.81.0-rc.1
 
 ### Added
@@ -701,10 +592,6 @@ See [CHANGELOG-0.7x](./CHANGELOG-0.7x#v0781)
 
 See [CHANGELOG-0.7x](./CHANGELOG-0.7x#v0780)
 
-## v0.77.3
-
-See [CHANGELOG-0.7x](./CHANGELOG-0.7x#v0773)
-
 ## v0.77.2
 
 See [CHANGELOG-0.7x](./CHANGELOG-0.7x#v0772)

build.gradle.kts

@@ -157,11 +157,4 @@ allprojects {
           com.ncorti.ktfmt.gradle.tasks.KtfmtCheckTask::class,
           com.ncorti.ktfmt.gradle.tasks.KtfmtFormatTask::class)
       .forEach { tasks.withType(it) { exclude(excludePatterns) } }
-
-  // Disable the problematic ktfmt script tasks due to symbolic link issues in subprojects
-  afterEvaluate {
-    listOf("ktfmtCheckScripts", "ktfmtFormatScripts").forEach {
-      tasks.findByName(it)?.enabled = false
-    }
-  }
 }

package.json

@@ -56,8 +56,8 @@
     "@electron/packager": "^18.3.6",
     "@jest/create-cache-key-function": "^29.7.0",
     "@microsoft/api-extractor": "^7.52.2",
-    "@react-native/metro-babel-transformer": "0.82.0-main",
-    "@react-native/metro-config": "0.82.0-main",
+    "@react-native/metro-babel-transformer": "0.81.0-main",
+    "@react-native/metro-config": "0.81.0-main",
     "@tsconfig/node22": "22.0.2",
     "@types/react": "^19.1.0",
     "@typescript-eslint/parser": "^8.36.0",
@@ -82,7 +82,7 @@
     "eslint-plugin-redundant-undefined": "^0.4.0",
     "eslint-plugin-relay": "^1.8.3",
     "flow-api-translator": "0.29.1",
-    "flow-bin": "^0.276.0",
+    "flow-bin": "^0.275.0",
     "glob": "^7.1.1",
     "hermes-eslint": "0.29.1",
     "hermes-transform": "0.29.1",
@@ -96,8 +96,8 @@
     "markdownlint-cli2": "^0.17.2",
     "markdownlint-rule-relative-links": "^3.0.0",
     "memfs": "^4.7.7",
-    "metro-babel-register": "^0.83.1",
-    "metro-transform-plugins": "^0.83.1",
+    "metro-babel-register": "^0.83.0",
+    "metro-transform-plugins": "^0.83.0",
     "micromatch": "^4.0.4",
     "node-fetch": "^2.2.0",
     "nullthrows": "^1.1.1",

packages/assets/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/assets-registry",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Asset support code for React Native.",
   "license": "MIT",
   "repository": {

packages/babel-plugin-codegen/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/babel-plugin-codegen",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Babel plugin to generate native module and view manager code for React Native.",
   "license": "MIT",
   "repository": {
@@ -26,7 +26,7 @@
   ],
   "dependencies": {
     "@babel/traverse": "^7.25.3",
-    "@react-native/codegen": "0.82.0-main"
+    "@react-native/codegen": "0.81.0-main"
   },
   "devDependencies": {
     "@babel/core": "^7.25.2"

packages/community-cli-plugin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/community-cli-plugin",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Core CLI commands for React Native",
   "keywords": [
     "react-native",
@@ -22,16 +22,16 @@
     "dist"
   ],
   "dependencies": {
-    "@react-native/dev-middleware": "0.82.0-main",
+    "@react-native/dev-middleware": "0.81.0-main",
     "debug": "^4.4.0",
     "invariant": "^2.2.4",
-    "metro": "^0.83.1",
-    "metro-config": "^0.83.1",
-    "metro-core": "^0.83.1",
+    "metro": "^0.83.0",
+    "metro-config": "^0.83.0",
+    "metro-core": "^0.83.0",
     "semver": "^7.1.3"
   },
   "devDependencies": {
-    "metro-resolver": "^0.83.1"
+    "metro-resolver": "^0.83.0"
   },
   "peerDependencies": {
     "@react-native-community/cli": "*",

packages/core-cli-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/core-cli-utils",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "React Native CLI library for Frameworks to build on",
   "license": "MIT",
   "main": "./src/index.flow.js",

packages/debugger-frontend/BUILD_INFO

@@ -1,5 +1,5 @@
-@generated SignedSource<<74c5fb174ae5a8a3850a3c2373b3b6f5>>
-Git revision: a7e4f59675edbda995b0cb0d40f277a59a3baebf
+@generated SignedSource<<e2d97b04634bf3b566f33d455f38658f>>
+Git revision: 8dc0d5b365e6b4600b78e5a7381aa861d8c1c81e
 Built with --nohooks: false
 Is local checkout: false
 Remote URL: https://github.com/facebook/react-native-devtools-frontend

packages/debugger-frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/debugger-frontend",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Debugger frontend for React Native based on Chrome DevTools",
   "keywords": [
     "react-native",

packages/debugger-shell/bin/react-native-devtools

@@ -1,62 +0,0 @@
-#!/usr/bin/env dotslash
-
-// @generated SignedSource<<686df5695b32a90cd465412d979a1a3f>>
-
-
-{
-    "name": "React Native DevTools",
-    "platforms": {
-        "linux-aarch64": {
-            "size": 113511487,
-            "hash": "sha256",
-            "digest": "c22f7d5e029357f05055ce7c56cc284a0d441d558e103a7b7ebae118c67d0b95",
-            "providers": [
-                {
-                    "type": "http",
-                    "url": "https://scontent.xx.fbcdn.net/mci_ab/uap/?ab_b=m&ab_page=react_native_devtools_binaries&ab_entry=AQPRilWDJV8xyKEv9lqYn7Hf2kyZg6nqW8KctGZCXsU95lS_MTFyAmEULrB3J6hGCjqBY2Zl-uq_FjERAIgzbZFWX2eceacTbutBSOKEj6QTZzkVN_L1zPh2lGh24x29MHpkwUzw4E-kAXV43f-11QxqD7orI1QicyOnsmUqeRNKE_QjM9rNRsw6iE8"
-                }
-            ],
-            "format": "tar.gz",
-            "path": "React Native DevTools-linux-arm64/React Native DevTools"
-        },
-        "linux-x86_64": {
-            "size": 113244728,
-            "hash": "sha256",
-            "digest": "d749aee18d6c969f033511ed631b439c578068cc20786974bc0ee707c6c2f177",
-            "providers": [
-                {
-                    "type": "http",
-                    "url": "https://scontent.xx.fbcdn.net/mci_ab/uap/?ab_b=m&ab_page=react_native_devtools_binaries&ab_entry=AQP8NAAXjHJ-9NJThip1nnmVim4yiS1tdYAXmWl2Remiluq5f13nXA8YEadsmGRLWxXz2WJouHXSK47ea4a30fxewyKeTt0niFn3T-lr_91m3Ve5ZS-FOZ_9CRVCkv5zC-Z1FlXJGOnphfWetIU10Pw9tho3IzjdSNlXle0XTrkJ2AyKSl4cKPaX"
-                }
-            ],
-            "format": "tar.gz",
-            "path": "React Native DevTools-linux-x64/React Native DevTools"
-        },
-        "macos-aarch64": {
-            "size": 108805847,
-            "hash": "sha256",
-            "digest": "dc4a6cfa3d2d8646db8793ef497e43ad72be54bb14ed96345d059880ff72ce1e",
-            "providers": [
-                {
-                    "type": "http",
-                    "url": "https://scontent.xx.fbcdn.net/mci_ab/uap/?ab_b=m&ab_page=react_native_devtools_binaries&ab_entry=AQPuZx9G4h30mUDM0hZ8y74LbzAi7-S6jnOqq8uyfDdIptLwIgpb8CKB8F2tduvaBFMGd7obwXd2NVy01r6XKVdgAK5-QTp8PYUPUE7VSCi6QAqobXcQ2uq_lY-jgyj8XkV4Ua4gA6KR609Bmh-beSTOrSqMymqVodaGqoGjB_9jVwfD99_PfFlex-Ta"
-                }
-            ],
-            "format": "tar.gz",
-            "path": "React Native DevTools.app/Contents/MacOS/React Native DevTools"
-        },
-        "macos-x86_64": {
-            "size": 113766610,
-            "hash": "sha256",
-            "digest": "74178859ce6a1c26c32055e192b1b123822c76c827ea86a6dfdb5463b89b1ace",
-            "providers": [
-                {
-                    "type": "http",
-                    "url": "https://scontent.xx.fbcdn.net/mci_ab/uap/?ab_b=m&ab_page=react_native_devtools_binaries&ab_entry=AQN6DjGhr8_L7N_cwrh8pi3cfNcbn9dot_QQpgwe3Vv-780FDgi6JUeMvbo_wbFoT2rogxfHZ0-NbXbKdWYwhGUoGeQuikT57QnVMOYuPUTjlQUgYy0Ng9XPhq3iSEYwlMV1XsUJuPFRUg-hIHcgaaA55JoTLXZ1fLYydhHnmgRxGHc4pxaHvSpTtQ"
-                }
-            ],
-            "format": "tar.gz",
-            "path": "React Native DevTools.app/Contents/MacOS/React Native DevTools"
-        }
-    }
-}

packages/debugger-shell/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/debugger-shell",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Experimental debugger shell for React Native for use with @react-native/debugger-frontend",
   "keywords": [
     "react-native",

packages/dev-middleware/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/dev-middleware",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Dev server middleware for React Native",
   "keywords": [
     "react-native",
@@ -23,7 +23,7 @@
   ],
   "dependencies": {
     "@isaacs/ttlcache": "^1.4.1",
-    "@react-native/debugger-frontend": "0.82.0-main",
+    "@react-native/debugger-frontend": "0.81.0-main",
     "chrome-launcher": "^0.15.2",
     "chromium-edge-launcher": "^0.2.0",
     "connect": "^3.6.5",

packages/dev-middleware/src/__tests__/InspectorProxyCdpRewritingHacks-test.js

@@ -184,7 +184,7 @@ describe.each(['HTTP', 'HTTPS'])(
     describe.each(['10.0.2.2:8080', '[::1]', 'example.com:2000'])(
       '%s aliasing to and from localhost',
       sourceHost => {
-        test('Debugger.scriptParsed - in source map fetching', async () => {
+        test('in source map fetching during Debugger.scriptParsed', async () => {
           serverRef.app.use('/source-map', serveStaticJson({version: 3}));
           const {device, debugger_} = await createAndConnectTarget(
             serverRef,
@@ -220,53 +220,6 @@ describe.each(['HTTP', 'HTTPS'])(
           }
         });
 
-        test('Runtime.consoleAPICalled - in location resolutions', async () => {
-          const {device, debugger_} = await createAndConnectTarget(
-            serverRef,
-            autoCleanup.signal,
-            {
-              app: 'bar-app',
-              id: 'page1',
-              title: 'bar-title',
-              vm: 'bar-vm',
-            },
-            {
-              deviceHostHeader: sourceHost,
-            },
-          );
-          try {
-            const consoleMessage = await sendFromTargetToDebugger(
-              device,
-              debugger_,
-              'page1',
-              {
-                method: 'Runtime.consoleAPICalled',
-                params: {
-                  stackTrace: {
-                    callFrames: [
-                      {
-                        url: `${protocol.toLowerCase()}://${sourceHost}/bundleFile:1:2`,
-                        field2: 'aaa',
-                      },
-                      {
-                        url: `${protocol.toLowerCase()}://${sourceHost}/bundleFile:5:4`,
-                        field3: 'bbb',
-                      },
-                    ],
-                  },
-                },
-              },
-            );
-            expect(consoleMessage.params.stackTrace.callFrames).toEqual([
-              {url: `${serverRef.serverBaseUrl}/bundleFile:1:2`, field2: 'aaa'},
-              {url: `${serverRef.serverBaseUrl}/bundleFile:5:4`, field3: 'bbb'},
-            ]);
-          } finally {
-            device.close();
-            debugger_.close();
-          }
-        });
-
         test('in Debugger.setBreakpointByUrl', async () => {
           const {device, debugger_} = await createAndConnectTarget(
             serverRef,

packages/dev-middleware/src/inspector-proxy/Device.js

@@ -844,23 +844,6 @@ export default class Device {
 
       this.#isLegacyPageReloading = false;
     }
-
-    if (payload.method === 'Runtime.consoleAPICalled') {
-      const callFrames = payload.params?.stackTrace?.callFrames ?? [];
-      for (const callFrame of callFrames) {
-        if (callFrame.url) {
-          const parsedUrl = this.#tryParseHTTPURL(callFrame.url);
-          if (parsedUrl) {
-            // Rewrite device-relative URLs pointing to the server so that they're
-            // reachable from the frontend.
-            callFrame.url = this.#deviceRelativeUrlToDebuggerRelativeUrl(
-              parsedUrl,
-              debuggerInfo,
-            ).href;
-          }
-        }
-      }
-    }
   }
 
   /**

packages/dev-middleware/src/inspector-proxy/cdp-types/messages.js

@@ -48,7 +48,6 @@ export type CDPClientMessage =
 
 export type CDPServerMessage =
   | CDPEvent<'Debugger.scriptParsed'>
-  | CDPEvent<'Runtime.consoleAPICalled'>
   | CDPEvent<>
   | CDPResponse<'Debugger.getScriptSource'>
   | CDPResponse<>;

packages/dev-middleware/src/inspector-proxy/cdp-types/protocol.js

@@ -84,27 +84,10 @@ export interface Debugger {
      */
     sourceMapURL: string,
   };
-
-  ConsoleAPICalled: {
-    args: Array<{type: string, value: string}>,
-    executionContextId: number,
-    stackTrace: {
-      timestamp: number,
-      type: string,
-      callFrames: Array<{
-        columnNumber: number,
-        lineNumber: number,
-        functionName: string,
-        scriptId: string,
-        url: string,
-      }>,
-    },
-  };
 }
 
 export type Events = {
   'Debugger.scriptParsed': Debugger['ScriptParsedEvent'],
-  'Runtime.consoleAPICalled': Debugger['ConsoleAPICalled'],
   [method: string]: JSONSerializable,
 };
 

packages/eslint-config-react-native/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/eslint-config",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "ESLint config for React Native",
   "license": "MIT",
   "repository": {
@@ -22,7 +22,7 @@
   "dependencies": {
     "@babel/core": "^7.25.2",
     "@babel/eslint-parser": "^7.25.1",
-    "@react-native/eslint-plugin": "0.82.0-main",
+    "@react-native/eslint-plugin": "0.81.0-main",
     "@typescript-eslint/eslint-plugin": "^8.36.0",
     "@typescript-eslint/parser": "^8.36.0",
     "eslint-config-prettier": "^8.5.0",

packages/eslint-plugin-react-native/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/eslint-plugin",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "ESLint rules for @react-native/eslint-config",
   "license": "MIT",
   "repository": {

packages/eslint-plugin-specs/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/eslint-plugin-specs",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "ESLint rules to validate NativeModule and Component Specs",
   "license": "MIT",
   "repository": {
@@ -26,7 +26,7 @@
   "dependencies": {
     "@babel/core": "^7.25.2",
     "@babel/plugin-transform-flow-strip-types": "^7.25.2",
-    "@react-native/codegen": "0.82.0-main",
+    "@react-native/codegen": "0.81.0-main",
     "make-dir": "^2.1.0",
     "pirates": "^4.0.1",
     "source-map-support": "0.5.0"

packages/gradle-plugin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/gradle-plugin",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Gradle Plugin for React Native",
   "license": "MIT",
   "repository": {

packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/ReactExtension.kt

@@ -100,10 +100,10 @@ abstract class ReactExtension @Inject constructor(val project: Project) {
    * Allows to specify the debuggable variants (by default just 'debug'). Variants in this list will
    * not be bundled (the bundle file will not be created and won't be copied over).
    *
-   * Default: ['debug', 'debugOptimized']
+   * Default: ['debug']
    */
   val debuggableVariants: ListProperty<String> =
-      objects.listProperty(String::class.java).convention(listOf("debug", "debugOptimized"))
+      objects.listProperty(String::class.java).convention(listOf("debug"))
 
   /** Hermes Config */
 

packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/ReactRootProjectPlugin.kt

@@ -26,21 +26,5 @@ class ReactRootProjectPlugin : Plugin<Project> {
         it.evaluationDependsOn(":app")
       }
     }
-    // We need to make sure that `:app:preBuild` task depends on all other subprojects' preBuild
-    // tasks. This is necessary in order to have all the codegen generated code before the CMake
-    // configuration build kicks in.
-    project.gradle.projectsEvaluated {
-      val appProject = project.rootProject.subprojects.find { it.name == "app" }
-      val appPreBuild = appProject?.tasks?.findByName("preBuild")
-      if (appPreBuild != null) {
-        // Find all other subprojects' preBuild tasks
-        val otherPreBuildTasks =
-            project.rootProject.subprojects
-                .filter { it != appProject }
-                .mapNotNull { it.tasks.findByName("preBuild") }
-        // Make :app:preBuild depend on all others
-        appPreBuild.dependsOn(otherPreBuildTasks)
-      }
-    }
   }
 }

packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/AgpConfiguratorUtils.kt

@@ -42,16 +42,6 @@ internal object AgpConfiguratorUtils {
                   getByName("release").apply {
                     manifestPlaceholders["usesCleartextTraffic"] = "false"
                   }
-                  maybeCreate("debugOptimized").apply {
-                    manifestPlaceholders["usesCleartextTraffic"] = "true"
-                    initWith(debug)
-                    externalNativeBuild {
-                      cmake {
-                        arguments("-DCMAKE_BUILD_TYPE=Release")
-                        matchingFallbacks += listOf("release")
-                      }
-                    }
-                  }
                 }
               }
         }

packages/metro-config/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/metro-config",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Metro configuration for React Native.",
   "license": "MIT",
   "repository": {
@@ -26,9 +26,9 @@
     "dist"
   ],
   "dependencies": {
-    "@react-native/js-polyfills": "0.82.0-main",
-    "@react-native/metro-babel-transformer": "0.82.0-main",
-    "metro-config": "^0.83.1",
-    "metro-runtime": "^0.83.1"
+    "@react-native/js-polyfills": "0.81.0-main",
+    "@react-native/metro-babel-transformer": "0.81.0-main",
+    "metro-config": "^0.83.0",
+    "metro-runtime": "^0.83.0"
   }
 }

packages/new-app-screen/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/new-app-screen",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "NewAppScreen component for React Native",
   "keywords": [
     "react-native"

packages/new-app-screen/src/NewAppScreen.js

@@ -13,7 +13,6 @@ import {ThemedText, useTheme} from './Theme';
 import * as React from 'react';
 import {
   Image,
-  ReactNativeVersion,
   ScrollView,
   StyleSheet,
   Text,
@@ -23,6 +22,7 @@ import {
   useWindowDimensions,
 } from 'react-native';
 import openURLInBrowser from 'react-native/Libraries/Core/Devtools/openURLInBrowser';
+import {version as ReactNativeVersion} from 'react-native/Libraries/Core/ReactNativeVersion';
 
 export type NewAppScreenProps = $ReadOnly<{
   templateFileName?: string,
@@ -109,9 +109,19 @@ export default function NewAppScreen({
 }
 
 function getVersionLabel(): React.Node {
+  const version =
+    [
+      ReactNativeVersion.major,
+      ReactNativeVersion.minor,
+      ReactNativeVersion.patch,
+    ].join('.') +
+    (ReactNativeVersion.prerelease != null
+      ? '-' + ReactNativeVersion.prerelease
+      : '');
+
   return (
     <ThemedText color="secondary" style={styles.label}>
-      Version: {ReactNativeVersion.getVersionString()}
+      Version: {version}
     </ThemedText>
   );
 }

packages/normalize-color/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/normalize-colors",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Color normalization for React Native.",
   "license": "MIT",
   "repository": {

packages/polyfills/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/js-polyfills",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Polyfills for React Native.",
   "license": "MIT",
   "repository": {

packages/react-native-babel-preset/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/babel-preset",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Babel preset for React Native applications",
   "repository": {
     "type": "git",
@@ -66,7 +66,7 @@
     "@babel/plugin-transform-typescript": "^7.25.2",
     "@babel/plugin-transform-unicode-regex": "^7.24.7",
     "@babel/template": "^7.25.0",
-    "@react-native/babel-plugin-codegen": "0.82.0-main",
+    "@react-native/babel-plugin-codegen": "0.81.0-main",
     "babel-plugin-syntax-hermes-parser": "0.29.1",
     "babel-plugin-transform-flow-enums": "^0.0.2",
     "react-refresh": "^0.14.0"

packages/react-native-babel-transformer/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/metro-babel-transformer",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Babel transformer for React Native applications.",
   "repository": {
     "type": "git",
@@ -27,7 +27,7 @@
   ],
   "dependencies": {
     "@babel/core": "^7.25.2",
-    "@react-native/babel-preset": "0.82.0-main",
+    "@react-native/babel-preset": "0.81.0-main",
     "hermes-parser": "0.29.1",
     "nullthrows": "^1.1.1"
   },

packages/react-native-codegen/.prettierrc

@@ -4,6 +4,5 @@
   "bracketSpacing": false,
   "requirePragma": true,
   "singleQuote": true,
-  "trailingComma": "all",
-  "parser": "babel"
+  "trailingComma": "all"
 }

packages/react-native-codegen/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/codegen",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Code generation tools for React Native",
   "license": "MIT",
   "repository": {

packages/react-native-codegen/scripts/build.js

@@ -32,7 +32,7 @@ const prettier = require('prettier');
 const {styleText} = require('util');
 
 const prettierConfig = JSON.parse(
-  fs.readFileSync(path.resolve(__dirname, '..', 'build.prettierrc'), 'utf8'),
+  fs.readFileSync(path.resolve(__dirname, '..', '.prettierrc'), 'utf8'),
 );
 
 const SRC_DIR = 'src';
@@ -58,7 +58,7 @@ function getBuildPath(file, buildFolder) {
   return path.resolve(pkgBuildPath, relativeToSrcPath);
 }
 
-async function buildFile(file, silent) {
+function buildFile(file, silent) {
   const destPath = getBuildPath(file, BUILD_DIR);
 
   fs.mkdirSync(path.dirname(destPath), {recursive: true});
@@ -82,7 +82,7 @@ async function buildFile(file, silent) {
           '\n',
       );
   } else {
-    const transformed = await prettier.format(
+    const transformed = prettier.format(
       babel.transformFileSync(file, {}).code,
       {
         ...prettierConfig,
@@ -111,8 +111,6 @@ const files = glob.sync(pattern, {nodir: true});
 
 process.stdout.write(fixedWidth(`${path.basename(PACKAGE_DIR)}\n`));
 
-Promise.all(
-  files.map(file => buildFile(file, !process.argv.includes('--verbose'))),
-).then(() => {
-  process.stdout.write(`[  ${styleText('green', 'OK')}  ]\n`);
-});
+files.forEach(file => buildFile(file, !process.argv.includes('--verbose')));
+
+process.stdout.write(`[  ${styleText('green', 'OK')}  ]\n`);

packages/react-native-codegen/src/generators/components/GenerateViewConfigJs.js

@@ -317,9 +317,7 @@ function buildViewConfig(
       return directEvents;
     }, []);
 
-  const properties: Array<
-    BabelNodeObjectMethod | BabelNodeObjectProperty | BabelNodeSpreadElement,
-  > = [
+  const properties = [
     t.objectProperty(
       t.identifier('uiViewClassName'),
       t.stringLiteral(componentName),

packages/react-native-codegen/src/generators/modules/GenerateModuleCpp.js

@@ -47,15 +47,15 @@ const HostFunctionTemplate = ({
     isVoid
       ? `\n  ${methodCall};`
       : isNullable
-        ? `\n  auto result = ${methodCall};`
-        : ''
+      ? `\n  auto result = ${methodCall};`
+      : ''
   }
   return ${
     isVoid
       ? 'jsi::Value::undefined()'
       : isNullable
-        ? 'result ? jsi::Value(std::move(*result)) : jsi::Value::null()'
-        : methodCall
+      ? 'result ? jsi::Value(std::move(*result)) : jsi::Value::null()'
+      : methodCall
   };
 }`;
 };

packages/react-native-codegen/src/generators/modules/GenerateModuleH.js

@@ -572,17 +572,17 @@ function translateEventEmitterToCpp(
   ${
     isVoidTypeAnnotation ? '' : `template <typename ${templateName}> `
   }void emit${toPascalCase(eventEmitter.name)}(${
-    isVoidTypeAnnotation
-      ? ''
-      : `${isArray ? `std::vector<${templateName}>` : templateName} value`
-  }) {${
-    isVoidTypeAnnotation
-      ? ''
-      : `
+      isVoidTypeAnnotation
+        ? ''
+        : `${isArray ? `std::vector<${templateName}>` : templateName} value`
+    }) {${
+      isVoidTypeAnnotation
+        ? ''
+        : `
     static_assert(bridging::supportsFromJs<${
       isArray ? `std::vector<${templateName}>` : templateName
     }, ${jsiType}>, "value cannnot be converted to ${jsiType}");`
-  }
+    }
     static_cast<AsyncEventEmitter<${
       isVoidTypeAnnotation ? '' : 'jsi::Value'
     }>&>(*delegate_.eventEmitterMap_["${eventEmitter.name}"]).emit(${

packages/react-native-codegen/src/generators/modules/GenerateModuleJavaSpec.js

@@ -84,10 +84,10 @@ function EventEmitterTemplate(
       : ''
   }) {
     mEventEmitterCallback.invoke("${eventEmitter.name}"${
-      eventEmitter.typeAnnotation.typeAnnotation.type !== 'VoidTypeAnnotation'
-        ? ', value'
-        : ''
-    });
+    eventEmitter.typeAnnotation.typeAnnotation.type !== 'VoidTypeAnnotation'
+      ? ', value'
+      : ''
+  });
   }`;
 }
 
@@ -113,8 +113,8 @@ function MethodTemplate(
   const methodClosing = abstract
     ? ';'
     : methodBody != null && methodBody.length > 0
-      ? ` { ${methodBody} }`
-      : ' {}';
+    ? ` { ${methodBody} }`
+    : ' {}';
   return `  ${methodJavaAnnotation}
   public ${methodQualifier}${translatedReturnType} ${methodName}(${traversedArgs.join(
     ', ',

packages/react-native-codegen/src/generators/modules/GenerateModuleObjCpp/source/serializeModule.js

@@ -74,22 +74,22 @@ namespace facebook::react {
           }),
         )
         .join('\n' + ' '.repeat(8))}${
-        eventEmitters.length > 0
-          ? eventEmitters
-              .map(eventEmitter => {
-                return `
+  eventEmitters.length > 0
+    ? eventEmitters
+        .map(eventEmitter => {
+          return `
         eventEmitterMap_["${eventEmitter.name}"] = std::make_shared<AsyncEventEmitter<id>>();`;
-              })
-              .join('')
-          : ''
-      }${
-        eventEmitters.length > 0
-          ? `
+        })
+        .join('')
+    : ''
+}${
+  eventEmitters.length > 0
+    ? `
         setEventEmitterCallback([&](const std::string &name, id value) {
           static_cast<AsyncEventEmitter<id> &>(*eventEmitterMap_[name]).emit(value);
         });`
-          : ''
-      }
+    : ''
+}
   }
 } // namespace facebook::react`;
 

packages/react-native-codegen/src/parsers/flow/modules/__tests__/module-parser-e2e-test.js

@@ -116,10 +116,10 @@ describe('Flow Module Parser', () => {
         nullable && optional
           ? 'a nullable and optional'
           : nullable
-            ? 'a nullable'
-            : optional
-              ? 'an optional'
-              : 'a required';
+          ? 'a nullable'
+          : optional
+          ? 'an optional'
+          : 'a required';
 
       function annotateArg(paramName: string, paramType: string) {
         if (nullable && optional) {
@@ -167,10 +167,10 @@ describe('Flow Module Parser', () => {
         (nullable && optional
           ? 'Nullable and Optional'
           : nullable
-            ? 'Nullable'
-            : optional
-              ? 'Optional'
-              : 'Required') + ' Parameter',
+          ? 'Nullable'
+          : optional
+          ? 'Optional'
+          : 'Required') + ' Parameter',
         () => {
           it(`should not parse methods that have ${PARAM_TYPE_DESCRIPTION} parameter of type 'Function'`, () => {
             expect(() => parseParamType('arg', 'Function')).toThrow(
@@ -397,10 +397,10 @@ describe('Flow Module Parser', () => {
               isPropNullable && isPropOptional
                 ? 'a nullable and optional'
                 : isPropNullable
-                  ? 'a nullable'
-                  : isPropOptional
-                    ? 'an optional'
-                    : 'a required';
+                ? 'a nullable'
+                : isPropOptional
+                ? 'an optional'
+                : 'a required';
 
             function annotateProp(propName: string, propType: string) {
               if (isPropNullable && isPropOptional) {
@@ -465,10 +465,10 @@ describe('Flow Module Parser', () => {
               (isPropNullable && isPropOptional
                 ? 'Nullable and Optional'
                 : isPropNullable
-                  ? 'Nullable'
-                  : isPropOptional
-                    ? 'Optional'
-                    : 'Required') + ' Property',
+                ? 'Nullable'
+                : isPropOptional
+                ? 'Optional'
+                : 'Required') + ' Property',
               () => {
                 describe('Props with Primitive Types', () => {
                   PRIMITIVES.forEach(([FLOW_TYPE, PARSED_TYPE_NAME]) => {
@@ -932,10 +932,10 @@ describe('Flow Module Parser', () => {
                 nullable && optional
                   ? 'a nullable and optional'
                   : nullable
-                    ? 'a nullable'
-                    : optional
-                      ? 'an optional'
-                      : 'a required';
+                  ? 'a nullable'
+                  : optional
+                  ? 'an optional'
+                  : 'a required';
 
               function annotateProp(propName: string, propType: string) {
                 if (nullable && optional) {
@@ -1001,10 +1001,10 @@ describe('Flow Module Parser', () => {
                 (nullable && optional
                   ? 'Nullable and Optional'
                   : nullable
-                    ? 'Nullable'
-                    : optional
-                      ? 'Optional'
-                      : 'Required') + ' Property',
+                  ? 'Nullable'
+                  : optional
+                  ? 'Optional'
+                  : 'Required') + ' Property',
                 () => {
                   /**
                    * TODO: Fill out props in promise

packages/react-native-codegen/src/parsers/flow/parser.js

@@ -187,8 +187,8 @@ class FlowParser implements Parser {
       typeAnnotation.type === 'EnumStringBody'
         ? 'StringTypeAnnotation'
         : typeAnnotation.type === 'EnumNumberBody'
-          ? 'NumberTypeAnnotation'
-          : null;
+        ? 'NumberTypeAnnotation'
+        : null;
     if (!enumMembersType) {
       throw new Error(
         `Unknown enum type annotation type. Got: ${typeAnnotation.type}. Expected: EnumStringBody or EnumNumberBody.`,
@@ -242,14 +242,14 @@ class FlowParser implements Parser {
               value: member.init.value,
             }
           : typeof member.init?.value === 'string'
-            ? {
-                type: 'StringLiteralTypeAnnotation',
-                value: member.init.value,
-              }
-            : {
-                type: 'StringLiteralTypeAnnotation',
-                value: member.id.name,
-              };
+          ? {
+              type: 'StringLiteralTypeAnnotation',
+              value: member.init.value,
+            }
+          : {
+              type: 'StringLiteralTypeAnnotation',
+              value: member.id.name,
+            };
 
       return {
         name: member.id.name,

packages/react-native-codegen/src/parsers/typescript/components/componentsUtils.js

@@ -353,8 +353,8 @@ function setDefaultValue(
       common.default = ((defaultValue === null
         ? null
         : defaultValue
-          ? defaultValue
-          : 0): number | null);
+        ? defaultValue
+        : 0): number | null);
       break;
     case 'BooleanTypeAnnotation':
       common.default = defaultValue === null ? null : !!defaultValue;

packages/react-native-codegen/src/parsers/typescript/modules/__tests__/typescript-module-parser-e2e-test.js

@@ -192,10 +192,10 @@ describe('TypeScript Module Parser', () => {
         nullable && optional
           ? 'a nullable and optional'
           : nullable
-            ? 'a nullable'
-            : optional
-              ? 'an optional'
-              : 'a required';
+          ? 'a nullable'
+          : optional
+          ? 'an optional'
+          : 'a required';
 
       function annotateArg(paramName: string, paramType: string) {
         if (nullable && optional) {
@@ -243,10 +243,10 @@ describe('TypeScript Module Parser', () => {
         (nullable && optional
           ? 'Nullable and Optional'
           : nullable
-            ? 'Nullable'
-            : optional
-              ? 'Optional'
-              : 'Required') + ' Parameter',
+          ? 'Nullable'
+          : optional
+          ? 'Optional'
+          : 'Required') + ' Parameter',
         () => {
           it(`should not parse methods that have ${PARAM_TYPE_DESCRIPTION} parameter of type 'Function'`, () => {
             expect(() => parseParamType('arg', 'Function')).toThrow(
@@ -473,10 +473,10 @@ describe('TypeScript Module Parser', () => {
               isPropNullable && isPropOptional
                 ? 'a nullable and optional'
                 : isPropNullable
-                  ? 'a nullable'
-                  : isPropOptional
-                    ? 'an optional'
-                    : 'a required';
+                ? 'a nullable'
+                : isPropOptional
+                ? 'an optional'
+                : 'a required';
 
             function annotateProp(propName: string, propType: string) {
               if (isPropNullable && isPropOptional) {
@@ -541,10 +541,10 @@ describe('TypeScript Module Parser', () => {
               (isPropNullable && isPropOptional
                 ? 'Nullable and Optional'
                 : isPropNullable
-                  ? 'Nullable'
-                  : isPropOptional
-                    ? 'Optional'
-                    : 'Required') + ' Property',
+                ? 'Nullable'
+                : isPropOptional
+                ? 'Optional'
+                : 'Required') + ' Property',
               () => {
                 describe('Props with Primitive Types', () => {
                   PRIMITIVES.forEach(([FLOW_TYPE, PARSED_TYPE_NAME]) => {
@@ -1007,10 +1007,10 @@ describe('TypeScript Module Parser', () => {
                 nullable && optional
                   ? 'a nullable and optional'
                   : nullable
-                    ? 'a nullable'
-                    : optional
-                      ? 'an optional'
-                      : 'a required';
+                  ? 'a nullable'
+                  : optional
+                  ? 'an optional'
+                  : 'a required';
 
               function annotateProp(propName: string, propType: string) {
                 if (nullable && optional) {
@@ -1076,10 +1076,10 @@ describe('TypeScript Module Parser', () => {
                 (nullable && optional
                   ? 'Nullable and Optional'
                   : nullable
-                    ? 'Nullable'
-                    : optional
-                      ? 'Optional'
-                      : 'Required') + ' Property',
+                  ? 'Nullable'
+                  : optional
+                  ? 'Optional'
+                  : 'Required') + ' Property',
                 () => {
                   /**
                    * TODO: Fill out props in promise

packages/react-native-codegen/src/parsers/typescript/parser.js

@@ -233,8 +233,8 @@ class TypeScriptParser implements Parser {
       enumMembersType === 'StringTypeAnnotation'
         ? 'StringLiteral'
         : enumMembersType === 'NumberTypeAnnotation'
-          ? 'NumericLiteral'
-          : null;
+        ? 'NumericLiteral'
+        : null;
 
     typeAnnotation.members.forEach(member => {
       const isNegative =
@@ -263,19 +263,19 @@ class TypeScriptParser implements Parser {
               value: -1 * member.initializer?.argument?.value,
             }
           : typeof member.initializer?.value === 'number'
-            ? {
-                type: 'NumberLiteralTypeAnnotation',
-                value: member.initializer?.value,
-              }
-            : typeof member.initializer?.value === 'string'
-              ? {
-                  type: 'StringLiteralTypeAnnotation',
-                  value: member.initializer?.value,
-                }
-              : {
-                  type: 'StringLiteralTypeAnnotation',
-                  value: member.id.name,
-                };
+          ? {
+              type: 'NumberLiteralTypeAnnotation',
+              value: member.initializer?.value,
+            }
+          : typeof member.initializer?.value === 'string'
+          ? {
+              type: 'StringLiteralTypeAnnotation',
+              value: member.initializer?.value,
+            }
+          : {
+              type: 'StringLiteralTypeAnnotation',
+              value: member.id.name,
+            };
 
       return {
         name: member.id.name,

packages/react-native-compatibility-check/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/compatibility-check",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "Check a React Native app's boundary between JS and Native for incompatibilities",
   "license": "MIT",
   "repository": {
@@ -29,7 +29,7 @@
     "dist"
   ],
   "dependencies": {
-    "@react-native/codegen": "0.82.0-main"
+    "@react-native/codegen": "0.81.0-main"
   },
   "devDependencies": {
     "flow-remove-types": "^2.237.2",

packages/react-native-popup-menu-android/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/popup-menu-android",
-  "version": "0.82.0-main",
+  "version": "0.81.0-main",
   "description": "PopupMenu for the Android platform",
   "main": "index.js",
   "files": [
@@ -21,7 +21,7 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "@react-native/codegen": "0.82.0-main"
+    "@react-native/codegen": "0.81.0-main"
   },
   "peerDependencies": {
     "@types/react": "^19.1.0",

packages/react-native-test-library/OSSLibraryExample.podspec

@@ -0,0 +1,24 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+require 'json'
+
+package = JSON.parse(File.read(File.join(__dir__, 'package.json')))
+
+Pod::Spec.new do |s|
+  s.name            = 'OSSLibraryExample'
+  s.version         = package['version']
+  s.summary         = package['description']
+  s.description     = package['description']
+  s.homepage        = package['homepage']
+  s.license         = package['license']
+  s.platforms       = min_supported_versions
+  s.author          = 'Meta Platforms, Inc. and its affiliates'
+  s.source          = { :git => package['repository']['url'], :tag => "#{s.version}" }
+
+  s.source_files = 'ios/**/*.{h,m,mm,cpp}'
+
+  install_modules_dependencies(s)
+end

packages/react-native-test-library/README.md

@@ -0,0 +1,9 @@
+## Important
+This package is for testing only. It is a subject to frequent change. It does not represent the recomended structure for React native libraries. It should not be used as a referece for such purposes.
+
+## Building
+```
+yarn install
+yarn build
+npx react-native codegen
+```

packages/react-native-test-library/android/build.gradle.kts

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+plugins {
+  id("com.facebook.react")
+  alias(libs.plugins.android.library)
+  alias(libs.plugins.kotlin.android)
+}
+
+android {
+  compileSdk = libs.versions.compileSdk.get().toInt()
+  buildToolsVersion = libs.versions.buildTools.get()
+  namespace = "com.facebook.react.osslibraryexample"
+
+  defaultConfig { minSdk = libs.versions.minSdk.get().toInt() }
+
+  compileOptions {
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
+  }
+
+  kotlinOptions { jvmTarget = "17" }
+}
+
+dependencies {
+  // Build React Native from source
+  implementation(project(":packages:react-native:ReactAndroid"))
+}

packages/react-native-test-library/android/gradle.properties

@@ -0,0 +1,4 @@
+
+# We want to have more fine grained control on the Java version for
+# ReactAndroid, therefore we disable RGNP Java version alignment mechanism
+react.internal.disableJavaVersionAlignment=true

packages/react-native-test-library/android/src/main/java/com/facebook/fbreact/specs/NativeSampleModuleSpec.java

@@ -0,0 +1,37 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateModuleJavaSpec.js
+ *
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.proguard.annotations.DoNotStrip;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import javax.annotation.Nonnull;
+
+public abstract class NativeSampleModuleSpec extends ReactContextBaseJavaModule implements TurboModule {
+  public static final String NAME = "NativeSampleModule";
+
+  public NativeSampleModuleSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @Override
+  public @Nonnull String getName() {
+    return NAME;
+  }
+
+  @ReactMethod(isBlockingSynchronousMethod = true)
+  @DoNotStrip
+  public abstract double getRandomNumber();
+}

packages/react-native-test-library/android/src/main/java/com/facebook/react/osslibraryexample/NativeSampleModule.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.osslibraryexample
+
+import com.facebook.fbreact.specs.NativeSampleModuleSpec
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.bridge.ReactContextBaseJavaModule
+import com.facebook.react.bridge.ReactMethod
+import com.facebook.react.module.annotations.ReactModule
+
+@ReactModule(name = NativeSampleModuleSpec.NAME)
+public class NativeSampleModule(reactContext: ReactApplicationContext?) :
+    ReactContextBaseJavaModule(reactContext) {
+
+  override fun getName(): String = NAME
+
+  private companion object {
+    const val NAME = "NativeSampleModule"
+  }
+
+  @ReactMethod
+  public fun getRandomNumber(): Int {
+    return (0..99).random()
+  }
+}

packages/react-native-test-library/android/src/main/java/com/facebook/react/osslibraryexample/OSSLibraryExamplePackage.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.osslibraryexample
+
+import com.facebook.react.ReactPackage
+import com.facebook.react.bridge.NativeModule
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.uimanager.ViewManager
+
+@Suppress("DEPRECATION")
+public class OSSLibraryExamplePackage : ReactPackage {
+  @Deprecated("Migrate to [BaseReactPackage] and implement [getModule] instead.")
+  override fun createNativeModules(reactContext: ReactApplicationContext): List<NativeModule> =
+      listOf(NativeSampleModule(reactContext))
+
+  override fun createViewManagers(reactContext: ReactApplicationContext): List<ViewManager<*, *>> =
+      listOf(SampleNativeComponentViewManager())
+}

packages/react-native-test-library/android/src/main/java/com/facebook/react/osslibraryexample/SampleNativeComponentViewManager.kt

@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.osslibraryexample
+
+import android.annotation.SuppressLint
+import android.graphics.Color
+import com.facebook.react.bridge.ReadableArray
+import com.facebook.react.module.annotations.ReactModule
+import com.facebook.react.uimanager.SimpleViewManager
+import com.facebook.react.uimanager.ThemedReactContext
+import com.facebook.react.uimanager.ViewProps
+import com.facebook.react.uimanager.annotations.ReactProp
+import com.facebook.react.viewmanagers.SampleNativeComponentManagerInterface
+
+/** Legacy View manager (non Fabric compatible) for {@link SampleNativeView} components. */
+@ReactModule(name = SampleNativeComponentViewManager.REACT_CLASS)
+internal class SampleNativeComponentViewManager :
+    SimpleViewManager<SampleNativeView>(), SampleNativeComponentManagerInterface<SampleNativeView> {
+
+  override fun getName(): String = REACT_CLASS
+
+  // @ReactProp(name = ViewProps.OPACITY, defaultFloat = 1f)
+  override fun setOpacity(view: SampleNativeView, opacity: Float) {
+    super.setOpacity(view, opacity)
+  }
+
+  @SuppressLint("BadMethodUse-android.view.View.setBackgroundColor")
+  @ReactProp(name = ViewProps.COLOR)
+  fun setColor(view: SampleNativeView, color: String) {
+    view.setBackgroundColor(Color.parseColor(color))
+  }
+
+  @ReactProp(name = "cornerRadius")
+  fun setCornerRadius(view: SampleNativeView, cornerRadius: Float) {
+    view.setCornerRadius(cornerRadius)
+  }
+
+  override fun createViewInstance(reactContext: ThemedReactContext): SampleNativeView =
+      SampleNativeView(reactContext)
+
+  @SuppressLint("BadMethodUse-android.view.View.setBackgroundColor")
+  override fun changeBackgroundColor(view: SampleNativeView, color: String) {
+    view.setBackgroundColor(Color.parseColor(color))
+  }
+
+  override fun getExportedViewConstants(): Map<String, Any> = mapOf("PI" to 3.14)
+
+  override fun getExportedCustomBubblingEventTypeConstants(): Map<String, Any> {
+    return mapOf(
+        "onColorChanged" to
+            mapOf(
+                "phasedRegistrationNames" to
+                    mapOf(
+                        "bubbled" to "onColorChanged",
+                        "captured" to "onColorChangedCapture",
+                    )),
+        "topIntArrayChanged" to
+            mapOf(
+                "phasedRegistrationNames" to
+                    mapOf(
+                        "bubbled" to "topIntArrayChanged",
+                        "captured" to "topIntArrayChangedCapture",
+                    )))
+  }
+
+  @SuppressLint("BadMethodUse-android.view.View.setBackgroundColor")
+  override fun receiveCommand(view: SampleNativeView, commandId: String, args: ReadableArray?) {
+    if (commandId.contentEquals("changeBackgroundColor")) {
+      val sentColor: Int = Color.parseColor(args?.getString(0))
+      view.setBackgroundColor(sentColor)
+    }
+  }
+
+  @Deprecated("Deprecated in Java")
+  @SuppressLint("BadMethodUse-android.view.View.setBackgroundColor")
+  @Suppress("DEPRECATION") // We intentionally want to test against the legacy API here.
+  override fun receiveCommand(view: SampleNativeView, commandId: Int, args: ReadableArray?) {
+    when (commandId) {
+      COMMAND_CHANGE_BACKGROUND_COLOR -> {
+        val sentColor: Int = Color.parseColor(args?.getString(0))
+        view.setBackgroundColor(sentColor)
+      }
+    }
+  }
+
+  override fun getCommandsMap(): Map<String, Int> =
+      mapOf("changeBackgroundColor" to COMMAND_CHANGE_BACKGROUND_COLOR)
+
+  companion object {
+    const val REACT_CLASS = "SampleNativeComponent"
+    const val COMMAND_CHANGE_BACKGROUND_COLOR = 42
+  }
+
+  @ReactProp(name = "values")
+  override fun setValues(view: SampleNativeView, value: ReadableArray?) {
+    val values = mutableListOf<Int>()
+    value?.toArrayList()?.forEach { values.add((it as Double).toInt()) }
+    view.emitOnArrayChangedEvent(values)
+  }
+}

packages/react-native-test-library/android/src/main/java/com/facebook/react/osslibraryexample/SampleNativeView.kt

@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.osslibraryexample
+
+import android.graphics.drawable.GradientDrawable
+import android.view.View
+import com.facebook.react.bridge.Arguments
+import com.facebook.react.bridge.ReactContext
+import com.facebook.react.bridge.WritableArray
+import com.facebook.react.bridge.WritableMap
+import com.facebook.react.uimanager.ThemedReactContext
+import com.facebook.react.uimanager.UIManagerHelper
+import com.facebook.react.uimanager.events.Event
+
+public class SampleNativeView(context: ThemedReactContext) : View(context) {
+  private var currentColor = 0
+  private var background: GradientDrawable = GradientDrawable()
+  private val reactContext: ReactContext = context.reactApplicationContext
+
+  override fun setBackgroundColor(color: Int) {
+    if (color != currentColor) {
+      background.setColor(color)
+      currentColor = color
+      setBackground(background)
+    }
+  }
+
+  public fun setCornerRadius(cornerRadius: Float) {
+    background.cornerRadius = cornerRadius
+    setBackground(background)
+  }
+
+  public fun emitOnArrayChangedEvent(ints: List<Int>) {
+    val newIntArray = Arguments.createArray()
+    val newBoolArray = Arguments.createArray()
+    val newFloatArray = Arguments.createArray()
+    val newDoubleArray = Arguments.createArray()
+    val newYesNoArray = Arguments.createArray()
+    val newStringArray = Arguments.createArray()
+    val newObjectArray = Arguments.createArray()
+    val newArrayArray = Arguments.createArray()
+
+    for (i in ints) {
+      newIntArray.pushInt(i * 2)
+      newBoolArray.pushBoolean(i % 2 == 1)
+      newFloatArray.pushDouble(i * 3.14)
+      newDoubleArray.pushDouble(i / 3.14)
+      newYesNoArray.pushString(if (i % 2 == 1) "yep" else "nope")
+      newStringArray.pushString(i.toString())
+
+      val latLon = Arguments.createMap()
+      latLon.putDouble("lat", -1.0 * i)
+      latLon.putDouble("lon", 2.0 * i)
+      newObjectArray.pushMap(latLon)
+
+      val innerArray: WritableArray = Arguments.createArray()
+      innerArray.pushInt(i)
+      innerArray.pushInt(i)
+      innerArray.pushInt(i)
+      newArrayArray.pushArray(innerArray)
+    }
+
+    val payload =
+        Arguments.createMap().apply {
+          putArray("values", newIntArray)
+          putArray("boolValues", newBoolArray)
+          putArray("floats", newFloatArray)
+          putArray("doubles", newDoubleArray)
+          putArray("yesNos", newYesNoArray)
+          putArray("strings", newStringArray)
+          putArray("latLons", newObjectArray)
+          putArray("multiArrays", newArrayArray)
+        }
+
+    val reactContext = context as ReactContext
+    val surfaceId = UIManagerHelper.getSurfaceId(reactContext)
+    val eventDispatcher = UIManagerHelper.getEventDispatcherForReactTag(reactContext, id)
+    val event = OnIntArrayChangedEvent(surfaceId, id, payload)
+
+    eventDispatcher?.dispatchEvent(event)
+  }
+
+  private inner class OnIntArrayChangedEvent(
+      surfaceId: Int,
+      viewId: Int,
+      private val payload: WritableMap
+  ) : Event<OnIntArrayChangedEvent>(surfaceId, viewId) {
+    override fun getEventName() = "topIntArrayChanged"
+
+    override fun getEventData() = payload
+  }
+}

packages/react-native-test-library/android/src/main/java/com/facebook/react/viewmanagers/SampleNativeComponentManagerDelegate.java

@@ -0,0 +1,45 @@
+/**
+* This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+*
+* Do not edit this file as changes may cause incorrect behavior and will be lost
+* once the code is regenerated.
+*
+* @generated by codegen project: GeneratePropsJavaDelegate.js
+*/
+
+package com.facebook.react.viewmanagers;
+
+import android.view.View;
+import androidx.annotation.Nullable;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.uimanager.BaseViewManagerDelegate;
+import com.facebook.react.uimanager.BaseViewManager;
+import com.facebook.react.uimanager.LayoutShadowNode;
+
+public class SampleNativeComponentManagerDelegate<T extends View, U extends BaseViewManager<T, ? extends LayoutShadowNode> & SampleNativeComponentManagerInterface<T>> extends BaseViewManagerDelegate<T, U> {
+  public SampleNativeComponentManagerDelegate(U viewManager) {
+    super(viewManager);
+  }
+  @Override
+  public void setProperty(T view, String propName, @Nullable Object value) {
+    switch (propName) {
+      case "opacity":
+        mViewManager.setOpacity(view, value == null ? 0f : ((Double) value).floatValue());
+        break;
+      case "values":
+        mViewManager.setValues(view, (ReadableArray) value);
+        break;
+      default:
+        super.setProperty(view, propName, value);
+    }
+  }
+
+  @Override
+  public void receiveCommand(T view, String commandName, @Nullable ReadableArray args) {
+    switch (commandName) {
+      case "changeBackgroundColor":
+        mViewManager.changeBackgroundColor(view, args.getString(0));
+        break;
+    }
+  }
+}

packages/react-native-test-library/android/src/main/java/com/facebook/react/viewmanagers/SampleNativeComponentManagerInterface.java

@@ -0,0 +1,21 @@
+/**
+* This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+*
+* Do not edit this file as changes may cause incorrect behavior and will be lost
+* once the code is regenerated.
+*
+* @generated by codegen project: GeneratePropsJavaInterface.js
+*/
+
+package com.facebook.react.viewmanagers;
+
+import android.view.View;
+import androidx.annotation.Nullable;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.uimanager.ViewManagerWithGeneratedInterface;
+
+public interface SampleNativeComponentManagerInterface<T extends View> extends ViewManagerWithGeneratedInterface  {
+  void setOpacity(T view, float value);
+  void setValues(T view, @Nullable ReadableArray value);
+  void changeBackgroundColor(T view, String color);
+}

packages/react-native-test-library/android/src/main/jni/CMakeLists.txt

@@ -0,0 +1,26 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+cmake_minimum_required(VERSION 3.13)
+set(CMAKE_VERBOSE_MAKEFILE on)
+
+file(GLOB react_codegen_SRCS CONFIGURE_DEPENDS *.cpp react/renderer/components/OSSLibraryExampleSpec/*.cpp)
+
+add_library(
+  react_codegen_OSSLibraryExampleSpec
+  OBJECT
+  ${react_codegen_SRCS}
+)
+
+target_include_directories(react_codegen_OSSLibraryExampleSpec PUBLIC . react/renderer/components/OSSLibraryExampleSpec)
+
+target_link_libraries(
+  react_codegen_OSSLibraryExampleSpec
+  fbjni
+  jsi
+  reactnative
+)
+
+target_compile_reactnative_options(react_codegen_OSSLibraryExampleSpec PRIVATE)

packages/react-native-test-library/android/src/main/jni/OSSLibraryExampleSpec-generated.cpp

@@ -0,0 +1,32 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include "OSSLibraryExampleSpec.h"
+
+namespace facebook::react {
+
+static facebook::jsi::Value __hostFunction_NativeSampleModuleSpecJSI_getRandomNumber(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  static jmethodID cachedMethodId = nullptr;
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, NumberKind, "getRandomNumber", "()D", args, count, cachedMethodId);
+}
+
+NativeSampleModuleSpecJSI::NativeSampleModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+  methodMap_["getRandomNumber"] = MethodMetadata {0, __hostFunction_NativeSampleModuleSpecJSI_getRandomNumber};
+}
+
+std::shared_ptr<TurboModule> OSSLibraryExampleSpec_ModuleProvider(const std::string &moduleName, const JavaTurboModule::InitParams &params) {
+  if (moduleName == "NativeSampleModule") {
+    return std::make_shared<NativeSampleModuleSpecJSI>(params);
+  }
+  return nullptr;
+}
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/OSSLibraryExampleSpec.h

@@ -0,0 +1,31 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateModuleJniH.js
+ */
+
+#pragma once
+
+#include <ReactCommon/JavaTurboModule.h>
+#include <ReactCommon/TurboModule.h>
+#include <jsi/jsi.h>
+
+namespace facebook::react {
+
+/**
+ * JNI C++ class for module 'NativeSampleModule'
+ */
+class JSI_EXPORT NativeSampleModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeSampleModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+
+JSI_EXPORT
+std::shared_ptr<TurboModule> OSSLibraryExampleSpec_ModuleProvider(const std::string &moduleName, const JavaTurboModule::InitParams &params);
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/ComponentDescriptors.cpp

@@ -0,0 +1,22 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateComponentDescriptorCpp.js
+ */
+
+#include "ComponentDescriptors.h"
+#include <react/renderer/core/ConcreteComponentDescriptor.h>
+#include <react/renderer/componentregistry/ComponentDescriptorProviderRegistry.h>
+
+namespace facebook::react {
+
+void OSSLibraryExampleSpec_registerComponentDescriptorsFromCodegen(
+  std::shared_ptr<const ComponentDescriptorProviderRegistry> registry) {
+registry->add(concreteComponentDescriptorProvider<SampleNativeComponentComponentDescriptor>());
+}
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/ComponentDescriptors.h

@@ -0,0 +1,24 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateComponentDescriptorH.js
+ */
+
+#pragma once
+
+#include "ShadowNodes.h"
+#include <react/renderer/core/ConcreteComponentDescriptor.h>
+#include <react/renderer/componentregistry/ComponentDescriptorProviderRegistry.h>
+
+namespace facebook::react {
+
+using SampleNativeComponentComponentDescriptor = ConcreteComponentDescriptor<SampleNativeComponentShadowNode>;
+
+void OSSLibraryExampleSpec_registerComponentDescriptorsFromCodegen(
+  std::shared_ptr<const ComponentDescriptorProviderRegistry> registry);
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/EventEmitters.cpp

@@ -0,0 +1,95 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateEventEmitterCpp.js
+ */
+
+#include "EventEmitters.h"
+
+
+namespace facebook::react {
+
+void SampleNativeComponentEventEmitter::onIntArrayChanged(OnIntArrayChanged $event) const {
+  dispatchEvent("intArrayChanged", [$event=std::move($event)](jsi::Runtime &runtime) {
+    auto $payload = jsi::Object(runtime);
+    
+    auto values = jsi::Array(runtime, $event.values.size());
+    size_t valuesIndex = 0;
+    for (auto valuesValue : $event.values) {
+      values.setValueAtIndex(runtime, valuesIndex++, valuesValue);
+    }
+    $payload.setProperty(runtime, "values", values);
+  
+
+    auto boolValues = jsi::Array(runtime, $event.boolValues.size());
+    size_t boolValuesIndex = 0;
+    for (auto boolValuesValue : $event.boolValues) {
+      boolValues.setValueAtIndex(runtime, boolValuesIndex++, (bool)boolValuesValue);
+    }
+    $payload.setProperty(runtime, "boolValues", boolValues);
+  
+
+    auto floats = jsi::Array(runtime, $event.floats.size());
+    size_t floatsIndex = 0;
+    for (auto floatsValue : $event.floats) {
+      floats.setValueAtIndex(runtime, floatsIndex++, floatsValue);
+    }
+    $payload.setProperty(runtime, "floats", floats);
+  
+
+    auto doubles = jsi::Array(runtime, $event.doubles.size());
+    size_t doublesIndex = 0;
+    for (auto doublesValue : $event.doubles) {
+      doubles.setValueAtIndex(runtime, doublesIndex++, doublesValue);
+    }
+    $payload.setProperty(runtime, "doubles", doubles);
+  
+
+    auto yesNos = jsi::Array(runtime, $event.yesNos.size());
+    size_t yesNosIndex = 0;
+    for (auto yesNosValue : $event.yesNos) {
+      yesNos.setValueAtIndex(runtime, yesNosIndex++, toString(yesNosValue));
+    }
+    $payload.setProperty(runtime, "yesNos", yesNos);
+  
+
+    auto strings = jsi::Array(runtime, $event.strings.size());
+    size_t stringsIndex = 0;
+    for (auto stringsValue : $event.strings) {
+      strings.setValueAtIndex(runtime, stringsIndex++, stringsValue);
+    }
+    $payload.setProperty(runtime, "strings", strings);
+  
+
+    auto latLons = jsi::Array(runtime, $event.latLons.size());
+    size_t latLonsIndex = 0;
+    for (auto latLonsValue : $event.latLons) {
+      auto latLonsObject = jsi::Object(runtime);
+      latLonsObject.setProperty(runtime, "lat", latLonsValue.lat);
+latLonsObject.setProperty(runtime, "lon", latLonsValue.lon);
+      latLons.setValueAtIndex(runtime, latLonsIndex++, latLonsObject);
+    }
+    $payload.setProperty(runtime, "latLons", latLons);
+  
+
+    auto multiArrays = jsi::Array(runtime, $event.multiArrays.size());
+    size_t multiArraysIndex = 0;
+    for (auto multiArraysValue : $event.multiArrays) {
+      auto multiArraysArray = jsi::Array(runtime, multiArraysValue.size());
+      size_t multiArraysIndexInternal = 0;
+      for (auto multiArraysValueInternal : multiArraysValue) {
+        multiArraysArray.setValueAtIndex(runtime, multiArraysIndexInternal++, multiArraysValueInternal);
+      }
+      multiArrays.setValueAtIndex(runtime, multiArraysIndex++, multiArraysArray);
+    }
+    $payload.setProperty(runtime, "multiArrays", multiArrays);
+  
+    return $payload;
+  });
+}
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/EventEmitters.h

@@ -0,0 +1,49 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateEventEmitterH.js
+ */
+#pragma once
+
+#include <react/renderer/components/view/ViewEventEmitter.h>
+
+
+namespace facebook::react {
+class SampleNativeComponentEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  enum class OnIntArrayChangedYesNos {
+    Yep,
+    Nope
+  };
+
+  static char const *toString(const OnIntArrayChangedYesNos value) {
+    switch (value) {
+      case OnIntArrayChangedYesNos::Yep: return "yep";
+      case OnIntArrayChangedYesNos::Nope: return "nope";
+    }
+  }
+
+  struct OnIntArrayChangedLatLons {
+      double lat;
+    double lon;
+    };
+
+  struct OnIntArrayChanged {
+      std::vector<int> values;
+    std::vector<bool> boolValues;
+    std::vector<Float> floats;
+    std::vector<double> doubles;
+    std::vector<OnIntArrayChangedYesNos> yesNos;
+    std::vector<std::string> strings;
+    std::vector<OnIntArrayChangedLatLons> latLons;
+    std::vector<std::vector<int>> multiArrays;
+    };
+  void onIntArrayChanged(OnIntArrayChanged value) const;
+};
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/OSSLibraryExampleSpecJSI-generated.cpp

@@ -0,0 +1,26 @@
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateModuleCpp.js
+ */
+
+#include "OSSLibraryExampleSpecJSI.h"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeSampleModuleCxxSpecJSI_getRandomNumber(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleModuleCxxSpecJSI *>(&turboModule)->getRandomNumber(
+    rt
+  );
+}
+
+NativeSampleModuleCxxSpecJSI::NativeSampleModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule("NativeSampleModule", jsInvoker) {
+  methodMap_["getRandomNumber"] = MethodMetadata {0, __hostFunction_NativeSampleModuleCxxSpecJSI_getRandomNumber};
+}
+
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/OSSLibraryExampleSpecJSI.h

@@ -0,0 +1,67 @@
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateModuleH.js
+ */
+
+#pragma once
+
+#include <ReactCommon/TurboModule.h>
+#include <react/bridging/Bridging.h>
+
+namespace facebook::react {
+
+
+  class JSI_EXPORT NativeSampleModuleCxxSpecJSI : public TurboModule {
+protected:
+  NativeSampleModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker);
+
+public:
+  virtual double getRandomNumber(jsi::Runtime &rt) = 0;
+
+};
+
+template <typename T>
+class JSI_EXPORT NativeSampleModuleCxxSpec : public TurboModule {
+public:
+  jsi::Value create(jsi::Runtime &rt, const jsi::PropNameID &propName) override {
+    return delegate_.create(rt, propName);
+  }
+
+  static constexpr std::string_view kModuleName = "NativeSampleModule";
+
+protected:
+  NativeSampleModuleCxxSpec(std::shared_ptr<CallInvoker> jsInvoker)
+    : TurboModule(std::string{NativeSampleModuleCxxSpec::kModuleName}, jsInvoker),
+      delegate_(reinterpret_cast<T*>(this), jsInvoker) {}
+
+
+private:
+  class Delegate : public NativeSampleModuleCxxSpecJSI {
+  public:
+    Delegate(T *instance, std::shared_ptr<CallInvoker> jsInvoker) :
+      NativeSampleModuleCxxSpecJSI(std::move(jsInvoker)), instance_(instance) {
+
+    }
+
+    double getRandomNumber(jsi::Runtime &rt) override {
+      static_assert(
+          bridging::getParameterCount(&T::getRandomNumber) == 1,
+          "Expected getRandomNumber(...) to have 1 parameters");
+
+      return bridging::callFromJs<double>(
+          rt, &T::getRandomNumber, jsInvoker_, instance_);
+    }
+
+  private:
+    friend class NativeSampleModuleCxxSpec;
+    T *instance_;
+  };
+
+  Delegate delegate_;
+};
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/Props.cpp

@@ -0,0 +1,26 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GeneratePropsCpp.js
+ */
+
+#include "Props.h"
+#include <react/renderer/core/PropsParserContext.h>
+#include <react/renderer/core/propsConversions.h>
+
+namespace facebook::react {
+
+SampleNativeComponentProps::SampleNativeComponentProps(
+    const PropsParserContext &context,
+    const SampleNativeComponentProps &sourceProps,
+    const RawProps &rawProps): ViewProps(context, sourceProps, rawProps),
+
+    opacity(convertRawProp(context, rawProps, "opacity", sourceProps.opacity, {0.0})),
+    values(convertRawProp(context, rawProps, "values", sourceProps.values, {}))
+      {}
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/Props.h

@@ -0,0 +1,29 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GeneratePropsH.js
+ */
+#pragma once
+
+#include <react/renderer/components/view/ViewProps.h>
+#include <react/renderer/core/PropsParserContext.h>
+#include <vector>
+
+namespace facebook::react {
+
+class SampleNativeComponentProps final : public ViewProps {
+ public:
+  SampleNativeComponentProps() = default;
+  SampleNativeComponentProps(const PropsParserContext& context, const SampleNativeComponentProps &sourceProps, const RawProps &rawProps);
+
+#pragma mark - Props
+
+  Float opacity{0.0};
+  std::vector<int> values{};
+};
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/ShadowNodes.cpp

@@ -0,0 +1,17 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateShadowNodeCpp.js
+ */
+
+#include "ShadowNodes.h"
+
+namespace facebook::react {
+
+extern const char SampleNativeComponentComponentName[] = "SampleNativeComponent";
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/ShadowNodes.h

@@ -0,0 +1,32 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateShadowNodeH.js
+ */
+
+#pragma once
+
+#include "EventEmitters.h"
+#include "Props.h"
+#include "States.h"
+#include <react/renderer/components/view/ConcreteViewShadowNode.h>
+#include <jsi/jsi.h>
+
+namespace facebook::react {
+
+JSI_EXPORT extern const char SampleNativeComponentComponentName[];
+
+/*
+ * `ShadowNode` for <SampleNativeComponent> component.
+ */
+using SampleNativeComponentShadowNode = ConcreteViewShadowNode<
+    SampleNativeComponentComponentName,
+    SampleNativeComponentProps,
+    SampleNativeComponentEventEmitter,
+    SampleNativeComponentState>;
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/States.cpp

@@ -0,0 +1,16 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateStateCpp.js
+ */
+#include "States.h"
+
+namespace facebook::react {
+
+
+
+} // namespace facebook::react

packages/react-native-test-library/android/src/main/jni/react/renderer/components/OSSLibraryExampleSpec/States.h

@@ -0,0 +1,29 @@
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateStateH.js
+ */
+#pragma once
+
+#ifdef RN_SERIALIZABLE_STATE
+#include <folly/dynamic.h>
+#endif
+
+namespace facebook::react {
+
+class SampleNativeComponentState {
+public:
+  SampleNativeComponentState() = default;
+
+#ifdef RN_SERIALIZABLE_STATE
+  SampleNativeComponentState(SampleNativeComponentState const &previousState, folly::dynamic data){};
+  folly::dynamic getDynamic() const {
+    return {};
+  };
+#endif
+};
+
+} // namespace facebook::react

packages/react-native-test-library/babel.config.js

@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @noflow
+ */
+
+module.exports = {
+  presets: [
+    [
+      'module:@react-native/babel-preset',
+      {disableStaticViewConfigsCodegen: false},
+    ],
+  ],
+};

packages/react-native-test-library/index.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+export {default as SampleNativeComponent} from './src/SampleNativeComponent';
+export type {NativeComponentType} from './src/SampleNativeComponent';
+import {Commands as SampleNativeComponentCommands} from './src/SampleNativeComponent';
+
+export {SampleNativeComponentCommands};
+export {default as NativeSampleModule} from './src/NativeSampleModule';

packages/react-native-test-library/ios/OSSLibraryExampleSpec/ComponentDescriptors.cpp

@@ -0,0 +1,22 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateComponentDescriptorCpp.js
+ */
+
+#include "ComponentDescriptors.h"
+#include <react/renderer/core/ConcreteComponentDescriptor.h>
+#include <react/renderer/componentregistry/ComponentDescriptorProviderRegistry.h>
+
+namespace facebook::react {
+
+void OSSLibraryExampleSpec_registerComponentDescriptorsFromCodegen(
+  std::shared_ptr<const ComponentDescriptorProviderRegistry> registry) {
+registry->add(concreteComponentDescriptorProvider<SampleNativeComponentComponentDescriptor>());
+}
+
+} // namespace facebook::react

packages/react-native-test-library/ios/OSSLibraryExampleSpec/ComponentDescriptors.h

@@ -0,0 +1,24 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateComponentDescriptorH.js
+ */
+
+#pragma once
+
+#include "ShadowNodes.h"
+#include <react/renderer/core/ConcreteComponentDescriptor.h>
+#include <react/renderer/componentregistry/ComponentDescriptorProviderRegistry.h>
+
+namespace facebook::react {
+
+using SampleNativeComponentComponentDescriptor = ConcreteComponentDescriptor<SampleNativeComponentShadowNode>;
+
+void OSSLibraryExampleSpec_registerComponentDescriptorsFromCodegen(
+  std::shared_ptr<const ComponentDescriptorProviderRegistry> registry);
+
+} // namespace facebook::react

packages/react-native-test-library/ios/OSSLibraryExampleSpec/EventEmitters.cpp

@@ -0,0 +1,95 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateEventEmitterCpp.js
+ */
+
+#include "EventEmitters.h"
+
+
+namespace facebook::react {
+
+void SampleNativeComponentEventEmitter::onIntArrayChanged(OnIntArrayChanged $event) const {
+  dispatchEvent("intArrayChanged", [$event=std::move($event)](jsi::Runtime &runtime) {
+    auto $payload = jsi::Object(runtime);
+    
+    auto values = jsi::Array(runtime, $event.values.size());
+    size_t valuesIndex = 0;
+    for (auto valuesValue : $event.values) {
+      values.setValueAtIndex(runtime, valuesIndex++, valuesValue);
+    }
+    $payload.setProperty(runtime, "values", values);
+  
+
+    auto boolValues = jsi::Array(runtime, $event.boolValues.size());
+    size_t boolValuesIndex = 0;
+    for (auto boolValuesValue : $event.boolValues) {
+      boolValues.setValueAtIndex(runtime, boolValuesIndex++, (bool)boolValuesValue);
+    }
+    $payload.setProperty(runtime, "boolValues", boolValues);
+  
+
+    auto floats = jsi::Array(runtime, $event.floats.size());
+    size_t floatsIndex = 0;
+    for (auto floatsValue : $event.floats) {
+      floats.setValueAtIndex(runtime, floatsIndex++, floatsValue);
+    }
+    $payload.setProperty(runtime, "floats", floats);
+  
+
+    auto doubles = jsi::Array(runtime, $event.doubles.size());
+    size_t doublesIndex = 0;
+    for (auto doublesValue : $event.doubles) {
+      doubles.setValueAtIndex(runtime, doublesIndex++, doublesValue);
+    }
+    $payload.setProperty(runtime, "doubles", doubles);
+  
+
+    auto yesNos = jsi::Array(runtime, $event.yesNos.size());
+    size_t yesNosIndex = 0;
+    for (auto yesNosValue : $event.yesNos) {
+      yesNos.setValueAtIndex(runtime, yesNosIndex++, toString(yesNosValue));
+    }
+    $payload.setProperty(runtime, "yesNos", yesNos);
+  
+
+    auto strings = jsi::Array(runtime, $event.strings.size());
+    size_t stringsIndex = 0;
+    for (auto stringsValue : $event.strings) {
+      strings.setValueAtIndex(runtime, stringsIndex++, stringsValue);
+    }
+    $payload.setProperty(runtime, "strings", strings);
+  
+
+    auto latLons = jsi::Array(runtime, $event.latLons.size());
+    size_t latLonsIndex = 0;
+    for (auto latLonsValue : $event.latLons) {
+      auto latLonsObject = jsi::Object(runtime);
+      latLonsObject.setProperty(runtime, "lat", latLonsValue.lat);
+latLonsObject.setProperty(runtime, "lon", latLonsValue.lon);
+      latLons.setValueAtIndex(runtime, latLonsIndex++, latLonsObject);
+    }
+    $payload.setProperty(runtime, "latLons", latLons);
+  
+
+    auto multiArrays = jsi::Array(runtime, $event.multiArrays.size());
+    size_t multiArraysIndex = 0;
+    for (auto multiArraysValue : $event.multiArrays) {
+      auto multiArraysArray = jsi::Array(runtime, multiArraysValue.size());
+      size_t multiArraysIndexInternal = 0;
+      for (auto multiArraysValueInternal : multiArraysValue) {
+        multiArraysArray.setValueAtIndex(runtime, multiArraysIndexInternal++, multiArraysValueInternal);
+      }
+      multiArrays.setValueAtIndex(runtime, multiArraysIndex++, multiArraysArray);
+    }
+    $payload.setProperty(runtime, "multiArrays", multiArrays);
+  
+    return $payload;
+  });
+}
+
+} // namespace facebook::react

packages/react-native-test-library/ios/OSSLibraryExampleSpec/EventEmitters.h

@@ -0,0 +1,49 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateEventEmitterH.js
+ */
+#pragma once
+
+#include <react/renderer/components/view/ViewEventEmitter.h>
+
+
+namespace facebook::react {
+class SampleNativeComponentEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  enum class OnIntArrayChangedYesNos {
+    Yep,
+    Nope
+  };
+
+  static char const *toString(const OnIntArrayChangedYesNos value) {
+    switch (value) {
+      case OnIntArrayChangedYesNos::Yep: return "yep";
+      case OnIntArrayChangedYesNos::Nope: return "nope";
+    }
+  }
+
+  struct OnIntArrayChangedLatLons {
+      double lat;
+    double lon;
+    };
+
+  struct OnIntArrayChanged {
+      std::vector<int> values;
+    std::vector<bool> boolValues;
+    std::vector<Float> floats;
+    std::vector<double> doubles;
+    std::vector<OnIntArrayChangedYesNos> yesNos;
+    std::vector<std::string> strings;
+    std::vector<OnIntArrayChangedLatLons> latLons;
+    std::vector<std::vector<int>> multiArrays;
+    };
+  void onIntArrayChanged(OnIntArrayChanged value) const;
+};
+} // namespace facebook::react

packages/react-native-test-library/ios/OSSLibraryExampleSpec/OSSLibraryExampleSpec-generated.mm

@@ -0,0 +1,29 @@
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateModuleObjCpp
+ *
+ * We create an umbrella header (and corresponding implementation) here since
+ * Cxx compilation in BUCK has a limitation: source-code producing genrule()s
+ * must have a single output. More files => more genrule()s => slower builds.
+ */
+
+#import "OSSLibraryExampleSpec.h"
+
+
+namespace facebook::react {
+  
+    static facebook::jsi::Value __hostFunction_NativeSampleModuleSpecJSI_getRandomNumber(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+      return static_cast<ObjCTurboModule&>(turboModule).invokeObjCMethod(rt, NumberKind, "getRandomNumber", @selector(getRandomNumber), args, count);
+    }
+
+  NativeSampleModuleSpecJSI::NativeSampleModuleSpecJSI(const ObjCTurboModule::InitParams &params)
+    : ObjCTurboModule(params) {
+      
+        methodMap_["getRandomNumber"] = MethodMetadata {0, __hostFunction_NativeSampleModuleSpecJSI_getRandomNumber};
+        
+  }
+} // namespace facebook::react

packages/react-native-test-library/ios/OSSLibraryExampleSpec/OSSLibraryExampleSpec.h

@@ -0,0 +1,49 @@
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateModuleObjCpp
+ *
+ * We create an umbrella header (and corresponding implementation) here since
+ * Cxx compilation in BUCK has a limitation: source-code producing genrule()s
+ * must have a single output. More files => more genrule()s => slower builds.
+ */
+
+#ifndef __cplusplus
+#error This file must be compiled as Obj-C++. If you are importing it, you must change your file extension to .mm.
+#endif
+
+// Avoid multiple includes of OSSLibraryExampleSpec symbols
+#ifndef OSSLibraryExampleSpec_H
+#define OSSLibraryExampleSpec_H
+
+#import <Foundation/Foundation.h>
+#import <RCTRequired/RCTRequired.h>
+#import <RCTTypeSafety/RCTConvertHelpers.h>
+#import <RCTTypeSafety/RCTTypedModuleConstants.h>
+#import <React/RCTBridgeModule.h>
+#import <React/RCTCxxConvert.h>
+#import <React/RCTManagedPointer.h>
+#import <ReactCommon/RCTTurboModule.h>
+#import <optional>
+#import <vector>
+
+
+@protocol NativeSampleModuleSpec <RCTBridgeModule, RCTTurboModule>
+
+- (NSNumber *)getRandomNumber;
+
+@end
+namespace facebook::react {
+  /**
+   * ObjC++ class for module 'NativeSampleModule'
+   */
+  class JSI_EXPORT NativeSampleModuleSpecJSI : public ObjCTurboModule {
+  public:
+    NativeSampleModuleSpecJSI(const ObjCTurboModule::InitParams &params);
+  };
+} // namespace facebook::react
+
+#endif // OSSLibraryExampleSpec_H

packages/react-native-test-library/ios/OSSLibraryExampleSpec/Props.cpp

@@ -0,0 +1,26 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GeneratePropsCpp.js
+ */
+
+#include "Props.h"
+#include <react/renderer/core/PropsParserContext.h>
+#include <react/renderer/core/propsConversions.h>
+
+namespace facebook::react {
+
+SampleNativeComponentProps::SampleNativeComponentProps(
+    const PropsParserContext &context,
+    const SampleNativeComponentProps &sourceProps,
+    const RawProps &rawProps): ViewProps(context, sourceProps, rawProps),
+
+    opacity(convertRawProp(context, rawProps, "opacity", sourceProps.opacity, {0.0})),
+    values(convertRawProp(context, rawProps, "values", sourceProps.values, {}))
+      {}
+
+} // namespace facebook::react

packages/react-native-test-library/ios/OSSLibraryExampleSpec/Props.h

@@ -0,0 +1,29 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GeneratePropsH.js
+ */
+#pragma once
+
+#include <react/renderer/components/view/ViewProps.h>
+#include <react/renderer/core/PropsParserContext.h>
+#include <vector>
+
+namespace facebook::react {
+
+class SampleNativeComponentProps final : public ViewProps {
+ public:
+  SampleNativeComponentProps() = default;
+  SampleNativeComponentProps(const PropsParserContext& context, const SampleNativeComponentProps &sourceProps, const RawProps &rawProps);
+
+#pragma mark - Props
+
+  Float opacity{0.0};
+  std::vector<int> values{};
+};
+
+} // namespace facebook::react

packages/react-native-test-library/ios/OSSLibraryExampleSpec/RCTComponentViewHelpers.h

@@ -0,0 +1,50 @@
+/**
+* This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+*
+* Do not edit this file as changes may cause incorrect behavior and will be lost
+* once the code is regenerated.
+*
+* @generated by codegen project: GenerateComponentHObjCpp.js
+*/
+
+#import <Foundation/Foundation.h>
+#import <React/RCTDefines.h>
+#import <React/RCTLog.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol RCTSampleNativeComponentViewProtocol <NSObject>
+- (void)changeBackgroundColor:(NSString *)color;
+@end
+
+RCT_EXTERN inline void RCTSampleNativeComponentHandleCommand(
+  id<RCTSampleNativeComponentViewProtocol> componentView,
+  NSString const *commandName,
+  NSArray const *args)
+{
+  if ([commandName isEqualToString:@"changeBackgroundColor"]) {
+#if RCT_DEBUG
+  if ([args count] != 1) {
+    RCTLogError(@"%@ command %@ received %d arguments, expected %d.", @"SampleNativeComponent", commandName, (int)[args count], 1);
+    return;
+  }
+#endif
+
+  NSObject *arg0 = args[0];
+#if RCT_DEBUG
+  if (!RCTValidateTypeOfViewCommandArgument(arg0, [NSString class], @"string", @"SampleNativeComponent", commandName, @"1st")) {
+    return;
+  }
+#endif
+  NSString * color = (NSString *)arg0;
+
+  [componentView changeBackgroundColor:color];
+  return;
+}
+
+#if RCT_DEBUG
+  RCTLogError(@"%@ received command %@, which is not a supported command.", @"SampleNativeComponent", commandName);
+#endif
+}
+
+NS_ASSUME_NONNULL_END

packages/react-native-test-library/ios/OSSLibraryExampleSpec/ShadowNodes.cpp

@@ -0,0 +1,17 @@
+
+/**
+ * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
+ *
+ * Do not edit this file as changes may cause incorrect behavior and will be lost
+ * once the code is regenerated.
+ *
+ * @generated by codegen project: GenerateShadowNodeCpp.js
+ */
+
+#include "ShadowNodes.h"
+
+namespace facebook::react {
+
+extern const char SampleNativeComponentComponentName[] = "SampleNativeComponent";
+
+} // namespace facebook::react