feat: merge 0.84-merge into main

.eslintignore

@@ -13,6 +13,7 @@ packages/*/dist
 packages/*/types_generated
 packages/debugger-frontend/dist/**/*
 packages/react-native-codegen/lib
+private/react-native-codegen-typescript-test/lib/**/*
 **/Pods/*
 **/*.macos.js
 **/*.windows.js

.flowconfig

@@ -74,7 +74,7 @@ module.name_mapper='^@react-native/fantom$' -> '<PROJECT_ROOT>/private/react-nat
 module.name_mapper='^@react-native/fantom/\(.*\)$' -> '<PROJECT_ROOT>/private/react-native-fantom/\1'
 module.name_mapper='^@react-native/core-cli-utils$' -> '<PROJECT_ROOT>/packages/core-cli-utils/src/index.flow.js'
 ; macOS]
-module.name_mapper='^@?[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\|xml\|ktx\)$' -> '<PROJECT_ROOT>/packages/react-native/Libraries/Image/RelativeImageStub'
+module.name_mapper='^@?[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\|xml\|ktx\|heic\|heif\)$' -> '<PROJECT_ROOT>/packages/react-native/Libraries/Image/RelativeImageStub'
 
 module.system.haste.module_ref_prefix=m#
 
@@ -103,4 +103,4 @@ untyped-import
 untyped-type-import
 
 [version]
-^0.289.0
+^0.295.0

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

@@ -28,7 +28,7 @@ runs:
         cache-read-only: "false"
         cache-encryption-key: ${{ inputs.gradle-cache-encryption-key }}
     - name: Restore Android ccache
-      uses: actions/cache/restore@v4
+      uses: actions/cache/restore@v5
       with:
         path: /github/home/.cache/ccache
         key: v2-ccache-android-${{ 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') }}
@@ -45,33 +45,36 @@ runs:
         if [[ "${{ inputs.release-type }}" == "dry-run" ]]; then
           # dry-run: we only build ARM64 to save time/resources. For release/nightlies the default is to build all archs.
           export ORG_GRADLE_PROJECT_reactNativeArchitectures="arm64-v8a,x86" # x86 is required for E2E testing
+          export HERMES_PREBUILT_FLAG="ORG_GRADLE_PROJECT_react.internal.useHermesNightly=true"
           TASKS="publishAllToMavenTempLocal build"
         elif [[ "${{ inputs.release-type }}" == "nightly" ]]; then
           # nightly: we set isSnapshot to true so artifacts are sent to the right repository on Maven Central.
           export ORG_GRADLE_PROJECT_isSnapshot="true"
+          export HERMES_PREBUILT_FLAG="ORG_GRADLE_PROJECT_react.internal.useHermesNightly=true"
           TASKS="publishAllToMavenTempLocal publishAndroidToSonatype build"
         else
           # release: we want to build all archs (default)
+          export HERMES_PREBUILT_FLAG="ORG_GRADLE_PROJECT_react.internal.useHermesStable=true"
           TASKS="publishAllToMavenTempLocal publishAndroidToSonatype build"
         fi
-        ./gradlew $TASKS -PenableWarningsAsErrors=true
+        env "$HERMES_PREBUILT_FLAG" ./gradlew $TASKS -PenableWarningsAsErrors=true
     - name: Save Android ccache
       if: ${{ github.ref == 'refs/heads/main' || contains(github.ref, '-stable') }}
-      uses: actions/cache/save@v4
+      uses: actions/cache/save@v5
       with:
         path: /github/home/.cache/ccache
         key: v2-ccache-android-${{ 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') }}
     - name: Show ccache stats
       shell: bash
       run: ccache -s -v
     - name: Upload Maven Artifacts
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
         name: maven-local
         path: /tmp/maven-local
     - name: Upload test results
       if: ${{ always() }}
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
         name: build-android-results
         compression-level: 1
@@ -81,14 +84,14 @@ runs:
           packages/react-native/ReactAndroid/build/reports
     - name: Upload RNTester APK - hermes-debug
       if: ${{ always() }}
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
         name: rntester-debug
         path: packages/rn-tester/android/app/build/outputs/apk/debug/
         compression-level: 0
     - name: Upload RNTester APK - hermes-release
       if: ${{ always() }}
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
         name: rntester-release
         path: packages/rn-tester/android/app/build/outputs/apk/release/

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

@@ -18,13 +18,13 @@ runs:
       shell: bash
       run: git config --global --add safe.directory '*'
     - name: Download ReactNativeDependencies
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v7
       with:
         pattern: ReactNativeDependencies*
         path: ./packages/react-native/ReactAndroid/external-artifacts/artifacts
         merge-multiple: true
     - name: Download ReactCore artifacts
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v7
       with:
         pattern: ReactCore*
         path: ./packages/react-native/ReactAndroid/external-artifacts/artifacts
@@ -65,7 +65,7 @@ runs:
         fi
         node ./scripts/releases-ci/publish-npm.js -t ${{ inputs.release-type }}
     - name: Upload npm logs
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
         name: npm-logs
         path: ~/.npm/_logs
@@ -80,7 +80,7 @@ runs:
 
         echo "$FILENAME" > build/react-native-package-version
     - name: Upload release package
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       if: ${{ inputs.release-type == 'dry-run' }}
       with:
         name: react-native-package

.github/actions/diff-js-api-changes/action.yml

@@ -0,0 +1,31 @@
+name: diff-js-api-changes
+description: Check for breaking changes in the public React Native JS API
+runs:
+  using: composite
+  steps:
+    - name: Compute merge base with main
+      id: merge_base
+      shell: bash
+      run: |
+        git fetch origin main
+        git fetch --deepen=500
+        echo "merge_base=$(git merge-base HEAD origin/main)" >> $GITHUB_OUTPUT
+
+    - name: Output snapshot before state for comparison
+      shell: bash
+      env:
+        SCRATCH_DIR: ${{ runner.temp }}/diff-js-api-changes
+      run: |
+        mkdir -p $SCRATCH_DIR
+        git show ${{ steps.merge_base.outputs.merge_base }}:packages/react-native/ReactNativeApi.d.ts > $SCRATCH_DIR/ReactNativeApi-before.d.ts \
+          || echo "" > $SCRATCH_DIR/ReactNativeApi-before.d.ts
+
+    - name: Run breaking change detection
+      shell: bash
+      env:
+        SCRATCH_DIR: ${{ runner.temp }}/diff-js-api-changes
+      run: |
+        node ./scripts/js-api/diff-api-snapshot \
+          $SCRATCH_DIR/ReactNativeApi-before.d.ts \
+          ./packages/react-native/ReactNativeApi.d.ts \
+          > $SCRATCH_DIR/output.json

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

@@ -22,6 +22,10 @@ inputs:
     required: false
     default: "."
     description: The directory from which metro should be started
+  emulator-arch:
+    required: false
+    default: x86
+    description: The architecture of the emulator to run
 
 runs:
   using: composite
@@ -31,7 +35,7 @@ runs:
       run: export MAESTRO_VERSION=1.40.0; curl -Ls "https://get.maestro.mobile.dev" | bash
     - name: Set up JDK 17
       if: ${{ inputs.install-java == 'true' }}
-      uses: actions/setup-java@v4
+      uses: actions/setup-java@v5
       with:
         java-version: '17'
         distribution: 'zulu'
@@ -53,7 +57,7 @@ runs:
       uses: reactivecircus/android-emulator-runner@v2
       with:
         api-level: 24
-        arch: x86
+        arch: ${{ inputs.emulator-arch }}
         ram-size: '8192M'
         heap-size: '4096M'
         disk-size: '10G'
@@ -69,16 +73,16 @@ runs:
         NORM_APP_ID=$(echo "${{ inputs.app-id }}" | tr '.' '-')
         echo "app-id=$NORM_APP_ID" >> $GITHUB_OUTPUT
     - name: Store tests result
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       if: always()
       with:
-        name: e2e_android_${{ steps.normalize-app-id.outputs.app-id }}_report_${{ inputs.flavor }}_NewArch
+        name: e2e_android_${{ steps.normalize-app-id.outputs.app-id }}_report_${{ inputs.flavor }}_${{ inputs.emulator-arch }}_NewArch
         path: |
           report.xml
           screen.mp4
     - name: Store Logs
       if: steps.run-tests.outcome == 'failure'
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
-        name: maestro-logs-android-${{ steps.normalize-app-id.outputs.app-id }}-${{ inputs.flavor }}-NewArch
+        name: maestro-logs-android-${{ steps.normalize-app-id.outputs.app-id }}-${{ inputs.flavor }}-${{ inputs.emulator-arch }}-NewArch
         path: /tmp/MaestroLogs

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

@@ -31,7 +31,7 @@ runs:
         brew tap facebook/fb
         brew install facebook/fb/idb-companion
     - name: Set up JDK 11
-      uses: actions/setup-java@v2
+      uses: actions/setup-java@v5
       with:
         java-version: '17'
         distribution: 'zulu'
@@ -66,7 +66,7 @@ runs:
           "${{ inputs.working-directory }}"
     - name: Store video record
       if: always()
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
         name: e2e_ios_${{ inputs.app-id }}_report_${{ inputs.flavor }}_NewArch
         path: |
@@ -78,7 +78,7 @@ runs:
           report.xml
     - name: Store Logs
       if: failure() && steps.run-tests.outcome == 'failure'
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
         name: maestro-logs-${{ inputs.app-id }}-${{ inputs.flavor }}-NewArch
         path: /tmp/MaestroLogs

.github/actions/prepare-hermes-v1-app/action.yml

@@ -0,0 +1,41 @@
+name: prepare-hermes-v1-app
+description: Prepares a React Native app with Hermes V1 enabled
+inputs:
+  retry-count:
+    description: 'Number of times to retry the yarn install on failure'
+runs:
+  using: composite
+  steps:
+    - name: Create new app
+      shell: bash
+      run: |
+        cd /tmp
+        npx @react-native-community/cli init RNApp --skip-install --version nightly
+
+    - name: Select latest Hermes V1 version
+      shell: bash
+      run: |
+        node "$GITHUB_WORKSPACE/.github/workflow-scripts/selectLatestHermesV1Version.js"
+
+    - name: Apply patch to enable Hermes V1
+      shell: bash
+      run: |
+        cd /tmp/RNApp
+        git apply --binary --3way --whitespace=nowarn "$GITHUB_WORKSPACE/.github/workflow-scripts/hermes-v1.patch"
+        echo "✅ Patch applied successfully"
+
+    - name: Install app dependencies with retry
+      uses: nick-fields/retry@v3
+      with:
+        timeout_minutes: 10
+        max_attempts: ${{ inputs.retry-count }}
+        retry_wait_seconds: 15
+        shell: bash
+        command: |
+          cd /tmp/RNApp
+          yarn install
+        on_retry_command: |
+          echo "Cleaning up for yarn retry..."
+          cd /tmp/RNApp
+          rm -rf node_modules yarn.lock || true
+          yarn cache clean || true

.github/actions/run-fantom-tests/action.yml

@@ -27,7 +27,7 @@ runs:
         cache-read-only: "false"
         cache-encryption-key: ${{ inputs.gradle-cache-encryption-key }}
     - name: Restore Fantom ccache
-      uses: actions/cache/restore@v4
+      uses: actions/cache/restore@v5
       with:
         path: /github/home/.cache/ccache
         key: v2-ccache-fantom-${{ github.job }}-${{ github.ref }}-${{ hashFiles(
@@ -56,7 +56,7 @@ runs:
         CXX: clang++
     - name: Save Fantom ccache
       if: ${{ github.ref == 'refs/heads/main' || contains(github.ref, '-stable') }}
-      uses: actions/cache/save@v4
+      uses: actions/cache/save@v5
       with:
         path: /github/home/.cache/ccache
         key: v2-ccache-fantom-${{ github.job }}-${{ github.ref }}-${{ hashFiles(
@@ -75,7 +75,7 @@ runs:
       run: ccache -s -v
     - name: Upload test results
       if: ${{ always() }}
-      uses: actions/upload-artifact@v4.3.4
+      uses: actions/upload-artifact@v6
       with:
         name: run-fantom-tests-results
         compression-level: 1

.github/actions/setup-node/action.yml

@@ -4,12 +4,12 @@ inputs:
   node-version:
     description: 'The node.js version to use'
     required: false
-    default: '22.14.0'
+    default: '22.11.0'
 runs:
   using: "composite"
   steps:
     - name: Setup node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ inputs.node-version }}
         cache: yarn

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

@@ -32,15 +32,15 @@ runs:
     - name: Run yarn install again, with the correct hermes version
       uses: ./.github/actions/yarn-install
     - name: Download ReactNativeDependencies
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v7
       with:
         name: ReactNativeDependencies${{ inputs.flavor }}.xcframework.tar.gz
         path: /tmp/third-party
     - name: Print third-party folder
       shell: bash
       run: ls -lR /tmp/third-party
     - name: Download React Native Prebuilds
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v7
       with:
         name: ReactCore${{ inputs.flavor }}.xcframework.tar.gz
         path: /tmp/ReactCore