Fix CQS signal readability-const-return-type in xplat/js/react-native-github/packages

Reviewed By: javache

Differential Revision: D83238455

.eslintrc.js

@@ -35,9 +35,6 @@ module.exports = {
         // Flow handles these checks for us, so they aren't required
         'no-undef': 'off',
         'no-unreachable': 'off',
-        // Throwing from function or rejecting promises with non-error values could result in unclear error stack traces and lead to harder debugging
-        'prefer-promise-reject-errors': 'error',
-        'no-throw-literal': 'error',
       },
     },
     {

.flowconfig

@@ -69,7 +69,7 @@ munge_underscores=true
 module.name_mapper='^react-native$' -> '<PROJECT_ROOT>/packages/react-native/index.js'
 module.name_mapper='^react-native/\(.*\)$' -> '<PROJECT_ROOT>/packages/react-native/\1'
 module.name_mapper='^@react-native/dev-middleware$' -> '<PROJECT_ROOT>/packages/dev-middleware'
-module.name_mapper='^@?[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\|xml\|ktx\)$' -> '<PROJECT_ROOT>/packages/react-native/Libraries/Image/RelativeImageStub'
+module.name_mapper='^@?[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\|xml\)$' -> '<PROJECT_ROOT>/packages/react-native/Libraries/Image/RelativeImageStub'
 
 module.system.haste.module_ref_prefix=m#
 
@@ -98,4 +98,4 @@ untyped-import
 untyped-type-import
 
 [version]
-^0.289.0
+^0.287.0

.github/actions/build-apple-slices-hermes/action.yml

@@ -0,0 +1,103 @@
+name: build-apple-slices-hermes
+description: This action builds hermesc for Apple platforms
+inputs:
+  hermes-version:
+    required: true
+    description: The version of Hermes
+  react-native-version:
+    required: true
+    description: The version of Hermes
+  slice:
+    required: true
+    description: The slice of hermes you want to build. It could be iphone, iphonesimulator, macos, catalyst, appletvos, appletvsimulator, xros, or xrossimulator
+  flavor:
+    required: true
+    description: The flavor we want to build. It can be Debug or Release
+runs:
+  using: composite
+  steps:
+    - name: Setup xcode
+      uses: ./.github/actions/setup-xcode
+    - name: Restore Hermes workspace
+      uses: ./.github/actions/restore-hermes-workspace
+    - name: Restore HermesC Artifact
+      uses: actions/download-artifact@v4
+      with:
+        name: hermesc-apple
+        path: ./packages/react-native/sdks/hermes/build_host_hermesc
+    - name: Restore Slice From Cache
+      id: restore-slice-cache
+      uses: actions/cache/restore@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/build_${{ inputs.slice }}_${{ inputs.flavor }}
+        key: v6-hermes-apple-${{ inputs.hermes-version }}-${{ inputs.react-native-version }}-${{ hashfiles('packages/react-native/sdks/hermes-engine/utils/build-apple-framework.sh') }}-${{ inputs.slice }}-${{ inputs.flavor }}
+    - name: Build the Hermes ${{ inputs.slice }} frameworks
+      shell: bash
+      run: |
+        cd ./packages/react-native/sdks/hermes || exit 1
+        SLICE=${{ inputs.slice }}
+        FLAVOR=${{ inputs.flavor }}
+        FINAL_PATH=build_"$SLICE"_"$FLAVOR"
+        echo "Final path for this slice is: $FINAL_PATH"
+
+        if [[ -d "$FINAL_PATH" ]]; then
+          echo "[HERMES] Skipping! Found the requested slice at $FINAL_PATH".
+          exit 0
+        fi
+
+        if [[ "$ARTIFACTS_EXIST" ]]; then
+          echo "[HERMES] Skipping! Artifacts exists already."
+          exit 0
+        fi
+
+        export RELEASE_VERSION=${{ inputs.react-native-version }}
+
+        # HermesC is used to build hermes, so it has to be executable
+        chmod +x ./build_host_hermesc/bin/hermesc
+
+        if [[ "$SLICE" == "macosx" ]]; then
+          echo "[HERMES] Building Hermes for MacOS"
+
+          chmod +x ./utils/build-mac-framework.sh
+          BUILD_TYPE="${{ inputs.flavor }}" ./utils/build-mac-framework.sh
+        else
+          echo "[HERMES] Building Hermes for iOS: $SLICE"
+
+          chmod +x ./utils/build-ios-framework.sh
+          BUILD_TYPE="${{ inputs.flavor }}" ./utils/build-ios-framework.sh "$SLICE"
+        fi
+
+        echo "Moving from build_$SLICE to $FINAL_PATH"
+        mv build_"$SLICE" "$FINAL_PATH"
+
+        # check whether everything is there
+        if [[ -d "$FINAL_PATH/lib/hermesvm.framework" ]]; then
+          echo "Successfully built hermesvm.framework for $SLICE in $FLAVOR"
+        else
+          echo "Failed to built hermesvm.framework for $SLICE in $FLAVOR"
+          exit 1
+        fi
+
+        if [[ -d "$FINAL_PATH/lib/hermesvm.framework.dSYM" ]]; then
+          echo "Successfully built hermesvm.framework.dSYM for $SLICE in $FLAVOR"
+        else
+          echo "Failed to built hermesvm.framework.dSYM for $SLICE in $FLAVOR"
+          echo "Please try again"
+          exit 1
+        fi
+    - name: Compress slices to preserve Symlinks
+      shell: bash
+      run: |
+        cd ./packages/react-native/sdks/hermes
+        tar -czv -f build_${{ matrix.slice }}_${{ matrix.flavor }}.tar.gz build_${{ matrix.slice }}_${{ matrix.flavor }}
+    - name: Upload Artifact for Slice (${{ inputs.slice }}, ${{ inputs.flavor }}}
+      uses: actions/upload-artifact@v4.3.4
+      with:
+        name: slice-${{ inputs.slice }}-${{ inputs.flavor }}
+        path: ./packages/react-native/sdks/hermes/build_${{ inputs.slice }}_${{ inputs.flavor }}.tar.gz
+    - name: Save slice cache
+      if: ${{ github.ref == 'refs/heads/main' || contains(github.ref, '-stable') }} # To avoid that the cache explode.
+      uses: actions/cache/save@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/build_${{ inputs.slice }}_${{ inputs.flavor }}
+        key: v6-hermes-apple-${{ inputs.hermes-version }}-${{ inputs.react-native-version }}-${{ hashfiles('packages/react-native/sdks/hermes-engine/utils/build-apple-framework.sh') }}-${{ inputs.SLICE }}-${{ inputs.FLAVOR }}

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

@@ -0,0 +1,227 @@
+name: build-hermes-macos
+description: This action builds hermesc for Apple platforms
+inputs:
+  hermes-version:
+    required: true
+    description: The version of Hermes
+  react-native-version:
+    required: true
+    description: The version of React Native
+  flavor:
+    required: true
+    description: The flavor we want to build. It can be Debug or Release
+runs:
+  using: composite
+  steps:
+    - name: Setup xcode
+      uses: ./.github/actions/setup-xcode
+    - name: Restore Hermes workspace
+      uses: ./.github/actions/restore-hermes-workspace
+    - name: Restore Cached Artifacts
+      uses: actions/cache/restore@v4
+      with:
+        key: v4-hermes-artifacts-${{ inputs.flavor }}-${{ inputs.hermes-version }}-${{ inputs.react-native-version }}-${{ hashFiles('./packages/react-native/sdks/hermes-engine/utils/build-apple-framework.sh') }}
+        path: |
+          /tmp/hermes/osx-bin/${{ inputs.flavor }}
+          /tmp/hermes/dSYM/${{ inputs.flavor }}
+          /tmp/hermes/hermes-runtime-darwin/hermes-ios-${{ inputs.flavor }}.tar.gz
+    - name: Check if the required artifacts already exist
+      id: check_if_apple_artifacts_are_there
+      shell: bash
+      run: |
+        FLAVOR="${{ inputs.flavor }}"
+        echo "Flavor is $FLAVOR"
+        OSX_BIN="/tmp/hermes/osx-bin/$FLAVOR"
+        DSYM="/tmp/hermes/dSYM/$FLAVOR"
+        HERMES="/tmp/hermes/hermes-runtime-darwin/hermes-ios-$FLAVOR.tar.gz"
+
+        if [[ -d "$OSX_BIN" ]] && \
+            [[ -d "$DSYM" ]] && \
+            [[ -f "$HERMES" ]]; then
+
+          echo "Artifacts are there!"
+          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
+    - name: Slice cache macosx
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      uses: actions/download-artifact@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/
+        name: slice-macosx-${{ inputs.flavor }}
+    - name: Slice cache iphoneos
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      uses: actions/download-artifact@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/
+        name: slice-iphoneos-${{ inputs.flavor }}
+    - name: Slice cache iphonesimulator
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      uses: actions/download-artifact@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/
+        name: slice-iphonesimulator-${{ inputs.flavor }}
+    - name: Slice cache appletvos
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      uses: actions/download-artifact@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/
+        name: slice-appletvos-${{ inputs.flavor }}
+    - name: Slice cache appletvsimulator
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      uses: actions/download-artifact@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/
+        name: slice-appletvsimulator-${{ inputs.flavor }}
+    - name: Slice cache catalyst
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      uses: actions/download-artifact@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/
+        name: slice-catalyst-${{ inputs.flavor }}
+    - name: Slice cache xros
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      uses: actions/download-artifact@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/
+        name: slice-xros-${{ inputs.flavor }}
+    - name: Slice cache xrsimulator
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      uses: actions/download-artifact@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/
+        name: slice-xrsimulator-${{ inputs.flavor }}
+    - name: Unzip slices
+      shell: bash
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      run: |
+        cd ./packages/react-native/sdks/hermes
+        ls -l .
+        tar -xzv -f build_catalyst_${{ matrix.flavor }}.tar.gz
+        tar -xzv -f build_iphoneos_${{ matrix.flavor }}.tar.gz
+        tar -xzv -f build_iphonesimulator_${{ matrix.flavor }}.tar.gz
+        tar -xzv -f build_appletvos_${{ matrix.flavor }}.tar.gz
+        tar -xzv -f build_appletvsimulator_${{ matrix.flavor }}.tar.gz
+        tar -xzv -f build_macosx_${{ matrix.flavor }}.tar.gz
+        tar -xzv -f build_xros_${{ matrix.flavor }}.tar.gz
+        tar -xzv -f build_xrsimulator_${{ matrix.flavor }}.tar.gz
+    - name: Move back build folders
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      shell: bash
+      run: |
+        ls -l ./packages/react-native/sdks/hermes
+        cd ./packages/react-native/sdks/hermes || exit 1
+        mv build_macosx_${{ inputs.flavor }} build_macosx
+        mv build_iphoneos_${{ inputs.flavor }} build_iphoneos
+        mv build_iphonesimulator_${{ inputs.flavor }} build_iphonesimulator
+        mv build_appletvos_${{ inputs.flavor }} build_appletvos
+        mv build_appletvsimulator_${{ inputs.flavor }} build_appletvsimulator
+        mv build_catalyst_${{ inputs.flavor }} build_catalyst
+        mv build_xros_${{ inputs.flavor }} build_xros
+        mv build_xrsimulator_${{ inputs.flavor }} build_xrsimulator
+    - name: Prepare destroot folder
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      shell: bash
+      run: |
+        cd ./packages/react-native/sdks/hermes || exit 1
+        chmod +x ./utils/build-apple-framework.sh
+        . ./utils/build-apple-framework.sh
+        prepare_dest_root_for_ci
+    - name: Create fat framework for iOS
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      shell: bash
+      run: |
+        cd ./packages/react-native/sdks/hermes || exit 1
+        echo "[HERMES] Creating the universal framework"
+        chmod +x ./utils/build-ios-framework.sh
+        ./utils/build-ios-framework.sh build_framework
+
+        chmod +x ./destroot/bin/hermesc
+    - name: Package the Hermes Apple frameworks
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      shell: bash
+      run: |
+        BUILD_TYPE="${{ inputs.flavor }}"
+        echo "Packaging Hermes Apple frameworks for $BUILD_TYPE build type"
+
+        TARBALL_OUTPUT_DIR=$(mktemp -d /tmp/hermes-tarball-output-XXXXXXXX)
+
+        TARBALL_FILENAME=$(node ./packages/react-native/scripts/hermes/get-tarball-name.js --buildType "$BUILD_TYPE")
+
+        echo "Packaging Hermes Apple frameworks for $BUILD_TYPE build type"
+
+        TARBALL_OUTPUT_PATH=$(node ./packages/react-native/scripts/hermes/create-tarball.js \
+          --inputDir ./packages/react-native/sdks/hermes \
+          --buildType "$BUILD_TYPE" \
+          --outputDir $TARBALL_OUTPUT_DIR)
+
+        echo "Hermes tarball saved to $TARBALL_OUTPUT_PATH"
+
+        mkdir -p $HERMES_TARBALL_ARTIFACTS_DIR
+        cp $TARBALL_OUTPUT_PATH $HERMES_TARBALL_ARTIFACTS_DIR/.
+
+        mkdir -p /tmp/hermes/osx-bin/${{ inputs.flavor }}
+        cp ./packages/react-native/sdks/hermes/build_macosx/bin/* /tmp/hermes/osx-bin/${{ inputs.flavor }}
+        ls -lR /tmp/hermes/osx-bin/
+    - name: Create dSYM archive
+      if: ${{ steps.check_if_apple_artifacts_are_there.outputs.ARTIFACTS_EXIST != 'true' }}
+      shell: bash
+      run: |
+        FLAVOR=${{ inputs.flavor }}
+        WORKING_DIR="/tmp/hermes_tmp/dSYM/$FLAVOR"
+
+        mkdir -p "$WORKING_DIR/macosx"
+        mkdir -p "$WORKING_DIR/catalyst"
+        mkdir -p "$WORKING_DIR/iphoneos"
+        mkdir -p "$WORKING_DIR/iphonesimulator"
+        mkdir -p "$WORKING_DIR/appletvos"
+        mkdir -p "$WORKING_DIR/appletvsimulator"
+        mkdir -p "$WORKING_DIR/xros"
+        mkdir -p "$WORKING_DIR/xrsimulator"
+
+        cd ./packages/react-native/sdks/hermes || exit 1
+
+        DSYM_FILE_PATH=lib/hermesvm.framework.dSYM
+        cp -r build_macosx/$DSYM_FILE_PATH "$WORKING_DIR/macosx/"
+        cp -r build_catalyst/$DSYM_FILE_PATH "$WORKING_DIR/catalyst/"
+        cp -r build_iphoneos/$DSYM_FILE_PATH "$WORKING_DIR/iphoneos/"
+        cp -r build_iphonesimulator/$DSYM_FILE_PATH "$WORKING_DIR/iphonesimulator/"
+        cp -r build_appletvos/$DSYM_FILE_PATH "$WORKING_DIR/appletvos/"
+        cp -r build_appletvsimulator/$DSYM_FILE_PATH "$WORKING_DIR/appletvsimulator/"
+        cp -r build_xros/$DSYM_FILE_PATH "$WORKING_DIR/xros/"
+        cp -r build_xrsimulator/$DSYM_FILE_PATH "$WORKING_DIR/xrsimulator/"
+
+        DEST_DIR="/tmp/hermes/dSYM/$FLAVOR"
+        tar -C "$WORKING_DIR" -czvf "hermesvm.framework.dSYM" .
+
+        mkdir -p "$DEST_DIR"
+        mv "hermesvm.framework.dSYM" "$DEST_DIR"
+    - name: Upload hermes dSYM artifacts
+      uses: actions/upload-artifact@v4.3.4
+      with:
+        name: hermes-dSYM-${{ inputs.flavor }}
+        path: /tmp/hermes/dSYM/${{ inputs.flavor }}
+    - name: Upload hermes Runtime artifacts
+      uses: actions/upload-artifact@v4.3.4
+      with:
+        name: hermes-darwin-bin-${{ inputs.flavor }}
+        path: /tmp/hermes/hermes-runtime-darwin/hermes-ios-${{ inputs.flavor }}.tar.gz
+    - name: Upload hermes osx artifacts
+      uses: actions/upload-artifact@v4.3.4
+      with:
+        name: hermes-osx-bin-${{ inputs.flavor }}
+        path: /tmp/hermes/osx-bin/${{ inputs.flavor }}
+    - name: Upload Hermes Artifacts
+      uses: actions/cache/save@v4
+      if: ${{ github.ref == 'refs/heads/main' || contains(github.ref, '-stable') }} # To avoid that the cache explode.
+      with:
+        key: v4-hermes-artifacts-${{ inputs.flavor }}-${{ inputs.hermes-version }}-${{ inputs.react-native-version }}-${{ hashFiles('./packages/react-native/sdks/hermes-engine/utils/build-apple-framework.sh') }}
+        path: |
+          /tmp/hermes/osx-bin/${{ inputs.flavor }}
+          /tmp/hermes/dSYM/${{ inputs.flavor }}
+          /tmp/hermes/hermes-runtime-darwin/hermes-ios-${{ inputs.flavor }}.tar.gz

.github/actions/build-hermesc-apple/action.yml

@@ -0,0 +1,39 @@
+name: build-hermesc-apple
+description: This action builds hermesc for Apple platforms
+inputs:
+  hermes-version:
+    required: true
+    description: The version of Hermes
+  react-native-version:
+    required: true
+    description: The version of React Native
+runs:
+  using: composite
+  steps:
+    - name: Setup xcode
+      uses: ./.github/actions/setup-xcode
+    - name: Restore Hermes workspace
+      uses: ./.github/actions/restore-hermes-workspace
+    - name: Hermes apple cache
+      uses: actions/cache/restore@v4
+      with:
+        path: ./packages/react-native/sdks/hermes/build_host_hermesc
+        key: v2-hermesc-apple-${{ inputs.hermes-version }}-${{ inputs.react-native-version }}
+    - name: Build HermesC Apple
+      shell: bash
+      run: |
+        cd ./packages/react-native/sdks/hermes || exit 1
+        . ./utils/build-apple-framework.sh
+        build_host_hermesc_if_needed
+    - name: Upload HermesC Artifact
+      uses: actions/upload-artifact@v4.3.4
+      with:
+        name: hermesc-apple
+        path: ./packages/react-native/sdks/hermes/build_host_hermesc
+    - name: Cache hermesc apple
+      uses: actions/cache/save@v4
+      if: ${{ github.ref == 'refs/heads/main' || contains(github.ref, '-stable') }} # To avoid that the cache explode.
+      with:
+        path: ./packages/react-native/sdks/hermes/build_host_hermesc
+        key: v2-hermesc-apple-${{ inputs.hermes-version }}-${{ inputs.react-native-version }}
+        enableCrossOsArchive: true

.github/actions/build-hermesc-linux/action.yml

@@ -0,0 +1,53 @@
+name: build-hermesc-linux
+description: This action builds hermesc for linux platforms
+inputs:
+  hermes-version:
+    required: True
+    description: The version of Hermes
+  react-native-version:
+    required: True
+    description: The version of React Native
+runs:
+  using: composite
+  steps:
+    - name: Install dependencies
+      shell: bash
+      run: |
+        sudo apt update
+        sudo apt install -y git openssh-client build-essential \
+            libreadline-dev libicu-dev jq zip python3
+
+        # Install cmake 3.28.3-1build7
+        sudo apt-get install cmake=3.28.3-1build7
+        sudo ln -sf /usr/bin/cmake /usr/local/bin/cmake
+    - name: Restore Hermes workspace
+      uses: ./.github/actions/restore-hermes-workspace
+    - name: Linux cache
+      uses: actions/cache@v4
+      with:
+        key: v1-hermes-${{ github.job }}-linux-${{ inputs.hermes-version }}-${{ inputs.react-native-version }}
+        path: |
+          /tmp/hermes/linux64-bin/
+          /tmp/hermes/hermes/destroot/
+    - name: Set up workspace
+      shell: bash
+      run: |
+        mkdir -p /tmp/hermes/linux64-bin
+    - name: Build HermesC for Linux
+      shell: bash
+      run: |
+        if [ -f /tmp/hermes/linux64-bin/hermesc ]; then
+          echo 'Skipping; Clean "/tmp/hermes/linux64-bin" to rebuild.'
+        else
+          cd /tmp/hermes
+          cmake -S hermes -B build -DHERMES_STATIC_LINK=ON -DCMAKE_BUILD_TYPE=Release -DHERMES_ENABLE_TEST_SUITE=OFF \
+            -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=True -DCMAKE_CXX_FLAGS=-s -DCMAKE_C_FLAGS=-s \
+            -DCMAKE_EXE_LINKER_FLAGS="-Wl,--whole-archive -lpthread -Wl,--no-whole-archive"
+          cmake --build build --target hermesc -j 4
+          cp /tmp/hermes/build/bin/hermesc /tmp/hermes/linux64-bin/.
+        fi
+    - name: Upload linux artifacts
+      uses: actions/upload-artifact@v4.3.4
+      with:
+        name: hermes-linux-bin
+        path: /tmp/hermes/linux64-bin

.github/actions/build-hermesc-windows/action.yml

@@ -0,0 +1,86 @@
+name: build-hermesc-windows
+description: This action builds hermesc for Windows platforms
+inputs:
+  hermes-version:
+    required: True
+    description: The version of Hermes
+  react-native-version:
+    required: True
+    description: The version of React Native
+runs:
+  using: composite
+  steps:
+    - name: Download Previous Artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-workspace
+        path: 'C:\tmp\hermes'
+    - name: Set up workspace
+      shell: powershell
+      run: |
+        mkdir -p C:\tmp\hermes\osx-bin
+        mkdir -p .\packages\react-native\sdks\hermes
+        cp -r -Force C:\tmp\hermes\hermes\* .\packages\react-native\sdks\hermes\.
+        cp -r -Force .\packages\react-native\sdks\hermes-engine\utils\* .\packages\react-native\sdks\hermes\.
+    - name: Windows cache
+      uses: actions/cache@v4
+      with:
+        key: v3-hermes-${{ github.job }}-windows-${{ inputs.hermes-version }}-${{ inputs.react-native-version }}
+        path: |
+          C:\tmp\hermes\win64-bin\
+          C:\tmp\hermes\hermes\icu\
+          C:\tmp\hermes\hermes\deps\
+          C:\tmp\hermes\hermes\build_release\
+    - name: setup-msbuild
+      uses: microsoft/setup-msbuild@v1.3.2
+    - name: Set up workspace
+      shell: powershell
+      run: |
+        New-Item -ItemType Directory -ErrorAction SilentlyContinue $Env:HERMES_WS_DIR\icu
+        New-Item -ItemType Directory -ErrorAction SilentlyContinue $Env:HERMES_WS_DIR\deps
+        New-Item -ItemType Directory -ErrorAction SilentlyContinue $Env:HERMES_WS_DIR\win64-bin
+    - name: Downgrade CMake
+      shell: powershell
+      run: choco install cmake --version 3.31.6 --force
+    - name: Build HermesC for Windows
+      shell: powershell
+      run: |
+        if (-not(Test-Path -Path $Env:HERMES_WS_DIR\win64-bin\hermesc.exe)) {
+          cd $Env:HERMES_WS_DIR\icu
+          # If Invoke-WebRequest shows a progress bar, it will fail with
+          #   Win32 internal error "Access is denied" 0x5 occurred [...]
+          $progressPreference = 'silentlyContinue'
+          Invoke-WebRequest -Uri "$Env:ICU_URL" -OutFile "icu.zip"
+          Expand-Archive -Path "icu.zip" -DestinationPath "."
+
+          cd $Env:HERMES_WS_DIR
+          Copy-Item -Path "icu\bin64\icu*.dll" -Destination "deps"
+          # Include MSVC++ 2015 redistributables
+          Copy-Item -Path "c:\windows\system32\msvcp140.dll" -Destination "deps"
+          Copy-Item -Path "c:\windows\system32\vcruntime140.dll" -Destination "deps"
+          Copy-Item -Path "c:\windows\system32\vcruntime140_1.dll" -Destination "deps"
+
+          $Env:PATH += ";$Env:CMAKE_DIR;$Env:MSBUILD_DIR"
+          $Env:ICU_ROOT = "$Env:HERMES_WS_DIR\icu"
+
+          cmake -S hermes -B build_release -G 'Visual Studio 17 2022' -Ax64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=True -DHERMES_ENABLE_WIN10_ICU_FALLBACK=OFF
+          if (-not $?) { throw "Failed to configure Hermes" }
+          echo "Running windows build..."
+          cd build_release
+          cmake --build . --target hermesc --config Release
+          if (-not $?) { throw "Failed to build Hermes" }
+
+          echo "Copying hermesc.exe to win64-bin"
+          cd $Env:HERMES_WS_DIR
+          Copy-Item -Path "build_release\bin\Release\hermesc.exe" -Destination "win64-bin"
+          # Include Windows runtime dependencies
+          Copy-Item -Path "deps\*" -Destination "win64-bin"
+        }
+        else {
+            Write-Host "Skipping; Clean c:\tmp\hermes\win64-bin to rebuild."
+        }
+    - name: Upload windows artifacts
+      uses: actions/upload-artifact@v4.3.4
+      with:
+        name: hermes-win64-bin
+        path: C:\tmp\hermes\win64-bin\

.github/actions/build-npm-package/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
+  hermes-ws-dir:
+    required: 'true'
+    description: The workspace for hermes
   gha-npm-token:
     required: false
     description: The GHA npm token, required only to publish to npm
@@ -17,6 +20,87 @@ runs:
     - name: Setup git safe folders
       shell: bash
       run: git config --global --add safe.directory '*'
+    - name: Create /tmp/hermes/osx-bin directory
+      shell: bash
+      run: mkdir -p /tmp/hermes/osx-bin
+    - name: Download osx-bin release artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-osx-bin-Release
+        path: /tmp/hermes/osx-bin/Release
+    - name: Download osx-bin debug artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-osx-bin-Debug
+        path: /tmp/hermes/osx-bin/Debug
+    - name: Download darwin-bin release artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-darwin-bin-Release
+        path: /tmp/hermes/hermes-runtime-darwin
+    - name: Download darwin-bin debug artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-darwin-bin-Debug
+        path: /tmp/hermes/hermes-runtime-darwin
+    - name: Download hermes dSYM debug artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-dSYM-Debug
+        path: /tmp/hermes/dSYM/Debug
+    - name: Download hermes dSYM release vartifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-dSYM-Release
+        path: /tmp/hermes/dSYM/Release
+    - name: Download windows-bin artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-win64-bin
+        path: /tmp/hermes/win64-bin
+    - name: Download linux-bin artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-linux-bin
+        path: /tmp/hermes/linux64-bin
+    - name: Show /tmp/hermes directory
+      shell: bash
+      run: ls -lR /tmp/hermes
+    - name: Copy Hermes binaries
+      shell: bash
+      run: |
+        mkdir -p ./packages/react-native/sdks/hermesc ./packages/react-native/sdks/hermesc/osx-bin ./packages/react-native/sdks/hermesc/win64-bin ./packages/react-native/sdks/hermesc/linux64-bin
+
+        # When build_hermes_macos runs as a matrix, it outputs
+        if [[ -d ${{ inputs.hermes-ws-dir }}/osx-bin/Release ]]; then
+          cp -r ${{ inputs.hermes-ws-dir }}/osx-bin/Release/* ./packages/react-native/sdks/hermesc/osx-bin/.
+        elif [[ -d ${{ inputs.hermes-ws-dir }}/osx-bin/Debug ]]; then
+          cp -r ${{ inputs.hermes-ws-dir }}/osx-bin/Debug/* ./packages/react-native/sdks/hermesc/osx-bin/.
+        else
+          ls ${{ inputs.hermes-ws-dir }}/osx-bin || echo "hermesc macOS artifacts directory missing."
+          echo "Could not locate macOS hermesc binary."; exit 1;
+        fi
+
+        # Sometimes, GHA creates artifacts with lowercase Debug/Release. Make sure that if it happen, we uppercase them.
+        if [[ -f "${{ inputs.hermes-ws-dir }}/hermes-runtime-darwin/hermes-ios-debug.tar.gz" ]]; then
+          mv "${{ inputs.hermes-ws-dir }}/hermes-runtime-darwin/hermes-ios-debug.tar.gz" "${{ inputs.hermes-ws-dir }}/hermes-runtime-darwin/hermes-ios-Debug.tar.gz"
+        fi
+
+        if [[ -f "${{ inputs.hermes-ws-dir }}/hermes-runtime-darwin/hermes-ios-release.tar.gz" ]]; then
+          mv "${{ inputs.hermes-ws-dir }}/hermes-runtime-darwin/hermes-ios-release.tar.gz" "${{ inputs.hermes-ws-dir }}/hermes-runtime-darwin/hermes-ios-Release.tar.gz"
+        fi
+
+        cp -r ${{ inputs.hermes-ws-dir }}/win64-bin/* ./packages/react-native/sdks/hermesc/win64-bin/.
+        cp -r ${{ inputs.hermes-ws-dir }}/linux64-bin/* ./packages/react-native/sdks/hermesc/linux64-bin/.
+
+        # Make sure the hermesc files are actually executable.
+        chmod -R +x packages/react-native/sdks/hermesc/*
+
+        mkdir -p ./packages/react-native/ReactAndroid/external-artifacts/artifacts/
+        cp ${{ inputs.hermes-ws-dir }}/hermes-runtime-darwin/hermes-ios-Debug.tar.gz ./packages/react-native/ReactAndroid/external-artifacts/artifacts/hermes-ios-debug.tar.gz
+        cp ${{ inputs.hermes-ws-dir }}/hermes-runtime-darwin/hermes-ios-Release.tar.gz ./packages/react-native/ReactAndroid/external-artifacts/artifacts/hermes-ios-release.tar.gz
+        cp ${{ inputs.hermes-ws-dir }}/dSYM/Debug/hermesvm.framework.dSYM  ./packages/react-native/ReactAndroid/external-artifacts/artifacts/hermes-framework-dSYM-debug.tar.gz
+        cp ${{ inputs.hermes-ws-dir }}/dSYM/Release/hermesvm.framework.dSYM  ./packages/react-native/ReactAndroid/external-artifacts/artifacts/hermes-framework-dSYM-release.tar.gz
     - name: Download ReactNativeDependencies
       uses: actions/download-artifact@v4
       with:

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

@@ -0,0 +1,99 @@
+name: prepare-hermes-workspace
+description: This action prepares the hermes workspace with the right hermes and react-native versions.
+inputs:
+  hermes-ws-dir:
+    required: true
+    description: The hermes dir we need to use to setup the workspace
+  hermes-version-file:
+    required: true
+    description: the path to the file that will contain the hermes version
+outputs:
+  hermes-version:
+    description: the version of Hermes tied to this run
+    value: ${{ steps.hermes-version.outputs.VERSION }}
+  react-native-version:
+    description: the version of React Native tied to this run
+    value: ${{ steps.react-native-version.outputs.VERSION }}
+runs:
+  using: composite
+  steps:
+    - name: Setup hermes version
+      shell: bash
+      id: hermes-version
+      run: |
+        mkdir -p "/tmp/hermes" "/tmp/hermes/download" "/tmp/hermes/hermes"
+
+        if [ -f "${{ inputs.hermes-version-file }}" ]; then
+          echo "Hermes Version file found! Using this version for the build:"
+          echo "VERSION=$(cat ${{ inputs.hermes-version-file }})" >> "$GITHUB_OUTPUT"
+        else
+          echo "Hermes Version file not found!!!"
+          echo "Using the last commit from main for the build:"
+          HERMES_TAG_SHA=$(git ls-remote https://github.com/facebook/hermes main | cut -f 1 | tr -d '[:space:]')
+          echo "VERSION=$HERMES_TAG_SHA" >> "$GITHUB_OUTPUT"
+        fi
+        echo "Hermes commit is $HERMES_TAG_SHA"
+
+    - name: Get react-native version
+      shell: bash
+      id: react-native-version
+      run: |
+        VERSION=$(cat packages/react-native/package.json | jq -r '.version')
+        # Save the react native version we are building in an output variable so we can use that file as part of the cache key.
+        echo "VERSION=$VERSION" >> "$GITHUB_OUTPUT"
+        echo "React Native Version is $VERSION"
+
+    - name: Cache hermes workspace
+      id: restore-hermes
+      uses: actions/cache/restore@v4
+      with:
+        path: |
+          /tmp/hermes/download/
+          /tmp/hermes/hermes/
+        key: v1-hermes-${{ steps.hermes-version.outputs.version }}
+        enableCrossOsArchive: true
+
+    # It happened while testing that a cache was created from the right folders
+    # but those folders where empty. Thus, the next check ensures that we can work with those caches.
+    - name: Check if cache was meaningful
+      id: meaningful-cache
+      shell: bash
+      run: |
+        if [[ -d /tmp/hermes/hermes ]] && [[ -n "$(ls -A /tmp/hermes/hermes)"  ]]; then
+          echo "Found a good hermes cache"
+          echo "HERMES_CACHED=true" >> "$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
+
+    - name: Download Hermes tarball
+      if: ${{ steps.meaningful-cache.outputs.HERMES_CACHED != 'true' }}
+      shell: bash
+      run: |
+        node packages/react-native/scripts/hermes/prepare-hermes-for-build ${{ github.event.pull_request.html_url }}
+        cp packages/react-native/sdks/download/* ${{ inputs.hermes-ws-dir }}/download/.
+        cp -r packages/react-native/sdks/hermes/* ${{ inputs.hermes-ws-dir }}/hermes/.
+
+        echo ${{ steps.hermes-version.outputs.version }}
+
+    - name: Upload Hermes artifact
+      uses: actions/upload-artifact@v4.3.4
+      with:
+        name: hermes-workspace
+        path: |
+          /tmp/hermes/download/
+          /tmp/hermes/hermes/
+
+    - name: Cache hermes workspace
+      uses: actions/cache/save@v4
+      if: ${{ github.ref == 'refs/heads/main' }} # To avoid that the cache explode.
+      with:
+        path: |
+          /tmp/hermes/download/
+          /tmp/hermes/hermes/
+        key: v1-hermes-${{ steps.hermes-version.outputs.version }}
+        enableCrossOsArchive: true

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

@@ -0,0 +1,16 @@
+name: restore-hermes-workspace
+description: "Restore hermes workspace that has been created in Prepare Hermes Workspace"
+runs:
+  using: composite
+  steps:
+    - name: Download Previous Artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-workspace
+        path: /tmp/hermes
+    - name: Set up workspace
+      shell: bash
+      run: |
+        mkdir -p $HERMES_OSXBIN_ARTIFACTS_DIR ./packages/react-native/sdks/hermes
+        cp -r $HERMES_WS_DIR/hermes/* ./packages/react-native/sdks/hermes/.
+        cp -r ./packages/react-native/sdks/hermes-engine/utils ./packages/react-native/sdks/hermes/.

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

@@ -5,10 +5,6 @@ inputs:
     description: 'The xcode version to use'
     required: false
     default: '16.2.0'
-  platform:
-    description: 'The platform to use. Valid values are: ios, ios-simulator, macos, mac-catalyst, tvos, tvos-simulator, xros, xros-simulator'
-    required: false
-    default: 'macos'
 runs:
   using: "composite"
   steps:
@@ -16,21 +12,3 @@ runs:
       uses: maxim-lobanov/setup-xcode@60606e260d2fc5762a71e64e74b2174e8ea3c8bd
       with:
         xcode-version: ${{ inputs.xcode-version }}
-    - name: Setup Platform ${{ inputs.platform }}
-      if: ${{ inputs.platform != 'macos' && inputs.platform != 'mac-catalyst' }}
-      shell: bash
-      run: |
-        # https://github.com/actions/runner-images/issues/12541
-        sudo xcodebuild -runFirstLaunch
-        sudo xcrun simctl list
-
-        # Install platform based on the platform
-        if [[ "${{ inputs.platform }}" == "xros" || "${{ inputs.platform }}" == "xros-simulator" ]]; then
-          sudo xcodebuild -downloadPlatform visionOS
-        elif [[ "${{ inputs.platform }}" == "tvos" || "${{ inputs.platform }}" == "tvos-simulator" ]]; then
-          sudo xcodebuild -downloadPlatform tvOS
-        else
-          sudo xcodebuild -downloadPlatform iOS
-        fi
-
-        sudo xcodebuild -runFirstLaunch

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

@@ -10,27 +10,36 @@ inputs:
   flavor:
     description: The flavor of the build. Must be one of "Debug", "Release".
     default: Debug
+  hermes-version:
+    description: The version of hermes
+    required: true
+  react-native-version:
+    description: The version of react-native
+    required: true
 runs:
   using: composite
   steps:
     - name: Setup xcode
       uses: ./.github/actions/setup-xcode
-      with:
-        platform: ios
     - 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 "$HERMES_WS_DIR"
+    - name: Download Hermes
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-darwin-bin-${{ inputs.flavor }}
+        path: /tmp/hermes/hermes-runtime-darwin/
+    - name: Print Downloaded hermes
+      shell: bash
+      run: ls -lR "$HERMES_WS_DIR"
     - name: Setup ruby
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ inputs.ruby-version }}
-    - name: Set nightly Hermes versions
-      shell: bash
-      run: |
-        node ./scripts/releases/use-hermes-nightly.js
-    - name: Run yarn install again, with the correct hermes version
-      uses: ./.github/actions/yarn-install
     - name: Download ReactNativeDependencies
       uses: actions/download-artifact@v4
       with:
@@ -57,6 +66,20 @@ runs:
           args+=(--frameworks dynamic)
         fi
 
+        # Tarball is restored with capital flavors suffix, but somehow the tarball name from JS at line 96 returns as lowercased.
+        # Let's ensure that the tarballs have the right names
+
+        if [[ -f "$HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-Debug.tar.gz" ]]; then
+          mv "$HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-Debug.tar.gz" "$HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-debug.tar.gz"
+        fi
+
+        if [[ -f "$HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-Release.tar.gz" ]]; then
+          mv "$HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-Release.tar.gz" "$HERMES_WS_DIR/hermes-runtime-darwin/hermes-ios-release.tar.gz"
+        fi
+
+        BUILD_TYPE="${{ inputs.flavor }}"
+        TARBALL_FILENAME=$(node ../../packages/react-native/scripts/hermes/get-tarball-name.js --buildType "$BUILD_TYPE")
+        export HERMES_ENGINE_TARBALL_PATH="$HERMES_WS_DIR/hermes-runtime-darwin/$TARBALL_FILENAME"
         export RCT_USE_LOCAL_RN_DEP="/tmp/third-party/ReactNativeDependencies${{ inputs.flavor }}.xcframework.tar.gz"
         export RCT_TESTONLY_RNCORE_TARBALL_PATH="/tmp/ReactCore/ReactCore${{ inputs.flavor }}.xcframework.tar.gz"
 

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

@@ -10,9 +10,18 @@ inputs:
   run-unit-tests:
     description: whether unit tests should run or not.
     default: "false"
+  hermes-tarball-artifacts-dir:
+    description: The directory where the hermes tarball artifacts are stored
+    default: /tmp/hermes/hermes-runtime-darwin
   flavor:
     description: The flavor of the build. Must be one of "Debug", "Release".
     default: Debug
+  hermes-version:
+    description: The version of hermes
+    required: true
+  react-native-version:
+    description: The version of react-native
+    required: true
   run-e2e-tests:
     description: Whether we want to run E2E tests or not
     required: false
@@ -23,25 +32,60 @@ runs:
   steps:
     - name: Setup xcode
       uses: ./.github/actions/setup-xcode
-      with:
-        platform: ios
     - name: Setup node.js
       uses: ./.github/actions/setup-node
     - name: Run yarn
       uses: ./.github/actions/yarn-install
+    - name: Download Hermes
+      uses: actions/download-artifact@v4
+      with:
+        name: hermes-darwin-bin-${{ inputs.flavor }}
+        path: ${{ inputs.hermes-tarball-artifacts-dir }}
     - name: Setup ruby
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ inputs.ruby-version }}
-    - name: Set nightly Hermes versions
-      shell: bash
-      run: |
-        node ./scripts/releases/use-hermes-nightly.js
-    - name: Run yarn install again, with the correct hermes version
-      uses: ./.github/actions/yarn-install
     - name: Prepare IOS Tests
       if: ${{ inputs.run-unit-tests == 'true' }}
       uses: ./.github/actions/prepare-ios-tests
+    - name: Set HERMES_ENGINE_TARBALL_PATH envvar if Hermes tarball is present
+      shell: bash
+      run: |
+        HERMES_TARBALL_ARTIFACTS_DIR=${{ inputs.hermes-tarball-artifacts-dir }}
+        if [ ! -d $HERMES_TARBALL_ARTIFACTS_DIR ]; then
+          echo "Hermes tarball artifacts dir not present ($HERMES_TARBALL_ARTIFACTS_DIR). Build Hermes from source."
+          exit 0
+        fi
+
+        TARBALL_FILENAME=$(node ./packages/react-native/scripts/hermes/get-tarball-name.js --buildType "${{ inputs.flavor }}")
+        TARBALL_PATH=$HERMES_TARBALL_ARTIFACTS_DIR/$TARBALL_FILENAME
+
+        echo "Looking for $TARBALL_FILENAME in $HERMES_TARBALL_ARTIFACTS_DIR"
+        echo "$TARBALL_PATH"
+
+        if [ ! -f $TARBALL_PATH ]; then
+          echo "Hermes tarball not present ($TARBALL_PATH). Build Hermes from source."
+          exit 0
+        fi
+
+        echo "Found Hermes tarball at $TARBALL_PATH"
+        echo "HERMES_ENGINE_TARBALL_PATH=$TARBALL_PATH" >> $GITHUB_ENV
+    - name: Print Hermes version
+      shell: bash
+      run: |
+        HERMES_TARBALL_ARTIFACTS_DIR=${{ inputs.hermes-tarball-artifacts-dir }}
+        TARBALL_FILENAME=$(node ./packages/react-native/scripts/hermes/get-tarball-name.js --buildType "${{ inputs.flavor }}")
+        TARBALL_PATH=$HERMES_TARBALL_ARTIFACTS_DIR/$TARBALL_FILENAME
+        if [[ -e $TARBALL_PATH ]]; then
+          tar -xf $TARBALL_PATH
+          echo 'print(HermesInternal?.getRuntimeProperties?.()["OSS Release Version"])' > test.js
+          chmod +x ./destroot/bin/hermes
+          ./destroot/bin/hermes test.js
+          rm test.js
+          rm -rf destroot
+        else
+          echo 'No Hermes tarball found.'
+        fi
     - name: Download ReactNativeDependencies
       uses: actions/download-artifact@v4
       with:
@@ -61,6 +105,7 @@ runs:
     - name: Install CocoaPods dependencies
       shell: bash
       run: |
+        export HERMES_ENGINE_TARBALL_PATH=$HERMES_ENGINE_TARBALL_PATH
         export RCT_USE_LOCAL_RN_DEP="/tmp/third-party/ReactNativeDependencies${{ inputs.flavor }}.xcframework.tar.gz"
         export RCT_TESTONLY_RNCORE_TARBALL_PATH="/tmp/ReactCore/ReactCore${{ inputs.flavor }}.xcframework.tar.gz"
 
@@ -71,7 +116,7 @@ runs:
         cd packages/rn-tester
 
         bundle install
-        bundle exec pod update hermes-engine --no-repo-update
+        bundle exec pod install
     - name: Build RNTester
       shell: bash
       run: |

.github/workflow-scripts/__tests__/createDraftRelease-test.js

@@ -121,7 +121,7 @@ describe('Create Draft Release', () => {
   });
 
   describe('#_computeBody', () => {
-    it('computes body for release when no hermes versions are passed', async () => {
+    it('computes body for release', async () => {
       const version = '0.77.1';
       const changelog = `## v${version}
 ### Breaking Changes
@@ -134,83 +134,20 @@ describe('Create Draft Release', () => {
 #### iOS
 - [PR #3436](https://github.com/facebook/react-native/pull/3436) - Some other change
 - [PR #3437](https://github.com/facebook/react-native/pull/3437) - Some other change`;
-      const body = _computeBody(changelog, version);
+      const body = _computeBody(version, changelog);
 
       expect(body).toEqual(`${changelog}
 
 ---
 
 Hermes dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${version}/hermes-ios-${version}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${version}/hermes-ios-${version}-hermes-framework-dSYM-release.tar.gz)
-
-Hermes V1 dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${version}/hermes-ios-${version}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${version}/hermes-ios-${version}-hermes-framework-dSYM-release.tar.gz)
+- [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-hermes-framework-dSYM-debug.tar.gz)
+- [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-hermes-framework-dSYM-release.tar.gz)
 
 ReactNativeDependencies dSYMs:
 - [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-debug.tar.gz)
 - [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-release.tar.gz)
 
-ReactNative Core dSYMs:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-core-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-core-release.tar.gz)
-
----
-
-You can file issues or pick requests against this release [here](https://github.com/reactwg/react-native-releases/issues/new/choose).
-
----
-
-To help you upgrade to this version, you can use the [Upgrade Helper](https://react-native-community.github.io/upgrade-helper/) ⚛️.
-
----
-
-View the whole changelog in the [CHANGELOG.md file](https://github.com/facebook/react-native/blob/main/CHANGELOG.md).`);
-    });
-
-    it('computes body for release when hermes versions are passed', async () => {
-      const version = '0.77.1';
-      const hermesVersion = '0.15.0';
-      const hermesV1Version = '250829098.0.2';
-      const changelog = `## v${version}
-### Breaking Changes
-- [PR #9012](https://github.com/facebook/react-native/pull/9012) - Some other change
-
-#### Android
-- [PR #3456](https://github.com/facebook/react-native/pull/3456) - Some other change
-- [PR #3457](https://github.com/facebook/react-native/pull/3457) - Some other change
-
-#### iOS
-- [PR #3436](https://github.com/facebook/react-native/pull/3436) - Some other change
-- [PR #3437](https://github.com/facebook/react-native/pull/3437) - Some other change`;
-      const body = _computeBody(
-        changelog,
-        version,
-        hermesVersion,
-        hermesV1Version,
-      );
-
-      expect(body).toEqual(`${changelog}
-
----
-
-Hermes dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesVersion}/hermes-ios-${hermesVersion}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesVersion}/hermes-ios-${hermesVersion}-hermes-framework-dSYM-release.tar.gz)
-
-Hermes V1 dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesV1Version}/hermes-ios-${hermesV1Version}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesV1Version}/hermes-ios-${hermesV1Version}-hermes-framework-dSYM-release.tar.gz)
-
-ReactNativeDependencies dSYMs:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-release.tar.gz)
-
-ReactNative Core dSYMs:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-core-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-core-release.tar.gz)
-
 ---
 
 You can file issues or pick requests against this release [here](https://github.com/reactwg/react-native-releases/issues/new/choose).

.github/workflow-scripts/createDraftRelease.js

@@ -40,29 +40,19 @@ function _extractChangelog(version) {
   return changelog.slice(changelogStarts, changelogEnds).join('\n').trim();
 }
 
-function _computeBody(changelog, version, hermesVersion, hermesV1Version) {
-  hermesVersion = hermesVersion ?? version;
-  hermesV1Version = hermesV1Version ?? version;
+function _computeBody(version, changelog) {
   return `${changelog}
 
 ---
 
 Hermes dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesVersion}/hermes-ios-${hermesVersion}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesVersion}/hermes-ios-${hermesVersion}-hermes-framework-dSYM-release.tar.gz)
-
-Hermes V1 dSYMS:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesV1Version}/hermes-ios-${hermesV1Version}-hermes-framework-dSYM-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/${hermesV1Version}/hermes-ios-${hermesV1Version}-hermes-framework-dSYM-release.tar.gz)
+- [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-hermes-framework-dSYM-debug.tar.gz)
+- [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-hermes-framework-dSYM-release.tar.gz)
 
 ReactNativeDependencies dSYMs:
 - [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-debug.tar.gz)
 - [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-dSYM-release.tar.gz)
 
-ReactNative Core dSYMs:
-- [Debug](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-core-debug.tar.gz)
-- [Release](https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-core-release.tar.gz)
-
 ---
 
 You can file issues or pick requests against this release [here](https://github.com/reactwg/react-native-releases/issues/new/choose).
@@ -123,13 +113,7 @@ function moveToChangelogBranch(version) {
   run(`git checkout -b changelog/v${version}`);
 }
 
-async function createDraftRelease(
-  version,
-  latest,
-  token,
-  hermesVersion,
-  hermesV1Version,
-) {
+async function createDraftRelease(version, latest, token) {
   if (version.startsWith('v')) {
     version = version.substring(1);
   }
@@ -137,7 +121,7 @@ async function createDraftRelease(
   _verifyTagExists(version);
   moveToChangelogBranch(version);
   const changelog = _extractChangelog(version);
-  const body = _computeBody(changelog, version, hermesVersion, hermesV1Version);
+  const body = _computeBody(version, changelog);
   const release = await _createDraftReleaseOnGitHub(
     version,
     body,

.github/workflow-scripts/maestro-ios.js

@@ -162,7 +162,7 @@ async function main() {
   console.info(`WORKING_DIRECTORY: ${WORKING_DIRECTORY}`);
   console.info('==============================\n');
 
-  const simulatorName = 'iPhone 16 Pro';
+  const simulatorName = 'iPhone 15 Pro';
   launchSimulator(simulatorName);
   installAppOnSimulator(APP_PATH);
   const udid = extractSimulatorUDID();

.github/workflows/bump-podfile-lock.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Setup xcode
         uses: ./.github/actions/setup-xcode
         with:
-          platform: 'ios'
+          xcode-version: '16.2.0'
       - name: Extract branch name
         run: |
           TAG="${{ github.ref_name }}";

.github/workflows/create-draft-release.yml

@@ -2,15 +2,6 @@ name: Create Draft Release
 
 on:
   workflow_call:
-    inputs:
-      hermesVersion:
-        required: false
-        type: string
-        description: The version of Hermes to use for this release (eg. 0.15.0). If not specified, it will use React Native Version
-      hermesV1Version:
-        required: false
-        type: string
-        description: The version of Hermes V1 to use for this release (eg. 250829098.0.2). If not specified, it will use React Native Version
 
 jobs:
   create-draft-release:
@@ -36,7 +27,7 @@ jobs:
             const {createDraftRelease} = require('./.github/workflow-scripts/createDraftRelease.js');
             const version = '${{ github.ref_name }}';
             const {isLatest} = require('./.github/workflow-scripts/publishTemplate.js');
-            return (await createDraftRelease(version, isLatest(), '${{secrets.REACT_NATIVE_BOT_GITHUB_TOKEN}}', ${{ inputs.hermesVersion }}, ${{ inputs.hermesV1Version }})).id;
+            return (await createDraftRelease(version, isLatest(), '${{secrets.REACT_NATIVE_BOT_GITHUB_TOKEN}}')).id;
           result-encoding: string
       - name: Upload release assets for DotSlash
         uses: actions/github-script@v6

.github/workflows/nightly.yml

@@ -21,6 +21,86 @@ jobs:
           echo "Setting release type to nightly"
           echo "RELEASE_TYPE=nightly" >> $GITHUB_OUTPUT
 
+  prepare_hermes_workspace:
+    runs-on: ubuntu-latest
+    if: github.repository == 'facebook/react-native'
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_VERSION_FILE: packages/react-native/sdks/.hermesversion
+    outputs:
+      react-native-version: ${{ steps.prepare-hermes-workspace.outputs.react-native-version }}
+      hermes-version: ${{ steps.prepare-hermes-workspace.outputs.hermes-version }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Prepare Hermes Workspace
+        id: prepare-hermes-workspace
+        uses: ./.github/actions/prepare-hermes-workspace
+        with:
+          hermes-ws-dir: ${{ env.HERMES_WS_DIR }}
+          hermes-version-file: ${{ env.HERMES_VERSION_FILE }}
+
+  build_hermesc_apple:
+    runs-on: macos-14
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Apple
+        uses: ./.github/actions/build-hermesc-apple
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
+  build_apple_slices_hermes:
+    runs-on: macos-14
+    needs: [build_hermesc_apple, prepare_hermes_workspace]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+      HERMES_OSXBIN_ARTIFACTS_DIR: /tmp/hermes/osx-bin
+      IOS_DEPLOYMENT_TARGET: "15.1"
+      XROS_DEPLOYMENT_TARGET: "1.0"
+      MAC_DEPLOYMENT_TARGET: "10.15"
+    strategy:
+      fail-fast: false
+      matrix:
+        flavor: [Debug, Release]
+        slice: [macosx, iphoneos, iphonesimulator, appletvos, appletvsimulator, catalyst, xros, xrsimulator]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build Slice
+        uses: ./.github/actions/build-apple-slices-hermes
+        with:
+          flavor: ${{ matrix.flavor }}
+          slice: ${{ matrix.slice }}
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
+  build_hermes_macos:
+    runs-on: macos-14
+    needs: [build_apple_slices_hermes, prepare_hermes_workspace]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+    continue-on-error: true
+    strategy:
+      fail-fast: false
+      matrix:
+        flavor: [Debug, Release]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build Hermes MacOS
+        uses: ./.github/actions/build-hermes-macos
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+          flavor: ${{ matrix.flavor }}
+
   prebuild_apple_dependencies:
     if: github.repository == 'facebook/react-native'
     uses: ./.github/workflows/prebuild-ios-dependencies.yml
@@ -28,10 +108,42 @@ jobs:
 
   prebuild_react_native_core:
     uses: ./.github/workflows/prebuild-ios-core.yml
-    with:
-      use-hermes-nightly: true
     secrets: inherit
-    needs: [prebuild_apple_dependencies]
+    needs: [prebuild_apple_dependencies, build_hermes_macos]
+
+  build_hermesc_linux:
+    runs-on: ubuntu-latest
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Linux
+        uses: ./.github/actions/build-hermesc-linux
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
+  build_hermesc_windows:
+    runs-on: windows-2025
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: 'C:\tmp\hermes'
+      HERMES_TARBALL_ARTIFACTS_DIR: 'C:\tmp\hermes\hermes-runtime-darwin'
+      HERMES_OSXBIN_ARTIFACTS_DIR: 'C:\tmp\hermes\osx-bin'
+      ICU_URL: "https://github.com/unicode-org/icu/releases/download/release-64-2/icu4c-64_2-Win64-MSVC2017.zip"
+      MSBUILD_DIR: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\MSBuild\Current\Bin'
+      CMAKE_DIR: 'C:\Program Files\CMake\bin'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Windows
+        uses: ./.github/actions/build-hermesc-windows
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
 
   build_android:
     runs-on: 8-core-ubuntu
@@ -60,6 +172,10 @@ jobs:
     needs:
       [
         set_release_type,
+        prepare_hermes_workspace,
+        build_hermes_macos,
+        build_hermesc_linux,
+        build_hermesc_windows,
         build_android,
         prebuild_apple_dependencies,
         prebuild_react_native_core,
@@ -72,6 +188,7 @@ jobs:
         # By default we only build ARM64 to save time/resources. For release/nightlies, we override this value to build all archs.
         ORG_GRADLE_PROJECT_reactNativeArchitectures: "arm64-v8a"
     env:
+      HERMES_WS_DIR: /tmp/hermes
       GHA_NPM_TOKEN: ${{ secrets.GHA_NPM_TOKEN }}
       ORG_GRADLE_PROJECT_SIGNING_PWD: ${{ secrets.ORG_GRADLE_PROJECT_SIGNING_PWD }}
       ORG_GRADLE_PROJECT_SIGNING_KEY: ${{ secrets.ORG_GRADLE_PROJECT_SIGNING_KEY }}
@@ -83,6 +200,7 @@ jobs:
       - name: Build and Publish NPM Package
         uses: ./.github/actions/build-npm-package
         with:
+          hermes-ws-dir: ${{ env.HERMES_WS_DIR }}
           release-type: ${{ needs.set_release_type.outputs.RELEASE_TYPE }}
           gha-npm-token: ${{ env.GHA_NPM_TOKEN }}
           gradle-cache-encryption-key: ${{ secrets.GRADLE_CACHE_ENCRYPTION_KEY }}

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

@@ -2,16 +2,11 @@ name: Prebuild iOS Dependencies
 
 on:
   workflow_call: # this directive allow us to call this workflow from other workflows
-    inputs:
-      use-hermes-nightly:
-        description: 'Whether to use the hermes nightly build or read the version from the versions.properties file'
-        type: boolean
-        required: false
-        default: false
+
 
 jobs:
   build-rn-slice:
-    runs-on: macos-15
+    runs-on: macos-14
     strategy:
       fail-fast: false
       matrix:
@@ -37,20 +32,39 @@ jobs:
         if: steps.restore-ios-slice.outputs.cache-hit != 'true'
         uses: ./.github/actions/setup-xcode
         with:
-          platform: ${{ matrix.slice }}
+          xcode-version: '16.2.0'
       - name: Yarn Install
         if: steps.restore-ios-slice.outputs.cache-hit != 'true'
         uses: ./.github/actions/yarn-install
-      - name: Set Hermes version
+      - name: Download Hermes
+        if: steps.restore-ios-slice.outputs.cache-hit != 'true'
+        uses: actions/download-artifact@v4
+        with:
+          name: hermes-darwin-bin-${{ matrix.flavor }}
+          path: /tmp/hermes/hermes-runtime-darwin
+      - name: Extract Hermes
+        if: steps.restore-ios-slice.outputs.cache-hit != 'true'
         shell: bash
         run: |
-          if [ "${{ inputs.use-hermes-nightly }}" == "true" ]; then
-            HERMES_VERSION="nightly"
-          else
-            HERMES_VERSION=$(sed -n 's/^HERMES_VERSION_NAME=//p' packages/react-native/sdks/hermes-engine/version.properties)
+          HERMES_TARBALL_ARTIFACTS_DIR=/tmp/hermes/hermes-runtime-darwin
+          if [ ! -d $HERMES_TARBALL_ARTIFACTS_DIR ]; then
+            echo "Hermes tarball artifacts dir not present ($HERMES_TARBALL_ARTIFACTS_DIR)."
+            exit 0
           fi
-          echo "Using Hermes version: $HERMES_VERSION"
-          echo "HERMES_VERSION=$HERMES_VERSION" >> $GITHUB_ENV
+
+          TARBALL_FILENAME=$(node ./packages/react-native/scripts/hermes/get-tarball-name.js --buildType "${{ matrix.flavor }}")
+          TARBALL_PATH=$HERMES_TARBALL_ARTIFACTS_DIR/$TARBALL_FILENAME
+
+          echo "Looking for $TARBALL_FILENAME in $HERMES_TARBALL_ARTIFACTS_DIR"
+          echo "$TARBALL_PATH"
+
+          if [ ! -f $TARBALL_PATH ]; then
+            echo "Hermes tarball not present ($TARBALL_PATH). Build Hermes from source."
+            exit 0
+          fi
+
+          echo "Found Hermes tarball at $TARBALL_PATH"
+          echo "HERMES_ENGINE_TARBALL_PATH=$TARBALL_PATH" >> $GITHUB_ENV
       - name: Download ReactNativeDependencies
         uses: actions/download-artifact@v4
         with:
@@ -109,7 +123,7 @@ jobs:
             packages/react-native/.build/headers
 
   compose-xcframework:
-    runs-on: macos-15
+    runs-on: macos-14
     needs: [build-rn-slice]
     strategy:
       fail-fast: false

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

@@ -7,7 +7,7 @@ on:
 jobs:
   prepare_workspace:
     name: Prepare workspace
-    runs-on: macos-15
+    runs-on: macos-14
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -18,7 +18,7 @@ jobs:
         uses: actions/cache/restore@v4
         with:
           path: packages/react-native/third-party/
-          key: v3-ios-dependencies-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
+          key: v2-ios-dependencies-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
           enableCrossOsArchive: true
       - name: Yarn Install
         if: steps.restore-ios-prebuilds.outputs.cache-hit != 'true'
@@ -40,13 +40,13 @@ jobs:
         uses: actions/cache/save@v4
         if: ${{ github.ref == 'refs/heads/main' }} # To avoid that the cache explode
         with:
-          key: v3-ios-dependencies-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
+          key: v2-ios-dependencies-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
           enableCrossOsArchive: true
           path: packages/react-native/third-party/
 
   build-apple-slices:
     name: Build Apple Slice
-    runs-on: macos-15
+    runs-on: macos-14
     needs: [prepare_workspace]
     strategy:
       fail-fast: false
@@ -65,17 +65,16 @@ jobs:
         uses: actions/checkout@v4
       - name: Setup node.js
         uses: ./.github/actions/setup-node
+      - name: Setup xcode
+        uses: ./.github/actions/setup-xcode
+        with:
+          xcode-version: '16.1'
       - name: Restore slice folder
         id: restore-slice-folder
         uses: actions/cache/restore@v4
         with:
           path: packages/react-native/third-party/.build/Build/Products
-          key: v3-ios-dependencies-slice-folder-${{ matrix.slice }}-${{ matrix.flavor }}-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
-      - name: Setup xcode
-        if: steps.restore-slice-folder.outputs.cache-hit != 'true'
-        uses: ./.github/actions/setup-xcode
-        with:
-          platform: ${{ matrix.slice }}
+          key: v2-ios-dependencies-slice-folder-${{ matrix.slice }}-${{ matrix.flavor }}-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
       - name: Yarn Install
         if: steps.restore-slice-folder.outputs.cache-hit != 'true'
         uses: ./.github/actions/yarn-install
@@ -86,8 +85,15 @@ jobs:
           name: ios-prebuilds-workspace
           path: packages/react-native/third-party/
       - name: Print third-party folder structure
-        if: steps.restore-slice-folder.outputs.cache-hit != 'true'
         run: ls -lR packages/react-native/third-party
+      - name: Install VisionOS
+        if: ${{ steps.restore-slice-folder.outputs.cache-hit != 'true' && (matrix.slice == 'xros' || matrix.slice == 'xros-simulator') }}
+        run: |
+          # https://github.com/actions/runner-images/issues/10559
+          sudo xcodebuild -runFirstLaunch
+          sudo xcrun simctl list
+          sudo xcodebuild -downloadPlatform visionOS
+          sudo xcodebuild -runFirstLaunch
       - name: Build slice ${{ matrix.slice }} for ${{ matrix.flavor }}
         if: steps.restore-slice-folder.outputs.cache-hit != 'true'
         run:  node scripts/releases/prepare-ios-prebuilds.js -b -p ${{ matrix.slice }} -r ${{ matrix.flavor }}
@@ -101,14 +107,14 @@ jobs:
         uses: actions/cache/save@v4
         if: ${{ github.ref == 'refs/heads/main' }} # To avoid that the cache explode
         with:
-          key: v3-ios-dependencies-slice-folder-${{ matrix.slice }}-${{ matrix.flavor }}-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
+          key: v2-ios-dependencies-slice-folder-${{ matrix.slice }}-${{ matrix.flavor }}-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
           enableCrossOsArchive: true
           path: |
             packages/react-native/third-party/.build/Build/Products
 
   create-xcframework:
     name: Prepare XCFramework
-    runs-on: macos-15
+    runs-on: macos-14
     needs: [build-apple-slices]
     strategy:
       fail-fast: false
@@ -132,7 +138,7 @@ jobs:
         with:
           path: |
             packages/react-native/third-party/
-          key: v3-ios-dependencies-xcframework-${{ matrix.flavor }}-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
+          key: v2-ios-dependencies-xcframework-${{ matrix.flavor }}-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
       # If cache hit, we already have our binary. We don't need to do anything.
       - name: Yarn Install
         if: steps.restore-xcframework.outputs.cache-hit != 'true'
@@ -194,4 +200,4 @@ jobs:
           path: |
             packages/react-native/third-party/ReactNativeDependencies${{ matrix.flavor }}.xcframework.tar.gz
             packages/react-native/third-party/ReactNativeDependencies${{ matrix.flavor }}.framework.dSYM.tar.gz
-          key: v3-ios-dependencies-xcframework-${{ matrix.flavor }}-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}
+          key: v2-ios-dependencies-xcframework-${{ matrix.flavor }}-${{ hashfiles('scripts/releases/ios-prebuild/configuration.js') }}

.github/workflows/publish-release.yml

@@ -19,27 +19,84 @@ jobs:
           echo "Setting release type to release"
           echo "RELEASE_TYPE=release" >> $GITHUB_OUTPUT
 
-  set_hermes_versions:
+  prepare_hermes_workspace:
     runs-on: ubuntu-latest
     if: github.repository == 'facebook/react-native'
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_VERSION_FILE: packages/react-native/sdks/.hermesversion
     outputs:
-      HERMES_VERSION: ${{ steps.set_hermes_versions.outputs.HERMES_VERSION }}
-      HERMES_V1_VERSION: ${{ steps.set_hermes_versions.outputs.HERMES_V1_VERSION }}
+      react-native-version: ${{ steps.prepare-hermes-workspace.outputs.react-native-version }}
+      hermes-version: ${{ steps.prepare-hermes-workspace.outputs.hermes-version }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - id: set_hermes_versions
-        run: |
-          echo "Setting hermes versions to latest"
-          hermes_version=$(grep -oE 'HERMES_VERSION_NAME=([0-9]+\.[0-9]+\.[0-9]+)' packages/react-native/sdks/hermes-engine/version.properties | cut -d'=' -f2)
-          hermes_v1_version=$(grep -oE 'HERMES_V1_VERSION_NAME=([0-9]+\.[0-9]+\.[0-9]+)' packages/react-native/sdks/hermes-engine/version.properties | cut -d'=' -f2)
+      - name: Prepare Hermes Workspace
+        id: prepare-hermes-workspace
+        uses: ./.github/actions/prepare-hermes-workspace
+        with:
+          hermes-ws-dir: ${{ env.HERMES_WS_DIR }}
+          hermes-version-file: ${{ env.HERMES_VERSION_FILE }}
 
-          echo "HERMES_VERSION=$hermes_version" >> $GITHUB_OUTPUT
-          echo "HERMES_V1_VERSION=$hermes_v1_version" >> $GITHUB_OUTPUT
-      - name: Print hermes versions
-        run: |
-          echo "HERMES_VERSION=${{ steps.set_hermes_versions.outputs.HERMES_VERSION }}"
-          echo "HERMES_V1_VERSION=${{ steps.set_hermes_versions.outputs.HERMES_V1_VERSION }}"
+  build_hermesc_apple:
+    runs-on: macos-14
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Apple
+        uses: ./.github/actions/build-hermesc-apple
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.output.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.output.react-native-version }}
+  build_apple_slices_hermes:
+    runs-on: macos-14
+    needs: [build_hermesc_apple, prepare_hermes_workspace]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+      HERMES_OSXBIN_ARTIFACTS_DIR: /tmp/hermes/osx-bin
+      IOS_DEPLOYMENT_TARGET: "15.1"
+      XROS_DEPLOYMENT_TARGET: "1.0"
+      MAC_DEPLOYMENT_TARGET: "10.15"
+    strategy:
+      fail-fast: false
+      matrix:
+        flavor: [Debug, Release]
+        slice: [macosx, iphoneos, iphonesimulator, appletvos, appletvsimulator, catalyst, xros, xrsimulator]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build Slice
+        uses: ./.github/actions/build-apple-slices-hermes
+        with:
+          flavor: ${{ matrix.flavor }}
+          slice: ${{ matrix.slice}}
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
+  build_hermes_macos:
+    runs-on: macos-14
+    needs: [build_apple_slices_hermes, prepare_hermes_workspace]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+    continue-on-error: true
+    strategy:
+      fail-fast: false
+      matrix:
+        flavor: [Debug, Release]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build Hermes MacOS
+        uses: ./.github/actions/build-hermes-macos
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+          flavor: ${{ matrix.flavor }}
 
   prebuild_apple_dependencies:
     if: github.repository == 'facebook/react-native'
@@ -49,13 +106,51 @@ jobs:
   prebuild_react_native_core:
     uses: ./.github/workflows/prebuild-ios-core.yml
     secrets: inherit
-    needs: [prebuild_apple_dependencies]
+    needs: [prebuild_apple_dependencies, build_hermes_macos]
+
+  build_hermesc_linux:
+    runs-on: ubuntu-latest
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Linux
+        uses: ./.github/actions/build-hermesc-linux
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
+  build_hermesc_windows:
+    runs-on: windows-2025
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: 'C:\tmp\hermes'
+      HERMES_TARBALL_ARTIFACTS_DIR: 'C:\tmp\hermes\hermes-runtime-darwin'
+      HERMES_OSXBIN_ARTIFACTS_DIR: 'C:\tmp\hermes\osx-bin'
+      ICU_URL: "https://github.com/unicode-org/icu/releases/download/release-64-2/icu4c-64_2-Win64-MSVC2017.zip"
+      MSBUILD_DIR: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\MSBuild\Current\Bin'
+      CMAKE_DIR: 'C:\Program Files\CMake\bin'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Windows
+        uses: ./.github/actions/build-hermesc-windows
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
 
   build_npm_package:
     runs-on: 8-core-ubuntu
     needs:
       [
         set_release_type,
+        prepare_hermes_workspace,
+        build_hermes_macos,
+        build_hermesc_linux,
+        build_hermesc_windows,
         prebuild_apple_dependencies,
         prebuild_react_native_core,
       ]
@@ -67,6 +162,7 @@ jobs:
         # By default we only build ARM64 to save time/resources. For release/nightlies, we override this value to build all archs.
         ORG_GRADLE_PROJECT_reactNativeArchitectures: "arm64-v8a"
     env:
+      HERMES_WS_DIR: /tmp/hermes
       GHA_NPM_TOKEN: ${{ secrets.GHA_NPM_TOKEN }}
       ORG_GRADLE_PROJECT_SIGNING_PWD: ${{ secrets.ORG_GRADLE_PROJECT_SIGNING_PWD }}
       ORG_GRADLE_PROJECT_SIGNING_KEY: ${{ secrets.ORG_GRADLE_PROJECT_SIGNING_KEY }}
@@ -82,6 +178,7 @@ jobs:
       - name: Build and Publish NPM Package
         uses: ./.github/actions/build-npm-package
         with:
+          hermes-ws-dir: ${{ env.HERMES_WS_DIR }}
           release-type: ${{ needs.set_release_type.outputs.RELEASE_TYPE }}
           gha-npm-token: ${{ env.GHA_NPM_TOKEN }}
           gradle-cache-encryption-key: ${{ secrets.GRADLE_CACHE_ENCRYPTION_KEY }}
@@ -139,9 +236,6 @@ jobs:
     secrets: inherit
 
   create_draft_release:
-    needs: [generate_changelog, set_hermes_versions]
+    needs: generate_changelog
     uses: ./.github/workflows/create-draft-release.yml
     secrets: inherit
-    with:
-      hermesVersion: ${{ needs.set_hermes_versions.outputs.HERMES_VERSION }}
-      hermesV1Version: ${{ needs.set_hermes_versions.outputs.HERMES_V1_VERSION }}

.github/workflows/test-all.yml

@@ -33,6 +33,86 @@ jobs:
 
           echo "Should I run E2E tests? ${{ inputs.run-e2e-tests }}"
 
+  prepare_hermes_workspace:
+    runs-on: ubuntu-latest
+    if: github.repository == 'facebook/react-native'
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_VERSION_FILE: packages/react-native/sdks/.hermesversion
+    outputs:
+      react-native-version: ${{ steps.prepare-hermes-workspace.outputs.react-native-version }}
+      hermes-version: ${{ steps.prepare-hermes-workspace.outputs.hermes-version }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Prepare Hermes Workspace
+        id: prepare-hermes-workspace
+        uses: ./.github/actions/prepare-hermes-workspace
+        with:
+          hermes-ws-dir: ${{ env.HERMES_WS_DIR }}
+          hermes-version-file: ${{ env.HERMES_VERSION_FILE }}
+
+  build_hermesc_apple:
+    runs-on: macos-14
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Apple
+        uses: ./.github/actions/build-hermesc-apple
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
+  build_apple_slices_hermes:
+    runs-on: macos-14
+    needs: [build_hermesc_apple, prepare_hermes_workspace]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+      HERMES_OSXBIN_ARTIFACTS_DIR: /tmp/hermes/osx-bin
+      IOS_DEPLOYMENT_TARGET: "15.1"
+      XROS_DEPLOYMENT_TARGET: "1.0"
+      MAC_DEPLOYMENT_TARGET: "10.15"
+    strategy:
+      fail-fast: false
+      matrix:
+        flavor: [Debug, Release]
+        slice: [macosx, iphoneos, iphonesimulator, appletvos, appletvsimulator, catalyst, xros, xrsimulator]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build Slice
+        uses: ./.github/actions/build-apple-slices-hermes
+        with:
+          flavor: ${{ matrix.flavor }}
+          slice: ${{ matrix.slice}}
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
+  build_hermes_macos:
+    runs-on: macos-14
+    needs: [build_apple_slices_hermes, prepare_hermes_workspace]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+    continue-on-error: true
+    strategy:
+      fail-fast: false
+      matrix:
+        flavor: [Debug, Release]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build Hermes MacOS
+        uses: ./.github/actions/build-hermes-macos
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+          flavor: ${{ matrix.flavor }}
+
   prebuild_apple_dependencies:
     if: github.repository == 'facebook/react-native'
     uses: ./.github/workflows/prebuild-ios-dependencies.yml
@@ -40,15 +120,16 @@ jobs:
 
   prebuild_react_native_core:
     uses: ./.github/workflows/prebuild-ios-core.yml
-    with:
-      use-hermes-nightly: ${{ !endsWith(github.ref_name, '-stable') }}
     secrets: inherit
-    needs: [prebuild_apple_dependencies]
+    needs: [prebuild_apple_dependencies, build_hermes_macos]
 
   test_ios_rntester_ruby_3_2_0:
-    runs-on: macos-15
+    runs-on: macos-14
     needs:
-      [prebuild_apple_dependencies, prebuild_react_native_core]
+      [build_apple_slices_hermes, prepare_hermes_workspace, build_hermes_macos, prebuild_apple_dependencies, prebuild_react_native_core]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -56,12 +137,17 @@ jobs:
         uses: ./.github/actions/test-ios-rntester
         with:
           ruby-version: "3.2.0"
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
           flavor: Debug
 
   test_ios_rntester:
-    runs-on: macos-15-large
+    runs-on: macos-14-large
     needs:
-      [prebuild_apple_dependencies, prebuild_react_native_core]
+      [build_apple_slices_hermes, prepare_hermes_workspace, build_hermes_macos, prebuild_apple_dependencies, prebuild_react_native_core]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
     continue-on-error: true
     strategy:
       fail-fast: false
@@ -75,12 +161,17 @@ jobs:
         uses: ./.github/actions/test-ios-rntester
         with:
           use-frameworks: ${{ matrix.frameworks }}
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
           flavor: ${{ matrix.flavor }}
 
   test_e2e_ios_rntester:
-    runs-on: macos-15-large
+    runs-on: macos-14-large
     needs:
       [test_ios_rntester]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
     strategy:
       fail-fast: false
       matrix:
@@ -99,8 +190,6 @@ jobs:
         run: ls -lR /tmp/RNTesterBuild
       - name: Setup xcode
         uses: ./.github/actions/setup-xcode
-        with:
-          platform: ios
       - name: Run E2E Tests
         uses: ./.github/actions/maestro-ios
         with:
@@ -110,8 +199,11 @@ jobs:
           flavor: ${{ matrix.flavor }}
 
   test_e2e_ios_templateapp:
-    runs-on: macos-15-large
+    runs-on: macos-14-large
     needs: [build_npm_package, prebuild_apple_dependencies]
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
     strategy:
       fail-fast: false
       matrix:
@@ -121,8 +213,6 @@ jobs:
         uses: actions/checkout@v4
       - name: Setup xcode
         uses: ./.github/actions/setup-xcode
-        with:
-          platform: ios
       - name: Setup node.js
         uses: ./.github/actions/setup-node
       - name: Run yarn
@@ -131,6 +221,11 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: 2.6.10
+      - name: Download Hermes
+        uses: actions/download-artifact@v4
+        with:
+          name: hermes-darwin-bin-${{matrix.flavor}}
+          path: /tmp/react-native-tmp
       - name: Download React Native Package
         uses: actions/download-artifact@v4
         with:
@@ -164,6 +259,9 @@ jobs:
           REACT_NATIVE_PKG=$(find /tmp/react-native-tmp -type f -name "*.tgz")
           echo "React Native tgs is $REACT_NATIVE_PKG"
 
+          HERMES_PATH=$(find /tmp/react-native-tmp -type f -name "*.tar.gz")
+          echo "Hermes path is $HERMES_PATH"
+
           # For stable branches, we want to use the stable branch of the template
           # In all the other cases, we want to use "main"
           BRANCH=${{ github.ref_name }}
@@ -180,7 +278,7 @@ jobs:
           export RCT_USE_LOCAL_RN_DEP=/tmp/third-party/ReactNativeDependencies${{ matrix.flavor }}.xcframework.tar.gz
           # Disable prebuilds for now, as they are causing issues with E2E tests for 0.82-stable branch
           # export RCT_TESTONLY_RNCORE_TARBALL_PATH="/tmp/ReactCore/ReactCore${{ matrix.flavor }}.xcframework.tar.gz"
-          RCT_NEW_ARCH_ENABLED=$NEW_ARCH_ENABLED bundle exec pod install
+          HERMES_ENGINE_TARBALL_PATH=$HERMES_PATH RCT_NEW_ARCH_ENABLED=$NEW_ARCH_ENABLED bundle exec pod install
 
           xcodebuild \
             -scheme "RNTestProject" \
@@ -266,6 +364,21 @@ jobs:
           flavor: ${{ matrix.flavor }}
           working-directory: /tmp/RNTestProject
 
+  build_hermesc_linux:
+    runs-on: ubuntu-latest
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: /tmp/hermes
+      HERMES_TARBALL_ARTIFACTS_DIR: /tmp/hermes/hermes-runtime-darwin
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Linux
+        uses: ./.github/actions/build-hermesc-linux
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
   run_fantom_tests:
     runs-on: 8-core-ubuntu
     needs: [set_release_type]
@@ -285,6 +398,25 @@ jobs:
           release-type: ${{ needs.set_release_type.outputs.RELEASE_TYPE }}
           gradle-cache-encryption-key: ${{ secrets.GRADLE_CACHE_ENCRYPTION_KEY }}
 
+  build_hermesc_windows:
+    runs-on: windows-2025
+    needs: prepare_hermes_workspace
+    env:
+      HERMES_WS_DIR: 'C:\tmp\hermes'
+      HERMES_TARBALL_ARTIFACTS_DIR: 'C:\tmp\hermes\hermes-runtime-darwin'
+      HERMES_OSXBIN_ARTIFACTS_DIR: 'C:\tmp\hermes\osx-bin'
+      ICU_URL: "https://github.com/unicode-org/icu/releases/download/release-64-2/icu4c-64_2-Win64-MSVC2017.zip"
+      MSBUILD_DIR: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\MSBuild\Current\Bin'
+      CMAKE_DIR: 'C:\Program Files\CMake\bin'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build HermesC Windows
+        uses: ./.github/actions/build-hermesc-windows
+        with:
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
+
   build_android:
     runs-on: 8-core-ubuntu
     needs: [set_release_type]
@@ -339,6 +471,10 @@ jobs:
     needs:
       [
         set_release_type,
+        prepare_hermes_workspace,
+        build_hermes_macos,
+        build_hermesc_linux,
+        build_hermesc_windows,
         build_android,
         prebuild_apple_dependencies,
         prebuild_react_native_core,
@@ -348,12 +484,15 @@ jobs:
       env:
         TERM: "dumb"
         GRADLE_OPTS: "-Dorg.gradle.daemon=false"
+    env:
+      HERMES_WS_DIR: /tmp/hermes
     steps:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Build NPM Package
         uses: ./.github/actions/build-npm-package
         with:
+          hermes-ws-dir: ${{ env.HERMES_WS_DIR }}
           release-type: ${{ needs.set_release_type.outputs.RELEASE_TYPE }}
           gradle-cache-encryption-key: ${{ secrets.GRADLE_CACHE_ENCRYPTION_KEY }}
 
@@ -396,12 +535,6 @@ jobs:
           cache-encryption-key: ${{ secrets.GRADLE_CACHE_ENCRYPTION_KEY }}
       - name: Run yarn install
         uses: ./.github/actions/yarn-install
-      - name: Set nightly Hermes versions
-        shell: bash
-        run: |
-          node ./scripts/releases/use-hermes-nightly.js
-      - name: Run yarn install again, with the correct hermes version
-        uses: ./.github/actions/yarn-install
       - name: Prepare the Helloworld application
         shell: bash
         run: node ./scripts/e2e/init-project-e2e.js --useHelloWorld --pathToLocalReactNative "$GITHUB_WORKSPACE/build/$(cat build/react-native-package-version)"
@@ -422,10 +555,11 @@ jobs:
           compression-level: 0
 
   test_ios_helloworld_with_ruby_3_2_0:
-    runs-on: macos-15
-    needs: [prebuild_apple_dependencies, prebuild_react_native_core]
+    runs-on: macos-14
+    needs: [prepare_hermes_workspace, build_hermes_macos, prebuild_apple_dependencies, prebuild_react_native_core] # prepare_hermes_workspace must be there because we need its reference to retrieve a couple of outputs
     env:
       PROJECT_NAME: iOSTemplateProject
+      HERMES_WS_DIR: /tmp/hermes
       YARN_ENABLE_IMMUTABLE_INSTALLS: false
     steps:
       - name: Checkout
@@ -434,10 +568,12 @@ jobs:
         with:
           ruby-version: 3.2.0
           flavor: Debug
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
 
   test_ios_helloworld:
-    runs-on: macos-15
-    needs: [prebuild_apple_dependencies, prebuild_react_native_core]
+    runs-on: macos-14
+    needs: [prepare_hermes_workspace, build_hermes_macos, prebuild_apple_dependencies, prebuild_react_native_core] # prepare_hermes_workspace must be there because we need its reference to retrieve a couple of outputs
     strategy:
       matrix:
         flavor: [Debug, Release]
@@ -448,6 +584,7 @@ jobs:
             use_frameworks: StaticLibraries
     env:
       PROJECT_NAME: iOSTemplateProject
+      HERMES_WS_DIR: /tmp/hermes
       YARN_ENABLE_IMMUTABLE_INSTALLS: false
     steps:
       - name: Checkout
@@ -456,6 +593,8 @@ jobs:
         with:
           flavor: ${{ matrix.flavor }}
           use-frameworks: ${{ matrix.use_frameworks }}
+          hermes-version: ${{ needs.prepare_hermes_workspace.outputs.hermes-version }}
+          react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
 
   test_js:
     runs-on: ubuntu-latest

CHANGELOG-0.7x.md

@@ -1,14 +1,5 @@
 # Changelog (pre 0.80)
 
-## v0.79.7
-
-### Fixed
-
-#### Android specific
-
-- **Layout:** Make missing parent view state in updateLayout a soft error ([56ad8d9bfd](https://github.com/facebook/react-native/commit/56ad8d9bfd08ea70bc6f5726a2b4a6afb6d2d7c2) by [@javache](https://github.com/javache))
-- **Layout:** Make missing parent view state in updateLayout a soft error ([f2e47d8dab](https://github.com/facebook/react-native/commit/f2e47d8dabcd61621ea81c86cd1e2488948c4229) by [@cipolleschi](https://github.com/cipolleschi))
-
 ## v0.79.6
 
 ### Added

CHANGELOG.md

@@ -1,18 +1,97 @@
 # Changelog
 
-## v0.82.1
+## v0.81.4
+
+### Fixed
+
+#### iOS specific
+
+- Fix regression that skips artifacts code generation ([f6f5ea0b2e](https://github.com/facebook/react-native/commit/f6f5ea0b2eed894725d8f6e8bd045c99c3182026) by [@kitten](https://github.com/kitten))
+- Reapplied "Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source" ([bb73315a3f](https://github.com/facebook/react-native/commit/bb73315a3fd8cd203c4ddb3ffa10bfec307c7e92) by [@kitten](https://github.com/kitten))
+
+## v0.82.0-rc.4
+
+### Fixed
+
+- **Hermes V1:** Fixed coordinates for Hermes V1 artifacts ([674fb77d93](https://github.com/facebook/react-native/commit/674fb77d93dfe67a5fe90449dc71b195b1851e13) by [@j-piasecki](https://github.com/j-piasecki))
+
+#### iOS specific
+
+- **Switch:** Fix Switch layout to work with iOS26 ([91d427fe52](https://github.com/facebook/react-native/commit/91d427fe52a307f9aa8579912ef956d61808dad2) by [@cipolleschi](https://github.com/cipolleschi))
+
+## v0.82.0-rc.3
+
+### Added
+
+- **Hermes V1:** Added a dependency on hermes-compiler ([0caf8e70d5](https://github.com/facebook/react-native/commit/0caf8e70d53f611a73ad9b55879dfe0a5f036371) by [@j-piasecki](https://github.com/j-piasecki))
 
 ### Fixed
 
 #### Android specific
 
-- Fixed representation of transforms when view is originally zero-sized ([a81e94a40c](https://github.com/facebook/react-native/commit/a81e94a40ca8dca9e57b562db21f8f235c5b25a0) by [@javache](https://github.com/javache))
+- **Hermes V1:** Changed the coordinates of hermes artifacts when using Hermes V1 ([d0fb33822d](https://github.com/facebook/react-native/commit/d0fb33822de38183895c8b3421f46966909beaf3) by [@j-piasecki](https://github.com/j-piasecki))
 
 #### iOS specific
 
-- Fixed issue when using gnu coreutils cp command when using precompiled binaries causing compilation error ([068ec39aea](https://github.com/facebook/react-native/commit/068ec39aea543617e5159fe22274b294bfb29026) by [@chrfalch](https://github.com/chrfalch))
+- **Codegen:** Fix regression that skips artifacts code generation ([f6f5ea0b2e](https://github.com/facebook/react-native/commit/f6f5ea0b2eed894725d8f6e8bd045c99c3182026) by [@kitten](https://github.com/kitten))
 
-## v0.82.0
+## v0.81.3
+
+### Fixed
+
+#### iOS specific
+
+- Reverted "Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source" ([537e3ad930](https://github.com/facebook/react-native/commit/537e3ad93041c0cef959f0d20586fe97818900a6) by [@gabrieldonadel](https://github.com/gabrieldonadel))
+
+## v0.81.2
+
+### Added
+
+#### Android specific
+
+- Create a debugOptimized buildType for Android ([5e3edafec6](https://github.com/facebook/react-native/commit/5e3edafec6c69558521061dced7a6bcd046576b0) by [@cortinico](https://github.com/cortinico))
+- Add `useNativeEqualsInNativeReadableArrayAndroid` and `useNativeTransformHelperAndroid` feature flag to the experimental channel. This should alleviate some of the perf issue users are seeing on Android + Reanimated + NewArch on 0.81([a346096da8](https://github.com/facebook/react-native/commit/a346096da81fccf5fbc82d83bfc128695e6ec3a5) by [@cortinico](https://github.com/cortinico))
+
+### Fixed
+
+#### iOS specific
+
+- Fix Node scripts related to prebuilt tarball extraction for paths containing whitespaces ([366f2ad505](https://github.com/facebook/react-native/commit/366f2ad5057ffecc1f5b211f6aae29567ae6b7e5) by [@kitten](https://github.com/kitten))
+- Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source ([a2eb29e5e7](https://github.com/facebook/react-native/commit/a2eb29e5e7aef8bbdf4c647c8467b5292b013b20) by [@kitten](https://github.com/kitten))
+
+## v0.82.0-rc.1
+
+### Added
+
+#### Android specific
+
+- **Hermes V1:** Added opt-in to use the new Hermes ([3e9990f860](https://github.com/facebook/react-native/commit/3e9990f860eb9380837ef431ca02def32c4261ad) by [@j-piasecki](https://github.com/j-piasecki))
+
+#### iOS specific
+
+- **Hermes V1:** Added opt-in to use the new Hermes ([e9cdc308b4](https://github.com/facebook/react-native/commit/e9cdc308b4c04753d85757e8877ac00c3c687b95) by [@j-piasecki](https://github.com/j-piasecki))
+
+### Changed
+
+- **Hermes V1:** Changed the source of hermesc binary to be an npm package ([2e0bd13a25](https://github.com/facebook/react-native/commit/2e0bd13a2533fe7ab64125a95b9215b806018c6e) by [@j-piasecki](https://github.com/j-piasecki))
+
+### Deprecated
+
+- **APIs:** Deprecate legacy javascript react native apis ([e7aeea26bd](https://github.com/facebook/react-native/commit/e7aeea26bde6e9cda0a3a0a55fc2a0421fb0c0e5) by [@RSNara](https://github.com/RSNara))
+
+### Fixed
+
+#### Android specific
+
+- **Build From Source:** Fix build from source due to missing folder error on Gradle 9.0 ([9fbce3eff1](https://github.com/facebook/react-native/commit/9fbce3eff18060f16e796badc415ba733ede19af) by [@cortinico](https://github.com/cortinico))
+
+#### iOS specific
+
+- **RCTAlertController:** Simplify RCTAlertController, don't create additional UIWindow ([05c4321b19](https://github.com/facebook/react-native/commit/05c4321b194c3d0e146b6085bcaccc75acd3fd67) by [@okwasniewski](https://github.com/okwasniewski))
+- **Prebuild:** Fix Node scripts related to prebuilt tarball extraction for paths containing whitespaces ([9731e8ebc5](https://github.com/facebook/react-native/commit/9731e8ebc5ea87526a91b9903172639e062cd920) by [@kitten](https://github.com/kitten))
+- **Prebuild:** Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source ([f170db412b](https://github.com/facebook/react-native/commit/f170db412b3ab46fd0894d5d66431d9c230cd3a8) by [@kitten](https://github.com/kitten))
+
+## v0.82.0-rc.0
 
 ### Breaking
 
@@ -20,7 +99,6 @@
 - **`CxxSharedModuleWrapper`:** Removed CxxSharedModuleWrapper ([fafbee2402](https://github.com/facebook/react-native/commit/fafbee240235ea0e63eb01abd31ce32d6a576429) by [@javache](https://github.com/javache))
 - **DOM API:** Enable DOM APIs in host component refs ([2ad845ccb2](https://github.com/facebook/react-native/commit/2ad845ccb2fea277e05513dcf41407026a8224f0) by [@rubennorte](https://github.com/rubennorte))
 - **Error Handling:** Unhandled promises are now handled by ExceptionsManager.handleException, instead of being swallowed as Logbox Warnings. ([c4082c9ce2](https://github.com/facebook/react-native/commit/c4082c9ce208a324c2d011823ca2ba432411aafc) by [@krystofwoldrich](https://github.com/krystofwoldrich))
-- **InteractionManager:** InteractionManager has been deprecated and no longer respects interaction handles. Instead, it is now recommended to avoid executing long-running JavaScript tasks by breaking them up into smaller tasks and scheduling them using `requestIdleCallback()`. ([03d9f34a82](https://github.com/facebook/react-native/commit/03d9f34a8252456d389d9f9a3bd04b99a2828c16) by [@yungsters](https://github.com/yungsters))
 - **`shouldEmitW3CPointerEvents`:** Migrate `shouldPressibilityUseW3CPointerEventsForHover` to common private feature flags and remove `shouldEmitW3CPointerEvents` flag. ([fb4587780e](https://github.com/facebook/react-native/commit/fb4587780e8d6111139d73598a9a26ff392dee28) by [@coado](https://github.com/coado))
 - **TurboModuleUtils:** Remove unused ReactCommon/TurboModuleUtils functions #deepCopyJSIObject and #deepCopyJSIArray ([ead669ade3](https://github.com/facebook/react-native/commit/ead669ade31ee703c407f96c0ce98d8f2991bdc8) by [@christophpurrer](https://github.com/christophpurrer))
 - **TurboModules:** Delete old location of CallbackWrapper.h / LongLivedObject.h by ([cb94e71](https://github.com/facebook/react-native/commit/cb94e71845259ae7fa823eb4d21cde74fccd7435) [@christophpurrer](https://github.com/christophpurrer))
@@ -44,7 +122,6 @@
 - **API:** Expose NativeComponentRegistry API as JavaScript root export ([f936780cd5](https://github.com/facebook/react-native/commit/f936780cd5c0c17797f9d2bbc8f5cee81c2eefce) by [@zhongwuzw](https://github.com/zhongwuzw))
 - **API:** Expose `ReactNativeVersion` API as JavaScript root export ([ec5638abd0](https://github.com/facebook/react-native/commit/ec5638abd0e872be62b6ea5d8df9bed6335c2191) by [@huntie](https://github.com/huntie))
 - **Codegen:** Added getDebugProps to codegen ([e547f466ee](https://github.com/facebook/react-native/commit/e547f466ee41415a75ec6b6f910171285ee7bfc3) by [@cipolleschi](https://github.com/cipolleschi))
-- **Hermes V1:** Added a dependency on hermes-compiler ([0caf8e70d5](https://github.com/facebook/react-native/commit/0caf8e70d53f611a73ad9b55879dfe0a5f036371) by [@j-piasecki](https://github.com/j-piasecki))
 - **Pressable:** Allow setting `blockNativeResponder` on Pressable ([6e4d23ded2](https://github.com/facebook/react-native/commit/6e4d23ded2da4a717bafcc032e3d7a0a5fbe3731) by [@zeyap](https://github.com/zeyap))
 - **Yoga/API:** Make yoga/Yoga.h an umbrell header ([8ed2cee80e](https://github.com/facebook/react-native/commit/8ed2cee80e0aaac2f2a6a897ba450888f274a5a4) by [@rudybear](https://github.com/rudybear))
 
@@ -54,23 +131,18 @@
 - **DevMenu:** Add long-press back as an option to open the DevMenu for devices that lack menu & fast-forward. ([32d37f03ad](https://github.com/facebook/react-native/commit/32d37f03ad05290205a4f04d756f6e1880c4ff89) by [@sbuggay](https://github.com/sbuggay))
 - **DevTools:** `DevSupportManager::openDebugger` now supports an optional `panel` param determining the starting panel ([7eb3536728](https://github.com/facebook/react-native/commit/7eb3536728c4a20f7e51245f4f7b64aa505bd799) by [@huntie](https://github.com/huntie))
 - **DevTools:** Adds a landing view parameter to opening RNDT, enabling arbitrary view focus on launch. ([635c707eec](https://github.com/facebook/react-native/commit/635c707eec18f6d2ceceac2dcee9f458f17f8aab) by [@sbuggay](https://github.com/sbuggay))
-- **Hermes V1:** Added opt-in to use the new Hermes ([3e9990f860](https://github.com/facebook/react-native/commit/3e9990f860eb9380837ef431ca02def32c4261ad) by [@j-piasecki](https://github.com/j-piasecki))
 - **HWInput:** Channel up/down hardware events. ([c2a3e4420e](https://github.com/facebook/react-native/commit/c2a3e4420e07147f9a040a665da98dbe22b87a2a) by [@sbuggay](https://github.com/sbuggay))
 - **Manifest:** Add support to specify a single Manifest rather than 2 (main/debug) by using the `usesCleartextTraffic` manifest placeholder which is autoconfigured by RNGP. ([d89acc1596](https://github.com/facebook/react-native/commit/d89acc1596345534882938d2bbf40275a6cb89bd) by [@cortinico](https://github.com/cortinico))
 
 #### iOS specific
 
 - **API:** Add deprecation message for RCTAppdelegate APIs ([d503ea4efc](https://github.com/facebook/react-native/commit/d503ea4efc84b6511cef2a46421a16e044862e88) by [@cipolleschi](https://github.com/cipolleschi))
-- **Fabric:** Add invalidation callback for non-recycled component instances ([dc4a6d2c7e](https://github.com/facebook/react-native/commit/dc4a6d2c7e2ed421b61929896f60b1a864a60d97) by [@kkafar](https://github.com/kkafar))
-- **Hermes V1:** Added opt-in to use the new Hermes ([e9cdc308b4](https://github.com/facebook/react-native/commit/e9cdc308b4c04753d85757e8877ac00c3c687b95) by [@j-piasecki](https://github.com/j-piasecki))
 - **New Architecture:** Add warning if RCT_NEW_ARCH_ENABLED is set to 0 ([7d0bef2f25](https://github.com/facebook/react-native/commit/7d0bef2f25a206d917e7f5cc2b9a6c088f13a832) by [@cipolleschi](https://github.com/cipolleschi))
-- **New Architecture:** Crash the app if they force the legacy architecture. ([dc132a4fd4](https://github.com/facebook/react-native/commit/dc132a4fd4ca8dc28dc7dbb2406ac67dac1a0ee7) by [@cipolleschi](https://github.com/cipolleschi))
 
 ### Changed
 
 - **Font:** Enabled `enableFontScaleChangesUpdatingLayout` feature flag by default ([686d14f1d1](https://github.com/facebook/react-native/commit/686d14f1d16c2f02720104ddd395f7d27c908350) by [@j-piasecki](https://github.com/j-piasecki))
 - **Hermes:** Changed names of hermes binaries ([776fca1e7c](https://github.com/facebook/react-native/commit/776fca1e7c978a2d8f817d042836073e4dcb4e0e) by [@j-piasecki](https://github.com/j-piasecki))
-- **Hermes V1:** Changed the source of hermesc binary to be an npm package ([2e0bd13a25](https://github.com/facebook/react-native/commit/2e0bd13a2533fe7ab64125a95b9215b806018c6e) by [@j-piasecki](https://github.com/j-piasecki))
 - **Metro:** Bump Metro to ^0.83.1 ([840fd6c83f](https://github.com/facebook/react-native/commit/840fd6c83f45326a796bf2823f8c2fa942aed06c) by [@robhogan](https://github.com/robhogan))
 - **React:** Bumped React to 19.1.1 ([ec5a98b1f5](https://github.com/facebook/react-native/commit/ec5a98b1f5c2137f5f6ff5f5f6706f20384c44df) by [@cipolleschi](https://github.com/cipolleschi))
 - **Runtime:** CDP backend now accepts `addBinding` and `removeBinding` methods earlier, before a Runtime exists. ([3271e57c75](https://github.com/facebook/react-native/commit/3271e57c751e7d1193c1e9f7b53e545231511b9d) by [@motiz88](https://github.com/motiz88))
@@ -104,7 +176,6 @@
 
 ### Deprecated
 
-- **APIs:** Deprecate legacy javascript react native apis ([e7aeea26bd](https://github.com/facebook/react-native/commit/e7aeea26bde6e9cda0a3a0a55fc2a0421fb0c0e5) by [@RSNara](https://github.com/RSNara))
 - **StyleSheet:** `StyleSheet.absoluteFillObject` is deprecated in favor of `StyleSheet.absoluteFill` (equivalent). ([83e19813ff](https://github.com/facebook/react-native/commit/83e19813ff5498ab3497d97fe38dba63a5554425) by [@huntie](https://github.com/huntie))
 - Deprecate all the c++ classes not used by interop, or the new architecture. ([9539cd2626](https://github.com/facebook/react-native/commit/9539cd26261aef646379104833c7f719e3d83d02) by [@RSNara](https://github.com/RSNara))
 
@@ -158,7 +229,6 @@
 - **Casting:** Casting rawValue to int was incorrectly truncating ([31b9f10364](https://github.com/facebook/react-native/commit/31b9f103645e67586bdfc5c2f590c28c04ca3871) by [@javache](https://github.com/javache))
 - **Codegen:** Help Codegen find library's package.json if some libraries using `exports` field in their package.json file and the `./package.json` subpath is not explicitly defined ([739dfd2141](https://github.com/facebook/react-native/commit/739dfd2141015a8126448bda64a559f5bf22672e) by [@RakaDoank](https://github.com/RakaDoank))
 - **Hermes:** Change leftover references to `hermes.framework` to `hermesvm.framework` ([7f051c5470](https://github.com/facebook/react-native/commit/7f051c54701b3585f76f63846abbf7e68e2688d2) by [@j-piasecki](https://github.com/j-piasecki))
-- **Hermes V1:** Fixed coordinates for Hermes V1 artifacts ([674fb77d93](https://github.com/facebook/react-native/commit/674fb77d93dfe67a5fe90449dc71b195b1851e13) by [@j-piasecki](https://github.com/j-piasecki))
 - **Performance Panel:** Fix typo in Performance.js type checking condition ([6caf2dfa38](https://github.com/facebook/react-native/commit/6caf2dfa382fd4f1184b8d21b030c36687a256e4) by [@YangJonghun](https://github.com/YangJonghun))
 - **Performance Panel:** Add default cases to switch statements in headers ([323fe3a5d4](https://github.com/facebook/react-native/commit/323fe3a5d471ae5a2f94d5c2bd13cc97feffe0a5) by [@NSProgrammer](https://github.com/NSProgrammer))
 - **ReactCommon:** Bring back ContextContainer::Shared = std::shared_ptr<const ContextContainer> alias ([daeb6e99ab](https://github.com/facebook/react-native/commit/daeb6e99abbca2b6395a9a703d2b0bb9e5091fb7) by [@christophpurrer](https://github.com/christophpurrer))
@@ -170,13 +240,11 @@
 #### Android specific
 
 - **Accessability:** Stabilize custom accessibility action IDs to prevent "incompatible action" errors in TalkBack. ([626568f9a3](https://github.com/facebook/react-native/commit/626568f9a3f956a52f6c55df1dc3bc5cd017e353) by [@leg234-png](https://github.com/leg234-png))
-- **Build From Source:** Fix build from source due to missing folder error on Gradle 9.0 ([9fbce3eff1](https://github.com/facebook/react-native/commit/9fbce3eff18060f16e796badc415ba733ede19af) by [@cortinico](https://github.com/cortinico))
 - **Determinism:** Turned off build IDs for native libraries, fixing issues with reproducibility ([4b8dbe7642](https://github.com/facebook/react-native/commit/4b8dbe7642be53d0ccfc68ca8c9b3f5e750a68c0) by [@Rexogamer](https://github.com/Rexogamer))
 - **DevTools:** Fix stack trace linkifying failing when using Android emulator and other situations where the device and debugger have different bundle urls ([794df48ad6](https://github.com/facebook/react-native/commit/794df48ad6a259022e66de1a38ff54b5ec67c3e4) by [@vzaidman](https://github.com/vzaidman))
 - **Edge to Edge:** Fix `Dimensions` `window` values on Android < 15 when edge-to-edge is enabled ([3b185e4bce](https://github.com/facebook/react-native/commit/3b185e4bcef24e0689cccd4cf250d469b114d4da) by [@zoontek](https://github.com/zoontek))
 - **Fonts:** Update font scale when recreating `RootView` ([5cda3065ce](https://github.com/facebook/react-native/commit/5cda3065ce635460a7458cbab5c10e24bea3bfe2) by [@j-piasecki](https://github.com/j-piasecki))
 - **Fonts:** Fix incorrect positioning of inline view at the end of string when RTL text in LTR container ([7f224941bb](https://github.com/facebook/react-native/commit/7f224941bb807919b487d8e1634dd2124f9258b8) by [@NickGerleman](https://github.com/NickGerleman))
-- **Hermes V1:** Changed the coordinates of hermes artifacts when using Hermes V1 ([d0fb33822d](https://github.com/facebook/react-native/commit/d0fb33822de38183895c8b3421f46966909beaf3) by [@j-piasecki](https://github.com/j-piasecki))
 - **Locale:** Use the first available locale instead of the default one to decide `isDevicePreferredLanguageRTL` ([a03780d279](https://github.com/facebook/react-native/commit/a03780d279d0944e0dcbbf5a93680775006598b0) by Kaining Zhong)
 - **New Architecture:** Correctly account for insets on first render of Modals on New Arch ([2e76fc8e8e](https://github.com/facebook/react-native/commit/2e76fc8e8ea01fbce5bd131f675364e688f49088) by [@cortinico](https://github.com/cortinico))
 - **Performance:** Fix mounting is very slow on Android by shipping native transform optimizations ([c557311ed8](https://github.com/facebook/react-native/commit/c557311ed836cded8548c5bca32f3eded0abc7ff) by [@cortinico](https://github.com/cortinico))
@@ -189,18 +257,13 @@
 - **Build:** Non-UTF8 crashes Info.plist local frameworks ([91e69b5d4c](https://github.com/facebook/react-native/commit/91e69b5d4c768278680a8d9ae979bc267624ce98) by [@philipheinser](https://github.com/philipheinser))
 - **Build:** Fixed variable naming error in `set_fast_float_config` method in `react_native_pods.rb` ([327057fad5](https://github.com/facebook/react-native/commit/327057fad5c78a95e6c039bfe380d78672e83a43) by [@eliotfallon213](https://github.com/eliotfallon213))
 - **Build:** Fix pure cocoapods dynamic framework build ([aa4555eaf1](https://github.com/facebook/react-native/commit/aa4555eaf1b6aab83660c600e867fa6c2da4128e) by [@cipolleschi](https://github.com/cipolleschi))
-- **Codegen:** Fix regression that skips artifacts code generation ([f6f5ea0b2e](https://github.com/facebook/react-native/commit/f6f5ea0b2eed894725d8f6e8bd045c99c3182026) by [@kitten](https://github.com/kitten))
 - **Native Modules:** Fix concurrent calls into resolve/reject inside native modules ([dc879950d1](https://github.com/facebook/react-native/commit/dc879950d196dfd429229f1c4c8e743ef1799d11) by [@RSNara](https://github.com/RSNara))
 - **New Architecture:** Fix overriding (xc)framework Info.plist files with RCTNewArchEnabled field ([f84514a88b](https://github.com/facebook/react-native/commit/f84514a88be00f8dcae7972f84aa89d829392a58) by [@msynowski](https://github.com/msynowski))
-- **Prebuild:** Fix Node scripts related to prebuilt tarball extraction for paths containing whitespaces ([9731e8ebc5](https://github.com/facebook/react-native/commit/9731e8ebc5ea87526a91b9903172639e062cd920) by [@kitten](https://github.com/kitten))
-- **Prebuild:** Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source ([f170db412b](https://github.com/facebook/react-native/commit/f170db412b3ab46fd0894d5d66431d9c230cd3a8) by [@kitten](https://github.com/kitten))
-- **RCTAlertController:** Simplify RCTAlertController, don't create additional UIWindow ([05c4321b19](https://github.com/facebook/react-native/commit/05c4321b194c3d0e146b6085bcaccc75acd3fd67) by [@okwasniewski](https://github.com/okwasniewski))
 - **RCTPullToRefreshViewComponentView:** Properly initialize the `RCTPullToRefreshViewComponentView` ([27217e8bd6](https://github.com/facebook/react-native/commit/27217e8bd601757b5db6efc022db428b552a2aa4) by [@cipolleschi](https://github.com/cipolleschi))
 - **RCTReactNativeFactory:** Ask the delegate for `getModuleForClass` and `getModuleInstanceFromClass` ([85b47afb48](https://github.com/facebook/react-native/commit/85b47afb48e50b036d2c2c79a008f571d3bfcb43) by [@cipolleschi](https://github.com/cipolleschi))
 - **ScrollView:** Correctly propagate `ScrollView` props to `RefreshControl` ([09daad27ea](https://github.com/facebook/react-native/commit/09daad27ea22b83fab65176ea3c7f5f1488ba408) by [@cipolleschi](https://github.com/cipolleschi))
 - **ScrollView:** Make sure that `ScrollView` recycled refresh control have the right props setup. ([21b93d8d7d](https://github.com/facebook/react-native/commit/21b93d8d7d46a26f728df19764f85a8aebf318bb) by [@cipolleschi](https://github.com/cipolleschi))
 - **Switch:** Fixed a crash when rendering the `Switch` component ([28275a0f7b](https://github.com/facebook/react-native/commit/28275a0f7b182a215010d47fb841d9c2c36bb24c) by [@cipolleschi](https://github.com/cipolleschi))
-- **Switch:** Fix Switch layout to work with iOS26 ([91d427fe52](https://github.com/facebook/react-native/commit/91d427fe52a307f9aa8579912ef956d61808dad2) by [@cipolleschi](https://github.com/cipolleschi))
 - **Text:** Fix selectable prop not working correctly ([f004cd39bc](https://github.com/facebook/react-native/commit/f004cd39bc4b632006085cbcf61df52bc5d25242) by [@iamAbhi-916](https://github.com/iamAbhi-916))
 - **TextInput:** Update TextInput recycling logic to clean up the `inputAccessoryView` dependency. ([eb08f54594](https://github.com/facebook/react-native/commit/eb08f545948de9e2eca91ab3cb7569670c553b15) by [@ArturKalach](https://github.com/ArturKalach))
 - **TextInput:** Fixed TextInput behavior when `maxLength={null}` is passed ([56ad53cb14](https://github.com/facebook/react-native/commit/56ad53cb14b5c842714fcf976b6ba81f68c140f2) by [@cipolleschi](https://github.com/cipolleschi))
@@ -210,39 +273,6 @@
 
 - **Network:** Fixed vulnerability on undici and on-headers ([dd00c9055a](https://github.com/facebook/react-native/commit/dd00c9055a8f0c9ceac1716385a8a9874f7a4c2e) by [@cipolleschi](https://github.com/cipolleschi))
 
-## v0.81.4
-
-### Fixed
-
-#### iOS specific
-
-- Fix regression that skips artifacts code generation ([f6f5ea0b2e](https://github.com/facebook/react-native/commit/f6f5ea0b2eed894725d8f6e8bd045c99c3182026) by [@kitten](https://github.com/kitten))
-- Reapplied "Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source" ([bb73315a3f](https://github.com/facebook/react-native/commit/bb73315a3fd8cd203c4ddb3ffa10bfec307c7e92) by [@kitten](https://github.com/kitten))
-
-## v0.81.3
-
-### Fixed
-
-#### iOS specific
-
-- Reverted "Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source" ([537e3ad930](https://github.com/facebook/react-native/commit/537e3ad93041c0cef959f0d20586fe97818900a6) by [@gabrieldonadel](https://github.com/gabrieldonadel))
-
-## v0.81.2
-
-### Added
-
-#### Android specific
-
-- Create a debugOptimized buildType for Android ([5e3edafec6](https://github.com/facebook/react-native/commit/5e3edafec6c69558521061dced7a6bcd046576b0) by [@cortinico](https://github.com/cortinico))
-- Add `useNativeEqualsInNativeReadableArrayAndroid` and `useNativeTransformHelperAndroid` feature flag to the experimental channel. This should alleviate some of the perf issue users are seeing on Android + Reanimated + NewArch on 0.81([a346096da8](https://github.com/facebook/react-native/commit/a346096da81fccf5fbc82d83bfc128695e6ec3a5) by [@cortinico](https://github.com/cortinico))
-
-### Fixed
-
-#### iOS specific
-
-- Fix Node scripts related to prebuilt tarball extraction for paths containing whitespaces ([366f2ad505](https://github.com/facebook/react-native/commit/366f2ad5057ffecc1f5b211f6aae29567ae6b7e5) by [@kitten](https://github.com/kitten))
-- Use autolinking-generated react-native-config output in second step of cocoapods linking that generates artifacts and generated source ([a2eb29e5e7](https://github.com/facebook/react-native/commit/a2eb29e5e7aef8bbdf4c647c8467b5292b013b20) by [@kitten](https://github.com/kitten))
-
 ## v0.81.1
 
 ### Added
@@ -257,6 +287,7 @@
 - **Infra:** Add missing Babel dependencies ([bf2c3af93b](https://github.com/facebook/react-native/commit/bf2c3af93b146943cb35866fa9badcd188e63f5b) by [@tido64](https://github.com/tido64))
 - **Accessibility:** fix `aria-label` on `TextInput` ([6965d57e75](https://github.com/facebook/react-native/commit/6965d57e75ed0cf9f265c6020d478ddb9af4bf10) by [@mdjastrzebski](https://github.com/mdjastrzebski))
 
+
 #### iOS specific
 
 - **TextInput:** Setting maxLength to 0 in TextInput now correctly blocks typing ([c5956da8c0](https://github.com/facebook/react-native/commit/c5956da8c0b735d47761af51019ed25b49001c00) by [@riteshshukla04](https://github.com/riteshshukla04))
@@ -270,6 +301,7 @@
 - **Prebuild:** Fix "file exists" error in `ReactNativeDependencies.podspec` ([4c570b5d31](https://github.com/facebook/react-native/commit/4c570b5d31ef46e04e5fa26fa92d7f7090bf15e2) by [@vonovak](https://github.com/vonovak))
 - **Prebuild:** added explicit handling of ReactCodegen ([6526a98d68](https://github.com/facebook/react-native/commit/6526a98d68dbc8578ea15cbf117c0a216c6e9af0) by [@cipolleschi](https://github.com/cipolleschi))
 
+
 ## v0.81.0
 
 ### Breaking
@@ -824,10 +856,6 @@
 - **Text:** Selection range not respected when changing text or selection when selection is forced ([d32ea66e6a](https://github.com/facebook/react-native/commit/d32ea66e6a945dd84092532401b265b12d482668) by Olivier Bouillet)
 - **TextInput:** Fix TextInput `onContentSizeChange` event being dispatched only once on iOS on the new architecture ([5fd5188172](https://github.com/facebook/react-native/commit/5fd51881727b2d86f87abf04db032940ac0ec8c4) by [@j-piasecki](https://github.com/j-piasecki))
 
-## v0.79.7
-
-See [CHANGELOG-0.7x](./CHANGELOG-0.7x.md#v0797)
-
 ## v0.79.6
 
 See [CHANGELOG-0.7x](./CHANGELOG-0.7x.md#v0796)

build.gradle.kts

@@ -104,6 +104,10 @@ tasks.register("build") {
 tasks.register("publishAllToMavenTempLocal") {
   description = "Publish all the artifacts to be available inside a Maven Local repository on /tmp."
   dependsOn(":packages:react-native:ReactAndroid:publishAllPublicationsToMavenTempLocalRepository")
+  // We don't publish the external-artifacts to Maven Local as ci is using it via workspace.
+  dependsOn(
+      ":packages:react-native:ReactAndroid:hermes-engine:publishAllPublicationsToMavenTempLocalRepository"
+  )
 }
 
 tasks.register("publishAndroidToSonatype") {
@@ -124,14 +128,15 @@ if (project.findProperty("react.internal.useHermesNightly")?.toString()?.toBoole
 
       That's fine for local development, but you should not commit this change.
       ********************************************************************************
-      """
+  """
           .trimIndent()
   )
   allprojects {
     configurations.all {
       resolutionStrategy.dependencySubstitution {
         substitute(project(":packages:react-native:ReactAndroid:hermes-engine"))
-            .using(module("com.facebook.hermes:hermes-android:0.+"))
+            // TODO: T237406039 update coordinates
+            .using(module("com.facebook.react:hermes-android:0.+"))
             .because("Users opted to use hermes from nightly")
       }
     }

gradle.properties

@@ -4,13 +4,6 @@ org.gradle.caching=true
 
 android.useAndroidX=true
 
-# Those 2 properties are needed to make our project compatible with
-# AGP 9.0.0 for the time being. Ideally we should not opt-out of
-# builtInKotlin and newDsl once AGP 9.0.0 hits stable.
-# More on this: https://developer.android.com/build/releases/agp-preview#android-gradle-plugin-built-in-kotlin
-android.builtInKotlin=false
-android.newDsl=false
-
 # Use this property to specify which architecture you want to build.
 # You can also override it from the CLI using
 # ./gradlew <task> -PreactNativeArchitectures=x86_64

package.json

@@ -58,8 +58,8 @@
     "@jest/create-cache-key-function": "^29.7.0",
     "@microsoft/api-extractor": "^7.52.2",
     "@octokit/rest": "^22.0.0",
-    "@react-native/metro-babel-transformer": "0.83.0-main",
-    "@react-native/metro-config": "0.83.0-main",
+    "@react-native/metro-babel-transformer": "0.82.0-main",
+    "@react-native/metro-config": "0.82.0-main",
     "@tsconfig/node22": "22.0.2",
     "@types/react": "^19.1.0",
     "@typescript-eslint/parser": "^8.36.0",
@@ -86,7 +86,7 @@
     "eslint-plugin-relay": "^1.8.3",
     "fb-dotslash": "0.5.8",
     "flow-api-translator": "0.32.0",
-    "flow-bin": "^0.289.0",
+    "flow-bin": "^0.287.0",
     "glob": "^7.1.1",
     "hermes-eslint": "0.32.0",
     "hermes-transform": "0.32.0",
@@ -101,15 +101,15 @@
     "markdownlint-cli2": "^0.17.2",
     "markdownlint-rule-relative-links": "^3.0.0",
     "memfs": "^4.38.2",
-    "metro-babel-register": "^0.83.3",
-    "metro-transform-plugins": "^0.83.3",
+    "metro-babel-register": "^0.83.1",
+    "metro-transform-plugins": "^0.83.1",
     "micromatch": "^4.0.4",
     "node-fetch": "^2.2.0",
     "nullthrows": "^1.1.1",
     "prettier": "3.6.2",
     "prettier-plugin-hermes-parser": "0.32.0",
-    "react": "19.2.0",
-    "react-test-renderer": "19.2.0",
+    "react": "19.1.1",
+    "react-test-renderer": "19.1.1",
     "rimraf": "^3.0.2",
     "shelljs": "^0.8.5",
     "signedsource": "^2.0.0",
@@ -120,7 +120,8 @@
     "ws": "^7.5.10"
   },
   "resolutions": {
-    "react-is": "19.2.0",
+    "eslint-plugin-react-hooks": "6.1.0-canary-12bc60f5-20250613",
+    "react-is": "19.1.1",
     "on-headers": "1.1.0",
     "compression": "1.8.1"
   }

packages/assets/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/assets-registry",
-  "version": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main"
+    "@react-native/codegen": "0.82.0-main"
   },
   "devDependencies": {
     "@babel/core": "^7.25.2"

packages/community-cli-plugin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/community-cli-plugin",
-  "version": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "Core CLI commands for React Native",
   "keywords": [
     "react-native",
@@ -22,16 +22,16 @@
     "dist"
   ],
   "dependencies": {
-    "@react-native/dev-middleware": "0.83.0-main",
+    "@react-native/dev-middleware": "0.82.0-main",
     "debug": "^4.4.0",
     "invariant": "^2.2.4",
-    "metro": "^0.83.3",
-    "metro-config": "^0.83.3",
-    "metro-core": "^0.83.3",
+    "metro": "^0.83.1",
+    "metro-config": "^0.83.1",
+    "metro-core": "^0.83.1",
     "semver": "^7.1.3"
   },
   "devDependencies": {
-    "metro-resolver": "^0.83.3"
+    "metro-resolver": "^0.83.1"
   },
   "peerDependencies": {
     "@react-native-community/cli": "*",

packages/core-cli-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/core-cli-utils",
-  "version": "0.83.0-main",
+  "version": "0.82.0-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<<4bb67766e15e25a481c4c38873260a7a>>
-Git revision: 7aa57d13e50ce9d74a91c9315c9b0ded00fbc19f
+@generated SignedSource<<e0cc45c5c3854d0d3013f1c735e804b8>>
+Git revision: 8cce39003f66f66a8fb4c0e581a2b5046cf9c1d1
 Built with --nohooks: false
 Is local checkout: false
 Remote URL: https://github.com/facebook/react-native-devtools-frontend

packages/debugger-frontend/dist/third-party/front_end/core/rn_experiments/rn_experiments.js

@@ -1 +1 @@
-import*as e from"../root/root.js";const t=e.Runtime.RNExperimentName,i={didInitializeExperiments:!1,isReactNativeEntryPoint:!1};class n{name;title;unstable;docLink;feedbackLink;enabledByDefault;constructor(e){this.name=e.name,this.title=e.title,this.unstable=e.unstable,this.docLink=e.docLink,this.feedbackLink=e.feedbackLink,this.enabledByDefault=function(e,t){if(null==e)return()=>t;if("boolean"==typeof e)return()=>e;return e}(e.enabledByDefault,!1)}}const r=new class{#e=new Map;#t=new Set;register(e){if(i.didInitializeExperiments)throw new Error("Experiments must be registered before constructing MainImpl");const{name:t}=e;if(this.#e.has(t))throw new Error(`React Native Experiment ${t} is already registered`);this.#e.set(t,new n(e))}enableExperimentsByDefault(e){if(i.didInitializeExperiments)throw new Error("Experiments must be configured before constructing MainImpl");for(const i of e)if(Object.prototype.hasOwnProperty.call(t,i)){const e=this.#e.get(i);if(!e)throw new Error(`React Native Experiment ${i} is not registered`);e.enabledByDefault=()=>!0}else this.#t.add(i)}copyInto(e,t=""){for(const[n,r]of this.#e)e.register(n,t+r.title,r.unstable,r.docLink,r.feedbackLink),r.enabledByDefault({isReactNativeEntryPoint:i.isReactNativeEntryPoint})&&e.enableExperimentsByDefault([n]);for(const t of this.#t)e.enableExperimentsByDefault([t]);i.didInitializeExperiments=!0}};r.register({name:t.JS_HEAP_PROFILER_ENABLE,title:"Enable Heap Profiler (Memory Panel)",unstable:!1,enabledByDefault:({isReactNativeEntryPoint:e})=>!e}),r.register({name:t.REACT_NATIVE_SPECIFIC_UI,title:"Show React Native-specific UI",unstable:!1,enabledByDefault:({isReactNativeEntryPoint:e})=>e}),r.register({name:t.ENABLE_NETWORK_PANEL,title:"Enable Network panel",unstable:!0,enabledByDefault:()=>!1});var a=Object.freeze({__proto__:null,Instance:r,RNExperimentName:t,setIsReactNativeEntryPoint:function(e){if(i.didInitializeExperiments)throw new Error("setIsReactNativeEntryPoint must be called before constructing MainImpl");i.isReactNativeEntryPoint=e}});export{a as RNExperimentsImpl};
+import*as e from"../root/root.js";const t=e.Runtime.RNExperimentName,n={didInitializeExperiments:!1,isReactNativeEntryPoint:!1};class i{name;title;unstable;docLink;feedbackLink;enabledByDefault;constructor(e){this.name=e.name,this.title=e.title,this.unstable=e.unstable,this.docLink=e.docLink,this.feedbackLink=e.feedbackLink,this.enabledByDefault=function(e,t){if(null==e)return()=>t;if("boolean"==typeof e)return()=>e;return e}(e.enabledByDefault,!1)}}const r=new class{#e=new Map;#t=new Set;register(e){if(n.didInitializeExperiments)throw new Error("Experiments must be registered before constructing MainImpl");const{name:t}=e;if(this.#e.has(t))throw new Error(`React Native Experiment ${t} is already registered`);this.#e.set(t,new i(e))}enableExperimentsByDefault(e){if(n.didInitializeExperiments)throw new Error("Experiments must be configured before constructing MainImpl");for(const n of e)if(Object.prototype.hasOwnProperty.call(t,n)){const e=this.#e.get(n);if(!e)throw new Error(`React Native Experiment ${n} is not registered`);e.enabledByDefault=()=>!0}else this.#t.add(n)}copyInto(e,t=""){for(const[i,r]of this.#e)e.register(i,t+r.title,r.unstable,r.docLink,r.feedbackLink),r.enabledByDefault({isReactNativeEntryPoint:n.isReactNativeEntryPoint})&&e.enableExperimentsByDefault([i]);for(const t of this.#t)e.enableExperimentsByDefault([t]);n.didInitializeExperiments=!0}};r.register({name:t.JS_HEAP_PROFILER_ENABLE,title:"Enable Heap Profiler (Memory Panel)",unstable:!1,enabledByDefault:({isReactNativeEntryPoint:e})=>!e}),r.register({name:t.REACT_NATIVE_SPECIFIC_UI,title:"Show React Native-specific UI",unstable:!1,enabledByDefault:({isReactNativeEntryPoint:e})=>e}),r.register({name:t.ENABLE_PERFORMANCE_PANEL,title:"Enable Performance panel",unstable:!0,enabledByDefault:({isReactNativeEntryPoint:e})=>!e}),r.register({name:t.ENABLE_NETWORK_PANEL,title:"Enable Network panel",unstable:!0,enabledByDefault:()=>!1});var a=Object.freeze({__proto__:null,Instance:r,RNExperimentName:t,setIsReactNativeEntryPoint:function(e){if(n.didInitializeExperiments)throw new Error("setIsReactNativeEntryPoint must be called before constructing MainImpl");n.isReactNativeEntryPoint=e}});export{a as RNExperimentsImpl};

packages/debugger-frontend/dist/third-party/front_end/core/root/root.js

@@ -1 +1 @@
-import*as e from"../platform/platform.js";const t=new URLSearchParams(location.search);let n,r,s="";function a(){return window.location.pathname}function i(e){return["node_app","js_app"].some((t=>e.includes(t)))}class o{constructor(){}static instance(e={forceNew:null}){const{forceNew:t}=e;return n&&!t||(n=new o),n}static removeInstance(){n=void 0}static queryParam(e){return t.get(e)}static setQueryParamForTesting(e,n){t.set(e,n)}static isNode(){return void 0===r&&(r=i(a())),r}static setPlatform(e){s=e}static platform(){return s}static isDescriptorEnabled(e){const{experiment:t}=e;if("*"===t)return!0;if(t&&t.startsWith("!")&&h.isEnabled(t.substring(1)))return!1;if(t&&!t.startsWith("!")&&!h.isEnabled(t))return!1;const{condition:n}=e;return!n||n(_)}loadLegacyModule(e){console.log("Loading legacy module: "+e);return import(`../../${e}`).then((t=>(console.log("Loaded legacy module: "+e),t)))}}class l{#e=[];#t=new Set;#n=new Set;#r=new Set;#s=new Set;#a=new c;allConfigurableExperiments(){const e=[];for(const t of this.#e)this.#n.has(t.name)||e.push(t);return e}register(t,n,r,s,a){if(this.#t.has(t))throw new Error(`Duplicate registration of experiment '${t}'`);this.#t.add(t),this.#e.push(new m(this,t,n,Boolean(r),s??e.DevToolsPath.EmptyUrlString,a??e.DevToolsPath.EmptyUrlString))}isEnabled(e){return this.checkExperiment(e),!1!==this.#a.get(e)&&(!(!this.#n.has(e)&&!this.#r.has(e))||(!!this.#s.has(e)||Boolean(this.#a.get(e))))}setEnabled(e,t){this.checkExperiment(e),this.#a.set(e,t)}enableExperimentsTransiently(e){for(const t of e)this.checkExperiment(t),this.#n.add(t)}enableExperimentsByDefault(e){for(const t of e)this.checkExperiment(t),this.#r.add(t)}setServerEnabledExperiments(e){for(const t of e)this.checkExperiment(t),this.#s.add(t)}enableForTest(e){this.checkExperiment(e),this.#n.add(e)}disableForTest(e){this.checkExperiment(e),this.#n.delete(e)}clearForTest(){this.#e=[],this.#t.clear(),this.#n.clear(),this.#r.clear(),this.#s.clear()}cleanUpStaleExperiments(){this.#a.cleanUpStaleExperiments(this.#t)}checkExperiment(e){if(!this.#t.has(e))throw new Error(`Unknown experiment '${e}'`)}}class c{#e={};constructor(){try{const e=self.localStorage?.getItem("experiments");e&&(this.#e=JSON.parse(e))}catch{console.error("Failed to parse localStorage['experiments']")}}get(e){return this.#e[e]}set(e,t){this.#e[e]=t,this.#i()}cleanUpStaleExperiments(e){for(const[t]of Object.entries(this.#e))e.has(t)||delete this.#e[t];this.#i()}#i(){self.localStorage?.setItem("experiments",JSON.stringify(this.#e))}}class m{name;title;unstable;docLink;feedbackLink;#e;constructor(e,t,n,r,s,a){this.name=t,this.title=n,this.unstable=r,this.docLink=s,this.feedbackLink=a,this.#e=e}isEnabled(){return this.#e.isEnabled(this.name)}setEnabled(e){this.#e.setEnabled(this.name,e)}}const h=new l;var E,p,d,u;!function(e){e.REACT_NATIVE_SPECIFIC_UI="react-native-specific-ui",e.JS_HEAP_PROFILER_ENABLE="js-heap-profiler-enable",e.ENABLE_NETWORK_PANEL="enable-network-panel"}(E||(E={})),function(e){e.NOT_SOURCES_HIDE_ADD_FOLDER="!sources.hide_add_folder",e.REACT_NATIVE_UNSTABLE_NETWORK_PANEL="unstable_enableNetworkPanel"}(p||(p={})),function(e){e[e.ALLOW=0]="ALLOW",e[e.ALLOW_WITHOUT_LOGGING=1]="ALLOW_WITHOUT_LOGGING",e[e.DISABLE=2]="DISABLE"}(d||(d={})),function(e){e.ALL_SCRIPTS="ALL_SCRIPTS",e.SIDE_EFFECT_FREE_SCRIPTS_ONLY="SIDE_EFFECT_FREE_SCRIPTS_ONLY",e.NO_SCRIPTS="NO_SCRIPTS"}(u||(u={}));const _=Object.create(null),f={canDock:()=>Boolean(o.queryParam("can_dock")),notSourcesHideAddFolder:()=>Boolean(o.queryParam(p.NOT_SOURCES_HIDE_ADD_FOLDER)),reactNativeUnstableNetworkPanel:()=>Boolean(o.queryParam(p.REACT_NATIVE_UNSTABLE_NETWORK_PANEL))||h.isEnabled("enable-network-panel")};var x=Object.freeze({__proto__:null,get ConditionName(){return p},Experiment:m,ExperimentsSupport:l,get GenAiEnterprisePolicyValue(){return d},get HostConfigFreestylerExecutionMode(){return u},get RNExperimentName(){return E},Runtime:o,conditions:f,experiments:h,getChromeVersion:()=>{const e=navigator.userAgent.match(/(?:^|\W)(?:Chrome|HeadlessChrome)\/(\S+)/);return e&&e.length>1?e[1]:""},getPathName:a,getRemoteBase:function(e=self.location.toString()){const t=new URL(e).searchParams.get("remoteBase");if(!t)return null;const n=/\/serve_file\/(@[0-9a-zA-Z]+)\/?$/.exec(t);return n?{base:`devtools://devtools/remote/serve_file/${n[1]}/`,version:n[1]}:null},hostConfig:_,isNodeEntry:i});export{x as Runtime};
+import*as e from"../platform/platform.js";const t=new URLSearchParams(location.search);let n,r,s="";function a(){return window.location.pathname}function i(e){return["node_app","js_app"].some((t=>e.includes(t)))}class o{constructor(){}static instance(e={forceNew:null}){const{forceNew:t}=e;return n&&!t||(n=new o),n}static removeInstance(){n=void 0}static queryParam(e){return t.get(e)}static setQueryParamForTesting(e,n){t.set(e,n)}static isNode(){return void 0===r&&(r=i(a())),r}static setPlatform(e){s=e}static platform(){return s}static isDescriptorEnabled(e){const{experiment:t}=e;if("*"===t)return!0;if(t&&t.startsWith("!")&&h.isEnabled(t.substring(1)))return!1;if(t&&!t.startsWith("!")&&!h.isEnabled(t))return!1;const{condition:n}=e;return!n||n(_)}loadLegacyModule(e){console.log("Loading legacy module: "+e);return import(`../../${e}`).then((t=>(console.log("Loaded legacy module: "+e),t)))}}class l{#e=[];#t=new Set;#n=new Set;#r=new Set;#s=new Set;#a=new c;allConfigurableExperiments(){const e=[];for(const t of this.#e)this.#n.has(t.name)||e.push(t);return e}register(t,n,r,s,a){if(this.#t.has(t))throw new Error(`Duplicate registration of experiment '${t}'`);this.#t.add(t),this.#e.push(new m(this,t,n,Boolean(r),s??e.DevToolsPath.EmptyUrlString,a??e.DevToolsPath.EmptyUrlString))}isEnabled(e){return this.checkExperiment(e),!1!==this.#a.get(e)&&(!(!this.#n.has(e)&&!this.#r.has(e))||(!!this.#s.has(e)||Boolean(this.#a.get(e))))}setEnabled(e,t){this.checkExperiment(e),this.#a.set(e,t)}enableExperimentsTransiently(e){for(const t of e)this.checkExperiment(t),this.#n.add(t)}enableExperimentsByDefault(e){for(const t of e)this.checkExperiment(t),this.#r.add(t)}setServerEnabledExperiments(e){for(const t of e)this.checkExperiment(t),this.#s.add(t)}enableForTest(e){this.checkExperiment(e),this.#n.add(e)}disableForTest(e){this.checkExperiment(e),this.#n.delete(e)}clearForTest(){this.#e=[],this.#t.clear(),this.#n.clear(),this.#r.clear(),this.#s.clear()}cleanUpStaleExperiments(){this.#a.cleanUpStaleExperiments(this.#t)}checkExperiment(e){if(!this.#t.has(e))throw new Error(`Unknown experiment '${e}'`)}}class c{#e={};constructor(){try{const e=self.localStorage?.getItem("experiments");e&&(this.#e=JSON.parse(e))}catch{console.error("Failed to parse localStorage['experiments']")}}get(e){return this.#e[e]}set(e,t){this.#e[e]=t,this.#i()}cleanUpStaleExperiments(e){for(const[t]of Object.entries(this.#e))e.has(t)||delete this.#e[t];this.#i()}#i(){self.localStorage?.setItem("experiments",JSON.stringify(this.#e))}}class m{name;title;unstable;docLink;feedbackLink;#e;constructor(e,t,n,r,s,a){this.name=t,this.title=n,this.unstable=r,this.docLink=s,this.feedbackLink=a,this.#e=e}isEnabled(){return this.#e.isEnabled(this.name)}setEnabled(e){this.#e.setEnabled(this.name,e)}}const h=new l;var E,p,d,u;!function(e){e.REACT_NATIVE_SPECIFIC_UI="react-native-specific-ui",e.JS_HEAP_PROFILER_ENABLE="js-heap-profiler-enable",e.ENABLE_PERFORMANCE_PANEL="enable-performance-panel",e.ENABLE_NETWORK_PANEL="enable-network-panel"}(E||(E={})),function(e){e.NOT_SOURCES_HIDE_ADD_FOLDER="!sources.hide_add_folder",e.REACT_NATIVE_UNSTABLE_NETWORK_PANEL="unstable_enableNetworkPanel"}(p||(p={})),function(e){e[e.ALLOW=0]="ALLOW",e[e.ALLOW_WITHOUT_LOGGING=1]="ALLOW_WITHOUT_LOGGING",e[e.DISABLE=2]="DISABLE"}(d||(d={})),function(e){e.ALL_SCRIPTS="ALL_SCRIPTS",e.SIDE_EFFECT_FREE_SCRIPTS_ONLY="SIDE_EFFECT_FREE_SCRIPTS_ONLY",e.NO_SCRIPTS="NO_SCRIPTS"}(u||(u={}));const _=Object.create(null),f={canDock:()=>Boolean(o.queryParam("can_dock")),notSourcesHideAddFolder:()=>Boolean(o.queryParam(p.NOT_SOURCES_HIDE_ADD_FOLDER)),reactNativeUnstableNetworkPanel:()=>Boolean(o.queryParam(p.REACT_NATIVE_UNSTABLE_NETWORK_PANEL))||h.isEnabled("enable-network-panel")};var x=Object.freeze({__proto__:null,get ConditionName(){return p},Experiment:m,ExperimentsSupport:l,get GenAiEnterprisePolicyValue(){return d},get HostConfigFreestylerExecutionMode(){return u},get RNExperimentName(){return E},Runtime:o,conditions:f,experiments:h,getChromeVersion:()=>{const e=navigator.userAgent.match(/(?:^|\W)(?:Chrome|HeadlessChrome)\/(\S+)/);return e&&e.length>1?e[1]:""},getPathName:a,getRemoteBase:function(e=self.location.toString()){const t=new URL(e).searchParams.get("remoteBase");if(!t)return null;const n=/\/serve_file\/(@[0-9a-zA-Z]+)\/?$/.exec(t);return n?{base:`devtools://devtools/remote/serve_file/${n[1]}/`,version:n[1]}:null},hostConfig:_,isNodeEntry:i});export{x as Runtime};

packages/debugger-frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/debugger-frontend",
-  "version": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "Debugger frontend for React Native based on Chrome DevTools",
   "keywords": [
     "react-native",

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

@@ -1,71 +1,71 @@
 #!/usr/bin/env dotslash
 
-// @generated SignedSource<<8b06371489dc8b79c23cbf095568c91a>>
+// @generated SignedSource<<f03dde90e30b4654dc18ba4c688f588e>>
 
 
 {
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             "hash": "sha256",
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packages/debugger-shell/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@react-native/debugger-shell",
   "productName": "React Native DevTools",
-  "version": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "Dev server middleware for React Native",
   "keywords": [
     "react-native",
@@ -23,8 +23,8 @@
   ],
   "dependencies": {
     "@isaacs/ttlcache": "^1.4.1",
-    "@react-native/debugger-frontend": "0.83.0-main",
-    "@react-native/debugger-shell": "0.83.0-main",
+    "@react-native/debugger-frontend": "0.82.0-main",
+    "@react-native/debugger-shell": "0.82.0-main",
     "chrome-launcher": "^0.15.2",
     "chromium-edge-launcher": "^0.2.0",
     "connect": "^3.6.5",
@@ -39,7 +39,7 @@
     "node": ">= 20.19.4"
   },
   "devDependencies": {
-    "@react-native/debugger-shell": "0.83.0-main",
+    "@react-native/debugger-shell": "0.82.0-main",
     "selfsigned": "^2.4.1",
     "undici": "^5.29.0",
     "wait-for-expect": "^3.0.2"

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

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/eslint-config",
-  "version": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main",
+    "@react-native/eslint-plugin": "0.82.0-main",
     "@typescript-eslint/eslint-plugin": "^8.36.0",
     "@typescript-eslint/parser": "^8.36.0",
     "eslint-config-prettier": "^8.5.0",
@@ -30,7 +30,7 @@
     "eslint-plugin-ft-flow": "^2.0.1",
     "eslint-plugin-jest": "^29.0.1",
     "eslint-plugin-react": "^7.30.1",
-    "eslint-plugin-react-hooks": "^7.0.1",
+    "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-native": "^4.0.0"
   },
   "peerDependencies": {

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

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/eslint-plugin",
-  "version": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main",
+    "@react-native/codegen": "0.82.0-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": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "Gradle Plugin for React Native",
   "license": "MIT",
   "repository": {

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

@@ -14,6 +14,7 @@ import com.facebook.react.utils.KotlinStdlibCompatUtils.capitalizeCompat
 import com.facebook.react.utils.NdkConfiguratorUtils.configureJsEnginePackagingOptions
 import com.facebook.react.utils.NdkConfiguratorUtils.configureNewArchPackagingOptions
 import com.facebook.react.utils.ProjectUtils.isHermesEnabled
+import com.facebook.react.utils.ProjectUtils.isHermesV1Enabled
 import com.facebook.react.utils.ProjectUtils.useThirdPartyJSC
 import com.facebook.react.utils.detectedCliFile
 import com.facebook.react.utils.detectedEntryFile
@@ -48,6 +49,7 @@ internal fun Project.configureReactTasks(variant: Variant, config: ReactExtensio
       } else {
         isHermesEnabledInProject
       }
+  val isHermesV1Enabled = project.isHermesV1Enabled || rootProject.isHermesV1Enabled
   val isDebuggableVariant =
       config.debuggableVariants.get().any { it.equals(variant.name, ignoreCase = true) }
   val useThirdPartyJSC = project.useThirdPartyJSC
@@ -78,6 +80,7 @@ internal fun Project.configureReactTasks(variant: Variant, config: ReactExtensio
           task.jsBundleDir.set(jsBundleDir)
           task.resourcesDir.set(resourcesDir)
           task.hermesEnabled.set(isHermesEnabledInThisVariant)
+          task.hermesV1Enabled.set(isHermesV1Enabled)
           task.minifyEnabled.set(!isHermesEnabledInThisVariant)
           task.devEnabled.set(false)
           task.jsIntermediateSourceMapsDir.set(jsIntermediateSourceMapsDir)

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

@@ -63,6 +63,8 @@ abstract class BundleHermesCTask : DefaultTask() {
 
   @get:Input abstract val hermesEnabled: Property<Boolean>
 
+  @get:Input abstract val hermesV1Enabled: Property<Boolean>
+
   @get:Input abstract val devEnabled: Property<Boolean>
 
   @get:Input abstract val extraPackagerArgs: ListProperty<String>
@@ -94,7 +96,8 @@ abstract class BundleHermesCTask : DefaultTask() {
     runCommand(bundleCommand)
 
     if (hermesEnabled.get()) {
-      val detectedHermesCommand = detectOSAwareHermesCommand(root.get().asFile, hermesCommand.get())
+      val detectedHermesCommand =
+          detectOSAwareHermesCommand(root.get().asFile, hermesCommand.get(), hermesV1Enabled.get())
       val bytecodeFile = File("${bundleFile}.hbc")
       val outputSourceMap = resolveOutputSourceMap(bundleAssetFilename)
       val compilerSourceMap = resolveCompilerSourceMap(bundleAssetFilename)

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

@@ -44,8 +44,12 @@ internal object AgpConfiguratorUtils {
                   maybeCreate("debugOptimized").apply {
                     manifestPlaceholders["usesCleartextTraffic"] = "true"
                     initWith(debug)
-                    matchingFallbacks += listOf("release")
-                    externalNativeBuild { cmake { arguments("-DCMAKE_BUILD_TYPE=Release") } }
+                    externalNativeBuild {
+                      cmake {
+                        arguments("-DCMAKE_BUILD_TYPE=Release")
+                        matchingFallbacks += listOf("release")
+                      }
+                    }
                   }
                 }
               }
@@ -96,7 +100,6 @@ internal object AgpConfiguratorUtils {
           project.extensions
               .getByType(ApplicationAndroidComponentsExtension::class.java)
               .finalizeDsl { ext ->
-                ext.buildFeatures.resValues = true
                 ext.defaultConfig.resValue(
                     "string",
                     "react_native_dev_server_ip",

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

@@ -14,7 +14,6 @@ import com.facebook.react.utils.PropertyUtils.INCLUDE_JITPACK_REPOSITORY
 import com.facebook.react.utils.PropertyUtils.INCLUDE_JITPACK_REPOSITORY_DEFAULT
 import com.facebook.react.utils.PropertyUtils.INTERNAL_HERMES_PUBLISHING_GROUP
 import com.facebook.react.utils.PropertyUtils.INTERNAL_HERMES_V1_VERSION_NAME
-import com.facebook.react.utils.PropertyUtils.INTERNAL_HERMES_VERSION_NAME
 import com.facebook.react.utils.PropertyUtils.INTERNAL_REACT_NATIVE_MAVEN_LOCAL_REPO
 import com.facebook.react.utils.PropertyUtils.INTERNAL_REACT_PUBLISHING_GROUP
 import com.facebook.react.utils.PropertyUtils.INTERNAL_USE_HERMES_NIGHTLY
@@ -140,7 +139,11 @@ internal object DependencyUtils {
           // Contributors only: The hermes-engine version is forced only if the user has
           // not opted into using nightlies for local development.
           configuration.resolutionStrategy.force(
-              "${coordinates.hermesGroupString}:hermes-android:${if (hermesV1Enabled) coordinates.hermesV1VersionString else coordinates.hermesVersionString}"
+              // TODO: T237406039 update coordinates
+              if (hermesV1Enabled)
+                  "${coordinates.hermesGroupString}:hermes-android:${coordinates.hermesV1VersionString}"
+              else
+                  "${coordinates.reactGroupString}:hermes-android:${coordinates.hermesVersionString}"
           )
         }
       }
@@ -151,10 +154,13 @@ internal object DependencyUtils {
       coordinates: Coordinates,
       hermesV1Enabled: Boolean = false,
   ): List<Triple<String, String, String>> {
+    // TODO: T231755027 update coordinates and versioning
     val dependencySubstitution = mutableListOf<Triple<String, String, String>>()
-    val hermesVersion =
-        if (hermesV1Enabled) coordinates.hermesV1VersionString else coordinates.hermesVersionString
-    val hermesVersionString = "${coordinates.hermesGroupString}:hermes-android:${hermesVersion}"
+    // TODO: T237406039 update coordinates
+    val hermesVersionString =
+        if (hermesV1Enabled)
+            "${coordinates.hermesGroupString}:hermes-android:${coordinates.hermesV1VersionString}"
+        else "${coordinates.reactGroupString}:hermes-android:${coordinates.hermesVersionString}"
     dependencySubstitution.add(
         Triple(
             "com.facebook.react:react-native",
@@ -169,13 +175,6 @@ internal object DependencyUtils {
             "The hermes-engine artifact was deprecated in favor of hermes-android due to https://github.com/facebook/react-native/issues/35210.",
         )
     )
-    dependencySubstitution.add(
-        Triple(
-            "com.facebook.react:hermes-android",
-            hermesVersionString,
-            "The hermes-android artifact was moved to com.facebook.hermes publishing group.",
-        )
-    )
     if (coordinates.reactGroupString != DEFAULT_INTERNAL_REACT_PUBLISHING_GROUP) {
       dependencySubstitution.add(
           Triple(
@@ -184,6 +183,7 @@ internal object DependencyUtils {
               "The react-android dependency was modified to use the correct Maven group.",
           )
       )
+      // TODO: T237406039 update coordinates
       dependencySubstitution.add(
           Triple(
               "com.facebook.react:hermes-android",
@@ -191,13 +191,12 @@ internal object DependencyUtils {
               "The hermes-android dependency was modified to use the correct Maven group.",
           )
       )
-    }
-    if (coordinates.hermesGroupString != DEFAULT_INTERNAL_HERMES_PUBLISHING_GROUP) {
+    } else if (hermesV1Enabled) {
       dependencySubstitution.add(
           Triple(
-              "com.facebook.hermes:hermes-android",
+              "com.facebook.react:hermes-android",
               hermesVersionString,
-              "The hermes-android dependency was modified to use the correct Maven group.",
+              "The hermes-android dependency was modified to use Hermes V1.",
           )
       )
     }
@@ -222,19 +221,11 @@ internal object DependencyUtils {
     val hermesGroupString =
         reactAndroidProperties[INTERNAL_HERMES_PUBLISHING_GROUP] as? String
             ?: DEFAULT_INTERNAL_HERMES_PUBLISHING_GROUP
-
+    // TODO: T237406039 read both versions from the same file
     val hermesVersionProperties = Properties()
     hermesVersionFile.inputStream().use { hermesVersionProperties.load(it) }
 
-    val hermesVersionString =
-        (hermesVersionProperties[INTERNAL_HERMES_VERSION_NAME] as? String).orEmpty()
-    val hermesVersion =
-        if (hermesVersionString.startsWith("0.0.0") || "-commitly-" in hermesVersionString) {
-          "$hermesVersionString-SNAPSHOT"
-        } else {
-          hermesVersionString
-        }
-
+    val hermesVersion = versionString
     val hermesV1Version =
         (hermesVersionProperties[INTERNAL_HERMES_V1_VERSION_NAME] as? String).orEmpty()
 

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

@@ -130,6 +130,7 @@ private fun detectCliFile(reactNativeRoot: File, preconfiguredCliFile: File?): F
 internal fun detectOSAwareHermesCommand(
     projectRoot: File,
     hermesCommand: String,
+    hermesV1Enabled: Boolean = false,
 ): String { // 1. If the project specifies a Hermes command, don't second guess it.
   if (hermesCommand.isNotBlank()) {
     val osSpecificHermesCommand =
@@ -150,9 +151,13 @@ internal fun detectOSAwareHermesCommand(
     return builtHermesc.cliPath(projectRoot)
   }
 
-  // 3. Use hermes-compiler from npm
+  // 3. If Hermes V1 is enabled, use hermes-compiler from npm, otherwise, if the
+  // react-native contains a pre-built hermesc, use it.
+  // TODO: T237406039 use hermes-compiler from npm for both
+  val hermesCPath = if (hermesV1Enabled) HERMES_COMPILER_NPM_DIR else HERMESC_IN_REACT_NATIVE_DIR
   val prebuiltHermesPath =
-      HERMES_COMPILER_NPM_DIR.plus(getHermesCBin())
+      hermesCPath
+          .plus(getHermesCBin())
           .replace("%OS-BIN%", getHermesOSBin())
           // Execution on Windows fails with / as separator
           .replace('/', File.separatorChar)
@@ -238,5 +243,6 @@ internal fun readPackageJsonFile(
 }
 
 private const val HERMES_COMPILER_NPM_DIR = "node_modules/hermes-compiler/hermesc/%OS-BIN%/"
+private const val HERMESC_IN_REACT_NATIVE_DIR = "node_modules/react-native/sdks/hermesc/%OS-BIN%/"
 private const val HERMESC_BUILT_FROM_SOURCE_DIR =
     "node_modules/react-native/ReactAndroid/hermes-engine/build/hermes/bin/"

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

@@ -81,9 +81,8 @@ object PropertyUtils {
   const val INTERNAL_VERSION_NAME = "VERSION_NAME"
 
   /**
-   * Internal properties, shared with iOS, used to control the version name of Hermes Engine. They
-   * are stored in sdks/hermes-engine/version.properties
+   * Internal property, shared with iOS, used to control the version name of Hermes Engine. This is
+   * stored in sdks/hermes-engine/version.properties
    */
-  const val INTERNAL_HERMES_VERSION_NAME = "HERMES_VERSION_NAME"
   const val INTERNAL_HERMES_V1_VERSION_NAME = "HERMES_V1_VERSION_NAME"
 }

packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt

@@ -289,7 +289,7 @@ class DependencyUtilsTest {
     val forcedModules = project.configurations.first().resolutionStrategy.forcedModules
     assertThat(forcedModules.any { it.toString() == "com.facebook.react:react-android:1.2.3" })
         .isTrue()
-    assertThat(forcedModules.any { it.toString() == "com.facebook.hermes:hermes-android:4.5.6" })
+    assertThat(forcedModules.any { it.toString() == "com.facebook.react:hermes-android:4.5.6" })
         .isTrue()
   }
 
@@ -324,11 +324,11 @@ class DependencyUtilsTest {
     val libForcedModules = libProject.configurations.first().resolutionStrategy.forcedModules
     assertThat(appForcedModules.any { it.toString() == "com.facebook.react:react-android:1.2.3" })
         .isTrue()
-    assertThat(appForcedModules.any { it.toString() == "com.facebook.hermes:hermes-android:4.5.6" })
+    assertThat(appForcedModules.any { it.toString() == "com.facebook.react:hermes-android:4.5.6" })
         .isTrue()
     assertThat(libForcedModules.any { it.toString() == "com.facebook.react:react-android:1.2.3" })
         .isTrue()
-    assertThat(libForcedModules.any { it.toString() == "com.facebook.hermes:hermes-android:4.5.6" })
+    assertThat(libForcedModules.any { it.toString() == "com.facebook.react:hermes-android:4.5.6" })
         .isTrue()
   }
 
@@ -381,15 +381,11 @@ class DependencyUtilsTest {
     val libForcedModules = libProject.configurations.first().resolutionStrategy.forcedModules
     assertThat(appForcedModules.any { it.toString() == "io.github.test:react-android:1.2.3" })
         .isTrue()
-    assertThat(
-            appForcedModules.any { it.toString() == "io.github.test.hermes:hermes-android:4.5.6" }
-        )
+    assertThat(appForcedModules.any { it.toString() == "io.github.test:hermes-android:4.5.6" })
         .isTrue()
     assertThat(libForcedModules.any { it.toString() == "io.github.test:react-android:1.2.3" })
         .isTrue()
-    assertThat(
-            libForcedModules.any { it.toString() == "io.github.test.hermes:hermes-android:4.5.6" }
-        )
+    assertThat(libForcedModules.any { it.toString() == "io.github.test:hermes-android:4.5.6" })
         .isTrue()
   }
 
@@ -442,7 +438,7 @@ class DependencyUtilsTest {
         )
         .isEqualTo(dependencySubstitutions[0].third)
     assertThat("com.facebook.react:hermes-engine").isEqualTo(dependencySubstitutions[1].first)
-    assertThat("com.facebook.hermes:hermes-android:0.42.0")
+    assertThat("com.facebook.react:hermes-android:0.42.0")
         .isEqualTo(dependencySubstitutions[1].second)
     assertThat(
             "The hermes-engine artifact was deprecated in favor of hermes-android due to https://github.com/facebook/react-native/issues/35210."
@@ -494,26 +490,19 @@ class DependencyUtilsTest {
         )
         .isEqualTo(dependencySubstitutions[0].third)
     assertThat("com.facebook.react:hermes-engine").isEqualTo(dependencySubstitutions[1].first)
-    assertThat("io.github.test.hermes:hermes-android:0.42.0")
-        .isEqualTo(dependencySubstitutions[1].second)
+    assertThat("io.github.test:hermes-android:0.42.0").isEqualTo(dependencySubstitutions[1].second)
     assertThat(
             "The hermes-engine artifact was deprecated in favor of hermes-android due to https://github.com/facebook/react-native/issues/35210."
         )
         .isEqualTo(dependencySubstitutions[1].third)
-    assertThat("com.facebook.react:hermes-android").isEqualTo(dependencySubstitutions[2].first)
-    assertThat("io.github.test.hermes:hermes-android:0.42.0")
-        .isEqualTo(dependencySubstitutions[2].second)
-    assertThat("The hermes-android artifact was moved to com.facebook.hermes publishing group.")
-        .isEqualTo(dependencySubstitutions[2].third)
-    assertThat("com.facebook.react:react-android").isEqualTo(dependencySubstitutions[3].first)
-    assertThat("io.github.test:react-android:0.42.0").isEqualTo(dependencySubstitutions[3].second)
+    assertThat("com.facebook.react:react-android").isEqualTo(dependencySubstitutions[2].first)
+    assertThat("io.github.test:react-android:0.42.0").isEqualTo(dependencySubstitutions[2].second)
     assertThat("The react-android dependency was modified to use the correct Maven group.")
-        .isEqualTo(dependencySubstitutions[3].third)
-    assertThat("com.facebook.react:hermes-android").isEqualTo(dependencySubstitutions[4].first)
-    assertThat("io.github.test.hermes:hermes-android:0.42.0")
-        .isEqualTo(dependencySubstitutions[4].second)
+        .isEqualTo(dependencySubstitutions[2].third)
+    assertThat("com.facebook.react:hermes-android").isEqualTo(dependencySubstitutions[3].first)
+    assertThat("io.github.test:hermes-android:0.42.0").isEqualTo(dependencySubstitutions[3].second)
     assertThat("The hermes-android dependency was modified to use the correct Maven group.")
-        .isEqualTo(dependencySubstitutions[4].third)
+        .isEqualTo(dependencySubstitutions[3].third)
   }
 
   @Test
@@ -543,20 +532,15 @@ class DependencyUtilsTest {
             "The hermes-engine artifact was deprecated in favor of hermes-android due to https://github.com/facebook/react-native/issues/35210."
         )
         .isEqualTo(dependencySubstitutions[1].third)
-    assertThat("com.facebook.react:hermes-android").isEqualTo(dependencySubstitutions[2].first)
-    assertThat("io.github.test.hermes:hermes-android:0.43.0")
-        .isEqualTo(dependencySubstitutions[2].second)
-    assertThat("The hermes-android artifact was moved to com.facebook.hermes publishing group.")
-        .isEqualTo(dependencySubstitutions[2].third)
-    assertThat("com.facebook.react:react-android").isEqualTo(dependencySubstitutions[3].first)
-    assertThat("io.github.test:react-android:0.42.0").isEqualTo(dependencySubstitutions[3].second)
+    assertThat("com.facebook.react:react-android").isEqualTo(dependencySubstitutions[2].first)
+    assertThat("io.github.test:react-android:0.42.0").isEqualTo(dependencySubstitutions[2].second)
     assertThat("The react-android dependency was modified to use the correct Maven group.")
-        .isEqualTo(dependencySubstitutions[3].third)
-    assertThat("com.facebook.react:hermes-android").isEqualTo(dependencySubstitutions[4].first)
+        .isEqualTo(dependencySubstitutions[2].third)
+    assertThat("com.facebook.react:hermes-android").isEqualTo(dependencySubstitutions[3].first)
     assertThat("io.github.test.hermes:hermes-android:0.43.0")
-        .isEqualTo(dependencySubstitutions[4].second)
+        .isEqualTo(dependencySubstitutions[3].second)
     assertThat("The hermes-android dependency was modified to use the correct Maven group.")
-        .isEqualTo(dependencySubstitutions[4].third)
+        .isEqualTo(dependencySubstitutions[3].third)
   }
 
   @Test
@@ -576,7 +560,6 @@ class DependencyUtilsTest {
         tempFolder.newFile("version.properties").apply {
           writeText(
               """
-              HERMES_VERSION_NAME=1000.0.0
               HERMES_V1_VERSION_NAME=1000.0.0
               ANOTHER_PROPERTY=true
               """
@@ -613,7 +596,6 @@ class DependencyUtilsTest {
         tempFolder.newFile("version.properties").apply {
           writeText(
               """
-              HERMES_VERSION_NAME=0.14.0
               HERMES_V1_VERSION_NAME=250829098.0.0-stable
               ANOTHER_PROPERTY=true
               """
@@ -627,7 +609,7 @@ class DependencyUtilsTest {
     val hermesV1VersionString = strings.hermesV1VersionString
 
     assertThat(versionString).isEqualTo("0.0.0-20221101-2019-cfe811ab1-SNAPSHOT")
-    assertThat(hermesVersionString).isEqualTo("0.14.0")
+    assertThat(hermesVersionString).isEqualTo("0.0.0-20221101-2019-cfe811ab1-SNAPSHOT")
     assertThat(hermesV1VersionString).isEqualTo("250829098.0.0-stable")
   }
 
@@ -679,7 +661,6 @@ class DependencyUtilsTest {
         tempFolder.newFile("version.properties").apply {
           writeText(
               """
-              HERMES_VERSION_NAME=
               HERMES_V1_VERSION_NAME=
               ANOTHER_PROPERTY=true
               """
@@ -714,7 +695,6 @@ class DependencyUtilsTest {
         tempFolder.newFile("version.properties").apply {
           writeText(
               """
-              HERMES_VERSION_NAME=
               HERMES_V1_VERSION_NAME=
               ANOTHER_PROPERTY=true
               """
@@ -746,7 +726,6 @@ class DependencyUtilsTest {
         tempFolder.newFile("version.properties").apply {
           writeText(
               """
-              HERMES_VERSION_NAME=
               HERMES_V1_VERSION_NAME=
               ANOTHER_PROPERTY=true
               """

packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/PathUtilsTest.kt

@@ -155,11 +155,21 @@ class PathUtilsTest {
 
   @Test
   @WithOs(OS.MAC)
-  fun detectOSAwareHermesCommand_withHermescFromNPM() {
+  fun detectOSAwareHermesCommand_withBundledHermescInsideRN() {
+    tempFolder.newFolder("node_modules/react-native/sdks/hermesc/osx-bin/")
+    val expected = tempFolder.newFile("node_modules/react-native/sdks/hermesc/osx-bin/hermesc")
+
+    assertThat(detectOSAwareHermesCommand(tempFolder.root, "")).isEqualTo(expected.toString())
+  }
+
+  @Test
+  @WithOs(OS.MAC)
+  fun detectOSAwareHermesCommand_withHermesV1Enabled() {
     tempFolder.newFolder("node_modules/hermes-compiler/hermesc/osx-bin/")
     val expected = tempFolder.newFile("node_modules/hermes-compiler/hermesc/osx-bin/hermesc")
 
-    assertThat(detectOSAwareHermesCommand(tempFolder.root, "")).isEqualTo(expected.toString())
+    assertThat(detectOSAwareHermesCommand(tempFolder.root, "", hermesV1Enabled = true))
+        .isEqualTo(expected.toString())
   }
 
   @Test(expected = IllegalStateException::class)

packages/metro-config/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/metro-config",
-  "version": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "Metro configuration for React Native.",
   "license": "MIT",
   "repository": {
@@ -26,9 +26,9 @@
     "dist"
   ],
   "dependencies": {
-    "@react-native/js-polyfills": "0.83.0-main",
-    "@react-native/metro-babel-transformer": "0.83.0-main",
-    "metro-config": "^0.83.3",
-    "metro-runtime": "^0.83.3"
+    "@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"
   }
 }

packages/new-app-screen/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/new-app-screen",
-  "version": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "NewAppScreen component for React Native",
   "keywords": [
     "react-native"

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

@@ -123,8 +123,7 @@ function getHermesLabel(): React.Node {
 
   return (
     <ThemedText color="secondary" style={styles.label}>
-      JS Engine: Hermes (
-      {global.HermesInternal.getRuntimeProperties?.()['OSS Release Version']})
+      JS Engine: Hermes
     </ThemedText>
   );
 }

packages/normalize-color/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/normalize-colors",
-  "version": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "Color normalization for React Native.",
   "license": "MIT",
   "repository": {

packages/polyfills/__tests__/consoleTimeStamp-itest.js

@@ -26,9 +26,7 @@ describe('console.timeStamp()', () => {
 
   it("doesn't throw when additional arguments are specified", () => {
     expect(() =>
-      console.timeStamp('label', 100, 500, 'Track', 'Group', 'error', {
-        tooltipText: 'Image processing failed',
-      }),
+      console.timeStamp('label', 100, 500, 'Track', 'Group', 'error'),
     ).not.toThrow();
   });
 

packages/polyfills/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/js-polyfills",
-  "version": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main",
+    "@react-native/babel-plugin-codegen": "0.82.0-main",
     "babel-plugin-syntax-hermes-parser": "0.32.0",
     "babel-plugin-transform-flow-enums": "^0.0.2",
     "react-refresh": "^0.14.0"

packages/react-native-babel-preset/src/configs/main.js

@@ -20,10 +20,6 @@ const EXCLUDED_FIRST_PARTY_PATHS = [
   /[/\\]private[/\\]react-native-fantom[/\\]/,
 ];
 
-// customTransformOptions may be strings from URL params, or booleans passed
-// programatically. For strings, handle them as Metro does when parsing URLs.
-const TRUE_VALS = new Set([true, 'true', '1']);
-
 function isTypeScriptSource(fileName) {
   return !!fileName && fileName.endsWith('.ts');
 }
@@ -59,9 +55,6 @@ const getPreset = (src, options) => {
 
   const isNull = src == null;
   const hasClass = isNull || src.indexOf('class') !== -1;
-  const preserveClasses = TRUE_VALS.has(
-    options?.customTransformOptions?.unstable_preserveClasses,
-  );
 
   const extraPlugins = [];
   const firstPartyPlugins = [];
@@ -98,7 +91,7 @@ const getPreset = (src, options) => {
     );
   }
 
-  if (hasClass && !preserveClasses) {
+  if (hasClass) {
     extraPlugins.push([require('@babel/plugin-transform-classes')]);
   }
 
@@ -242,9 +235,7 @@ const getPreset = (src, options) => {
           ],
           [require('babel-plugin-transform-flow-enums')],
           [require('@babel/plugin-transform-block-scoping')],
-          ...(preserveClasses
-            ? []
-            : [[require('@babel/plugin-transform-class-properties'), {loose}]]),
+          [require('@babel/plugin-transform-class-properties'), {loose}],
           [require('@babel/plugin-transform-private-methods'), {loose}],
           [
             require('@babel/plugin-transform-private-property-in-object'),

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

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/metro-babel-transformer",
-  "version": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main",
+    "@react-native/babel-preset": "0.82.0-main",
     "hermes-parser": "0.32.0",
     "nullthrows": "^1.1.1"
   },

packages/react-native-codegen/e2e/deep_imports/__tests__/modules/GenerateModuleCpp-test.js

@@ -0,0 +1,51 @@
+/**
+ * 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
+ */
+
+'use strict';
+
+import type {SchemaType} from '../../../../src/CodegenSchema';
+
+const generator = require('../../../../src/generators/modules/GenerateModuleCpp');
+const {FlowParser} = require('../../../../src/parsers/flow/parser');
+const fs = require('fs');
+
+const FIXTURE_DIR = `${__dirname}/../../__test_fixtures__/modules`;
+
+const parser = new FlowParser();
+
+function getModules(): SchemaType {
+  const filenames: Array<string> = fs.readdirSync(FIXTURE_DIR);
+  return filenames.reduce<SchemaType>(
+    (accumulator, file) => {
+      const schema = parser.parseFile(`${FIXTURE_DIR}/${file}`);
+      return {
+        modules: {
+          ...accumulator.modules,
+          ...schema.modules,
+        },
+      };
+    },
+    {modules: {}},
+  );
+}
+
+describe('GenerateModuleCpp', () => {
+  it('can generate an implementation file NativeModule specs', () => {
+    const libName = 'RNCodegenModuleFixtures';
+    const output = generator.generate(libName, getModules(), undefined, false);
+    expect(output.get(libName + 'JSI-generated.cpp')).toMatchSnapshot();
+  });
+
+  it('can generate a header file NativeModule specs with assume nonnull enabled', () => {
+    const libName = 'RNCodegenModuleFixtures';
+    const output = generator.generate(libName, getModules(), undefined, true);
+    expect(output.get(libName + 'JSI-generated.cpp')).toMatchSnapshot();
+  });
+});

packages/react-native-codegen/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/codegen",
-  "version": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "Code generation tools for React Native",
   "license": "MIT",
   "repository": {

packages/react-native-codegen/src/generators/RNCodegen.js

@@ -36,6 +36,7 @@ const generateTests = require('./components/GenerateTests.js');
 const generateThirdPartyFabricComponentsProviderH = require('./components/GenerateThirdPartyFabricComponentsProviderH.js');
 const generateThirdPartyFabricComponentsProviderObjCpp = require('./components/GenerateThirdPartyFabricComponentsProviderObjCpp.js');
 const generateViewConfigJs = require('./components/GenerateViewConfigJs.js');
+const generateModuleCpp = require('./modules/GenerateModuleCpp.js');
 const generateModuleH = require('./modules/GenerateModuleH.js');
 const generateModuleJavaSpec = require('./modules/GenerateModuleJavaSpec.js');
 const generateModuleJniCpp = require('./modules/GenerateModuleJniCpp.js');
@@ -55,6 +56,7 @@ const ALL_GENERATORS = {
   generateStateCpp: generateStateCpp.generate,
   generateStateH: generateStateH.generate,
   generateModuleH: generateModuleH.generate,
+  generateModuleCpp: generateModuleCpp.generate,
   generateModuleObjCpp: generateModuleObjCpp.generate,
   generateModuleJavaSpec: generateModuleJavaSpec.generate,
   generateModuleJniCpp: generateModuleJniCpp.generate,
@@ -177,7 +179,7 @@ const LIBRARY_GENERATORS: LibraryGeneratorsFunctions = {
     generateModuleJniH.generate,
     generateModuleJavaSpec.generate,
   ],
-  modulesCxx: [generateModuleH.generate],
+  modulesCxx: [generateModuleCpp.generate, generateModuleH.generate],
   modulesIOS: [generateModuleObjCpp.generate],
   tests: [generateTests.generate],
   'shadow-nodes': [

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

@@ -0,0 +1,296 @@
+/**
+ * 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
+ * @format
+ */
+
+'use strict';
+
+import type {
+  NamedShape,
+  NativeModuleEnumMap,
+  NativeModuleFunctionTypeAnnotation,
+  NativeModuleParamTypeAnnotation,
+  NativeModulePropertyShape,
+  NativeModuleTypeAnnotation,
+  Nullable,
+  SchemaType,
+} from '../../CodegenSchema';
+import type {AliasResolver} from './Utils';
+
+const {unwrapNullable} = require('../../parsers/parsers-commons');
+const {createAliasResolver, getModules} = require('./Utils');
+
+type FilesOutput = Map<string, string>;
+
+const HostFunctionTemplate = ({
+  hasteModuleName,
+  methodName,
+  returnTypeAnnotation,
+  args,
+}: $ReadOnly<{
+  hasteModuleName: string,
+  methodName: string,
+  returnTypeAnnotation: Nullable<NativeModuleTypeAnnotation>,
+  args: Array<string>,
+}>) => {
+  const isNullable = returnTypeAnnotation.type === 'NullableTypeAnnotation';
+  const isVoid = returnTypeAnnotation.type === 'VoidTypeAnnotation';
+  const methodCallArgs = ['    rt', ...args].join(',\n    ');
+  const methodCall = `static_cast<${hasteModuleName}CxxSpecJSI *>(&turboModule)->${methodName}(\n${methodCallArgs}\n  )`;
+
+  return `static jsi::Value __hostFunction_${hasteModuleName}CxxSpecJSI_${methodName}(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {${
+    isVoid
+      ? `\n  ${methodCall};`
+      : isNullable
+        ? `\n  auto result = ${methodCall};`
+        : ''
+  }
+  return ${
+    isVoid
+      ? 'jsi::Value::undefined()'
+      : isNullable
+        ? 'result ? jsi::Value(std::move(*result)) : jsi::Value::null()'
+        : methodCall
+  };
+}`;
+};
+
+const ModuleTemplate = ({
+  hasteModuleName,
+  hostFunctions,
+  moduleName,
+  methods,
+}: $ReadOnly<{
+  hasteModuleName: string,
+  hostFunctions: $ReadOnlyArray<string>,
+  moduleName: string,
+  methods: $ReadOnlyArray<$ReadOnly<{methodName: string, paramCount: number}>>,
+}>) => {
+  return `${hostFunctions.join('\n')}
+
+${hasteModuleName}CxxSpecJSI::${hasteModuleName}CxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule("${moduleName}", jsInvoker) {
+${methods
+  .map(({methodName, paramCount}) => {
+    return `  methodMap_["${methodName}"] = MethodMetadata {${paramCount}, __hostFunction_${hasteModuleName}CxxSpecJSI_${methodName}};`;
+  })
+  .join('\n')}
+}`;
+};
+
+const FileTemplate = ({
+  libraryName,
+  modules,
+}: $ReadOnly<{
+  libraryName: string,
+  modules: string,
+}>) => {
+  return `/**
+ * 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.
+ *
+ * ${'@'}generated by codegen project: GenerateModuleCpp.js
+ */
+
+#include "${libraryName}JSI.h"
+
+namespace facebook::react {
+
+${modules}
+
+
+} // namespace facebook::react
+`;
+};
+
+type Param = NamedShape<Nullable<NativeModuleParamTypeAnnotation>>;
+
+function serializeArg(
+  moduleName: string,
+  arg: Param,
+  index: number,
+  resolveAlias: AliasResolver,
+  enumMap: NativeModuleEnumMap,
+): string {
+  const {typeAnnotation: nullableTypeAnnotation, optional} = arg;
+  const [typeAnnotation, nullable] =
+    unwrapNullable<NativeModuleParamTypeAnnotation>(nullableTypeAnnotation);
+
+  let realTypeAnnotation = typeAnnotation;
+  if (realTypeAnnotation.type === 'TypeAliasTypeAnnotation') {
+    realTypeAnnotation = resolveAlias(realTypeAnnotation.name);
+  }
+
+  function wrap(callback: (val: string) => string) {
+    const val = `args[${index}]`;
+    const expression = callback(val);
+
+    // param?: T
+    if (optional && !nullable) {
+      // throw new Error('are we hitting this case? ' + moduleName);
+      return `count <= ${index} || ${val}.isUndefined() ? std::nullopt : std::make_optional(${expression})`;
+    }
+
+    // param: ?T
+    // param?: ?T
+    if (nullable || optional) {
+      return `count <= ${index} || ${val}.isNull() || ${val}.isUndefined() ? std::nullopt : std::make_optional(${expression})`;
+    }
+
+    // param: T
+    return `count <= ${index} ? throw jsi::JSError(rt, "Expected argument in position ${index} to be passed") : ${expression}`;
+  }
+
+  switch (realTypeAnnotation.type) {
+    case 'ReservedTypeAnnotation':
+      switch (realTypeAnnotation.name) {
+        case 'RootTag':
+          return wrap(val => `${val}.asNumber()`);
+        default:
+          (realTypeAnnotation.name: empty);
+          throw new Error(
+            `Unknown prop type for "${arg.name}, found: ${realTypeAnnotation.name}"`,
+          );
+      }
+    case 'StringTypeAnnotation':
+      return wrap(val => `${val}.asString(rt)`);
+    case 'StringLiteralTypeAnnotation':
+      return wrap(val => `${val}.asString(rt)`);
+    case 'StringLiteralUnionTypeAnnotation':
+      return wrap(val => `${val}.asString(rt)`);
+    case 'BooleanTypeAnnotation':
+      return wrap(val => `${val}.asBool()`);
+    case 'EnumDeclaration':
+      switch (realTypeAnnotation.memberType) {
+        case 'NumberTypeAnnotation':
+          return wrap(val => `${val}.asNumber()`);
+        case 'StringTypeAnnotation':
+          return wrap(val => `${val}.asString(rt)`);
+        default:
+          throw new Error(
+            `Unknown enum type for "${arg.name}, found: ${realTypeAnnotation.type}"`,
+          );
+      }
+    case 'NumberTypeAnnotation':
+      return wrap(val => `${val}.asNumber()`);
+    case 'FloatTypeAnnotation':
+      return wrap(val => `${val}.asNumber()`);
+    case 'DoubleTypeAnnotation':
+      return wrap(val => `${val}.asNumber()`);
+    case 'Int32TypeAnnotation':
+      return wrap(val => `${val}.asNumber()`);
+    case 'NumberLiteralTypeAnnotation':
+      return wrap(val => `${val}.asNumber()`);
+    case 'ArrayTypeAnnotation':
+      return wrap(val => `${val}.asObject(rt).asArray(rt)`);
+    case 'FunctionTypeAnnotation':
+      return wrap(val => `${val}.asObject(rt).asFunction(rt)`);
+    case 'GenericObjectTypeAnnotation':
+      return wrap(val => `${val}.asObject(rt)`);
+    case 'UnionTypeAnnotation':
+      switch (typeAnnotation.memberType) {
+        case 'NumberTypeAnnotation':
+          return wrap(val => `${val}.asNumber()`);
+        case 'ObjectTypeAnnotation':
+          return wrap(val => `${val}.asObject(rt)`);
+        case 'StringTypeAnnotation':
+          return wrap(val => `${val}.asString(rt)`);
+        default:
+          throw new Error(
+            `Unsupported union member type for param  "${arg.name}, found: ${realTypeAnnotation.memberType}"`,
+          );
+      }
+    case 'ObjectTypeAnnotation':
+      return wrap(val => `${val}.asObject(rt)`);
+    case 'MixedTypeAnnotation':
+      return wrap(val => `jsi::Value(rt, ${val})`);
+    default:
+      (realTypeAnnotation.type: empty);
+      throw new Error(
+        `Unknown prop type for "${arg.name}, found: ${realTypeAnnotation.type}"`,
+      );
+  }
+}
+
+function serializePropertyIntoHostFunction(
+  moduleName: string,
+  hasteModuleName: string,
+  property: NativeModulePropertyShape,
+  resolveAlias: AliasResolver,
+  enumMap: NativeModuleEnumMap,
+): string {
+  const [propertyTypeAnnotation] =
+    unwrapNullable<NativeModuleFunctionTypeAnnotation>(property.typeAnnotation);
+
+  return HostFunctionTemplate({
+    hasteModuleName,
+    methodName: property.name,
+    returnTypeAnnotation: propertyTypeAnnotation.returnTypeAnnotation,
+    args: propertyTypeAnnotation.params.map((p, i) =>
+      serializeArg(moduleName, p, i, resolveAlias, enumMap),
+    ),
+  });
+}
+
+module.exports = {
+  generate(
+    libraryName: string,
+    schema: SchemaType,
+    packageName?: string,
+    assumeNonnull: boolean = false,
+    headerPrefix?: string,
+  ): FilesOutput {
+    const nativeModules = getModules(schema);
+
+    const modules = Object.keys(nativeModules)
+      .map((hasteModuleName: string) => {
+        const nativeModule = nativeModules[hasteModuleName];
+        const {
+          aliasMap,
+          enumMap,
+          spec: {methods},
+          moduleName,
+        } = nativeModule;
+        const resolveAlias = createAliasResolver(aliasMap);
+        const hostFunctions = methods.map(property =>
+          serializePropertyIntoHostFunction(
+            moduleName,
+            hasteModuleName,
+            property,
+            resolveAlias,
+            enumMap,
+          ),
+        );
+
+        return ModuleTemplate({
+          hasteModuleName,
+          hostFunctions,
+          moduleName,
+          methods: methods.map(
+            ({name: propertyName, typeAnnotation: nullableTypeAnnotation}) => {
+              const [{params}] = unwrapNullable(nullableTypeAnnotation);
+              return {
+                methodName: propertyName,
+                paramCount: params.length,
+              };
+            },
+          ),
+        });
+      })
+      .join('\n');
+
+    const fileName = `${libraryName}JSI-generated.cpp`;
+    const replacedTemplate = FileTemplate({
+      modules,
+      libraryName,
+    });
+    return new Map([[fileName, replacedTemplate]]);
+  },
+};

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

@@ -9,17 +9,17 @@
  */
 
 'use strict';
-
 import type {
   NamedShape,
-  NativeModuleAliasMap,
   NativeModuleBaseTypeAnnotation,
+} from '../../CodegenSchema';
+import type {
+  NativeModuleAliasMap,
   NativeModuleEnumMap,
   NativeModuleEnumMember,
   NativeModuleEnumMemberType,
   NativeModuleEventEmitterShape,
   NativeModuleFunctionTypeAnnotation,
-  NativeModuleParamTypeAnnotation,
   NativeModulePropertyShape,
   NativeModuleTypeAnnotation,
   Nullable,
@@ -30,6 +30,7 @@ import type {AliasResolver} from './Utils';
 const {unwrapNullable} = require('../../parsers/parsers-commons');
 const {wrapOptional} = require('../TypeUtils/Cxx');
 const {getEnumName, toPascalCase, toSafeCppString} = require('../Utils');
+const {indent} = require('../Utils');
 const {
   createAliasResolver,
   getModules,
@@ -39,151 +40,74 @@ const {
 
 type FilesOutput = Map<string, string>;
 
-type Param = NamedShape<Nullable<NativeModuleParamTypeAnnotation>>;
+const ModuleClassDeclarationTemplate = ({
+  hasteModuleName,
+  moduleProperties,
+  structs,
+  enums,
+}: $ReadOnly<{
+  hasteModuleName: string,
+  moduleProperties: string[],
+  structs: string,
+  enums: string,
+}>) => {
+  return `${enums}
+  ${structs}class JSI_EXPORT ${hasteModuleName}CxxSpecJSI : public TurboModule {
+protected:
+  ${hasteModuleName}CxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker);
 
-function serializeArg(
-  moduleName: string,
-  arg: Param,
-  index: number,
-  resolveAlias: AliasResolver,
-  enumMap: NativeModuleEnumMap,
-): string {
-  const {typeAnnotation: nullableTypeAnnotation, optional} = arg;
-  const [typeAnnotation, nullable] =
-    unwrapNullable<NativeModuleParamTypeAnnotation>(nullableTypeAnnotation);
+public:
+  ${indent(moduleProperties.join('\n'), 2)}
 
-  let realTypeAnnotation = typeAnnotation;
-  if (realTypeAnnotation.type === 'TypeAliasTypeAnnotation') {
-    realTypeAnnotation = resolveAlias(realTypeAnnotation.name);
-  }
-
-  function wrap(callback: (val: string) => string) {
-    const val = `args[${index}]`;
-    const expression = callback(val);
-
-    // param?: T
-    if (optional && !nullable) {
-      // throw new Error('are we hitting this case? ' + moduleName);
-      return `count <= ${index} || ${val}.isUndefined() ? std::nullopt : std::make_optional(${expression})`;
-    }
-
-    // param: ?T
-    // param?: ?T
-    if (nullable || optional) {
-      return `count <= ${index} || ${val}.isNull() || ${val}.isUndefined() ? std::nullopt : std::make_optional(${expression})`;
-    }
-
-    // param: T
-    return `count <= ${index} ? throw jsi::JSError(rt, "Expected argument in position ${index} to be passed") : ${expression}`;
-  }
-
-  switch (realTypeAnnotation.type) {
-    case 'ReservedTypeAnnotation':
-      switch (realTypeAnnotation.name) {
-        case 'RootTag':
-          return wrap(val => `${val}.asNumber()`);
-        default:
-          (realTypeAnnotation.name: empty);
-          throw new Error(
-            `Unknown prop type for "${arg.name}, found: ${realTypeAnnotation.name}"`,
-          );
-      }
-    case 'StringTypeAnnotation':
-      return wrap(val => `${val}.asString(rt)`);
-    case 'StringLiteralTypeAnnotation':
-      return wrap(val => `${val}.asString(rt)`);
-    case 'StringLiteralUnionTypeAnnotation':
-      return wrap(val => `${val}.asString(rt)`);
-    case 'BooleanTypeAnnotation':
-      return wrap(val => `${val}.asBool()`);
-    case 'EnumDeclaration':
-      switch (realTypeAnnotation.memberType) {
-        case 'NumberTypeAnnotation':
-          return wrap(val => `${val}.asNumber()`);
-        case 'StringTypeAnnotation':
-          return wrap(val => `${val}.asString(rt)`);
-        default:
-          throw new Error(
-            `Unknown enum type for "${arg.name}, found: ${realTypeAnnotation.type}"`,
-          );
-      }
-    case 'NumberTypeAnnotation':
-      return wrap(val => `${val}.asNumber()`);
-    case 'FloatTypeAnnotation':
-      return wrap(val => `${val}.asNumber()`);
-    case 'DoubleTypeAnnotation':
-      return wrap(val => `${val}.asNumber()`);
-    case 'Int32TypeAnnotation':
-      return wrap(val => `${val}.asNumber()`);
-    case 'NumberLiteralTypeAnnotation':
-      return wrap(val => `${val}.asNumber()`);
-    case 'ArrayTypeAnnotation':
-      return wrap(val => `${val}.asObject(rt).asArray(rt)`);
-    case 'FunctionTypeAnnotation':
-      return wrap(val => `${val}.asObject(rt).asFunction(rt)`);
-    case 'GenericObjectTypeAnnotation':
-      return wrap(val => `${val}.asObject(rt)`);
-    case 'UnionTypeAnnotation':
-      switch (typeAnnotation.memberType) {
-        case 'NumberTypeAnnotation':
-          return wrap(val => `${val}.asNumber()`);
-        case 'ObjectTypeAnnotation':
-          return wrap(val => `${val}.asObject(rt)`);
-        case 'StringTypeAnnotation':
-          return wrap(val => `${val}.asString(rt)`);
-        default:
-          throw new Error(
-            `Unsupported union member type for param  "${arg.name}, found: ${realTypeAnnotation.memberType}"`,
-          );
-      }
-    case 'ObjectTypeAnnotation':
-      return wrap(val => `${val}.asObject(rt)`);
-    case 'MixedTypeAnnotation':
-      return wrap(val => `jsi::Value(rt, ${val})`);
-    default:
-      (realTypeAnnotation.type: empty);
-      throw new Error(
-        `Unknown prop type for "${arg.name}, found: ${realTypeAnnotation.type}"`,
-      );
-  }
-}
+};`;
+};
 
 const ModuleSpecClassDeclarationTemplate = ({
   hasteModuleName,
   moduleName,
-  structs,
-  enums,
   moduleEventEmitters,
-  moduleFunctions,
-  methods,
+  moduleProperties,
 }: $ReadOnly<{
   hasteModuleName: string,
   moduleName: string,
-  structs: string,
-  enums: string,
   moduleEventEmitters: EventEmitterCpp[],
-  moduleFunctions: string[],
-  methods: $ReadOnlyArray<$ReadOnly<{methodName: string, paramCount: number}>>,
+  moduleProperties: string[],
 }>) => {
-  return `${enums}${structs}
-template <typename T>
+  return `template <typename T>
 class JSI_EXPORT ${hasteModuleName}CxxSpec : public TurboModule {
 public:
+  jsi::Value create(jsi::Runtime &rt, const jsi::PropNameID &propName) override {
+    return delegate_.create(rt, propName);
+  }
+
+  std::vector<jsi::PropNameID> getPropertyNames(jsi::Runtime& runtime) override {
+    return delegate_.getPropertyNames(runtime);
+  }
+
   static constexpr std::string_view kModuleName = "${moduleName}";
 
 protected:
-  ${hasteModuleName}CxxSpec(std::shared_ptr<CallInvoker> jsInvoker) : TurboModule(std::string{${hasteModuleName}CxxSpec::kModuleName}, jsInvoker) {
-${methods
-  .map(({methodName, paramCount}) => {
-    return `    methodMap_["${methodName}"] = MethodMetadata {.argCount = ${paramCount}, .invoker = __${methodName}};`;
-  })
-  .join(
-    '\n',
-  )}${moduleEventEmitters.length > 0 ? '\n' : ''}${moduleEventEmitters.map(e => e.registerEventEmitter).join('\n')}
-  }
-  ${moduleEventEmitters.map(e => e.emitFunction).join('\n')}
+  ${hasteModuleName}CxxSpec(std::shared_ptr<CallInvoker> jsInvoker)
+    : TurboModule(std::string{${hasteModuleName}CxxSpec::kModuleName}, jsInvoker),
+      delegate_(reinterpret_cast<T*>(this), jsInvoker) {}
+${moduleEventEmitters.map(e => e.emitFunction).join('\n')}
+
 private:
-${moduleFunctions.join('\n\n')}
+  class Delegate : public ${hasteModuleName}CxxSpecJSI {
+  public:
+    Delegate(T *instance, std::shared_ptr<CallInvoker> jsInvoker) :
+      ${hasteModuleName}CxxSpecJSI(std::move(jsInvoker)), instance_(instance) {
+${moduleEventEmitters.map(e => e.registerEventEmitter).join('\n')}
+    }
+
+    ${indent(moduleProperties.join('\n'), 4)}
+
+  private:
+    friend class ${hasteModuleName}CxxSpec;
+    T *instance_;
+  };
+
+  Delegate delegate_;
 };`;
 };
 
@@ -368,7 +292,7 @@ function createStructsString(
     return bridging::toJs(rt, value);
   }`,
         )
-        .join('\n');
+        .join('\n\n');
       return `
 #pragma mark - ${structName}
 
@@ -552,19 +476,19 @@ function createEnums(
     .join('\n');
 }
 
-function translateFunctionToCpp(
+function translatePropertyToCpp(
   hasteModuleName: string,
   prop: NativeModulePropertyShape,
   resolveAlias: AliasResolver,
   enumMap: NativeModuleEnumMap,
-  args: Array<string>,
-  returnTypeAnnotation: Nullable<NativeModuleTypeAnnotation>,
+  abstract: boolean = false,
 ): string {
   const [propTypeAnnotation] =
     unwrapNullable<NativeModuleFunctionTypeAnnotation>(prop.typeAnnotation);
 
-  const isNullable = returnTypeAnnotation.type === 'NullableTypeAnnotation';
-  const isVoid = returnTypeAnnotation.type === 'VoidTypeAnnotation';
+  const params = propTypeAnnotation.params.map(
+    param => `std::move(${param.name})`,
+  );
 
   const paramTypes = propTypeAnnotation.params.map(param => {
     const translatedParam = translatePrimitiveJSTypeToCpp(
@@ -579,7 +503,6 @@ function translateFunctionToCpp(
     );
     return `${translatedParam} ${param.name}`;
   });
-  paramTypes.unshift('jsi::Runtime &rt');
 
   const returnType = translatePrimitiveJSTypeToCpp(
     hasteModuleName,
@@ -591,16 +514,23 @@ function translateFunctionToCpp(
     enumMap,
   );
 
-  let methodCallArgs = [...args].join(',\n      ');
-  if (methodCallArgs.length > 0) {
-    methodCallArgs = `,\n      ${methodCallArgs}`;
+  // The first param will always be the runtime reference.
+  paramTypes.unshift('jsi::Runtime &rt');
+
+  const method = `${returnType} ${prop.name}(${paramTypes.join(', ')})`;
+
+  if (abstract) {
+    return `virtual ${method} = 0;`;
   }
 
-  return `  static jsi::Value __${prop.name}(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* ${args.length > 0 ? 'args' : '/*args*/'}, size_t ${args.length > 0 ? 'count' : '/*count*/'}) {
-    static_assert(
+  return `${method} override {
+  static_assert(
       bridging::getParameterCount(&T::${prop.name}) == ${paramTypes.length},
       "Expected ${prop.name}(...) to have ${paramTypes.length} parameters");
-    ${!isVoid ? (!isNullable ? 'return ' : 'auto result = ') : ''}bridging::callFromJs<${returnType}>(rt, &T::${prop.name},  static_cast<${hasteModuleName}CxxSpec*>(&turboModule)->jsInvoker_, static_cast<T*>(&turboModule)${methodCallArgs});${!isVoid ? (!isNullable ? '' : 'return result ? jsi::Value(std::move(*result)) : jsi::Value::null();') : 'return jsi::Value::undefined();'}\n  }`;
+
+  return bridging::callFromJs<${returnType}>(
+      rt, &T::${prop.name}, jsInvoker_, ${['instance_', ...params].join(', ')});
+}`;
 }
 
 type EventEmitterCpp = {
@@ -633,7 +563,7 @@ function translateEventEmitterToCpp(
   return {
     isVoidTypeAnnotation: isVoidTypeAnnotation,
     templateName: isVoidTypeAnnotation ? `/*${templateName}*/` : templateName,
-    registerEventEmitter: `    eventEmitterMap_["${
+    registerEventEmitter: `      eventEmitterMap_["${
       eventEmitter.name
     }"] = std::make_shared<AsyncEventEmitter<${
       isVoidTypeAnnotation ? '' : 'jsi::Value'
@@ -655,7 +585,7 @@ function translateEventEmitterToCpp(
   }
     static_cast<AsyncEventEmitter<${
       isVoidTypeAnnotation ? '' : 'jsi::Value'
-    }>&>(*eventEmitterMap_["${eventEmitter.name}"]).emit(${
+    }>&>(*delegate_.eventEmitterMap_["${eventEmitter.name}"]).emit(${
       isVoidTypeAnnotation
         ? ''
         : `[jsInvoker = jsInvoker_, eventValue = value](jsi::Runtime& rt) -> jsi::Value {
@@ -677,14 +607,8 @@ module.exports = {
     const nativeModules = getModules(schema);
 
     const modules = Object.keys(nativeModules).flatMap(hasteModuleName => {
-      const nativeModule = nativeModules[hasteModuleName];
-      const {
-        aliasMap,
-        enumMap,
-        spec: {methods},
-        spec,
-        moduleName,
-      } = nativeModule;
+      const {aliasMap, enumMap, spec, moduleName} =
+        nativeModules[hasteModuleName];
       const resolveAlias = createAliasResolver(aliasMap);
       const structs = createStructsString(
         hasteModuleName,
@@ -693,12 +617,25 @@ module.exports = {
         enumMap,
       );
       const enums = createEnums(hasteModuleName, enumMap, resolveAlias);
+
       return [
+        ModuleClassDeclarationTemplate({
+          hasteModuleName,
+          moduleProperties: spec.methods.map(prop =>
+            translatePropertyToCpp(
+              hasteModuleName,
+              prop,
+              resolveAlias,
+              enumMap,
+              true,
+            ),
+          ),
+          structs,
+          enums,
+        }),
         ModuleSpecClassDeclarationTemplate({
           hasteModuleName,
           moduleName,
-          structs,
-          enums,
           moduleEventEmitters: spec.eventEmitters.map(eventEmitter =>
             translateEventEmitterToCpp(
               moduleName,
@@ -707,30 +644,13 @@ module.exports = {
               enumMap,
             ),
           ),
-          moduleFunctions: spec.methods.map(property => {
-            const [propertyTypeAnnotation] =
-              unwrapNullable<NativeModuleFunctionTypeAnnotation>(
-                property.typeAnnotation,
-              );
-            return translateFunctionToCpp(
+          moduleProperties: spec.methods.map(prop =>
+            translatePropertyToCpp(
               hasteModuleName,
-              property,
+              prop,
               resolveAlias,
               enumMap,
-              propertyTypeAnnotation.params.map((p, i) =>
-                serializeArg(moduleName, p, i, resolveAlias, enumMap),
-              ),
-              propertyTypeAnnotation.returnTypeAnnotation,
-            );
-          }),
-          methods: methods.map(
-            ({name: propertyName, typeAnnotation: nullableTypeAnnotation}) => {
-              const [{params}] = unwrapNullable(nullableTypeAnnotation);
-              return {
-                methodName: propertyName,
-                paramCount: params.length,
-              };
-            },
+            ),
           ),
         }),
       ];

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

@@ -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.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const fixtures = require('../__test_fixtures__/fixtures.js');
+const generator = require('../GenerateModuleCpp.js');
+
+describe('GenerateModuleCpp', () => {
+  Object.keys(fixtures)
+    .sort()
+    .forEach(fixtureName => {
+      const fixture = fixtures[fixtureName];
+
+      it(`can generate fixture ${fixtureName}`, () => {
+        expect(
+          generator.generate(
+            fixtureName,
+            fixture,
+            'com.facebook.fbreact.specs',
+          ),
+        ).toMatchSnapshot();
+      });
+    });
+});

packages/react-native-codegen/src/generators/modules/__tests__/__snapshots__/GenerateModuleCpp-test.js.snap

@@ -0,0 +1,782 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`GenerateModuleCpp can generate fixture SampleWithUppercaseName 1`] = `
+Map {
+  "SampleWithUppercaseNameJSI-generated.cpp" => "/**
+ * 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 \\"SampleWithUppercaseNameJSI.h\\"
+
+namespace facebook::react {
+
+
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule\\", jsInvoker) {
+
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture complex_objects 1`] = `
+Map {
+  "complex_objectsJSI-generated.cpp" => "/**
+ * 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 \\"complex_objectsJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_difficult(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->difficult(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_optionals(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->optionals(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_optionalMethod(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->optionalMethod(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asObject(rt).asFunction(rt),
+    count <= 2 || args[2].isUndefined() ? std::nullopt : std::make_optional(args[2].asObject(rt).asArray(rt))
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getArrays(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getArrays(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNullableObject(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  auto result = static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getNullableObject(
+    rt
+  );
+  return result ? jsi::Value(std::move(*result)) : jsi::Value::null();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNullableGenericObject(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  auto result = static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getNullableGenericObject(
+    rt
+  );
+  return result ? jsi::Value(std::move(*result)) : jsi::Value::null();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNullableArray(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  auto result = static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getNullableArray(
+    rt
+  );
+  return result ? jsi::Value(std::move(*result)) : jsi::Value::null();
+}
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule\\", jsInvoker) {
+  methodMap_[\\"difficult\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_difficult};
+  methodMap_[\\"optionals\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_optionals};
+  methodMap_[\\"optionalMethod\\"] = MethodMetadata {3, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_optionalMethod};
+  methodMap_[\\"getArrays\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getArrays};
+  methodMap_[\\"getNullableObject\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNullableObject};
+  methodMap_[\\"getNullableGenericObject\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNullableGenericObject};
+  methodMap_[\\"getNullableArray\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNullableArray};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture cxx_only_native_modules 1`] = `
+Map {
+  "cxx_only_native_modulesJSI-generated.cpp" => "/**
+ * 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 \\"cxx_only_native_modulesJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getArray(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getArray(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt).asArray(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getBool(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getBool(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asBool()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getConstants(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getConstants(
+    rt
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getCustomEnum(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getCustomEnum(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getCustomHostObject(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getCustomHostObject(
+    rt
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_consumeCustomHostObject(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->consumeCustomHostObject(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getBinaryTreeNode(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getBinaryTreeNode(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getGraphNode(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getGraphNode(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNumEnum(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getNumEnum(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getStrEnum(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getStrEnum(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getMap(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getMap(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNumber(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getNumber(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getObject(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getObject(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getSet(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getSet(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt).asArray(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getString(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getString(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getUnion(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getUnion(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber(),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asString(rt),
+    count <= 2 ? throw jsi::JSError(rt, \\"Expected argument in position 2 to be passed\\") : args[2].asString(rt),
+    count <= 3 ? throw jsi::JSError(rt, \\"Expected argument in position 3 to be passed\\") : args[3].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValue(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getValue(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber(),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asString(rt),
+    count <= 2 ? throw jsi::JSError(rt, \\"Expected argument in position 2 to be passed\\") : args[2].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithCallback(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getValueWithCallback(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt).asFunction(rt)
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithPromise(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getValueWithPromise(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asBool()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getWithWithOptionalArgs(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  auto result = static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getWithWithOptionalArgs(
+    rt,
+    count <= 0 || args[0].isUndefined() ? std::nullopt : std::make_optional(args[0].asBool())
+  );
+  return result ? jsi::Value(std::move(*result)) : jsi::Value::null();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFunc(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->voidFunc(
+    rt
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_setMenu(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->setMenu(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_emitCustomDeviceEvent(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->emitCustomDeviceEvent(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt)
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFuncThrows(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->voidFuncThrows(
+    rt
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getObjectThrows(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getObjectThrows(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFuncAssert(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->voidFuncAssert(
+    rt
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getObjectAssert(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getObjectAssert(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModuleCxx\\", jsInvoker) {
+  methodMap_[\\"getArray\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getArray};
+  methodMap_[\\"getBool\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getBool};
+  methodMap_[\\"getConstants\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getConstants};
+  methodMap_[\\"getCustomEnum\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getCustomEnum};
+  methodMap_[\\"getCustomHostObject\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getCustomHostObject};
+  methodMap_[\\"consumeCustomHostObject\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_consumeCustomHostObject};
+  methodMap_[\\"getBinaryTreeNode\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getBinaryTreeNode};
+  methodMap_[\\"getGraphNode\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getGraphNode};
+  methodMap_[\\"getNumEnum\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNumEnum};
+  methodMap_[\\"getStrEnum\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getStrEnum};
+  methodMap_[\\"getMap\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getMap};
+  methodMap_[\\"getNumber\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNumber};
+  methodMap_[\\"getObject\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getObject};
+  methodMap_[\\"getSet\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getSet};
+  methodMap_[\\"getString\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getString};
+  methodMap_[\\"getUnion\\"] = MethodMetadata {4, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getUnion};
+  methodMap_[\\"getValue\\"] = MethodMetadata {3, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValue};
+  methodMap_[\\"getValueWithCallback\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithCallback};
+  methodMap_[\\"getValueWithPromise\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithPromise};
+  methodMap_[\\"getWithWithOptionalArgs\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getWithWithOptionalArgs};
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFunc};
+  methodMap_[\\"setMenu\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_setMenu};
+  methodMap_[\\"emitCustomDeviceEvent\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_emitCustomDeviceEvent};
+  methodMap_[\\"voidFuncThrows\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFuncThrows};
+  methodMap_[\\"getObjectThrows\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getObjectThrows};
+  methodMap_[\\"voidFuncAssert\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFuncAssert};
+  methodMap_[\\"getObjectAssert\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getObjectAssert};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture empty_native_modules 1`] = `
+Map {
+  "empty_native_modulesJSI-generated.cpp" => "/**
+ * 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 \\"empty_native_modulesJSI.h\\"
+
+namespace facebook::react {
+
+
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule\\", jsInvoker) {
+
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture event_emitter_module 1`] = `
+Map {
+  "event_emitter_moduleJSI-generated.cpp" => "/**
+ * 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 \\"event_emitter_moduleJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFunc(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->voidFunc(
+    rt
+  );
+  return jsi::Value::undefined();
+}
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule\\", jsInvoker) {
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFunc};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture native_modules_with_type_aliases 1`] = `
+Map {
+  "native_modules_with_type_aliasesJSI-generated.cpp" => "/**
+ * 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 \\"native_modules_with_type_aliasesJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_AliasTurboModuleCxxSpecJSI_getConstants(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<AliasTurboModuleCxxSpecJSI *>(&turboModule)->getConstants(
+    rt
+  );
+}
+static jsi::Value __hostFunction_AliasTurboModuleCxxSpecJSI_cropImage(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<AliasTurboModuleCxxSpecJSI *>(&turboModule)->cropImage(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+  return jsi::Value::undefined();
+}
+
+AliasTurboModuleCxxSpecJSI::AliasTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"AliasTurboModule\\", jsInvoker) {
+  methodMap_[\\"getConstants\\"] = MethodMetadata {0, __hostFunction_AliasTurboModuleCxxSpecJSI_getConstants};
+  methodMap_[\\"cropImage\\"] = MethodMetadata {1, __hostFunction_AliasTurboModuleCxxSpecJSI_cropImage};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture real_module_example 1`] = `
+Map {
+  "real_module_exampleJSI-generated.cpp" => "/**
+ * 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 \\"real_module_exampleJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeCameraRollManagerCxxSpecJSI_getConstants(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeCameraRollManagerCxxSpecJSI *>(&turboModule)->getConstants(
+    rt
+  );
+}
+static jsi::Value __hostFunction_NativeCameraRollManagerCxxSpecJSI_getPhotos(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeCameraRollManagerCxxSpecJSI *>(&turboModule)->getPhotos(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeCameraRollManagerCxxSpecJSI_saveToCameraRoll(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeCameraRollManagerCxxSpecJSI *>(&turboModule)->saveToCameraRoll(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asString(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeCameraRollManagerCxxSpecJSI_deletePhotos(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeCameraRollManagerCxxSpecJSI *>(&turboModule)->deletePhotos(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt).asArray(rt)
+  );
+}
+
+NativeCameraRollManagerCxxSpecJSI::NativeCameraRollManagerCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"CameraRollManager\\", jsInvoker) {
+  methodMap_[\\"getConstants\\"] = MethodMetadata {0, __hostFunction_NativeCameraRollManagerCxxSpecJSI_getConstants};
+  methodMap_[\\"getPhotos\\"] = MethodMetadata {1, __hostFunction_NativeCameraRollManagerCxxSpecJSI_getPhotos};
+  methodMap_[\\"saveToCameraRoll\\"] = MethodMetadata {2, __hostFunction_NativeCameraRollManagerCxxSpecJSI_saveToCameraRoll};
+  methodMap_[\\"deletePhotos\\"] = MethodMetadata {1, __hostFunction_NativeCameraRollManagerCxxSpecJSI_deletePhotos};
+}
+static jsi::Value __hostFunction_NativeExceptionsManagerCxxSpecJSI_reportFatalException(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeExceptionsManagerCxxSpecJSI *>(&turboModule)->reportFatalException(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asObject(rt).asArray(rt),
+    count <= 2 ? throw jsi::JSError(rt, \\"Expected argument in position 2 to be passed\\") : args[2].asNumber()
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeExceptionsManagerCxxSpecJSI_reportSoftException(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeExceptionsManagerCxxSpecJSI *>(&turboModule)->reportSoftException(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asObject(rt).asArray(rt),
+    count <= 2 ? throw jsi::JSError(rt, \\"Expected argument in position 2 to be passed\\") : args[2].asNumber()
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeExceptionsManagerCxxSpecJSI_reportException(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeExceptionsManagerCxxSpecJSI *>(&turboModule)->reportException(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeExceptionsManagerCxxSpecJSI_updateExceptionMessage(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeExceptionsManagerCxxSpecJSI *>(&turboModule)->updateExceptionMessage(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asObject(rt).asArray(rt),
+    count <= 2 ? throw jsi::JSError(rt, \\"Expected argument in position 2 to be passed\\") : args[2].asNumber()
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeExceptionsManagerCxxSpecJSI_dismissRedbox(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeExceptionsManagerCxxSpecJSI *>(&turboModule)->dismissRedbox(
+    rt
+  );
+  return jsi::Value::undefined();
+}
+
+NativeExceptionsManagerCxxSpecJSI::NativeExceptionsManagerCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"ExceptionsManager\\", jsInvoker) {
+  methodMap_[\\"reportFatalException\\"] = MethodMetadata {3, __hostFunction_NativeExceptionsManagerCxxSpecJSI_reportFatalException};
+  methodMap_[\\"reportSoftException\\"] = MethodMetadata {3, __hostFunction_NativeExceptionsManagerCxxSpecJSI_reportSoftException};
+  methodMap_[\\"reportException\\"] = MethodMetadata {1, __hostFunction_NativeExceptionsManagerCxxSpecJSI_reportException};
+  methodMap_[\\"updateExceptionMessage\\"] = MethodMetadata {3, __hostFunction_NativeExceptionsManagerCxxSpecJSI_updateExceptionMessage};
+  methodMap_[\\"dismissRedbox\\"] = MethodMetadata {0, __hostFunction_NativeExceptionsManagerCxxSpecJSI_dismissRedbox};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture simple_native_modules 1`] = `
+Map {
+  "simple_native_modulesJSI-generated.cpp" => "/**
+ * 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 \\"simple_native_modulesJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getConstants(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getConstants(
+    rt
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFunc(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->voidFunc(
+    rt
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getBool(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getBool(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asBool()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNumber(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getNumber(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getString(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getString(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getArray(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getArray(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt).asArray(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getObject(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getObject(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getRootTag(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getRootTag(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValue(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getValue(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber(),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asString(rt),
+    count <= 2 ? throw jsi::JSError(rt, \\"Expected argument in position 2 to be passed\\") : args[2].asObject(rt)
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getEnumReturn(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getEnumReturn(
+    rt
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithCallback(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getValueWithCallback(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asObject(rt).asFunction(rt)
+  );
+  return jsi::Value::undefined();
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithPromise(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getValueWithPromise(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asBool()
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithOptionalArg(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getValueWithOptionalArg(
+    rt,
+    count <= 0 || args[0].isUndefined() ? std::nullopt : std::make_optional(args[0].asObject(rt))
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getEnums(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getEnums(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber(),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asNumber(),
+    count <= 2 ? throw jsi::JSError(rt, \\"Expected argument in position 2 to be passed\\") : args[2].asString(rt)
+  );
+}
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule\\", jsInvoker) {
+  methodMap_[\\"getConstants\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getConstants};
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFunc};
+  methodMap_[\\"getBool\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getBool};
+  methodMap_[\\"getNumber\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getNumber};
+  methodMap_[\\"getString\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getString};
+  methodMap_[\\"getArray\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getArray};
+  methodMap_[\\"getObject\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getObject};
+  methodMap_[\\"getRootTag\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getRootTag};
+  methodMap_[\\"getValue\\"] = MethodMetadata {3, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValue};
+  methodMap_[\\"getEnumReturn\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getEnumReturn};
+  methodMap_[\\"getValueWithCallback\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithCallback};
+  methodMap_[\\"getValueWithPromise\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithPromise};
+  methodMap_[\\"getValueWithOptionalArg\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getValueWithOptionalArg};
+  methodMap_[\\"getEnums\\"] = MethodMetadata {3, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getEnums};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture string_literals 1`] = `
+Map {
+  "string_literalsJSI-generated.cpp" => "/**
+ * 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 \\"string_literalsJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getStringLiteral(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getStringLiteral(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asString(rt)
+  );
+}
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule\\", jsInvoker) {
+  methodMap_[\\"getStringLiteral\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getStringLiteral};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture two_modules_different_files 1`] = `
+Map {
+  "two_modules_different_filesJSI-generated.cpp" => "/**
+ * 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 \\"two_modules_different_filesJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFunc(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->voidFunc(
+    rt
+  );
+  return jsi::Value::undefined();
+}
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule\\", jsInvoker) {
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_voidFunc};
+}
+static jsi::Value __hostFunction_NativeSampleTurboModule2CxxSpecJSI_getConstants(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModule2CxxSpecJSI *>(&turboModule)->getConstants(
+    rt
+  );
+}
+static jsi::Value __hostFunction_NativeSampleTurboModule2CxxSpecJSI_voidFunc(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  static_cast<NativeSampleTurboModule2CxxSpecJSI *>(&turboModule)->voidFunc(
+    rt
+  );
+  return jsi::Value::undefined();
+}
+
+NativeSampleTurboModule2CxxSpecJSI::NativeSampleTurboModule2CxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule2\\", jsInvoker) {
+  methodMap_[\\"getConstants\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModule2CxxSpecJSI_getConstants};
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModule2CxxSpecJSI_voidFunc};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;
+
+exports[`GenerateModuleCpp can generate fixture union_module 1`] = `
+Map {
+  "union_moduleJSI-generated.cpp" => "/**
+ * 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 \\"union_moduleJSI.h\\"
+
+namespace facebook::react {
+
+static jsi::Value __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getUnion(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
+  return static_cast<NativeSampleTurboModuleCxxSpecJSI *>(&turboModule)->getUnion(
+    rt,
+    count <= 0 ? throw jsi::JSError(rt, \\"Expected argument in position 0 to be passed\\") : args[0].asNumber(),
+    count <= 1 ? throw jsi::JSError(rt, \\"Expected argument in position 1 to be passed\\") : args[1].asNumber(),
+    count <= 2 ? throw jsi::JSError(rt, \\"Expected argument in position 2 to be passed\\") : args[2].asObject(rt),
+    count <= 3 ? throw jsi::JSError(rt, \\"Expected argument in position 3 to be passed\\") : args[3].asString(rt),
+    count <= 4 ? throw jsi::JSError(rt, \\"Expected argument in position 4 to be passed\\") : args[4].asString(rt)
+  );
+}
+
+NativeSampleTurboModuleCxxSpecJSI::NativeSampleTurboModuleCxxSpecJSI(std::shared_ptr<CallInvoker> jsInvoker)
+  : TurboModule(\\"SampleTurboModule\\", jsInvoker) {
+  methodMap_[\\"getUnion\\"] = MethodMetadata {5, __hostFunction_NativeSampleTurboModuleCxxSpecJSI_getUnion};
+}
+
+
+} // namespace facebook::react
+",
+}
+`;

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

@@ -1,6 +1,6 @@
 {
   "name": "@react-native/compatibility-check",
-  "version": "0.83.0-main",
+  "version": "0.82.0-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": "0.83.0-main"
+    "@react-native/codegen": "0.82.0-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": "0.83.0-main",
+  "version": "0.82.0-main",
   "description": "PopupMenu for the Android platform",
   "main": "index.js",
   "files": [
@@ -21,7 +21,7 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "@react-native/codegen": "0.83.0-main"
+    "@react-native/codegen": "0.82.0-main"
   },
   "peerDependencies": {
     "@types/react": "^19.1.0",

packages/react-native/Libraries/Animated/__tests__/AnimatedBackend-itest.js

@@ -1,75 +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.
- *
- * @fantom_flags useSharedAnimatedBackend:true
- * @flow strict-local
- * @format
- */
-
-import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';
-
-import type {HostInstance} from 'react-native';
-
-import ensureInstance from '../../../src/private/__tests__/utilities/ensureInstance';
-import * as Fantom from '@react-native/fantom';
-import {createRef} from 'react';
-import {Animated, useAnimatedValue} from 'react-native';
-import ReactNativeElement from 'react-native/src/private/webapis/dom/nodes/ReactNativeElement';
-
-test('animated opacity', () => {
-  let _opacity;
-  let _opacityAnimation;
-  const viewRef = createRef<HostInstance>();
-
-  function MyApp() {
-    const opacity = useAnimatedValue(1);
-    _opacity = opacity;
-    return (
-      <Animated.View
-        ref={viewRef}
-        style={[
-          {
-            width: 100,
-            height: 100,
-            opacity: opacity,
-          },
-        ]}
-      />
-    );
-  }
-
-  const root = Fantom.createRoot();
-
-  Fantom.runTask(() => {
-    root.render(<MyApp />);
-  });
-
-  const viewElement = ensureInstance(viewRef.current, ReactNativeElement);
-
-  expect(viewElement.getBoundingClientRect().x).toBe(0);
-
-  Fantom.runTask(() => {
-    _opacityAnimation = Animated.timing(_opacity, {
-      toValue: 0,
-      duration: 30,
-      useNativeDriver: true,
-    }).start();
-  });
-
-  Fantom.unstable_produceFramesForDuration(30);
-  expect(Fantom.unstable_getDirectManipulationProps(viewElement).opacity).toBe(
-    0,
-  );
-
-  // TODO: this shouldn't be neccessary since animation should be stopped after duration
-  Fantom.runTask(() => {
-    _opacityAnimation?.stop();
-  });
-
-  expect(root.getRenderedOutput({props: ['opacity']}).toJSX()).toEqual(
-    <rn-view opacity="0" />,
-  );
-});

packages/react-native/Libraries/Animated/createAnimatedComponent.js

@@ -97,7 +97,7 @@ export default function createAnimatedComponent<
 >(
   Component: TInstance,
 ): AnimatedComponentType<
-  $ReadOnly<React.ElementConfig<TInstance>>,
+  $ReadOnly<React.ElementProps<TInstance>>,
   React.ElementRef<TInstance>,
 > {
   return unstable_createAnimatedComponentWithAllowlist(Component, null);

packages/react-native/Libraries/Animated/nodes/AnimatedColor.js

@@ -110,27 +110,6 @@ function isRgbaAnimatedValue(value: any): boolean {
   );
 }
 
-export function getRgbaValueAndNativeColor(
-  value: RgbaValue | ColorValue,
-): $ReadOnly<{
-  rgbaValue: RgbaValue,
-  nativeColor?: NativeColorValue,
-}> {
-  const processedColor: RgbaValue | NativeColorValue =
-    // $FlowFixMe[incompatible-type] - Type is verified above
-    processColor((value: ColorValue | RgbaValue)) ?? defaultColor;
-  if (isRgbaValue(processedColor)) {
-    // $FlowFixMe[incompatible-type] - Type is verified above
-    return {rgbaValue: (processedColor: RgbaValue)};
-  } else {
-    return {
-      // $FlowFixMe[incompatible-type] - Type is verified above
-      nativeColor: (processedColor: NativeColorValue),
-      rgbaValue: defaultColor,
-    };
-  }
-}
-
 export default class AnimatedColor extends AnimatedWithChildren {
   r: AnimatedValue;
   g: AnimatedValue;
@@ -153,13 +132,18 @@ export default class AnimatedColor extends AnimatedWithChildren {
       this.b = rgbaAnimatedValue.b;
       this.a = rgbaAnimatedValue.a;
     } else {
-      const {rgbaValue: initColor, nativeColor} = getRgbaValueAndNativeColor(
+      const processedColor: RgbaValue | NativeColorValue =
         // $FlowFixMe[incompatible-type] - Type is verified above
-        (value: ColorValue | RgbaValue),
-      );
-      if (nativeColor) {
-        this.nativeColor = nativeColor;
+        processColor((value: ColorValue | RgbaValue)) ?? defaultColor;
+      let initColor: RgbaValue = defaultColor;
+      if (isRgbaValue(processedColor)) {
+        // $FlowFixMe[incompatible-type] - Type is verified above
+        initColor = (processedColor: RgbaValue);
+      } else {
+        // $FlowFixMe[incompatible-type] - Type is verified above
+        this.nativeColor = (processedColor: NativeColorValue);
       }
+
       this.r = new AnimatedValue(initColor.r);
       this.g = new AnimatedValue(initColor.g);
       this.b = new AnimatedValue(initColor.b);

packages/react-native/Libraries/AppDelegate/RCTAppSetupUtils.mm

@@ -120,7 +120,6 @@ std::unique_ptr<facebook::react::JSExecutorFactory> RCTAppSetupDefaultJsExecutor
     RCTTurboModuleManager *turboModuleManager,
     const std::shared_ptr<facebook::react::RuntimeScheduler> &runtimeScheduler)
 {
-#ifndef RCT_REMOVE_LEGACY_ARCH
   // Necessary to allow NativeModules to lookup TurboModules
   [bridge setRCTTurboModuleRegistry:turboModuleManager];
 
@@ -147,18 +146,12 @@ std::unique_ptr<facebook::react::JSExecutorFactory> RCTAppSetupDefaultJsExecutor
   return std::make_unique<facebook::react::HermesExecutorFactory>(
       facebook::react::RCTJSIExecutorRuntimeInstaller(runtimeInstallerLambda));
 #endif
-#else
-  // This method should not be invoked in the New Arch. So when Legacy Arch is removed, we can
-  // safly return a nullptr.
-  return nullptr;
-#endif
 }
 
 std::unique_ptr<facebook::react::JSExecutorFactory> RCTAppSetupJsExecutorFactoryForOldArch(
     RCTBridge *bridge,
     const std::shared_ptr<facebook::react::RuntimeScheduler> &runtimeScheduler)
 {
-#ifndef RCT_REMOVE_LEGACY_ARCH
   auto runtimeInstallerLambda = [bridge, runtimeScheduler](facebook::jsi::Runtime &runtime) {
     if (!bridge) {
       return;
@@ -171,9 +164,4 @@ std::unique_ptr<facebook::react::JSExecutorFactory> RCTAppSetupJsExecutorFactory
   return std::make_unique<facebook::react::HermesExecutorFactory>(
       facebook::react::RCTJSIExecutorRuntimeInstaller(runtimeInstallerLambda));
 #endif
-#else
-  // This method should not be invoked in the New Arch. So when Legacy Arch is removed, we can
-  // safly return a nullptr.
-  return nullptr;
-#endif
 }

packages/react-native/Libraries/AppDelegate/RCTReactNativeFactory.h

@@ -24,7 +24,6 @@
 @class RCTBridge;
 @protocol RCTComponentViewProtocol;
 @class RCTSurfacePresenterBridgeAdapter;
-@class RCTDevMenuConfiguration;
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -117,8 +116,6 @@ typedef NS_ENUM(NSInteger, RCTReleaseLevel) { Canary, Experimental, Stable };
 
 @property (nonatomic, weak) id<RCTReactNativeFactoryDelegate> delegate;
 
-@property (nonatomic, nullable) RCTDevMenuConfiguration *devMenuConfiguration;
-
 @end
 
 NS_ASSUME_NONNULL_END

packages/react-native/Libraries/AppDelegate/RCTReactNativeFactory.mm

@@ -7,7 +7,6 @@
 
 #import "RCTReactNativeFactory.h"
 #import <React/RCTColorSpaceUtils.h>
-#import <React/RCTDevMenu.h>
 #import <React/RCTLog.h>
 #import <React/RCTRootView.h>
 #import <React/RCTSurfacePresenterBridgeAdapter.h>
@@ -83,8 +82,7 @@ using namespace facebook::react;
 {
   UIView *rootView = [self.rootViewFactory viewWithModuleName:moduleName
                                             initialProperties:initialProperties
-                                                launchOptions:launchOptions
-                                         devMenuConfiguration:self.devMenuConfiguration];
+                                                launchOptions:launchOptions];
   UIViewController *rootViewController = [_delegate createRootViewController];
   [_delegate setRootView:rootView toRootViewController:rootViewController];
   window.rootViewController = rootViewController;
@@ -261,12 +259,7 @@ using namespace facebook::react;
 
   configuration.sourceURLForBridge = ^NSURL *_Nullable(RCTBridge *_Nonnull bridge)
   {
-#ifndef RCT_REMOVE_LEGACY_ARCH
     return [weakSelf.delegate sourceURLForBridge:bridge];
-#else
-    // When the Legacy Arch is removed, the Delegate does not have a sourceURLForBridge method
-    return [weakSelf.delegate bundleURL];
-#endif
   };
 
   if ([self.delegate respondsToSelector:@selector(extraModulesForBridge:)]) {
@@ -280,24 +273,13 @@ using namespace facebook::react;
     configuration.extraLazyModuleClassesForBridge =
         ^NSDictionary<NSString *, Class> *_Nonnull(RCTBridge *_Nonnull bridge)
     {
-#ifndef RCT_REMOVE_LEGACY_ARCH
       return [weakSelf.delegate extraLazyModuleClassesForBridge:bridge];
-#else
-      // When the Legacy Arch is removed, the Delegate does not have a extraLazyModuleClassesForBridge method
-      return @{};
-#endif
     };
   }
 
   if ([self.delegate respondsToSelector:@selector(bridge:didNotFindModule:)]) {
     configuration.bridgeDidNotFindModule = ^BOOL(RCTBridge *_Nonnull bridge, NSString *_Nonnull moduleName) {
-#ifndef RCT_REMOVE_LEGACY_ARCH
       return [weakSelf.delegate bridge:bridge didNotFindModule:moduleName];
-#else
-      // When the Legacy Arch is removed, the Delegate does not have a bridge:didNotFindModule method
-      // We return NO, because if we have invoked this method is unlikely that the module will be actually registered
-      return NO;
-#endif
     };
   }
 
@@ -306,30 +288,13 @@ using namespace facebook::react;
         ^(RCTBridge *_Nonnull bridge,
           RCTSourceLoadProgressBlock _Nonnull onProgress,
           RCTSourceLoadBlock _Nonnull loadCallback) {
-#ifndef RCT_REMOVE_LEGACY_ARCH
           [weakSelf.delegate loadSourceForBridge:bridge onProgress:onProgress onComplete:loadCallback];
-#else
-          // When the Legacy Arch is removed, the Delegate does not have a
-          // loadSourceForBridge:onProgress:onComplete: method
-          // We then call the loadBundleAtURL:onProgress:onComplete: instead
-          [weakSelf.delegate loadBundleAtURL:self.bundleURL onProgress:onProgress onComplete:loadCallback];
-#endif
         };
   }
 
   if ([self.delegate respondsToSelector:@selector(loadSourceForBridge:withBlock:)]) {
     configuration.loadSourceForBridge = ^(RCTBridge *_Nonnull bridge, RCTSourceLoadBlock _Nonnull loadCallback) {
-#ifndef RCT_REMOVE_LEGACY_ARCH
       [weakSelf.delegate loadSourceForBridge:bridge withBlock:loadCallback];
-#else
-      // When the Legacy Arch is removed, the Delegate does not have a
-      // loadSourceForBridge:withBlock: method
-      // We then call the loadBundleAtURL:onProgress:onComplete: instead
-      [weakSelf.delegate loadBundleAtURL:self.bundleURL
-                              onProgress:^(RCTLoadingProgress *progressData) {
-                              }
-                              onComplete:loadCallback];
-#endif
     };
   }
 

packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.h

@@ -18,7 +18,6 @@
 @class RCTHost;
 @class RCTRootView;
 @class RCTSurfacePresenterBridgeAdapter;
-@class RCTDevMenuConfiguration;
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -202,13 +201,7 @@ typedef void (^RCTLoadSourceForBridgeBlock)(RCTBridge *bridge, RCTSourceLoadBloc
  * @parameter: moduleName  - the name of the app, used by Metro to resolve the module.
  * @parameter: initialProperties  -  a set of initial properties.
  * @parameter: launchOptions  - a dictionary with a set of options.
- * @parameter: devMenuConfiguration - a configuration for enabling/disabling dev menu.
  */
-- (UIView *_Nonnull)viewWithModuleName:(NSString *)moduleName
-                     initialProperties:(NSDictionary *__nullable)initialProperties
-                         launchOptions:(NSDictionary *__nullable)launchOptions
-                  devMenuConfiguration:(RCTDevMenuConfiguration *__nullable)devMenuConfiguration;
-
 - (UIView *_Nonnull)viewWithModuleName:(NSString *)moduleName
                      initialProperties:(NSDictionary *__nullable)initialProperties
                          launchOptions:(NSDictionary *__nullable)launchOptions;
@@ -226,16 +219,11 @@ typedef void (^RCTLoadSourceForBridgeBlock)(RCTBridge *bridge, RCTSourceLoadBloc
  * Use it to speed up later viewWithModuleName: calls.
  *
  * @parameter: launchOptions  - a dictionary with a set of options.
- * @parameter: devMenuConfiguration - a configuration for enabling/disabling dev menu.
  */
-- (void)initializeReactHostWithLaunchOptions:(NSDictionary *__nullable)launchOptions
-                        devMenuConfiguration:(RCTDevMenuConfiguration *)devMenuConfiguration;
+- (void)initializeReactHostWithLaunchOptions:(NSDictionary *__nullable)launchOptions;
 
 - (RCTHost *)createReactHost:(NSDictionary *__nullable)launchOptions;
 
-- (RCTHost *)createReactHost:(NSDictionary *__nullable)launchOptions
-        devMenuConfiguration:(RCTDevMenuConfiguration *__nullable)devMenuConfiguration;
-
 @end
 
 NS_ASSUME_NONNULL_END

packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.mm

@@ -7,7 +7,6 @@
 
 #import "RCTRootViewFactory.h"
 #import <React/RCTCxxBridgeDelegate.h>
-#import <React/RCTDevMenu.h>
 #import <React/RCTLog.h>
 #import <React/RCTRootView.h>
 #import <React/RCTSurfacePresenterBridgeAdapter.h>
@@ -134,47 +133,29 @@
 
 - (UIView *)viewWithModuleName:(NSString *)moduleName initialProperties:(NSDictionary *)initialProperties
 {
-  return [self viewWithModuleName:moduleName
-                initialProperties:initialProperties
-                    launchOptions:nil
-             devMenuConfiguration:[RCTDevMenuConfiguration defaultConfiguration]];
+  return [self viewWithModuleName:moduleName initialProperties:initialProperties launchOptions:nil];
 }
 
 - (UIView *)viewWithModuleName:(NSString *)moduleName
 {
-  return [self viewWithModuleName:moduleName
-                initialProperties:nil
-                    launchOptions:nil
-             devMenuConfiguration:[RCTDevMenuConfiguration defaultConfiguration]];
+  return [self viewWithModuleName:moduleName initialProperties:nil launchOptions:nil];
 }
 
 - (void)initializeReactHostWithLaunchOptions:(NSDictionary *)launchOptions
-                        devMenuConfiguration:(RCTDevMenuConfiguration *)devMenuConfiguration
 {
   // Enable TurboModule interop by default in Bridgeless mode
   RCTEnableTurboModuleInterop(YES);
   RCTEnableTurboModuleInteropBridgeProxy(YES);
 
-  [self createReactHostIfNeeded:launchOptions devMenuConfiguration:devMenuConfiguration];
+  [self createReactHostIfNeeded:launchOptions];
   return;
 }
 
-- (UIView *)viewWithModuleName:(NSString *)moduleName
-             initialProperties:(NSDictionary *)initialProperties
-                 launchOptions:(NSDictionary *)launchOptions
-{
-  return [self viewWithModuleName:moduleName
-                initialProperties:initialProperties
-                    launchOptions:launchOptions
-             devMenuConfiguration:[RCTDevMenuConfiguration defaultConfiguration]];
-}
-
 - (UIView *)viewWithModuleName:(NSString *)moduleName
              initialProperties:(NSDictionary *)initProps
                  launchOptions:(NSDictionary *)launchOptions
-          devMenuConfiguration:(RCTDevMenuConfiguration *)devMenuConfiguration
 {
-  [self initializeReactHostWithLaunchOptions:launchOptions devMenuConfiguration:devMenuConfiguration];
+  [self initializeReactHostWithLaunchOptions:launchOptions];
 
   RCTFabricSurface *surface = [self.reactHost createSurfaceWithModuleName:moduleName
                                                         initialProperties:initProps ? initProps : @{}];
@@ -245,21 +226,14 @@
 #pragma mark - New Arch Utilities
 
 - (void)createReactHostIfNeeded:(NSDictionary *)launchOptions
-           devMenuConfiguration:(RCTDevMenuConfiguration *)devMenuConfiguration
 {
   if (self.reactHost) {
     return;
   }
-  self.reactHost = [self createReactHost:launchOptions devMenuConfiguration:devMenuConfiguration];
+  self.reactHost = [self createReactHost:launchOptions];
 }
 
 - (RCTHost *)createReactHost:(NSDictionary *)launchOptions
-{
-  return [self createReactHost:launchOptions devMenuConfiguration:[RCTDevMenuConfiguration defaultConfiguration]];
-}
-
-- (RCTHost *)createReactHost:(NSDictionary *)launchOptions
-        devMenuConfiguration:(RCTDevMenuConfiguration *)devMenuConfiguration
 {
   __weak __typeof(self) weakSelf = self;
   RCTHost *reactHost =
@@ -269,8 +243,7 @@
                                 jsEngineProvider:^std::shared_ptr<facebook::react::JSRuntimeFactory>() {
                                   return [weakSelf createJSRuntimeFactory];
                                 }
-                                   launchOptions:launchOptions
-                            devMenuConfiguration:devMenuConfiguration];
+                                   launchOptions:launchOptions];
   [reactHost setBundleURLProvider:^NSURL *() {
     return [weakSelf bundleURL];
   }];

packages/react-native/Libraries/Blob/RCTFileReaderModule.mm

@@ -24,9 +24,11 @@ RCT_EXPORT_MODULE(FileReaderModule)
 
 @synthesize moduleRegistry = _moduleRegistry;
 
-RCT_EXPORT_METHOD(
-    readAsText : (NSDictionary<NSString *, id> *)blob encoding : (NSString *)encoding resolve : (RCTPromiseResolveBlock)
-        resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(readAsText
+                  : (NSDictionary<NSString *, id> *)blob encoding
+                  : (NSString *)encoding resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
   RCTBlobManager *blobManager = [_moduleRegistry moduleForName:"BlobModule"];
   dispatch_async(blobManager.methodQueue, ^{
@@ -54,9 +56,10 @@ RCT_EXPORT_METHOD(
   });
 }
 
-RCT_EXPORT_METHOD(
-    readAsDataURL : (NSDictionary<NSString *, id> *)blob resolve : (RCTPromiseResolveBlock)
-        resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(readAsDataURL
+                  : (NSDictionary<NSString *, id> *)blob resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
   RCTBlobManager *blobManager = [_moduleRegistry moduleForName:"BlobModule"];
   dispatch_async(blobManager.methodQueue, ^{

packages/react-native/Libraries/Components/AccessibilityInfo/AccessibilityInfo.js

@@ -99,7 +99,7 @@ const AccessibilityInfo = {
             reject,
           );
         } else {
-          reject(new Error('NativeAccessibilityManagerIOS is not available'));
+          reject(null);
         }
       });
     }
@@ -119,11 +119,7 @@ const AccessibilityInfo = {
         if (NativeAccessibilityInfoAndroid?.isGrayscaleEnabled != null) {
           NativeAccessibilityInfoAndroid.isGrayscaleEnabled(resolve);
         } else {
-          reject(
-            new Error(
-              'NativeAccessibilityInfoAndroid.isGrayscaleEnabled is not available',
-            ),
-          );
+          reject(null);
         }
       });
     } else {
@@ -134,7 +130,7 @@ const AccessibilityInfo = {
             reject,
           );
         } else {
-          reject(new Error('AccessibilityInfo native module is not available'));
+          reject(null);
         }
       });
     }
@@ -154,11 +150,7 @@ const AccessibilityInfo = {
         if (NativeAccessibilityInfoAndroid?.isInvertColorsEnabled != null) {
           NativeAccessibilityInfoAndroid.isInvertColorsEnabled(resolve);
         } else {
-          reject(
-            new Error(
-              'NativeAccessibilityInfoAndroid.isInvertColorsEnabled is not available',
-            ),
-          );
+          reject(null);
         }
       });
     } else {
@@ -169,7 +161,7 @@ const AccessibilityInfo = {
             reject,
           );
         } else {
-          reject(new Error('AccessibilityInfo native module is not available'));
+          reject(null);
         }
       });
     }
@@ -189,7 +181,7 @@ const AccessibilityInfo = {
         if (NativeAccessibilityInfoAndroid != null) {
           NativeAccessibilityInfoAndroid.isReduceMotionEnabled(resolve);
         } else {
-          reject(new Error('AccessibilityInfo native module is not available'));
+          reject(null);
         }
       } else {
         if (NativeAccessibilityManagerIOS != null) {
@@ -198,7 +190,7 @@ const AccessibilityInfo = {
             reject,
           );
         } else {
-          reject(new Error('NativeAccessibilityManagerIOS is not available'));
+          reject(null);
         }
       }
     });
@@ -216,11 +208,7 @@ const AccessibilityInfo = {
         if (NativeAccessibilityInfoAndroid?.isHighTextContrastEnabled != null) {
           NativeAccessibilityInfoAndroid.isHighTextContrastEnabled(resolve);
         } else {
-          reject(
-            new Error(
-              'NativeAccessibilityInfoAndroid.isHighTextContrastEnabled is not available',
-            ),
-          );
+          reject(null);
         }
       } else {
         return Promise.resolve(false);
@@ -248,11 +236,7 @@ const AccessibilityInfo = {
             reject,
           );
         } else {
-          reject(
-            new Error(
-              'NativeAccessibilityManagerIOS.getCurrentDarkerSystemColorsState is not available',
-            ),
-          );
+          reject(null);
         }
       }
     });
@@ -280,11 +264,7 @@ const AccessibilityInfo = {
             reject,
           );
         } else {
-          reject(
-            new Error(
-              'NativeAccessibilityManagerIOS.getCurrentPrefersCrossFadeTransitionsState is not available',
-            ),
-          );
+          reject(null);
         }
       }
     });
@@ -309,7 +289,7 @@ const AccessibilityInfo = {
             reject,
           );
         } else {
-          reject(new Error('NativeAccessibilityManagerIOS is not available'));
+          reject(null);
         }
       });
     }
@@ -329,7 +309,7 @@ const AccessibilityInfo = {
         if (NativeAccessibilityInfoAndroid != null) {
           NativeAccessibilityInfoAndroid.isTouchExplorationEnabled(resolve);
         } else {
-          reject(new Error('NativeAccessibilityInfoAndroid is not available'));
+          reject(null);
         }
       } else {
         if (NativeAccessibilityManagerIOS != null) {
@@ -338,7 +318,7 @@ const AccessibilityInfo = {
             reject,
           );
         } else {
-          reject(new Error('NativeAccessibilityManagerIOS is not available'));
+          reject(null);
         }
       }
     });
@@ -363,18 +343,10 @@ const AccessibilityInfo = {
         ) {
           NativeAccessibilityInfoAndroid.isAccessibilityServiceEnabled(resolve);
         } else {
-          reject(
-            new Error(
-              'NativeAccessibilityInfoAndroid.isAccessibilityServiceEnabled is not available',
-            ),
-          );
+          reject(null);
         }
       } else {
-        reject(
-          new Error(
-            'isAccessibilityServiceEnabled is only available on Android',
-          ),
-        );
+        reject(null);
       }
     });
   },

packages/react-native/Libraries/Components/ActivityIndicator/ActivityIndicator.d.ts

@@ -9,7 +9,7 @@
 
 import type * as React from 'react';
 import {Constructor} from '../../../types/private/Utilities';
-import {HostInstance} from '../../../types/public/ReactNativeTypes';
+import {NativeMethods} from '../../../types/public/ReactNativeTypes';
 import {ColorValue, StyleProp} from '../../StyleSheet/StyleSheet';
 import {ViewStyle} from '../../StyleSheet/StyleSheetTypes';
 import {LayoutChangeEvent} from '../../Types/CoreEventTypes';
@@ -46,7 +46,7 @@ export interface ActivityIndicatorProps extends ViewProps {
 }
 
 declare class ActivityIndicatorComponent extends React.Component<ActivityIndicatorProps> {}
-declare const ActivityIndicatorBase: Constructor<HostInstance> &
+declare const ActivityIndicatorBase: Constructor<NativeMethods> &
   typeof ActivityIndicatorComponent;
 export class ActivityIndicator extends ActivityIndicatorBase {}
 

packages/react-native/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.d.ts

@@ -9,7 +9,7 @@
 
 import type * as React from 'react';
 import {Constructor} from '../../../types/private/Utilities';
-import {HostInstance} from '../../../types/public/ReactNativeTypes';
+import {NativeMethods} from '../../../types/public/ReactNativeTypes';
 import {ColorValue} from '../../StyleSheet/StyleSheet';
 import {
   NativeSyntheticEvent,
@@ -121,7 +121,7 @@ interface DrawerPosition {
 }
 
 declare class DrawerLayoutAndroidComponent extends React.Component<DrawerLayoutAndroidProps> {}
-declare const DrawerLayoutAndroidBase: Constructor<HostInstance> &
+declare const DrawerLayoutAndroidBase: Constructor<NativeMethods> &
   typeof DrawerLayoutAndroidComponent;
 export class DrawerLayoutAndroid extends DrawerLayoutAndroidBase {
   /**

packages/react-native/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.d.ts

@@ -9,7 +9,7 @@
 
 import type * as React from 'react';
 import {Constructor} from '../../../types/private/Utilities';
-import {HostInstance} from '../../../types/public/ReactNativeTypes';
+import {NativeMethods} from '../../../types/public/ReactNativeTypes';
 import {ColorValue} from '../../StyleSheet/StyleSheet';
 import {ViewProps} from '../View/ViewPropTypes';
 
@@ -72,7 +72,7 @@ export interface ProgressBarAndroidProps extends ViewProps {
  * that the app is loading or there is some activity in the app.
  */
 declare class ProgressBarAndroidComponent extends React.Component<ProgressBarAndroidProps> {}
-declare const ProgressBarAndroidBase: Constructor<HostInstance> &
+declare const ProgressBarAndroidBase: Constructor<NativeMethods> &
   typeof ProgressBarAndroidComponent;
 /**
  * ProgressBarAndroid has been extracted from react-native core and will be removed in a future release.

packages/react-native/Libraries/Components/RefreshControl/RefreshControl.d.ts

@@ -9,7 +9,7 @@
 
 import type * as React from 'react';
 import {Constructor} from '../../../types/private/Utilities';
-import {HostInstance} from '../../../types/public/ReactNativeTypes';
+import {NativeMethods} from '../../../types/public/ReactNativeTypes';
 import {ColorValue} from '../../StyleSheet/StyleSheet';
 import {ViewProps} from '../View/ViewPropTypes';
 
@@ -80,7 +80,7 @@ export interface RefreshControlProps
  * in the `onRefresh` function otherwise the refresh indicator will stop immediately.
  */
 declare class RefreshControlComponent extends React.Component<RefreshControlProps> {}
-declare const RefreshControlBase: Constructor<HostInstance> &
+declare const RefreshControlBase: Constructor<NativeMethods> &
   typeof RefreshControlComponent;
 export class RefreshControl extends RefreshControlBase {
   static SIZE: Object; // Undocumented

packages/react-native/Libraries/Components/SafeAreaView/SafeAreaView.d.ts

@@ -9,7 +9,7 @@
 
 import type * as React from 'react';
 import {Constructor} from '../../../types/private/Utilities';
-import {HostInstance} from '../../../types/public/ReactNativeTypes';
+import {NativeMethods} from '../../../types/public/ReactNativeTypes';
 import {ViewProps} from '../View/ViewPropTypes';
 
 /**
@@ -23,7 +23,7 @@ import {ViewProps} from '../View/ViewPropTypes';
  */
 declare class SafeAreaViewComponent extends React.Component<ViewProps> {}
 
-declare const SafeAreaViewBase: Constructor<HostInstance> &
+declare const SafeAreaViewBase: Constructor<NativeMethods> &
   typeof SafeAreaViewComponent;
 
 /**

packages/react-native/Libraries/Components/ScrollView/__tests__/ScrollView-itest.js

@@ -12,10 +12,12 @@ import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';
 
 import type {HostInstance} from 'react-native';
 
+import ensureInstance from '../../../../src/private/__tests__/utilities/ensureInstance';
 import * as Fantom from '@react-native/fantom';
 import * as React from 'react';
 import {createRef} from 'react';
 import {ScrollView} from 'react-native';
+import ReactNativeElement from 'react-native/src/private/webapis/dom/nodes/ReactNativeElement';
 
 describe('onScroll', () => {
   it('delivers onScroll event', () => {
@@ -34,9 +36,11 @@ describe('onScroll', () => {
       );
     });
 
+    const element = ensureInstance(scrollViewRef.current, ReactNativeElement);
+
     Fantom.runOnUIThread(() => {
       Fantom.enqueueNativeEvent(
-        scrollViewRef,
+        element,
         'scroll',
         {
           contentOffset: {
@@ -76,9 +80,11 @@ describe('onScroll', () => {
       );
     });
 
+    const element = ensureInstance(scrollViewRef.current, ReactNativeElement);
+
     Fantom.runOnUIThread(() => {
       Fantom.enqueueNativeEvent(
-        scrollViewRef,
+        element,
         'scroll',
         {
           contentOffset: {
@@ -91,7 +97,7 @@ describe('onScroll', () => {
         },
       );
       Fantom.enqueueNativeEvent(
-        scrollViewRef,
+        element,
         'scroll',
         {
           contentOffset: {

packages/react-native/Libraries/Components/ScrollView/__tests__/ScrollView-viewCulling-itest.js

@@ -13,11 +13,13 @@ import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';
 
 import type {HostInstance} from 'react-native';
 
+import ensureInstance from '../../../../src/private/__tests__/utilities/ensureInstance';
 import * as Fantom from '@react-native/fantom';
 import nullthrows from 'nullthrows';
 import * as React from 'react';
 import {createRef, useState} from 'react';
 import {FlatList, Modal, ScrollView, View} from 'react-native';
+import ReactNativeElement from 'react-native/src/private/webapis/dom/nodes/ReactNativeElement';
 
 test('basic culling', () => {
   const root = Fantom.createRoot({viewportWidth: 100, viewportHeight: 100});
@@ -44,7 +46,9 @@ test('basic culling', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+  Fantom.scrollTo(element, {
     x: 0,
     y: 60,
   });
@@ -57,7 +61,7 @@ test('basic culling', () => {
     'Update {type: "ScrollView", nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 0,
   });
@@ -114,8 +118,10 @@ test('recursive culling', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
   // === Scroll down to the edge of child AA ===
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 30,
   });
@@ -126,7 +132,7 @@ test('recursive culling', () => {
 
   // === Scroll down past child AA ===
 
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 36,
   });
@@ -138,7 +144,7 @@ test('recursive culling', () => {
   ]);
 
   // === Scroll down past child AB ===
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 51,
   });
@@ -150,7 +156,7 @@ test('recursive culling', () => {
   ]);
 
   // === Scroll down past element A ===
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 56,
   });
@@ -162,7 +168,7 @@ test('recursive culling', () => {
   ]);
 
   // Scroll element B into viewport. Just child BA should be created.
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 155,
   });
@@ -176,7 +182,7 @@ test('recursive culling', () => {
   ]);
 
   // Scroll child BA into viewport.
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 165,
   });
@@ -188,7 +194,7 @@ test('recursive culling', () => {
   ]);
 
   // Scroll back to start
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 0,
   });
@@ -210,7 +216,7 @@ test('recursive culling', () => {
   ]);
 
   // Scroll past element A
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 85,
   });
@@ -259,7 +265,9 @@ test('recursive culling when initial offset is negative', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+  Fantom.scrollTo(element, {
     x: 0,
     y: 0,
   });
@@ -320,7 +328,9 @@ test('deep nesting', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+  Fantom.scrollTo(element, {
     x: 0,
     y: 40,
   });
@@ -335,7 +345,7 @@ test('deep nesting', () => {
     'Insert {type: "View", parentNativeID: (N/A), index: 1, nativeID: "element B"}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  Fantom.scrollTo(element, {
     x: 0,
     y: 150,
   });
@@ -479,7 +489,9 @@ test('initial render', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+  Fantom.scrollTo(element, {
     x: 0,
     y: 100,
   });
@@ -549,7 +561,9 @@ test('basic culling smaller ScrollView', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+  Fantom.scrollTo(element, {
     x: 0,
     y: 11,
   });
@@ -610,7 +624,9 @@ test('culling with transform move', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+  Fantom.scrollTo(element, {
     x: 0,
     y: 1,
   });
@@ -653,7 +669,9 @@ test('culling with recursive transform move', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+  Fantom.scrollTo(element, {
     x: 0,
     y: 1,
   });
@@ -695,7 +713,9 @@ test('culling with transform scale', () => {
     'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
   ]);
 
-  Fantom.scrollTo(nodeRef, {
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+  Fantom.scrollTo(element, {
     x: 0,
     y: 121,
   });
@@ -754,8 +774,10 @@ test('culling inside of Modal', () => {
     );
   });
 
+  const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
   Fantom.runOnUIThread(() => {
-    Fantom.enqueueModalSizeUpdate(nodeRef, {
+    Fantom.enqueueModalSizeUpdate(element, {
       width: 100,
       height: 100,
     });
@@ -878,7 +900,9 @@ describe('reparenting', () => {
       'Insert {type: "ScrollView", parentNativeID: (root), index: 0, nativeID: (N/A)}',
     ]);
 
-    Fantom.scrollTo(nodeRef, {
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+    Fantom.scrollTo(element, {
       x: 0,
       y: 60,
     });
@@ -1554,8 +1578,10 @@ describe('reparenting', () => {
       'Insert {type: "View", parentNativeID: (N/A), index: 0, nativeID: "child"}',
     ]);
 
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
     // Scroll down to see the grandchild.
-    Fantom.scrollTo(nodeRef, {
+    Fantom.scrollTo(element, {
       x: 0,
       y: 115,
     });
@@ -1643,8 +1669,10 @@ describe('reparenting', () => {
       'Insert {type: "View", parentNativeID: (N/A), index: 0, nativeID: "child"}',
     ]);
 
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
     // Scroll down to see the grandchild.
-    Fantom.scrollTo(nodeRef, {
+    Fantom.scrollTo(element, {
       x: 0,
       y: 118,
     });
@@ -1883,8 +1911,10 @@ describe('reparenting', () => {
       'Insert {type: "View", parentNativeID: (N/A), index: 0, nativeID: (N/A)}',
     ]);
 
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
     // Scroll to reveal grandchild.
-    Fantom.scrollTo(nodeRef, {
+    Fantom.scrollTo(element, {
       x: 0,
       y: 70,
     });
@@ -1971,8 +2001,10 @@ describe('reparenting', () => {
       'Insert {type: "View", parentNativeID: (N/A), index: 0, nativeID: (N/A)}',
     ]);
 
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
     // Scroll to reveal grandchild.
-    Fantom.scrollTo(nodeRef, {
+    Fantom.scrollTo(element, {
       x: 0,
       y: 70,
     });
@@ -2182,7 +2214,9 @@ describe('reparenting', () => {
       'Insert {type: "View", parentNativeID: "unflattened", index: 0, nativeID: "child"}',
     ]);
 
-    Fantom.scrollTo(nodeRef, {
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+    Fantom.scrollTo(element, {
       x: 0,
       y: 50,
     });
@@ -2278,7 +2312,9 @@ describe('reparenting', () => {
       'Insert {type: "View", parentNativeID: "unflattened", index: 0, nativeID: "child"}',
     ]);
 
-    Fantom.scrollTo(nodeRef, {
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
+    Fantom.scrollTo(element, {
       x: 0,
       y: 50,
     });
@@ -2427,9 +2463,10 @@ describe('opt out mechanism - Unstable_uncullableView & Unstable_uncullableTrace
         </ScrollView>,
       );
     });
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
 
     Fantom.runOnUIThread(() => {
-      Fantom.enqueueModalSizeUpdate(nodeRef, {
+      Fantom.enqueueModalSizeUpdate(element, {
         width: 100,
         height: 100,
       });
@@ -2480,8 +2517,10 @@ describe('opt out mechanism - Unstable_uncullableView & Unstable_uncullableTrace
       );
     });
 
+    const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
     Fantom.runOnUIThread(() => {
-      Fantom.enqueueModalSizeUpdate(nodeRef, {
+      Fantom.enqueueModalSizeUpdate(element, {
         width: 100,
         height: 100,
       });

packages/react-native/Libraries/Components/Switch/Switch.d.ts

@@ -9,7 +9,7 @@
 
 import type * as React from 'react';
 import {Constructor} from '../../../types/private/Utilities';
-import {HostInstance} from '../../../types/public/ReactNativeTypes';
+import {NativeMethods} from '../../../types/public/ReactNativeTypes';
 import {ColorValue, StyleProp} from '../../StyleSheet/StyleSheet';
 import {ViewStyle} from '../../StyleSheet/StyleSheetTypes';
 import {ViewProps} from '../View/ViewPropTypes';
@@ -114,5 +114,5 @@ export interface SwitchProps extends SwitchPropsIOS {
  * the supplied `value` prop instead of the expected result of any user actions.
  */
 declare class SwitchComponent extends React.Component<SwitchProps> {}
-declare const SwitchBase: Constructor<HostInstance> & typeof SwitchComponent;
+declare const SwitchBase: Constructor<NativeMethods> & typeof SwitchComponent;
 export class Switch extends SwitchBase {}