xplat/js/react-native-github/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/tasks/internal/PreparePrefabHeadersTaskTest.kt

Reviewed By: ianlevesque Differential Revision: D84801340
2025-11-01 09:14:26 +00:00 · 2025-10-16 05:27:33 -07:00
1096 changed files with 17783 additions and 23512 deletions
@@ -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',
      },
    },
    {
@@ -98,4 +98,4 @@ untyped-import
 untyped-type-import

 [version]
-^0.289.0
+^0.288.0
@@ -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 }}
@@ -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
@@ -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 }}-${{ inputs.react-native-version }}
+        enableCrossOsArchive: true
@@ -0,0 +1,53 @@
+name: build-hermesc-linux
+description: This action builds hermesc for linux platforms
+inputs:
+  hermes-version:
+    required: True
+    description: The version of Hermes
+  react-native-version:
+    required: True
+    description: The version of React Native
+runs:
+  using: composite
+  steps:
+    - name: Install dependencies
+      shell: bash
+      run: |
+        sudo apt update
+        sudo apt install -y git openssh-client build-essential \
+            libreadline-dev libicu-dev jq zip python3
+
+        # Install cmake 3.28.3-1build7
+        sudo apt-get install cmake=3.28.3-1build7
+        sudo ln -sf /usr/bin/cmake /usr/local/bin/cmake
+    - name: Restore Hermes workspace
+      uses: ./.github/actions/restore-hermes-workspace
+    - name: Linux cache
+      uses: actions/cache@v4
+      with:
+        key: v1-hermes-${{ 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
@@ -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\
@@ -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:
@@ -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
@@ -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/.
@@ -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" || "${{ inputs.platform }}" == "tvos-simulator" ]]; then
-          sudo xcodebuild -downloadPlatform tvOS
-        else
-          sudo xcodebuild -downloadPlatform iOS
-        fi
-
-        sudo xcodebuild -runFirstLaunch
@@ -10,27 +10,36 @@ inputs:
  flavor:
    description: The flavor of the build. Must be one of "Debug", "Release".
    default: Debug
+  hermes-version:
+    description: The version of hermes
+    required: true
+  react-native-version:
+    description: The version of react-native
+    required: true
 runs:
  using: composite
  steps:
    - name: Setup xcode
      uses: ./.github/actions/setup-xcode
-      with:
-        platform: ios
    - name: Setup node.js
      uses: ./.github/actions/setup-node
    - name: Run yarn install
      uses: ./.github/actions/yarn-install
+    - name: Create Hermes folder
+      shell: bash
+      run: mkdir -p "$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"

@@ -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: |
@@ -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).
@@ -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,
@@ -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();
@@ -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 }}";
@@ -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
@@ -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 }}
@@ -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
@@ -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') }}
@@ -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 }}
@@ -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
@@ -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
@@ -1,17 +1,5 @@
 # Changelog

-## v0.82.1
-
-### 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))
-
-#### 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))
-
 ## v0.82.0

 ### Breaking
@@ -824,10 +812,6 @@
 - **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)
@@ -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") {
@@ -131,7 +135,8 @@ if (project.findProperty("react.internal.useHermesNightly")?.toString()?.toBoole
    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")
      }
    }
@@ -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": "^0.288.0",
    "glob": "^7.1.1",
    "hermes-eslint": "0.32.0",
    "hermes-transform": "0.32.0",
@@ -120,6 +120,7 @@
    "ws": "^7.5.10"
  },
  "resolutions": {
+    "eslint-plugin-react-hooks": "6.1.0-canary-12bc60f5-20250613",
    "react-is": "19.2.0",
    "on-headers": "1.1.0",
    "compression": "1.8.1"
@@ -1,5 +1,5 @@
-@generated SignedSource<<4bb67766e15e25a481c4c38873260a7a>>
-Git revision: 7aa57d13e50ce9d74a91c9315c9b0ded00fbc19f
+@generated SignedSource<<ec85a720cb9603510d40915ba1410b50>>
+Git revision: 54afd8765db32a9640edef3788085b991fe4b88a
 Built with --nohooks: false
 Is local checkout: false
 Remote URL: https://github.com/facebook/react-native-devtools-frontend
@@ -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};
@@ -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};
@@ -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": {
@@ -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)
@@ -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("${bundleFile}.hbc")
      val outputSourceMap = resolveOutputSourceMap(bundleAssetFilename)
      val compilerSourceMap = resolveCompilerSourceMap(bundleAssetFilename)
@@ -44,8 +44,12 @@ internal object AgpConfiguratorUtils {
                  maybeCreate("debugOptimized").apply {
                    manifestPlaceholders["usesCleartextTraffic"] = "true"
                    initWith(debug)
-                    matchingFallbacks += listOf("release")
-                    externalNativeBuild { cmake { arguments("-DCMAKE_BUILD_TYPE=Release") } }
+                    externalNativeBuild {
+                      cmake {
+                        arguments("-DCMAKE_BUILD_TYPE=Release")
+                        matchingFallbacks += listOf("release")
+                      }
+                    }
                  }
                }
              }
@@ -14,7 +14,6 @@ import com.facebook.react.utils.PropertyUtils.INCLUDE_JITPACK_REPOSITORY
 import com.facebook.react.utils.PropertyUtils.INCLUDE_JITPACK_REPOSITORY_DEFAULT
 import com.facebook.react.utils.PropertyUtils.INTERNAL_HERMES_PUBLISHING_GROUP
 import com.facebook.react.utils.PropertyUtils.INTERNAL_HERMES_V1_VERSION_NAME
-import com.facebook.react.utils.PropertyUtils.INTERNAL_HERMES_VERSION_NAME
 import com.facebook.react.utils.PropertyUtils.INTERNAL_REACT_NATIVE_MAVEN_LOCAL_REPO
 import com.facebook.react.utils.PropertyUtils.INTERNAL_REACT_PUBLISHING_GROUP
 import com.facebook.react.utils.PropertyUtils.INTERNAL_USE_HERMES_NIGHTLY
@@ -140,7 +139,11 @@ internal object DependencyUtils {
          // Contributors only: The hermes-engine version is forced only if the user has
          // not opted into using nightlies for local development.
          configuration.resolutionStrategy.force(
-              "${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()

@@ -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/"
@@ -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"
 }
@@ -34,9 +34,9 @@ class PreparePrefabHeadersTaskTest {

    val project = createProject(projectDir = tempFolder.root)
    val task =
-        createTestTask<PreparePrefabHeadersTask>(project = project) {
-          it.outputDir.set(outputDir)
-          it.input.set(listOf(PrefabPreprocessingEntry("sample_library", "input/" to "")))
+        createTestTask<PreparePrefabHeadersTask>(project = project) { prefabTask ->
+          prefabTask.outputDir.set(outputDir)
+          prefabTask.input.set(listOf(PrefabPreprocessingEntry("sample_library", "input/" to "")))
        }

    task.taskAction()
@@ -52,9 +52,9 @@ class PreparePrefabHeadersTaskTest {

    val project = createProject(projectDir = tempFolder.root)
    val task =
-        createTestTask<PreparePrefabHeadersTask>(project = project) {
-          it.outputDir.set(outputDir)
-          it.input.set(
+        createTestTask<PreparePrefabHeadersTask>(project = project) { headerTask ->
+          headerTask.outputDir.set(outputDir)
+          headerTask.input.set(
              listOf(PrefabPreprocessingEntry("sample_library", "input/" to expectedPrefix))
          )
        }
@@ -74,9 +74,9 @@ class PreparePrefabHeadersTaskTest {

    val project = createProject(projectDir = tempFolder.root)
    val task =
-        createTestTask<PreparePrefabHeadersTask>(project = project) {
-          it.outputDir.set(outputDir)
-          it.input.set(
+        createTestTask<PreparePrefabHeadersTask>(project = project) { ignoreFilesTask ->
+          ignoreFilesTask.outputDir.set(outputDir)
+          ignoreFilesTask.input.set(
              listOf(PrefabPreprocessingEntry("sample_library", "input/" to expectedPrefix))
          )
        }
@@ -96,9 +96,9 @@ class PreparePrefabHeadersTaskTest {

    val project = createProject(projectDir = tempFolder.root)
    val task =
-        createTestTask<PreparePrefabHeadersTask>(project = project) {
-          it.outputDir.set(outputDir)
-          it.input.set(
+        createTestTask<PreparePrefabHeadersTask>(project = project) { multiPathTask ->
+          multiPathTask.outputDir.set(outputDir)
+          multiPathTask.input.set(
              listOf(
                  PrefabPreprocessingEntry(
                      "sample_library",
@@ -122,9 +122,9 @@ class PreparePrefabHeadersTaskTest {

    val project = createProject(projectDir = tempFolder.root)
    val task =
-        createTestTask<PreparePrefabHeadersTask>(project = project) {
-          it.outputDir.set(outputDir)
-          it.input.set(
+        createTestTask<PreparePrefabHeadersTask>(project = project) { multiEntryTask ->
+          multiEntryTask.outputDir.set(outputDir)
+          multiEntryTask.input.set(
              listOf(
                  PrefabPreprocessingEntry("libraryone", "input/lib1/" to ""),
                  PrefabPreprocessingEntry("librarytwo", "input/lib2/" to ""),
@@ -147,9 +147,9 @@ class PreparePrefabHeadersTaskTest {

    val project = createProject(projectDir = tempFolder.root)
    val task =
-        createTestTask<PreparePrefabHeadersTask>(project = project) {
-          it.outputDir.set(outputDir)
-          it.input.set(
+        createTestTask<PreparePrefabHeadersTask>(project = project) { sharedHeaderTask ->
+          sharedHeaderTask.outputDir.set(outputDir)
+          sharedHeaderTask.input.set(
              listOf(
                  PrefabPreprocessingEntry(
                      "libraryone",
@@ -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
              """
@@ -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)
@@ -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>
  );
 }
@@ -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();
  });

@@ -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, ^{
@@ -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);
      }
    });
  },
@@ -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 {}

@@ -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 {
  /**
@@ -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.
@@ -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
@@ -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;

 /**
@@ -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: {
@@ -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,
      });
@@ -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 {}
@@ -10,7 +10,10 @@
 import type * as React from 'react';
 import {Constructor} from '../../../types/private/Utilities';
 import {TimerMixin} from '../../../types/private/TimerMixin';
-import {HostInstance} from '../../../types/public/ReactNativeTypes';
+import {
+  HostInstance,
+  NativeMethods,
+} from '../../../types/public/ReactNativeTypes';
 import {ColorValue, StyleProp} from '../../StyleSheet/StyleSheet';
 import {TextStyle} from '../../StyleSheet/StyleSheetTypes';
 import {
@@ -1026,7 +1029,7 @@ interface TextInputState {
 * @see https://reactnative.dev/docs/textinput#methods
 */
 declare class TextInputComponent extends React.Component<TextInputProps> {}
-declare const TextInputBase: Constructor<HostInstance> &
+declare const TextInputBase: Constructor<NativeMethods> &
  Constructor<TimerMixin> &
  typeof TextInputComponent;
 export class TextInput extends TextInputBase {
@@ -12,6 +12,7 @@ import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';

 import type {TextInputInstance} from '../TextInput.flow';

+import ensureInstance from '../../../../src/private/__tests__/utilities/ensureInstance';
 import * as Fantom from '@react-native/fantom';
 import nullthrows from 'nullthrows';
 import * as React from 'react';
@@ -59,8 +60,10 @@ describe('<TextInput>', () => {
          );
        });

+        const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
        Fantom.runOnUIThread(() => {
-          Fantom.enqueueNativeEvent(nodeRef, 'change', {
+          Fantom.enqueueNativeEvent(element, 'change', {
            text: 'Hello World',
          });
        });
@@ -83,8 +86,10 @@ describe('<TextInput>', () => {
          root.render(<TextInput onChangeText={onChangeText} ref={nodeRef} />);
        });

+        const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
        Fantom.runOnUIThread(() => {
-          Fantom.enqueueNativeEvent(nodeRef, 'change', {
+          Fantom.enqueueNativeEvent(element, 'change', {
            text: 'Hello World',
          });
        });
@@ -108,10 +113,12 @@ describe('<TextInput>', () => {
          root.render(<TextInput onFocus={focusEvent} ref={nodeRef} />);
        });

+        const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
        expect(focusEvent).toHaveBeenCalledTimes(0);

        Fantom.runOnUIThread(() => {
-          Fantom.enqueueNativeEvent(nodeRef, 'focus');
+          Fantom.enqueueNativeEvent(element, 'focus');
        });

        // The tasks have not run.
@@ -134,10 +141,12 @@ describe('<TextInput>', () => {
          root.render(<TextInput onBlur={blurEvent} ref={nodeRef} />);
        });

+        const element = ensureInstance(nodeRef.current, ReactNativeElement);
+
        expect(blurEvent).toHaveBeenCalledTimes(0);

        Fantom.runOnUIThread(() => {
-          Fantom.enqueueNativeEvent(nodeRef, 'blur');
+          Fantom.enqueueNativeEvent(element, 'blur');
        });

        // The tasks have not run.
@@ -13,9 +13,6 @@ import type {AnyAttributeType} from '../../Renderer/shims/ReactNativeTypes';
 import * as ReactNativeFeatureFlags from '../../../src/private/featureflags/ReactNativeFeatureFlags';
 import processAspectRatio from '../../StyleSheet/processAspectRatio';
 import processBackgroundImage from '../../StyleSheet/processBackgroundImage';
-import processBackgroundPosition from '../../StyleSheet/processBackgroundPosition';
-import processBackgroundRepeat from '../../StyleSheet/processBackgroundRepeat';
-import processBackgroundSize from '../../StyleSheet/processBackgroundSize';
 import processBoxShadow from '../../StyleSheet/processBoxShadow';
 import processColor from '../../StyleSheet/processColor';
 import processFilter from '../../StyleSheet/processFilter';
@@ -147,25 +144,10 @@ const ReactNativeStyleAttributes: {[string]: AnyAttributeType, ...} = {
    : {process: processBoxShadow},

  /**
-   * BackgroundImage
+   * Linear Gradient
   */
  experimental_backgroundImage: {process: processBackgroundImage},

-  /**
-   * BackgroundSize
-   */
-  experimental_backgroundSize: {process: processBackgroundSize},
-
-  /**
-   * BackgroundPosition
-   */
-  experimental_backgroundPosition: {process: processBackgroundPosition},
-
-  /**
-   * BackgroundRepeat
-   */
-  experimental_backgroundRepeat: {process: processBackgroundRepeat},
-
  /**
   * View
   */
@@ -10,7 +10,7 @@
 import type * as React from 'react';
 import {Constructor} from '../../../types/private/Utilities';
 import {ViewProps} from './ViewPropTypes';
-import {HostInstance} from '../../../types/public/ReactNativeTypes';
+import {NativeMethods} from '../../../types/public/ReactNativeTypes';

 /**
 * The most fundamental component for building UI, View is a container that supports layout with flexbox, style, some touch handling,
@@ -19,7 +19,7 @@ import {HostInstance} from '../../../types/public/ReactNativeTypes';
 * whether that is a UIView, <div>, android.view, etc.
 */
 declare class ViewComponent extends React.Component<ViewProps> {}
-declare const ViewBase: Constructor<HostInstance> & typeof ViewComponent;
+declare const ViewBase: Constructor<NativeMethods> & typeof ViewComponent;
 export class View extends ViewBase {
  /**
   * Is 3D Touch / Force Touch available (i.e. will touch events include `force`)
@@ -5,7 +5,6 @@
 * LICENSE file in the root directory of this source tree.
 *
 * @flow strict-local
- * @fantom_flags enableNativeCSSParsing:*
 * @format
 */

@@ -230,56 +229,6 @@ describe('<View>', () => {
          });
        });
      });
-
-      describe('background-image', () => {
-        it('it parses CSS and object syntax', () => {
-          const root = Fantom.createRoot();
-
-          Fantom.runTask(() => {
-            root.render(
-              <>
-                <View
-                  style={{
-                    experimental_backgroundImage:
-                      'radial-gradient(#e66465, #9198e5)',
-                  }}
-                />
-                <View
-                  style={{
-                    experimental_backgroundImage: [
-                      {
-                        type: 'radial-gradient',
-                        shape: 'ellipse',
-                        position: {top: '50%', right: '50%'},
-                        size: 'farthest-corner',
-                        colorStops: [{color: '#e66465'}, {color: '#9198e5'}],
-                      },
-                    ],
-                  }}
-                />
-              </>,
-            );
-          });
-
-          const expectedProps = {
-            backgroundImage:
-              '[radial-gradient(ellipse farthest-corner at 50% 50% , rgba(230, 100, 101, 1), rgba(145, 152, 229, 1))]',
-          };
-
-          expect(root.getRenderedOutput().toJSON()).toEqual([
-            {
-              children: [],
-              props: expectedProps,
-              type: 'View',
-            },
-            {
-              children: [],
-              props: expectedProps,
-              type: 'View',
-            },
-          ]);
-        });
-      });
    });

    describe('pointerEvents', () => {
@@ -20,9 +20,7 @@ if (NativePerformance) {
    // $FlowExpectedError[cannot-write]
    global.performance = {
      mark: () => {},
-      clearMarks: () => {},
      measure: () => {},
-      clearMeasures: () => {},
      now: () => {
        const performanceNow = global.nativePerformanceNow || Date.now;
        return performanceNow();
@@ -332,9 +332,7 @@ class DebuggingOverlayRegistry {
        instance.measure((x, y, width, height, left, top) => {
          // measure can execute callback without any values provided to signal error.
          if (left == null || top == null || width == null || height == null) {
-            reject(
-              new Error('Unexpectedly failed to call measure on an instance.'),
-            );
+            reject('Unexpectedly failed to call measure on an instance.');
          }

          resolve({
@@ -482,11 +480,7 @@ class DebuggingOverlayRegistry {
                width == null ||
                height == null
              ) {
-                reject(
-                  new Error(
-                    'Unexpectedly failed to call measure on an instance.',
-                  ),
-                );
+                reject('Unexpectedly failed to call measure on an instance.');
              }

              resolve({x: left, y: top, width, height});
@@ -30,11 +30,8 @@ class RCTDeviceEventEmitterImpl extends EventEmitter<RCTDeviceEventDefinitions>
    ...args: RCTDeviceEventDefinitions[TEvent]
  ): void {
    beginEvent(() => `RCTDeviceEventEmitter.emit#${eventType}`);
-    try {
-      super.emit(eventType, ...args);
-    } finally {
-      endEvent();
-    }
+    super.emit(eventType, ...args);
+    endEvent();
  }
 }
 const RCTDeviceEventEmitter: IEventEmitter<RCTDeviceEventDefinitions> =
@@ -26,81 +26,68 @@ class LazyIterator {
 public:
  LazyIterator() = default;

-  LazyIterator(U vector, convert_type convert, size_type i) : _v(vector), _i(i), _convert(std::move(convert)) {}
+  LazyIterator(U vector, convert_type convert, size_type i)
+      : _v(vector), _i(i), _convert(std::move(convert)) {}

-  bool operator==(const LazyIterator &other) const
-  {
+  bool operator==(const LazyIterator& other) const {
    return _i == other._i && _v == other._v;
  }

-  bool operator<(const LazyIterator &b) const
-  {
+  bool operator<(const LazyIterator& b) const {
    return _i < b._i;
  }

-  value_type operator*() const
-  {
+  value_type operator*() const {
    return _convert(_v[_i]);
  }

-  std::unique_ptr<value_type> operator->() const
-  {
+  std::unique_ptr<value_type> operator->() const {
    return std::make_unique<value_type>(*this);
  }

-  LazyIterator operator+(difference_type n) const
-  {
+  LazyIterator operator+(difference_type n) const {
    return LazyIterator(_v, _convert, _i + n);
  }

-  LazyIterator &operator+=(difference_type n)
-  {
+  LazyIterator& operator+=(difference_type n) {
    _i += n;
    return *this;
  }

-  LazyIterator &operator-=(difference_type n)
-  {
+  LazyIterator& operator-=(difference_type n) {
    _i -= n;
    return *this;
  }

-  LazyIterator operator-(difference_type n) const
-  {
+  LazyIterator operator-(difference_type n) const {
    return LazyIterator(_v, _i - n);
  }

-  difference_type operator-(const LazyIterator &a) const
-  {
+  difference_type operator-(const LazyIterator& a) const {
    return _i - a._i;
  }

-  LazyIterator &operator++()
-  {
+  LazyIterator& operator++() {
    return *this += 1;
  }

-  LazyIterator operator++(int)
-  {
+  LazyIterator operator++(int) {
    auto tmp = *this;
    ++*this;
    return tmp;
  }

-  LazyIterator &operator--()
-  {
+  LazyIterator& operator--() {
    return *this -= 1;
  }

-  LazyIterator operator--(int)
-  {
+  LazyIterator operator--(int) {
    auto tmp = *this;
    --*this;
    return tmp;
  }

-  value_type operator[](difference_type n) const
-  {
+  value_type operator[](difference_type n) const {
    return _convert(_v[_i + n]);
  }

@@ -111,32 +98,29 @@ class LazyIterator {
 };

 template <typename T, typename U>
-LazyIterator<T, U> operator+(typename LazyIterator<T, U>::difference_type n, const LazyIterator<T, U> &i)
-{
+LazyIterator<T, U> operator+(
+    typename LazyIterator<T, U>::difference_type n,
+    const LazyIterator<T, U>& i) {
  return i + n;
 }

 template <typename T, typename U>
-bool operator!=(const LazyIterator<T, U> &a, const LazyIterator<T, U> &b)
-{
+bool operator!=(const LazyIterator<T, U>& a, const LazyIterator<T, U>& b) {
  return !(a == b);
 }

 template <typename T, typename U>
-bool operator<=(const LazyIterator<T, U> &a, const LazyIterator<T, U> &b)
-{
+bool operator<=(const LazyIterator<T, U>& a, const LazyIterator<T, U>& b) {
  return a < b || a == b;
 }

 template <typename T, typename U>
-bool operator>(const LazyIterator<T, U> &a, const LazyIterator<T, U> &b)
-{
+bool operator>(const LazyIterator<T, U>& a, const LazyIterator<T, U>& b) {
  return b < a;
 }

 template <typename T, typename U>
-bool operator>=(const LazyIterator<T, U> &a, const LazyIterator<T, U> &b)
-{
+bool operator>=(const LazyIterator<T, U>& a, const LazyIterator<T, U>& b) {
  return a > b || a == b;
 }

@@ -31,28 +31,24 @@ class LazyVector {
  using size_type = std::int32_t;
  using convert_type = std::function<T(U)>;

-  static LazyVector<T, U> fromUnsafeRawValue(U v, size_type size, convert_type convert)
-  {
+  static LazyVector<T, U>
+  fromUnsafeRawValue(U v, size_type size, convert_type convert) {
    return {v, size, convert};
  }

-  U unsafeRawValue() const
-  {
+  U unsafeRawValue() const {
    return _v;
  }

-  bool empty() const
-  {
+  bool empty() const {
    return _size == 0;
  }

-  size_type size() const
-  {
+  size_type size() const {
    return _size;
  }

-  const_reference at(size_type pos) const
-  {
+  const_reference at(size_type pos) const {
 #ifndef _LIBCPP_NO_EXCEPTIONS
    if (!(pos < _size)) {
      throw std::out_of_range("out of range");
@@ -63,47 +59,41 @@ class LazyVector {
    return _convert(_v[pos]);
  }

-  const_reference operator[](size_type pos) const
-  {
+  const_reference operator[](size_type pos) const {
    assert(pos < _size);
    return _convert(_v[pos]);
  }

-  const_reference front() const
-  {
+  const_reference front() const {
    assert(_size);
    return (*this)[0];
  }

-  const_reference back() const
-  {
+  const_reference back() const {
    assert(_size);
    return (*this)[_size - 1];
  }

-  const_iterator begin() const
-  {
+  const_iterator begin() const {
    return const_iterator(_v, _convert, 0);
  }

-  const_iterator cbegin() const
-  {
+  const_iterator cbegin() const {
    return begin();
  }

-  const_iterator end() const
-  {
+  const_iterator end() const {
    return const_iterator(_v, _convert, _size);
  }

-  const_iterator cend() const
-  {
+  const_iterator cend() const {
    return end();
  }

 private:
  /** Wrapped vector */
-  LazyVector(U vector, size_type size, convert_type convert) : _v(vector), _size(size), _convert(convert) {}
+  LazyVector(U vector, size_type size, convert_type convert)
+      : _v(vector), _size(size), _convert(convert) {}

  U _v;
  size_type _size;
@@ -11,7 +11,7 @@ import * as React from 'react';
 import {Constructor} from '../../types/private/Utilities';
 import {AccessibilityProps} from '../Components/View/ViewAccessibility';
 import {Insets} from '../../types/public/Insets';
-import {HostInstance} from '../../types/public/ReactNativeTypes';
+import {NativeMethods} from '../../types/public/ReactNativeTypes';
 import {ColorValue, StyleProp} from '../StyleSheet/StyleSheet';
 import {ImageStyle, ViewStyle} from '../StyleSheet/StyleSheetTypes';
 import {LayoutChangeEvent, NativeSyntheticEvent} from '../Types/CoreEventTypes';
@@ -338,7 +338,7 @@ export interface ImageSize {
 }

 declare class ImageComponent extends React.Component<ImageProps> {}
-declare const ImageBase: Constructor<HostInstance> & typeof ImageComponent;
+declare const ImageBase: Constructor<NativeMethods> & typeof ImageComponent;
 export class Image extends ImageBase {
  static getSize(uri: string): Promise<ImageSize>;
  static getSize(
@@ -384,6 +384,6 @@ export interface ImageBackgroundProps extends ImagePropsBase {
 }

 declare class ImageBackgroundComponent extends React.Component<ImageBackgroundProps> {}
-declare const ImageBackgroundBase: Constructor<HostInstance> &
+declare const ImageBackgroundBase: Constructor<NativeMethods> &
  typeof ImageBackgroundComponent;
 export class ImageBackground extends ImageBackgroundBase {}
@@ -38,9 +38,11 @@ RCT_EXPORT_MODULE()
 *        be scaled down to `displaySize` rather than `size`.
 *        All units are in px (not points).
 */
-RCT_EXPORT_METHOD(
-    cropImage : (NSURLRequest *)imageRequest cropData : (JS::NativeImageEditor::Options &)cropData successCallback : (
-        RCTResponseSenderBlock)successCallback errorCallback : (RCTResponseSenderBlock)errorCallback)
+RCT_EXPORT_METHOD(cropImage
+                  : (NSURLRequest *)imageRequest cropData
+                  : (JS::NativeImageEditor::Options &)cropData successCallback
+                  : (RCTResponseSenderBlock)successCallback errorCallback
+                  : (RCTResponseSenderBlock)errorCallback)
 {
  CGRect rect = {
    [RCTConvert CGPoint:@{
@@ -331,9 +331,9 @@ static RCTImageLoaderCancellationBlock RCTLoadImageURLFromLoader(
    RCTImageLoaderPartialLoadBlock partialLoadHandler,
    RCTImageLoaderCompletionBlockWithMetadata completionHandler)
 {
-  if ([loadHandler
-          respondsToSelector:@selector
-          (loadImageForURL:size:scale:resizeMode:progressHandler:partialLoadHandler:completionHandlerWithMetadata:)]) {
+  if ([loadHandler respondsToSelector:@selector(loadImageForURL:
+                                                           size:scale:resizeMode:progressHandler:partialLoadHandler
+                                                               :completionHandlerWithMetadata:)]) {
    return [loadHandler loadImageForURL:imageURL
                                   size:size
                                  scale:scale
@@ -410,17 +410,17 @@ static RCTImageLoaderCancellationBlock RCTLoadImageURLFromLoader(
                                                    completionBlock:(RCTImageLoaderCompletionBlock)completionBlock
 {
  RCTImageURLLoaderRequest *request = [self loadImageWithURLRequest:imageURLRequest
-                                                               size:size
-                                                              scale:scale
-                                                            clipped:clipped
-                                                         resizeMode:resizeMode
-                                                           priority:priority
-                                                        attribution:{}
-                                                      progressBlock:progressBlock
-                                                   partialLoadBlock:partialLoadBlock
-                                                    completionBlock:^(NSError *error, UIImage *image, id metadata) {
-                                                      completionBlock(error, image);
-                                                    }];
+      size:size
+      scale:scale
+      clipped:clipped
+      resizeMode:resizeMode
+      priority:priority
+      attribution:{}
+      progressBlock:progressBlock
+      partialLoadBlock:partialLoadBlock
+      completionBlock:^(NSError *error, UIImage *image, id metadata) {
+        completionBlock(error, image);
+      }];
  return ^{
    [request cancel];
  };
@@ -1229,8 +1229,10 @@ static RCTImageLoaderCancellationBlock RCTLoadImageURLFromLoader(
  return std::make_shared<facebook::react::NativeImageLoaderIOSSpecJSI>(params);
 }

-RCT_EXPORT_METHOD(
-    getSize : (NSString *)uri resolve : (RCTPromiseResolveBlock)resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(getSize
+                  : (NSString *)uri resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  NSURLRequest *request = [RCTConvert NSURLRequest:uri];
  [self getImageSizeForURLRequest:request
@@ -1246,9 +1248,11 @@ RCT_EXPORT_METHOD(
                            }];
 }

-RCT_EXPORT_METHOD(
-    getSizeWithHeaders : (NSString *)uri headers : (NSDictionary *)headers resolve : (RCTPromiseResolveBlock)
-        resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(getSizeWithHeaders
+                  : (NSString *)uri headers
+                  : (NSDictionary *)headers resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  NSURL *URL = [RCTConvert NSURL:uri];
  NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
@@ -1265,15 +1269,20 @@ RCT_EXPORT_METHOD(
                            }];
 }

-RCT_EXPORT_METHOD(
-    prefetchImage : (NSString *)uri resolve : (RCTPromiseResolveBlock)resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(prefetchImage
+                  : (NSString *)uri resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  [self prefetchImageWithMetadata:uri queryRootName:nil rootTag:0 resolve:resolve reject:reject];
 }

-RCT_EXPORT_METHOD(
-    prefetchImageWithMetadata : (NSString *)uri queryRootName : (NSString *)queryRootName rootTag : (double)
-        rootTag resolve : (RCTPromiseResolveBlock)resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(prefetchImageWithMetadata
+                  : (NSString *)uri queryRootName
+                  : (NSString *)queryRootName rootTag
+                  : (double)rootTag resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  NSURLRequest *request = [RCTConvert NSURLRequest:uri];
  [self loadImageWithURLRequest:request
@@ -1297,8 +1306,10 @@ RCT_EXPORT_METHOD(
                }];
 }

-RCT_EXPORT_METHOD(
-    queryCache : (NSArray *)uris resolve : (RCTPromiseResolveBlock)resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(queryCache
+                  : (NSArray *)uris resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  resolve([self getImageCacheStatus:uris]);
 }
@@ -106,9 +106,10 @@ RCT_EXPORT_METHOD(hasImageForTag : (NSString *)imageTag callback : (RCTResponseS
 }

 // TODO (#5906496): Name could be more explicit - something like getBase64EncodedDataForTag:?
-RCT_EXPORT_METHOD(
-    getBase64ForTag : (NSString *)imageTag successCallback : (RCTResponseSenderBlock)
-        successCallback errorCallback : (RCTResponseSenderBlock)errorCallback)
+RCT_EXPORT_METHOD(getBase64ForTag
+                  : (NSString *)imageTag successCallback
+                  : (RCTResponseSenderBlock)successCallback errorCallback
+                  : (RCTResponseSenderBlock)errorCallback)
 {
  NSData *imageData = _store[imageTag];
  if (imageData == nullptr) {
@@ -122,9 +123,10 @@ RCT_EXPORT_METHOD(
  });
 }

-RCT_EXPORT_METHOD(
-    addImageFromBase64 : (NSString *)base64String successCallback : (RCTResponseSenderBlock)
-        successCallback errorCallback : (RCTResponseSenderBlock)errorCallback)
+RCT_EXPORT_METHOD(addImageFromBase64
+                  : (NSString *)base64String successCallback
+                  : (RCTResponseSenderBlock)successCallback errorCallback
+                  : (RCTResponseSenderBlock)errorCallback)

 {
  // Dispatching to a background thread to perform base64 decoding
@@ -101,11 +101,12 @@ CGRect RCTTargetRect(CGSize sourceSize, CGSize destSize, CGFloat destScale, RCTR
        sourceSize.height = destSize.height;
        sourceSize.width = sourceSize.height * aspect;
      }
-      return (CGRect){{
-                          RCTFloorValue((destSize.width - sourceSize.width) / 2, destScale),
-                          RCTFloorValue((destSize.height - sourceSize.height) / 2, destScale),
-                      },
-                      RCTCeilSize(sourceSize, destScale)};
+      return (CGRect){
+          {
+              RCTFloorValue((destSize.width - sourceSize.width) / 2, destScale),
+              RCTFloorValue((destSize.height - sourceSize.height) / 2, destScale),
+          },
+          RCTCeilSize(sourceSize, destScale)};

    case RCTResizeModeCover:

@@ -114,16 +115,17 @@ CGRect RCTTargetRect(CGSize sourceSize, CGSize destSize, CGFloat destScale, RCTR
        sourceSize.height = destSize.height;
        sourceSize.width = sourceSize.height * aspect;
        destSize.width = destSize.height * targetAspect;
-        return (CGRect){{RCTFloorValue((destSize.width - sourceSize.width) / 2, destScale), 0},
-                        RCTCeilSize(sourceSize, destScale)};
+        return (CGRect){
+            {RCTFloorValue((destSize.width - sourceSize.width) / 2, destScale), 0}, RCTCeilSize(sourceSize, destScale)};

      } else { // target is wider than content

        sourceSize.width = destSize.width;
        sourceSize.height = sourceSize.width / aspect;
        destSize.height = destSize.width / targetAspect;
-        return (CGRect){{0, RCTFloorValue((destSize.height - sourceSize.height) / 2, destScale)},
-                        RCTCeilSize(sourceSize, destScale)};
+        return (CGRect){
+            {0, RCTFloorValue((destSize.height - sourceSize.height) / 2, destScale)},
+            RCTCeilSize(sourceSize, destScale)};
      }

    case RCTResizeModeCenter:
@@ -138,11 +140,12 @@ CGRect RCTTargetRect(CGSize sourceSize, CGSize destSize, CGFloat destScale, RCTR
        sourceSize.width = sourceSize.height * aspect;
      }

-      return (CGRect){{
-                          RCTFloorValue((destSize.width - sourceSize.width) / 2, destScale),
-                          RCTFloorValue((destSize.height - sourceSize.height) / 2, destScale),
-                      },
-                      RCTCeilSize(sourceSize, destScale)};
+      return (CGRect){
+          {
+              RCTFloorValue((destSize.width - sourceSize.width) / 2, destScale),
+              RCTFloorValue((destSize.height - sourceSize.height) / 2, destScale),
+          },
+          RCTCeilSize(sourceSize, destScale)};
  }
 }

@@ -290,31 +293,18 @@ UIImage *__nullable RCTDecodeImageWithData(NSData *data, CGSize destSize, CGFloa
  // Calculate target size
  CGSize targetSize = RCTTargetSize(sourceSize, 1, destSize, destScale, resizeMode, NO);
  CGSize targetPixelSize = RCTSizeInPixels(targetSize, destScale);
-  CGImageRef imageRef;
-  BOOL createThumbnail = targetPixelSize.width != 0 && targetPixelSize.height != 0 &&
-      (sourceSize.width > targetPixelSize.width || sourceSize.height > targetPixelSize.height);
+  CGFloat maxPixelSize =
+      fmax(fmin(sourceSize.width, targetPixelSize.width), fmin(sourceSize.height, targetPixelSize.height));

-  if (createThumbnail) {
-    CGFloat maxPixelSize = fmax(targetPixelSize.width, targetPixelSize.height);
-
-    // Get a thumbnail of the source image. This is usually slower than creating a full-sized image,
-    // but takes up less memory once it's done.
-    imageRef = CGImageSourceCreateThumbnailAtIndex(
-        sourceRef, 0, (__bridge CFDictionaryRef) @{
-          (id)kCGImageSourceShouldAllowFloat : @YES,
-          (id)kCGImageSourceCreateThumbnailWithTransform : @YES,
-          (id)kCGImageSourceCreateThumbnailFromImageAlways : @YES,
-          (id)kCGImageSourceThumbnailMaxPixelSize : @(maxPixelSize),
-        });
-  } else {
-    // Get an image in full size. This is faster than `CGImageSourceCreateThumbnailAtIndex`
-    // and consumes less memory if only the target size doesn't require downscaling.
-    imageRef = CGImageSourceCreateImageAtIndex(
-        sourceRef, 0, (__bridge CFDictionaryRef) @{
-          (id)kCGImageSourceShouldAllowFloat : @YES,
-        });
-  }
+  NSDictionary<NSString *, NSNumber *> *options = @{
+    (id)kCGImageSourceShouldAllowFloat : @YES,
+    (id)kCGImageSourceCreateThumbnailWithTransform : @YES,
+    (id)kCGImageSourceCreateThumbnailFromImageAlways : @YES,
+    (id)kCGImageSourceThumbnailMaxPixelSize : @(maxPixelSize),
+  };

+  // Get thumbnail
+  CGImageRef imageRef = CGImageSourceCreateThumbnailAtIndex(sourceRef, 0, (__bridge CFDictionaryRef)options);
  CFRelease(sourceRef);
  if (!imageRef) {
    return nil;
@@ -53,9 +53,10 @@ RCT_CUSTOM_VIEW_PROPERTY(tintColor, UIColor, RCTImageView)
  view.renderingMode = json ? UIImageRenderingModeAlwaysTemplate : defaultView.renderingMode;
 }

-RCT_EXPORT_METHOD(
-    getSize : (NSURLRequest *)request successBlock : (RCTResponseSenderBlock)
-        successBlock errorBlock : (RCTResponseErrorBlock)errorBlock)
+RCT_EXPORT_METHOD(getSize
+                  : (NSURLRequest *)request successBlock
+                  : (RCTResponseSenderBlock)successBlock errorBlock
+                  : (RCTResponseErrorBlock)errorBlock)
 {
  [[self.bridge moduleForName:@"ImageLoader"
        lazilyLoadIfNecessary:YES] getImageSizeForURLRequest:request
@@ -68,9 +69,10 @@ RCT_EXPORT_METHOD(
                                                       }];
 }

-RCT_EXPORT_METHOD(
-    getSizeWithHeaders : (RCTImageSource *)source resolve : (RCTPromiseResolveBlock)
-        resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(getSizeWithHeaders
+                  : (RCTImageSource *)source resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  [[self.bridge moduleForName:@"ImageLoader" lazilyLoadIfNecessary:YES]
      getImageSizeForURLRequest:source.request
@@ -83,9 +85,10 @@ RCT_EXPORT_METHOD(
                          }];
 }

-RCT_EXPORT_METHOD(
-    prefetchImage : (NSURLRequest *)request resolve : (RCTPromiseResolveBlock)resolve reject : (RCTPromiseRejectBlock)
-        reject)
+RCT_EXPORT_METHOD(prefetchImage
+                  : (NSURLRequest *)request resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  if (!request) {
    reject(@"E_INVALID_URI", @"Cannot prefetch an image for an empty URI", nil);
@@ -104,8 +107,10 @@ RCT_EXPORT_METHOD(
                              }];
 }

-RCT_EXPORT_METHOD(
-    queryCache : (NSArray *)requests resolve : (RCTPromiseResolveBlock)resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(queryCache
+                  : (NSArray *)requests resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  resolve([[self.bridge moduleForName:@"ImageLoader"] getImageCacheStatus:requests]);
 }
@@ -87,8 +87,10 @@ RCT_EXPORT_MODULE()
  [self sendEventWithName:@"url" body:notification.userInfo];
 }

-RCT_EXPORT_METHOD(
-    openURL : (NSURL *)URL resolve : (RCTPromiseResolveBlock)resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(openURL
+                  : (NSURL *)URL resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  [RCTSharedApplication() openURL:URL
      options:@{}
@@ -112,8 +114,10 @@ RCT_EXPORT_METHOD(
      }];
 }

-RCT_EXPORT_METHOD(
-    canOpenURL : (NSURL *)URL resolve : (RCTPromiseResolveBlock)resolve reject : (__unused RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(canOpenURL
+                  : (NSURL *)URL resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (__unused RCTPromiseRejectBlock)reject)
 {
  if (RCTRunningInAppExtension()) {
    // Technically Today widgets can open urls, but supporting that would require
@@ -177,9 +181,11 @@ RCT_EXPORT_METHOD(openSettings : (RCTPromiseResolveBlock)resolve reject : (__unu
      }];
 }

-RCT_EXPORT_METHOD(
-    sendIntent : (NSString *)action extras : (NSArray *_Nullable)extras resolve : (RCTPromiseResolveBlock)
-        resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(sendIntent
+                  : (NSString *)action extras
+                  : (NSArray *_Nullable)extras resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  RCTLogError(@"Not implemented: %@", NSStringFromSelector(_cmd));
 }
@@ -87,7 +87,7 @@ export default function Ansi({
    <View style={styles.container}>
      {parsedLines.map((items, i) => (
        <View style={styles.line} key={i}>
-          <Text style={styles.text}>
+          <Text>
            {items.map((bundle, key) => {
              const textStyle =
                bundle.fg && COLORS[bundle.fg]
@@ -122,7 +122,4 @@ const styles = StyleSheet.create({
  line: {
    flexDirection: 'row',
  },
-  text: {
-    flexGrow: 1,
-  },
 });
@@ -118,9 +118,11 @@ RCT_EXPORT_METHOD(disconnectAnimatedNodes : (double)parentTag childTag : (double
  }];
 }

-RCT_EXPORT_METHOD(
-    startAnimatingNode : (double)animationId nodeTag : (double)nodeTag config : (NSDictionary<NSString *, id> *)
-        config endCallback : (RCTResponseSenderBlock)callBack)
+RCT_EXPORT_METHOD(startAnimatingNode
+                  : (double)animationId nodeTag
+                  : (double)nodeTag config
+                  : (NSDictionary<NSString *, id> *)config endCallback
+                  : (RCTResponseSenderBlock)callBack)
 {
  [self addOperationBlock:^(RCTNativeAnimatedNodesManager *nodesManager) {
    [nodesManager startAnimatingNode:[NSNumber numberWithDouble:animationId]
@@ -226,9 +228,10 @@ RCT_EXPORT_METHOD(stopListeningToAnimatedNodeValue : (double)tag)
  }];
 }

-RCT_EXPORT_METHOD(
-    addAnimatedEventToView : (double)viewTag eventName : (nonnull NSString *)
-        eventName eventMapping : (JS::NativeAnimatedModule::EventMapping &)eventMapping)
+RCT_EXPORT_METHOD(addAnimatedEventToView
+                  : (double)viewTag eventName
+                  : (nonnull NSString *)eventName eventMapping
+                  : (JS::NativeAnimatedModule::EventMapping &)eventMapping)
 {
  NSMutableDictionary *eventMappingDict = [NSMutableDictionary new];
  eventMappingDict[@"nativeEventPath"] = RCTConvertVecToArray(eventMapping.nativeEventPath());
@@ -244,9 +247,10 @@ RCT_EXPORT_METHOD(
  }];
 }

-RCT_EXPORT_METHOD(
-    removeAnimatedEventFromView : (double)viewTag eventName : (nonnull NSString *)eventName animatedNodeTag : (double)
-        animatedNodeTag)
+RCT_EXPORT_METHOD(removeAnimatedEventFromView
+                  : (double)viewTag eventName
+                  : (nonnull NSString *)eventName animatedNodeTag
+                  : (double)animatedNodeTag)
 {
  [self addOperationBlock:^(RCTNativeAnimatedNodesManager *nodesManager) {
    [nodesManager removeAnimatedEventFromView:[NSNumber numberWithDouble:viewTag]
@@ -108,9 +108,11 @@ RCT_EXPORT_METHOD(disconnectAnimatedNodes : (double)parentTag childTag : (double
  }];
 }

-RCT_EXPORT_METHOD(
-    startAnimatingNode : (double)animationId nodeTag : (double)nodeTag config : (NSDictionary<NSString *, id> *)
-        config endCallback : (RCTResponseSenderBlock)callBack)
+RCT_EXPORT_METHOD(startAnimatingNode
+                  : (double)animationId nodeTag
+                  : (double)nodeTag config
+                  : (NSDictionary<NSString *, id> *)config endCallback
+                  : (RCTResponseSenderBlock)callBack)
 {
  [self queueFlushedOperationBlock:^(RCTNativeAnimatedNodesManager *nodesManager) {
    [nodesManager startAnimatingNode:[NSNumber numberWithDouble:animationId]
@@ -202,9 +204,10 @@ RCT_EXPORT_METHOD(stopListeningToAnimatedNodeValue : (double)tag)
  }];
 }

-RCT_EXPORT_METHOD(
-    addAnimatedEventToView : (double)viewTag eventName : (nonnull NSString *)
-        eventName eventMapping : (JS::NativeAnimatedModule::EventMapping &)eventMapping)
+RCT_EXPORT_METHOD(addAnimatedEventToView
+                  : (double)viewTag eventName
+                  : (nonnull NSString *)eventName eventMapping
+                  : (JS::NativeAnimatedModule::EventMapping &)eventMapping)
 {
  NSMutableDictionary *eventMappingDict = [NSMutableDictionary new];
  eventMappingDict[@"nativeEventPath"] = RCTConvertVecToArray(eventMapping.nativeEventPath());
@@ -220,9 +223,10 @@ RCT_EXPORT_METHOD(
  }];
 }

-RCT_EXPORT_METHOD(
-    removeAnimatedEventFromView : (double)viewTag eventName : (nonnull NSString *)eventName animatedNodeTag : (double)
-        animatedNodeTag)
+RCT_EXPORT_METHOD(removeAnimatedEventFromView
+                  : (double)viewTag eventName
+                  : (nonnull NSString *)eventName animatedNodeTag
+                  : (double)animatedNodeTag)
 {
  [self queueOperationBlock:^(RCTNativeAnimatedNodesManager *nodesManager) {
    [nodesManager removeAnimatedEventFromView:[NSNumber numberWithDouble:viewTag]
@@ -179,17 +179,8 @@ const validAttributesForNonEventProps = {
  backgroundColor: {process: require('../StyleSheet/processColor').default},
  transform: true,
  transformOrigin: true,
-  experimental_backgroundImage: ReactNativeFeatureFlags.enableNativeCSSParsing()
-    ? (true as const)
-    : {process: require('../StyleSheet/processBackgroundImage').default},
-  experimental_backgroundSize: {
-    process: require('../StyleSheet/processBackgroundSize').default,
-  },
-  experimental_backgroundPosition: {
-    process: require('../StyleSheet/processBackgroundPosition').default,
-  },
-  experimental_backgroundRepeat: {
-    process: require('../StyleSheet/processBackgroundRepeat').default,
+  experimental_backgroundImage: {
+    process: require('../StyleSheet/processBackgroundImage').default,
  },
  boxShadow: ReactNativeFeatureFlags.enableNativeCSSParsing()
    ? (true as const)
@@ -23,9 +23,7 @@ export function unstable_hasComponent(name: string): boolean {
      hasNativeComponent = global.__nativeComponentRegistry__hasComponent(name);
      componentNameToExists.set(name, hasNativeComponent);
    } else {
-      throw new Error(
-        `unstable_hasComponent('${name}'): Global function is not registered`,
-      );
+      throw `unstable_hasComponent('${name}'): Global function is not registered`;
    }
  }
  return hasNativeComponent;
@@ -797,9 +797,9 @@ RCT_EXPORT_MODULE()

 #pragma mark - JS API

-RCT_EXPORT_METHOD(
-    sendRequest : (JS::NativeNetworkingIOS::SpecSendRequestQuery &)query callback : (RCTResponseSenderBlock)
-        responseSender)
+RCT_EXPORT_METHOD(sendRequest
+                  : (JS::NativeNetworkingIOS::SpecSendRequestQuery &)query callback
+                  : (RCTResponseSenderBlock)responseSender)
 {
  NSString *method = query.method();
  NSString *url = query.url();
@@ -14,6 +14,7 @@ import type {
  EventCallback,
  EventListener,
 } from '../../src/private/webapis/dom/events/EventTarget';
+import type Performance from '../../src/private/webapis/performance/Performance';
 import type {IPerformanceLogger} from '../Utilities/createPerformanceLogger';

 import Event from '../../src/private/webapis/dom/events/Event';
@@ -33,7 +34,13 @@ const RCTNetworking = require('./RCTNetworking').default;
 const base64 = require('base64-js');
 const invariant = require('invariant');

+const PERFORMANCE_TRACK_NAME = 'Network (JS-initiated only)';
+const PERFORMANCE_TRACK_GROUP = 'Chrome DevTools Temp Compat';
+
+declare var performance: Performance;
+
 const DEBUG_NETWORK_SEND_DELAY: false = false; // Set to a number of milliseconds when debugging
+const LABEL_FOR_MISSING_URL_FOR_PROFILING = 'Unknown URL';

 export type NativeResponseType = 'base64' | 'blob' | 'text';
 export type ResponseType =
@@ -134,6 +141,7 @@ class XMLHttpRequest extends EventTarget {
  static DONE: number = DONE;

  static _interceptor: ?XHRInterceptor = null;
+  static _profiling: boolean = false;

  UNSENT: number = UNSENT;
  OPENED: number = OPENED;
@@ -174,6 +182,10 @@ class XMLHttpRequest extends EventTarget {
    XMLHttpRequest._interceptor = interceptor;
  }

+  static enableProfiling(enableProfiling: boolean): void {
+    XMLHttpRequest._profiling = enableProfiling;
+  }
+
  constructor() {
    super();
    this._reset();
@@ -377,12 +389,23 @@ class XMLHttpRequest extends EventTarget {
      return;
    }

+    const start = XMLHttpRequest._profiling ? performance.now() : undefined;
+
    if (!this._response) {
      this._response = responseText;
    } else {
      this._response += responseText;
    }

+    if (XMLHttpRequest._profiling) {
+      console.timeStamp(
+        'Incremental Data: ' + this._getMeasureURL(),
+        start,
+        undefined,
+        PERFORMANCE_TRACK_NAME,
+        PERFORMANCE_TRACK_GROUP,
+      );
+    }
    XMLHttpRequest._interceptor &&
      XMLHttpRequest._interceptor.dataReceived(requestId, responseText);

@@ -427,7 +450,16 @@ class XMLHttpRequest extends EventTarget {
      this._clearSubscriptions();
      this._requestId = null;
      this.setReadyState(this.DONE);
-
+      if (XMLHttpRequest._profiling && this._startTime != null) {
+        const start = this._startTime;
+        console.timeStamp(
+          this._getMeasureURL(),
+          start,
+          undefined,
+          PERFORMANCE_TRACK_NAME,
+          PERFORMANCE_TRACK_GROUP,
+        );
+      }
      if (error) {
        XMLHttpRequest._interceptor &&
          XMLHttpRequest._interceptor.loadingFailed(requestId, error);
@@ -697,6 +729,12 @@ class XMLHttpRequest extends EventTarget {
    super.addEventListener(type, listener);
  }

+  _getMeasureURL(): string {
+    return (
+      this._trackingName ?? this._url ?? LABEL_FOR_MISSING_URL_FOR_PROFILING
+    );
+  }
+
  /*
   * `on<event>` event handling (without JS prototype magic).
   */
@@ -8,26 +8,15 @@
 * @format
 */

-import * as ReactNativeFeatureFlags from '../../src/private/featureflags/ReactNativeFeatureFlags';
 import Pressability, {
  type EventHandlers,
  type PressabilityConfig,
 } from './Pressability';
-import {useEffect, useInsertionEffect, useRef} from 'react';
+import {useEffect, useRef} from 'react';

 declare function usePressability(config: PressabilityConfig): EventHandlers;
 declare function usePressability(config: null | void): null | EventHandlers;

-// Experiments with using `useInsertionEffect` instead of `useEffect`, which
-// changes whether `Pressability` is configured or reset when inm a hidden
-// Activity. With `useInsertionEffect`, `Pressability` behaves more like a
-// platform control (e.g. Pointer Events), especially with respect to events
-// like focus and blur.
-const useConfigurationEffect =
-  ReactNativeFeatureFlags.configurePressabilityDuringInsertion()
-    ? useInsertionEffect
-    : useEffect;
-
 /**
 * Creates a persistent instance of `Pressability` that automatically configures
 * itself and resets. Accepts null `config` to support lazy initialization. Once
@@ -51,7 +40,7 @@ export default function usePressability(

  // On the initial mount, this is a no-op. On updates, `pressability` will be
  // re-configured to use the new configuration.
-  useConfigurationEffect(() => {
+  useEffect(() => {
    if (config != null && pressability != null) {
      pressability.configure(config);
    }
@@ -59,7 +48,7 @@ export default function usePressability(

  // On unmount, reset pending state and timers inside `pressability`. This is
  // a separate effect because we do not want to reset when `config` changes.
-  useConfigurationEffect(() => {
+  useEffect(() => {
    if (pressability != null) {
      return () => {
        pressability.reset();
@@ -327,9 +327,10 @@ RCT_EXPORT_METHOD(getApplicationIconBadgeNumber : (RCTResponseSenderBlock)callba
  callback(@[ @(RCTSharedApplication().applicationIconBadgeNumber) ]);
 }

-RCT_EXPORT_METHOD(
-    requestPermissions : (JS::NativePushNotificationManagerIOS::SpecRequestPermissionsPermission &)
-        permissions resolve : (RCTPromiseResolveBlock)resolve reject : (RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(requestPermissions
+                  : (JS::NativePushNotificationManagerIOS::SpecRequestPermissionsPermission &)permissions resolve
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (RCTPromiseRejectBlock)reject)
 {
  if (RCTRunningInAppExtension()) {
    reject(
@@ -505,8 +506,9 @@ RCT_EXPORT_METHOD(cancelLocalNotifications : (NSDictionary<NSString *, id> *)use
  }];
 }

-RCT_EXPORT_METHOD(
-    getInitialNotification : (RCTPromiseResolveBlock)resolve reject : (__unused RCTPromiseRejectBlock)reject)
+RCT_EXPORT_METHOD(getInitialNotification
+                  : (RCTPromiseResolveBlock)resolve reject
+                  : (__unused RCTPromiseRejectBlock)reject)
 {
  // The user actioned a local or remote notification to launch the app. Notification is represented by UNNotification.
  // Set this property in the implementation of
@@ -0,0 +1,152 @@
+/**
+ * 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
+ */
+
+import type {
+  HostInstance,
+  MeasureInWindowOnSuccessCallback,
+  MeasureLayoutOnSuccessCallback,
+  MeasureOnSuccessCallback,
+  NativeMethods,
+} from '../../../src/private/types/HostInstance';
+import type {
+  InternalInstanceHandle,
+  ViewConfig,
+} from '../../Renderer/shims/ReactNativeTypes';
+
+import TextInputState from '../../Components/TextInput/TextInputState';
+import {getNodeFromInternalInstanceHandle} from '../../ReactNative/RendererProxy';
+import {getFabricUIManager} from '../FabricUIManager';
+import {create} from './ReactNativeAttributePayload';
+import warnForStyleProps from './warnForStyleProps';
+import nullthrows from 'nullthrows';
+
+const {
+  measure: fabricMeasure,
+  measureInWindow: fabricMeasureInWindow,
+  measureLayout: fabricMeasureLayout,
+  getBoundingClientRect: fabricGetBoundingClientRect,
+  setNativeProps,
+} = nullthrows(getFabricUIManager());
+
+const noop = () => {};
+
+/**
+ * This is used for refs on host components.
+ */
+export default class ReactFabricHostComponent implements NativeMethods {
+  // These need to be accessible from `ReactFabricPublicInstanceUtils`.
+  __nativeTag: number;
+  __internalInstanceHandle: InternalInstanceHandle;
+
+  _viewConfig: ViewConfig;
+
+  constructor(
+    tag: number,
+    viewConfig: ViewConfig,
+    internalInstanceHandle: InternalInstanceHandle,
+  ) {
+    this.__nativeTag = tag;
+    this._viewConfig = viewConfig;
+    this.__internalInstanceHandle = internalInstanceHandle;
+  }
+
+  blur() {
+    // $FlowFixMe[incompatible-type] - Error supressed during the migration of HostInstance to ReactNativeElement
+    TextInputState.blurTextInput(this);
+  }
+
+  focus() {
+    // $FlowFixMe[incompatible-type] - Error supressed during the migration of HostInstance to ReactNativeElement
+    TextInputState.focusTextInput(this);
+  }
+
+  measure(callback: MeasureOnSuccessCallback) {
+    const node = getNodeFromInternalInstanceHandle(
+      this.__internalInstanceHandle,
+    );
+    if (node != null) {
+      fabricMeasure(node, callback);
+    }
+  }
+
+  measureInWindow(callback: MeasureInWindowOnSuccessCallback) {
+    const node = getNodeFromInternalInstanceHandle(
+      this.__internalInstanceHandle,
+    );
+    if (node != null) {
+      fabricMeasureInWindow(node, callback);
+    }
+  }
+
+  measureLayout(
+    relativeToNativeNode: number | HostInstance,
+    onSuccess: MeasureLayoutOnSuccessCallback,
+    onFail?: () => void /* currently unused */,
+  ) {
+    if (
+      typeof relativeToNativeNode === 'number' ||
+      !(relativeToNativeNode instanceof ReactFabricHostComponent)
+    ) {
+      if (__DEV__) {
+        console.error(
+          'Warning: ref.measureLayout must be called with a ref to a native component.',
+        );
+      }
+
+      return;
+    }
+
+    const toStateNode = getNodeFromInternalInstanceHandle(
+      this.__internalInstanceHandle,
+    );
+    const fromStateNode = getNodeFromInternalInstanceHandle(
+      relativeToNativeNode.__internalInstanceHandle,
+    );
+
+    if (toStateNode != null && fromStateNode != null) {
+      fabricMeasureLayout(
+        toStateNode,
+        fromStateNode,
+        onFail != null ? onFail : noop,
+        onSuccess != null ? onSuccess : noop,
+      );
+    }
+  }
+
+  unstable_getBoundingClientRect(): DOMRect {
+    const node = getNodeFromInternalInstanceHandle(
+      this.__internalInstanceHandle,
+    );
+    if (node != null) {
+      const rect = fabricGetBoundingClientRect(node, true);
+
+      if (rect) {
+        return new DOMRect(rect[0], rect[1], rect[2], rect[3]);
+      }
+    }
+
+    // Empty rect if any of the above failed
+    return new DOMRect(0, 0, 0, 0);
+  }
+
+  setNativeProps(nativeProps: {...}): void {
+    if (__DEV__) {
+      warnForStyleProps(nativeProps, this._viewConfig.validAttributes);
+    }
+    const updatePayload = create(nativeProps, this._viewConfig.validAttributes);
+
+    const node = getNodeFromInternalInstanceHandle(
+      this.__internalInstanceHandle,
+    );
+    if (node != null && updatePayload != null) {
+      setNativeProps(node, updatePayload);
+    }
+  }
+}
@@ -13,62 +13,124 @@
 * instances and get some data from them (like their instance handle / fiber).
 */

+import type ReactNativeDocumentT from '../../../src/private/webapis/dom/nodes/ReactNativeDocument';
+import typeof * as ReactNativeDocumentModuleT from '../../../src/private/webapis/dom/nodes/ReactNativeDocument';
+import type ReactNativeElementT from '../../../src/private/webapis/dom/nodes/ReactNativeElement';
+import type ReadOnlyTextT from '../../../src/private/webapis/dom/nodes/ReadOnlyText';
+import typeof * as RendererProxyT from '../../ReactNative/RendererProxy';
 import type {
  InternalInstanceHandle,
  Node,
  ViewConfig,
 } from '../../Renderer/shims/ReactNativeTypes';
 import type {RootTag} from '../RootTag';
+import type ReactFabricHostComponentT from './ReactFabricHostComponent';

-import ReactNativeDocument, {
-  createReactNativeDocument,
-} from '../../../src/private/webapis/dom/nodes/ReactNativeDocument';
-import ReactNativeElement from '../../../src/private/webapis/dom/nodes/ReactNativeElement';
-import ReadOnlyText from '../../../src/private/webapis/dom/nodes/ReadOnlyText';
-import * as RendererProxy from '../../ReactNative/RendererProxy';
+import * as ReactNativeFeatureFlags from '../../../src/private/featureflags/ReactNativeFeatureFlags';

 export opaque type PublicRootInstance = mixed;

+// Lazy loaded to avoid evaluating the module when using the legacy renderer.
+let ReactNativeDocumentModuleObject: ?ReactNativeDocumentModuleT;
+let ReactFabricHostComponentClass: Class<ReactFabricHostComponentT>;
+let ReactNativeElementClass: Class<ReactNativeElementT>;
+let ReadOnlyTextClass: Class<ReadOnlyTextT>;
+let RendererProxy: RendererProxyT;
+
+function getReactNativeDocumentModule(): ReactNativeDocumentModuleT {
+  if (ReactNativeDocumentModuleObject == null) {
+    // We initialize this lazily to avoid a require cycle.
+    ReactNativeDocumentModuleObject = require('../../../src/private/webapis/dom/nodes/ReactNativeDocument');
+  }
+
+  return ReactNativeDocumentModuleObject;
+}
+
+function getReactNativeElementClass(): Class<ReactNativeElementT> {
+  if (ReactNativeElementClass == null) {
+    ReactNativeElementClass =
+      require('../../../src/private/webapis/dom/nodes/ReactNativeElement').default;
+  }
+  return ReactNativeElementClass;
+}
+
+function getReactFabricHostComponentClass(): Class<ReactFabricHostComponentT> {
+  if (ReactFabricHostComponentClass == null) {
+    ReactFabricHostComponentClass =
+      require('./ReactFabricHostComponent').default;
+  }
+  return ReactFabricHostComponentClass;
+}
+
+function getReadOnlyTextClass(): Class<ReadOnlyTextT> {
+  if (ReadOnlyTextClass == null) {
+    ReadOnlyTextClass =
+      require('../../../src/private/webapis/dom/nodes/ReadOnlyText').default;
+  }
+  return ReadOnlyTextClass;
+}
+
 export function createPublicRootInstance(rootTag: RootTag): PublicRootInstance {
+  if (ReactNativeFeatureFlags.enableAccessToHostTreeInFabric()) {
+    const ReactNativeDocumentModule = getReactNativeDocumentModule();
+
+    // $FlowExpectedError[incompatible-return]
+    return ReactNativeDocumentModule.createReactNativeDocument(rootTag);
+  }
+
  // $FlowExpectedError[incompatible-return]
-  return createReactNativeDocument(rootTag);
+  return null;
 }

 export function createPublicInstance(
  tag: number,
  viewConfig: ViewConfig,
  internalInstanceHandle: InternalInstanceHandle,
-  ownerDocument: ReactNativeDocument,
-): ReactNativeElement {
-  return new ReactNativeElement(
-    tag,
-    viewConfig,
-    internalInstanceHandle,
-    ownerDocument,
-  );
+  ownerDocument: ReactNativeDocumentT,
+): ReactFabricHostComponentT | ReactNativeElementT {
+  if (ReactNativeFeatureFlags.enableAccessToHostTreeInFabric()) {
+    const ReactNativeElement = getReactNativeElementClass();
+    return new ReactNativeElement(
+      tag,
+      viewConfig,
+      internalInstanceHandle,
+      ownerDocument,
+    );
+  } else {
+    const ReactFabricHostComponent = getReactFabricHostComponentClass();
+    return new ReactFabricHostComponent(
+      tag,
+      viewConfig,
+      internalInstanceHandle,
+    );
+  }
 }

 export function createPublicTextInstance(
  internalInstanceHandle: InternalInstanceHandle,
-  ownerDocument: ReactNativeDocument,
-): ReadOnlyText {
+  ownerDocument: ReactNativeDocumentT,
+): ReadOnlyTextT {
+  const ReadOnlyText = getReadOnlyTextClass();
  return new ReadOnlyText(internalInstanceHandle, ownerDocument);
 }

 export function getNativeTagFromPublicInstance(
-  publicInstance: ReactNativeElement,
+  publicInstance: ReactFabricHostComponentT | ReactNativeElementT,
 ): number {
  return publicInstance.__nativeTag;
 }

 export function getNodeFromPublicInstance(
-  publicInstance: ReactNativeElement,
+  publicInstance: ReactFabricHostComponentT | ReactNativeElementT,
 ): ?Node {
  // Avoid loading ReactFabric if using an instance from the legacy renderer.
  if (publicInstance.__internalInstanceHandle == null) {
    return null;
  }

+  if (RendererProxy == null) {
+    RendererProxy = require('../../ReactNative/RendererProxy');
+  }
  return RendererProxy.getNodeFromInternalInstanceHandle(
    // $FlowExpectedError[incompatible-type] __internalInstanceHandle is always an InternalInstanceHandle from React when we get here.
    publicInstance.__internalInstanceHandle,
@@ -76,7 +138,7 @@ export function getNodeFromPublicInstance(
 }

 export function getInternalInstanceHandleFromPublicInstance(
-  publicInstance: ReactNativeElement,
+  publicInstance: ReactFabricHostComponentT | ReactNativeElementT,
 ): InternalInstanceHandle {
  // TODO(T174762768): Remove this once OSS versions of renderers will be synced.
  // $FlowExpectedError[prop-missing] Keeping this for backwards-compatibility with the renderers versions in open source.
@@ -0,0 +1,75 @@
+/**
+ * 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
+ */
+
+import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';
+
+import type {
+  InternalInstanceHandle,
+  ViewConfig,
+} from 'react-native/Libraries/Renderer/shims/ReactNativeTypes';
+import type ReactNativeDocument from 'react-native/src/private/webapis/dom/nodes/ReactNativeDocument';
+
+import * as Fantom from '@react-native/fantom';
+import ReactFabricHostComponent from 'react-native/Libraries/ReactNative/ReactFabricPublicInstance/ReactFabricHostComponent';
+import ReactNativeElement from 'react-native/src/private/webapis/dom/nodes/ReactNativeElement';
+
+// Create fake parameters for the class.
+const tag = 11;
+const viewConfig: ViewConfig = {
+  uiViewClassName: 'test',
+  validAttributes: {
+    style: {},
+  },
+};
+// $FlowExpectedError[incompatible-type]
+const internalInstanceHandle: InternalInstanceHandle = {};
+// $FlowExpectedError[incompatible-type]
+const ownerDocument: ReactNativeDocument = {};
+
+const ITERATIONS = 100;
+
+const now = Fantom.unstable_benchmark.now;
+
+/* eslint-disable no-new */
+Fantom.unstable_benchmark
+  .suite('ReactNativeElement vs. ReactFabricHostComponent', {
+    minIterations: 50000,
+  })
+  .test('ReactNativeElement', () => {
+    // This logic is very fast and if we only run it once the cost of calling
+    // the benchmark function itself is significant. Calling it in a loop and
+    // computing the average is more accurate to account for that.
+    const start = now();
+    for (let i = 0; i < ITERATIONS; i++) {
+      new ReactNativeElement(
+        tag,
+        viewConfig,
+        internalInstanceHandle,
+        ownerDocument,
+      );
+    }
+    const end = now();
+    return {
+      overriddenDuration: (end - start) / ITERATIONS,
+    };
+  })
+  .test('ReactFabricHostComponent', () => {
+    // This logic is very fast and if we only run it once the cost of calling
+    // the benchmark function itself is significant. Calling it in a loop and
+    // computing the average is more accurate to account for that.
+    const start = now();
+    for (let i = 0; i < ITERATIONS; i++) {
+      new ReactFabricHostComponent(tag, viewConfig, internalInstanceHandle);
+    }
+    const end = now();
+    return {
+      overriddenDuration: (end - start) / ITERATIONS,
+    };
+  });
@@ -0,0 +1,353 @@
+/**
+ * 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
+ * @fantom_flags enableAccessToHostTreeInFabric:*
+ */
+
+import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';
+
+import type {HostInstance} from 'react-native';
+
+import ReactNativeElement from '../../../../src/private/webapis/dom/nodes/ReactNativeElement';
+import TextInput from '../../../Components/TextInput/TextInput';
+import TextInputState from '../../../Components/TextInput/TextInputState';
+import View from '../../../Components/View/View';
+import ReactFabricHostComponent from '../ReactFabricHostComponent';
+import * as Fantom from '@react-native/fantom';
+import nullthrows from 'nullthrows';
+import * as React from 'react';
+import {createRef} from 'react';
+import * as ReactNativeFeatureFlags from 'react-native/src/private/featureflags/ReactNativeFeatureFlags';
+
+// TODO: move these tests to the test file for `ReactNativeElement` when the legacy implementation is removed.
+describe('ReactFabricPublicInstance', () => {
+  it('should provide instances of the right class as refs in host components', () => {
+    const nodeRef = createRef<HostInstance>();
+
+    const root = Fantom.createRoot();
+    Fantom.runTask(() => {
+      root.render(<View ref={nodeRef} />);
+    });
+
+    const node = nullthrows(nodeRef.current);
+
+    expect(node).toBeInstanceOf(
+      ReactNativeFeatureFlags.enableAccessToHostTreeInFabric()
+        ? ReactNativeElement
+        : ReactFabricHostComponent,
+    );
+  });
+
+  describe('blur', () => {
+    test('blur() invokes TextInputState', () => {
+      const root = Fantom.createRoot();
+      const nodeRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(<TextInput ref={nodeRef} />);
+      });
+
+      const node = nullthrows(nodeRef.current);
+
+      const blurTextInput = jest.fn();
+
+      // We don't support view commands in Fantom yet, so we have to mock this.
+      TextInputState.blurTextInput = blurTextInput;
+
+      Fantom.runTask(() => {
+        node.blur();
+      });
+
+      expect(blurTextInput).toHaveBeenCalledTimes(1);
+      expect(blurTextInput.mock.calls).toEqual([[node]]);
+    });
+  });
+
+  describe('focus', () => {
+    test('focus() invokes TextInputState', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(<TextInput ref={ref} />);
+      });
+
+      const node = nullthrows(ref.current);
+
+      const focusTextInput = jest.fn();
+
+      // We don't support view commands in Fantom yet, so we have to mock this.
+      TextInputState.focusTextInput = focusTextInput;
+
+      Fantom.runTask(() => {
+        node.focus();
+      });
+
+      expect(focusTextInput).toHaveBeenCalledTimes(1);
+      expect(focusTextInput.mock.calls).toEqual([[node]]);
+    });
+  });
+
+  describe('measure', () => {
+    it('component.measure(...) invokes callback', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={ref}
+          />,
+        );
+      });
+
+      const node = nullthrows(ref.current);
+
+      const callback = jest.fn();
+      node.measure(callback);
+
+      expect(callback).toHaveBeenCalledTimes(1);
+      expect(callback.mock.calls).toEqual([[10, 10, 100, 100, 10, 10]]);
+    });
+
+    it('unmounted.measure(...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={ref}
+          />,
+        );
+      });
+
+      const node = nullthrows(ref.current);
+
+      Fantom.runTask(() => {
+        root.render(<></>);
+      });
+
+      const callback = jest.fn();
+      node.measure(callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('measureInWindow', () => {
+    it('component.measureInWindow(...) invokes callback', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={ref}
+          />,
+        );
+      });
+
+      const node = nullthrows(ref.current);
+
+      const callback = jest.fn();
+      node.measureInWindow(callback);
+
+      expect(callback).toHaveBeenCalledTimes(1);
+      expect(callback.mock.calls).toEqual([[10, 10, 100, 100]]);
+    });
+
+    it('unmounted.measureInWindow(...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={ref}
+          />,
+        );
+      });
+
+      const node = nullthrows(ref.current);
+
+      Fantom.runTask(() => {
+        root.render(<></>);
+      });
+
+      const callback = jest.fn();
+      node.measureInWindow(callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('measureLayout', () => {
+    it('component.measureLayout(component, ...) invokes callback', () => {
+      const root = Fantom.createRoot();
+      const parentRef = createRef<HostInstance>();
+      const childRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={parentRef}>
+            <View
+              style={{width: 10, height: 10, left: 20, top: 20}}
+              ref={childRef}
+            />
+          </View>,
+        );
+      });
+
+      const parentNode = nullthrows(parentRef.current);
+      const childNode = nullthrows(childRef.current);
+
+      const callback = jest.fn();
+      childNode.measureLayout(parentNode, callback);
+
+      expect(callback).toHaveBeenCalledTimes(1);
+      expect(callback.mock.calls).toEqual([[20, 20, 10, 10]]);
+    });
+
+    it('unmounted.measureLayout(component, ...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const parentRef = createRef<HostInstance>();
+      const childRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={parentRef}>
+            <View
+              style={{width: 10, height: 10, left: 20, top: 20}}
+              ref={childRef}
+            />
+          </View>,
+        );
+      });
+
+      const parentNode = nullthrows(parentRef.current);
+      const childNode = nullthrows(childRef.current);
+
+      Fantom.runTask(() => {
+        root.render(
+          <View style={{width: 100, height: 100, left: 10, top: 10}} />,
+        );
+      });
+
+      const callback = jest.fn();
+      childNode.measureLayout(parentNode, callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+
+    it('component.measureLayout(unmounted, ...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const parentRef = createRef<HostInstance>();
+      const childRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={parentRef}>
+            <View
+              style={{width: 10, height: 10, left: 20, top: 20}}
+              ref={childRef}
+            />
+          </View>,
+        );
+      });
+
+      const parentNode = nullthrows(parentRef.current);
+      const childNode = nullthrows(childRef.current);
+
+      Fantom.runTask(() => {
+        root.render(
+          <View style={{width: 100, height: 100, left: 10, top: 10}} />,
+        );
+      });
+
+      const callback = jest.fn();
+      parentNode.measureLayout(childNode, callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+
+    it('unmounted.measureLayout(unmounted, ...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const parentRef = createRef<HostInstance>();
+      const childRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={parentRef}>
+            <View
+              style={{width: 10, height: 10, left: 20, top: 20}}
+              ref={childRef}
+            />
+          </View>,
+        );
+      });
+
+      const parentNode = nullthrows(parentRef.current);
+      const childNode = nullthrows(childRef.current);
+
+      Fantom.runTask(() => {
+        root.render(<></>);
+      });
+
+      const callback = jest.fn();
+      childNode.measureLayout(parentNode, callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('setNativeProps', () => {
+    it('should propagate changes to the host component', () => {
+      const root = Fantom.createRoot();
+      const nodeRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(<View ref={nodeRef} testID="first test id" />);
+      });
+
+      expect(
+        root
+          .getRenderedOutput({
+            props: ['testID'],
+          })
+          .toJSX(),
+      ).toEqual(<rn-view testID={'first test id'} />);
+
+      const element = nullthrows(nodeRef.current);
+
+      Fantom.runTask(() => {
+        element.setNativeProps({testID: 'second test id'});
+      });
+
+      expect(
+        root
+          .getRenderedOutput({
+            props: ['testID'],
+          })
+          .toJSX(),
+      ).toEqual(<rn-view testID={'second test id'} />);
+    });
+  });
+});
@@ -1,181 +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 updateRuntimeShadowNodeReferencesOnCommit:true
- * @fantom_react_fb_flags passChildrenWhenCloningPersistedNodes:true
- * @flow strict-local
- * @format
- */
-
-import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';
-
-import * as Fantom from '@react-native/fantom';
-import * as React from 'react';
-import {View} from 'react-native';
-
-describe('Render updates with passChildrenWhenCloningPersistedNodes', () => {
-  it('updates the runtime shadow node reference correctly when using sync on commit', () => {
-    const root = Fantom.createRoot();
-
-    // Initial render setting to row items next to each other
-    Fantom.runTask(() => {
-      root.render(
-        <View nativeID="parent" style={{flex: 1, flexDirection: 'row'}}>
-          <View
-            nativeID="initial-child-1"
-            key="1"
-            style={{width: 100, height: 32}}
-          />
-          <View
-            nativeID="initial-child-2"
-            key="2"
-            style={{width: 100, height: 32}}>
-            <View nativeID="sub-child-2-1" key="1" />
-          </View>
-        </View>,
-      );
-    });
-
-    // Insert new items on the row between the previous two items
-    Fantom.runTask(() => {
-      root.render(
-        <View nativeID="parent" style={{flex: 1, flexDirection: 'row'}}>
-          <View
-            nativeID="initial-child-1"
-            key="1"
-            style={{width: 100, height: 32}}
-          />
-          <View
-            nativeID="inserted-child-1"
-            key="3"
-            style={{width: 100, height: 32}}
-          />
-          <View
-            nativeID="initial-child-2"
-            key="2"
-            style={{width: 100, height: 32}}>
-            <View nativeID="sub-child-2-1" key="1" />
-          </View>
-          <View
-            nativeID="inserted-child-2"
-            key="4"
-            style={{width: 100, height: 32}}
-          />
-          <View
-            nativeID="inserted-child-3"
-            key="5"
-            style={{width: 100, height: 32}}
-          />
-        </View>,
-      );
-    });
-
-    // Update a prop on the children of the original row item to force a clone
-    Fantom.runTask(() => {
-      root.render(
-        <View nativeID="parent" style={{flex: 1, flexDirection: 'row'}}>
-          <View
-            nativeID="initial-child-1"
-            key="1"
-            style={{width: 100, height: 32}}
-          />
-          <View
-            nativeID="inserted-child-1"
-            key="3"
-            style={{width: 100, height: 32}}
-          />
-          <View
-            nativeID="initial-child-2"
-            key="2"
-            style={{width: 100, height: 32}}>
-            <View
-              nativeID="sub-child-2-1"
-              key="1"
-              testID="prop-change-to-force-clone"
-            />
-          </View>
-          <View
-            nativeID="inserted-child-2"
-            key="4"
-            style={{width: 100, height: 32}}
-          />
-          <View
-            nativeID="inserted-child-3"
-            key="5"
-            style={{width: 100, height: 32}}
-          />
-        </View>,
-      );
-    });
-
-    // The row items should all be layed out next to each other
-    expect(
-      root
-        .getRenderedOutput({
-          includeLayoutMetrics: true,
-          props: ['layoutMetrics-frame', 'nativeID'],
-        })
-        .toJSON(),
-    ).toEqual({
-      type: 'View',
-      props: {
-        'layoutMetrics-frame': '{x:0,y:0,width:390,height:844}',
-        nativeID: 'parent',
-      },
-      children: [
-        {
-          type: 'View',
-          props: {
-            'layoutMetrics-frame': '{x:0,y:0,width:100,height:32}',
-            nativeID: 'initial-child-1',
-          },
-          children: [],
-        },
-        {
-          type: 'View',
-          props: {
-            'layoutMetrics-frame': '{x:100,y:0,width:100,height:32}',
-            nativeID: 'inserted-child-1',
-          },
-          children: [],
-        },
-        {
-          type: 'View',
-          props: {
-            'layoutMetrics-frame': '{x:200,y:0,width:100,height:32}',
-            nativeID: 'initial-child-2',
-          },
-          children: [
-            {
-              type: 'View',
-              props: {
-                'layoutMetrics-frame': '{x:0,y:0,width:100,height:0}',
-                nativeID: 'sub-child-2-1',
-              },
-              children: [],
-            },
-          ],
-        },
-        {
-          type: 'View',
-          props: {
-            'layoutMetrics-frame': '{x:300,y:0,width:100,height:32}',
-            nativeID: 'inserted-child-2',
-          },
-          children: [],
-        },
-        {
-          type: 'View',
-          props: {
-            'layoutMetrics-frame': '{x:400,y:0,width:100,height:32}',
-            nativeID: 'inserted-child-3',
-          },
-          children: [],
-        },
-      ],
-    });
-  });
-});
@@ -17,12 +17,6 @@ const ReactNativeStyleAttributes =
 const resolveAssetSource = require('../Image/resolveAssetSource').default;
 const processBackgroundImage =
  require('../StyleSheet/processBackgroundImage').default;
-const processBackgroundPosition =
-  require('../StyleSheet/processBackgroundPosition').default;
-const processBackgroundRepeat =
-  require('../StyleSheet/processBackgroundRepeat').default;
-const processBackgroundSize =
-  require('../StyleSheet/processBackgroundSize').default;
 const processColor = require('../StyleSheet/processColor').default;
 const processColorArray = require('../StyleSheet/processColorArray').default;
 const processFilter = require('../StyleSheet/processFilter').default;
@@ -209,12 +203,6 @@ function getProcessorForType(typeName: string): ?(nextProp: any) => any {
      return processFilter;
    case 'BackgroundImage':
      return processBackgroundImage;
-    case 'BackgroundPosition':
-      return processBackgroundPosition;
-    case 'BackgroundRepeat':
-      return processBackgroundRepeat;
-    case 'BackgroundSize':
-      return processBackgroundSize;
    case 'ImageSource':
      return resolveAssetSource;
    case 'BoxShadow':
@@ -7,9 +7,9 @@
 * @noflow
 * @nolint
 * @preventMunge
+ * @generated SignedSource<<90e5b8f55761c6a4805052d5b49689b8>>
 *
- * This file is no longer sync'd from the facebook/react repository.
- * The version compatability check is removed. Use at your own risk.
+ * This file was sync'd from the facebook/react repository.
 */

 "use strict";
@@ -19455,6 +19455,13 @@ __DEV__ &&
    setSuspenseHandler = function (newShouldSuspendImpl) {
      shouldSuspendImpl = newShouldSuspendImpl;
    };
+    var isomorphicReactPackageVersion = React.version;
+    if ("19.2.0" !== isomorphicReactPackageVersion)
+      throw Error(
+        'Incompatible React versions: The "react" and "react-native-renderer" packages must have the exact same version. Instead got:\n  - react:                  ' +
+          (isomorphicReactPackageVersion +
+            "\n  - react-native-renderer:  19.2.0\nLearn more: https://react.dev/warnings/version-mismatch")
+      );
    if (
      "function" !==
      typeof ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog
@@ -7,9 +7,9 @@
 * @noflow
 * @nolint
 * @preventMunge
+ * @generated SignedSource<<14f9eca680f3065d18eda114fb4bea9f>>
 *
- * This file is no longer sync'd from the facebook/react repository.
- * The version compatability check is removed. Use at your own risk.
+ * This file was sync'd from the facebook/react repository.
 */

 "use strict";
@@ -10918,6 +10918,13 @@ function updateContainer(element, container, parentComponent, callback) {
    entangleTransitions(element, parentComponent, lane));
  return lane;
 }
+var isomorphicReactPackageVersion = React.version;
+if ("19.2.0" !== isomorphicReactPackageVersion)
+  throw Error(
+    'Incompatible React versions: The "react" and "react-native-renderer" packages must have the exact same version. Instead got:\n  - react:                  ' +
+      (isomorphicReactPackageVersion +
+        "\n  - react-native-renderer:  19.2.0\nLearn more: https://react.dev/warnings/version-mismatch")
+  );
 if (
  "function" !==
  typeof ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog
@@ -7,9 +7,9 @@
 * @noflow
 * @nolint
 * @preventMunge
+ * @generated SignedSource<<238b7d9e5ffe0f30b64b3b5c7c156088>>
 *
- * This file is no longer sync'd from the facebook/react repository.
- * The version compatability check is removed. Use at your own risk.
+ * This file was sync'd from the facebook/react repository.
 */

 "use strict";
@@ -12713,6 +12713,13 @@ function updateContainer(element, container, parentComponent, callback) {
    entangleTransitions(element, parentComponent, lane));
  return lane;
 }
+var isomorphicReactPackageVersion = React.version;
+if ("19.2.0" !== isomorphicReactPackageVersion)
+  throw Error(
+    'Incompatible React versions: The "react" and "react-native-renderer" packages must have the exact same version. Instead got:\n  - react:                  ' +
+      (isomorphicReactPackageVersion +
+        "\n  - react-native-renderer:  19.2.0\nLearn more: https://react.dev/warnings/version-mismatch")
+  );
 if (
  "function" !==
  typeof ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog
@@ -7,7 +7,9 @@
 * @noformat
 * @nolint
 * @flow
- * @generated SignedSource<<cf323fc5ca893bab5669c7d321660412>>
+ * @generated SignedSource<<16b364e89f43b8a47832b0dfb98af11e>>
+ *
+ * This file was sync'd from the facebook/react repository.
 */

 'use strict';
@@ -7,7 +7,9 @@
 * @noformat
 * @nolint
 * @flow strict-local
- * @generated SignedSource<<908f5fb85384725318e261f40e49d9a6>>
+ * @generated SignedSource<<1dd9e9c3f20e37ae14e485fc6ee3d9e9>>
+ *
+ * This file was sync'd from the facebook/react repository.
 */

 'use strict';
@@ -7,9 +7,9 @@
 * @noformat
 * @nolint
 * @flow
+ * @generated SignedSource<<e2c46705ed927302dbe9332dafba459d>>
 *
- * This file is no longer sync'd from the facebook/react repository.
- * The version compatability check is removed. Use at your own risk.
+ * This file was sync'd from the facebook/react repository.
 */
 'use strict';

@@ -7,7 +7,9 @@
 * @noformat
 * @nolint
 * @flow strict
- * @generated SignedSource<<c0e57723772ea5f1aa8c3c897ac3c216>>
+ * @generated SignedSource<<989e6e2e860dc2af7ba983849111bda8>>
+ *
+ * This file was sync'd from the facebook/react repository.
 */

 import type {
@@ -7,7 +7,9 @@
 * @noformat
 * @nolint
 * @flow strict-local
- * @generated SignedSource<<1f7876c0dc0b05685a730513dc410236>>
+ * @generated SignedSource<<67d18226984338ab9301147ce0a7d414>>
+ *
+ * This file was sync'd from the facebook/react repository.
 */

 'use strict';
--- a/Show More
+++ b/Show More