feat: duplicate worklets code the smart way

.github/workflows/example-android-build-check.yml

@@ -7,6 +7,7 @@ on:
       - .github/workflows/example-android-build-check.yml
       - packages/react-native-reanimated/android/**
       - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
       - apps/fabric-example/package.json
       - apps/fabric-example/android/**
   merge_group:
@@ -19,19 +20,32 @@ on:
       - .github/workflows/example-android-build-check.yml
       - packages/react-native-reanimated/android/**
       - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
       - apps/fabric-example/package.json
       - apps/fabric-example/android/**
   workflow_call:
+    inputs:
+      use-external-worklets:
+        required: false
+        type: boolean
+        default: false
   workflow_dispatch:
+    inputs:
+      use-external-worklets:
+        required: false
+        type: boolean
+        default: false
 
 jobs:
   build:
     if: github.repository == 'software-mansion/react-native-reanimated'
     runs-on: ubuntu-latest
     env:
       WORKING_DIRECTORY: apps/fabric-example
+      COMMON_APP_DIR: apps/common-app
+      REANIMATED_DIR: packages/react-native-reanimated
     concurrency:
-      group: android-${{ github.ref }}
+      group: android-${{ github.ref }}-${{ inputs.use-external-worklets }}
       cancel-in-progress: true
     steps:
       - name: Check out Git repository
@@ -46,6 +60,14 @@ jobs:
       # TODO: Add caching for node_modules and artifacts that will work with monorepo setup.
       - name: Install monorepo node dependencies
         run: yarn install --immutable
+      - name: Build Reanimated package
+        working-directory: ${{ env.REANIMATED_DIR }}
+        run: yarn build
+
+      - name: Use external worklets
+        if: ${{ inputs.use-external-worklets == 'true' }}
+        working-directory: ${{ env.COMMON_APP_DIR }}
+        run: yarn add react-native-worklets@workspace:"*"
 
       - name: Build app
         working-directory: ${{ env.WORKING_DIRECTORY }}/android

.github/workflows/example-ios-build-check.yml

@@ -9,6 +9,7 @@ on:
       - packages/react-native-reanimated/scripts/reanimated_utils.rb
       - packages/react-native-reanimated/apple/**
       - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
       - apps/fabric-example/package.json
       - apps/fabric-example/ios/**
   merge_group:
@@ -23,19 +24,32 @@ on:
       - packages/react-native-reanimated/scripts/reanimated_utils.rb
       - packages/react-native-reanimated/apple/**
       - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
       - apps/fabric-example/package.json
       - apps/fabric-example/ios/**
   workflow_call:
+    inputs:
+      use-external-worklets:
+        required: false
+        type: boolean
+        default: false
   workflow_dispatch:
+    inputs:
+      use-external-worklets:
+        required: false
+        type: boolean
+        default: false
 
 jobs:
   build:
     if: github.repository == 'software-mansion/react-native-reanimated'
     runs-on: macos-14
     env:
       WORKING_DIRECTORY: apps/fabric-example
+      COMMON_APP_DIR: apps/common-app
+      REANIMATED_DIR: packages/react-native-reanimated
     concurrency:
-      group: ios-${{ github.ref }}
+      group: ios-${{ github.ref }}-${{ inputs.use-external-worklets }}
       cancel-in-progress: true
     steps:
       - name: Check out Git repository
@@ -47,6 +61,15 @@ jobs:
 
       - name: Install monorepo node dependencies
         run: yarn install --immutable
+      - name: Build Reanimated package
+        working-directory: ${{ env.REANIMATED_DIR }}
+        run: yarn build
+
+      - name: Use external worklets
+        if: ${{ inputs.use-external-worklets == 'true' }}
+        working-directory: ${{ env.COMMON_APP_DIR }}
+        run: yarn add react-native-worklets@workspace:"*"
+
       # TODO: Add caching for node_modules and artifacts that will work with monorepo setup.
       - name: Install Pods
         working-directory: ${{ env.WORKING_DIRECTORY }}/ios

.github/workflows/example-macos-build-check.yml

@@ -9,6 +9,7 @@ on:
       - packages/react-native-reanimated/scripts/reanimated_utils.rb
       - packages/react-native-reanimated/apple/**
       - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
       - apps/macos-example/package.json
       - apps/macos-example/ios/**
       - apps/macos-example/macos/**
@@ -24,20 +25,33 @@ on:
       - packages/react-native-reanimated/scripts/reanimated_utils.rb
       - packages/react-native-reanimated/apple/**
       - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
       - apps/macos-example/package.json
       - apps/macos-example/ios/**
       - apps/macos-example/macos/**
   workflow_call:
+    inputs:
+      use-external-worklets:
+        required: false
+        type: boolean
+        default: false
   workflow_dispatch:
+    inputs:
+      use-external-worklets:
+        required: false
+        type: boolean
+        default: false
 
 jobs:
   build:
     if: github.repository == 'software-mansion/react-native-reanimated'
     runs-on: macos-14
     env:
       WORKING_DIRECTORY: apps/macos-example
+      COMMON_APP_DIR: apps/common-app
+      REANIMATED_DIR: packages/react-native-reanimated
     concurrency:
-      group: macos-${{ github.ref }}
+      group: macos-${{ github.ref }}-${{ inputs.use-external-worklets }}
       cancel-in-progress: true
     steps:
       - name: Check out Git repository
@@ -50,6 +64,14 @@ jobs:
       # TODO: Add caching for node_modules and artifacts that will work with monorepo setup.
       - name: Install monorepo node dependencies
         run: yarn install --immutable
+      - name: Build Reanimated package
+        working-directory: ${{ env.REANIMATED_DIR }}
+        run: yarn build
+
+      - name: Use external worklets
+        if: ${{ inputs.use-external-worklets == 'true' }}
+        working-directory: ${{ env.COMMON_APP_DIR }}
+        run: yarn add react-native-worklets@workspace:"*"
 
       - name: Install Pods
         working-directory: ${{ env.WORKING_DIRECTORY }}/macos

.github/workflows/example-tvos-build-check.yml

@@ -9,8 +9,7 @@ on:
       - packages/react-native-reanimated/scripts/reanimated_utils.rb
       - packages/react-native-reanimated/apple/**
       - packages/react-native-reanimated/Common/**
-      - packages/react-native-reanimated/TVOSExample/package.json
-      - packages/react-native-reanimated/TVOSExample/ios/**
+      - packages/react-native-worklets/**
   merge_group:
     branches:
       - main
@@ -23,19 +22,30 @@ on:
       - packages/react-native-reanimated/scripts/reanimated_utils.rb
       - packages/react-native-reanimated/apple/**
       - packages/react-native-reanimated/Common/**
-      - packages/react-native-reanimated/TVOSExample/package.json
-      - packages/react-native-reanimated/TVOSExample/ios/**
+      - packages/react-native-worklets/**
   workflow_call:
+    inputs:
+      use-external-worklets:
+        required: false
+        type: boolean
+        default: false
   workflow_dispatch:
+    inputs:
+      use-external-worklets:
+        required: false
+        type: boolean
+        default: false
 
 jobs:
   build:
     if: github.repository == 'software-mansion/react-native-reanimated'
     runs-on: macos-14
     env:
       WORKING_DIRECTORY: apps/tvos-example
+      COMMON_APP_DIR: apps/common-app
+      REANIMATED_DIR: packages/react-native-reanimated
     concurrency:
-      group: tvos-${{ github.ref }}
+      group: tvos-${{ github.ref }}-${{ inputs.use-external-worklets }}
       cancel-in-progress: true
     steps:
       - name: Check out Git repository
@@ -47,14 +57,14 @@ jobs:
 
       - name: Install monorepo node dependencies
         run: yarn install --immutable
-      # TODO: Add caching for node_modules and artifacts that will work with monorepo setup.
-      - name: Install Reanimated node_modules
-        working-directory: packages/react-native-reanimated
-        run: yarn install --immutable
+      - name: Build Reanimated package
+        working-directory: ${{ env.REANIMATED_DIR }}
+        run: yarn build
 
-      - name: Install app node_modules
-        working-directory: ${{ env.WORKING_DIRECTORY }}
-        run: yarn install --immutable
+      - name: Use external worklets
+        if: ${{ inputs.use-external-worklets == 'true' }}
+        working-directory: ${{ env.COMMON_APP_DIR }}
+        run: yarn add react-native-worklets@workspace:"*"
 
       - name: Install Pods
         working-directory: ${{ env.WORKING_DIRECTORY }}/ios

.github/workflows/reanimated-android-validation.yml

@@ -34,6 +34,8 @@ jobs:
     concurrency:
       group: validate-java-${{ github.ref }}
       cancel-in-progress: true
+    env:
+      REANIMATED_DIR: packages/react-native-reanimated
     steps:
       - name: checkout
         uses: actions/checkout@v4
@@ -62,7 +64,10 @@ jobs:
 
       - name: Install monorepo node dependencies
         run: yarn install --immutable
+      - name: Build Reanimated package
+        working-directory: ${{ env.REANIMATED_DIR }}
+        run: yarn build
 
       - name: Lint Android
-        working-directory: packages/react-native-reanimated
+        working-directory: ${{ env.REANIMATED_DIR }}
         run: yarn lint:android

.github/workflows/reanimated-apple-validation.yml

@@ -29,13 +29,18 @@ on:
 jobs:
   check:
     if: github.repository == 'software-mansion/react-native-reanimated'
+    env:
+      REANIMATED_DIR: packages/react-native-reanimated
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
       - name: Install monorepo node dependencies
         run: yarn install --immutable
+      - name: Build Reanimated package
+        working-directory: ${{ env.REANIMATED_DIR }}
+        run: yarn build
 
       - name: Lint apple
-        working-directory: packages/react-native-reanimated
+        working-directory: ${{ env.REANIMATED_DIR }}
         run: yarn lint:apple

.github/workflows/reanimated-common-validation.yml

@@ -28,7 +28,8 @@ jobs:
     strategy:
       matrix:
         python-version: [3.13]
-
+    env:
+      REANIMATED_DIR: packages/react-native-reanimated
     steps:
       - uses: actions/checkout@v4
 
@@ -42,11 +43,15 @@ jobs:
           pip install cpplint==1.6.1
       - name: Install monorepo node dependencies
         run: yarn install --immutable
+      - name: Build Reanimated
+        working-directory: ${{ env.REANIMATED_DIR }}
+        run: yarn build
 
       - name: Lint Common
-        working-directory: packages/react-native-reanimated
+        working-directory: ${{ env.REANIMATED_DIR }}
         run: yarn lint:common
 
       - name: Disallow DEBUG macros
+        working-directory: ${{ env.REANIMATED_DIR }}
         run: |
-          ! egrep -r '(#if DEBUG|#ifdef DEBUG)' packages/react-native-reanimated/Common/cpp/ packages/react-native-reanimated/apple/ packages/react-native-reanimated/android/src/main/cpp/
+          ! egrep -r '(#if DEBUG|#ifdef DEBUG)' Common/cpp/ apple/ android/src/main/cpp/

.github/workflows/worklets-reanimated-android-compilation-checks.yml

@@ -0,0 +1,30 @@
+name: Worklets & Reanimated Android compilation checks
+env:
+  YARN_ENABLE_HARDENED_MODE: 0
+on:
+  pull_request:
+    paths:
+      - .github/workflows/worklets-reanimated-android-compilation-checks.yml
+      - packages/react-native-reanimated/android/**
+      - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
+  merge_group:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+    paths:
+      - .github/workflows/worklets-reanimated-android-compilation-checks.yml
+      - packages/react-native-reanimated/android/**
+      - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
+  workflow_call:
+  workflow_dispatch:
+
+jobs:
+  android-with-external-worklets-build:
+    if: github.repository == 'software-mansion/react-native-reanimated'
+    uses: ./.github/workflows/example-android-build-check.yml
+    with:
+      use-external-worklets: true

.github/workflows/worklets-reanimated-apple-compilation-checks.yml

@@ -0,0 +1,42 @@
+name: Worklets & Reanimated Apple compilation checks
+env:
+  YARN_ENABLE_HARDENED_MODE: 0
+on:
+  pull_request:
+    paths:
+      - .github/workflows/worklets-reanimated-apple-compilation-checks.yml
+      - packages/react-native-reanimated/apple/**
+      - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
+  merge_group:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+    paths:
+      - .github/workflows/worklets-reanimated-apple-compilation-checks.yml
+      - packages/react-native-reanimated/apple/**
+      - packages/react-native-reanimated/Common/**
+      - packages/react-native-worklets/**
+  workflow_call:
+  workflow_dispatch:
+
+jobs:
+  ios-with-external-worklets-build:
+    if: github.repository == 'software-mansion/react-native-reanimated'
+    uses: ./.github/workflows/example-ios-build-check.yml
+    with:
+      use-external-worklets: true
+
+  macos-with-external-worklets-build:
+    if: github.repository == 'software-mansion/react-native-reanimated'
+    uses: ./.github/workflows/example-macos-build-check.yml
+    with:
+      use-external-worklets: true
+
+  tvos-with-external-worklets-build:
+    if: github.repository == 'software-mansion/react-native-reanimated'
+    uses: ./.github/workflows/example-tvos-build-check.yml
+    with:
+      use-external-worklets: true