module-federation · jbroma · Apr 10, 2026 · Apr 10, 2026 · Apr 10, 2026 · Apr 10, 2026
diff --git a/.changeset/add-metro-plugin-rock.md b/.changeset/add-metro-plugin-rock.md
@@ -0,0 +1,5 @@
+---
+'@module-federation/metro-plugin-rock': minor
+---
+
+feat(metro): add metro-plugin-rock for Rock integration
diff --git a/.changeset/config.json b/.changeset/config.json
@@ -34,6 +34,7 @@
       "@module-federation/treeshake-frontend",
       "@module-federation/metro",
       "@module-federation/metro-plugin-rnef",
+      "@module-federation/metro-plugin-rock",
       "@module-federation/metro-plugin-rnc-cli"
     ]
   ],

diff --git a/.changeset/deprecate-metro-plugin-rnef.md b/.changeset/deprecate-metro-plugin-rnef.md
@@ -0,0 +1,5 @@
+---
+'@module-federation/metro-plugin-rnef': patch
+---
+
+chore(metro): deprecate metro-plugin-rnef in favor of metro-plugin-rock
diff --git a/.github/workflows/e2e-metro.yml b/.github/workflows/e2e-metro.yml
@@ -63,6 +63,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     env:
+      NO_COLOR: 1
       ANDROID_EMULATOR_API_LEVEL: 28
       ANDROID_EMULATOR_TARGET: default
       ANDROID_EMULATOR_ARCH: x86_64
@@ -121,15 +122,17 @@ jobs:
           echo "${HOME}/.maestro/bin" >> "$GITHUB_PATH"
         shell: bash
 
-      - name: Configure RNEF cache auth
+      - name: Configure Rock cache auth
         shell: bash
         run: |
-          RNEF_PATH="apps/metro-${{ env.METRO_APP_NAME }}/.rnef/cache"
-          mkdir -p "$RNEF_PATH"
-          echo "{\"githubToken\": \"${{ secrets.GITHUB_TOKEN }}\"}" > "$RNEF_PATH/project.json"
-
-      - name: Build Metro Android app (RNEF action)
-        uses: callstackincubator/android@v1
+          ROCK_PATH="apps/metro-${{ env.METRO_APP_NAME }}/.rock/cache"
+          mkdir -p "$ROCK_PATH"
+          echo "{\"githubToken\": \"${{ secrets.GITHUB_TOKEN }}\"}" > "$ROCK_PATH/project.json"
+
+      # TODO: working-directory not propagated to all steps in upstream action
+      # https://github.com/callstackincubator/android/pull/25
+      - name: Build Metro Android app (Rock action)
+        uses: callstackincubator/android@v3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           comment-bot: false
@@ -152,7 +155,7 @@ jobs:
           disable-animations: true
           emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
           script: |
-            node tools/scripts/run-metro-e2e.mjs --platform=android --appName=${{ env.METRO_APP_NAME }} --skip-rnef-cache-auth
+            node tools/scripts/run-metro-e2e.mjs --platform=android --appName=${{ env.METRO_APP_NAME }} --skip-rock-cache-auth
 
       - name: Upload Android Maestro logs on failure
         if: failure()
@@ -167,6 +170,7 @@ jobs:
     runs-on: macos-latest
     timeout-minutes: 60
     env:
+      NO_COLOR: 1
       RUBY_VERSION: 2.7.6
       MAESTRO_VERSION: 1.39.13
       MAESTRO_DRIVER_STARTUP_TIMEOUT: 600000
@@ -221,15 +225,17 @@ jobs:
           echo "${HOME}/.maestro/bin" >> "$GITHUB_PATH"
         shell: bash
 
-      - name: Configure RNEF cache auth
+      - name: Configure Rock cache auth
         shell: bash
         run: |
-          RNEF_PATH="apps/metro-${{ env.METRO_APP_NAME }}/.rnef/cache"
-          mkdir -p "$RNEF_PATH"
-          echo "{\"githubToken\": \"${{ secrets.GITHUB_TOKEN }}\"}" > "$RNEF_PATH/project.json"
-
-      - name: Build Metro iOS app (RNEF action)
-        uses: callstackincubator/ios@v1
+          ROCK_PATH="apps/metro-${{ env.METRO_APP_NAME }}/.rock/cache"
+          mkdir -p "$ROCK_PATH"
+          echo "{\"githubToken\": \"${{ secrets.GITHUB_TOKEN }}\"}" > "$ROCK_PATH/project.json"
+
+      # TODO: working-directory not propagated to all steps in upstream action
+      # https://github.com/callstackincubator/ios/pull/27
+      - name: Build Metro iOS app (Rock action)
+        uses: callstackincubator/ios@v3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           comment-bot: false
@@ -241,7 +247,7 @@ jobs:
       - name: Run Metro iOS E2E tests
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: node tools/scripts/run-metro-e2e.mjs --platform=ios --appName=${{ env.METRO_APP_NAME }} --skip-rnef-cache-auth
+        run: node tools/scripts/run-metro-e2e.mjs --platform=ios --appName=${{ env.METRO_APP_NAME }} --skip-rock-cache-auth
         shell: bash
 
       - name: Upload iOS Maestro logs on failure

diff --git a/AGENTS.md b/AGENTS.md
@@ -152,13 +152,13 @@ pnpm run build:packages
 - Metro tests:
 
 ```bash
-pnpm exec turbo run test --filter=@module-federation/metro --filter=@module-federation/metro-plugin-rnef --filter=@module-federation/metro-plugin-rnc-cli
+pnpm exec turbo run test --filter=@module-federation/metro --filter=@module-federation/metro-plugin-rnef --filter=@module-federation/metro-plugin-rock --filter=@module-federation/metro-plugin-rnc-cli
 ```
 
 - Metro lint:
 
 ```bash
-pnpm exec turbo run lint --filter=@module-federation/metro --filter=@module-federation/metro-plugin-rnef --filter=@module-federation/metro-plugin-rnc-cli
+pnpm exec turbo run lint --filter=@module-federation/metro --filter=@module-federation/metro-plugin-rnef --filter=@module-federation/metro-plugin-rock --filter=@module-federation/metro-plugin-rnc-cli
 ```
 
 ### E2E Parity via Local CI Runner

diff --git a/apps/metro-example-host/.gitignore b/apps/metro-example-host/.gitignore
@@ -77,5 +77,6 @@ yarn-error.log
 # build artifacts
 dist/
 
-# RNEF
+# Rock
+.rock
 .rnef
diff --git a/apps/metro-example-host/Gemfile.lock b/apps/metro-example-host/Gemfile.lock
@@ -2,27 +2,28 @@ GEM
   remote: https://rubygems.org/
   specs:
     CFPropertyList (3.0.9)
-    activesupport (7.2.3.1)
+    activesupport (7.1.6)
       base64
       benchmark (>= 0.3)
       bigdecimal
-      concurrent-ruby (~> 1.0, >= 1.3.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
       connection_pool (>= 2.2.5)
       drb
       i18n (>= 1.6, < 2)
       logger (>= 1.4.2)
-      minitest (>= 5.1, < 6)
+      minitest (>= 5.1)
+      mutex_m
       securerandom (>= 0.3)
-      tzinfo (~> 2.0, >= 2.0.5)
-    addressable (2.8.8)
+      tzinfo (~> 2.0)
+    addressable (2.9.0)
       public_suffix (>= 2.0.2, < 8.0)
     algoliasearch (1.27.5)
       httpclient (~> 2.8, >= 2.8.3)
       json (>= 1.5.1)
     atomos (0.1.3)
     base64 (0.3.0)
     benchmark (0.5.0)
-    bigdecimal (4.0.1)
+    bigdecimal (4.1.1)
     claide (1.1.0)
     cocoapods (1.15.2)
       addressable (~> 2.8)
@@ -63,22 +64,23 @@ GEM
     cocoapods-try (1.2.0)
     colored2 (3.1.2)
     concurrent-ruby (1.3.3)
-    connection_pool (3.0.2)
+    connection_pool (2.5.5)
     drb (2.2.3)
     escape (0.0.4)
-    ethon (0.15.0)
+    ethon (0.18.0)
       ffi (>= 1.15.0)
-    ffi (1.17.3)
+      logger
+    ffi (1.17.4)
     fourflusher (2.3.1)
     fuzzy_match (2.0.4)
     gh_inspector (1.1.3)
     httpclient (2.9.0)
       mutex_m
     i18n (1.14.8)
       concurrent-ruby (~> 1.0)
-    json (2.18.1)
+    json (2.19.3)
     logger (1.7.0)
-    minitest (5.27.0)
+    minitest (5.26.1)
     molinillo (0.8.0)
     mutex_m (0.3.0)
     nanaimo (0.3.0)
@@ -87,9 +89,9 @@ GEM
     public_suffix (4.0.7)
     rexml (3.4.4)
     ruby-macho (2.5.1)
-    securerandom (0.4.1)
-    typhoeus (1.5.0)
-      ethon (>= 0.9.0, < 0.16.0)
+    securerandom (0.3.2)
+    typhoeus (1.6.0)
+      ethon (>= 0.18.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     xcodeproj (1.25.1)

diff --git a/apps/metro-example-host/android/app/build.gradle b/apps/metro-example-host/android/app/build.gradle
@@ -15,7 +15,7 @@ react {
     //   The folder where the react-native Codegen package is. Default is ../../node_modules/@react-native/codegen
     codegenDir = file("../../../../node_modules/@react-native/codegen")
     //   The cli.js file which is the React Native CLI entrypoint. Default is ../../node_modules/react-native/cli.js
-    cliFile = file("../../node_modules/@rnef/cli/dist/src/bin.js")
+    cliFile = file("../../node_modules/rock/dist/src/bin.js")
 
     /* Variants */
     //   The list of variants to that are debuggable. For those we're going to

diff --git a/apps/metro-example-host/android/settings.gradle b/apps/metro-example-host/android/settings.gradle
@@ -1,6 +1,6 @@
 pluginManagement { includeBuild("../node_modules/@react-native/gradle-plugin") }
 plugins { id("com.facebook.react.settings") }
-extensions.configure(com.facebook.react.ReactSettingsExtension){ ex -> ex.autolinkLibrariesFromCommand(['npx', 'rnef', 'config', '-p', 'android']) }
+extensions.configure(com.facebook.react.ReactSettingsExtension){ ex -> ex.autolinkLibrariesFromCommand(['npx', 'rock', 'config', '-p', 'android']) }
 rootProject.name = "MFExampleHost"
 include ':app'
 includeBuild('../node_modules/@react-native/gradle-plugin')
diff --git a/apps/metro-example-host/ios/MFExampleHost.xcodeproj/project.pbxproj b/apps/metro-example-host/ios/MFExampleHost.xcodeproj/project.pbxproj
@@ -181,7 +181,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "set -e\nif [[ -f \"$PODS_ROOT/../.xcode.env\" ]]; then\nsource \"$PODS_ROOT/../.xcode.env\"\nfi\nif [[ -f \"$PODS_ROOT/../.xcode.env.local\" ]]; then\nsource \"$PODS_ROOT/../.xcode.env.local\"\nfi\nexport BUNDLE_COMMAND=\"bundle-mf-host\"\nexport CONFIG_CMD=\"dummy-workaround-value\"\nexport CLI_PATH=\"$(\"$NODE_BINARY\" --print \"require('path').dirname(require.resolve('@rnef/cli/package.json')) + '/dist/src/bin.js'\")\"\nWITH_ENVIRONMENT=\"$REACT_NATIVE_PATH/scripts/xcode/with-environment.sh\"\nREACT_NATIVE_XCODE=\"$REACT_NATIVE_PATH/scripts/react-native-xcode.sh\"\n\n/bin/sh -c \"$WITH_ENVIRONMENT $REACT_NATIVE_XCODE\"\n";
+			shellScript = "set -e\nif [[ -f \"$PODS_ROOT/../.xcode.env\" ]]; then\nsource \"$PODS_ROOT/../.xcode.env\"\nfi\nif [[ -f \"$PODS_ROOT/../.xcode.env.local\" ]]; then\nsource \"$PODS_ROOT/../.xcode.env.local\"\nfi\nexport BUNDLE_COMMAND=\"bundle-mf-host\"\nexport CONFIG_CMD=\"dummy-workaround-value\"\nexport CLI_PATH=\"$(\"$NODE_BINARY\" --print \"require('path').dirname(require.resolve('rock/package.json')) + '/dist/src/bin.js'\")\"\nWITH_ENVIRONMENT=\"$REACT_NATIVE_PATH/scripts/xcode/with-environment.sh\"\nREACT_NATIVE_XCODE=\"$REACT_NATIVE_PATH/scripts/react-native-xcode.sh\"\n\n/bin/sh -c \"$WITH_ENVIRONMENT $REACT_NATIVE_XCODE\"\n";
 		};
 		00EEFC60759A1932668264C0 /* [CP] Embed Pods Frameworks */ = {
 			isa = PBXShellScriptBuildPhase;

diff --git a/apps/metro-example-host/ios/Podfile b/apps/metro-example-host/ios/Podfile
@@ -15,7 +15,7 @@ if linkage != nil
 end
 
 target 'MFExampleHost' do
-  config = use_native_modules!(['npx', 'rnef', 'config', '-p', 'ios'])
+  config = use_native_modules!(['npx', 'rock', 'config', '-p', 'ios'])
 
   use_react_native!(
     :path => config[:reactNativePath],

diff --git a/apps/metro-example-host/ios/Podfile.lock b/apps/metro-example-host/ios/Podfile.lock
@@ -2422,11 +2422,11 @@ SPEC CHECKSUMS:
   React-timing: a275a1c2e6112dba17f8f7dd496d439213bbea0d
   React-utils: 449a6e1fd53886510e284e80bdbb1b1c6db29452
   ReactAppDependencyProvider: 3267432b637c9b38e86961b287f784ee1b08dde0
-  ReactCodegen: 2539080349c02b1edbf525d0a392df99f984f34b
+  ReactCodegen: 7b0bacf7557bfaf82e2ea8a24903b7e0e15d4840
   ReactCommon: b028d09a66e60ebd83ca59d8cc9a1216360db147
   SocketRocket: d4aabe649be1e368d1318fdf28a022d714d65748
   Yoga: 395b5d614cd7cbbfd76b05d01bd67230a6ad004e
 
-PODFILE CHECKSUM: d7ddd7fd39d49e0dd5d1205cb5dc83483092e5fb
+PODFILE CHECKSUM: f7c15fdb9b5b2df0ae134c62754cc4c92ec20ff0
 
 COCOAPODS: 1.15.2
diff --git a/apps/metro-example-host/package.json b/apps/metro-example-host/package.json
@@ -3,13 +3,13 @@
   "version": "0.0.1",
   "private": true,
   "scripts": {
-    "android": "rnef run:android",
-    "ios": "rnef run:ios",
-    "android:release": "rnef run:android --variant 'Release'",
-    "ios:release": "rnef run:ios --configuration 'Release' --destination=\"simulator\"",
+    "android": "rock run:android",
+    "ios": "rock run:ios",
+    "android:release": "rock run:android --variant 'Release'",
+    "ios:release": "rock run:ios --configuration 'Release' --destination=\"simulator\"",
     "lint": "ESLINT_USE_FLAT_CONFIG=false eslint .",
     "dev": "nodemon --config ../../nodemon.json --exec NODE_OPTIONS='--conditions=dev' pnpm start",
-    "start": "rnef start --reset-cache --client-logs",
+    "start": "rock start --reset-cache --client-logs",
     "pods": "(cd ios && bundle install && (bundle exec pod install || bundle exec pod update))",
     "test": "jest",
     "adbreverse": "pnpm --filter example-mini --filter example-nested-mini run adbreverse",
@@ -30,17 +30,18 @@
     "@babel/preset-env": "^7.25.3",
     "@babel/runtime": "^7.25.0",
     "@module-federation/metro": "workspace:*",
-    "@module-federation/metro-plugin-rnef": "workspace:*",
+    "@module-federation/metro-plugin-rock": "workspace:*",
     "@module-federation/runtime": "workspace:*",
     "@react-native/babel-preset": "0.80.0",
     "@react-native/eslint-config": "0.80.0",
     "@react-native/gradle-plugin": "0.80.0",
     "@react-native/metro-config": "0.80.0",
     "@react-native/typescript-config": "0.80.0",
-    "@rnef/cli": "^0.7.25",
-    "@rnef/platform-android": "^0.7.25",
-    "@rnef/platform-ios": "^0.7.25",
-    "@rnef/plugin-metro": "^0.7.25",
+    "rock": "^0.13.0",
+    "@rock-js/platform-android": "^0.13.0",
+    "@rock-js/platform-ios": "^0.13.0",
+    "@rock-js/plugin-metro": "^0.13.0",
+    "@rock-js/provider-github": "^0.13.0",
     "@types/jest": "^29.5.13",
     "@types/lodash": "^4",
     "@types/react": "^19.1.0",

diff --git a/apps/metro-example-host/rnef.config.mjs b/apps/metro-example-host/rnef.config.mjs
diff --git a/apps/metro-example-host/rock.config.mjs b/apps/metro-example-host/rock.config.mjs
@@ -0,0 +1,17 @@
+// @ts-check
+import {pluginMetroModuleFederation} from '@module-federation/metro-plugin-rock';
+import {platformAndroid} from '@rock-js/platform-android';
+import {platformIOS} from '@rock-js/platform-ios';
+import {pluginMetro} from '@rock-js/plugin-metro';
+import {providerGitHub} from '@rock-js/provider-github';
+
+/** @type {import('rock').Config} */
+export default {
+  bundler: pluginMetro(),
+  platforms: {
+    ios: platformIOS(),
+    android: platformAndroid(),
+  },
+  remoteCacheProvider: providerGitHub(),
+  plugins: [pluginMetroModuleFederation()],
+};
diff --git a/apps/metro-example-mini/.gitignore b/apps/metro-example-mini/.gitignore
@@ -77,5 +77,6 @@ yarn-error.log
 # build artifacts
 dist/
 
-# RNEF
+# Rock
+.rock
 .rnef
-Original file line number
+Diff line change
@@ Expand Up / @@ -77,5 +77,6 @@ yarn-error.log @@
     # build artifacts
     dist/
-    # RNEF
+    # Rock
+    .rock
     .rnef