feat(infra-2854): add cross-platform build caching

.depcheckrc.yml

@@ -29,6 +29,8 @@ ignores:
   # Appium drivers are used by Appwright for mobile automation
   - 'appium-uiautomator2-driver'
   - 'appium-xcuitest-driver'
+  # Used in scripts/repack-android-e2e.js for CI optimization
+  - '@expo/repack-app'
 
   # Note: Everything below this line should be removed after investigation
   # TODO: Investigate each dependency to see whether it's used

.fingerprintignore

@@ -0,0 +1,39 @@
+# Ignore scripts directory - changes here don't affect native builds
+scripts/**/*
+
+# Ignore CI/CD and workflow files
+.github/**/*
+
+# Ignore documentation and markdown files
+*.md
+docs/**/*
+LICENSE
+attribution.txt
+
+# Ignore workflow files
+**/*.yml
+
+# Ignore SonarQube config
+sonar-project.properties
+
+# Ignore test files that don't affect native builds
+**/*.test.js
+**/*.test.ts
+**/*.test.tsx
+**/*.spec.js
+**/*.spec.ts
+**/*.spec.tsx
+
+# Ignore e2e test files
+e2e/**/*
+wdio/**/*
+
+# Ignore linting and formatting configs
+.eslintrc*
+.prettierrc*
+.eslintignore
+.prettierignore
+
+# Ignore yarn/npm lock files for stability
+yarn.lock
+package-lock.json

.github/workflows/build-android-e2e.yml

@@ -26,7 +26,7 @@ jobs:
       apk-uploaded: ${{ steps.upload-apk.outcome == 'success' }}
       aab-uploaded: ${{ steps.upload-aab.outcome == 'success' }}
       sourcemap-uploaded: ${{ steps.upload-sourcemap.outcome == 'success' }}
-    
+
     steps:
       - name: Checkout repo
         uses: actions/checkout@v4
@@ -60,7 +60,29 @@ jobs:
             echo "🚀 Setting up project..."
             yarn setup:github-ci --no-build-ios
 
+      # Generate fingerprint AFTER setup but BEFORE any build modifications
+      - name: Generate current fingerprint
+        id: generate-fingerprint
+        run: |
+          FINGERPRINT=$(yarn -s fingerprint:generate)
+          echo "fingerprint=$FINGERPRINT" >> "$GITHUB_OUTPUT"
+          echo "Current fingerprint: ${FINGERPRINT}"
+
+      - name: Check and restore cached APKs
+        id: cache-restore
+        uses: actions/cache@v4
+        with:
+          path: |
+            android/app/build/outputs/apk/prod/release/app-prod-release.apk
+            android/app/build/outputs/apk/androidTest/prod/release/app-prod-release-androidTest.apk
+            android/app/build/outputs/bundle/prodRelease/app-prod-release.aab
+          key: android-apk-${{ steps.generate-fingerprint.outputs.fingerprint }}
+          restore-keys: |
+            android-apk-${{ steps.generate-fingerprint.outputs.fingerprint }}
+            android-apk-
+
       - name: Build Android E2E APKs
+        if: ${{ steps.cache-restore.outputs.cache-hit != 'true' }}
         run: |
           echo "🏗 Building Android E2E APKs..."
           export NODE_OPTIONS="--max-old-space-size=8192"
@@ -103,6 +125,71 @@ jobs:
           GOOGLE_SERVICES_B64_ANDROID: ${{ secrets.GOOGLE_SERVICES_B64_ANDROID }}
           MM_INFURA_PROJECT_ID: ${{ secrets.MM_INFURA_PROJECT_ID }}
 
+      - name: Repack APK with JS updates using @expo/repack-app
+        if: ${{ steps.cache-restore.outputs.cache-hit == 'true' }}
+        run: |
+          echo "📦 Repacking APK with updated JavaScript bundle using @expo/repack-app..."
+
+          # Use the optimized repack script which uses @expo/repack-app
+          yarn repack:android
+
+          # Verify the repacked APK exists
+          APK_PATH="android/app/build/outputs/apk/prod/release/app-prod-release.apk"
+          if [ ! -f "$APK_PATH" ]; then
+            echo "❌ Error: APK not found at $APK_PATH after repack"
+            exit 1
+          fi
+
+          echo "✅ APK successfully repacked with @expo/repack-app"
+          echo "📦 Final APK size: $(du -h "$APK_PATH" | cut -f1)"
+
+        env:
+          # Pass ALL the same environment variables as the original build to ensure identical JS bundle
+          PLATFORM: android
+          METAMASK_ENVIRONMENT: qa
+          METAMASK_BUILD_TYPE: main
+          IS_TEST: true
+          E2E: "true"
+          IGNORE_BOXLOGS_DEVELOPMENT: true
+          GITHUB_CI: "true"
+          CI: "true"
+          NODE_OPTIONS: "--max-old-space-size=8192"
+          MM_UNIFIED_SWAPS_ENABLED: "true"
+          MM_BRIDGE_ENABLED: "true"
+          BRIDGE_USE_DEV_APIS: "true"
+          RAMP_INTERNAL_BUILD: "true"
+          SEEDLESS_ONBOARDING_ENABLED: "true"
+          MM_NOTIFICATIONS_UI_ENABLED: "true"
+          MM_SECURITY_ALERTS_API_ENABLED: "true"
+          MM_REMOVE_GLOBAL_NETWORK_SELECTOR: "true"
+          BLOCKAID_FILE_CDN: "static.cx.metamask.io/api/v1/confirmations/ppom"
+          FEATURES_ANNOUNCEMENTS_ACCESS_TOKEN: ${{ secrets.FEATURES_ANNOUNCEMENTS_ACCESS_TOKEN }}
+          FEATURES_ANNOUNCEMENTS_SPACE_ID: ${{ secrets.FEATURES_ANNOUNCEMENTS_SPACE_ID }}
+          SEGMENT_WRITE_KEY_QA: ${{ secrets.SEGMENT_WRITE_KEY_QA }}
+          SEGMENT_PROXY_URL_QA: ${{ secrets.SEGMENT_PROXY_URL_QA }}
+          SEGMENT_DELETE_API_SOURCE_ID_QA: ${{ secrets.SEGMENT_DELETE_API_SOURCE_ID_QA }}
+          SEGMENT_REGULATIONS_ENDPOINT_QA: ${{ secrets.SEGMENT_REGULATIONS_ENDPOINT_QA }}
+          MM_SENTRY_DSN_TEST: ${{ secrets.MM_SENTRY_DSN_TEST }}
+          MM_SENTRY_AUTH_TOKEN: ${{ secrets.MM_SENTRY_AUTH_TOKEN }}
+          MAIN_IOS_GOOGLE_CLIENT_ID_UAT: ${{ secrets.MAIN_IOS_GOOGLE_CLIENT_ID_UAT }}
+          MAIN_IOS_GOOGLE_REDIRECT_URI_UAT: ${{ secrets.MAIN_IOS_GOOGLE_REDIRECT_URI_UAT }}
+          MAIN_ANDROID_APPLE_CLIENT_ID_UAT: ${{ secrets.MAIN_ANDROID_APPLE_CLIENT_ID_UAT }}
+          MAIN_ANDROID_GOOGLE_CLIENT_ID_UAT: ${{ secrets.MAIN_ANDROID_GOOGLE_CLIENT_ID_UAT }}
+          MAIN_ANDROID_GOOGLE_SERVER_CLIENT_ID_UAT: ${{ secrets.MAIN_ANDROID_GOOGLE_SERVER_CLIENT_ID_UAT }}
+          GOOGLE_SERVICES_B64_IOS: ${{ secrets.GOOGLE_SERVICES_B64_IOS }}
+          GOOGLE_SERVICES_B64_ANDROID: ${{ secrets.GOOGLE_SERVICES_B64_ANDROID }}
+          MM_INFURA_PROJECT_ID: ${{ secrets.MM_INFURA_PROJECT_ID }}
+
+      # Cache build artifacts with the pre-build fingerprint
+      - name: Cache build artifacts
+        if: ${{ steps.cache-restore.outputs.cache-hit != 'true' }}
+        uses: actions/cache@v4
+        with:
+          path: |
+            android/app/build/outputs/apk/prod/release/app-prod-release.apk
+            android/app/build/outputs/apk/androidTest/prod/release/app-prod-release-androidTest.apk
+            android/app/build/outputs/bundle/prodRelease/app-prod-release.aab
+          key: android-apk-${{ steps.generate-fingerprint.outputs.fingerprint }}
 
       - name: Upload Android APK
         id: upload-apk

.github/workflows/build-ios-e2e.yml

@@ -68,6 +68,15 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-xcode-
 
+      # Cache CocoaPods to speed up pod install
+      - name: Cache CocoaPods
+        uses: actions/cache@v4
+        with:
+          path: ios/Pods
+          key: pods-${{ runner.os }}-${{ hashFiles('ios/Podfile.lock') }}
+          restore-keys: |
+            pods-${{ runner.os }}-
+
       # Install Node.js, Xcode tools, and other iOS development dependencies
       - name: Installing iOS Environment Setup
         uses: MetaMask/github-tools/.github/actions/setup-e2e-env@f932aba72712f44367f89f6e259ea0c8cfedcf68
@@ -103,12 +112,11 @@ jobs:
           command: |
             echo "🚀 Setting up project..."
             yarn setup:github-ci --build-ios --no-build-android
-      
+
       # Build the iOS E2E app for simulator
       - name: Build iOS E2E App
         run: |
           echo "🏗 Building iOS E2E App..."
-          export NODE_OPTIONS="--max-old-space-size=8192"
           yarn build:ios:main:e2e
         shell: bash
         env:
@@ -121,7 +129,7 @@ jobs:
           GITHUB_CI: "true"
           CI: "true"
 
-          NODE_OPTIONS: "--max_old_space_size=4096" # Increase memory limit for build
+          NODE_OPTIONS: "--max-old-space-size=4096" # Increase memory limit for build
 
           SEGMENT_WRITE_KEY_QA: ${{ secrets.SEGMENT_WRITE_KEY_QA }}
           SEGMENT_PROXY_URL_QA: ${{ secrets.SEGMENT_PROXY_URL_QA }}

app.config.js

@@ -27,6 +27,9 @@ module.exports = {
 
     'expo-apple-authentication',
   ],
+  android: {
+    package: 'io.metamask', // Required for @expo/repack-app Android repacking
+  },
   ios: {
     usesAppleSignIn: true,
   },

package.json

@@ -49,6 +49,8 @@
     "build:android:main:test": "./scripts/build.sh android main test",
     "build:android:main:e2e": "./scripts/build.sh android main e2e",
     "build:android:flask:prod": "./scripts/build.sh android flask production",
+    "fingerprint:generate": "node scripts/generate-fingerprint.js",
+    "repack:android": "node scripts/repack-e2e.js",
     "build:android:flask:local": "./scripts/build.sh android flask local",
     "build:android:flask:test": "./scripts/build.sh android flask test",
     "build:android:flask:e2e": "./scripts/build.sh android flask e2e",
@@ -215,6 +217,7 @@
     "@craftzdog/react-native-buffer": "^6.1.0",
     "@deeeed/hyperliquid-node20": "^0.23.1-node20.1",
     "@ethersproject/abi": "^5.7.0",
+    "@expo/fingerprint": "^0.15.0",
     "@keystonehq/bc-ur-registry-eth": "^0.21.0",
     "@keystonehq/ur-decoder": "^0.12.2",
     "@lavamoat/react-native-lockdown": "^0.0.2",
@@ -502,6 +505,7 @@
     "zxcvbn": "4.4.2"
   },
   "devDependencies": {
+    "@expo/repack-app": "^0.2.9",
     "@babel/core": "^7.25.2",
     "@babel/eslint-parser": "^7.25.1",
     "@babel/preset-env": "^7.25.3",

scripts/generate-fingerprint.js

@@ -0,0 +1,15 @@
+const { createFingerprintAsync } = require('@expo/fingerprint');
+
+async function generateFingerprint() {
+  try {
+    const { hash } = await createFingerprintAsync(process.cwd(), { mode: 'prebuild' });
+    // Only output the hash to stdout, no console.log or extra output
+    process.stdout.write(hash);
+  } catch (error) {
+    // Write error to stderr instead of stdout to avoid corrupting the hash output
+    process.stderr.write(`Error generating fingerprint: ${error.message}\n`);
+    process.exit(1);
+  }
+}
+
+generateFingerprint();