[Draft] feat: use yarn 4 in monorepo

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

@@ -8,6 +8,9 @@ inputs:
 runs:
   using: "composite"
   steps:
+    - name: corepack enable
+      run: corepack enable
+      shell: bash
     - name: Setup node.js
       uses: actions/setup-node@v4
       with:

.github/actions/yarn-install/action.yml

@@ -1,20 +1,17 @@
-name: yarn-install
+name: Yarn
+description: Runs `yarn install`
+inputs:
+  immutable:
+    description: Abort with an error exit code if the lockfile was to be modified
+    default: true
 runs:
   using: composite
   steps:
-    - name: Install dependencies
+    - name: Install npm dependencies
+      if: ${{ inputs.immutable == 'true' }}
+      run: yarn
+      shell: bash
+    - name: Install npm dependencies (ignore lockfile changes)
+      if: ${{ inputs.immutable != 'true' }}
+      run: yarn --no-immutable
       shell: bash
-      run: |
-        MAX_ATTEMPTS=2
-        ATTEMPT=0
-        WAIT_TIME=20
-        while [ $ATTEMPT -lt $MAX_ATTEMPTS ]; do
-            yarn install --non-interactive --frozen-lockfile && break
-            echo "yarn install failed. Retrying in $WAIT_TIME seconds..."
-            sleep $WAIT_TIME
-            ATTEMPT=$((ATTEMPT + 1))
-        done
-        if [ $ATTEMPT -eq $MAX_ATTEMPTS ]; then
-            echo "All attempts to invoke yarn install failed - Aborting the workflow"
-            exit 1
-        fi

.gitignore

@@ -165,3 +165,7 @@ fix_*.patch
 
 # [Experimental] Generated TS type definitions
 /packages/**/types_generated/
+
+# Yarn
+.yarn/cache
+.yarn/install-state.gz

.yarnrc.yml

@@ -0,0 +1 @@
+nodeLinker: node-modules

package.json

@@ -3,7 +3,7 @@
   "private": true,
   "version": "1000.0.0",
   "license": "MIT",
-  "packageManager": "yarn@1.22.22",
+  "packageManager": "yarn@4.9.1",
   "scripts": {
     "android": "yarn --cwd packages/rn-tester android",
     "build-android": "./gradlew :packages:react-native:ReactAndroid:build",
@@ -52,8 +52,8 @@
     "@babel/preset-flow": "^7.24.7",
     "@definitelytyped/dtslint": "^0.0.127",
     "@jest/create-cache-key-function": "^29.7.0",
-    "@react-native/metro-babel-transformer": "0.80.0-main",
-    "@react-native/metro-config": "0.80.0-main",
+    "@react-native/metro-babel-transformer": "workspace:*",
+    "@react-native/metro-config": "workspace:*",
     "@tsconfig/node18": "1.0.1",
     "@types/react": "^19.0.0",
     "@typescript-eslint/parser": "^7.1.1",

packages/community-cli-plugin/package.json

@@ -22,7 +22,7 @@
     "dist"
   ],
   "dependencies": {
-    "@react-native/dev-middleware": "0.80.0-main",
+    "@react-native/dev-middleware": "workspace:*",
     "chalk": "^4.0.0",
     "debug": "^4.4.0",
     "invariant": "^2.2.4",

packages/core-cli-utils/package.json

@@ -25,7 +25,5 @@
   },
   "files": [
     "dist"
-  ],
-  "dependencies": {},
-  "devDependencies": {}
+  ]
 }

packages/dev-middleware/package.json

@@ -23,7 +23,7 @@
   ],
   "dependencies": {
     "@isaacs/ttlcache": "^1.4.1",
-    "@react-native/debugger-frontend": "0.80.0-main",
+    "@react-native/debugger-frontend": "workspace:*",
     "chrome-launcher": "^0.15.2",
     "chromium-edge-launcher": "^0.2.0",
     "connect": "^3.6.5",

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

@@ -22,7 +22,7 @@
   "dependencies": {
     "@babel/core": "^7.25.2",
     "@babel/eslint-parser": "^7.25.1",
-    "@react-native/eslint-plugin": "0.80.0-main",
+    "@react-native/eslint-plugin": "workspace:*",
     "@typescript-eslint/eslint-plugin": "^7.1.1",
     "@typescript-eslint/parser": "^7.1.1",
     "eslint-config-prettier": "^8.5.0",

packages/eslint-plugin-specs/package.json

@@ -26,7 +26,7 @@
   "dependencies": {
     "@babel/core": "^7.25.2",
     "@babel/plugin-transform-flow-strip-types": "^7.25.2",
-    "@react-native/codegen": "0.80.0-main",
+    "@react-native/codegen": "workspace:*",
     "make-dir": "^2.1.0",
     "pirates": "^4.0.1",
     "source-map-support": "0.5.0"

packages/helloworld/package.json

@@ -19,10 +19,10 @@
     "@babel/core": "^7.25.2",
     "@babel/preset-env": "^7.25.3",
     "@babel/runtime": "^7.25.0",
-    "@react-native/babel-preset": "0.80.0-main",
-    "@react-native/core-cli-utils": "0.80.0-main",
-    "@react-native/eslint-config": "0.80.0-main",
-    "@react-native/metro-config": "0.80.0-main",
+    "@react-native/babel-preset": "workspace:*",
+    "@react-native/core-cli-utils": "workspace:*",
+    "@react-native/eslint-config": "workspace:*",
+    "@react-native/metro-config": "workspace:*",
     "chalk": "^4.1.2",
     "commander": "^12.0.0",
     "eslint": "^8.19.0",

packages/metro-config/package.json

@@ -26,8 +26,8 @@
     "dist"
   ],
   "dependencies": {
-    "@react-native/js-polyfills": "0.80.0-main",
-    "@react-native/metro-babel-transformer": "0.80.0-main",
+    "@react-native/js-polyfills": "workspace:*",
+    "@react-native/metro-babel-transformer": "workspace:*",
     "metro-config": "^0.82.0",
     "metro-runtime": "^0.82.0"
   }

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

@@ -66,7 +66,7 @@
     "@babel/plugin-transform-typescript": "^7.25.2",
     "@babel/plugin-transform-unicode-regex": "^7.24.7",
     "@babel/template": "^7.25.0",
-    "@react-native/babel-plugin-codegen": "0.80.0-main",
+    "@react-native/babel-plugin-codegen": "workspace:*",
     "babel-plugin-syntax-hermes-parser": "0.28.0",
     "babel-plugin-transform-flow-enums": "^0.0.2",
     "react-refresh": "^0.14.0"

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

@@ -27,7 +27,7 @@
   ],
   "dependencies": {
     "@babel/core": "^7.25.2",
-    "@react-native/babel-preset": "0.80.0-main",
+    "@react-native/babel-preset": "workspace:*",
     "hermes-parser": "0.28.0",
     "nullthrows": "^1.1.1"
   },

packages/react-native-codegen-typescript-test/package.json

@@ -19,18 +19,18 @@
     "prepare": "yarn run build"
   },
   "dependencies": {
-    "@react-native/codegen": "0.80.0-main"
+    "@react-native/codegen": "workspace:*"
   },
   "devDependencies": {
     "@babel/core": "^7.25.2",
-    "@babel/plugin-transform-class-properties": "^7.25.4",
-    "@babel/plugin-transform-nullish-coalescing-operator": "^7.24.7",
-    "@babel/plugin-transform-object-rest-spread": "^7.24.7",
-    "@babel/plugin-transform-optional-chaining": "^7.24.8",
     "@babel/plugin-syntax-dynamic-import": "^7.8.3",
     "@babel/plugin-transform-async-to-generator": "^7.24.7",
+    "@babel/plugin-transform-class-properties": "^7.25.4",
     "@babel/plugin-transform-destructuring": "^7.24.8",
     "@babel/plugin-transform-flow-strip-types": "^7.25.2",
+    "@babel/plugin-transform-nullish-coalescing-operator": "^7.24.7",
+    "@babel/plugin-transform-object-rest-spread": "^7.24.7",
+    "@babel/plugin-transform-optional-chaining": "^7.24.8",
     "@babel/preset-env": "^7.25.3",
     "@types/jest": "^29.5.3",
     "jest": "^29.7.0",

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

@@ -29,7 +29,7 @@
     "dist"
   ],
   "dependencies": {
-    "@react-native/codegen": "0.80.0-main"
+    "@react-native/codegen": "workspace:*"
   },
   "devDependencies": {
     "flow-remove-types": "^2.237.2",

packages/react-native-popup-menu-android/package.json

@@ -21,7 +21,7 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "@react-native/codegen": "0.80.0-main"
+    "@react-native/codegen": "workspace:*"
   },
   "peerDependencies": {
     "@types/react": "^19.0.0",

packages/react-native-test-library/package.json

@@ -26,7 +26,7 @@
   ],
   "devDependencies": {
     "@babel/core": "^7.25.2",
-    "@react-native/babel-preset": "0.80.0-main",
+    "@react-native/babel-preset": "workspace:*",
     "react-native": "1000.0.0"
   },
   "peerDependencies": {

packages/react-native/package.json

@@ -23,9 +23,7 @@
   "engines": {
     "node": ">=18"
   },
-  "bin": {
-    "react-native": "cli.js"
-  },
+  "bin": "cli.js",
   "types": "types",
   "jest-junit": {
     "outputDirectory": "reports/junit",
@@ -119,13 +117,13 @@
   },
   "dependencies": {
     "@jest/create-cache-key-function": "^29.7.0",
-    "@react-native/assets-registry": "0.80.0-main",
-    "@react-native/codegen": "0.80.0-main",
-    "@react-native/community-cli-plugin": "0.80.0-main",
-    "@react-native/gradle-plugin": "0.80.0-main",
-    "@react-native/js-polyfills": "0.80.0-main",
-    "@react-native/normalize-colors": "0.80.0-main",
-    "@react-native/virtualized-lists": "0.80.0-main",
+    "@react-native/assets-registry": "workspace:*",
+    "@react-native/codegen": "workspace:*",
+    "@react-native/community-cli-plugin": "workspace:*",
+    "@react-native/gradle-plugin": "workspace:*",
+    "@react-native/js-polyfills": "workspace:*",
+    "@react-native/normalize-colors": "workspace:*",
+    "@react-native/virtualized-lists": "workspace:*",
     "abort-controller": "^3.0.0",
     "anser": "^1.4.9",
     "ansi-regex": "^5.0.0",

packages/rn-tester/package.json

@@ -26,8 +26,8 @@
     "e2e-test-ios": "./scripts/maestro-test-ios.sh"
   },
   "dependencies": {
-    "@react-native/oss-library-example": "0.80.0-main",
-    "@react-native/popup-menu-android": "0.80.0-main",
+    "@react-native/oss-library-example": "workspace:*",
+    "@react-native/popup-menu-android": "workspace:*",
     "flow-enums-runtime": "^0.0.6",
     "invariant": "^2.2.4",
     "nullthrows": "^1.1.1"