Upgrade to Yarn 4

.codesandbox/ci.json

@@ -1,6 +1,6 @@
 {
   "sandboxes": ["vanilla", "vanilla-ts"],
-  "node": "14",
+  "node": "18",
   "buildCommand": "build",
   "packages": ["."]
 }

.github/workflows/publish.yaml

@@ -11,14 +11,14 @@ jobs:
       id-token: write
       contents: read
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: '18.x'
+          node-version: '20.x'
           registry-url: 'https://registry.npmjs.org'
           cache: 'yarn'
       - run: yarn install --frozen-lockfile
       - run: yarn test
       - run: npm publish --access public --provenance
         env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/size.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 1
       - uses: preactjs/compressed-size-action@v2

.github/workflows/test.yml

@@ -2,9 +2,9 @@ name: Tests
 
 on:
   push:
-    branches: [master, v9.0-integration]
+    branches: [master]
   pull_request:
-    branches: [master, v9.0-integration]
+    branches: [master]
   workflow_dispatch:
 
 jobs:
@@ -14,12 +14,12 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version: 20.x
           cache: 'yarn'
 
       - name: Install dependencies
@@ -37,7 +37,7 @@ jobs:
       - name: Pack
         run: yarn pack
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: package
           path: ./package.tgz
@@ -50,15 +50,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['18.x']
+        node: ['20.x']
         ts: ['4.7', '4.8', '4.9', '5.0', '5.1', '5.2', '5.3', '5.4']
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Use node ${{ matrix.node }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
           cache: 'yarn'
@@ -82,12 +82,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['18.x']
+        node: ['20.x']
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: package
           path: .
@@ -106,7 +106,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['18.x']
+        node: ['20.x']
         example:
           [
             'cra4',
@@ -123,7 +123,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Use node ${{ matrix.node }}
-        uses: actions/setup-node@v3.8.1
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
           cache: 'yarn'
@@ -146,14 +146,16 @@ jobs:
 
       - name: Install deps
         working-directory: ./redux-toolkit/examples/publish-ci/${{ matrix.example }}
-        run: rm yarn.lock && YARN_ENABLE_IMMUTABLE_INSTALLS=false yarn install
+        env:
+          YARN_ENABLE_IMMUTABLE_INSTALLS: false
+        run: rm yarn.lock && yarn install
 
       - name: Install Playwright browser if necessary
         working-directory: ./redux-toolkit/examples/publish-ci/${{ matrix.example }}
         continue-on-error: true
         run: yarn playwright install
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4
         with:
           name: package
           path: ./redux-toolkit/examples/publish-ci/${{ matrix.example }}
@@ -179,7 +181,9 @@ jobs:
 
       - name: Build example
         working-directory: ./redux-toolkit/examples/publish-ci/${{ matrix.example }}
-        run: NODE_OPTIONS=--openssl-legacy-provider yarn build
+        env:
+          NODE_OPTIONS: --openssl-legacy-provider
+        run: yarn build
 
       - name: Run test step
         working-directory: ./redux-toolkit/examples/publish-ci/${{ matrix.example }}
@@ -193,17 +197,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['18.x']
+        node: ['20.x']
         example: ['rr-rsc-context']
     defaults:
       run:
         working-directory: ./examples/publish-ci/${{ matrix.example }}
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Use node ${{ matrix.node }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
           cache: 'yarn'
@@ -214,7 +218,7 @@ jobs:
       - name: Remove existing React-Redux
         run: yarn remove react-redux
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: package
           path: ./examples/publish-ci/${{ matrix.example }}

.yarnrc.yml

@@ -1,9 +1,7 @@
-nodeLinker: node-modules
+compressionLevel: mixed
+
+enableGlobalCache: false
 
-plugins:
-  - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
-    spec: "@yarnpkg/plugin-workspace-tools"
-  - path: .yarn/plugins/@yarnpkg/plugin-compat.cjs
-    spec: "@yarnpkg/plugin-compat"
+nodeLinker: node-modules
 
-yarnPath: .yarn/releases/yarn-3.4.1.cjs
+yarnPath: .yarn/releases/yarn-4.1.0.cjs