Upgrade to Yarn 4

.codesandbox/ci.json

@@ -1,4 +1,4 @@
 {
   "sandboxes": ["vanilla", "vanilla-ts"],
-  "node": "16"
+  "node": "18"
 }

.github/workflows/publish.yaml

@@ -11,10 +11,10 @@ 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

.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.yaml

@@ -8,8 +8,8 @@ jobs:
     outputs:
       src: ${{ steps.filter.outputs.src }}
     steps:
-      - uses: actions/checkout@v2
-      - uses: dorny/paths-filter@v2
+      - uses: actions/checkout@v4
+      - uses: dorny/paths-filter@v3
         id: filter
         with:
           filters: |
@@ -29,14 +29,14 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: ['18.x']
+        node: ['20.x']
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Use node ${{ matrix.node }}
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
           cache: 'yarn'
@@ -53,7 +53,7 @@ jobs:
       - name: Pack
         run: yarn pack
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: package
           path: ./package.tgz
@@ -65,21 +65,21 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['18.x']
+        node: ['20.x']
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Use node ${{ matrix.node }}
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
           cache: 'yarn'
 
       - name: Install deps
         run: yarn install
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4
         with:
           name: package
           path: .
@@ -102,14 +102,14 @@ 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@v2
+        uses: actions/checkout@v4
 
       - name: Use node ${{ matrix.node }}
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
           cache: 'yarn'
@@ -120,7 +120,7 @@ jobs:
       - name: Install TypeScript ${{ matrix.ts }}
         run: yarn add typescript@${{ matrix.ts }}
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4
         with:
           name: package
           path: .
@@ -143,12 +143,12 @@ 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: .
@@ -165,14 +165,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['18.x']
+        node: ['20.x']
         example: ['cra4', 'cra5', 'next', 'vite', 'node-standard', 'node-esm']
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Use node ${{ matrix.node }}
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
           cache: 'yarn'
@@ -185,9 +185,11 @@ jobs:
 
       - name: Install deps
         working-directory: ./redux-toolkit/examples/publish-ci/${{ matrix.example }}
+        env:
+          YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: yarn install
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4
         with:
           name: package
           path: ./redux-toolkit/examples/publish-ci/${{ matrix.example }}
@@ -206,7 +208,9 @@ 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 }}

.yarnrc.yml

@@ -1,3 +1,7 @@
+compressionLevel: mixed
+
+enableGlobalCache: false
+
 nodeLinker: node-modules
 
-yarnPath: .yarn/releases/yarn-3.4.1.cjs
+yarnPath: .yarn/releases/yarn-4.1.0.cjs