cache playwright in ci

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

@@ -0,0 +1,20 @@
+name: "Setup Playwright"
+description: "Setup Playwright with caching, using npm (should already be installed)"
+runs:
+  using: "composite"
+  steps:
+    - name: Extract Playwright version
+      id: playwright-version
+      shell: bash
+      run: echo "PLAYWRIGHT_VERSION=$(jq -r '.devDependencies.playwright' package.json)" >> $GITHUB_ENV
+
+    - name: Cache Playwright
+      id: playwright-cache
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/ms-playwright
+        key: playwright-${{ runner.os }}-${{ env.PLAYWRIGHT_VERSION }}
+
+    - name: Install Playwright dependencies
+      shell: bash
+      run: npx playwright install --with-deps --only-shell

.github/workflows/tests.yml

@@ -101,35 +101,44 @@ jobs:
     name: Test next-ui
     steps:
       - uses: actions/checkout@v4
+
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           cache: 'npm'
           cache-dependency-path: next-ui/package-lock.json
+
       - name: npm install
         working-directory: next-ui
         run: npm ci
-      - name: npx playwright install --with-deps
-        working-directory: next-ui
-        run: npx playwright install --with-deps
+
+      - name: Setup Playwright
+        uses: ./.github/actions/setup-playwright
+
       - name: test:unit
         working-directory: next-ui
         run: npm run test:unit
+
+      # retry because of https://github.com/storybookjs/storybook/issues/31599
       - name: test:storybook
         uses: nick-fields/retry@v3
         with:
           command: npm run --prefix next-ui test:storybook
           max_attempts: '3'
           timeout_minutes: '5'
+
       - name: lint
         working-directory: next-ui
         run: npm run lint
+
       - name: prettier
         working-directory: next-ui
         run: npm run prettier
+
       - name: type-check
         working-directory: next-ui
         run: npm run type-check
+
       - name: build
         working-directory: next-ui
         run: npm run build-only