PNPM in action.

.github/workflows/node.js.yml

@@ -25,6 +25,24 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
           cache: 'npm'
+      - uses: pnpm/action-setup@v2
+        name: Install pnpm
+        with:
+          version: 8
+          run_install: false
+      - name: Get pnpm store directory
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+      - uses: actions/cache@v3
+        name: Setup pnpm cache
+        with:
+          path: ${{ env.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+      - name: Install dependencies
+        run: pnpm install
       - run: npm ci
       - run: npm run build --if-present
       - run: npm test