chore: npm から pnpm へ移行

Author: ysk8hori

.github/workflows/integration-testing.yml

@@ -17,12 +17,16 @@ jobs:
 
     steps:
       - uses: actions/checkout@v5
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v5
         with:
           node-version: ${{ matrix.node-version }}
-          cache: 'npm'
-      - run: npm ci
-      - run: npm run build --if-present
-      - run: npm run test
-      - run: npm run test:integration
+          cache: 'pnpm'
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm run build --if-present
+      - run: pnpm run test
+      - run: pnpm run test:integration

.gitignore

@@ -1,5 +1,4 @@
 node_modules
 dist
 typescript-graph.md
-.npmrc
 __tmp__

.npmrc

@@ -0,0 +1,6 @@
+# pnpm configuration
+auto-install-peers=true
+# --save-exact を自動適用
+save-prefix=''
+# リリースから 7 日経過(= 60 x 24 x 7 min)したパッケージのみインストールを許可する
+minimum-release-age=10080