chore: yarnではなくnpmを使うようにする

.github/workflows/ci.yml

@@ -17,9 +17,9 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version-file: .tool-versions
-        cache: yarn
-    - run: yarn install
-    - run: yarn lint-biome && git diff --exit-code
+        cache: npm
+    - run: npm ci
+    - run: npm run lint-biome && git diff --exit-code
 
   lint-ts:
     name: Lint TypeScript
@@ -30,9 +30,9 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version-file: .tool-versions
-        cache: yarn
-    - run: yarn install
-    - run: yarn lint-ts
+        cache: npm
+    - run: npm ci
+    - run: npm run lint-ts
 
   lint-secretlint:
     name: Lint Secretlint
@@ -43,9 +43,9 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version-file: .tool-versions
-        cache: yarn
-    - run: yarn install
-    - run: yarn lint-secretlint
+        cache: npm
+    - run: npm ci
+    - run: npm run lint-secretlint
 
   lint-renovate-config:
     name: Lint Renovate config
@@ -84,9 +84,9 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version-file: .tool-versions
-        cache: yarn
-    - run: yarn install
-    - run: yarn test-coverage
+        cache: npm
+    - run: npm ci
+    - run: npm run test-coverage
 
   generate:
     name: Generate feed and site
@@ -97,12 +97,12 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version-file: .tool-versions
-        cache: yarn
-    - run: yarn install
+        cache: npm
+    - run: npm ci
     - name: Generate feed
-      run: yarn feed-generate
+      run: npm run feed-generate
     - name: Generate site
-      run: yarn site-build
+      run: npm run site-build
     - name: Archive feed
       uses: actions/upload-artifact@v4
       with:

.github/workflows/external-test.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version-file: .tool-versions
-          cache: yarn
-      - run: yarn install
+          cache: npm
+      - run: npm ci
       - name: Run External Tests
-        run: yarn test-external
+        run: npm run test-external

.github/workflows/generate-feed.yml

@@ -28,10 +28,10 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version-file: .tool-versions
-          cache: yarn
+          cache: npm
 
       - name: Install node packages
-        run: yarn install
+        run: npm ci
 
       - name: Get date
         id: get-date
@@ -46,10 +46,10 @@ jobs:
           key: ${{ runner.os }}-feed-images-${{ steps.get-date.outputs.date }}
 
       - name: Generate feed
-        run: yarn feed-generate
+        run: npm run feed-generate
 
       - name: Generate site
-        run: yarn site-build
+        run: npm run site-build
 
       - name: Push to GitHub Pages
         uses: peaceiris/actions-gh-pages@v4

README.md

@@ -64,25 +64,25 @@ GitHub Actions で定期的に更新されており、サイトの生成は [Ele
 
 パッケージのインストール
 ```bash
-$ yarn
+$ npm install
 ```
 
 フィード生成とサイト立ち上げ
 ```bash
 $ # フィードを取得して作成
-$ yarn feed-generate
+$ npm run feed-generate
 
 $ # localhost:8080 で確認
-$ yarn site-serve
+$ npm run site-serve
 ```
 
 コードのチェック
 ```bash
 $ # eslint, tsc --noEmit
-$ yarn lint
+$ npm run lint
 
 $ # テスト
-$ yarn test
+$ npm run test
 ```
 
 ## ライセンス