ci: add automatic lint fixing to CI workflow

- Auto-apply Biome formatting and linting fixes
- Commit and push fixes automatically on push events
- Use EndBug/add-and-commit action for PR workflows
- Only run auto-fix on Node 20 to avoid conflicts
- Add lint:fix script to package.json
- Update permissions to allow writing commits
- Add [skip ci] to prevent infinite loops

Author: Mearman

.github/workflows/ci.yml

@@ -9,7 +9,8 @@ on:
       - main
 
 permissions:
-  contents: read
+  contents: write
+  pull-requests: write
 
 jobs:
   test:
@@ -24,6 +25,9 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          fetch-depth: 0
 
       - name: Setup Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v4
@@ -41,8 +45,40 @@ jobs:
         run: |
           npx commitlint --from ${{ github.event.pull_request.base.sha }} --to ${{ github.event.pull_request.head.sha }}
 
-      - name: Lint code
-        run: yarn lint
+      - name: Lint and auto-fix code
+        id: lint
+        run: |
+          # First try to apply fixes
+          yarn format || true
+          yarn lint:fix || true
+          
+          # Check if there are any changes
+          if [[ -n $(git status --porcelain) ]]; then
+            echo "has_changes=true" >> $GITHUB_OUTPUT
+          else
+            echo "has_changes=false" >> $GITHUB_OUTPUT
+          fi
+          
+          # Run lint check to see if issues remain
+          yarn lint
+
+      - name: Commit and push lint fixes
+        if: steps.lint.outputs.has_changes == 'true' && github.event_name == 'push' && matrix.node-version == '20'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add -A
+          git commit -m "style: apply automatic lint fixes [skip ci]"
+          git push
+
+      - name: Commit lint fixes to PR
+        if: steps.lint.outputs.has_changes == 'true' && github.event_name == 'pull_request' && matrix.node-version == '20'
+        uses: EndBug/add-and-commit@v9
+        with:
+          author_name: github-actions[bot]
+          author_email: 41898282+github-actions[bot]@users.noreply.github.com
+          message: 'style: apply automatic lint fixes'
+          push: true
 
       - name: Type check
         run: npx tsc --noEmit

package.json

@@ -11,17 +11,12 @@
 		"test:watch": "vitest --watch",
 		"test:ci": "vitest run --coverage --reporter=json --reporter=default",
 		"lint": "biome check .",
+		"lint:fix": "biome check --write .",
 		"format": "biome format --write .",
 		"prepare": "husky",
 		"start": "node dist/index.js"
 	},
-	"keywords": [
-		"mcp",
-		"model-context-protocol",
-		"typescript",
-		"template",
-		"mcp-server"
-	],
+	"keywords": ["mcp", "model-context-protocol", "typescript", "template", "mcp-server"],
 	"author": "",
 	"license": "MIT",
 	"repository": {