ci: add automatic lint fixing to CI workflow

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
@@ -41,6 +45,41 @@ jobs:
         run: |
           npx commitlint --from ${{ github.event.pull_request.base.sha }} --to ${{ github.event.pull_request.head.sha }}
 
+      - 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

@@ -14,6 +14,9 @@
 		"test": "vitest run --coverage",
 		"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": "npm run build",
 		"prepublishOnly": "npm test && npm run build",
 		"start": "node dist/index.js"