ci: semantic commits check (backport #495) (#496)

Co-authored-by: Rucha Mahabal <[email protected]>

.github/workflows/linters.yml

@@ -4,10 +4,30 @@ on:
   pull_request: { }
 
 jobs:
+  commit-lint:
+    name: 'Semantic Commits'
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 200
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 16
+          check-latest: true
 
-  linters:
-    name: linters
+      - name: Check commit titles
+        run: |
+          npm install @commitlint/cli @commitlint/config-conventional
+          npx commitlint --verbose --from ${{ github.event.pull_request.base.sha }} --to ${{ github.event.pull_request.head.sha }}
+
+  linter:
+    name: 'Frappe Linter'
     runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+
     steps:
       - uses: actions/checkout@v2
 

commitlint.config.js

@@ -0,0 +1,25 @@
+module.exports = {
+	parserPreset: 'conventional-changelog-conventionalcommits',
+	rules: {
+		'subject-empty': [2, 'never'],
+		'type-case': [2, 'always', 'lower-case'],
+		'type-empty': [2, 'never'],
+		'type-enum': [
+			2,
+			'always',
+			[
+				'build',
+				'chore',
+				'ci',
+				'docs',
+				'feat',
+				'fix',
+				'perf',
+				'refactor',
+				'revert',
+				'style',
+				'test',
+			],
+		],
+	},
+};