ci: Add conventional commits linting (#147)

- Add commit-lint job to CI workflow that validates conventional commits
- Configure commitlint with @commitlint/config-conventional
- Add Node.js/pnpm setup for running commitlint in CI
- Handle both push events (last commit) and pull requests (range
validation)
- Customize subject-case rule to prevent restrictive casing enforcement
- The idea behind using conventional commits is to have a nice-looking
changelog for users

Author: vitallium

.github/workflows/ci.yml

@@ -60,3 +60,29 @@ jobs:
         with:
           command: nextest
           args: run --all-features --profile ci
+
+  commit-lint:
+    name: Verify Conventional Commits
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: "pnpm"
+      - name: Install dependencies
+        run: pnpm install
+      - name: Validate current commit (last commit) with commitlint
+        if: github.event_name == 'push'
+        run: pnpm commitlint --last --verbose
+      - name: Validate PR commits with commitlint
+        if: github.event_name == 'pull_request'
+        run: pnpm commitlint --from ${{ github.event.pull_request.base.sha }} --to ${{ github.event.pull_request.head.sha }} --verbose

.gitignore

@@ -1,3 +1,6 @@
 /*.wasm
 /target
 grammars/
+
+# Node.js stuff
+/node_modules/

commitlint.config.js

@@ -0,0 +1,18 @@
+export default {
+  extends: ["@commitlint/config-conventional"],
+  rules: {
+    "subject-case": [
+      2,
+      "never",
+      [
+        "lower-case",
+        "upper-case",
+        "camel-case",
+        "kebab-case",
+        "pascal-case",
+        "snake-case",
+        "start-case",
+      ],
+    ],
+  },
+};

package.json

@@ -0,0 +1,10 @@
+{
+  "name": "zed-ruby",
+  "private": true,
+  "type": "module",
+  "packageManager": "pnpm@10.13.1",
+  "devDependencies": {
+    "@commitlint/cli": "^19.8.1",
+    "@commitlint/config-conventional": "^19.8.1"
+  }
+}