chore: Add commitlint

commitlint.config.js

@@ -0,0 +1,29 @@
+module.exports = {
+  parserPreset: 'conventional-changelog-conventionalcommits',
+  rules: {
+    'body-leading-blank': [1, 'always'],
+    'footer-leading-blank': [1, 'always'],
+    'scope-case': [2, 'always', 'lower-case'],
+    'subject-full-stop': [2, 'never', '.'],
+    'type-case': [2, 'always', 'lower-case'],
+    'type-empty': [2, 'never'],
+    'type-enum': [
+      2,
+      'always',
+      [
+        'build',
+        'chore',
+        'ci',
+        'docs',
+        'feat',
+        'fix',
+        'improvement',
+        'perf',
+        'refactor',
+        'revert',
+        'style',
+        'test'
+      ]
+    ]
+  }
+}

package.json

@@ -39,6 +39,8 @@
     "pascalcase": "^1.0.0"
   },
   "devDependencies": {
+    "@commitlint/cli": "^8.3.4",
+    "@commitlint/config-conventional": "^8.3.4",
     "@semantic-release/github": "^5.5.5",
     "@semantic-release/npm": "^5.3.4",
     "babel-cli": "6.24.1",
@@ -60,6 +62,7 @@
   },
   "husky": {
     "hooks": {
+      "commit-msg": "commitlint -E HUSKY_GIT_PARAMS",
       "pre-commit": "npm run lint",
       "pre-push": "npm run test"
     }