chore: add husky, lint-staged, commitlint (#16)

.commitlintrc.js

@@ -0,0 +1,3 @@
+module.exports = {
+  extends: ['@commitlint/config-conventional']
+};

.editorconfig

@@ -4,10 +4,9 @@ root = true
 [*]
 indent_style = space
 indent_size = 2
+tab_width = 2
 end_of_line = lf
 charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[*.md]
-trim_trailing_whitespace = false

.huskyrc.js

@@ -0,0 +1,7 @@
+module.exports = {
+  $schema: 'http://json.schemastore.org/huskyrc',
+  hooks: {
+    'pre-commit': 'lint-staged',
+    'commit-msg': 'commitlint -E HUSKY_GIT_PARAMS'
+  }
+};

.lintstagedrc.js

@@ -0,0 +1,4 @@
+module.exports = {
+  $schema: 'http://json.schemastore.org/lintstagedrc.schema',
+  '**/*.{js, ts}': ['prettier --write', 'eslint --fix', 'git add']
+};

.prettierrc.js

@@ -0,0 +1,6 @@
+module.exports = {
+  $schema: 'http://json.schemastore.org/prettierrc',
+  printWidth: 80,
+  singleQuote: true,
+  arrowParens: 'always'
+};

package.json

@@ -7,14 +7,18 @@
   "devDependencies": {
     "@babel/cli": "^7.5.5",
     "@babel/core": "^7.5.5",
+    "@commitlint/cli": "^8.1.0",
+    "@commitlint/config-conventional": "^8.1.0",
     "@mjolnir/babel-preset": "link:packages/babel-preset",
     "@mjolnir/eslint-config": "link:packages/eslint-config",
     "cross-env": "^5.2.0",
     "eslint": "^6.1.0",
     "eslint-config-prettier": "^6.0.0",
     "eslint-plugin-prettier": "^3.1.0",
+    "husky": "^3.0.4",
     "lerna": "^3.15.0",
     "lerna-changelog": "^0.8.2",
+    "lint-staged": "^9.2.4",
     "prettier": "^1.17.1",
     "typescript": "^3.5.3"
   },