chore: format and lint on commit

package.json

@@ -41,7 +41,21 @@
     "eslint-plugin-node": "^8.0.0",
     "eslint-plugin-promise": "^4.0.1",
     "eslint-plugin-standard": "^4.0.0",
+    "husky": "^1.2.0",
+    "lint-staged": "^8.1.0",
     "prettier": "^1.15.3"
   },
-  "license": "MIT"
+  "license": "MIT",
+  "husky": {
+    "hooks": {
+      "pre-commit": "lint-staged"
+    }
+  },
+  "lint-staged": {
+    "*.js": [
+      "prettier --write",
+      "git add",
+      "eslint"
+    ]
+  }
 }