eslint util

Author: Hagellach37

firebase/functions/package.json

@@ -15,7 +15,8 @@
   },
   "devDependencies": {
     "eslint": "^5.12.0",
-    "eslint-plugin-promise": "^4.0.1"
+    "eslint-plugin-promise": "^4.0.1",
+    "eslint-utils": "^1.4.1"
   },
   "engines": {
     "node": "8"