update eslint rules

Author: mojavelinux

.eslintrc

@@ -13,6 +13,7 @@
       "message": "Use String#slice instead."
     }],
     "max-len": [1, 120, 2],
-    "spaced-comment": "off"
+    "spaced-comment": "off",
+    "radix": ["error", "always"]
   }
 }