Add and sort eslint rules

.eslintrc

@@ -15,6 +15,7 @@
         "sourceType": "module"
     },
     "rules": {
+        "class-methods-use-this": "error",
         "default-case-last": "error",
         "default-param-last": "error",
         "dot-notation": "error",
@@ -73,14 +74,14 @@
         "no-unreachable-loop": "warn",
         "no-unused-expressions": "error",
         "no-unused-vars": "warn",
-        "no-useless-escape": "off",
+        "no-use-before-define": ["off", "nofunc"],
+        "no-useless-backreference": "warn",
         "no-useless-call": "warn",
         "no-useless-concat": "warn",
+        "no-useless-escape": "off",
         "no-void": "error",
         "no-warning-comments": "warn",
         "no-with": "error",
-        "no-use-before-define": ["off", "nofunc"],
-        "no-useless-backreference": "warn",
         "quotes": ["error", "single"],
         "radix": ["error", "always"],
         "require-atomic-updates": "error",