Fix code review issues and clean up code

Author: Marek Rozmus

examples/.eslintrc

@@ -1,16 +1,18 @@
 {
   "env": {
-    "browser": true,
-    "node": true
+    "browser": true
   },
   "extends": ["plugin:prettier/recommended", "plugin:react/recommended"],
   "parser": "babel-eslint",
+  "plugins": ["react-hooks"],
   "settings": {
     "react": {
       "version": "detect"
     }
   },
   "rules": {
-    "no-undef": "error"
+    "no-undef": "error",
+    "react-hooks/rules-of-hooks": "error",
+    "react-hooks/exhaustive-deps": "warn"
   }
 }

examples/.stylelintrc

@@ -0,0 +1,34 @@
+{
+  "ignoreFiles": ["**/*.js"],
+  "extends": "stylelint-config-standard",
+  "rules": {
+    "selector-pseudo-class-no-unknown": [
+      true,
+      {
+        "ignorePseudoClasses": [
+          "export",
+          "import",
+          "global",
+          "local"
+        ]
+      }
+    ],
+    "property-no-unknown": [
+      true,
+      {
+        "ignoreProperties": [
+          "composes",
+          "compose-with"
+        ]
+      }
+    ],
+    "at-rule-no-unknown": [
+      true,
+      {
+        "ignoreAtRules": [
+          "value"
+        ]
+      }
+    ]
+  }
+}