fix(syntax): 🔧 upgrade syntax

Author: umstek

.postcssrc

@@ -1,7 +1,7 @@
 {
   "plugins": {
-    "postcss-import": true,
-    "tailwindcss": true,
-    "postcss-nested": true
+    "postcss-import": {},
+    "tailwindcss/nesting": {},
+    "tailwindcss": {}
   }
 }

src/main.ts

@@ -1,5 +1,8 @@
-import * as React from "react";
-import * as ReactDOM from "react-dom";
+import React from "react";
+import ReactDOM from "react-dom/client";
+
 import { App } from "./views/App";
 
-ReactDOM.render(React.createElement(App), document.getElementById("app"));
+ReactDOM.createRoot(document.getElementById("app")!).render(
+  React.createElement(App)
+);