i dont know

src/App.jsx

@@ -1,60 +1,45 @@
-import { memo, useState, useMemo } from 'react'
+import { useMutation, QueryClientProvider, QueryClient } from '@tanstack/react-query'
+import PostAddForm from './components/PostAddForm'
 
-function memoize(fn) {
-    const cache = new Map();
-    return function(...args) {
-        const key = JSON.stringify(args);
-        if (cache.has(key)) {
-            return cache.get(key);
-        }
-        const result = fn.apply(this, args);
-        cache.set(key,result);
-        return result;
+/*
+const mutation = useMutation({
+    mutationFn: newUser => {
+        fetch('https://jsonplaceholder.typicode.com/users', {
+            method: 'GET',
+            headers: {'Content-type':'application/json'},
+            body: JSON.stringify(newUser),
+        }).then(res => res.json())
     }
-}
+})
+*/
 
-function fibonachi(n, memo={}) {
-    if (n in memo) {console.log(n);return memo[n];}
-    if (n <= 1) return 1;
-    memo[n] = fibonachi(n-1, memo) + fibonachi(n - 2, memo);
-    return memo[n];
-}
-
-const MyComponent = ({ value }) => {
-    console.log('Rendring');
-    return <div>{value}</div>
-}
-
-const MemoizedComponent = memo(MyComponent);
-
-const Child = memo(({ children }) => {
-    console.log('Child component rendred');
-    return <div>{children}</div>;
-});
-
-const Parent = () => {
-    const [count,setCount] = useState(0);
-    const [text, setText] = useState('');
-    
-    const stableChild = useMemo(() => <span>Memo text</span>,[]);
-    
-    return (
-        <>
-            <Child>
-                {stableChild}
-            </Child>
-            <input type="text" onChange={(e) => setText(e.target.value)} value={text} />
-            <button onClick={() => setCount(count + 1)}>Increment {count}</button>
-        </>
-    )
+const createQueryClient = () => {
+    new QueryClient({
+        defaultOptions: {
+            queries: {
+                staleTime: 5 * 60*1000,
+                retry: 1,
+                gcTime: 10*60*1000,
+                refetchOnWindowFocus: false,
+            },
+            mutations: {
+                retry:0,
+                onError: error => {console.error('Mutation error:',error.message)}
+            }
+        }
+    })
 }
 
 function App() {
 	return (
 		<>
+			{/* Добавьте тестовый контент для проверки */}
 			<h1>Hello, React!</h1>
-            <Parent />
-        </>
+        <QueryClientProvider client={createQueryClient}>
+            <PostAddForm />
+        </QueryClientProvider>
+            
+		</>
 	)
 }
 

src/main.jsx

@@ -4,5 +4,7 @@ import { createRoot } from 'react-dom/client'
 import App from './App.jsx'
 
 createRoot(document.getElementById('root')).render(
+	<StrictMode>
 		<App />
+	</StrictMode>
 )