i dont know

src/App.jsx

@@ -1,67 +1,45 @@
-import React, { useState, useReducer, useRef, memo } from 'react'
+import { useMutation, QueryClientProvider, QueryClient } from '@tanstack/react-query'
+import PostAddForm from './components/PostAddForm'
 
-function tasksReducer(state, action) {
-    switch(action.type) {
-        case 'ADD_TASK':
-            return [...state, action.payload]
-        case 'TOGGLE_TASK':
-            return state.map(task => task.id === action.payload ? {...task, complite: !task.complite} : task)
-        case 'REMOVE_TASK':
-            return state.filter(task => task.id !== action.payload)
-        default:
-            return state
+/*
+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())
     }
+})
+*/
+
+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)}
+            }
+        }
+    })
 }
 
-const TaskList = memo(function TaskList({tasks, onToggle, onRemove}) {
-    console.log("Rendred")
-    return (
-        <ul>
-        {tasks.map(({id, text, complite}) => (
-                <li key={id}
-                    style={{textDecoration: complite ? 'line-through' : 'none' }}>
-                    <input type="checkbox" checked={complite} onChange={()=>onToggle(id)} />
-                    {text}
-                    <button onClick={()=> onRemove(id)} style={{marginLeft: 10}}>
-                        Удалить
-                    </button>
-                </li>
-            ))}
-        </ul>
-    )
-})
-
 function App() {
-    const [tasks, dispatch] = useReducer(tasksReducer,[])
-    const [input,setInput] = useState('')
-    const [error,setError] = useState('')
-    const inputRef = useRef(null)
-    
-    const addTask = () => {
-        if (input.trim() === '') {
-            setError('Пустой текст задачи')
-            return
-        }
-        setError('')
-        dispatch({
-            type: 'ADD_TASK',
-            payload: {id: Date.now(), text: input.trim(), complite: false }
-        })
-        setInput('')
-        inputRef.current.focus()
-    }
-    
 	return (
-		<div style={{padding: 20}}>
-			<h1>Список дел</h1>
-			<input ref={inputRef} value={input} onChange={e => setInput(e.target.value)} />
-			<button onClick={addTask}>Добавить</button>
-            {error && <p style={{color: 'red'}}>{error}</p>}
+		<>
+			{/* Добавьте тестовый контент для проверки */}
+			<h1>Hello, React!</h1>
+        <QueryClientProvider client={createQueryClient}>
+            <PostAddForm />
+        </QueryClientProvider>
             
-            <TaskList tasks={tasks} 
-                onToggle={id => dispatch({type: 'TOGGLE_TASK', payload: id})}
-                onRemove={id => dispatch({type: 'REMOVE_TASK', payload: id})} />
-		</div>
+		</>
 	)
 }