Сделали useReducer для счетчика

src/App.jsx

@@ -1,58 +1,50 @@
-import React from 'react'
+import { useState, useReducer } from 'react'
 
-class RandomUser extends React.Component {
+function counterReducer(state, action) {
-    constructor(props) {
+    switch (action.type) {
-        super(props)
+        case 'increment':
-        this.state = { user: {} }
+            return state + 1
-    }
+        case 'decrement':
-    
+            return state - 1
-    componentDidMount() {
+        case 'reset':
-        fetch('https://randomuser.me/api')
+            return 0
-        .then(responce => responce.json())
+        case 'set_value':
-        .then(json => this.setState({ user: json.results[0] }));
+            return action.value
-        console.log('смонтирован')
+        default:
-    }
+            return state
-    
-    componentDidUpdate(prevProps,prevState) {
-        console.log(this.state);
-        console.log('Компонент обнвлен')
-    }
-    
-    componentWillUnmount() {
-        console.log('Компонент таймера размонтирован')
-    }
-    
-    render() {
-        return <div>
-            {this.state.user && 
-                this.state.user.name &&
-                (
-                <>
-                    <h2>{this.state.user.name.first} {this.state.user.name.last}</h2>
-                    <img src={this.state.user.picture.medium} />
-                    <button onClick={() => {
-                        console.log('Загружаем ... ')
-                        fetch('https://randomuser.me/api')
-                        .then(responce => responce.json())
-                        .then(json => this.setState({ user: json.results[0] }));
-                    }}>Загрузить нового</button>
-                </>
-                )
-            }
-            </div>
     }
 }
 
+function Counter() {
+    const [count, dispatch] = useReducer(counterReducer,0);
+    
+    return (
+        <div>
+            <span>Счетчик: {count}</span>
+            <button onClick={()=> dispatch({type: 'increment'})}>+</button>
+            <button onClick={()=> dispatch({type: 'decrement'})}>-</button>
+            <button onClick={()=> dispatch({type: 'reset'})}>reset</button>
+            <button onClick={()=> dispatch({type: 'set_value', value: 5})}>set 5</button>
+        </div>
+    )
+}
+
 function App() {
-    const [showClock, setShowClock] = React.useState(true);
+    const [tasks, setTasks] = useState([])
+    const [filter, setFilter] = useState('all')
+    const [sortBy,setSortBy] = useState('date')
+    
+    const addTask = newTask => {
+        setTasks([...tasks,newTask])
+    }
+    
+    
     
 	return (
 		<>
-			<h1>Домашнее задание: жизненый цикл</h1>
+			{/* Добавьте тестовый контент для проверки */}
-            <button onClick={()=> setShowClock(!showClock)}>
+			<h1>Hello, React!</h1>
-                {showClock ? 'Скрыть часы' : 'Показать часы' }
+            <Counter />
-            </button>
-            {showClock && <RandomUser />}
 		</>
 	)
 }

src/App.module.scss

@@ -0,0 +1,15 @@
+.container {
+/*    display: flex;
+    flex-direction: column;
+    flex-wrap: nowrap;*/
+    height: 500px;
+    overflow: auto;
+    border: 1px solid black;
+}
+.item {
+    font-size: 16pt;
+    border: 1px dotted gray;
+    /*margin: 5px 10px;
+    padding: 10px;*/
+    border-radius: 5px;
+}

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>
 )