Сделали практику с кнопками Увеличить Уменьшить счетчик

package.json

@@ -10,9 +10,9 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "info": "^1.0.0",
     "react": "^19.1.0",
-    "react-dom": "^19.1.0",
-    "react-router-dom": "^7.17.0"
+    "react-dom": "^19.1.0"
   },
   "devDependencies": {
     "@eslint/js": "^9.25.0",
@@ -23,6 +23,8 @@
     "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-refresh": "^0.4.19",
     "globals": "^16.0.0",
+    "sass": "^1.99.0",
+    "sass-embedded": "^1.99.0",
     "vite": "^6.3.5"
   }
 }

src/App.jsx

@@ -1,28 +1,30 @@
-import { Suspense, lazy } from 'react'
-import { BrowserRouter, Routes, Route } from 'react-router-dom'
+import styles from './styles/App.module.scss'
+import React, { useState, useCallback } from 'react'
 
-const HomePage = lazy(() => import('./pages/HomePage'))
-const AboutPage = lazy(() => import('./pages/AboutPage'))
-const ContactPage = lazy(() => import('./pages/ContactPage'))
-const AdminPanel = lazy(() => import('./pages/AdminPanel'))
+function CounterButton({label, onClick}) {
+    return (
+        <button onClick={onClick} className={styles.counter_button}>{label}</button>
+    )
+}
+function CounterDisplay({value}) {
+    return (<div className={styles.counter_display}>
+            Значение счетчика: <b>{value}</b>
+    </div>)
+}
 
 function App() {
+    const [counter,setCounter] = useState(0);
+    
+    const increment = () => setCounter(prev => prev + 1);
+    const decrement = () => setCounter(prev => prev - 1);
+    
 	return (
-		<BrowserRouter>
-		    <div>
-                <nav><a href='/'>Главная</a> <a href='/about'>О нас</a> <a href='/contact'>Контакты</a></nav>
-                <main>
-                    <Suspense fallback={<div>Загрузка ...</div>}>
-                        <Routes>
-                            <Route path='/' element={<HomePage />} />
-                            <Route path='/about' element={<AboutPage />} />
-                            <Route path='/contact' element={<ContactPage />} />
-                            <Route path='/admin' element={<AdminPanel />} />
-                        </Routes>
-                    </Suspense>
-                </main>
-		    </div>
-		</BrowserRouter>
+		<>
+            <h2>Практика по созданию счетчика с колбэками</h2>
+            <CounterButton label="Увеличить" onClick={increment} />
+            <CounterButton label="уменьшить" onClick={decrement} />
+            <CounterDisplay value={counter} />
+		</>
 	)
 }
 

src/pages/AboutPage.jsx

@@ -1,9 +0,0 @@
-export function MyComponent() {
-    return (
-        <>
-        <h1>About Page</h1>
-        </>
-        )
-}
-
-export default MyComponent

src/pages/AdminPanel.jsx

@@ -1,9 +0,0 @@
-export function MyComponent() {
-    return (
-        <>
-        <h1>Admin Page</h1>
-        </>
-        )
-}
-
-export default MyComponent

src/pages/ContactPage.jsx

@@ -1,9 +0,0 @@
-export function MyComponent() {
-    return (
-        <>
-        <h1>Contact Page</h1>
-        </>
-        )
-}
-
-export default MyComponent

src/pages/HomePage.jsx

@@ -1,9 +0,0 @@
-export function MyComponent() {
-    return (
-        <>
-        <h1>Home Page</h1>
-        </>
-        )
-}
-
-export default MyComponent