ErrorBoundary

2026-05-28 21:41:57 +03:00
7 changed files with 108 additions and 119 deletions
@@ -9,8 +9,7 @@
      "version": "0.0.0",
      "dependencies": {
        "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",
@@ -1601,19 +1600,6 @@
      "dev": true,
      "license": "MIT"
    },
-    "node_modules/cookie": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-1.1.1.tgz",
-      "integrity": "sha512-ei8Aos7ja0weRpFzJnEA9UHJ/7XQmqglbRwnf2ATjcB9Wq874VKH9kfjjirM6UhU2/E5fFYadylyhFldcqSidQ==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/express"
-      }
-    },
    "node_modules/cross-spawn": {
      "version": "7.0.6",
      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
@@ -2485,44 +2471,6 @@
        "node": ">=0.10.0"
      }
    },
-    "node_modules/react-router": {
-      "version": "7.17.0",
-      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.17.0.tgz",
-      "integrity": "sha512-FDELK7rTMlCHO5+reyXsPlmfr7N1F91lPHsWYfMEGQm/KQ+F4JFM8jGoeQDmDvdTs93Fw9aSilH+uKRb4/jXvQ==",
-      "license": "MIT",
-      "dependencies": {
-        "cookie": "^1.0.1",
-        "set-cookie-parser": "^2.6.0"
-      },
-      "engines": {
-        "node": ">=20.0.0"
-      },
-      "peerDependencies": {
-        "react": ">=18",
-        "react-dom": ">=18"
-      },
-      "peerDependenciesMeta": {
-        "react-dom": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/react-router-dom": {
-      "version": "7.17.0",
-      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.17.0.tgz",
-      "integrity": "sha512-fyU2yjGups/hE6Xz0I5ZYbVL8Gx29eCjgpHaRaTaVU+OOAdfRX05KsvyRm0GO8YQwOkhpU3MurW1jyMUJn+zSw==",
-      "license": "MIT",
-      "dependencies": {
-        "react-router": "7.17.0"
-      },
-      "engines": {
-        "node": ">=20.0.0"
-      },
-      "peerDependencies": {
-        "react": ">=18",
-        "react-dom": ">=18"
-      }
-    },
    "node_modules/resolve-from": {
      "version": "4.0.0",
      "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",
@@ -2596,12 +2544,6 @@
        "semver": "bin/semver.js"
      }
    },
-    "node_modules/set-cookie-parser": {
-      "version": "2.7.2",
-      "resolved": "https://registry.npmjs.org/set-cookie-parser/-/set-cookie-parser-2.7.2.tgz",
-      "integrity": "sha512-oeM1lpU/UvhTxw+g3cIfxXHyJRc/uidd3yK1P242gzHds0udQBYzs3y8j4gCCW+ZJ7ad0yctld8RYO+bdurlvw==",
-      "license": "MIT"
-    },
    "node_modules/shebang-command": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
@@ -4,15 +4,14 @@
  "version": "0.0.0",
  "type": "module",
  "scripts": {
-    "dev": "vite",
+    "dev": "vite", 
    "build": "vite build",
    "lint": "eslint .",
    "preview": "vite preview"
  },
  "dependencies": {
    "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",
@@ -1,28 +1,112 @@
-import { Suspense, lazy } from 'react'
-import { BrowserRouter, Routes, Route } from 'react-router-dom'
+import React 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'))
+class ErrorBoundary extends React.Component {
+    constructor(props) {
+        super(props);
+        this.state = {hasError: false};
+    }
+    
+    static getDerivedStateFromError(error) {
+        return { hasError: true }
+    }
+    
+    componentDidCatch(error,info) {
+        console.log(error,info);
+    }
+    
+    handlerReset = () => {
+        this.setState({hasError: false});
+    }
+    
+    render() {
+        if (this.state.hasError) {
+            return (
+                <div>
+                    <h1>Что то поломалось</h1>
+                    <button onClick={this.handlerReset}>Повторить</button>
+                </div>)
+        }
+        return this.props.children;
+    }
+}
+
+class AdvancedErrorBoundary extends React.Component {
+    constructor(props) {
+        super(props);
+        this.state = {
+            hasError: false,
+            error: null,
+            errorInfo: null
+        }
+    }
+    
+    static getDerivedStateFromError(error) {
+        return { hasErorr: true }
+    }
+    
+    componentDidCatch(error, info) {
+        this.setState({ 
+            error: error,
+            errorInfo: info
+        })
+    }
+    
+    handleReset = () => {
+        this.setState({
+            hasError:false,
+            error: null,
+            errorInfo:null
+        });
+    }
+    
+    render() {
+        if(this.state.hasError) {
+            console.log('Error');
+            return (
+                <div>
+                    <h2>Произошла ошибка</h2>
+                    <p>Извеняемся, работаем, исправляем. Разработчика привязали к батарее</p>
+                    <button onClick={this.handleReset}>Попробовать снова</button>
+                </div>
+            )
+        }
+        //Если ошибок нет, то рендрим дочерние объекты
+        return this.props.children
+    }
+}
+
+function ProblemComponent() {
+    const [counter,setCounter] = React.useState(0)
+    
+    const handlerClick = () => setCounter(counter + 1)
+    
+    React.useEffect(() => {
+        if (counter > 5) {
+            throw new Error("Ошибка в компоненте");
+        }
+    },[counter]);
+    return (
+        <div>
+            <h2>Счетчик: {counter}</h2>
+            <button onClick={handlerClick}>Прибавить</button>
+        </div>
+    )
+}

 function App() {
 	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>
+		<>
+			<h1>Обработка ошибок в компонентах</h1>
+            <ErrorBoundary>
+                <ProblemComponent />
+            </ErrorBoundary>
+            <ErrorBoundary>
+                <ProblemComponent />
+            </ErrorBoundary>
+            <ErrorBoundary>
+                <ProblemComponent />
+            </ErrorBoundary>
+		</>
 	)
 }

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