ErrorBoundary

package-lock.json

@@ -8,7 +8,6 @@
       "name": "store-client",
       "version": "0.0.0",
       "dependencies": {
-        "immer": "^11.1.8",
         "react": "^19.1.0",
         "react-dom": "^19.1.0"
       },
@@ -2055,16 +2054,6 @@
         "node": ">= 4"
       }
     },
-    "node_modules/immer": {
-      "version": "11.1.8",
-      "resolved": "https://registry.npmjs.org/immer/-/immer-11.1.8.tgz",
-      "integrity": "sha512-/tbkHMW7y10Lx6i1crLjD4/OhNkRG+Fo7byZHtah0547nIeXYcpIXaUh0IAQY6gO5459qpGGYapcEOHtFXkIuA==",
-      "license": "MIT",
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/immer"
-      }
-    },
     "node_modules/import-fresh": {
       "version": "3.3.1",
       "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.3.1.tgz",

package.json

@@ -4,13 +4,12 @@
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "dev": "vite",
+    "dev": "vite", 
     "build": "vite build",
     "lint": "eslint .",
     "preview": "vite preview"
   },
   "dependencies": {
-    "immer": "^11.1.8",
     "react": "^19.1.0",
     "react-dom": "^19.1.0"
   },

src/App.jsx

@@ -1,49 +1,111 @@
-import React, { useState, useEffect } from 'react'
-import { produce } from 'immer'
+import React from 'react'
+
+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() {
-    const [tasks,setTasks] = useState([])
-    const [input,setInput] = useState('')
-    
-    const addTask = () => {
-        if(!input.trim()) return
-        
-        setTasks(currentTasks => produce(currentTasks, draft => {
-            draft.push({
-                id: Date.now(),
-                text: input.trim(),
-                done: false
-            })
-        }))
-        setInput('')
-    }
-    const toggleTask = id => {
-        setTasks(currentTask => produce(currentTask, draft => {
-            const task = draft.find(t => t.id === id)
-            if(task) {
-                task.done = !task.done
-            }
-        }))
-    }
-    const removeTask = id => {
-        setTasks(currentTask => produce(currentTask, draft => {
-            const index = draft.findIndex(t => t.id === id)
-            if (index !== -1)
-                draft.splice(index,1)
-        }))
-    }
 	return (
 		<>
-			<h1>Практика по созданию списка задач</h1>
-            <input value={input} onChange={e=>setInput(e.target.value)} />
-            <button onClick={addTask}>Добавить</button>
-        <ul>{tasks.map(({id,text,done}) => (
-                <li key={id} style={{ textDecoration: done ? 'line-through' : 'none'}}>
-                <input type="checkbox" checked={done} onChange={()=> toggleTask(id)} />
-                {text}
-                <button onClick={() => removeTask(id)}>Удалить</button>
-                </li>
-            ))}</ul>
+			<h1>Обработка ошибок в компонентах</h1>
+            <ErrorBoundary>
+                <ProblemComponent />
+            </ErrorBoundary>
+            <ErrorBoundary>
+                <ProblemComponent />
+            </ErrorBoundary>
+            <ErrorBoundary>
+                <ProblemComponent />
+            </ErrorBoundary>
 		</>
 	)
 }

src/MyComponent.jsx

@@ -1,8 +0,0 @@
-export function MyComponent() {
-    return (
-        <>
-        <h1>Hello</h1>
-        </>
-    )
-}
-export default MyComponent

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>
 )