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| 43aeb40b20 |
+32
-99
@@ -1,111 +1,44 @@
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import React from 'react'
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import { useMutation, QueryClientProvider, QueryClient } from '@tanstack/react-query'
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import PostAddForm from './components/PostAddForm'
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class ErrorBoundary extends React.Component {
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constructor(props) {
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super(props);
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this.state = {hasError: false};
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/*
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const mutation = useMutation({
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mutationFn: newUser => {
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fetch('https://jsonplaceholder.typicode.com/users', {
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method: 'GET',
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headers: {'Content-type':'application/json'},
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body: JSON.stringify(newUser),
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}).then(res => res.json())
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}
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static getDerivedStateFromError(error) {
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return { hasError: true }
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}
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componentDidCatch(error,info) {
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console.log(error,info);
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}
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handlerReset = () => {
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this.setState({hasError: false});
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}
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render() {
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if (this.state.hasError) {
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return (
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<div>
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<h1>Что то поломалось</h1>
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<button onClick={this.handlerReset}>Повторить</button>
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</div>)
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}
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return this.props.children;
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}
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}
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})
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*/
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class AdvancedErrorBoundary extends React.Component {
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constructor(props) {
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super(props);
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this.state = {
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hasError: false,
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error: null,
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errorInfo: null
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const createQueryClient = () => {
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new QueryClient({
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defaultOptions: {
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queries: {
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staleTime: 5 * 60*1000,
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retry: 1,
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gcTime: 10*60*1000,
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refetchOnWindowFocus: false,
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},
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mutations: {
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retry:0,
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onError: error => {console.error('Mutation error:',error.message)}
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}
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}
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}
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static getDerivedStateFromError(error) {
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return { hasErorr: true }
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}
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componentDidCatch(error, info) {
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this.setState({
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error: error,
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errorInfo: info
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})
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}
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handleReset = () => {
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this.setState({
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hasError:false,
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error: null,
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errorInfo:null
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});
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}
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render() {
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if(this.state.hasError) {
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console.log('Error');
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return (
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<div>
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<h2>Произошла ошибка</h2>
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<p>Извеняемся, работаем, исправляем. Разработчика привязали к батарее</p>
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<button onClick={this.handleReset}>Попробовать снова</button>
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</div>
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)
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}
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//Если ошибок нет, то рендрим дочерние объекты
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return this.props.children
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}
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}
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function ProblemComponent() {
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const [counter,setCounter] = React.useState(0)
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const handlerClick = () => setCounter(counter + 1)
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React.useEffect(() => {
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if (counter > 5) {
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throw new Error("Ошибка в компоненте");
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}
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},[counter]);
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return (
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<div>
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<h2>Счетчик: {counter}</h2>
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<button onClick={handlerClick}>Прибавить</button>
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</div>
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)
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})
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}
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function App() {
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return (
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<>
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<h1>Обработка ошибок в компонентах</h1>
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<ErrorBoundary>
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<ProblemComponent />
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</ErrorBoundary>
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<ErrorBoundary>
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<ProblemComponent />
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</ErrorBoundary>
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<ErrorBoundary>
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<ProblemComponent />
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</ErrorBoundary>
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{/* Добавьте тестовый контент для проверки */}
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<h1>Hello, React!</h1>
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<QueryClientProvider client={createQueryClient}>
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<PostAddForm />
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</QueryClientProvider>
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</>
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)
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}
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