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packages/react-devtools-shell/src/app/ErrorBoundaries/index.js
72 строки
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Jan Kassens
[flow] enable enforce_local_inference_annotations (#25921)
09 янв 2023, 23:46
Не верифицирован
09 янв 2023, 23:46
0b4f443
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/** * Copyright (c) Meta Platforms, Inc. and affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @flow */ import * as React from 'react'; import {Fragment} from 'react'; class ErrorBoundary extends React.Component { state: {hasError: boolean} = {hasError: false}; static getDerivedStateFromError(error: any): {hasError: boolean} { return {hasError: true}; } render(): any { const {hasError} = this.state; if (hasError) { return ( <div style={{ color: 'red', border: '1px solid red', borderRadius: '0.25rem', margin: '0.5rem', padding: '0.5rem', }}> An error was thrown. </div> ); } const {children} = this.props; return ( <div style={{ border: '1px solid gray', borderRadius: '0.25rem', margin: '0.5rem', padding: '0.5rem', }}> {children} </div> ); } } // $FlowFixMe[missing-local-annot] function Component({label}) { return <div>{label}</div>; } export default function ErrorBoundaries(): React.Node { return ( <Fragment> <h1>Nested error boundaries demo</h1> <ErrorBoundary> <Component label="Outer component" /> <ErrorBoundary> <Component label="Inner component" /> </ErrorBoundary> </ErrorBoundary> <ErrorBoundary> <Component label="Neighbour component" /> </ErrorBoundary> </Fragment> ); }