From 4fab451bcdd99a9bb7d23a0e8bab7b84463d48c3 Mon Sep 17 00:00:00 2001 From: gaopeng Date: Wed, 7 Jul 2021 11:16:18 +0800 Subject: [PATCH] :sparkles: fake-react-error-boundary --- fake-react-error-boundary/.gitignore | 23 +++ fake-react-error-boundary/README.md | 46 ++++++ fake-react-error-boundary/package.json | 43 +++++ fake-react-error-boundary/public/favicon.ico | Bin 0 -> 3870 bytes fake-react-error-boundary/public/index.html | 43 +++++ fake-react-error-boundary/public/logo192.png | Bin 0 -> 5347 bytes fake-react-error-boundary/public/logo512.png | Bin 0 -> 9664 bytes .../public/manifest.json | 25 +++ fake-react-error-boundary/public/robots.txt | 3 + fake-react-error-boundary/src/App.css | 38 +++++ fake-react-error-boundary/src/App.test.tsx | 9 + fake-react-error-boundary/src/App.tsx | 26 +++ .../src/ErrorBoundary.tsx | 156 ++++++++++++++++++ .../src/examples/ErrorBoundary.tsx | 45 +++++ .../src/examples/index.tsx | 103 ++++++++++++ fake-react-error-boundary/src/index.css | 13 ++ fake-react-error-boundary/src/index.tsx | 17 ++ fake-react-error-boundary/src/logo.svg | 1 + .../src/react-app-env.d.ts | 1 + .../src/reportWebVitals.ts | 15 ++ fake-react-error-boundary/src/setupTests.ts | 5 + fake-react-error-boundary/tsconfig.json | 26 +++ 22 files changed, 638 insertions(+) create mode 100644 fake-react-error-boundary/.gitignore create mode 100644 fake-react-error-boundary/README.md create mode 100644 fake-react-error-boundary/package.json create mode 100644 fake-react-error-boundary/public/favicon.ico create mode 100644 fake-react-error-boundary/public/index.html create mode 100644 fake-react-error-boundary/public/logo192.png create mode 100644 fake-react-error-boundary/public/logo512.png create mode 100644 fake-react-error-boundary/public/manifest.json create mode 100644 fake-react-error-boundary/public/robots.txt create mode 100644 fake-react-error-boundary/src/App.css create mode 100644 fake-react-error-boundary/src/App.test.tsx create mode 100644 fake-react-error-boundary/src/App.tsx create mode 100644 fake-react-error-boundary/src/ErrorBoundary.tsx create mode 100644 fake-react-error-boundary/src/examples/ErrorBoundary.tsx create mode 100644 fake-react-error-boundary/src/examples/index.tsx create mode 100644 fake-react-error-boundary/src/index.css create mode 100644 fake-react-error-boundary/src/index.tsx create mode 100644 fake-react-error-boundary/src/logo.svg create mode 100644 fake-react-error-boundary/src/react-app-env.d.ts create mode 100644 fake-react-error-boundary/src/reportWebVitals.ts create mode 100644 fake-react-error-boundary/src/setupTests.ts create mode 100644 fake-react-error-boundary/tsconfig.json diff --git a/fake-react-error-boundary/.gitignore b/fake-react-error-boundary/.gitignore new file mode 100644 index 0000000..4d29575 --- /dev/null +++ b/fake-react-error-boundary/.gitignore @@ -0,0 +1,23 @@ +# See https://help.github.com/articles/ignoring-files/ for more about ignoring files. + +# dependencies +/node_modules +/.pnp +.pnp.js + +# testing +/coverage + +# production +/build + +# misc +.DS_Store +.env.local +.env.development.local +.env.test.local +.env.production.local + +npm-debug.log* +yarn-debug.log* +yarn-error.log* diff --git a/fake-react-error-boundary/README.md b/fake-react-error-boundary/README.md new file mode 100644 index 0000000..b58e0af --- /dev/null +++ b/fake-react-error-boundary/README.md @@ -0,0 +1,46 @@ +# Getting Started with Create React App + +This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app). + +## Available Scripts + +In the project directory, you can run: + +### `yarn start` + +Runs the app in the development mode.\ +Open [http://localhost:3000](http://localhost:3000) to view it in the browser. + +The page will reload if you make edits.\ +You will also see any lint errors in the console. + +### `yarn test` + +Launches the test runner in the interactive watch mode.\ +See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information. + +### `yarn build` + +Builds the app for production to the `build` folder.\ +It correctly bundles React in production mode and optimizes the build for the best performance. + +The build is minified and the filenames include the hashes.\ +Your app is ready to be deployed! + +See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information. + +### `yarn eject` + +**Note: this is a one-way operation. Once you `eject`, you can’t go back!** + +If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project. + +Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own. + +You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it. + +## Learn More + +You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started). + +To learn React, check out the [React documentation](https://reactjs.org/). diff --git a/fake-react-error-boundary/package.json b/fake-react-error-boundary/package.json new file mode 100644 index 0000000..d1271d5 --- /dev/null +++ b/fake-react-error-boundary/package.json @@ -0,0 +1,43 @@ +{ + "name": "fake-react-error-boundary", + "version": "0.1.0", + "private": true, + "dependencies": { + "@testing-library/jest-dom": "^5.11.4", + "@testing-library/react": "^11.1.0", + "@testing-library/user-event": "^12.1.10", + "@types/jest": "^26.0.15", + "@types/node": "^12.0.0", + "@types/react": "^17.0.0", + "@types/react-dom": "^17.0.0", + "react": "^17.0.2", + "react-dom": "^17.0.2", + "react-scripts": "4.0.3", + "typescript": "^4.1.2", + "web-vitals": "^1.0.1" + }, + "scripts": { + "start": "react-scripts start", + "build": "react-scripts build", + "test": "react-scripts test", + "eject": "react-scripts eject" + }, + "eslintConfig": { + "extends": [ + "react-app", + "react-app/jest" + ] + }, + "browserslist": { + "production": [ + ">0.2%", + "not dead", + "not op_mini all" + ], + "development": [ + "last 1 chrome version", + "last 1 firefox version", + "last 1 safari version" + ] + } +} diff --git a/fake-react-error-boundary/public/favicon.ico b/fake-react-error-boundary/public/favicon.ico new file mode 100644 index 0000000000000000000000000000000000000000..a11777cc471a4344702741ab1c8a588998b1311a GIT binary patch literal 3870 zcma);c{J4h9>;%nil|2-o+rCuEF-(I%-F}ijC~o(k~HKAkr0)!FCj~d>`RtpD?8b; 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HcmV?d00001 diff --git a/fake-react-error-boundary/public/manifest.json b/fake-react-error-boundary/public/manifest.json new file mode 100644 index 0000000..080d6c7 --- /dev/null +++ b/fake-react-error-boundary/public/manifest.json @@ -0,0 +1,25 @@ +{ + "short_name": "React App", + "name": "Create React App Sample", + "icons": [ + { + "src": "favicon.ico", + "sizes": "64x64 32x32 24x24 16x16", + "type": "image/x-icon" + }, + { + "src": "logo192.png", + "type": "image/png", + "sizes": "192x192" + }, + { + "src": "logo512.png", + "type": "image/png", + "sizes": "512x512" + } + ], + "start_url": ".", + "display": "standalone", + "theme_color": "#000000", + "background_color": "#ffffff" +} diff --git a/fake-react-error-boundary/public/robots.txt b/fake-react-error-boundary/public/robots.txt new file mode 100644 index 0000000..e9e57dc --- /dev/null +++ b/fake-react-error-boundary/public/robots.txt @@ -0,0 +1,3 @@ +# https://www.robotstxt.org/robotstxt.html +User-agent: * +Disallow: diff --git a/fake-react-error-boundary/src/App.css b/fake-react-error-boundary/src/App.css new file mode 100644 index 0000000..74b5e05 --- /dev/null +++ b/fake-react-error-boundary/src/App.css @@ -0,0 +1,38 @@ +.App { + text-align: center; +} + +.App-logo { + height: 40vmin; + pointer-events: none; +} + +@media (prefers-reduced-motion: no-preference) { + .App-logo { + animation: App-logo-spin infinite 20s linear; + } +} + +.App-header { + background-color: #282c34; + min-height: 100vh; + display: flex; + flex-direction: column; + align-items: center; + justify-content: center; + font-size: calc(10px + 2vmin); + color: white; +} + +.App-link { + color: #61dafb; +} + +@keyframes App-logo-spin { + from { + transform: rotate(0deg); + } + to { + transform: rotate(360deg); + } +} diff --git a/fake-react-error-boundary/src/App.test.tsx b/fake-react-error-boundary/src/App.test.tsx new file mode 100644 index 0000000..2a68616 --- /dev/null +++ b/fake-react-error-boundary/src/App.test.tsx @@ -0,0 +1,9 @@ +import React from 'react'; +import { render, screen } from '@testing-library/react'; +import App from './App'; + +test('renders learn react link', () => { + render(); + const linkElement = screen.getByText(/learn react/i); + expect(linkElement).toBeInTheDocument(); +}); diff --git a/fake-react-error-boundary/src/App.tsx b/fake-react-error-boundary/src/App.tsx new file mode 100644 index 0000000..a53698a --- /dev/null +++ b/fake-react-error-boundary/src/App.tsx @@ -0,0 +1,26 @@ +import React from 'react'; +import logo from './logo.svg'; +import './App.css'; + +function App() { + return ( + + ); +} + +export default App; diff --git a/fake-react-error-boundary/src/ErrorBoundary.tsx b/fake-react-error-boundary/src/ErrorBoundary.tsx new file mode 100644 index 0000000..071a2d2 --- /dev/null +++ b/fake-react-error-boundary/src/ErrorBoundary.tsx @@ -0,0 +1,156 @@ +import React, { ErrorInfo } from 'react'; +// https://github.com/Haixiang6123/my-react-error-bounday +// https://stackoverflow.com/questions/58123398/when-to-use-jsx-element-vs-reactnode-vs-reactelement +// An ReactElement is a plain object describing a component instance or DOM node and its desired properties +// A ReactNode is a ReactElement, a ReactFragment, a string, a number or an array of ReactNodes, or null, or undefined, or a boolean: +// JSX.Element is a ReactElement, with the generic type for props and type being any. + + +// 出错后显示的元素类型 +type FallbackElement = React.ReactElement | null; + +// 出错后显示元素的 props +interface FallbackProps { + error: Error | null; + resetErrorboundary: (...args: Array) => void; +} + +declare function FallbackRender( + props: FallbackProps, +): FallbackElement; + +interface IErrorBoundaryProps { + fallback?: FallbackElement; // 一段 ReactElement + // typeof 获取变量声明 + fallbackRender?: typeof FallbackRender; + FallbackComponent?: React.ComponentType; + onError?: (error: Error, info: string) => void; + onReset?: () => void; + resetKeys?: Array; + onResetKeysChange?: ( + prevResetKeys: Array | undefined, + resetKeys: Array | undefined, + ) => void +} +interface IErrorBoundaryState { + error: Error | null; +} + +// React.PropsWithChildren +// 相当于 +// type PropsWithChildren = T & { +// children?: ReactNode +// } + +// 检查 resetKeys 是否有变化 +const changedArray = (a: Array = [], b: Array = []) => { + return a.length !== b.length || a.some((item, index) => !Object.is(item, b[index])); +} + +class ErrorBoundary extends React.Component, IErrorBoundaryState> { + state = { + error: null, + }; + updatedWithError = false; + + static getDerivedStateFromError(error: Error) { + return { + error, + }; + } + + reset() { + this.updatedWithError = false; + this.setState({ error: null }); + } + + resetErrorboundary = () => { + if (this.props.onReset) { + this.props.onReset(); + } + + this.reset(); + } + + componentDidCatch(error: Error, errorInfo: ErrorInfo) { + if (this.props.onError) { + this.props.onError(error, errorInfo.componentStack); + } + } + + componentDidMount() { + const { error } = this.state; + + if (error !== null) { + this.updatedWithError = true; + } + } + + componentDidUpdate(prevProps: Readonly>) { + const { error } = this.state; + const { resetKeys, onResetKeysChange } = this.props; + console.log(error, this.updatedWithError, prevProps.resetKeys, resetKeys, changedArray(prevProps.resetKeys, resetKeys)); + + // 非常巧妙的处理，防止由于第一次 error 的 render 导致重新 render + if (error !== null && !this.updatedWithError) { + this.updatedWithError = true; + return; + } + + if (error !== null && changedArray(prevProps.resetKeys, resetKeys)) { + if (onResetKeysChange) { + onResetKeysChange(prevProps.resetKeys, resetKeys); + } + this.reset(); + } + } + + render() { + const { error } = this.state; + const { fallback, fallbackRender, FallbackComponent } = this.props; + + if (error !== null) { + const props: FallbackProps = { + error, + resetErrorboundary: this.resetErrorboundary, + } + if (React.isValidElement(fallback)) { + return fallback; + } else if (typeof fallbackRender === 'function') { + return fallbackRender(props); + } else if (FallbackComponent) { + return + } + throw new Error('ErrorBoundary 组件需要传入 fallback, fallbackRender, FallbackComponent 其中一个'); + } + return this.props.children; + } +} + +function withErrorBoundary

(Component: React.ComponentType

, errorBoundaryProps: IErrorBoundaryProps): React.ComponentType

{ + const Wrapped: React.ComponentType

= (props) => { + return ( + + + + ) + } + + // DevTools 显示的组件名 + const name = Component.displayName || Component.name || 'Unknown'; + Wrapped.displayName = `withErrorBoundary(${name})`; + + return Wrapped; +} + +function useErrorHandler

( + givenError: P | undefined | null, +): React.Dispatch> { + const [error, setError] = React.useState

(null); + if (givenError) throw givenError; // 初始有错误时，直接抛出 + if (error) throw error; // 后来再有错误，也直接抛出 + return setError; // 返回开发者可手动设置错误的钩子 +} + +export { withErrorBoundary, useErrorHandler }; +export default ErrorBoundary; diff --git a/fake-react-error-boundary/src/examples/ErrorBoundary.tsx b/fake-react-error-boundary/src/examples/ErrorBoundary.tsx new file mode 100644 index 0000000..f2b89e2 --- /dev/null +++ b/fake-react-error-boundary/src/examples/ErrorBoundary.tsx @@ -0,0 +1,45 @@ +import React, { ErrorInfo } from 'react'; + +// 官网用法 +class ErrorBoundary extends React.Component { + state = { + hasError: false, + } + + static getDerivedStateFromError() { + // 更新 state，使下一次更新 UI 时渲染错误 + return { + hasError: true, + }; + } + + componentDidCatch(error: Error, errorInfo: ErrorInfo) { + console.log('error', error, errorInfo); + } + + render() { + if (this.state.hasError) { + return

Something went wrong.

; + } + return this.props.children; + } +} + +class Demo extends React.Component { + componentDidMount() { + throw new Error('error'); + } + render() { + return <>App; + } +} + +console.log('Demo', Demo); + +export function App() { + return ( + + + + ) +} diff --git a/fake-react-error-boundary/src/examples/index.tsx b/fake-react-error-boundary/src/examples/index.tsx new file mode 100644 index 0000000..5ca5498 --- /dev/null +++ b/fake-react-error-boundary/src/examples/index.tsx @@ -0,0 +1,103 @@ +import React from 'react'; +import ErrorBoundary from '../ErrorBoundary'; + +// class Demo extends React.Component { +// state = { +// number: 1, +// } +// // constructor(props: any) { +// // super(props); +// // this.setup(); +// // } +// componentDidMount() { +// throw new Error('Demo'); +// } +// // setup() { +// // console.log('this', this); +// // this.componentDidMount = function() { +// // console.log(3); +// // } +// // } +// handleClick = () => { +// if (this.state.number > 5) { +// throw new Error('Demo'); +// } +// this.setState({ +// number: this.state.number + 1, +// }); +// } + +// render() { +// return
demo-{this.state.number}
; +// } +// } + +// console.log('Demo', Demo); + +interface FallbackProps { + error: Error | null; + resetErrorboundary: (...args: Array) => void; +} + + +// class ErrorFallback extends React.Component { +// render() { +// return ( +// <> +// ErrorFallback +// +// +// ) +// } +// } + +// class App extends React.Component { +// onError = () => { +// console.error('error'); +// } +// onReset = () => { +// console.log('重置成功'); +// } +// render() { +// return ( +// +// +// +// ) +// } +// } + +function ErrorFallback({ error, resetErrorboundary }: FallbackProps) { + return ( +
+

Something went wrong:

+ 
{error?.message}
+ +
+ ) +} + +function Bomb(): JSX.Element { + throw new Error('💥 CABOOM 💥') +} + +function App() { + const [explode, setExplode] = React.useState(false) + return ( +
+ + setExplode(false)} + resetKeys={[explode]} + > + {explode ? : null} + +
+ ) +} + +export default App; diff --git a/fake-react-error-boundary/src/index.css b/fake-react-error-boundary/src/index.css new file mode 100644 index 0000000..ec2585e --- /dev/null +++ b/fake-react-error-boundary/src/index.css @@ -0,0 +1,13 @@ +body { + margin: 0; + font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', + 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', + sans-serif; + -webkit-font-smoothing: antialiased; + -moz-osx-font-smoothing: grayscale; +} + +code { + font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', + monospace; +} diff --git a/fake-react-error-boundary/src/index.tsx b/fake-react-error-boundary/src/index.tsx new file mode 100644 index 0000000..c7919e1 --- /dev/null +++ b/fake-react-error-boundary/src/index.tsx @@ -0,0 +1,17 @@ +import React from 'react'; +import ReactDOM from 'react-dom'; +import './index.css'; +import App from './examples/index'; +import reportWebVitals from './reportWebVitals'; + +ReactDOM.render( + + + , + document.getElementById('root') +); + +// If you want to start measuring performance in your app, pass a function +// to log results (for example: reportWebVitals(console.log)) +// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals +reportWebVitals(); diff --git a/fake-react-error-boundary/src/logo.svg b/fake-react-error-boundary/src/logo.svg new file mode 100644 index 0000000..9dfc1c0 --- /dev/null +++ b/fake-react-error-boundary/src/logo.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/fake-react-error-boundary/src/react-app-env.d.ts b/fake-react-error-boundary/src/react-app-env.d.ts new file mode 100644 index 0000000..6431bc5 --- /dev/null +++ b/fake-react-error-boundary/src/react-app-env.d.ts @@ -0,0 +1 @@ +/// diff --git a/fake-react-error-boundary/src/reportWebVitals.ts b/fake-react-error-boundary/src/reportWebVitals.ts new file mode 100644 index 0000000..49a2a16 --- /dev/null +++ b/fake-react-error-boundary/src/reportWebVitals.ts @@ -0,0 +1,15 @@ +import { ReportHandler } from 'web-vitals'; + +const reportWebVitals = (onPerfEntry?: ReportHandler) => { + if (onPerfEntry && onPerfEntry instanceof Function) { + import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => { + getCLS(onPerfEntry); + getFID(onPerfEntry); + getFCP(onPerfEntry); + getLCP(onPerfEntry); + getTTFB(onPerfEntry); + }); + } +}; + +export default reportWebVitals; diff --git a/fake-react-error-boundary/src/setupTests.ts b/fake-react-error-boundary/src/setupTests.ts new file mode 100644 index 0000000..8f2609b --- /dev/null +++ b/fake-react-error-boundary/src/setupTests.ts @@ -0,0 +1,5 @@ +// jest-dom adds custom jest matchers for asserting on DOM nodes. +// allows you to do things like: +// expect(element).toHaveTextContent(/react/i) +// learn more: https://github.com/testing-library/jest-dom +import '@testing-library/jest-dom'; diff --git a/fake-react-error-boundary/tsconfig.json b/fake-react-error-boundary/tsconfig.json new file mode 100644 index 0000000..a273b0c --- /dev/null +++ b/fake-react-error-boundary/tsconfig.json @@ -0,0 +1,26 @@ +{ + "compilerOptions": { + "target": "es5", + "lib": [ + "dom", + "dom.iterable", + "esnext" + ], + "allowJs": true, + "skipLibCheck": true, + "esModuleInterop": true, + "allowSyntheticDefaultImports": true, + "strict": true, + "forceConsistentCasingInFileNames": true, + "noFallthroughCasesInSwitch": true, + "module": "esnext", + "moduleResolution": "node", + "resolveJsonModule": true, + "isolatedModules": true, + "noEmit": true, + "jsx": "react-jsx" + }, + "include": [ + "src" + ] +}
+
+ logo +

+ Edit src/App.tsx and save to reload. +

+ + Learn React + +
+