无法读取未定义的属性(正在读取&#39；OriginalPositionFor&#39；)

Cannot read properties of undefined (reading #39;originalPositionFor#39;)(无法读取未定义的属性(正在读取#39；OriginalPositionFor#39；))

问题描述

我是反应的初学者，刚刚开始讨论反应-路由器-避孕套教程。 首先，我使用npm i react-router-dom安装了REACTION-ROUTER-DOM 然后，在app.js中，我在函数头中使用默认代码，并在act-route-dom结构中调用此元素：

import logo from './logo.svg';
import './App.css';
import {  BrowserRouter as Router,Routes,Route} from "react-router-dom";

function App() {
  return (
    <Router>
    <Routes>
      <Route path="/" element={<Header />} />
    </Routes>
  </Router>
  );
}
export default App;
function Header(){
  return(
    <div className="App">
  <header className="App-header">
    <img src={logo} className="App-logo" alt="logo" />
    <p>Edit <code>src/App.js</code> and save to reload.</p>
    <a className="App-link" href="https://reactjs.org" target="_blank" rel="noopener noreferrer">
      Learn React
    </a>
  </header>
</div>
  );
  
}

当我使用npm start启动服务器时，收到以下错误：

log.js:59 Uncaught Error: Module build failed (from ./node_modules/babel-loader/lib/index.js):
TypeError: E:REACT TRAININGReactRouter
ode_moduleshistoryindex.js: Cannot read properties of undefined (reading 'originalPositionFor')
    at SourceMapTree.originalPositionFor (E:REACT TRAININGReactRoutermy-app
ode_modules@ampproject
emappingdist
emapping.umd.js:159:27)
    at trace (E:REACT TRAININGReactRoutermy-app
ode_modules@ampproject
emappingdist
emapping.umd.js:102:37)
    at EncodedSourceMapImpl.map (E:REACT TRAININGReactRoutermy-app
ode_modules@jridgewell	race-mappingdist	race-mapping.umd.js:347:36)
    at TraceMap.map (E:REACT TRAININGReactRoutermy-app
ode_modules@jridgewell	race-mappingdist	race-mapping.umd.js:430:31)
    at SourceMapTree.traceMappings (E:REACT TRAININGReactRoutermy-app
ode_modules@ampproject
emappingdist
emapping.umd.js:85:34)
    at remapping (E:REACT TRAININGReactRoutermy-app
ode_modules@ampproject
emappingdist
emapping.umd.js:258:36)
    at mergeSourceMap (E:REACT TRAININGReactRoutermy-app
ode_modules@babelcorelib	ransformationfilemerge-map.js:19:30)
    at generateCode (E:REACT TRAININGReactRoutermy-app
ode_modules@babelcorelib	ransformationfilegenerate.js:72:39)
    at run (E:REACT TRAININGReactRoutermy-app
ode_modules@babelcorelib	ransformationindex.js:55:33)
    at run.next (<anonymous>)
    at Object.../node_modules/history/index.js (http://localhost:3000/static/js/bundle.js:41373:7)
    at Object.options.factory (http://localhost:3000/static/js/bundle.js:46449:31)
    at __webpack_require__ (http://localhost:3000/static/js/bundle.js:45899:33)
    at fn (http://localhost:3000/static/js/bundle.js:46120:21)
    at Module.../node_modules/react-router-dom/index.js (http://localhost:3000/static/js/bundle.js:41527:65)
    at Module.options.factory (http://localhost:3000/static/js/bundle.js:46449:31)
    at __webpack_require__ (http://localhost:3000/static/js/bundle.js:45899:33)
    at fn (http://localhost:3000/static/js/bundle.js:46120:21)
    at Module../src/App.js (http://localhost:3000/static/js/bundle.js:68:74)
    at Module.options.factory (http://localhost:3000/static/js/bundle.js:46449:31)

 

我尝试查找各种来源，但找不到任何解决方案。

依赖项：dependencies": { "@testing-library/jest-dom": "^5.16.2", "@testing-library/react": "^12.1.2", "@testing-library/user-event": "^13.5.0", "react": "^17.0.2", "react-dom": "^17.0.2", "react-scripts": "5.0.0", "web-vitals": "^2.1.4" }

推荐答案

将@babel/core降级到以前的版本，已为我修复了该问题

npm i -D @babel/core@7.16.12

这篇关于无法读取未定义的属性(正在读取&#39；OriginalPositionFor&#39；)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！