用过的纱线安装reactstrap，但出现“无法解决'reactstrap'”错误

Question

我使用yarn安装了bootstrap，react-popper和reactstrap，但是页面显示以下错误“无法解析'reactstrap'”。

我的package.json看起来像这样：

{
  "name": "confusion",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^4.2.4",
    "@testing-library/react": "^9.3.2",
    "@testing-library/user-event": "^7.1.2",
    "bootstrap": "^4.5.0",
    "react": "^16.13.1",
    "react-dom": "^16.13.1",
    "react-popper": "^2.2.3",
    "react-scripts": "3.4.1",
    "reactstrap": "^8.4.1"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

这是我编码App.js的方式：

import React from 'react';
import logo from './logo.svg';
import { Navbar, NavbarBrand } from 'reactstrap'
import './App.css';

function App() {
  return (
    <div className="App">
      <Navbar dark color="primary">
        <div className="container">
          <NavbarBrand href="/">Ristorante Con Fusion</NavbarBrand>
        </div>
      </Navbar>
    </div>
  );
}

export default App;

如何获取显示boostrap navbar的页面？谢谢。

Answer 1

这是我从同班同学那里得到的解决方案，它解决了这个问题。该应用程序现在可以使用。

1. Reboot pc.

2.Delete node_modules folder.

3. In terminal run command 'yarn cache clean'

4. Delete 'package-lock.json', 'yarn.lock' files but keep "package.json'

5. In terminal run command 'yarn install'

6. In terminal run command 'yarn start'