小编Jaw*_*kib的帖子

我正在学习react.js。我是这个话题的初学者。但是当我进行设置以创建反应环境时出现错误。我试图通过Charles Stover 在 Medium 上的博客来解决这个问题。但我得到了一个错误Command "up" not found。

这是我的 index.js 文件：

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import reportWebVitals from './reportWebVitals';
ReactDOM.render(
   <React.StrictMode>
      <App />
   </React.StrictMode>,
document.getElementById('root')
);
reportWebVitals();

我的 package.json 文件：

{
  "name": "myreact",
  "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",
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "react-scripts": "4.0.3",
    "web-vitals": "^1.0.1"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject", …