我最近在遵循YouTube教程的同时尝试设置React应用。 我浏览了其他文章，但找不到确切的语法问题。 Here is an image of my the various folders and files that make up the project

webpack -d && copy src/index.html dist/index.html && webpack-dev-server --content-base src/ --inline"

这是我的package.json文件

{
  "name": "reactenv","version": "1.0.0","description": "React Enviroment","main": "index.js","scripts": {
    "start": "npm run build","build": "webpack -d && copy src/index.html dist/index.html && webpack-dev-server --content-base src/ --inline","build:prod": "webpack -p && copy src/index.html dist/index.html"
  },"keywords": [
    "reactjs"
  ],"author": "Lee Warner","license": "ISC","dependencies": {
    "react": "^16.12.0","react-dom": "^16.12.0"
  },"devDependencies": {
    "babel-loader": "^8.0.6","babel-preset-es2016": "^6.24.1","babel-preset-react": "^6.24.1","babel-preset-stage-2": "^6.24.1","webpack": "^4.41.2","webpack-cli": "^3.3.10","webpack-dev-server": "^3.9.0"
  }
}