{
  "name": "shop_mall",
  "version": "1.0.0",
  "description": "前端项目",
  "main": "webpack.config.js",
  "scripts": {
    "dev": "./node_modules/.bin/webpack-dev-server",
    "dev_win": "./node_modules/.bin/webpack-dev-server",
    "dist": "WEBPACK_ENV=online ./node_modules/.bin/webpack -p",
    "dist_win": "set WEBPACK_ENV=online&& ./node_modules/.bin/webpack -p"
  },
  "dependencies": {
    "webpack-cli": "^3.3.7",
    "webpack": "^4.39.3"
  },
  "devDependencies": {
    "css-loader": "^3.2.0",
    "extract-text-webpack-plugin": "^4.0.0-beta.0",
    "file-loader": "^4.2.0",
    "html-loader": "^0.5.5",
    "html-webpack-plugin": "^3.2.0",
    "style-loader": "^1.0.0",
    "url-loader": "^2.1.0",
    "webpack-dev-server": "^3.8.0"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "git@gitee.com:lqgod/shop-mall.git"
  },
  "author": "Tony",
  "license": "ISC"
}

报错为
npm ERR! missing script : dev_win