Error: Can't resolve 'style-loader'

• 执行 webpack-dev-server，已经配置 'style-loader' 但还是报错：

 

 

 试着修改 webpack.config.js

从

use: [
    'style-loader',
    'css-loader'
]

改成

{test: /\.css$/, loader: "style-loader!css-loader" }

但是没有用！！！

• 最后下调 webpack-dev-server 版本，从 2.9.4 降为 2.9.0

最终 webpack.config.js

{
  "name": "webpackTest01",
  "version": "1.0.0",
  "devDependencies": {
    "css-loader": "^0.28.7",
    "file-loader": "^1.1.5",
    "style-loader": "^0.19.0",
    "url-loader": "^0.6.2",
    "webpack": "^3.8.1",
    "webpack-dev-server": "^2.9.0"
  }
}