Webpack没有将scss编译为css

Question

我正在使用 webpack、babel 和 Sass 构建应用程序。一切正常，但 sass 文件没有编译 css 文件，即使它没有抛出任何错误。 我与此相关的包裹是：

"webpack": "^3.10.0",

"css-loader": "^0.28.9",

"extract-text-webpack-plugin": "^3.0.2",

"glob-all": "^3.1.0",

"node-sass": "^4.7.2",

"purify-css": "^1.2.5",

"purifycss-webpack": "^0.7.0",

"sass-loader": "^6.0.6"

webpack.config.js:

var path = require('path');
var webpack = require('webpack');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
const glob = require('glob-all');
var PurifyCSSPlugin= require('purifycss-webpack'); 

module.exports = {
  entry: './src/js/index.js',
  output: {
    path: __dirname,
    filename: 'dist/js/bundle.js'
  },
  watch: true,
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['env', 'stage-3'],
          }
        }
      },
      {
        test:/\.css$/,
        use: ExtractTextPlugin.extract({
          use: [ 
            {
              loader: 'css-loader',
              options: {
                url: false
              }
            }
          ]
        })
      },
      {
        test:/\.scss$/,
        use: ExtractTextPlugin.extract({
          use: [ 
            {
              loader: 'css-loader',
              options: {
                url: false
              }
            },
            'sass-loader'
          ]
        })
      }
    ]
  },

  plugins: [
    new ExtractTextPlugin({
      filename: './dist/css/styles.css'
    }),
    new PurifyCSSPlugin({
      paths: glob.sync([
        path.join(__dirname, 'dist/index.html'),
        path.join(__dirname, 'src/js/*.js')
      ])
    })
  ]
}

文件目录： This is my project Files Directory

Answer 1

test:/\.scss$/,
    use: ExtractTextPlugin.extract({
      use: [ 
        {
          loader: ['style-loader', 'css-loader', 'sass-loader']
          options: {
            url: false
          }
        },
      ]
    })