问Webpack配置未压缩所有css库

EN

const webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');

module.exports = {
  devtool: 'cheap-module-eval-source-map',
  entry: [
    'bootstrap-loader',
    'webpack-hot-middleware/client',
    './src/index'
  ],
  output: {
    publicPath: '/dist/'
  },
  module: {
    rules: [
      {
        test: /\.scss$/,
        use: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: [
            {
              loader: 'css-loader',
              options: {
                sourceMap: true,
                localIdentName: '[path][name]--[local]'
              }
            },
            {
              loader: 'postcss-loader',
              options: { sourceMap: true }
            },
            {
              loader: 'sass-loader',
              options: { sourceMap: true }
            }
          ]
        })
      }
    ]
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
          NODE_ENV: '"development"',
      },
      __DEVELOPMENT__: true
    }),
    new ExtractTextPlugin('bundle.css'),
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin(),
    new webpack.ProvidePlugin({
        jQuery: 'jquery'
    }),
    new OptimizeCSSAssetsPlugin({ // minify css
      cssProcessorOptions: { // enable css external source maps output, you must set devtool: 'source-map'
        map: {
          inline: false,
          annotation: true
        }
      }
    })
  ]
};