webpack.parts.js

const ExtractTextPlugin = require('extract-text-webpack-plugin');
const PurifyCSSPlugin = require('../');

exports.extractCSS = function extractCSS(paths) {
  return {
    module: {
      rules: [
        {
          test: /\.css$/,
          include: paths,
          loader: ExtractTextPlugin.extract({
            fallbackLoader: 'style-loader',
            loader: 'css-loader?sourceMap'
          })
        }
      ]
    },
    plugins: [
      new ExtractTextPlugin('[name].css')
    ]
  };
};

exports.purifyCSS = function purifyCSS(
  paths,
  extensions,
  purifyOptions
) {
  return {
    plugins: [
      new PurifyCSSPlugin({ paths, extensions, purifyOptions })
    ]
  };
};