webpack.config.babel.js

var cssnext = require('postcss-cssnext');
var postcssFocus = require('postcss-focus');
var postcssReporter = require('postcss-reporter');

var cssModulesIdentName = '[name]__[local]__[hash:base64:5]';
if (process.env.NODE_ENV === 'production') {
  cssModulesIdentName = '[hash:base64]';
}

module.exports = {
  output: {
    publicPath: '/',
    libraryTarget: 'commonjs2',
  },
  resolve: {
    extensions: ['', '.js', '.jsx'],
    modules: [
      'client',
      'node_modules',
    ],
  },
  module: {
    loaders: [
      {
        test: /\.css$/,
        exclude: /node_modules/,
        loader: 'style-loader!css-loader?localIdentName=' + cssModulesIdentName + '&modules&importLoaders=1&sourceMap!postcss-loader',
      },
      {
        test: /\.jpe?g$|\.gif$|\.png$|\.svg$/i,
        loader: 'url-loader?limit=10000',
      },
    ],
  },
  postcss: () => [
    postcssFocus(),
    cssnext({
      browsers: ['last 2 versions', 'IE > 10'],
    }),
    postcssReporter({
      clearMessages: true,
    }),
  ],
};