webpack.config.test.js

const webpack = require('webpack');
const autoprefixer = require('autoprefixer');

module.exports = {
  module: {
    loaders: [
      {
        test: /\.js$/,
        exclude: /(node_modules)/,
        loader: 'babel'
      }, {
        test: /\.(scss|css)$/,
        loader: 'style!css?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!postcss!sass'
      }
    ]
  },
  resolve: {
    extensions: ['', '.scss', '.js', '.json'],
    packageMains: ['browser', 'web', 'browserify', 'main', 'style']
  },
  watch: true,
  postcss: [autoprefixer],
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('test')
    })
  ]
};