webpack.config.js

// See http://www.jonathan-petitcolas.com/2015/05/15/howto-setup-webpack-on-es6-react-application-with-sass.html

const path = require('path');
const webpack = require('webpack');
const autoprefixer = require('autoprefixer');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
  context: __dirname,
  devtool: 'inline-source-map',
  // devtool: 'eval',
  entry: [
      'webpack-dev-server/client?http://localhost:8080',
      'webpack/hot/only-dev-server',
      'react-hot-loader/patch',
      './src/index'
  ],
  output: {
    path: path.join(__dirname, 'build'),
    filename: 'app.js',
    publicPath: '/'
  },
  resolve: {
    extensions: ['', '.jsx', '.scss', '.js', '.json'],
    modulesDirectories: [
      'node_modules',
      path.resolve(__dirname, './node_modules')
    ]
  },
  module: {
    loaders: [
      {
        test: /(\.js|\.jsx)$/,
        include: [
            path.join(__dirname, 'src'),
            path.join(__dirname, 'test')
        ],
        loader: 'babel',
        query: {
            "presets": ["es2015-loose", "stage-0", "react"],
            "plugins": ["transform-runtime", "react-hot-loader/babel"]
        }
      },
      { test: /(\.js|\.jsx)$/, exclude: ["node_modules", "build"], loader: 'eslint-loader' },
	  {
        test: /(\.scss|\.css)$/,
        loader: ExtractTextPlugin.extract('style', 'css?sourceMap&modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!postcss!sass')
      }
    ]
  },
  postcss: [autoprefixer],
  sassLoader: {
      data: '@import "theme/_config.scss";',
      includePaths: [path.resolve(__dirname, './src')]
  },
  plugins: [
    new ExtractTextPlugin('react-toolbox.css', { allChunks: true }),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('development')
    })
  ]
};