webpack.config.js

const webpack = require('webpack');
const path = require('path');
var nodeModules = path.resolve(path.join(__dirname, 'node_modules'));

module.exports = {
  entry: path.join(__dirname, 'src', 'app-client.js'),
  output: {
    path: path.join(__dirname, 'src', 'static', 'js'),
    filename: 'bundle.js'
  },
  watch: true,
  module: {
    preLoaders: [
          { test: /\.json$/, loader: "json-loader"}
        ],
    loaders: [
      {
        test: path.join(__dirname, 'src'),
        loader: ['babel-loader'],
        query: {
          cacheDirectory: 'babel_cache',
          presets: ['react', 'es2015', "stage-0"]
        }
      },
      {
        test: /\.scss$/,
        loaders: [ 'style', 'css', 'sass' ]
      }
  ]
  },
  sassLoader: {
    includePaths: [ 'src/static/styles' ]
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
    }),
    new webpack.optimize.DedupePlugin(),
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.optimize.UglifyJsPlugin({
      compress: { warnings: false },
      mangle: true,
      sourcemap: false,
      beautify: false,
      dead_code: true
    })
  ]
};