webpack.config.js

var webpack = require('webpack');
var path = require('path');
var fs = require('fs');
var HtmlWebpackPlugin = require('html-webpack-plugin');

var BUILD_DIR = path.resolve(__dirname, 'public', 'dist');
var APP_DIR = path.resolve(__dirname, 'src');

var google_analytics = process.env.NODE_ENV === 'production' ? fs.readFileSync('src/google_analytics.html') : null;

var config = {
  entry: APP_DIR + '/index.js',
  module: {
    loaders: [
      {
        test : /\.js$/,
        include : APP_DIR,
        loader : 'babel-loader',
        query: {
          presets: ['es2015', 'react', 'stage-2']
        }
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './src/index.ejs',
      google_analytics: google_analytics,
      filename: path.resolve(__dirname, 'public', 'index.html')
    })
  ],
  output: {
    path: BUILD_DIR,
    filename: '[name].[chunkhash].js',
  },
  devServer: {
    contentBase: path.join(__dirname, "public"),
    publicPath: "/dist/",
    port: 9000,
    historyApiFallback: true
  }
};

module.exports = config;