webpack.config.js

const webpack = require('webpack');
const path = require('path');
const HtmlwebpackPlugin = require('html-webpack-plugin');
const ROOT_PATH = path.resolve(__dirname);

module.exports = {
  devtool: process.env.NODE_ENV === 'production' ? '' : 'source-map',
  entry: [
    path.resolve(ROOT_PATH,'app/src/index')
  ],
  module: {
    preLoaders: [
      {
        test: /\.jsx?$/,
        loaders: process.env.NODE_ENV === 'production' ? [] : ['eslint'],
        include: path.resolve(ROOT_PATH, './app')
      }
    ],
    loaders: [{
      test: /\.jsx?$/,
      exclude: /node_modules/,
      loaders: ['react-hot', 'babel']
    },
    {
      test: /\.scss$/,
      loaders: ['style','css','sass']
    }]
  },
  resolve: {
    extensions: ['', '.js', '.jsx']
  },
  output: {
    path: process.env.NODE_ENV === 'production' ? path.resolve(ROOT_PATH, 'app/dist') : path.resolve(ROOT_PATH, 'app/build'),
    publicPath: '/',
    filename: 'bundle.js',
  },
  devServer: {
    contentBase: path.resolve(ROOT_PATH, 'app/build'),
    historyApiFallback: true,
    hot: true,
    inline: true,
    progress: true
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new HtmlwebpackPlugin({
      title: 'React BoilerPlate'
    })
  ]
};