webpack.config.js

var webpack = require('webpack');
var path = require('path');
var OpenBrowserPlugin = require('open-browser-webpack-plugin');
var ExtractTextPlugin = require("extract-text-webpack-plugin");

module.exports = {
  devServer: {
    historyApiFallback: true,
    hot: true,
    inline: true,
    progress: true,
    contentBase: './app',
    port: 8080
  },
  devtool: 'source-map',
  entry: [
    'webpack-dev-server/client?http://localhost:8080',
    path.resolve(__dirname, 'app/main.js')
  ],
  output: {
    path: __dirname + '/build',
    publicPath: '/',
    filename: './bundle.js'
  },
  module: {
    loaders:[
      { test: /\.jsx?$/,
        include: path.resolve(__dirname, 'app'),
        exclude: /node_modules/,
        loader: 'babel-loader',
        query: {
          presets: ['es2015', 'stage-0', 'react']
        }
      },
      { test: /\.css$/, include: path.resolve(__dirname, 'app'), loader: 'style-loader!css-loader' },
      { test: /\.scss$/, loader: ExtractTextPlugin.extract({fallback: 'style-loader', use: 'css-loader?sourceMap!sass-loader?sourceMap'})},
    ]
  },
  resolve: {
    extensions: ['.js', '.jsx'],
  },
  plugins: [
    new ExtractTextPlugin({filename: 'main.css'}),
    new webpack.HotModuleReplacementPlugin(),
    new OpenBrowserPlugin({ url: 'http://localhost:8080' }),
    new webpack.LoaderOptionsPlugin({
      options: {
        sassLoader: {
          includePaths: [ 'app/style' ]
        },
        context: path.join(__dirname, 'src'),
        output: {
          path: path.join(__dirname, 'www')
    }
      }
    })
  ]
};