webpack.config.js

var webpack = require('webpack');
var path = require('path');

module.exports = {
  entry: [
    'webpack-dev-server/client?http://127.0.0.1:8080/',
    'webpack/hot/only-dev-server',
    './src/index.js'
  ],
  output: {
    path: __dirname,
    publicPath: '/',
    filename: 'bundle.js'
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin()
  ], 
  module: {
    loaders: [{
      exclude: /node_modules/,
      loaders: ['react-hot', 'babel?presets[]=react,presets[]=es2015,presets[]=stage-1'], 
    }]
  },
  resolve: {
    extensions: ['', '.js', '.jsx']
  },
  devServer: {
    historyApiFallback: true,
    contentBase: './'
  }
};