webpack.config.js

var webpack = require('webpack');

module.exports = {
  entry: [
    'webpack-dev-server/client?http://localhost:3000',
    'webpack/hot/only-dev-server',
    './src/index.js'
  ],
  devtool: 'inline-source-map',
  output: {
    path: __dirname + '/dist',
    publicPath: '/dist',
    filename: 'bundle.js'
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin()
  ],
  module: {
    loaders: [{
      test: /\.js$/,
      loaders: ['react-hot-loader', 'babel?presets[]=react,presets[]=es2015'],
      exclude: /node_modules/
    }]
  }
};