webpack + babel + react hot loader config file

webpack.config.js

'use strict';

const webpack = require('webpack');

module.exports = {
  entry: [
    'webpack-dev-server/client?http://0.0.0.0:8080', // WDS host
    'webpack/hot/only-dev-server', // not sure what this does
    './entry.js'
  ],
  output: {
    path: __dirname,
    filename: 'bundle.js'
  },
  module: {
    loaders: [
      {
        test: /\.css$/,
        loader: 'style!css' 
      },
      {
        test: /\.scss$/,
        loader: 'style!css!sass'
      },
      { 
        test: /\.jsx?$/,
        exclude: /node_modules/,
        loader: 'react-hot'
      },
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        query: {
          presets: ['es2015', 'react', 'stage-0']
        }
      }
    ]
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin() // Remove this if using babel-eslint
  ]
};