webpack.config.babel.js

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

module.exports = {
  entry: [
    'react-hot-loader/patch',
    'webpack-dev-server/client?http://localhost:8080/', // WebpackDevServer host and port
    'webpack/hot/only-dev-server', // "only" prevents reload on syntax errors
    './src/main.jsx',
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    publicPath: '/dist/',
    filename: 'bundle.js',
    chunkFilename: '[id].bundle.js',
    library: 'app/bundle',
    libraryTarget: 'amd',
  },
  resolve: {
    modules: [path.resolve(__dirname, '/src'), 'node_modules/'],
    descriptionFiles: ['package.json'],
    extensions: ['.js', '.jsx'],
  },
  externals: /^esri/,
  devtool: '#inline-source-map',
  devServer: {
    inline: true,
    port: 8080,
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NamedModulesPlugin(),
  ],
  module: {
    loaders: [
      {
        enforce: 'pre',
        test: /\.jsx?$/,
        loader: 'eslint-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        loaders: ['style-loader', 'css-loader'],
      },
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        query: {
          presets: ['es2015', 'react'],
        },
      },
    ],
  },
};