webpack.config.js

const loaders = [{
  test: /\.jsx?$/,         // Match both .js and .jsx files
  exclude: /node_modules/,
  loader: "babel",
  query:
    {
      presets: ["react", "es2015"]
    }
},
  {
    test: /\.css$/,
    loader: "style-loader!css-loader"
  }, {
    test: /\.png$/,
    loader: "url-loader?limit=100000"
  }, {
    test: /\.jpg$/,
    loader: "file-loader"
  }, {
    test: /\.(woff|woff2)(\?v=\d+\.\d+\.\d+)?$/,
    loader: 'url?limit=10000&mimetype=application/font-woff'
  }, {
    test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/,
    loader: 'url?limit=10000&mimetype=application/octet-stream'
  }, {
    test: /\.eot(\?v=\d+\.\d+\.\d+)?$/,
    loader: 'file'
  }, {
    test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
    loader: 'url?limit=10000&mimetype=image/svg+xml'
  }
]

module.exports = [{
  entry: "./index.js",
  output: {
    path: './build',       // target dir
    filename: "bundle.js",
    publicPath: "/build/" // path in URL
  },
  module: {
    loaders: loaders
  }
},
  {
    entry: "./styleguide.js",
    output: {
      path: './styleguideBuild',       // target dir
      filename: "styleguideBundle.js",
      publicPath: "/styleguideBuild/" // path in URL
    },
    module: {
      loaders: loaders
    }
  }]