webpack.config.prod.js

import webpack from 'webpack';
import path from 'path';
import ExtractTextPlugin from 'extract-text-webpack-plugin';
import { ADMIN_PREFIX } from './src/constants';

const GLOBALS = {
  'process.env.NODE_ENV': JSON.stringify('production'),
  __DEV__: false
};

export default {
  debug: true,
  devtool: 'source-map', // more info:https://webpack.github.io/docs/build-performance.html#sourcemaps and https://webpack.github.io/docs/configuration.html#devtool
  noInfo: true, // set to false to see a list of every file being bundled.
  entry: './src/index',
  target: 'web', // necessary per https://webpack.github.io/docs/testing.html#compile-and-test
  output: {
    path: `${__dirname}/lib/jekyll-admin/public`,
    publicPath: `${ADMIN_PREFIX}/`,
    filename: 'bundle.js'
  },
  plugins: [
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.DefinePlugin(GLOBALS), // Tells React to build in prod mode. https://facebook.github.io/react/downloads.html
    new ExtractTextPlugin('styles.css'),
    new webpack.optimize.DedupePlugin(),
    new webpack.optimize.UglifyJsPlugin()
  ],
  module: {
    loaders: [
      {test: /\.js$/, include: path.join(__dirname, 'src'), loaders: ['babel']},
      {test: /\.eot(\?v=\d+.\d+.\d+)?$/, loader: 'file'},
      {test: /\.(woff|woff2)(\?.*$|$)/, loader: 'file-loader?prefix=font/&limit=30000'},
      {test: /\.ttf(\?v=\d+.\d+.\d+)?$/, loader: 'file-loader?limit=10000&mimetype=application/octet-stream'},
      {test: /\.svg(\?v=\d+.\d+.\d+)?$/, loader: 'file-loader?limit=10000&mimetype=image/svg+xml'},
      {test: /\.(jpe?g|png|gif)$/i, loaders: ['file']},
      {test: /\.ico$/, loader: 'file-loader?name=[name].[ext]'},
      {
        test: /(\.css|\.scss)$/,
        loader: ExtractTextPlugin.extract('css?sourceMap!sass?sourceMap')
      }
    ]
  }
};