webpack.config.js

const BundleAnalyzerPlugin = require('webpack-bundle-analyzer')
  .BundleAnalyzerPlugin;
const path = require('path');
const webpack = require('webpack');
const analyze = !!process.env.ANALYZE_ENV;
const env = process.env.NODE_ENV || 'development';
const webpackConfig = {
  name: 'dotabot',
  target: 'web',

  entry: ['babel-polyfill', './js/index.js'],

  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        loader: 'babel-loader'
      },
      {
        test: /(\.css$)/,
        include: /node_modules/,
        loaders: ['style-loader', 'css-loader']
      },
      {
        test: /\.(png|woff|woff2|eot|ttf|svg)$/,
        loader: 'url-loader?limit=100000'
      }
    ]
  },

  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify(env)
      }
    })
  ],
  output: {
    path: __dirname + '/static',
    filename: 'bundle.js'
  },
  resolve: {
    modules: [path.resolve('src'), 'node_modules'],
    extensions: ['.js', '.jsx']
  }
};

if (analyze) {
  webpackConfig.plugins.push(new BundleAnalyzerPlugin());
}

if (env === 'production') {
  webpackConfig.plugins.push(
    new webpack.LoaderOptionsPlugin({
      minimize: true,
      debug: false
    }),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        unused: true,
        dead_code: true,
        warnings: false
      }
    })
  );
}

module.exports = webpackConfig;