webpack.config.prod.js

const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
	entry: './src/main.js',
	output: {
		path: __dirname + '/dist',
		filename: 'bundle.js'
	},
	module: {
		rules: [
			{
				test: /\.js$/,
				exclude: /node_modules/,
				loader: 'babel-loader'
			},
      {
        test: /\.css$/,
        use: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: 'css-loader'
       })
      }
		]
	},
	plugins: [
		new ExtractTextPlugin('style.css'),
		new HtmlWebpackPlugin({
			inject: true,
			template: './src/index.html',
			minify: {
				removeComments: true,
				collapseWhitespace: true,
				removeRedundantAttributes: true,
				useShortDoctype: true,
				removeEmptyAttributes: true,
				removeStyleLinkTypeAttributes: true,
				keepClosingSlash: true,
				minifyJS: true,
				minifyCSS: true,
				minifyURLs: true
			}
		}),
		new webpack.DefinePlugin({ 'process.env.NODE_ENV': '"production"' })
	]
};