webpack.config.prod.js

// For info about this file refer to webpack and webpack-hot-middleware documentation
// For info on how we're generating bundles with hashed filenames for cache busting: https://medium.com/@okonetchnikov/long-term-caching-of-static-assets-with-webpack-1ecb139adb95#.w99i89nsz
import webpack from 'webpack';
import ExtractTextPlugin from 'extract-text-webpack-plugin';
import WebpackMd5Hash from 'webpack-md5-hash';
import HtmlWebpackPlugin from 'html-webpack-plugin';
import autoprefixer from 'autoprefixer';
import CopyWebpackPlugin from 'copy-webpack-plugin';
import path from 'path';

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

export default {
	resolve: {
		extensions: ['*', '.js', '.jsx', '.json']
	},
	devtool: 'source-map', // more info:https://webpack.github.io/docs/build-performance.html#sourcemaps and https://webpack.github.io/docs/configuration.html#devtool
	entry: path.resolve(__dirname, 'src/index'),
	target: 'web', // necessary per https://webpack.github.io/docs/testing.html#compile-and-test
	output: {
		path: path.resolve(__dirname, 'dist'),
		publicPath: '/',
		filename: '[name].[chunkhash].js'
	},
	plugins: [
		// Hash the files using MD5 so that their names change when the content changes.
		new WebpackMd5Hash(),

		// Tells React to build in prod mode. https://facebook.github.io/react/downloads.html
		new webpack.DefinePlugin(GLOBALS),

		// Generate an external css file with a hash in the filename
		new ExtractTextPlugin('[name].[contenthash].css'),

		// Generate HTML file that contains references to generated bundles. See here for how this works: https://github.com/ampedandwired/html-webpack-plugin#basic-usage
		new HtmlWebpackPlugin({
			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
			},
			inject: true
		}),

		// Minify JS
		new webpack.optimize.UglifyJsPlugin({ sourceMap: true }),

		new webpack.LoaderOptionsPlugin({
			minimize: true,
			debug: false,
			noInfo: true, // set to false to see a list of every file being bundled.
			options: {
				sassLoader: {
					includePaths: [path.resolve(__dirname, 'src', 'scss')]
				},
				context: '/'
			}
		}),
		new CopyWebpackPlugin([
			{
				from: 'node_modules/monaco-editor/min/vs',
				to: 'vs'
			}
		])
	],
	module: {
		rules: [
			{
				test: /\.jsx?$/,
				exclude: /node_modules/,
				loader: 'babel-loader',
				query: {
					presets: ['react', 'es2015', 'stage-2']
				}
			},
			{
				test: /\.eot(\?v=\d+.\d+.\d+)?$/,
				loader: 'url-loader?name=[name].[ext]'
			},
			{
				test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/,
				loader:
					'url-loader?limit=10000&mimetype=application/font-woff&name=[name].[ext]'
			},
			{
				test: /\.[ot]tf(\?v=\d+.\d+.\d+)?$/,
				loader:
					'url-loader?limit=10000&mimetype=application/octet-stream&name=[name].[ext]'
			},
			{
				test: /\.svg(\?v=\d+.\d+.\d+)?$/,
				loader:
					'url-loader?limit=10000&mimetype=image/svg+xml&name=[name].[ext]'
			},
			{
				test: /\.(jpe?g|png|gif)$/i,
				loader: 'file-loader?name=[name].[ext]'
			},
			{ test: /\.ico$/, loader: 'file-loader?name=[name].[ext]' },
			{
				test: /(\.css|\.scss|\.sass)$/,
				loader: ExtractTextPlugin.extract(
					'css-loader?sourceMap!sass-loader?sourceMap'
				)
			}
		]
	}
};