labo-components/webpack_envs/webpack.production.js

B&G UI components

const path = require('path');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const BUILD_DIR = path.resolve(__dirname, '../dist');
const APP_DIR = path.resolve(__dirname, '../app');
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');//https://github.com/webpack-contrib/css-minimizer-webpack-plugin
const TerserPlugin = require('terser-webpack-plugin'); //https://webpack.js.org/plugins/terser-webpack-plugin/

module.exports = {
    entry: ["@babel/polyfill", APP_DIR + '/index.jsx'],
    output: {
        path: BUILD_DIR,
        filename: 'labo-components.js',
        libraryTarget: 'umd',
        library: 'labo'
    },
    optimization: {
        minimize: true,
        minimizer: [
            new TerserPlugin({
                parallel: true,
                terserOptions: {
                    compress: {toplevel : true},
                    mangle: {}, // Note `mangle.properties` is `false` by default.
                    keep_fnames: true //deprecated apparently
                }
            }),
            new CssMinimizerPlugin()
        ],
    },
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                exclude: [
                    path.resolve(__dirname, 'node_modules'),
                    path.resolve(__dirname, 'dist'),
                    path.resolve(__dirname, '__tests__'),
                    path.resolve(__dirname, 'sass'),
                    path.resolve(__dirname, 'webpack_envs'),
                    path.resolve(__dirname, '.github')

                ],
                loader: "babel-loader"
            },
            {
                test: /\.woff($|\?)|\.woff2($|\?)|\.ttf($|\?)|\.eot($|\?)|\.svg($|\?)|\.gif($|\?)/,
                loader: 'url-loader'
            },
            {
                test: /\.scss$/,
                use: [
                    MiniCssExtractPlugin.loader,
                    {
                        loader: "css-loader"
                    },
                    "sass-loader"
                ]
            }
        ]
    },
    resolve: {
        extensions: ['.js', '.jsx']
    },
    performance: {
        maxEntrypointSize: 4096000,
        maxAssetSize: 4096000
    },
    plugins: [
        new MiniCssExtractPlugin({
            filename: "labo-components.css"
        })
    ]
};