webpack.prod.js

const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
//used css-minimizer as optimize-css-assets was not supported in Webpack > 5 anymore
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');
//add Workbox for working with service workers
const WorkboxPlugin = require('workbox-webpack-plugin');

module.exports = {
    mode: 'production',
    entry: './src/client/index.js',
    output: {
        libraryTarget: 'var',
        library: 'Client',
        path: path.resolve(__dirname, 'dist'),
        filename: 'main.js'
    },
    stats: 'verbose',
    optimization: {
        minimizer: [new TerserPlugin({}), new CssMinimizerPlugin({})]
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: "babel-loader"
            },
            {
                test: /\.scss$/,
                use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader']
            }
        ]
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: "./src/client/views/index.html",
            filename: "./index.html"
        }),
        new MiniCssExtractPlugin({filename: '[name].css'}),
        new WorkboxPlugin.GenerateSW()
    ]
}