webpack.prod.js

const path = require('path');

const CleanWebpackPlugin = require('clean-webpack-plugin'); //installed via npm
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');

const buildPath = path.resolve(__dirname, 'dist');

module.exports = {
    devtool: 'source-map',
    entry: './src/index.js',
    output: {
        filename: '[name].js',
        path: buildPath
    },
    resolve: {
        extensions: ['.ts', '.tsx', '.js']
    },
    module: {
        rules: [{
                test: /\.js$/,
                exclude: /node_modules/,
                loader: 'babel-loader'
            },
            {
                test: /\.(scss|css|sass)$/,
                use: [{
                        loader: MiniCssExtractPlugin.loader
                    },
                    {
                        // translates CSS into CommonJS
                        loader: 'css-loader',
                        options: {
                            sourceMap: true
                        }
                    },
                    {
                        // Runs compiled CSS through postcss for vendor prefixing
                        loader: 'postcss-loader',
                        options: {
                            sourceMap: true
                        }
                    },
                    {
                        // compiles Sass to CSS
                        loader: 'sass-loader',
                        options: {
                            outputStyle: 'expanded',
                            sourceMap: true,
                            sourceMapContents: true
                        }
                    }
                ]
            },
            {
                // Load all images as base64 encoding if they are smaller than 8192 bytes
                test: /\.(png|jpg|gif)$/,
                use: [{
                    loader: 'url-loader',
                    options: {
                        name: '[name].[hash:20].[ext]',
                        limit: 8192
                    }
                }]
            },
            {
                // Load all icons
                test: /\.(eot|woff|woff2|svg|ttf)([\?]?.*)$/,
                use: [{
                    loader: 'file-loader',
                }]
            }
        ]
    },
    plugins: [
        // new HtmlWebpackPlugin({
        //     template: './index.html',
        //     // Inject the js bundle at the end of the body of the given template
        //     inject: 'body',
        // }),
        new CleanWebpackPlugin(buildPath),
        // new MiniCssExtractPlugin({
        //     filename: 'styles.[contenthash].css'
        // }),
        // new OptimizeCssAssetsPlugin({
        //     cssProcessor: require('cssnano'),
        //     cssProcessorOptions: {
        //         map: {
        //             inline: false,
        //         },
        //         discardComments: {
        //             removeAll: true
        //         },
        //         discardUnused: false
        //     },
        //     canPrint: true
        // })
    ]
};