webpack.config.js

const path = require('path');
const TerserPlugin = require('terser-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');

let config = {
    entry: './src/index.tsx',
    module: {
        rules: [
            {
                test: /\.tsx?$/,
                use: 'ts-loader',
                exclude: /node_modules/
            }, {
                test: /\.scss$/,
                use: [
                    MiniCssExtractPlugin.loader,
                    'css-loader',
                    'sass-loader'
                ]
            }, {
                test: /\.md$/,
                use: [
                    'html-loader',
                    {
                        loader: 'markdown-loader',
                        options: {
                            headerIds: false,
                        }
                    },
                ],
            }
        ]
    },
    resolve: {
        extensions: ['.tsx', '.ts', '.js']
    },
    output: {
        filename: 'script.js',
        path: path.resolve(__dirname, 'public/build')
    },
    optimization: {
        minimizer: [
            new TerserPlugin({cache: true, parallel: true}),
            new OptimizeCssAssetsPlugin({})
        ]
    },
    plugins: [
        new MiniCssExtractPlugin({
            filename: '[name].css',
            chunkFilename: '[id].css'
        })
    ]
};

module.exports = (env, argv) => {
    if (argv.mode === 'development') {
        config.devtool = 'inline-source-map';
    }

    return config;
};