webpack.production.config.ts

import path from 'path';
import glob from 'glob';
import webpack from 'webpack';
import HtmlWebpackPlugin from 'html-webpack-plugin';
import MiniCssExtractPlugin from 'mini-css-extract-plugin';
import ForkTsCheckerWebpackPlugin from 'fork-ts-checker-webpack-plugin';
import ESLintPlugin from 'eslint-webpack-plugin';
import { CleanWebpackPlugin } from 'clean-webpack-plugin';
import PurgeCssPlugin from 'purgecss-webpack-plugin';
import CssMinimizerPlugin from 'css-minimizer-webpack-plugin';

const PATHS = {
    src: path.join(__dirname, 'src')
};

const config: webpack.Configuration = {
    mode: 'production',
    entry: `${PATHS.src}/index.tsx`,
    output: {
        path: path.resolve(__dirname, 'build'),
        filename: '[name].[contenthash].js',
        publicPath: ''
    },
    module: {
        rules: [
            {
                test: /\.(ts|js)x?$/i,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env', '@babel/preset-react', '@babel/preset-typescript']
                    }
                }
            },
            {
                test: /\.(css|s[ac]ss)$/,
                use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader']
            },
            {
                test: /\.(png|jpe?g|gif|webp|ico|svg)$/i,
                use: [
                    {
                        loader: 'file-loader'
                    }
                ]
            }
        ]
    },
    resolve: {
        extensions: ['.tsx', '.ts', '.js']
    },
    optimization: {
        minimize: true,
        minimizer: [
            `...`,
            new CssMinimizerPlugin({
                minimizerOptions: {
                    preset: [
                        'default',
                        {
                            discardComments: { removeAll: true }
                        }
                    ]
                }
            })
        ]
    },
    plugins: [
        new CleanWebpackPlugin(),
        new HtmlWebpackPlugin({
            template: `${PATHS.src}/index.tpl.html`
        }),
        new MiniCssExtractPlugin(),
        new PurgeCssPlugin({
            paths: glob.sync(`${PATHS.src}/**/*`, { nodir: true })
        }),
        new ForkTsCheckerWebpackPlugin({
            async: false
        }),
        new ESLintPlugin({
            extensions: ['js', 'jsx', 'ts', 'tsx']
        })
    ]
};

export default config;