webpack.prod.config.js

const path = require("path");
const common = require("./webpack.common.config");
const { merge } = require('webpack-merge');
const cleanWebPack = require("clean-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const OptimizeCssAssetsPlugin = require("optimize-css-assets-webpack-plugin");
const TerserPlugin = require("terser-webpack-plugin");
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = merge(common, {
    mode: "production",
    output: {
        filename: "[name].[contenthash].js",
        path: path.resolve(__dirname, "dist")
    },
    optimization: {
        minimizer: [
            new OptimizeCssAssetsPlugin(),
            new TerserPlugin(),
            new HtmlWebpackPlugin({
                template: "./src/index.html",
                minify: {
                    removeAttributeQuotes: true,
                    collapseWhitespace: true,
                    removeComments: true
                }
            })
        ]
    },
    plugins: [
        new MiniCssExtractPlugin({ filename: "[name].[contenthash].css" }),
        new cleanWebPack.CleanWebpackPlugin()],
    module: {
        rules: [
            {
                test: /\.css$/,
                use: [MiniCssExtractPlugin.loader, "css-loader"]
            }
        ]
    }
});