webpack.prod.config.js

const path = require('path');
const {merge} = require('webpack-merge');
const { CleanWebpackPlugin } = 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');
const common = require('./webpack.common.config');

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