webpack.prod.js

const HtmlWebPackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CopyPlugin = require("copy-webpack-plugin");
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");
const TerserPlugin = require("terser-webpack-plugin");

 
module.exports = {
 
    mode: 'production',
    output: {
        clean: true,
        filename: 'main.[contenthash].js'
    },
    optimization: {
        minimize: true,
        minimizer: [
            new CssMinimizerPlugin(),
            new TerserPlugin()
        ]
    },
    module: {
        rules: [
            {
                test: /\.html$/i,
                loader: 'html-loader',
                options: {
                    sources: false,
                    minimize: false
                },
                
            },
            {
                test: /\.css$/i,
                exclude: /style.css$/,
                use: ['style-loader','css-loader']
            },
            {
                test: /style.css$/,
                use: [MiniCssExtractPlugin.loader, 'css-loader']
            },
            {
                test: /\.(png|jpe?g|gif)$/i,
                use: 'file-loader'
            },
            {
                test: /\.m?js$/,
                exclude: /node_modules/,
                use: {
                  loader: "babel-loader",
                  options: {
                    presets: ['@babel/preset-env']
                  }
                }
              }
        ]
    },
    plugins: [
        new HtmlWebPackPlugin({
            title: 'My Webpack App',
            template: './src/index.html',
            filename: './index.html'
        }),
        new MiniCssExtractPlugin({
            filename: '[name].[fullhash].css',
            ignoreOrder: false
        }),
        new CopyPlugin({
            patterns: [{from: 'src/assets/', to: 'assets/'}]
        })
    ]
 
    
}