webpack.config.js

const path = require('path');
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const OptimizeCssAssetsPlugin = require("optimize-css-assets-webpack-plugin");
const TerserPlugin = require("terser-webpack-plugin");

module.exports = {
    mode: 'production',

    entry: {
        main: './webpack.js',
    },

    output: {
        path: path.resolve(__dirname, "public"),
        filename: '[name].[contenthash].bundle.js',
        publicPath: ''
    },

    devServer: {
        port: 8080,
        contentBase: path.resolve(__dirname, "public"),
        hot: true
    },

    optimization: {
        minimizer: [
            new OptimizeCssAssetsPlugin(),
            new TerserPlugin(),
            new HtmlWebpackPlugin({
                template: path.resolve(__dirname, "./docs/index.html"),
                favicon: "./docs/assets/images/favicon.png",
                minify: {
                    removeAttributeQuotes: true,
                    collapseWhitespace: true,
                    removeComments: true
                }
            })
        ]
    },

    plugins: [
        new CleanWebpackPlugin(),
        new HtmlWebpackPlugin({ template: path.resolve(__dirname, "./docs/index.html") }),
        new MiniCssExtractPlugin({ filename: '[name].[contenthash].bundle.css' })
    ],

    module: {
        rules: [
            {
                test: /\.html$/,
                loader: "html-loader"
            },
            {
                test: /\.css$/,
                use: [{
                    loader: MiniCssExtractPlugin.loader,
                    options: {
                        publicPath: ''
                    }
                }, {
                    loader: "css-loader"
                }]
            },
            {
                test: /\.m?js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env'],
                        plugins: [
                            '@babel/plugin-proposal-class-properties',
                            '@babel/plugin-syntax-object-rest-spread'
                        ]
                    }
                }
            },
            {
                test: /\.(woff(2)?|ttf|eot)(\?v=\d+\.\d+\.\d+)?$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            name: '[name].[ext]',
                            outputPath: 'assets/fonts/'
                        }
                    }
                ]
            },
            {
                test: /\.(png|svg|jpg|jpeg|gif)$/i,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            name: '[name].[hash].[ext]',
                            outputPath: 'assets/images/'
                        }
                    }
                ]
            }
        ]
    }
};