webpack.config.js

const HtmlWebPackPlugin = require('html-webpack-plugin');
const MiniCSSExtractlugin = require('mini-css-extract-plugin');

module.exports = {
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node-modules/,
                use: {
                    loader: 'babel-loader'
                }
            },
            {
                test: /\.html$/,
                use: [
                    {
                        loader: 'html-loader',
                        options: { minimize: true }
                    }
                ]
            },
            {
                test: /\.scss$/,
                use: [
                    'style-loader',
                    'css-loader',
                    'sass-loader'
                ]
            },
            {
                test: /\.(png|jpg|svg|gif)$/
            }
        ]
    },
    plugins: [
        new HtmlWebPackPlugin({
            template: './src/index.html',
            filename: './index.html'
        }),
        new MiniCSSExtractlugin({
            filename: '[name].css',
            chunkFilename: '[id].css'
        })
    ]
}

npm i -D webpack webpack-cli html-webpack-plugin html-loader webpack-dev-server babel-loader @babel/core @babel/preset-env sass-loader css-loader style-loader node-sass mini-css-extract-plugin file-loader