webpack.config.js

const path = require('path');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const TerserJSPlugin = require('terser-webpack-plugin');
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');


module.exports = {
    entry: './app/index.js',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'bundle.js',
        publicPath: '/'
    },
    module: {
        rules: [
            {
                test: '/\.js$/',
                use: [
                    {
                        loader: 'babel-loader',
                        options: {
                            presets: ['@babel/preset-env']
                        }
                    }
                ],
            },
            {
                test: /\.css$/,
                use: [
                    {
                        loader: MiniCssExtractPlugin.loader,
                    },
                    "css-loader"
                ],
            },
        ],
    },
    plugins: [
        new MiniCssExtractPlugin('main.css'),
    ],
    optimization: {
        minimizer: [new TerserJSPlugin({}), new OptimizeCSSAssetsPlugin({})],
    },
    devServer: {
        contentBase: path.join(__dirname, "dist"),
        port: 8080,
        historyApiFallback: true,
        open: true,
        hot: true,
        publicPath: '/'
      },
}