webpack.config.js

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

module.exports = {
    plugins: [
        new MiniCssExtractPlugin(),
    ],
    entry: {
        frontend: './resources/js/frontend.js',
        backend: './resources/js/backend.js',
        error: './resources/js/error.js',
        maintenance: './resources/js/maintenance.js',
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /(node_modules)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env']
                    }
                }
            },
            {
                test: /\.s?css$/,
                use: [
                    MiniCssExtractPlugin.loader,
                    'css-loader',
                    {
                        loader: 'postcss-loader',
                        options: {
                            postcssOptions: {
                                plugins: () => [
                                    require('autoprefixer')
                                ]
                            }
                        }
                    },
                    {
                        loader: 'sass-loader'
                    }
                ]
            }
        ]
    },
    optimization: {
        minimizer: [
            new CssMinimizerPlugin(),
            new TerserPlugin(),
        ],
    },
    output: {
        path: __dirname + '/public/dist',
    },
};