webpack.config.js

const Path = require('path');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const PostCSS = require('postcss');
const autoprefixer = require("autoprefixer");
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const FileManagerPlugin = require('filemanager-webpack-plugin');
const Dotenv = require('dotenv-webpack');

module.exports = {
    entry:
    {
        script: '/src/scripts/main.js',
        ServiceWorker: '/src/scripts/ServiceWorker.js'
    },
    output: {
        filename: "[name].js",
        chunkFilename: '[name].[contenthash].js',
        // Requires absolute path
        path: Path.resolve(__dirname, "public/dist/js"),
        publicPath: "public/dist/js/"
    },
    module: {
        rules: [
            {
                test: /\.m?js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env']
                    }
                }
            },
            {
                test: /\.script\.js$/,
                use: 'bundle-loader',
            },
            {
                test: /\.scss$/,
                use: [
                    {
                        loader: MiniCssExtractPlugin.loader
                    },
                    {
                        loader: "css-loader"
                    },
                    {
                        loader: "postcss-loader",
                    },
                    {
                        loader: "sass-loader",
                        options: {
                            sourceMap: true,
                        }
                    },
                ]
            },
            {
                test: /\.(png|woff|woff2|eot|ttf|svg|gif)$/,
                loader: 'url-loader'
            }
        ]
    },
    plugins: [
        /**
         * All files inside webpack's output.path directory will be removed once, but the
         * directory itself will not be. If using webpack 4+'s default configuration,
         * everything under <PROJECT_DIR>/dist/ will be removed.
         * Use cleanOnceBeforeBuildPatterns to override this behavior.
         *
         * During rebuilds, all webpack assets that are not used anymore
         * will be removed automatically.
         *
         * See `Options and Defaults` for information
         */
        new CleanWebpackPlugin(),
        new MiniCssExtractPlugin({
            filename: "./../css/[name].css",
            chunkFilename: "./../css/[name]-chunk.css"
        }),
    ],
};