webpack.config.js

const path = require('path');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const HTMLWebpackPlugin = require('html-webpack-plugin');

module.exports = {
    entry: {
        app: './src/index.js',
        test: './src/test.js'
    },
    output: {
        filename: '[name].js',
        path: path.resolve(__dirname, './dist'),
    },
    mode: 'none',
    module: {
        rules: [
            {
                test: /\.(jpg|png)$/,
                use: [
                    'file-loader'
                ]
            },
            {
                test: /\.(scss)$/,
                use: [
                    MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'
                ]
            },
            {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: 'babel-loader'
            },

        ],
    },
    plugins: [
        new MiniCssExtractPlugin({
            filename: 'styles.css'
        }),
        new CleanWebpackPlugin({
            cleanOnceBeforeBuildPatterns: [
                '**/*'
            ]
        }),
        new HTMLWebpackPlugin({
            title: 'To jest Tytuł!!!',
            template: './src/index.html'
        })
    ],
    optimization: {
        splitChunks: {
            chunks: 'all',
            name: 'common',
        },
    },
};