webpack.config.js

const defaultConfig = require('@wordpress/scripts/config/webpack.config');
const WooCommerceDependencyExtractionWebpackPlugin = require('@woocommerce/dependency-extraction-webpack-plugin');
const path = require('path');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

const wcDepMap = {
	'@woocommerce/blocks-registry': ['wc', 'wcBlocksRegistry'],
	'@woocommerce/settings'       : ['wc', 'wcSettings']
};

const wcHandleMap = {
	'@woocommerce/blocks-registry': 'wc-blocks-registry',
	'@woocommerce/settings'       : 'wc-settings'
};

const requestToExternal = (request) => {
	if (wcDepMap[request]) {
		return wcDepMap[request];
	}
};

const requestToHandle = (request) => {
	if (wcHandleMap[request]) {
		return wcHandleMap[request];
	}
};

// Export configuration.
module.exports = {
	...defaultConfig,
	entry: {
		'frontend/blocks': '/assets/js/paytrail-block-payment.js',
		'frontend/main': '/assets/js/main.js',
		'frontend/intro-scripts': '/assets/js/paytrail-intro-scripts.js',
	},
	output: {
		path: path.resolve( __dirname, 'dist/assets' ),
		filename: '[name].js',
	},
	plugins: [
		...defaultConfig.plugins.filter(
			(plugin) =>
				plugin.constructor.name !== 'DependencyExtractionWebpackPlugin'
		),
		new WooCommerceDependencyExtractionWebpackPlugin({
			requestToExternal,
			requestToHandle
		}),
		new MiniCssExtractPlugin({
            filename: '[name].css',
            chunkFilename: '[id].css',
          }),
	],
	module: {
		rules: [
			{
                test: /\.css$/,
                use: [
                'css-loader',
                'postcss-loader',
                ],
            },
            {
                test: /\.scss$/,
                use: [
                    'css-loader',
                    'postcss-loader',
                    'sass-loader',
                ],
            },
            {
                test: /\.(woff(2)?|eot|ttf|otf)(\?[a-z0-9=\.]+)?$/,
                use: {
                    loader: 'url-loader?name=../fonts/[name].[ext]'
                }
            },
			...defaultConfig.module.rules
		]
	}
};