Webpack configuration for a fast build of Node.js application. Does not bundle node_modules. Uses SWC to transform and minimize code.

webpack.config.js

const path = require("node:path");
const webpack = require("webpack");
const { SwcMinifyWebpackPlugin } = require('swc-minify-webpack-plugin');

module.exports = {
	mode: "production",
	target: "node22",
	context: path.resolve(__dirname),
	entry: {
		server: path.resolve(__dirname, "../src/server.ts"),
	},
	output: {
		filename: "[name].js",
		chunkFilename: "[name].chunk.js",
		publicPath: "/dist/",
		path: path.resolve(__dirname, "../dist"),
		library: {
			name: 'app',
			type: 'var',
		},
		strictModuleExceptionHandling: true,
	},
	resolve: {
		extensions: [".js", ".mjs", ".ts", ".json"],
		modules: [path.resolve(__dirname, "../src"), "node_modules"],
	},
	module: {
		rules: [
			{
				test: /\.(m?j|t)s$/,
				use: [
					{
						loader: "swc-loader",
					},
				],
				exclude: /node_modules/,
			},
		],
	},
	plugins: [
		new webpack.DefinePlugin({
			"process.env": {
				NODE_ENV: JSON.stringify("production"),
				HOST: JSON.stringify(process.env.HOST),
				PORT: JSON.stringify(process.env.PORT),
			},
		}),
		new webpack.optimize.LimitChunkCountPlugin({
			maxChunks: 1,
		}),
	],
	optimization: {
		chunkIds: "deterministic",
		moduleIds: "deterministic",
		minimize: true,
		minimizer: [new SwcMinifyWebpackPlugin()],
		mangleExports: true,
		concatenateModules: true,
		innerGraph: true,
		sideEffects: true,
	},
	stats: {
		logging: 'error'
	},
	infrastructureLogging: {
		level: 'error'
	},
	node: false,
	externalsPresets: { node: true },
	externals: [
		function externals(...args) {
			const pkg = require(path.resolve(__dirname, '../package.json'));
			const nodeModules = [
				...Object.keys(pkg.dependencies ?? {}),
				...Object.keys(pkg.devDependencies ?? {}),
				...Object.keys(pkg.peerDependencies ?? {}),
				...Object.keys(pkg.optionalDependencies ?? {}),
			];
			const scopedModuleRegex = new RegExp(
				'@[a-zA-Z0-9][\\w-.]+/[a-zA-Z0-9][\\w-.]+([a-zA-Z0-9./]+)?',
				'g'
			);
			const [arg1, arg2, arg3] = args;
			let request = arg2;
			let callback = arg3;

			// Webpack 5
			if (arg1 && arg1.context && arg1.request) {
				request = arg1.request;
				callback = arg2;
			}

			let moduleName = '';
			if (scopedModuleRegex.test(request)) {
				scopedModuleRegex.lastIndex = 0;
				moduleName = request.split('/', 2).join('/');
			} else {
				moduleName = request.split('/')[0];
			}

			if (nodeModules && nodeModules.indexOf(moduleName) !== -1) {
				return callback(null, 'commonjs' + ' ' + request);
			}
			callback();
		}
	]
};