webpack.config.js

const path = require('node:path');
const webpack = require('webpack');
const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');

const isProduction = process.env.NODE_ENV === 'production';
const analyze = process.env.ANALYZE === 'true';

const baseConfig = {
	mode: isProduction ? 'production' : 'development',
	target: 'node',
	externals: {
		// Keep Node.js built-ins external
		fs: 'commonjs fs',
		path: 'commonjs path',
		crypto: 'commonjs crypto',
		util: 'commonjs util',
		events: 'commonjs events',
		stream: 'commonjs stream',
		zlib: 'commonjs zlib',
		child_process: 'commonjs child_process',
		os: 'commonjs os',
		url: 'commonjs url',
		http: 'commonjs http',
		https: 'commonjs https',
		buffer: 'commonjs buffer',
		// Keep large dependencies external to reduce bundle size
		zod: 'commonjs zod',
		commander: 'commonjs commander',
		'ts-morph': 'commonjs ts-morph',
		'@faker-js/faker': 'commonjs @faker-js/faker',
		'fast-glob': 'commonjs fast-glob',
		chokidar: 'commonjs chokidar',
		ws: 'commonjs ws',
		ink: 'commonjs ink',
		react: 'commonjs react',
		'ink-spinner': 'commonjs ink-spinner',
		'ink-select-input': 'commonjs ink-select-input',
		'ink-text-input': 'commonjs ink-text-input',
	},
	resolve: {
		extensions: ['.ts', '.tsx', '.js', '.jsx', '.json'],
		alias: {
			'@': path.resolve(__dirname, 'src'),
			'@core': path.resolve(__dirname, 'src/core'),
			'@cli': path.resolve(__dirname, 'src/cli'),
			'@utils': path.resolve(__dirname, 'src/utils'),
		},
	},
	module: {
		rules: [
			{
				test: /\.(ts|tsx)$/,
				use: [
					{
						loader: 'ts-loader',
						options: {
							configFile: path.resolve(__dirname, 'tsconfig.json'),
							transpileOnly: !isProduction, // Faster builds in dev
							compilerOptions: {
								// Override for webpack build
								module: 'ESNext',
								target: 'ES2020',
								moduleResolution: 'node',
								allowSyntheticDefaultImports: true,
								esModuleInterop: true,
							},
						},
					},
				],
				exclude: /node_modules/,
			},
		],
	},
	plugins: [
		new webpack.DefinePlugin({
			'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV || 'development'),
			__VERSION__: JSON.stringify(require('./package.json').version),
			__DEV__: JSON.stringify(!isProduction),
		}),
		// Tree shaking optimization
		new webpack.optimize.ModuleConcatenationPlugin(),
		...(analyze ? [new BundleAnalyzerPlugin()] : []),
	],
	optimization: {
		minimize: isProduction,
		usedExports: true, // Enable tree shaking
		sideEffects: false, // Enable aggressive tree shaking
		// Disable split chunks for CLI to avoid conflicts
		splitChunks: false,
	},
	performance: {
		maxAssetSize: 250000, // 250KB
		maxEntrypointSize: 250000,
		hints: isProduction ? 'error' : 'warning',
	},
};

module.exports = [
	// CLI Entry Point - Minimal for debugging
	{
		...baseConfig,
		name: 'cli',
		entry: './src/cli/functional.ts',
		output: {
			path: path.resolve(__dirname, 'dist'),
			filename: 'cli/index.js',
			clean: true,
			libraryTarget: 'commonjs2',
		},
		plugins: [
			...baseConfig.plugins,
			new webpack.BannerPlugin({
				banner: '#!/usr/bin/env node',
				raw: true,
			}),
		],
	},
	// Library Entry Point
	{
		...baseConfig,
		name: 'lib',
		entry: './src/index.ts',
		output: {
			path: path.resolve(__dirname, 'dist'),
			filename: 'index.js',
			libraryTarget: 'commonjs2',
			library: 'zodkit',
		},
		optimization: {
			...baseConfig.optimization,
			// More aggressive optimization for library
			splitChunks: false, // Single bundle for library
		},
	},
];