npm-name-checker2/tsdown.config.ts

Check whether a package or organization name is available on npm

import { defineConfig } from 'tsdown';

export default defineConfig({
	entry: ['src/*'],
	format: ['esm'], // Keep ESM format
	outDir: 'dist',
	clean: true,
	sourcemap: false,
	// splitting: false,
	bundle: true,
	dts: false,
	minify: true,
	external: ['fs/promises', 'path', 'commander'],
	loader: {
		'.json': 'json', // ⬅ transforms JSON into normal ESM object
	},
	// outExtension: () => ({ js: '.js' }), // Force .js instead of .mjs
});