const npmName = require('npm-name');

(async () => {
	console.log(await npmName('chalk'));
	// false

	const result = await npmName.many(['chalk', '@sindresorhus/is', 'abc123'])
	console.log(result.get('chalk'));
	//=> false
	console.log(result.get('@sindresorhus/is'));
	//=> false
	console.log(result.get('abc123'));
	//=> true

	try {
		await npmName('_ABC');
	} catch (error) {
		console.log(error.message);
		// Invalid package name: _ABC
		// - name cannot start with an underscore
		// - name can no longer contain capital letters
	}
})();