Function toUnicode

lib/punycode.js:401–407

(input)

 * string.
 */
const toUnicode = function(input) {
	return mapDomain(input, function(string) {
		return regexPunycode.test(string)
			? decode(string.slice(4).toLowerCase())
			: string;
	});
};

/**
 * Converts a Unicode string representing a domain name or an email address to