punycode2/to-unicode.js

Modular version of punycode package

"use strict";

var mapDomain     = require("./lib/map-domain")
  , decode        = require("./decode")
  , regexPunycode = /^xn--/;

/**
 * Converts a Punycode string representing a domain name or an email address
 * to Unicode. Only the Punycoded parts of the input will be converted, i.e.
 * it doesn't matter if you call it on a string that has already been
 * converted to Unicode.
 * @memberOf punycode
 * @param {String} input The Punycoded domain name or email address to
 * convert to Unicode.
 * @returns {String} The Unicode representation of the given Punycode
 * string.
 */
module.exports = function (input) {
	return mapDomain(input, function (string) {
		return regexPunycode.test(string) ? decode(string.slice(4).toLowerCase()) : string;
	});
};