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'use strict';
var mapDomain = require('./lib/map-domain')
, encode = require('./encode')
, regexNonASCII = /[^\x20-\x7E]/; // unprintable ASCII chars + non-ASCII chars
/**
* Converts a Unicode string representing a domain name or an email address to
* Punycode. Only the non-ASCII parts of the domain name will be converted,
* i.e. it doesn't matter if you call it with a domain that's already in
* ASCII.
* @memberOf punycode
* @param {String} input The domain name or email address to convert, as a
* Unicode string.
* @returns {String} The Punycode representation of the given domain name or
* email address.
*/
module.exports = function (input) {
return mapDomain(input, function (string) {
return regexNonASCII.test(string)
? 'xn--' + encode(string)
: string;
});
};
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