'use strict';

module.exports = function urlencode(str) {
  //       discuss at: http://locutus.io/php/urlencode/
  //      original by: Philip Peterson
  //      improved by: Kevin van Zonneveld (http://kvz.io)
  //      improved by: Kevin van Zonneveld (http://kvz.io)
  //      improved by: Brett Zamir (http://brett-zamir.me)
  //      improved by: Lars Fischer
  //         input by: AJ
  //         input by: travc
  //         input by: Brett Zamir (http://brett-zamir.me)
  //         input by: Ratheous
  //      bugfixed by: Kevin van Zonneveld (http://kvz.io)
  //      bugfixed by: Kevin van Zonneveld (http://kvz.io)
  //      bugfixed by: Joris
  // reimplemented by: Brett Zamir (http://brett-zamir.me)
  // reimplemented by: Brett Zamir (http://brett-zamir.me)
  //           note 1: This reflects PHP 5.3/6.0+ behavior
  //           note 1: Please be aware that this function
  //           note 1: expects to encode into UTF-8 encoded strings, as found on
  //           note 1: pages served as UTF-8
  //        example 1: urlencode('Kevin van Zonneveld!')
  //        returns 1: 'Kevin+van+Zonneveld%21'
  //        example 2: urlencode('http://kvz.io/')
  //        returns 2: 'http%3A%2F%2Fkvz.io%2F'
  //        example 3: urlencode('http://www.google.nl/search?q=Locutus&ie=utf-8')
  //        returns 3: 'http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3DLocutus%26ie%3Dutf-8'

  str = str + '';

  // Tilde should be allowed unescaped in future versions of PHP (as reflected below),
  // but if you want to reflect current
  // PHP behavior, you would need to add ".replace(/~/g, '%7E');" to the following.
  return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29').replace(/\*/g, '%2A').replace(/%20/g, '+');
};
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