format objectGUID

formatObjectGUID.js

// source: https://github.com/ldapjs/node-ldapjs/issues/297#issuecomment-137765214

const formatGUID = function (objectGUID) {
  var data = Buffer.from(objectGUID, 'binary');

  // GUID_FORMAT_D
  var template = '{3}{2}{1}{0}-{5}{4}-{7}{6}-{8}{9}-{10}{11}{12}{13}{14}{15}';

  // check each byte
  for (var i = 0; i < data.length; i++) {
    // get the current character from that byte
    var dataStr = data[i].toString(16);
    dataStr = data[i] >= 16 ? dataStr : '0' + dataStr;

    // insert that character into the template
    template = template.replace(new RegExp('\\{' + i + '\\}', 'g'), dataStr);
  }

  return template;
};

module.exports = formatGUID;

i just extracted the code that @hildoer had written here ldapjs/node-ldapjs#297 (comment)