text: // decompose Icelandic special characters to ASCII
  const decompose = {
    á: 'a',
    ð: 'd',
    é: 'e',
    í: 'i',
    ó: 'o',
    ú: 'u',
    ý: 'y',
    þ: 'th',
    æ: 'ae',
    ö: 'o',
    Á: 'A',
    Ð: 'D',
    É: 'E',
    Í: 'I',
    Ó: 'O',
    Ú: 'U',
    Ý: 'Y',
    Þ: 'TH',
    Æ: 'AE',
    Ö: 'O'
  };
  
  const reDecompose = new RegExp('[' + Object.keys(decompose).join('') + ']', 'g');
  
  module.exports = function (str) {
    return str.replace(reDecompose, d => decompose[d]);
  };
  