// polyfill from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat
exports.repeat = function (str, count) {
  if (String.prototype.repeat) {
    return str.repeat(count);
  }
  const maxCount = str.length * count;
  count = Math.floor(Math.log(count) / Math.log(2));
  while (count) {
    str += str;
    count--;
  }
  str += str.substring(0, maxCount - str.length);
  return str;
};