function makeHugeBase() {
  // Number of digits in the base.
  // Tests break if this is set to 200'000.  The reason for that is
  // String.fromCharCode(196609) == String.fromCharCode(1).
  const baseSize = 20000;
  const tab = [];
  for (let i = 0; i < baseSize; i++) {
    tab.push(String.fromCharCode(i));
  }
  return tab.join('');
}
@fileoverview Tests for arbitrary base conversion library baseconversion.js.