Function base64urlToBytes

packages/worker-utils/src/hostname-label.ts:74–86

(encoded: string)

    const bytes = base64urlToBytes(encoded);
    return bytesToBase64url(bytes) === encoded ? bytes : null;
  } catch {
    return null;
  }
}

function bytesToBase32Hex(bytes: Uint8Array): string {
  let output = '';
  let buffer = 0;
  let bits = 0;

  for (const byte of bytes) {
    buffer = (buffer << 8) | byte;
    bits += 8;

    while (bits >= 5) {
      bits -= 5;