Function bytesToBase64url

packages/worker-utils/src/hostname-label.ts:69–72

(bytes: Uint8Array)

const INSTANCE_LABEL_RE = /^i-([0-9a-f]{32})$/;
const USER_LABEL_RE = /^u-([0-9a-v]+)$/;

function base64urlToBytesOrNull(encoded: string): Uint8Array | null {
  try {
    const bytes = base64urlToBytes(encoded);
    return bytesToBase64url(bytes) === encoded ? bytes : null;
  } catch {
    return null;