export function base64UrlEncode(buffer: Uint8Array): string {
  let binary = '';
  buffer.forEach((byte) => {
    binary += String.fromCharCode(byte);
  });
  return btoa(binary).replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/g, '');
}

export function decodeStoredTokens<T>(value: string | null): T | null {
  if (!value) {
    return null;
  }

  try {
    return JSON.parse(value) as T;
  } catch (error) {
    console.warn('[Auth] Failed to parse stored tokens', error);
    return null;
  }
}