export function decodeStorageKey(encodedKey: string): string | undefined {
  try {
    const key = Buffer.from(encodedKey, 'base64url').toString('utf-8')
    const canonicalKey = Buffer.from(key, 'utf-8').toString('base64url')
    return key && canonicalKey === encodedKey ? key : undefined
  } catch {
    return undefined
  }
}