One fix for types:

function nip44Encrypt(rumor: Rumor | VerifiedEvent, privateKey: Uint8Array, publicKey: string): string {
  const key = nip44.v2.utils.getConversationKey(privateKey, publicKey)
  return nip44.v2.encrypt(JSON.stringify(rumor), key)
}


It does not have any impact, just cosmetics