Function getDisplayName

pmcaptcha/pmcaptcha.ts:389–397

(client: TelegramClient, userId: number)

  if (nameCache.has(userId)) return nameCache.get(userId)!;
  const user = await fetchUserInfo(client, userId);
  if (user) {
    const name = [user.firstName, user.lastName].filter(Boolean).join(" ").trim() || "Unknown";
    return name;
  }
  return String(userId);
}

function userLink(id: number, name: string): string {
  return `<a href="tg://user?id=${attrEscape(id)}">${htmlEscape(name)} (${htmlEscape(id)})</a>`;
}

function isBotFromSender(sender: any): boolean {