Function forwardPreview

quote/quote.ts:1190–1209

(msg: Api.Message)

    return canvas;
  } catch (_) {
    return undefined;
  }
}

function collectAnimatedEmojiIds(messages: any[]): string[] {
  const ids = new Set<string>();
  const scanEntity = (entity: any) => {
    const id = entity?.custom_emoji_id;
    if (id && animatedCustomEmojiCache.get(String(id))) ids.add(String(id));
  };
  const scanMessage = (message: any) => {
    if (!message) return;
    (message.entities || []).forEach(scanEntity);
    (message.caption_entities || []).forEach(scanEntity);
    // Do not let sender emoji_status alone turn a pure-text quote into animated WebM.
    // It is already rendered from customEmojiCache as a static first frame.
    if (message.replyMessage) scanMessage(message.replyMessage);
    if (message.forward) scanMessage(message.forward);
  };
  messages.forEach(scanMessage);
  return Array.from(ids);
}