Method sendReaction

trace/trace.ts:556–576

(peer: Api.TypePeer, msgId: number, reactions: (string | BigInteger)[], big: boolean)

    return { id, entity, display: displayParts.join(" ").trim() };
  }

  private async parseReactions(msg: Api.Message, text: string): Promise<(string | BigInteger)[]> {
    await this.initializeSelf(); // Ensures isPremium is set
    const validReactions: (string | BigInteger)[] = [];
    const customEmojiMap = new Map<number, BigInteger>();
    const customEmojiIndices = new Set<number>();
    if (this.isPremium) {
        const customEmojiEntities = (msg.entities || []).filter(
            (e): e is Api.MessageEntityCustomEmoji => e instanceof Api.MessageEntityCustomEmoji
        );
        for (const entity of customEmojiEntities) {
            customEmojiMap.set(entity.offset, entity.documentId);
            for (let i = 0; i < entity.length; i++) {
                customEmojiIndices.add(entity.offset + i);
            }
        }
    }
    const textOffsetInMessage = msg.message.indexOf(text);
    if (textOffsetInMessage === -1) return [];
    let currentIndex = 0;
    for (const char of text) {
        const fullMessageOffset = textOffsetInMessage + currentIndex;
        if (customEmojiMap.has(fullMessageOffset)) {
            validReactions.push(customEmojiMap.get(fullMessageOffset)!);