Method getBasicGroupChatId

aban/aban.ts:482–484

(chatId: any)

              const channel = await resolveChannelInput(client, group);
              const res: any = await client.invoke(
                new Api.channels.GetParticipant({
                  channel: channel as any,
                  participant: new Api.InputPeerUser({
                    userId: bigInt(userId),
                    accessHash: bigInt(0),
                  }),