Reply to a non-subscriber to a channel in Telegram bot?

Question

Node.js

Good afternoon! Tell me, please, you need the bot to respond only to subscribers of a certain channel, and ask non-subscribers to subscribe. I am using nodejs. I found the getChatMember("@channelusername", "user_id") method, but I don't understand how to use it.

Answer 1

Everything is correct, you need to check with this method that the one who wrote the subscriber and then, respectively, either answered or did not answer