How to properly implement input for node-telegram-bot-api?

Question

JavaScript

It is necessary to process answers to bot questions in Telegram, for example, authorization, where there are no prepared answers that can be made with buttons. You can use the state, but I do not quite understand how to do it beautifully and conveniently. For the second hour I've been trying to google this topic, but either my hands are crooked, or it's too obvious. please tell me a good solution