I would like to have a very simple client in nodejs (an example) that can receive messages from my contacts in telegram. I just searched in internet but I only get bot samples.
You can use the following libraries.
They provide abstractions to build applications to interact with telegram. for an example on how to use telegram-js, you can use https://github.com/dot-build/telegram-js/blob/master/sample.js.
(Thank you @gokcand for the feedback)