How to subscribe to notifications in Node.js in the same way as we subscribe to them in the browser?

Question

Node.js

Good afternoon. Interested in the question, is it possible to subscribe to notifications not through the browser, but through Node.js?
That is, when you enter a site that offers us to subscribe to notifications and we subscribe to them, then after a while the site can send us a notification and it will pop up in the corner of the screen.
Example:

spoiler

I also want to subscribe to notifications, but not through the browser, but through Node.js and listen in real time whether the site has sent something or not.
How to implement this? Is it difficult? I do not quite understand where to dig