NodeJS package for Campaigns?

Hello,

Do you have (or provide) a nodeJS package to interact with Campaigns' API?

I want to integrate Campaigns into my my node app so that when users register they're automatically added to a mailing list.

I went to the documentation but it's missing a some important stuff like

For signup form disabled lists, contacts will be added without any confirmations.

What does that mean? What are signup form disabled lists and how to acquire them?

I got this quote from https://www.zoho.com/campaigns/help/developers/contact-subscribe.html

Which I assume it's for adding an email to a mailing list.

If you don't provide a nodeJS SDK please include a code example (in node) that shows how to add an email to a list without sending a confirmation email. Also the email will be provided from the data inside my functions and not URL.