Yes, no such integration exists yet. So if you want to create an own node you can find some information about how to here:
Apart from that can you also check the code of similar nodes and use them as a base.
Another alternative is to use the HTTP Request node. For that to work would you have to check out the API documentation of the product you want integrate how the request has to look like exactly.
We are currently working on a proper tutorial on how to create nodes. Hope we can release it soon. Will make things for sure easier, especially for people that get started with node-development.
Maybe not exactly EVERYTHING but everything that can be done with Node.js