I'm quite new on Node.js
and without any knowledge on mobile development apps but I would add push notifications into my server app.
On npm I found this module:
https://www.npmjs.com/package/node-pushnotifications
but, after some search and if I understand well, I should have some specific credentials for sending notifications to all devices, first question is: is correct?
Assuming that the answer is yes, are there something to jump this check? Another module, some test credentials or what you want? I would some generic solution but, if it is not possible, it could be useful also an IOS compatible solution.