cancelCallback function not called

[Youdaman]

I setup a cancelCallback function as per the docs however it isn't called.

To test/repro, setup a security rule for a particular node in firebase and then intentionally send the wrong data (i.e. missing fields that are required by newData.hasChildren for example).

What I end up with is a warning in the browser console:
FIREBASE WARNING: set at /trips/-KcqIr6OQFk6vNPLFBTy failed: permission_denied

And also an error in the browser console:
Uncaught (in promise) Error: PERMISSION_DENIED: Permission denied

I was expecting the function specified via cancelCallback to be called but it's not.

I found I could manually catch any errors after the push using:
.then(function(success) {}, function(error) {});

However if I was to try console.log(error) in the above error catch it would print the entire callstack as a string. Possibly I'm doing it wrong but I would have expected an error object.

Either way I'm not having any luck getting cancelCallback working and any help would be appreciated :)

[Youdaman]

Perhaps the cancelCallback is not for read/write/permission errors but actually some kind of cancel event that happens on the Firebase backend?

[posva]

Hey, sorry for the delay. Yeah, it's definitely not about read/write rights. I'll simply add a link to the docs: https://firebase.google.com/docs/database/admin/retrieve-data and remove the false assumption. Thanks!