Angular2+ - Typeerror: Form.reset Is Not A Function

This is a question carried over from Finding where and why [object ErrorEvent] is being thrown as a result of troubleshooting a different problem. I am mocking an NgForm to pass in

Solution 1:

It appears that Karma was sending the error from the wrong test, or at least misdirecting me from the actual cause of the error.

After I placed resetForm: () => null into the correct mock-form then all is well.