Hi There is an issue with addValidator function which resides under ValidationService. In Case of validateOnEmpty : true option set in global option code fails at
_validateOnEmpty = (self.validationAttrs.hasOwnProperty('validateOnEmpty')) ? commonObj.parseBool(self.validationAttrs.validateOnEmpty) : !!_globalOptions.validateOnEmpty;

Instead of above line it should have been

_validateOnEmpty = (self.validationAttrs.hasOwnProperty('validateOnEmpty')) ? self.commonObj.parseBool(self.validationAttrs.validateOnEmpty) : !!_globalOptions.validateOnEmpty;

The commonObj resides inside self in that function hence if we directly access it, it ends up failing the code.
[edit : fixed bad language]