Exception when used with late data binding

I am using Angles with a forked version of chartjs (https://github.com/Regaddi/Chart.js). I get the following error when I use it in a late databinding situation:

TypeError: Cannot read property 'labels' of undefined at calculateDrawingSizes (http://localhost:8081/vendor/nnnick-chartjs/Chart.js:1484:24) at new Bar (http://localhost:8081/vendor/nnnick-chartjs/Chart.js:1333:3) at Bar (http://localhost:8081/vendor/nnnick-chartjs/Chart.js:556:10) at Object. (http://localhost:8081/vendor/angles/angles.js:46:28) at Object.ng.config.$provide.decorator.$delegate.proto.$watch.applyFunction as fn at Scope.$get.Scope.$digest (http://localhost:8081/vendor/angular/angular.js:12357:29) at Scope.ng.config.$provide.decorator.$delegate.proto.$digest (:844:31) at Scope.$get.Scope.$apply (http://localhost:8081/vendor/angular/angular.js:12622:24) at Scope.ng.config.$provide.decorator.$delegate.proto.$apply (:855:30) at done (http://localhost:8081/vendor/angular/angular.js:8234:45)

I think the problem is that the $watch function gets called once before the promise has been resolved. It looks like there might have once been protection against this as there is a comment in the Angles code saying to "if data not defined, exit". However there is no code to exit.

            $scope.$watch("data", function (newVal, oldVal) { 
                // if data not defined, exit
                if ($scope.chart) { type = $scope.chart; }
                ...
            }

The error occurs when 'newVal' is undefined.

gonewandering / angles

Exception when used with late data binding #33