Doesn't load correctly with moment 'Invalid date'

[hexadecy]

We should check if date isValid();

[andreyjkee]

if (angular.isString(scope.currentDate) && scope.currentDate !== '') {
  scope.currentDate = moment(scope.currentDate, scope.format);
}

should be replaced with:

if (moment(scope.currentDate, scope.format, true).isValid()) {
    scope.currentDate = moment(scope.currentDate, scope.format);
}

[hexadecy]

My case was when the model is set to moment('Invalid date');

[hexadecy]

In v1.15.2