Converting circular structure to JSON error in Transition.toString

[AnWeber]

If $trace.enable('Transition') is called and one Transition Parameter is a circular structure, then a Converting circular structure to JSON error is triggered.

The error happens in transition.ts - toString Line 759

AngularJS: 1.6.5
UI Router: v1.0.6
DEMO: http://plnkr.co/edit/yzJ1cV0DU1izGUFxZM1C?p=preview

[AnWeber]

Thanks for your fix. Great Work. Maybe you also fixed angular-ui/ui-router#3521 with this commit. I am waiting for a new angularjs release to test this issue.