The EventData does not allow reference to parent object (fails with 'Converting circular structure to JSON')

First, thanks for amazing and flexible lib.

————

The library serializes the EventData with JSON.stringify at some point of the detectChangesInView.

If the user code has backward reference to user objectn from EventData, the serialisation will obviously fails with ‘Converting circular structure to JSON).

Here is a minimal example. I have whatever custom class, that has a link to your EventData. My object hierarchy maintain some reference to your events.

My questions

1. Could you please have a look at the reason serialisation is performed.

2. If it is not strictly required, please get rid of it to overcome this annoying limitation.

Here is a minimal example to reproduce

export class MyClass {
  eventData: EventData;
}

From the onMove, onResize, … handlers I want to be able to access my objects to trigger some actions. So I keep a reference to myObject.

myObject : MyObject = new MyObject();

const eventData : DayPilot.EventData={
  id: 'id',
  start: '2024-02-10T...',
  end:  '2024-02-10T...',
  resource: '...',
  text: '...',

  // parent
  myObject: myObject as MyClass
} as DayPilot.EventData


myObject.eventData=eventData;

Upon detectChangesInView, your component invoke JSON.stringify, which fails with cycle detection.

core.mjs:10614 ERROR TypeError: Converting circular structure to JSON

--> starting at object with constructor 'Object'

|     property 'myObject' -> object with constructor 'Object'

--- property '…..' closes the circle

at JSON.stringify (<anonymous>)

  at optHash (daypilot-pro-angular.mjs:11175:17)

  at DayPilotSchedulerComponent.updateOptions (daypilot-pro-angular.mjs:11593:20)

  at DayPilotSchedulerComponent.ngDoCheck (daypilot-pro-angular.mjs:11563:14)

  at callHookInternal (core.mjs:4024:14)

  at callHook (core.mjs:4055:9)

  at callHooks (core.mjs:4006:17)

  at executeCheckHooks (core.mjs:3937:5)

  at refreshView (core.mjs:13507:21)

  at detectChangesInView (core.mjs:13663:9)

Any help would be appreciated,

Best regards,

Octave