onDrop args source.data loses its class - is this intentional?

[cam-m]

1st - thanks for the awesome library, love it so far :)

One question - I set drop data in getInitialData this:

getInitialData: (args: ElementGetFeedbackArgs): Record<string, any> => {
    return {
        'myClass': new MyClass()
    };
}

I expected args.source.data in onDrop to retain the class in its object prototype, but instead its now a plain object. Interestingly any properties of the class do retain their class.

Is that intentional? I was going to use instanceof on the record value to discern the dropped data :)