Function couldAddChild

couldAddChild<T>(
    parent: TraversableTree<T>,
    prospectiveChild: TraversableTree<T>,
    eq?: IsEqual<TraversableTree<T>>,
): void
Returns true if prospectiveChild can be legally added to parent. False is returned if:
- parent and prospectiveChild are equal
- parent already contains prospectiveChild
- prospectiveChild has parent as its own child
Throws an error if parent or prospectiveChild is null/undefined.
Type Parameters
- T
Parameters
- parent: TraversableTree<T>
  Parent to add to
- prospectiveChild: TraversableTree<T>
  Prospective child
- eq: IsEqual<TraversableTree<T>> = isEqualDefault
  Equality function
Returns void