Also pass existingItem as a parameter for the exposed props (functions) onItemAddBelow, onItemAddAbove.
Also pass existingItem as a parameter for the exposed props (functions) onItemAddBelow, onItemAddAbove.

luisincrespo/react-custom-list,luisincrespo/react-custom-list,luisincrespo/react-list,luisincrespo/react-list