Working with react 17.0.2

I want to run the code with react version 17.0.2. Everything works except dragging.
The problem is that in function _onDragMove inside the file Graph.jsx, the input values "index" and "nodeList" are undefined in version 17 while they have values in version 16.
How can I capture the node is being dragged in the function _onDragMove (or the node's id).
