### What is the current behavior? `addEndListener` on `Transition` has two arguments, `node` and `done`. `node` is a function and `done` is undefined. ### What is the expected behavior? `node` should be the nodeRef and `done` should be a function <!-- If your use case is complicated, please be as descriptive as possible. --> Look at this line: https://github.com/reactjs/react-transition-group/blame/2989b5b87b4b4d1001f21c8efa503049ffb4fe8d/src/Transition.js#L350 if `this.props.nodeRef` exists, then `maybeNode` becomes `this.nextCallback` and `maybeNextCallback` becomes undefined? ### Could you provide a [CodeSandbox](https://codesandbox.io/) demo reproducing the bug? <!-- ... -->