react-draggable 라이브러리를 사용하다 warning 발견 Warning: findDOMNode is deprecated in StrictMode. findDOMNode was passed an instance of DraggableCore which is inside StrictMode. Instead, add a ref directly to the element you want to reference. react-draggable에서는 아래와 같이 말하고 있다. If running in React Strict mode, ReactDOM.findDOMNode() is deprecated. Unfortunately, in order for to work properly, we need raw ..