Function handleDragStart

app/components/Resizable.tsx:21–26

(e: React.MouseEvent<HTMLDivElement>)

  const previousDragPosition = useRef<{ x: number; y: number } | null>(null);

  const handleDragStart = (e: React.MouseEvent<HTMLDivElement>): void => {
    previousDragPosition.current = {
      x: e.clientX,
      y: e.clientY,
    };
  };

  const handleDrag = (e: MouseEvent) => {
    if (previousDragPosition.current == null) {