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HTML

              
                <script src="https://cdn.jsdelivr.net/npm/interactjs/dist/interact.min.js"></script>

<div class="container">
  <div class="item" />
</div>
              
            
!

CSS

              
                .item {
  width: 50px;
  height: 50px;
  background-color: pink;
}

              
            
!

JS

              
                // This stores the position of the current item being dragged
const position = { x: 0, y: 0 };

interact(".item")
  .draggable({
    // By setting manualStart to true - we control the manualStart.
    // We need to do this so that we can clone the object before we begin dragging it.
    manualStart: true,
    listeners: {
      move(event) {
        position.x += event.dx;
        position.y += event.dy;
        event.target.style.transform = `translate(${position.x}px, ${position.y}px)`;
      }
    }
  })
  // This only gets called when we trigger it below using interact.start(...)
  .on("move", function(event) {
    const { currentTarget, interaction } = event;
    let element = currentTarget;

    // If we are dragging an item from the sidebar, its transform value will be ''
    // We need to clone it, and then start moving the clone
    if (
      interaction.pointerIsDown &&
      !interaction.interacting() &&
      currentTarget.style.transform === ""
    ) {
      element = currentTarget.cloneNode(true);

      // Add absolute positioning so that cloned object lives right on top of the original object
      element.style.position = "absolute";
      element.style.left = 0;
      element.style.top = 0;

      // Add the cloned object to the document
      const container = document.querySelector(".container");
      container && container.appendChild(element);

      const { offsetTop, offsetLeft } = currentTarget;
      position.x = offsetLeft;
      position.y = offsetTop;

      // If we are moving an already existing item, we need to make sure the position object has
      // the correct values before we start dragging it
    } else if (interaction.pointerIsDown && !interaction.interacting()) {
      const regex = /translate\(([\d]+)px, ([\d]+)px\)/i;
      const transform = regex.exec(currentTarget.style.transform);

      if (transform && transform.length > 1) {
        position.x = Number(transform[1]);
        position.y = Number(transform[2]);
      }
    }

    // Start the drag event
    interaction.start({ name: "drag" }, event.interactable, element);
  });

              
            
!
999px

Console