Function isImageNode

packages/react-dnd-html5-backend/src/OffsetUtils.js:29–34

(node)

}

function isImageNode(node) {
  return node.nodeName === 'IMG' && (
    isFirefox() ||
    !document.documentElement.contains(node)
  );
}

function getDragPreviewSize(isImage, dragPreview, sourceWidth, sourceHeight) {
  let dragPreviewWidth = isImage ? dragPreview.width : sourceWidth;