@atlaskit/editor-plugin-image-upload/dist/esm/ui/hooks/drag-drop.js

Image upload plugin for @atlaskit/editor-core

// Typeguard Function
export var isDragEvent = function isDragEvent(event) {
  return 'dataTransfer' in event;
};
export function isDroppedFile(rawEvent) {
  var e = rawEvent;
  if (!e.dataTransfer) {
    return false;
  }
  return Array.prototype.slice.call(e.dataTransfer.types).indexOf('Files') !== -1;
}