vue-draggable/src/core/state.js

Vue drag and drop library without any dependency

export const getState = () => ({
  targets: null,
  items: null,
  nextItemElement: null,
  // related variable is needed to maintain a reference to the
  // dragleave's relatedTarget, since it doesn't have e.relatedTarget
  related: null,
  selections: {
    items: [],
    owner: null,
    droptarget: null
  }
});