dist/vue-draggable-nested-tree.cjs.js
function appendPrev(info) {
    if (isNodeDroppable(info.targetPrev)) {
      th.appendTo(info.dplh, info.targetPrev);
      if (!info.targetPrev.open) info.store.toggleOpen(info.targetPrev);
    } else {
      insertDplhAfterTo(info.dplh, info.targetPrev, info);
    }
  }
function appendPrev(info) {
    if (isNodeDroppable(info.targetPrev)) {
      th.appendTo(info.dplh, info.targetPrev);
      if (!info.targetPrev.open) info.store.toggleOpen(info.targetPrev);
    } else {
      insertDplhAfterTo(info.dplh, info.targetPrev, info);
    }
  }
append to prev sibling