dist/vue-draggable-nested-tree.es.js
function currentTreeEmpty(info) {
    return !findChild(info, info.currentTree.rootData.children, function (v) {
      return v;
    });
  }
function currentTreeEmpty(info) {
    return !findChild(info, info.currentTree.rootData.children, function (v) {
      return v;
    });
  }
function currentTreeEmpty ( info ) { return ! findChild ( info , info . currentTree . rootData . children , function ( v ) { return v ; } ) ; }
当前树为空(不包括占位节点)
当前树为空 ( 不包括占位节点 )