// 树形数据相关操作

export const tree2array = (tree, parents = [], keyAttribute = 'children') => {
 // 树转扁平数组 同时计算好每一条数据的父子关系
 return tree
 .reduce((pre, next) => {
 const children = tree2array(next[keyAttribute] || [], parents.concat(next));
 return pre.concat({
 ...next,
 parents,
 children: next[keyAttribute] ? children : null,
 }).concat(children);
 }, []);
};