iview Tree 模糊搜索，返回符合条件的节点，和整条数据链

<Input v-model="searchWord" @on-enter='searchTree(value,treeList)' />
<Tree :data="treeList && treeList.length > 0 ? treeList:[]" ></Tree>

export default {
    name: 'selectTreePage',
    data() {
        return {
        	value:'',
        	treeList:[],
        	treeListInit:[],
        	arr: [ //可参考的数据结构
				{
					name: 'a1',
					children: [
						{
							name: 'a11',
							children: null
						},
						{
							name: 'a22',
							children: null
						}
					]
				},
				{
					name: 'b1',
					children: [
						{
							name: 'b11',
							children: null
						}
					]
				},
				{
					name: 'c1',
					children: null
				}
			],
        }
    },
     methods:{
     	searchTree(value, arr){ 
            if (!value) { //内容为空时，查询所有
                this.getTreeList()
            }
            const rebuildData=(value, treeList) => {
                let newarr = [];
                arr.forEach(element => {
                    if (element.children && element.children.length) {
                        if (element.name.indexOf(value) > -1) {
                            element.expand = true;
                            newarr.push(element);
                        }
                        const ab = rebuildData(value,element.children);
                        const obj = {
                            ...element,
                            expand: true,
                            children: ab
                        };
                        if (ab && ab.length) {
                            newarr.push(obj);
                        }
                    } else {
                        if (element.name.indexOf(value) > -1) {
                            newarr.push(element);
                        }
                    }
                });
                return newarr;
            };
            this.treeList = [];
            this.treeList = rebuildData(value, arr);
        }
     },
      getTreeList(){ //获取tree数据
	        ...... 
	        // res => data 
	        // this.treeList = data.data;
	        // this.treeListInit= data.data;
       }
}