vue中 使用 async/await 解决 异步问题

 methods: {
      // 初始化树列表
      async  initList() {
        this.loading = true;
        await undistributed().then(res1 => {
          this.newlist = res1.data; // 第二个接口  返回的数据
        }).catch(res => {});
        await treeList().then(res => {
          this.newlist.data = res.data.data;
          const cdata = this.newlist.data.map((item, index) => {
            const addIcon = data => {
              item.icon = ‘fa fa-pie-chart‘;
              if (data.child) {
                data.icon = ‘fa fa-sitemap‘;
              }
              data.child.forEach(item => addIcon(item));
            };
            addIcon(item);

            item.isDelete = true;
            item.isAdd = true;
            return item;
          });

}