import {createApp} from 'vue'; import VueBlocksTree from 'vue3-blocks-tree'; import 'vue3-blocks-tree/dist/vue3-blocks-tree.css'; // or import 'vue3-blocks-tree/src/styles/blocks-tree.less'; let defaultoptions = {treeName:'blocks-tree'} createApp(App) .use(VueBlocksTree,default...