vue报错[Vue warn]: Unknown custom element: - did you register the component correctly? name属性报错

beforeCreate: function () {
  this.$options.components.TreeFolderContents = require('./tree-folder-contents.vue').default
}

或者

components: {
  TreeFolderContents: () => import('./tree-folder-contents.vue')
}

• 递归组件导致name属性报错，要在create之前加载组件

https://vuejs.org/v2/guide/components-edge-cases.html#Recursive-Components