refactor: FileTree

src/components/index.ts

@@ -8,6 +8,7 @@ export { Article } from './Article';
 export type { ArticleProps } from './Article';
 export { Sidebar } from './Sidebar';
 export type { SidebarProps } from './Sidebar';
+export { FileTreeNode, HeadingNode } from './FileTree';
 
 // 导出数据类型
 export type { DiceProps } from './dice';