更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/tsutils/util/index.d.ts

@@ -0,0 +1,5 @@
+export * from './util';
+export * from './usage';
+export * from './control-flow';
+export * from './type';
+export * from './convert-ast';