diff --git a/packages/uni-api/src/helpers/api.ts b/packages/uni-api/src/helpers/api.ts
index e4534f7acda3f4b44a9b5e413e1e304aae0e3868..0e30b10379396b553eaea85d7fe086e7e070d6e3 100644
--- a/packages/uni-api/src/helpers/api.ts
+++ b/packages/uni-api/src/helpers/api.ts
@@ -38,11 +38,11 @@ export function createApi<T extends Function>(
   fn: T,
   protocol?: ApiProtocols
 ) {
-  return function(...args: any[]) {
+  return (function(...args: any[]) {
     if (type === API_TYPE_SYNC) {
       if (!(__DEV__ && protocol && !validateProtocol(name!, args, protocol))) {
         return fn.apply(null, formatApiArgs(args, options))
       }
     }
-  }
+  } as unknown) as T
 }