diff --git a/LICENSE b/LICENSE
index 4947287..2bb9ad2 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,3 @@
-
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
diff --git a/interfaces/kits/js/src/common/napi/n_async/n_async_work_callback.cpp b/interfaces/kits/js/src/common/napi/n_async/n_async_work_callback.cpp
index 6b6d0b7..e514418 100644
--- a/interfaces/kits/js/src/common/napi/n_async/n_async_work_callback.cpp
+++ b/interfaces/kits/js/src/common/napi/n_async/n_async_work_callback.cpp
@@ -91,7 +91,7 @@ NVal NAsyncWorkCallback::Schedule(string procedureName, NContextCBExec cbExec, N
         return NVal();
     }
 
-    ctx_ = nullptr; // The ownership of ctx_ has been transfered
+    ctx_ = nullptr; // The ownership of ctx_ has been transferred
     return NVal::CreateUndefined(env_);
 }
 } // namespace DistributedFS
diff --git a/interfaces/kits/js/src/common/napi/n_class.cpp b/interfaces/kits/js/src/common/napi/n_class.cpp
index c5a77b2..7a6a357 100644
--- a/interfaces/kits/js/src/common/napi/n_class.cpp
+++ b/interfaces/kits/js/src/common/napi/n_class.cpp
@@ -69,7 +69,7 @@ bool NClass::SaveClass(napi_env env, string className, napi_value exClass)
     return res == napi_ok;
 }
 
-napi_value NClass::InstantiateClass(napi_env env, string className, vector<napi_value> args)
+napi_value NClass::InstantiateClass(napi_env env, string& className, vector<napi_value>& args)
 {
     NClass &nClass = NClass::GetInstance();
     lock_guard(nClass.exClassMapLock);
diff --git a/interfaces/kits/js/src/common/napi/n_class.h b/interfaces/kits/js/src/common/napi/n_class.h
index 3f1abd0..fc0e23b 100644
--- a/interfaces/kits/js/src/common/napi/n_class.h
+++ b/interfaces/kits/js/src/common/napi/n_class.h
@@ -35,7 +35,7 @@ public:
                                                     napi_callback constructor,
                                                     std::vector<napi_property_descriptor> &&properties);
     static bool SaveClass(napi_env env, std::string className, napi_value exClass);
-    static napi_value InstantiateClass(napi_env env, std::string className, std::vector<napi_value> args);
+    static napi_value InstantiateClass(napi_env env, std::string& className, std::vector<napi_value>& args);
 
     template <class T> static T *GetEntityOf(napi_env env, napi_value objStat)
     {
diff --git a/interfaces/kits/js/src/mod_file/class_file/file_n_exporter.cpp b/interfaces/kits/js/src/mod_file/class_file/file_n_exporter.cpp
index 449a93e..df8764e 100644
--- a/interfaces/kits/js/src/mod_file/class_file/file_n_exporter.cpp
+++ b/interfaces/kits/js/src/mod_file/class_file/file_n_exporter.cpp
@@ -188,7 +188,9 @@ bool GetFileNames(string path, vector<string> &filenames, bool rec, bool isList)
             if (isList) {
                 filenames.push_back(path + "/" + ptr->d_name);
             } else if (ptr->d_type == DT_DIR && rec) {
-                GetFileNames(path + "/" + ptr->d_name, filenames, rec, isList);
+                if(GetFileNames(path + "/" + ptr->d_name, filenames, rec, isList) == false) {
+                    break;
+                }
             } else if (ptr->d_type == DT_REG) {
                 filenames.push_back(path + "/" + ptr->d_name);
             }
diff --git a/utils/filemgmt_libn/src/n_async/n_async_work_callback.cpp b/utils/filemgmt_libn/src/n_async/n_async_work_callback.cpp
index 1afb0f0..d7a6793 100644
--- a/utils/filemgmt_libn/src/n_async/n_async_work_callback.cpp
+++ b/utils/filemgmt_libn/src/n_async/n_async_work_callback.cpp
@@ -92,7 +92,7 @@ NVal NAsyncWorkCallback::Schedule(string procedureName, NContextCBExec cbExec, N
         return NVal();
     }
 
-    ctx_ = nullptr; // The ownership of ctx_ has been transfered
+    ctx_ = nullptr; // The ownership of ctx_ has been transferred
     return NVal::CreateUndefined(env_);
 }
 } // namespace LibN
diff --git a/utils/filemgmt_libn/src/n_async/n_async_work_promise.cpp b/utils/filemgmt_libn/src/n_async/n_async_work_promise.cpp
index 3ce1a74..443c450 100644
--- a/utils/filemgmt_libn/src/n_async/n_async_work_promise.cpp
+++ b/utils/filemgmt_libn/src/n_async/n_async_work_promise.cpp
@@ -85,7 +85,7 @@ NVal NAsyncWorkPromise::Schedule(string procedureName, NContextCBExec cbExec, NC
         return NVal();
     }
 
-    ctx_ = nullptr; // The ownership of ctx_ has been transfered
+    ctx_ = nullptr; // The ownership of ctx_ has been transferred
     return {env_, result};
 }
 } // namespace LibN