diff --git a/unreal/Puerts/Source/JsEnv/Private/V8Utils.cpp b/unreal/Puerts/Source/JsEnv/Private/V8Utils.cpp
new file mode 100644
index 0000000000..dd5f15eae3
--- /dev/null
+++ b/unreal/Puerts/Source/JsEnv/Private/V8Utils.cpp
@@ -0,0 +1,19 @@
+#include <V8Utils.h>
+
+v8::Local<v8::String> puerts::FV8Utils::ToV8String(v8::Isolate* Isolate, const TCHAR* String)
+{
+#if WITH_QUICKJS
+    return v8::String::NewFromUtf8(Isolate, TCHAR_TO_UTF8(String), v8::NewStringType::kNormal).ToLocalChecked();
+#else
+    return v8::String::NewFromTwoByte(Isolate, TCHAR_TO_UTF16(String), v8::NewStringType::kNormal).ToLocalChecked();
+#endif
+}
+
+FString puerts::FV8Utils::ToFString(v8::Isolate* Isolate, v8::Local<v8::Value> Value)
+{
+#if WITH_QUICKJS
+    return UTF8_TO_TCHAR(*(v8::String::Utf8Value(Isolate, Value)));
+#else
+    return UTF16_TO_TCHAR(*(v8::String::Value(Isolate, Value)));
+#endif
+}
\ No newline at end of file
diff --git a/unreal/Puerts/Source/JsEnv/Public/V8Utils.h b/unreal/Puerts/Source/JsEnv/Public/V8Utils.h
index 6289b6c6c2..5bf0efab27 100644
--- a/unreal/Puerts/Source/JsEnv/Public/V8Utils.h
+++ b/unreal/Puerts/Source/JsEnv/Public/V8Utils.h
@@ -34,7 +34,7 @@ enum ArgType
     EArgObject
 };
 
-class FV8Utils
+class JSENV_API FV8Utils
 {
 public:
     FORCEINLINE static void ThrowException(v8::Isolate* Isolate, const FString& Message)
@@ -96,7 +96,7 @@ class FV8Utils
 
     FORCEINLINE static v8::Local<v8::String> InternalString(v8::Isolate* Isolate, const FString& String)
     {
-        return v8::String::NewFromUtf8(Isolate, TCHAR_TO_UTF8(*String), v8::NewStringType::kNormal).ToLocalChecked();
+        return ToV8String(Isolate, String);
     }
 
     FORCEINLINE static v8::Local<v8::String> InternalString(v8::Isolate* Isolate, const char* String)
@@ -104,10 +104,7 @@ class FV8Utils
         return v8::String::NewFromUtf8(Isolate, String, v8::NewStringType::kNormal).ToLocalChecked();
     }
 
-    FORCEINLINE static FString ToFString(v8::Isolate* Isolate, v8::Local<v8::Value> Value)
-    {
-        return UTF8_TO_TCHAR(*(v8::String::Utf8Value(Isolate, Value)));
-    }
+    static FString ToFString(v8::Isolate* Isolate, v8::Local<v8::Value> Value);
 
     FORCEINLINE static FName ToFName(v8::Isolate* Isolate, v8::Local<v8::Value> Value)
     {
@@ -146,10 +143,7 @@ class FV8Utils
         return ToV8String(Isolate, String.ToString());
     }
 
-    FORCEINLINE static v8::Local<v8::String> ToV8String(v8::Isolate* Isolate, const TCHAR* String)
-    {
-        return v8::String::NewFromUtf8(Isolate, TCHAR_TO_UTF8(String), v8::NewStringType::kNormal).ToLocalChecked();
-    }
+    static v8::Local<v8::String> ToV8String(v8::Isolate* Isolate, const TCHAR* String);
 
     FORCEINLINE static v8::Local<v8::String> ToV8String(v8::Isolate* Isolate, const char* String)
     {