1 files changed, 64 insertions, 0 deletions
diff --git a/src/bun.js/bindings/napi_external.h b/src/bun.js/bindings/napi_external.h
new file mode 100644
index 000000000..edac914f8
--- /dev/null
+++ b/src/bun.js/bindings/napi_external.h
@@ -0,0 +1,64 @@
+
+
+#pragma once
+
+#include "root.h"
+
+#include "BunBuiltinNames.h"
+#include "BunClientData.h"
+
+namespace Zig {
+
+using namespace JSC;
+
+class NapiExternal : public JSC::JSNonFinalObject {
+    using Base = JSC::JSNonFinalObject;
+
+public:
+    NapiExternal(JSC::VM& vm, JSC::Structure* structure)
+        : Base(vm, structure)
+    {
+    }
+
+    DECLARE_INFO;
+
+    ~NapiExternal()
+    {
+        if (m_value) {
+            delete m_value;
+        }
+
+        static constexpr unsigned StructureFlags = Base::StructureFlags;
+
+        template<typename, SubspaceAccess mode> static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM & vm)
+        {
+            if constexpr (mode == JSC::SubspaceAccess::Concurrently)
+                return nullptr;
+            return WebCore::subspaceForImpl<JSNapiExternal, WebCore::UseCustomHeapCellType::No>(
+                vm,
+                [](auto& spaces) { return spaces.m_clientSubspaceForNapiExternal.get(); },
+                [](auto& spaces, auto&& space) { spaces.m_clientSubspaceForNapiExternal = WTFMove(space); },
+                [](auto& spaces) { return spaces.m_subspaceForNapiExternal.get(); },
+                [](auto& spaces, auto&& space) { spaces.m_subspaceForNapiExternal = WTFMove(space); });
+        }
+
+        static JSC::Structure* createStructure(JSC::VM & vm, JSC::JSGlobalObject * globalObject,
+            JSC::JSValue prototype)
+        {
+            return JSC::Structure::create(vm, globalObject, prototype,
+                JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
+        }
+
+        static NapiExternal* create(JSC::VM & vm, JSC::Structure * structure)
+        {
+            NapiExternal* accessor = new (NotNull, JSC::allocateCell<NapiExternal>(vm)) NapiExternal(vm, structure);
+            accessor->finishCreation(vm);
+            return accessor;
+        }
+
+        void finishCreation(JSC::VM & vm);
+        void* m_value;
+        void* finalizer_context;
+    };
+
+} // namespace Zig
+\ No newline at end of file