nodejs
diff --git a/‎src/req_wrap.h‎
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+#ifndef REQ_WRAP_H_
+#define REQ_WRAP_H_
+
+namespace node {
+
+template <typename T>
+class ReqWrap {
+ public:
+  ReqWrap() {
+    v8::HandleScope scope;
+    object_ = v8::Persistent<v8::Object>::New(v8::Object::New());
+  }
+
+  ~ReqWrap() {
+    // Assert that someone has called Dispatched()
+    assert(req_.data == this);
+    assert(!object_.IsEmpty());
+    object_.Dispose();
+    object_.Clear();
+  }
+
+  // Call this after the req has been dispatched.
+  void Dispatched() {
+    req_.data = this;
+  }
+
+  v8::Persistent<v8::Object> object_;
+  T req_;
+};
+
+
+}  // namespace node
+
+
+#endif  // REQ_WRAP_H_