src: add args validation method

Author: arxngr

src/tcp_wrap.cc

@@ -291,6 +291,13 @@ void TCPWrap::Listen(const FunctionCallbackInfo<Value>& args) {
 
 
 void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args) {
+  if (args.Length() <= 2) {
+    // Throw an exception for insufficient arguments
+    args.GetIsolate()->ThrowException(v8::Exception::TypeError(
+      v8::String::NewFromUtf8(args.GetIsolate(), "Insufficient arguments").ToLocalChecked()));
+    return;
+  }
+
   CHECK(args[2]->IsUint32());
   // explicit cast to fit to libuv's type expectation
   int port = static_cast<int>(args[2].As<Uint32>()->Value());