Make argument count mismatches easier to debug.

Add context on what was the expected number of arguments as well as the actual count.
pmed · Mar 8, 2023 · fa7f72a · fa7f72a
1 parent 9d45f2f
commit fa7f72a
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/v8pp/call_from_v8.hpp b/v8pp/call_from_v8.hpp
@@ -93,7 +93,10 @@ decltype(auto) call_from_v8(F&& func, v8::FunctionCallbackInfo<v8::Value> const&
 
 		if (args.Length() != call_traits::arg_count)
 		{
-			throw std::runtime_error("argument count does not match function definition");
+			throw std::runtime_error(
+				"Argument count does not match function definition. Expected " +
+				std::to_string(call_traits::arg_count) + " but got " +
+				std::to_string(args.Length()));
 		}
 
 		if constexpr (with_isolate)