Earlier quoted context omitted.
Does the project contain C++ code?
They use whatever is the system WebView on the platform you run the code on. On Windows that's the Edge engine, on MacOS it's Safari's engine, etc. Those are all some combination of C and C++. See https://github.com/tauri-apps/wry Edit: s/IE or Edge/Edge
I don't know the extend of WebView in Electron is it something common?