Is there a GUI framework for visual CAD/IDE/EDA development based on diagrams?

Question

IDE

Is there any framework (jap JS or python) for developing an IDE - an editor and a circuit simulator (not electrical, but in general any, represented in the form of elements and their connections), taking over the GUI and input-output information?
That is, so that you can define elements at a high level (properties, inputs, outputs, everything is typed), widgets for elements, as well as widgets for connection types. The framework itself must check for type compatibility and trace connections. Those. you need something like LabView, NI Multisym and gnuradio, but not sharpened for electrical circuits or for automated process control systems and Turing-complete calculations, but sharpened for use as a framework for creating your own CAD.