jw-pkg/src/python/jw/pkg/CmdBase.py

from typing import override
from .App import App
from .lib.Cmd import Cmd as Base

class CmdBase(Base):

    @override  # pyright: ignore[reportArgumentType]
    @property
    def app(self) -> App:
        ret = super().app
        if not isinstance(ret, App):
            raise TypeError(
                f'Expected {self.__class__.__name__}, got {type(ret).__name__}'
            )
        return ret