Function fn

tests/units/components/test_memo.py:1324–1325

(event=None)

    )

    def fn(event=None) -> rx.Component:
        return rx.button("hi")

    # Python <=3.10 wraps a ``= None`` param into a union with ``None`` (its
    # ``get_type_hints`` adds ``Optional``); the ``EventHandler`` underneath