Method make_normalized

mypy/types.py:3531–3545

(
        item: Type, *, line: int = -1, column: int = -1, is_type_form: bool = False
    )

    @staticmethod
    def make_normalized(
        item: Type, *, line: int = -1, column: int = -1, is_type_form: bool = False
    ) -> ProperType:
        item = get_proper_type(item)
        if is_type_form:
            # Don't convert TypeForm[X | Y] to (TypeForm[X] | TypeForm[Y])
            pass
        else:
            if isinstance(item, UnionType):
                return UnionType.make_union(
                    [TypeType.make_normalized(union_item) for union_item in item.items],
                    line=line,
                    column=column,
                )
        return TypeType(item, line=line, column=column, is_type_form=is_type_form)  # type: ignore[arg-type]

    def accept(self, visitor: TypeVisitor[T]) -> T:
        return visitor.visit_type_type(self)