JsonType could be better declared

[shughes-uk]

Currently y'all declare JsonType:

JsonType = Union[str, int, float, bool, None, Dict[str, Any], List[Any]]

I think would be better declared as

JsonType = Union[str, int, float, bool, None, Mapping[str, "JsonType"], List["JsonType"]]

Any thoughts?

[petyaslavova]

Hi @shughes-uk, thank you for your feedback! I will work on a json module related issue soon, and I will check if such a change will be appropriate for all possible cases.

[shughes-uk]

There's some solid discussion of it over here on the stdlib typing module python/typing#182 too if you would like some more details.