type annotations for metainfo

[sneakers-the-rat]

Hello :)

Very simple little PR, took me awhile to get a sense of the structure of the metainfo object, so thought i might as well contribute some type annotations for it.

typing_extensions dep is for the Required/NotRequired/total syntax which is only in >3.11, that's necessary to model the "anything can be in there but these are the keys that are usually in there" structure of that dict.

[Ravencentric]

typing_extensions dependency is not required. Type checkers assume it's present in stub files regardless so you can use it without depending on it

[Ravencentric]

I have only given it a quick look, I'll review it in depth soon.

[Ravencentric]

The typing part looks good to me (after you handle the requested changes), although @rndusr will still have to check if the structure defined by the typed dict matches the runtime

[sneakers-the-rat]

check if the structure defined by the typed dict matches the runtime

I tried to go through and ctrl+f for different keys being added/removed, but i am sure that i missed some. sorry if i did! mypy doesn't complain at least?

[Ravencentric]

check if the structure defined by the typed dict matches the runtime

I tried to go through and ctrl+f for different keys being added/removed, but i am sure that i missed some. sorry if i did! mypy doesn't complain at least?

don't worry, not saying you've got it wrong. I'm just not too familiar with the runtime semantics of metainfo to make a good judgement.