"`dict[str, T]` as a field type is not supported" about mashumaro HOT 2 CLOSED

Edit: after some trial and error, it seems to work if and only if you quote 'Foo[T]' which isn't immediately obvious from the docs, since it's valid code (e.g. with from __future__ import annotations).

What makes it even worse is that some linters (e.g. ruff) force-strip quotes from type annotations by default (link).

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@aldanor Thank you for bringing it in.

Postponed evaluation of annotations is pain in the ass. Function inspect.signature returns string instead of ForwardRef object in this case and we need to evaluate it. Fortunately, almost everything is ready for this since I've been working on ForwardRef support:

• #145

I need to tweak evaluate_forward_ref method and turn the string annotation into ForwardRef by hand. This fix won't take much time.

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