Typing issue with chex.dataclass

[wookayin]

Static type checkers like pyright, mypy, etc. will think chex.dataclass-decorated dataclass has a constructor with no parameters.

Example:

@chex.dataclass(frozen=True)
class Foo:
    a: int
    b: int

However, Foo() is not a valid call: A legitimate call would be something like Foo(a=1, b=2). This does not agree with static type checker's analysis.

Compare the behavior with built-in dataclass:

[tmke8]

This can be solved with dataclass_transform. I can send a PR if desired.

[hbq1]

Hi @wookayin, thanks for reporting this issue.

@thomkeh that would be very helpful! I'm happy to review your PR.