David Peter d4eb4277ad [ty] Add basic support for dataclasses.field (#19553) ... ## Summary Add basic support for `dataclasses.field`: * remove fields with `init=False` from the signature of the synthesized `__init__` method * infer correct default value types from `default` or `default_factory` arguments ```py from dataclasses import dataclass, field def default_roles() -> list[str]: return ["user"] @dataclass class Member: name: str roles: list[str] = field(default_factory=default_roles) tag: str | None = field(default=None, init=False) # revealed: (self: Member, name: str, roles: list[str] = list[str]) -> None reveal_type(Member.__init__) ``` Support for `kw_only` has **not** been added. part of https://github.com/astral-sh/ty/issues/111 ## Test Plan New Markdown tests		2025-07-25 14:56:04 +02:00
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dataclass_transform.md	[ty] Restructure/move dataclass tests (#19117)	2025-07-03 10:36:14 +00:00
dataclasses.md	[ty] Pass down specialization to generic dataclass bases (#19472)	2025-07-21 20:51:58 +02:00
fields.md	[ty] Add basic support for dataclasses.field (#19553)	2025-07-25 14:56:04 +02:00