[ty] Format conflicting types as an enumeration

[sharkdp]

Summary

Format conflicting declared types as

`str`, `int` and `bytes`

Thanks to @AlexWaygood for the initial draft.

@dcreager, looking forward to your one-character follow-up PR.

[AlexWaygood]

Nice! There might be some pre-existing diagnostics that could also make use of this

[github-actions]

mypy_primer results

Changes were detected when running on open source projects

pydantic (https://github.com/pydantic/pydantic)
- error[conflicting-declarations] pydantic/v1/schema.py:1143:17: Conflicting declared types for `constraint_func`: ((...) -> type) | None, def constraint_func(**kw: Any) -> type[Any], def constraint_func(**kw: Any) -> type[Any], def constraint_func(**kw: Any) -> type[Any]
+ error[conflicting-declarations] pydantic/v1/schema.py:1143:17: Conflicting declared types for `constraint_func`: `((...) -> type) | None`, `def constraint_func(**kw: Any) -> type[Any]`, `def constraint_func(**kw: Any) -> type[Any]` and `def constraint_func(**kw: Any) -> type[Any]`

cloud-init (https://github.com/canonical/cloud-init)
- error[conflicting-declarations] cloudinit/handlers/jinja_template.py:28:5: Conflicting declared types for `JUndefinedError`: type[Exception], <class 'UndefinedError'>
+ error[conflicting-declarations] cloudinit/handlers/jinja_template.py:28:5: Conflicting declared types for `JUndefinedError`: `type[Exception]` and `<class 'UndefinedError'>`

typeshed-stats (https://github.com/AlexWaygood/typeshed-stats)
- error[conflicting-declarations] src/typeshed_stats/_cli.py:83:17: Conflicting declared types for `pprint`: (object, /) -> None, Unknown
+ error[conflicting-declarations] src/typeshed_stats/_cli.py:83:17: Conflicting declared types for `pprint`: `(object, /) -> None` and `Unknown`

vision (https://github.com/pytorch/vision)
- error[conflicting-declarations] torchvision/datasets/folder.py:80:5: Conflicting declared types for `is_valid_file`: ((str, /) -> bool) | None, def is_valid_file(x: str) -> bool
+ error[conflicting-declarations] torchvision/datasets/folder.py:80:5: Conflicting declared types for `is_valid_file`: `((str, /) -> bool) | None` and `def is_valid_file(x: str) -> bool`

dd-trace-py (https://github.com/DataDog/dd-trace-py)
- error[conflicting-declarations] benchmarks/appsec_iast_aspects/scenario.py:25:13: Conflicting declared types for `set_iast_request_enabled`: def set_iast_request_enabled(request_enabled) -> None, Unknown
+ error[conflicting-declarations] benchmarks/appsec_iast_aspects/scenario.py:25:13: Conflicting declared types for `set_iast_request_enabled`: `def set_iast_request_enabled(request_enabled) -> None` and `Unknown`
- error[conflicting-declarations] benchmarks/appsec_iast_aspects_ospath/scenario.py:23:13: Conflicting declared types for `set_iast_request_enabled`: def set_iast_request_enabled(request_enabled) -> None, Unknown
+ error[conflicting-declarations] benchmarks/appsec_iast_aspects_ospath/scenario.py:23:13: Conflicting declared types for `set_iast_request_enabled`: `def set_iast_request_enabled(request_enabled) -> None` and `Unknown`
- error[conflicting-declarations] benchmarks/appsec_iast_aspects_re_module/scenario.py:23:13: Conflicting declared types for `set_iast_request_enabled`: def set_iast_request_enabled(request_enabled) -> None, Unknown
+ error[conflicting-declarations] benchmarks/appsec_iast_aspects_re_module/scenario.py:23:13: Conflicting declared types for `set_iast_request_enabled`: `def set_iast_request_enabled(request_enabled) -> None` and `Unknown`
- error[conflicting-declarations] benchmarks/appsec_iast_aspects_split/scenario.py:23:13: Conflicting declared types for `set_iast_request_enabled`: def set_iast_request_enabled(request_enabled) -> None, Unknown
+ error[conflicting-declarations] benchmarks/appsec_iast_aspects_split/scenario.py:23:13: Conflicting declared types for `set_iast_request_enabled`: `def set_iast_request_enabled(request_enabled) -> None` and `Unknown`
- error[conflicting-declarations] benchmarks/appsec_iast_propagation/scenario.py:20:9: Conflicting declared types for `set_iast_request_enabled`: def set_iast_request_enabled(request_enabled) -> None, Unknown
+ error[conflicting-declarations] benchmarks/appsec_iast_propagation/scenario.py:20:9: Conflicting declared types for `set_iast_request_enabled`: `def set_iast_request_enabled(request_enabled) -> None` and `Unknown`

[sharkdp]

Nice! There might be some pre-existing diagnostics that could also make use of this

Nothing immediately came up while doing a superficial scan.