chore(deps): update dependency ty to v0.0.50

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ty (changelog)	==0.0.49 → ==0.0.50

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Release Notes

astral-sh/ty (ty)

v0.0.50

Compare Source

Released on 2026-06-17.

Bug fixes

• Avoid cross-TypeVar leakage in generic inference (#​26099)
• Fix panic from oscillating collection-use constraints (#​26031)
• Preserve type variables in fixed tuple aliases (#​26041)
• Respect ParamSpec binding contexts (#​25993)
• Show bare Final as a special form on hover (#​26029)
• Support options in functional dataclass calls (#​25989)

LSP server

• Add context-sensitive keyword completions (#​26036)
• Fix wildcard import symbol range (#​25740)
• Highlight decorated methods consistently (#​26003)
• Preserve narrowing after qualified TYPE_CHECKING (#​26051)
• Respect client's content format preference (#​25957)
• Retain all diagnostic annotations in the server (#​26006)
• Track unused-binding captures across nested scopes (#​25536)

Diagnostics

• Fix override diagnostics for decorated methods (#​25671)
• Improve duplicate-base diagnostics (#​26107)
• Reject invalid dataclass flag combinations (#​25985)
• Reject legacy TypeVars in PEP 695 class bases (#​25975)
• Reject legacy TypeVars in PEP 695 functions (#​25979)
• Respect @no_type_check in function validation (#​25994)

Performance

• Avoid rebuilding unchanged specializations (#​25826)
• Avoid redundant equality intersections (#​26057)
• Avoid retaining empty use-def tables (#​26018)
• Compact retained definition inference extras (#​25838)
• Deduplicate retained scope inference types (#​25846)
• Disable LRU tracking for one-shot checks (#​26106)
• Fast path collection literals with exact type contexts (#​25878)
• Flatten retained declaration states (#​25912)
• Improve flow snapshot performance (#​26012)
• Skip stub package checks in stub-free search paths (#​25963)
• Speed up large-union narrowing (#​26048)
• Speed up module resolution for projects with many search paths (#​25962)
• Store cumulative binding end offsets (#​25913)
• Use compact frozen representation for narrowing constraints (#​25990)

Core type checking

• Annotate intersection and negation types using & and ~ (#​26035)
• Diagnose zero-step slices on lists (#​25966)
• Full-scope bidirectional inference for non-empty collection literals (#​25280)
• Improve equality-based narrowing for ==, !=, and match (#​25788)
• Infer precise values for standard-library enums (#​26103)
• Make equality evaluation cycle-aware (#​26055)
• Narrow equality across IntEnum classes (#​26079)
• Narrow tuple expression match subjects (#​25874)
• Preserve literal types for loop variables over literal collections (#​25083)
• Preserve negative narrowing for starred sequence patterns (#​25927)
• Preserve non-final types in Hashable unions (#​26039)
• Support enum literals as tagged-union discriminants (#​25855)
• Sync vendored typeshed stubs (#​25952). Typeshed diff
• Sync vendored typeshed stubs (#​25997). Typeshed diff
• Synthesize NamedTuple __match_args__ (#​25934)
• Treat assigned enum hooks conservatively (#​25958)
• Validate deprecated warning categories (#​26025)

Contributors

• @​AlexWaygood
• @​MichaReiser
• @​ankddev
• @​sqqueak
• @​lerebear
• @​sharkdp
• @​denyszhak
• @​ibraheemdev
• @​charliermarsh

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