⬆️🐍 Update dependency ty to v0.0.18

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ty (changelog)	==0.0.17 → ==0.0.18

---

Release Notes

astral-sh/ty (ty)

v0.0.18

Compare Source

Released on 2026-02-20.

Bug fixes

• Support classes dynamically created via type(...) with cyclic bases (#​22792)
• Fix incorrect types inferred when unpacking mixed tuples (#​23437)
• Fix stack overflow for self-referential TypeOf in annotations (#​23407)
• Fix several server panics that could occur when computing semantic tokens for the current file (#​23403), #​23398, #​23401)

LSP server

• Add code folding support (#​23393)
• Add warning message when running ty server interactively (#​23416)
• Exclude test-related symbols from non-first-party packages in auto-import completions (#​23252)
• Fix bug where diagnostics could disappear after opening an external file (#​23447)
• Remove spurious destination for Go-To Definition on variables defined in a loop (#​23391)
• Use the fully qualified name when "baking" an inlay hint into the source code if the scope already contains a variable with the same name as the unqualified name (#​23265)
• Resolve TypeVars in call_signature_details parameter types (#​23149)

CLI

• Add --output-format to ty version (#​23387)

Configuration

• Add replace-imports-with-any option (#​23122)
• Support shellexpand for configuration paths (#​23274)

Type checking

• Add a new diagnostic to detect invalid class patterns in match statements (#​22939)
• Allow Self in ClassVar type annotations (#​23362)
• Consider synthesized methods and ClassVar-qualified declarations when determining whether an abstract method has been overridden in a subclass (#​23381)
• Add a diagnostic when combining Final and ClassVar (#​23365)
• Fix return type of assert_never (#​23389)
• Fix assert_type diagnostic messages (#​23342)
• Ban PEP-613 type alias values from containing type-qualifier special forms (#​23444)
• Infer LiteralString for f"{literal_str_a} {literal_str_b}" (#​23346)
• Infer precise types for bit-shift operations on integer literals (#​23301)
• Make [abstract-method-in-final-class] diagnostics less verbose for classes with many abstract methods (#​23379)
• Improve diagnostics for abstract @final classes (#​23376)
• Only perform literal promotion for implicitly inferred literals (#​23107)
• Parenthesize callable types when they appear in the return annotation of other callable types (#​23327)
• Consider a call to a generic function returning Never to terminate control flow (#​23419)
• Support calls to intersection types (#​22469)
• Validate annotated assignments to attributes on self (#​23388)
• Treat a bytes-literal type as a subtype of Sequence[<constituent integers in the bytestring>] (#​23329)
• Allow a string-literal argument to match against an Iterable parameter in type variable inference. (#​23326)
• Support narrowing from a Callable type returning a TypeGuard type (#​23280)

Performance

• Consider all code paths as being ambiguously reachable in cases with pathologically large control-flow graphs (#​23399)

Typeshed

• Sync vendored typeshed stubs (#​23279, Typeshed diff)

Contributors

• @​toby-bro
• @​Hugo-Polloli
• @​MatthewMckee4
• @​BurntSushi
• @​ibraheemdev
• @​knutwannheden
• @​Glyphack
• @​charliermarsh
• @​AlexWaygood
• @​abhijeetbodas2001
• @​carljm
• @​sharkdp

---

Configuration

📅 Schedule: Branch creation - "every weekend" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.