Alex Waygood 5a18e93d65 [ty] Make special cases for subscript inference exhaustive (#22035) ...

## Summary

Fixes https://github.com/astral-sh/ty/issues/2015. We weren't recursing
into the value of a type alias when we should have been.

There are situations where we should also be recursing into the
bounds/constraints of a typevar. I initially tried to do that as well in
this PR, but that seems... trickier. For now I'm cutting scope; this PR
does, however, add several failing tests for those cases.

## Test Plan

added mdtests

2026-01-15 00:18:54 +00:00

..

alias.md

[ty] Make special cases for subscript inference exhaustive (#22035)

2026-01-15 00:18:54 +00:00

assignment_diagnostics.md

[ty] implement TypedDict structural assignment (#21467)

2025-11-20 13:15:28 -08:00

bytes.md

[ty] Integer indexing into bytes returns int (#18218)

2025-05-20 16:44:12 +02:00

class.md

[ty] Make special cases for subscript inference exhaustive (#22035)

2026-01-15 00:18:54 +00:00

instance.md

[ty] Rename non-subscriptable error code to not-subscriptable (#22193)

2025-12-27 11:44:35 +00:00

lists.md

[ty] Infer more precise types for collection literals (#20360)

2025-09-17 18:51:50 -04:00

stepsize_zero.md

Rename Red Knot (#17820)

2025-05-03 19:49:15 +02:00

string.md

[ty] Make special cases for subscript inference exhaustive (#22035)

2026-01-15 00:18:54 +00:00

tuple.md

[ty] Make special cases for subscript inference exhaustive (#22035)

2026-01-15 00:18:54 +00:00

typevar.md

[ty] Make special cases for subscript inference exhaustive (#22035)

2026-01-15 00:18:54 +00:00