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ruff/crates/ty_python_semantic/resources
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David Peter e8e8180888
[ty] Implicit type aliases: Add support for typing.Union (#21363) 
## Summary

Add support for `typing.Union` in implicit type aliases / in value
position.

## Typing conformance tests

Two new tests are passing

## Ecosystem impact

* The 2k new `invalid-key` diagnostics on pydantic are caused by
https://github.com/astral-sh/ty/issues/1479#issuecomment-3513854645.
* Everything else I've checked is either a known limitation (often
related to type narrowing, because union types are often narrowed down
to a subset of options), or a true positive.

## Test Plan

New Markdown tests
2025-11-12 12:59:14 +01:00
..
corpus [ty] Fix panic due to simplifying Divergent types out of intersections types (#21253) 2025-11-03 15:41:11 +00:00
mdtest [ty] Implicit type aliases: Add support for typing.Union (#21363) 2025-11-12 12:59:14 +01:00
primer [ty] Add cycle handling to lazy_default (#20967) 2025-10-23 10:05:08 +02:00
README.md

README.md

Markdown files within the mdtest/ subdirectory are tests of type inference and type checking; executed by the tests/mdtest.rs integration test.

See crates/ty_test/README.md for documentation of this test format.