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## 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
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.