David Peter 1fe958c694 [ty] Implicit type aliases: Support for PEP 604 unions (#21195) ... ## Summary Add support for implicit type aliases that use PEP 604 unions: ```py IntOrStr = int | str reveal_type(IntOrStr) # UnionType def _(int_or_str: IntOrStr): reveal_type(int_or_str) # int | str ``` ## Typing conformance The changes are either removed false positives, or new diagnostics due to known limitations unrelated to this PR. ## Ecosystem impact Spot checked, a mix of true positives and known limitations. ## Test Plan New Markdown tests.		2025-11-03 21:50:25 +01:00
..
conditionals	[ty] Use declared variable types as bidirectional type context (#20796)	2025-10-16 15:40:39 -04:00
assert.md
assignment.md	[ty] No union with Unknown for module-global symbols (#20664)	2025-10-01 16:40:30 +02:00
bool-call.md
boolean.md	[ty] Consider __len__ when determining the truthiness of an instance of a tuple class or a @final class (#21049)	2025-10-24 09:29:55 +00:00
complex_target.md	[ty] No union with Unknown for module-global symbols (#20664)	2025-10-01 16:40:30 +02:00
hasattr.md	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
isinstance.md	[ty] Implicit type aliases: Support for PEP 604 unions (#21195)	2025-11-03 21:50:25 +01:00
issubclass.md	[ty] Implicit type aliases: Support for PEP 604 unions (#21195)	2025-11-03 21:50:25 +01:00
match.md	[ty] Use the top materialization of classes for narrowing in class-patterns for match statements (#21150)	2025-10-30 20:44:51 +00:00
post_if_statement.md
truthiness.md	[ty] Reachability constraints (#18621)	2025-06-17 09:24:28 +02:00
type.md	[ty] linear variance inference for PEP-695 type parameters (#18713)	2025-08-19 17:54:09 -07:00
type_guards.md	[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)	2025-10-12 18:39:32 +00:00
while.md	[ty] Eagerly simplify 'True' and 'False' constraints (#18998)	2025-06-30 13:11:52 +02:00