TypeAlias forward reference results in Unknown

[Skynet0]

Environment data

• Language Server version: 2022.11.30
• OS and version: linux x64
• Python version (and distribution if applicable, e.g. Anaconda):
• python.analysis.indexing: false
• python.analysis.typeCheckingMode: strict

Code Snippet

from typing import TypeAlias

Foo: TypeAlias = "Bar"

class Bar:
    pass

x: Foo
x = Bar()

Repro Steps

Copy-paste the above code and see Pylance's highlighting / hover type hints.

Expected behavior

The type hints are correct, and Pylance does not error. The code typechecks according to mypy 0.991, and forward references in explicit type aliases are supported in PEP 613

Actual behavior

The type hints give red underlines. Bar is "Unknown".

[erictraut]

Thanks for the bug report. This will be addressed in an upcoming release.

[rchiodo]

This issue has been fixed in prerelease version 2022.11.41, which we've just released. You can find the changelog here: CHANGELOG.md