fix(semantic): report error on await-using inside nested static block

[camc314]

Fixes missing errors on the following case:

class C {
    static {
        {
            await using y = null;
        }
    }
}

[camc314]

• fix(semantic): report error on await-using inside nested static block #20746 👈 (View in Graphite)
• main

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[codspeed-hq]

Merging this PR will not alter performance

✅ 53 untouched benchmarks
⏩ 3 skipped benchmarks¹

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_{Comparing c/03-25-fix_parser_report_error_on_await-using_inside_nested_static_block (6cccc2e) with main (c5c7210)}

Footnotes

1. 3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Copilot]

Pull request overview

Updates the semantic checks so await using declarations inside nested scopes of a class static initialization block correctly produce an error, aligning behavior with TypeScript’s conformance expectations.

Changes:

• Expand the class-static-block detection for await using declarations by walking scope ancestors (stopping at function boundaries).
• Add a reusable is_in_class_static_block helper to support the new behavior.
• Update the TypeScript parser coverage snapshot to include the new diagnostic output.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 1 comment.

File	Description
tasks/coverage/snapshots/parser_typescript.snap	Snapshot updated to include the new “Cannot use 'await using' in class static initialization block” diagnostic.
crates/oxc_semantic/src/checker/javascript.rs	Introduces ancestor-based class static block detection and uses it for await using variable declarations.

[camc314]

Merge activity

• Mar 25, 6:27 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Mar 25, 6:27 PM UTC: camc314 added this pull request to the Graphite merge queue.
• Mar 25, 6:32 PM UTC: Merged by the Graphite merge queue.