fix(minifier): do not remove using x =

[Boshen]

fixes #13050

[Boshen]

• fix(minifier): do not remove using x =  #13052 👈 (View in Graphite)
• main

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[Copilot]

Pull Request Overview

This PR fixes a bug in the minifier where using and await using declarations were being incorrectly removed as unused. The fix prevents the removal of these declarations because their usage through Symbol.dispose cannot be statically determined.

• Added a safety check to prevent removal of using declarations
• Implemented a new is_using() helper method to identify using declarations
• Added test coverage for both using and await using scenarios

Reviewed Changes

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

File	Description
crates/oxc_minifier/src/peephole/remove_unused_declaration.rs	Added safety check to prevent removal of using declarations and corresponding tests
crates/oxc_ast/src/ast_impl/js.rs	Added is_using() helper method to identify using declarations

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[graphite-app]

Merge activity

• Aug 13, 6:20 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Aug 13, 6:26 AM UTC: Merged by the Graphite merge queue.

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #13052 will not alter performance

_{Comparing 08-13-fix_minifier_do_not_remove_using_x_ (6686cc4) with main (92a3550)}

Summary

✅ 34 untouched benchmarks