fix(minifier): skip inlining constant in scopes with eval

[camc314]

fixes rolldown/rolldown#7846

[camc314]

• fix(mangler): reserve names from eval-containing scopes #18037
• fix(minifier): preserve return value of @__PURE__ IIFE in return statements #18036
• fix(minifier): skip inlining constant in scopes with eval #17926 👈 (View in Graphite)
• main

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[Copilot]

Pull request overview

This PR fixes a bug in the minifier where constant values were being incorrectly inlined in scopes containing eval() calls. Since eval() can modify variables in the current and parent scopes at runtime, constant inlining in such scopes could lead to incorrect behavior.

Changes:

• Added logic to detect scopes with direct eval using the ScopeFlags::DirectEval flag
• Modified the init_value method to skip constant initialization when eval is present
• Added comprehensive test cases to verify variables are not inlined in eval scopes

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
crates/oxc_minifier/src/ctx.rs	Added DirectEval flag check to prevent constant inlining in scopes containing eval
crates/oxc_minifier/tests/peephole/inline_single_use_variable.rs	Added test cases verifying variables are not inlined when eval is present in scope

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[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing c/01-12-fix_minifier_skip_inlining_constant_in_scopes_with_eval (5b501b9) with main (8ee6f80)}

Summary

✅ 38 untouched benchmarks
⏩ 7 skipped benchmarks¹

Footnotes

1. 7 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. ↩

[graphite-app]

Merge activity

• Jan 16, 5:20 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Jan 16, 5:33 AM UTC: Merged by the Graphite merge queue.