feat(minifier): fold (!0).toString() to true

[Boshen]

No description provided.

[Copilot]

Pull Request Overview

This pull request enhances the JavaScript minifier to optimize boolean expressions followed by .toString() calls, specifically folding expressions like (!0).toString() to the string literal 'true'. The change improves minifier performance by evaluating constant expressions at compile time.

• Extends constant evaluation to handle boolean expressions in .toString() calls
• Adds test coverage for the new optimization patterns
• Refactors the toString evaluation logic to be more generic

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
crates/oxc_minifier/src/peephole/replace_known_methods.rs	Adds test cases for (!0).toString() and (!1).toString() optimizations
crates/oxc_ecmascript/src/constant_evaluation/value.rs	Adds is_null() helper method for null value checking
crates/oxc_ecmascript/src/constant_evaluation/call_expr.rs	Refactors toString evaluation to use generic constant evaluation with null/undefined filtering

[Boshen]

• feat(minifier): fold (!0).toString() to true #12938 👈 (View in Graphite)
• main

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12938 will not alter performance

_{Comparing 08-09-feat_minifier_fold_0_.tostring_to_false_ (784796d) with main (4f31b73)¹}

Summary

✅ 34 untouched benchmarks

Footnotes

1. No successful run was found on main (a13b3ee) during the generation of this report, so 4f31b73 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[Boshen]

Merge activity

• Aug 9, 2:45 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Aug 9, 2:46 PM UTC: Boshen added this pull request to the Graphite merge queue.
• Aug 9, 2:51 PM UTC: Merged by the Graphite merge queue.