feat(minifier): remove typeof guarded global access expressions

[sapphi-red]

Remove codes like

typeof x !== 'undefined' && x

refs #12981

[sapphi-red]

• feat(minifier): remove typeof guarded global access expressions #13751 👈 (View in Graphite)
• main

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[Copilot]

Pull Request Overview

This PR enhances the minifier to remove typeof guarded global access expressions, which are patterns commonly used to safely check if a global variable exists before accessing it. The optimization removes these redundant expressions when they don't have side effects.

• Adds early return logic for expressions without side effects in logical and conditional expression handlers
• Implements removal of typeof patterns like typeof x !== 'undefined' && x
• Includes comprehensive test coverage for various comparison operators with logical and conditional expressions

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[graphite-app]

Merge activity

• Sep 14, 8:26 AM UTC: sapphi-red added this pull request to the Graphite merge queue.
• Sep 14, 8:27 AM UTC: sapphi-red removed this pull request from the Graphite merge queue.
• Sep 14, 8:27 AM UTC: The Graphite merge queue couldn't merge this PR because it was in draft mode.
• Sep 14, 1:15 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Sep 14, 1:15 PM UTC: Boshen added this pull request to the Graphite merge queue.
• Sep 14, 1:26 PM UTC: Merged by the Graphite merge queue.

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #13751 will not alter performance

_{Comparing 09-14-feat_minifier_remove_typeof_guarded_global_access_expressions (a49d7cf) with main (c364ad1)¹}

Summary

✅ 37 untouched

Footnotes

1. No successful run was found on main (3d895cf) during the generation of this report, so c364ad1 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩