fix(minifier): remove unused long array expressions

[sapphi-red]

Long array expressions are converted to "str1,str2".split(','), but that was not removed because it was not detected as sideeffect free. This PR fixes that by adding pure = true to the .split call.

[sapphi-red]

• fix(minifier): remove unused long array expressions #13752 👈 (View in Graphite)
• main

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[Copilot]

Pull Request Overview

This PR fixes an issue where long array expressions converted to string split operations were not being properly removed by the minifier due to missing side-effect annotations. The fix adds the pure = true annotation to .split() calls to ensure they are detected as side-effect free and can be removed when unused.

• Adds pure = true parameter to expression_call_with_pure for array-to-split transformations
• Updates test expectations to include /* @__PURE__ */ comments in generated code
• Adds test case to verify unused array expressions are properly removed

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #13752 will not alter performance

_{Comparing 09-14-fix_minifier_remove_unused_long_array_expressions (3d895cf) 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. ↩

[Boshen]

Merge activity

• 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, 1:20 PM UTC: Merged by the Graphite merge queue.