feat(minifier): evaluate .concat calls that has subsequent method calls

[sapphi-red]

x = ''.concat('a', ' ').concat('b').split(/[\\s\\n]+/)

was not compressed to

x = 'a b'.split(/[\\s\\n]+/)

. This PR changes the code to allow that.

[sapphi-red]

• feat(minifier): evaluate .concat calls that has subsequent method calls #14074 👈 (View in Graphite)
• main

---

How to use the Graphite Merge Queue

Add either label to this PR to merge it via the merge queue:

• 0-merge - adds this PR to the back of the merge queue
• hotfix - for urgent hot fixes, skip the queue and merge this PR next

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has enabled the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #14074 will not alter performance

_{Comparing 09-24-feat_minifier_evaluate_.concat_calls_that_has_subsequent_method_calls (1337811) with main (9ea9c38)¹}

Summary

✅ 33 untouched
⏩ 4 skipped²

Footnotes

1. No successful run was found on main (73b8bcc) during the generation of this report, so 9ea9c38 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

2. 4 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. ↩

[Copilot]

Pull Request Overview

This PR enables the minifier to optimize chained .concat() calls when they are followed by other method calls, allowing the concatenation to be evaluated before the subsequent method is applied.

• Modified the condition that prevents concat optimization when followed by method calls
• Added test cases to verify the optimization works with subsequent method calls like .join() and .split()

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
crates/oxc_minifier/src/peephole/replace_known_methods.rs	Updated condition to allow concat optimization when followed by non-concat method calls and added comprehensive test cases
tasks/minsize/minsize.snap	Updated snapshot reflecting minor size improvement in antd.js
tasks/track_memory_allocations/allocs_minifier.snap	Updated memory allocation snapshot with minor changes in cal.com.tsx and antd.js

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Boshen]

Merge activity

• Sep 25, 3:30 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 25, 3:30 PM UTC: Boshen added this pull request to the Graphite merge queue.
• Sep 25, 3:37 PM UTC: Merged by the Graphite merge queue.