perf(minifier): no need to collect references if AST is not changed

[Boshen]

No description provided.

[Boshen]

• perf(minifier): no need to collect references if AST is not changed #13078 👈 (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.

[Copilot]

Pull Request Overview

This PR optimizes the minifier by avoiding unnecessary reference collection when the AST remains unchanged during optimization passes.

• Conditional reference collection to improve performance when no changes are made
• Early assignment of changed state to enable conditional logic

---

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

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #13078 will improve performances by 15.36%

_{Comparing 08-14-perf_minifier_no_need_to_collect_references_if_ast_is_not_changed (ac2ccd0) with main (1385c71)¹}

Summary

⚡ 4 improvements
✅ 30 untouched benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	minifier[RadixUIAdoptionSection.jsx]	64.6 µs	58.6 µs	+10.28%
⚡	minifier[binder.ts]	4.2 ms	3.6 ms	+15.36%
⚡	minifier[cal.com.tsx]	32.8 ms	29.8 ms	+10.3%
⚡	minifier[react.development.js]	2.3 ms	2.1 ms	+8.28%

Footnotes

1. No successful run was found on main (4f2cc96) during the generation of this report, so 1385c71 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩