feat(minifier): add drop_labels feature

[sapphi-red]

Implemented drop_labels feature, which is implemented in esbuild and rolldown.
The plan is to use this in Rolldown.

[sapphi-red]

• feat(napi/minify): expose drop_labels option #14635
• feat(minifier): add drop_labels feature #14634 👈 (View in Graphite)
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #14634 will not alter performance

_{Comparing 10-15-feat_minifier_add_drop_labels_feature (d09c7ee) with main (73f2cbb)¹}

Summary

✅ 37 untouched

Footnotes

1. No successful run was found on main (d09c7ee) during the generation of this report, so 73f2cbb was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[Copilot]

Pull Request Overview

Add support for dropping labeled statements during minification via a new drop_labels option, aligning with esbuild/rolldown behavior.

• Introduces CompressOptions.drop_labels (FxHashSet) in oxc_minifier
• Implements removal of matching labeled statements in peephole optimizer
• Adds tests for dropping specific labels; wires default in napi, adds rustc-hash dep there

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
napi/minify/src/options.rs	Imports FxHashSet and sets drop_labels to default when converting to internal options
napi/minify/Cargo.toml	Adds rustc-hash workspace dependency
crates/oxc_minifier/src/options.rs	Adds drop_labels option to CompressOptions with docs and defaults
crates/oxc_minifier/src/peephole/remove_dead_code.rs	Removes labeled statements when label is in drop_labels
crates/oxc_minifier/tests/peephole/dead_code_elimination.rs	Adds tests and a helper to verify drop_labels behavior

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[graphite-app]

Merge activity

• Oct 16, 6:06 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Oct 16, 6:13 AM UTC: Merged by the Graphite merge queue.