Version Packages

[github-actions]

This PR was opened by the Changesets release GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.

Releases

unicode-segmenter@0.17.2

Patch Changes

• 7374446: Removed pinned graphemeSegments() in the module scope to make all APIs able to be three-shaken properly.

  It was introduced when they all use graphemeSegments() as the core. But now they are all have their own loop.

• 957898b: Optimize the hot loop based on a deep analysis of the V8 optimization chain.

  As the result, the bundle size, speed, and memory usage. All three axes are improved. See PR #144 for detailed explanation.

  • Bundle: −4.2% min+gzip, −3.9% min+brotli on unicode-segmenter/grapheme (2,453 → 2,351 gzip); −3.4% / −2.8% on the full entry
  • Hermes bytecode: −20.6% (20,015 → 15,892 bytes), −18.6% gzipped
  • Runtime (Node.js/V8, per benchmark case)
    • splitGraphemes() 1.5–2.2x, countGraphemes() 1.20–1.43x, graphemeSegments() 1.05–1.21x, collectGraphemes() 1.01–1.19x.
    • Bun/JSC gains are larger, and the interpreter tiers (Hermes, QuickJS) improve 5–23%
  • Memory: lookup tables 20.6 kB → 19.1 kB, retained heap 228 kB → 218 kB, module init 1.7 ms → 1.5 ms

  The state compaction strategy is the major part. It is valid across all optimization tiers of the V8 runtime (Jitless, Maglev, TurboFan) and has been consistently improved across all other engines.

  Another noticeable change is splitGraphemes(), it now owns its loop, just like countGraphemes().
  It produces a 30-60% performance improvement. The size increase is roughly free after compression, since the fourth byte-aligned copy of the loop back-references the other three. And the uncompressed size is amortized by other improvements.

  All the analysis have done by Claude Opus 5, well-done!

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/unicode-segmenter@145

commit: dceb7fd

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (7374446) to head (dceb7fd).

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #145   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9         9           
  Lines         1045      1045           
=========================================
  Hits          1045      1045           

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[codspeed-hq]

Merging this PR will not alter performance

✅ 48 untouched benchmarks

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_{Comparing changeset-release/main (dceb7fd) with main (7374446)}