unicode-segmenter

Measure runtime perf, bundle size, and memory impact of unicode-segmenter changes. Use when evaluating any src/ change, running yarn perf / bundle-stats / memory-stats, comparing against a baseline revision, or when benchmark numbers look noisy or contradictory.

Archive benchmark runs into benchmark/grapheme/_records and regenerate the HTML report. Use when adding or refreshing a perf record for Node.js, Bun, Chrome, Firefox, or Safari, or when asked to update the benchmark report.

Investigate CodSpeed CI performance reports on PRs — regressions or improbable improvements that don't reproduce locally. Use when the CodSpeed check flags a delta and you need to replicate or explain it.

Regenerate the generated Unicode data modules (src/_grapheme_data.js, _general_data.js, _emoji_data.js, test/_unicode_testdata.js) and verify correctness. Use when bumping the Unicode version, editing scripts/unicode.js or scripts/lib/encoding.js, or changing grapheme break rules or the pair table.