v0.22.0 - Enhanced Unicode Support

Enhanced Unicode Support for reverse() and truncate()

Improved

• Production-grade grapheme cluster handling for both reverse() and truncate() functions
  • ZWJ (Zero-Width Joiner) emoji sequences preserved: family emojis (👨‍👩‍👧‍👦), flags (🏴‍☠️, 🇺🇸), professions (👨‍⚕️, 👩‍🚀)
  • Emoji with skin tone modifiers correctly handled (👍🏽, 👋🏾)
  • Diacritics and combining marks preserved (café, Malmö, naïve, decomposed Unicode)
  • ASCII fast-path optimization maintains performance for simple strings (no performance regression)

Performance

• Minimal bundle size impact for significant correctness improvement
  • reverse(): 67B → 307B (+240B for full Unicode support)
  • truncate(): 226B → 477B (+251B for full Unicode support)
  • Total bundle: 8.99 KB → 8.92 KB (slight decrease due to optimizations)
  • ASCII strings maintain original performance through fast-path checks

Test Coverage

• 26 new comprehensive test cases
  • 11 tests for reverse() covering ZWJ sequences, skin tones, diacritics, and mixed content
  • 15 tests for truncate() covering grapheme boundaries, emoji preservation, and edge cases
  • 100% code coverage maintained across all functions

Documentation

• Updated JSDoc examples to demonstrate Unicode handling capabilities
• Enhanced documentation site with Unicode examples
• Regenerated benchmark data reflecting new bundle sizes