v0.9.0: Comprehensive Null/Undefined Safety

🛡️ Null/Undefined Safety for All Functions

This release adds comprehensive null/undefined handling across the entire library, making it safer and more predictable to use.

✨ What's New

Complete Null Safety - All functions now handle null/undefined gracefully:

// No more runtime errors!
slugify(null);        // Returns: null
slugify(undefined);   // Returns: undefined

// Consistent behavior across all utilities
isEmail(null);        // Returns: false
wordCount(null);      // Returns: 0

🚀 Key Improvements

• 22+ functions updated with defensive null checks
• Zero runtime errors - No more TypeErrors on null/undefined inputs
• Consistent behavior patterns:
  • String functions preserve null/undefined
  • Boolean functions return false
  • Array functions return []
  • Number functions return 0
• Full backward compatibility maintained for valid inputs
• 36 comprehensive tests for null/undefined handling

📊 Impact

• ✅ No performance degradation - Benchmarks show consistent speed
• ✅ Minimal size impact - Only 0.02 kB bundle increase
• ✅ Better developer experience - No need for defensive checks
• ✅ TypeScript alignment - Works perfectly with strict null checks

📦 Installation

npm install [email protected]

📚 Documentation

The README now includes a dedicated Null/Undefined Safety section with examples and behavior patterns.

Full Changelog: v0.8.0...v0.9.0