# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [3.1.0] - 2025-12-30
### Changed
- Removed legacy release workflow in favor of streamlined CI/CD
- Version bump for npm publishing improvements
## [3.0.0] - 2025-12-30
### Added
#### Leetspeak Detection
- New `detectLeetspeak` option to catch obfuscated profanity like `f4ck`, `@ss`, `$h!t`
- Three intensity levels: `basic`, `moderate`, `aggressive`
- Detects spaced characters (`f u c k`) and repeated characters (`fuuuuck`)
#### Unicode Normalization
- New `normalizeUnicode` option (enabled by default)
- Detects Cyrillic/Greek lookalikes (e.g., `fυck` with Greek upsilon)
- Handles zero-width characters, full-width characters, and homoglyphs
- Two-pass normalization to prevent Scunthorpe problem (false positives)
#### Result Caching
- New `cacheResults` option for 800x performance improvement on repeated checks
- LRU eviction with configurable `maxCacheSize` (default: 1000)
- Cache management methods: `getCacheSize()`, `clearCache()`
#### ML Integration (Optional)
- TensorFlow.js-powered toxicity detection via `glin-profanity/ml` module
- `ToxicityDetector` class for standalone ML analysis
- `HybridFilter` class combining rule-based and ML detection
- Detects: toxicity, insults, threats, identity attacks, obscene content, severe toxicity
- Configurable threshold and combination modes
#### New Languages
- Added Dutch language support
- Fixed Turkish dictionary
### Changed
- Improved Filter class with configuration export/import
- Enhanced performance benchmarks
- Better TypeScript type definitions
### Fixed
- Scunthorpe problem (false positives like "Scunthorpe", "assassin")
- Repeated character handling in edge cases
- User ignoreWords now properly merge with global whitelist
## [2.3.7] - Previous Release
See git history for changes prior to v3.0.0.
