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# Changelog
This document records the version update history of the `@esengine/ecs-framework` core library.
---
## v2.2.20 (2025-12-04)
### Bug Fixes
- **System onAdded callback fix**: Fix issue where system `onAdded` callback was affected by registration order (#270)
- System initialization now triggers `onAdded` callback for existing matching entities
- Added `matchesEntity(entity)` method to check if an entity matches the system's query condition
- Scene added `notifySystemsEntityAdded/Removed` methods to ensure all systems receive entity change notifications
---
## v2.2.19 (2025-12-03)
### Features
- **System stable sorting**: Add stable sorting support for systems (#257)
- Added `addOrder` property for stable sorting when `updateOrder` is the same
- Ensures systems with same priority execute in add order
- **Module configuration**: Add `module.json` configuration file (#256)
- Define module ID, name, version and other metadata
- Support module dependency declaration and export configuration
---
## v2.2.18 (2025-11-30)
### Features
- **Advanced Performance Profiler**: Implement new performance analysis SDK (#248)
- `ProfilerSDK`: Unified performance analysis interface
- Manual sampling markers (`beginSample`/`endSample`)
- Automatic scope measurement (`measure`/`measureAsync`)
- Call hierarchy tracking and call graph generation
- Counter and gauge support
- `AdvancedProfilerCollector`: Advanced performance data collector
- Frame time statistics and history
- Memory snapshots and GC detection
- Long task detection (Long Task API)
- Performance report generation
- `DebugManager`: Debug manager
- Unified debug tool entry point
- Profiler integration
- **Property decorator enhancement**: Extend `@serialize` decorator functionality (#247)
- Support more serialization option configurations
### Improvements
- **EntitySystem test coverage**: Add complete system test cases (#240)
- Cover entity query, cache, lifecycle scenarios
- **Matcher enhancement**: Optimize matcher functionality (#240)
- Improved matching logic and performance
---
## v2.2.17 (2025-11-28)
### Features
- **ComponentRegistry enhancement**: Add new component registry features (#244)
- Support registering and querying component types by name
- Add component mask caching for performance optimization
- **Serialization decorator improvements**: Enhance `@serialize` decorator (#244)
- Support more flexible serialization configuration
- Improved nested object serialization
- **EntitySystem lifecycle**: Add new system lifecycle methods (#244)
- `onSceneStart()`: Called when scene starts
- `onSceneStop()`: Called when scene stops
---
## v2.2.16 (2025-11-27)
### Features
- **Component lifecycle**: Add component lifecycle callback support (#237)
- `onEnable()`: Called when component is enabled
- `onDisable()`: Called when component is disabled
- `onDestroy()`: Called when component is destroyed
- **ServiceContainer enhancement**: Improve service container functionality (#237)
- Support `Symbol.for()` pattern for service identifiers
- Added `@InjectProperty` property injection decorator
- Improved service resolution and lifecycle management
- **SceneSerializer enhancement**: New scene serializer features (#237)
- Support serialization of more component types
- Improved deserialization error handling
- **Property decorator extension**: Extend `@serialize` decorator (#238)
- Support `@range`, `@slider` and other editor hints
- Support `@dropdown`, `@color` and other UI types
- Support `@asset` resource reference type
### Improvements
- **Matcher tests**: Add Matcher test cases (#240)
- **EntitySystem tests**: Add complete entity system test coverage (#240)
---
## Version Notes
- **Major version**: Breaking changes
- **Minor version**: New features (backward compatible)
- **Patch version**: Bug fixes and improvements
## Related Links
- [GitHub Releases](https://github.com/esengine/ecs-framework/releases)
- [NPM Package](https://www.npmjs.com/package/@esengine/ecs-framework)
- [Documentation Home](./index.md)