IgorBabkin / ts-ioc-container / 20035658635

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refactor(lib): reorganize utils and metadata into modular structure

Breaking down monolithic files for better maintainability:

**Utils reorganization:**
- Split utils.ts into specialized modules:
  - utils/fp.ts - Functional programming utilities (pipe with type transformations)
  - utils/basic.ts - Basic types and type guards (constructor, Is utilities)
  - utils/array.ts - Array utilities (fillEmptyIndexes, Filter)
  - utils/proxy.ts - Proxy utilities (lazyProxy, toLazyIf)
  - utils/promise.ts - Promise utilities (promisify)

**Metadata reorganization:**
- Split metadata.ts into domain-specific modules:
  - metadata/class.ts - Class metadata utilities
  - metadata/parameter.ts - Parameter metadata utilities
  - metadata/method.ts - Method metadata utilities

**Pipe function enhancement:**
- Enhanced MapFn type to support input/output type transformations (MapFn<A, B>)
- Added 10 overloads for explicit type transformations (A→B, A→B→C, etc.)
- Added fallback overload for same-type transformations
- Comprehensive tests for type transformations

**Tests:**
- Added comprehensive pipe function tests (10 test cases)
- Updated test imports to match new structure
- All 182 tests passing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

132 of 155 branches covered (85.16%)

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70 of 71 new or added lines in 20 files covered. (98.59%)

622 of 644 relevant lines covered (96.58%)

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