# 🚀 Handoff Document: Week 2 Day 3

**From**: Week 2 Day 2 Session (TypeScript + Enhanced Testing)
**To**: Week 2 Day 3 Session (Go Parser Setup)
**Date**: 2025-10-23
**Branch**: `feature/v0.11.0-repository-map`

---

## 📊 Current State Summary

### ✅ Completed Work (Week 2 Day 2)

1. **Task 2**: Python Parser Refactoring ✅
   - PythonSymbolExtractor now uses PythonParser
   - All 13 tests passing (backward compatible)

2. **Task 3**: TypeScript Parser Implementation ✅
   - TypeScriptParser + TypeScriptSymbolExtractor
   - 24 tests (21 core + 3 enhanced)
   - Supports: interfaces, type aliases, generics, type annotations

3. **Enhanced Testing** ✅
   - Added 21 new tests (+16.8%)
   - Parser direct tests (14)
   - Integration tests (4)
   - TypeScript special features (3)
   - Coverage: parser.py 76%→86%, symbol_extractor.py 92%→93%

4. **Documentation** ✅
   - Updated CLAUDE.md, STATUS.md, README.md
   - Added usage examples (TypeScript API)
   - Created completion reports

### 📈 Test Statistics
```
Total: 146 tests (100% pass, ~2.1s)
├── Parser: 14 (PythonParser, JavaScriptParser, TypeScriptParser)
├── Python: 13
├── JavaScript: 23
├── TypeScript: 24
├── Integration: 4
└── Repository Map: 81

Coverage (Intelligence Module):
├── parser.py: 86%
├── symbol_extractor.py: 93%
└── repository_map.py: 92%
```

### 🗂️ File Inventory

**Modified Files** (5):
1. `CLAUDE.md` - Updated progress, package structure
2. `README.md` - Added TypeScript examples, language support
3. `pyproject.toml` - Added tree-sitter-typescript dependency
4. `clauxton/intelligence/symbol_extractor.py` - Added TypeScriptSymbolExtractor (211 lines)
5. `tests/intelligence/test_symbol_extractor.py` - Added integration tests (4)

**New Files** (11):
1. `clauxton/intelligence/parser.py` - BaseParser + 3 parsers (149 lines)
2. `tests/intelligence/test_parser.py` - 14 tests
3. `tests/intelligence/test_javascript_extractor.py` - 23 tests
4. `tests/intelligence/test_typescript_extractor.py` - 24 tests
5. `tests/fixtures/javascript/sample.js`
6. `tests/fixtures/javascript/empty.js`
7. `tests/fixtures/javascript/unicode.js`
8. `tests/fixtures/typescript/sample.ts`
9. `tests/fixtures/typescript/empty.ts`
10. `tests/fixtures/typescript/unicode.ts`
11. `STATUS.md` - Implementation status tracking
12. `docs/WEEK2_DAY1_COMPLETION.md` - Day 1 report
13. `docs/WEEK2_DAY2_COMPLETION.md` - Day 2 report
14. `docs/WEEK2_DAY2_START.md` - Day 2 start guide
15. `docs/WEEK2_DAY3_START.md` - **Day 3 start guide** ⭐

---

## 🎯 Next Task: Week 2 Day 3 (Go Parser)

### Objective
Implement Go language symbol extraction support

### Estimated Time
2-3 hours

### Deliverables
- [ ] GoParser in parser.py
- [ ] GoSymbolExtractor in symbol_extractor.py
- [ ] 20+ comprehensive tests
- [ ] 3 test fixtures (sample.go, empty.go, unicode.go)
- [ ] Documentation updates

### Target Symbols
1. Functions: `func Add(a, b int) int`
2. Methods: `func (r *Receiver) Method()`
3. Structs: `type User struct { Name string }`
4. Interfaces: `type Reader interface { Read() }`
5. Type aliases: `type Status string`

### Expected Outcome
```
Tests: 146 → 170 (+24, +16.4%)
Coverage: parser.py 86%→88%+
Language Support: Python ✅ | JavaScript ✅ | TypeScript ✅ | Go ✅
```

---

## 🚀 Quick Start Commands

### Environment Verification
```bash
# Navigate to project
cd /home/kishiyama-n/workspace/projects/clauxton

# Check branch
git branch  # Should be on feature/v0.11.0-repository-map
git status  # Review uncommitted changes

# Activate environment
source .venv/bin/activate

# Verify current state
pytest tests/intelligence/ -q
# Expected: 146 passed in ~2.1s

# Verify existing parsers
python -c "import tree_sitter_python; print('Python ✅')"
python -c "import tree_sitter_javascript; print('JavaScript ✅')"
python -c "import tree_sitter_typescript; print('TypeScript ✅')"
```

### Start Day 3 Implementation
```bash
# Read start guide
cat docs/WEEK2_DAY3_START.md

# Install Go parser
pip install tree-sitter-go
python -c "import tree_sitter_go; print('Go ✅')"

# Begin implementation
# (Follow docs/WEEK2_DAY3_START.md step-by-step)
```

---

## 📚 Important Files to Review

### Implementation Reference
1. **TypeScriptSymbolExtractor** (Latest, most complete):
   - File: `clauxton/intelligence/symbol_extractor.py`
   - Lines: 465-674
   - Features: interface, type_alias, class, function, method extraction

2. **TypeScriptParser**:
   - File: `clauxton/intelligence/parser.py`
   - Lines: 116-148
   - Pattern: Initialize with tree_sitter_typescript

3. **Test Structure**:
   - File: `tests/intelligence/test_typescript_extractor.py`
   - 24 tests covering all features + edge cases

### Documentation
1. `docs/WEEK2_DAY3_START.md` - **Complete implementation guide** ⭐
2. `docs/WEEK2_DAY2_COMPLETION.md` - Day 2 detailed report
3. `CLAUDE.md` - Project guidelines and context
4. `STATUS.md` - Current implementation status

---

## 🔧 Git State

### Uncommitted Changes (DO NOT COMMIT YET)
```
Modified (5 files):
- CLAUDE.md (progress update)
- README.md (TypeScript examples)
- clauxton/intelligence/symbol_extractor.py (TypeScriptSymbolExtractor)
- pyproject.toml (tree-sitter-typescript)
- tests/intelligence/test_symbol_extractor.py (integration tests)

New (15 files):
- clauxton/intelligence/parser.py
- tests/intelligence/test_parser.py
- tests/intelligence/test_javascript_extractor.py
- tests/intelligence/test_typescript_extractor.py
- tests/fixtures/javascript/* (3 files)
- tests/fixtures/typescript/* (3 files)
- STATUS.md
- docs/WEEK2_DAY*_*.md (4 files)
```

### Suggested Commit Strategy

**Option 1: Commit Week 2 Day 2 work now**
```bash
git add clauxton/ tests/ docs/ *.md pyproject.toml
git commit -m "feat(intelligence): add TypeScript support + enhanced testing

Week 2 Day 2 Complete

Task 2: Python Parser Refactoring
- Refactor PythonSymbolExtractor to use PythonParser
- All 13 tests passing (backward compatible)

Task 3: TypeScript Parser + Symbol Extraction
- Add TypeScriptParser with tree-sitter-typescript
- Add TypeScriptSymbolExtractor (interfaces, type aliases, generics)
- 24 TypeScript tests (100% pass, 93% coverage)

Enhanced Testing (+21 tests):
- Parser direct tests (14)
- Integration tests (4)
- TypeScript special features (3)
- Coverage: parser.py 86%, symbol_extractor.py 93%

Documentation:
- Updated CLAUDE.md, STATUS.md, README.md
- Added TypeScript usage examples
- Created completion reports

Test: 146/146 passed (100%)
Quality: ✅ mypy ✅ ruff ✅ pytest
Language: Python ✅ | JavaScript ✅ | TypeScript ✅"
```

**Option 2: Continue working, commit after Day 3**
- Keep current changes uncommitted
- Add Go implementation
- Create single large commit for Day 2 + Day 3

**Recommendation**: Option 1 (commit now for clean state)

---

## ⚠️ Important Notes

### Known Limitations (Documented)
1. **TypeScript enum/namespace**: Not extracted (test documents current behavior)
2. **Nested functions**: Deep nesting may be partial
3. **JSDoc/TSDoc**: Comment extraction returns None (future enhancement)

### Quality Standards Maintained
- ✅ 100% test pass rate
- ✅ 90%+ coverage target
- ✅ mypy strict mode (no errors)
- ✅ ruff compliant
- ✅ Backward compatibility

### Testing Pattern Established
For each new language:
1. Parser direct tests (4): init, parse, error handling
2. Extractor tests (20+): basic, edge cases, integration
3. Fixtures (3): sample, empty, unicode
4. Coverage target: 90%+

---

## 📞 Support Resources

### Documentation
- **Start Guide**: `docs/WEEK2_DAY3_START.md` (Complete step-by-step)
- **Project Context**: `CLAUDE.md` (Guidelines and patterns)
- **Current Status**: `STATUS.md` (Progress tracking)

### Code References
- **TypeScript Implementation**: Best reference for Go (most recent)
- **Parser Pattern**: `clauxton/intelligence/parser.py`
- **Test Pattern**: `tests/intelligence/test_typescript_extractor.py`

### External Resources
- Tree-sitter Go: https://github.com/tree-sitter/tree-sitter-go
- Go AST Explorer: https://astexplorer.net/
- Go Language Spec: https://go.dev/ref/spec

---

## ✅ Pre-Session Checklist

Before starting Week 2 Day 3:
- [ ] Review `docs/WEEK2_DAY3_START.md`
- [ ] Verify environment: `pytest tests/intelligence/ -q` (146 passed)
- [ ] Verify branch: `git branch` (feature/v0.11.0-repository-map)
- [ ] Review TypeScript implementation (reference code)
- [ ] Optional: Commit Week 2 Day 2 work for clean state

---

## 🎯 Success Criteria for Day 3

### Minimum Requirements
- 20+ Go tests passing (100%)
- GoParser + GoSymbolExtractor implemented
- Coverage > 90% for new code
- All existing 146 tests still passing
- Type checking passes
- Linting passes

### Stretch Goals
- Generic support (Go 1.18+)
- Embedded struct handling
- 24+ tests (match TypeScript)

---

## 📊 Progress Tracking

### Week 2 Roadmap
- [x] **Day 1**: JavaScript Parser (✅ Complete, 23 tests)
- [x] **Day 2**: TypeScript Parser + Enhanced Testing (✅ Complete, 24 tests + 21 enhanced)
- [ ] **Day 3**: Go Parser (🔄 Next, target: 20+ tests)
- [ ] **Day 4**: Rust Parser (target: 20+ tests)
- [ ] **Day 5-7**: Integration, Testing, Documentation

### v0.11.0 Milestone
- Week 1: ✅ Repository Map Foundation (81 tests)
- Week 2 Day 1-2: ✅ Python/JS/TS (146 tests)
- **Week 2 Day 3**: Go (target: 170 tests)
- Week 2 Day 4: Rust (target: 190 tests)
- Week 3: CLI/MCP Integration

---

**Status**: Ready for Week 2 Day 3
**Next Action**: Follow `docs/WEEK2_DAY3_START.md`
**Estimated Time**: 2-3 hours
**Good luck! 🚀**

---

**Document Version**: 1.0
**Created**: 2025-10-23
**Author**: Claude Code Assistant (Week 2 Day 2 Session)
**For**: Week 2 Day 3 Session
