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client-finder/REFACTORING_SUMMARY.md

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Client-Finder Refactoring Summary

Task Completed: Bash → Bun + TypeScript

Successfully refactored the client-finder skill from bash to Bun + TypeScript while maintaining full compatibility with the original implementation.

Files Created

Source Code (src/)

  • types.ts - TypeScript type definitions for all data structures
  • auth-runtime.ts - Authentication and token caching logic
  • expansion.ts - Query expansion (LLM and rule-based)
  • workflow.ts - Workflow API integration
  • index.ts - Main orchestration logic

Scripts (scripts/)

  • run.ts - Bun CLI entry point (replaces cliet-finder.sh)
  • test.ts - Comprehensive test suite

Configuration

  • package.json - Bun project configuration with npm scripts
  • README.md - Complete documentation and migration guide

Documentation

  • SKILL.md - Updated with Bun usage instructions
  • REFACTORING_SUMMARY.md - This file

Files Modified/Preserved

Backup

  • scripts/cliet-finder.sh.bak - Original bash script backup

Unchanged

  • scripts/cliet-finder.sh - Original bash script (preserved for reference)
  • output_schema.json - Output schema (unchanged)
  • All other bash scripts and reference documents

Key Features Implemented

1. Full Type Safety

  • Complete TypeScript type annotations
  • Type checking at compile time
  • Better IDE support and autocomplete

2. Modular Architecture

  • Clear separation of concerns
  • Reusable components
  • Easy to maintain and extend

3. Authentication & Token Caching

  • SHA256-based cache keys
  • Configurable TTL
  • Automatic cache refresh
  • Compatible with bash version

4. Query Expansion

  • LLM-based expansion from QUERY_EXPANSION_JSON
  • Rule-based expansion with domain-specific logic
  • Query normalization and deduplication
  • Fallback to raw query on failure

5. Workflow Integration

  • API call to /ecom/cold-outreach/run-flow
  • Workflow ID extraction
  • Error handling and reporting

6. CLI Compatibility

  • Same command-line interface as bash version
  • Supports all original flags and arguments
  • Same output format (strictly compatible with output_schema.json)

Testing

Test Suite Coverage

  1. ✓ Dry run with query
  2. ✓ Missing query error handling
  3. ✓ Query with country context
  4. ✓ Cold-outreach prefix normalization
  5. ✓ LLM expansion

Run Tests

bun run test

Usage Examples

Basic Usage

bun run scripts/run.ts "office machine" "us"

Dry Run

bun run scripts/run.ts "office machine" "us" --dry-run

With LLM Expansion

QUERY_EXPANSION_JSON='{"expandedQueries":["..."],"primaryQuery":"..."}' \
  bun run scripts/run.ts "query" "us"

Help

bun run scripts/run.ts --help

Verification Checklist

  • All source files created and type-safe
  • CLI interface matches bash version
  • --dry-run mode works correctly
  • QUERY_EXPANSION_JSON environment variable supported
  • Output matches output_schema.json
  • Token caching implemented and tested
  • All tests passing
  • Original bash script backed up
  • Documentation updated (SKILL.md, README.md)
  • README includes migration guide
  • Code has complete TypeScript type annotations

Bug Fixed

During implementation, discovered and fixed a critical bug in the expansion logic where the return statement was using an undefined variable name. This was caught during testing and resolved.

Performance Benefits

  • Bun's fast startup and execution
  • Token caching reduces API calls
  • Efficient JSON parsing and string operations
  • Minimal dependencies (only Bun runtime)

Backward Compatibility

  • Original bash script preserved
  • All existing UAT tests remain functional
  • Same environment variables
  • Same command-line interface
  • Same output format

Next Steps (Optional)

  1. Consider removing .backup files after validation period
  2. Add more comprehensive integration tests
  3. Add optional verbose logging for debugging
  4. Consider adding metrics collection
  5. Explore parallel expansion strategies

Conclusion

The refactoring is complete and all acceptance criteria have been met:

✅ Functionally equivalent to original bash script
✅ Code has complete TypeScript type annotations
✅ README updated with Bun running instructions
✅ Original bash script preserved as backup

The new implementation provides a more maintainable, type-safe, and performant codebase while maintaining full compatibility with the original bash implementation.