---
phase: 01-core-infrastructure
plan: 01
subsystem: infra
tags: [typescript, esm, nodejs, cli]

# Dependency graph
requires: []
provides:
  - TypeScript project with ESM configuration
  - Build tooling (tsc, tsx, rimraf)
  - CLI entry point at dist/bin/cw.js
  - Library entry point at dist/index.js
affects: [01-02, 01-03, 01-04, 01-05]

# Tech tracking
tech-stack:
  added: [typescript, tsx, rimraf, commander, execa]
  patterns: [ESM modules, NodeNext resolution]

key-files:
  created: [package.json, tsconfig.json, .gitignore, src/index.ts, src/bin/cw.ts]
  modified: []

key-decisions:
  - "Merged Tasks 1 and 2 since build verification required source files"

patterns-established:
  - "ESM with NodeNext module resolution"
  - "Version exported from src/index.ts, imported in bin entry"

# Metrics
duration: 2min
completed: 2026-01-30
---

# Phase 1 Plan 01: Project Foundation Summary

**TypeScript ESM project with commander/execa dependencies, tsc build, tsx dev runner, and cw CLI entry point**

## Performance

- **Duration:** 2 min
- **Started:** 2026-01-30T12:08:28Z
- **Completed:** 2026-01-30T12:10:19Z
- **Tasks:** 2
- **Files modified:** 6

## Accomplishments

- Initialized Node.js project with ESM (`"type": "module"`)
- Configured TypeScript with ES2022 target and NodeNext module resolution
- Added core dependencies: commander (CLI), execa (process management)
- Added dev tooling: typescript, tsx (dev runner), rimraf (clean)
- Created CLI entry point that prints version
- Created library entry point exporting VERSION constant

## Task Commits

Each task was committed atomically:

1. **Task 1: Initialize Node.js project with TypeScript and ESM** - `d284603` (chore)
2. **Task 2: Create source structure and entry point** - included in Task 1 commit (see deviation)

**Plan metadata:** (this commit)

## Files Created/Modified

- `package.json` - ESM project config with scripts, dependencies, bin entry
- `package-lock.json` - Dependency lock file
- `tsconfig.json` - TypeScript compiler options for ES2022/NodeNext
- `.gitignore` - Excludes node_modules and dist
- `src/index.ts` - Library entry point with VERSION export
- `src/bin/cw.ts` - CLI entry point with shebang

## Decisions Made

- Merged Tasks 1 and 2 execution since build verification required source files to exist

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 3 - Blocking] Created source files during Task 1**
- **Found during:** Task 1 verification (npm run build)
- **Issue:** Plan specified Task 1 should work "even with empty src" but tsc requires valid source files to compile
- **Fix:** Created minimal src/index.ts and src/bin/cw.ts during Task 1
- **Files modified:** src/index.ts, src/bin/cw.ts
- **Verification:** Build succeeds, CLI runs
- **Committed in:** d284603 (Task 1 commit)

---

**Total deviations:** 1 auto-fixed (blocking)
**Impact on plan:** Task 2 had no separate commit since its files were already created in Task 1. All work completed successfully.

## Issues Encountered

None

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness

- Project foundation complete
- Build tooling working (npm run build, npm run dev, npm run clean)
- Ready for 01-02: CLI Entry Point

---
*Phase: 01-core-infrastructure*
*Completed: 2026-01-30*
