# Typescript Audit Report

**Branch**: fix/timing-based-test-waits
**Base**: main
**Date**: 2025-12-28 22:51:00

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## Summary

This PR replaces timing-based test waits (`setTimeout`) with deterministic event-driven patterns (`flushEventLoop`). All TypeScript changes in this PR are properly typed with no type safety violations introduced.

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## Changed Files Analyzed

| File | Lines Changed | TypeScript Status |
|------|---------------|-------------------|
| src/bootstrap.ts | +8 | PASS - Properly typed `resourceMonitor?: ResourceMonitor` option |
| tests/fixtures/test-doubles.ts | +76 | PASS - Event synchronization methods properly implemented |
| tests/utils/event-helpers.ts | (imported) | PASS - Existing utility, not modified |
| tests/integration/event-flow.test.ts | ~20 | PASS - setTimeout replaced with flushEventLoop |
| tests/integration/service-initialization.test.ts | ~8 | PASS - setTimeout replaced with flushEventLoop |
| tests/integration/task-dependencies.test.ts | ~50 | PASS - Added TestResourceMonitor, replaced timeouts |
| tests/integration/worker-pool-management.test.ts | ~14 | PASS - setTimeout replaced with flushEventLoop |
| tests/unit/core/domain.test.ts | ~12 | PASS - Date.now() mocking for deterministic tests |
| tests/unit/core/events/event-bus-request.test.ts | ~2 | PASS - Async delay replaced with Promise.resolve() |
| tests/unit/core/result.test.ts | ~8 | PASS - Removed fake timers, use direct async |
| tests/unit/implementations/dependency-repository.test.ts | ~12 | PASS - Date.now() mocking added |
| tests/unit/services/handlers/dependency-handler.test.ts | ~20 | PASS - setTimeout replaced with flushEventLoop |
| tests/unit/services/handlers/worker-handler.test.ts | ~40 | PASS - setTimeout replaced with flushEventLoop |

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## [RED] Issues in Your Changes (BLOCKING)

**None found.**

All TypeScript changes in this PR are properly typed:
- New `resourceMonitor` bootstrap option uses correct interface type
- Event synchronization methods use appropriate generic type parameters
- Vitest mocking patterns are correctly typed
- `flushEventLoop()` utility function returns proper `Promise<void>` type

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## [WARNING] Issues in Code You Touched (Should Fix)

**None directly related to PR changes.**

The following observations are informational and do not require changes in this PR:

1. **tests/fixtures/test-doubles.ts:203-206** - `waitFor<T = any>` uses default `any` type
   - **Assessment**: Acceptable for test utility - callers can specify explicit types when needed
   - **Severity**: INFORMATIONAL

2. **tests/fixtures/test-doubles.ts:264-270** - `removeListener()` casts handler to `any`
   - **Assessment**: Simplified implementation note present in code comments
   - **Severity**: INFORMATIONAL

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## [INFO] Pre-existing Issues (Not Blocking)

These issues exist in the codebase but were NOT introduced by this PR:

1. **tests/fixtures/test-doubles.ts:527** - `Buffer` not assignable to `string`
   - Pre-existing type mismatch in `simulateOutput()` method

2. **tests/fixtures/mock-resource-monitor.ts:8** - Missing `getThresholds()` method
   - MockResourceMonitor doesn't fully implement ResourceMonitor interface

3. **tests/integration/task-dependencies.test.ts:6** - Wrong import path for EventBus
   - `EventBus` imported from `events.js` but exported from `event-bus.js`

4. **tests/integration/event-flow.test.ts** - Multiple Priority type mismatches
   - String literals `"P0"`, `"P1"`, `"P2"` not matching `Priority` type

5. **tests/unit/services/handlers/worker-handler.test.ts** - MockResourceMonitor incomplete
   - Missing `getThresholds()` method, wrong property names in `getResources()`

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## Summary Metrics

**Your Changes:**
- [RED] CRITICAL: 0
- [RED] HIGH: 0
- [RED] MEDIUM: 0

**Code You Touched:**
- [WARNING] HIGH: 0
- [WARNING] MEDIUM: 0
- [INFO] LOW: 2

**Pre-existing:**
- [INFO] MEDIUM: 5

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## Typescript Score: 9/10

**Deduction**: -1 for use of `any` type in test utilities (acceptable for test code)

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## Merge Recommendation

**APPROVED**

The PR introduces no TypeScript issues. All changes follow proper typing:
- Bootstrap options properly extend the interface
- Event synchronization utilities are correctly typed
- Timing-based waits replaced with type-safe alternatives
- Date mocking uses proper vitest patterns

The pre-existing issues (wrong imports, missing interface methods) should be addressed in a separate technical debt PR.

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## PR Comments

No blocking issues found - no PR line comments created.

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**Report generated**: 2025-12-28 22:51
**Analyzer**: TypeScript Review Specialist
