📋 PR Summary

Branch: fix/silent-json-parse-errors
Target: zwbproducts/kilocode:main
Type: 🐛 Bug Fix

This PR fixes a bug where JSON parsing errors in the combineApiRequests function were silently swallowed, making debugging extremely difficult and potentially causing data loss.

🔗 Related Issues

• Fixes silent error handling anti-pattern
• Improves debuggability of API request processing
• See BUGFIX.md for detailed bug documentation

📝 Description

Problem

The combineApiRequests function had empty catch blocks that silently swallowed JSON parsing errors:

try { startData = JSON.parse(startMessage.text) } catch (e) {}  // Silent failure!
try { finishData = JSON.parse(message.text) } catch (e) {}      // Silent failure!

This made it impossible to debug issues when API request/response data was malformed.

Solution

Added proper warning logging with context (including timestamps) while preserving graceful degradation:

try {
    startData = JSON.parse(startMessage.text)
} catch (e) {
    console.warn(
        `[combineApiRequests] Failed to parse api_req_started JSON (ts=${startMessage.ts}):`,
        e instanceof Error ? e.message : String(e)
    )
}

📁 Changes

Modified Files

Change Statistics

• Lines Added: ~45
• Lines Removed: ~4
• Test Cases Added: 3

🧪 Testing

New Tests Added

✓ Error logging
  ✓ should log warning when api_req_started has malformed JSON
  ✓ should log warning when api_req_finished has malformed JSON
  ✓ should include timestamp in warning when parsing fails

Verification

• All existing tests pass
• New tests cover error logging behavior
• No TypeScript errors
• Graceful degradation verified (partial data still returned)

🔄 Changeset

---
"kilo-code": patch
---

Fix silent JSON parse errors in combineApiRequests - now logs warnings for debugging

✅ PR Checklist

• Code follows project style guidelines
• Changes are marked with kilocode_change comments
• Tests added for new functionality
• All tests pass
• No breaking changes
• Documentation updated (BUGFIX.md)
• Changeset created

📸 Screenshots/Logs

Before (Silent Failure)

// No output when JSON parsing fails - impossible to debug

After (Visible Warning)

[combineApiRequests] Failed to parse api_req_started JSON (ts=1000): Unexpected token 'm' at position 1

🚀 Deployment Notes

• Breaking Changes: None
• Migration Required: No
• Feature Flags: None
• Performance Impact: Minimal (only additional logging on errors)

👥 Reviewers

Please review:

1. Error message format and context
2. Test coverage adequacy
3. Compliance with kilocode_change marking guidelines

🤖 AI Code Reviewer Activation

This PR is ready for automated review. The Kilo Code AI reviewer should:

1. Verify error handling patterns
2. Check test coverage
3. Validate TypeScript types
4. Ensure kilocode_change markers are properly placed

This PR improves the developer experience by making API request processing errors visible and debuggable.