## Summary
- Snyk PR #2305 bumped `diff` from 8.0.2 to 8.0.3 in
`js/VSC-Extension/package.json` without regenerating the lockfile
- This causes `npm ci` to fail with a "package.json and
package-lock.json are in sync" error
- Ran `npm install` to regenerate `package-lock.json` (resolves `diff`
to 8.0.4, the latest matching `^8.0.3`)
## Test plan
- [x] Verified `npm ci` succeeds with the updated lockfile
- [x] Diff is minimal: only the `diff` package version change (4
insertions, 4 deletions)
## Summary
Adds a line-by-line performance profiler visualization to the webapp,
allowing users to compare execution times between original and optimized
code.
## Changes
### New Line Profiler View
- **`LineProfilerView.tsx`**: Side-by-side comparison component showing:
- Line-by-line execution times with heat map visualization
- Syntax highlighting using `prism-react-renderer`
- Collapsible function blocks
- Light/dark mode support
- Heat legend (cold → hot based on % time)
- **`lineProfilerParser.ts`**: Parser utilities for line profiler data:
- `parseLineProfilerResults()` - parses markdown table output from
Python's line_profiler
- `formatTime()` - converts timer units to human-readable format (ns,
µs, ms, s)
- `getHeatLevel()` - determines heat coloring based on % time
- **`/review-optimizations/[traceId]/profiler/page.tsx`**: New route for
the profiler view
### API Changes
- **`create-pr.ts`**: Adds "📊 Performance Profile" link to PR
description when profiler data exists
- **`github-app.ts`**: Removes line profiler data from metadata when PR
is closed/merged
- **`create-staging.ts`**, **`suggest-pr-changes.ts`**: Handle line
profiler data in staging
- **`staging-storage-strategy.ts`**: Interface updates for line profiler
fields
### Webapp Integration
- **`page.tsx`**: Added "Performance Profile" button (only visible when
profiler data exists)
- **`action.ts`**: Sends line profiler data when creating PR from webapp
Fixes CF-1018
https://codeflash-ai.slack.com/files/U08MSR1UN6L/F0A9YVDJY75/screen_recording_2026-01-21_at_10.03.18___pm.movhttps://github.com/HeshamHM28/my-best-repo/pull/21
linked to https://github.com/codeflash-ai/codeflash/pull/1139
---------
Co-authored-by: Aseem Saxena <aseem.bits@gmail.com>
- Updated property names from original_line_profiler_results and optimized_line_profiler_results to original_line_profiler and optimized_line_profiler for consistency.
- Adjusted related code in SidebarProvider and CommentThreadProvider to reflect the new property names.
- Ensured that the OptimizationService interface and its implementation are aligned with the updated property names.
- Added a function to normalize line endings to LF for consistent patch processing.
- Updated `showPatch` method to always use the native diff editor, removing the webview fallback.
- Improved handling of multi-file patches by opening separate diff editors for each file.
- Enhanced error handling and logging for better debugging and user feedback.
- Removed unused code related to pull request creation and secondary action buttons in the explanation panel.
fixes CF-932
# Pull Request Checklist
## Description
- [ ] **Description of PR**: Clear and concise description of what this
PR accomplishes
- [ ] **Breaking Changes**: Document any breaking changes (if
applicable)
- [ ] **Related Issues**: Link to any related issues or tickets
## Testing
- [ ] **Test cases Attached**: All relevant test cases have been
added/updated
- [ ] **Manual Testing**: Manual testing completed for the changes
## Monitoring & Debugging
- [ ] **Logging in place**: Appropriate logging has been added for
debugging user issues
- [ ] **Sentry will be able to catch errors**: Error handling ensures
Sentry can capture and report errors
- [ ] **Avoid Dev based/Prisma logging**: No development-only or
Prisma-specific logging in production code
## Configuration
- [ ] **Env variables newly added**: Any new environment variables are
documented in .env.example file or mentioned in description
---
## Additional Notes
<!-- Add any additional context, screenshots, or notes for reviewers
here -->
---------
Co-authored-by: codeflash-ai[bot] <148906541+codeflash-ai[bot]@users.noreply.github.com>
Co-authored-by: ali <mohammed18200118@gmail.com>
Co-authored-by: Kevin Turcios <106575910+KRRT7@users.noreply.github.com>
