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# TASK-001 Working Notes
## Research
### Previous Developer's Work
**Branch**: `12-upgrade-dependencies`
**Commits found**:
1. Package.json updates across all packages
2. "Update rendering to use non-deprecated react-dom calls"
**What they changed**:
- React 17.0.2 → 19.0.0
- react-instantsearch-hooks-web → react-instantsearch
- Removed deprecated react-json-view, added @microlink/react-json-view
- Updated webpack 5.74.0 → 5.101.3
- Removed Node.js upper version cap (was <=18, now 16+)
- Removed Storybook 6.x packages
### React 19 Breaking Changes to Watch For
1. **Automatic Batching** - State updates are now automatically batched
2. **Concurrent Features** - May affect node graph rendering timing
3. **Strict Mode** - Double-renders effects for cleanup detection
4. **Removed APIs**:
- `ReactDOM.render()``createRoot()`
- `ReactDOM.hydrate()``hydrateRoot()`
- `ReactDOM.unmountComponentAtNode()``root.unmount()`
### react-instantsearch Changes
The package was renamed from `react-instantsearch-hooks-web` to `react-instantsearch`.
Most APIs are compatible, but verify:
- `useHits`
- `useSearchBox`
- `InstantSearch` component props
### Files to Search
```bash
# Find ReactDOM.render usage
grep -rn "ReactDOM.render" packages/ --include="*.ts" --include="*.tsx" --include="*.js"
# Find old instantsearch imports
grep -rn "react-instantsearch-hooks-web" packages/
# Find any remaining TSFixme (for awareness, not this task)
grep -rn "TSFixme" packages/ --include="*.ts" --include="*.tsx"
```
---
## Assumptions
- [ ] Previous dev's changes are on `12-upgrade-dependencies` branch - **VERIFY**
- [ ] Build was working before their changes - **VERIFY by checking main**
- [ ] No other branches need to be merged first - **VERIFY**
---
## Implementation Notes
### Approach Decisions
[To be filled in during work]
### Gotchas / Surprises
[To be filled in during work]
---
## Debug Log
### [Date/Time]
- **Trying**: [what you're attempting]
- **Result**: [what happened]
- **Next**: [what to try next]
---
## Useful Commands
```bash
# Clean install
rm -rf node_modules packages/*/node_modules
npm install
# Build editor
npm run build:editor
# Run tests
npm run test:editor
# Type check
npx tsc --noEmit
# Start dev server
npm run dev
# Find files with pattern
grep -rn "pattern" packages/ --include="*.ts" --include="*.tsx"
# Check git status
git status
git diff --stat
# Compare with main
git diff main..HEAD --stat
```
---
## Questions to Resolve
- [ ] Are there any other branches that should be merged first?
- [ ] Did the previous dev test the build?
- [ ] Are there any known issues documented anywhere?
---
## Links & Resources
- [React 19 Blog Post](https://react.dev/blog/2024/04/25/react-19)
- [React 19 Upgrade Guide](https://react.dev/blog/2024/04/25/react-19-upgrade-guide)
- [react-instantsearch Migration](https://www.algolia.com/doc/guides/building-search-ui/upgrade-guides/react/)