Break down 948-line monolithic component into 11 focused modules following
Vercel React best practices:
**Module Structure:**
- types.ts: Centralized type definitions and constants
- hooks/: Custom hooks for data management (useReportData, useChartData, useReportFilters)
- components/: Reusable UI components (MetricSelector, ViewModeToggle, UserFilter, ReportChart, Tooltips)
- utils/: Parser and aggregator utility functions
**Key Improvements:**
- Reduced main component from 948 to ~200 lines (79% reduction)
- Separated concerns: data fetching, state management, and UI rendering
- Enhanced reusability and testability of individual components
- Maintained backward compatibility with existing imports
**Additional Fixes:**
- Fixed tooltip displaying duplicate average time values
- Formatted time values to 1 decimal place in both views
- Removed redundant time display from tooltip footer
**Performance Optimizations Applied:**
- Moved tooltip components outside parent component (rerender-no-inline-components)
- Hoisted regex pattern creation outside loops (js-hoist-regexp)
- Used functional setState updates (rerender-functional-setState)
- Memoized expensive computations and callbacks
All changes maintain existing functionality while improving code quality
and maintainability.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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