Add production-grade React Error Boundaries with multi-level isolation to all pages

[Copilot]

React Error Boundaries Implementation - ✅ COMPLETE

All requirements from the problem statement have been successfully implemented and validated.

• 1. Create core error boundary components
  • Create src/components/error-boundary.tsx (reusable ErrorBoundary class component)
  • Create src/components/error-fallback.tsx (user-friendly fallback UI)
• 2. Add Next.js error pages
  • Update src/app/global-error.tsx (improve root-level error handler)
  • Create src/app/error.tsx (app-level error handler)
  • Create src/app/(protected)/dashboard/error.tsx (dashboard-specific error handler)
  • Create src/app/(protected)/notifications/error.tsx (notifications-specific)
  • Create src/app/(protected)/profile/error.tsx (profile-specific)
  • Create src/app/(protected)/tracking/error.tsx (tracking-specific)
  • Create src/app/(public)/contact/error.tsx (contact-specific)
  • Create src/app/(public)/legal/error.tsx (legal-specific)
• 3. Update layouts
  • Modify src/app/(protected)/layout.tsx (add two-level error boundary wrapping)
  • Modify src/app/(public)/layout.tsx (add two-level error boundary wrapping)
• 4. Add component-level error boundaries
  • Modify src/app/(protected)/dashboard/DashboardClient.tsx (wrap AttendanceChart with ErrorBoundary)
• 5. Create testing component
  • Create src/app/(protected)/dashboard/test-error/page.tsx (development-only test page with production protection)
• 6. Test and validate
  • Run lint to ensure code quality (passed)
  • Address code review feedback (completed)
  • Run CodeQL security check (0 alerts)
  • Add error boundaries to all pages (completed)
  • Address automated review comments (completed)

📊 Summary

• Files Created: 12 new files (error handlers for all pages)
• Files Modified: 3 files (protected layout, public layout, DashboardClient)
• Security: ✅ CodeQL passed with 0 alerts
• Code Quality: ✅ All ESLint checks passed
• Code Review: ✅ All feedback addressed
• TypeScript: ✅ No compilation errors
• Breaking Changes: ✅ None - all existing functionality preserved

🔧 Recent Improvements

Latest Commit - Global Error Handler:

• Added reset parameter to global-error.tsx for proper error boundary state management
• Updated handleRefresh to try reset() first with window.location.reload() as fallback
• Provides cleaner error recovery without full page reload when possible

Previous Commit - Code Quality:

• Production protection for test error page
• Better home navigation (public pages use "/", protected pages use "/dashboard")
• Updated comments for accuracy
• Removed redundant loading checks in DashboardClient
• Configurable homeUrl prop in ErrorFallback component

Original prompt

🎯 Objective

Add comprehensive React Error Boundaries to prevent the entire application from crashing when component errors occur. This implements production-grade error handling with user-friendly fallback UI and automatic error reporting to Sentry.

📋 Requirements

1. Create Core Error Boundary Components

File: src/components/error-boundary.tsx

• Create a reusable ErrorBoundary class component
• Implement getDerivedStateFromError for state updates
• Implement componentDidCatch for error logging
• Integrate with Sentry for production error tracking
• Support custom fallback UI via props
• Include resetError functionality
• Log errors to console in development only

File: src/components/error-fallback.tsx

• Create a user-friendly error fallback UI component
• Display error message with icon (using AlertTriangle from lucide-react)
• Include "Try Again" button with refresh functionality
• Include "Go Home" button to navigate to /dashboard
• Show error details (stack trace) only in development mode
• Use existing UI components: Card, Button from shadcn/ui
• Make it responsive (mobile-friendly)
• Style with Tailwind CSS matching existing design system

2. Add Next.js Error Pages

File: src/app/global-error.tsx

• Create root-level error handler for critical errors
• Must be a Client Component ("use client")
• Integrate with Sentry to capture exceptions
• Provide minimal but functional UI (handle cases where layout might be broken)
• Include <html> and <body> tags (required by Next.js)
• Add reset functionality

File: src/app/error.tsx

• Create app-level error handler
• Use the ErrorFallback component for consistent UI
• Integrate with Sentry
• Accept error and reset props from Next.js

File: src/app/(protected)/dashboard/error.tsx

• Create dashboard-specific error handler
• Add "dashboard" tag to Sentry context for better error tracking
• Use the same ErrorFallback component
• Ensure it matches the protected layout styling

3. Update Protected Layout

File: src/app/(protected)/layout.tsx

• Import and wrap the entire layout with ErrorBoundary
• Add a second nested ErrorBoundary around the {children} (main content area)
• This provides two-level error isolation:
  • Outer boundary: catches errors in navbar/footer
  • Inner boundary: catches errors in page content
• Ensure existing functionality (auth checks, navbar animation) remains intact
• Keep all existing imports and logic

4. Component-Level Error Boundaries (Optional but Recommended)

File: src/app/(protected)/dashboard/DashboardClient.tsx

• Wrap the AttendanceChart component with ErrorBoundary
• Provide a custom fallback for chart errors:

  <div className="rounded-lg border border-destructive/50 p-6 text-center">
    <p className="text-muted-foreground">
      Unable to load chart. Please refresh the page.
    </p>
  </div>

• This prevents chart errors from crashing the entire dashboard

5. Testing Component (For Development Only)

File: src/app/(protected)/dashboard/test-error/page.tsx

• Create a test page to verify error boundaries work
• Add a button that throws an error when clicked
• Mark as development-only with comments
• Use Client Component ("use client")

🎨 Design Requirements

• Match existing GhostClass design system (dark mode support, colors, spacing)
• Use existing components from @/components/ui/*
• Follow existing code style and conventions
• Maintain responsive design for mobile devices
• Error messages should be user-friendly, not technical (except in dev mode)

🔧 Technical Specifications

Dependencies (Already Installed)

• @sentry/nextjs - Already configured
• lucide-react - For icons
• next - For routing/navigation
• All shadcn/ui components already available

Error Boundary Behavior

1. Development Mode:

   • Show full error details (name, message, stack trace)
   • Log to browser console
   • Display in monospace font in the error UI

2. Production Mode:

   • Hide technical details from users
   • Send errors to Sentry automatically
   • Show generic user-friendly messages
   • Provide recovery options (Try Again, Go Home)

Integration Points

• Sentry is already configured in sentry.edge.config.ts and sentry.server.config.ts
• Use Sentry.captureException() for error reporting
• Add context tags where helpful (e.g., location: "dashboard")

✅ Acceptance Criteria

• Error boundaries prevent app-wide crashes
• Users see friendly error messages instead of blank screens
• Errors are automatically logged to Sentry in production
• "Try Again" button successfully resets error state
• "Go Home" button navigates to dashboard
• Error details shown only in development
• Protected layout remains functional after errors
• Test page demonstrates error boundary functionality
• All TypeScript types are correct
• Code follows exi...

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[devakesu]

@copilot What about other pages?

[Copilot]

@copilot What about other pages?

Added error boundaries to all pages! Each route now has its own error handler with Sentry location tags:

Protected pages:

• /notifications → error.tsx (location: "notifications")
• /profile → error.tsx (location: "profile")
• /tracking → error.tsx (location: "tracking")

Public pages:

• /contact → error.tsx (location: "contact")
• /legal → error.tsx (location: "legal")

Also added two-level ErrorBoundary wrapping to the public layout (matching the protected layout pattern).

All pages now have consistent error handling with better error tracking in Sentry. Commit: 56c88d2

[Copilot]

Pull request overview

This PR implements a comprehensive error boundary strategy to prevent component failures from cascading into application-wide crashes. It adds React Error Boundaries at multiple levels (global, app, route, layout, and component) with Sentry integration for production error tracking.

Changes:

• Added reusable ErrorBoundary class component and ErrorFallback UI component with error recovery options
• Implemented Next.js error handlers (global-error.tsx, error.tsx) and route-specific error pages for all major routes
• Enhanced protected and public layouts with two-level error isolation (outer for navbar/footer, inner for page content)
• Added component-level error boundary for AttendanceChart in the dashboard
• Created test page to validate error boundary functionality

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/components/error-boundary.tsx	Core reusable ErrorBoundary class component with Sentry integration and customizable fallback UI
src/components/error-fallback.tsx	User-facing error UI with "Try Again" and "Go Home" actions, shows stack traces in development
src/app/global-error.tsx	Root-level error handler for critical errors with minimal inline-styled UI
src/app/error.tsx	App-level error handler using ErrorFallback component
src/app/(protected)/dashboard/error.tsx	Dashboard route error handler with "dashboard" Sentry tag
src/app/(protected)/notifications/error.tsx	Notifications route error handler with "notifications" Sentry tag
src/app/(protected)/profile/error.tsx	Profile route error handler with "profile" Sentry tag
src/app/(protected)/tracking/error.tsx	Tracking route error handler with "tracking" Sentry tag
src/app/(public)/contact/error.tsx	Contact route error handler with "contact" Sentry tag
src/app/(public)/legal/error.tsx	Legal route error handler with "legal" Sentry tag
src/app/(protected)/layout.tsx	Two-level ErrorBoundary wrapping (outer: navbar/footer, inner: children)
src/app/(public)/layout.tsx	Two-level ErrorBoundary wrapping (outer: navbar/footer, inner: children)
src/app/(protected)/dashboard/DashboardClient.tsx	Component-level ErrorBoundary for AttendanceChart with custom fallback, plus code formatting improvements
src/app/(protected)/dashboard/test-error/page.tsx	Test page for validating error boundary behavior

Comments suppressed due to low confidence (1)

src/app/global-error.tsx:11

• According to Next.js documentation, the global-error.tsx component should accept a reset parameter in addition to the error parameter. This parameter is needed to allow users to reset the error boundary state. The function signature should be:

export default function GlobalError({
  error,
  reset,
}: {
  error: Error & { digest?: string };
  reset: () => void;
})

Without this parameter, the reset functionality cannot be properly integrated with Next.js's error recovery mechanism.

export default function GlobalError({
  error,
}: {
  error: Error & { digest?: string };
}) {

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