docs: add comprehensive Phase 2 documentation
- Create detailed README.md with quick start and demo accounts - Add complete UI primitives documentation with examples - Document architecture patterns and design decisions - Update REBUILD_PLAN.md marking Phase 2 as complete - Include component usage guides and testing documentation - Document accessibility compliance and performance considerations Documentation provides complete developer onboarding experience with practical examples and architectural guidance. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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reactrebuild0825/ERROR_HANDLING_LOADING_GUIDE.md
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# Error Handling & Loading States Implementation Guide
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This guide covers the comprehensive error handling and loading state system implemented for the Black Canyon Tickets React rebuild.
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## 🎯 Overview
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The system provides robust error boundaries, loading states, and skeleton components that:
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- Catch and gracefully handle JavaScript errors
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- Provide smooth loading experiences with skeleton UI
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- Follow the glassmorphism design system
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- Include accessibility features
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- Support timeout handling for slow connections
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## 📁 File Structure
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```
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src/
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├── components/
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│ ├── errors/
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│ │ ├── AppErrorBoundary.tsx # Main error boundary component
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│ │ └── index.ts # Error components exports
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│ ├── loading/
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│ │ ├── LoadingSpinner.tsx # Spinner components with variants
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│ │ ├── RouteSuspense.tsx # Suspense wrapper with timeout
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│ │ ├── Skeleton.tsx # Skeleton loading components
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│ │ └── index.ts # Loading components exports
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│ └── ErrorBoundaryDemo.tsx # Demo component (optional)
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├── pages/
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│ └── ErrorPage.tsx # Error page components (404, 500, etc.)
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└── types/
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└── errors.ts # Error type definitions
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```
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## 🚨 Error Handling Components
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### AppErrorBoundary
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**Location:** `src/components/errors/AppErrorBoundary.tsx`
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**Purpose:** Catches JavaScript errors in React component tree and displays fallback UI.
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**Features:**
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- ✅ Automatic error detection and categorization
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- ✅ Retry functionality with attempt limits
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- ✅ Error severity assessment
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- ✅ Development mode debugging info
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- ✅ Recovery strategies (retry, reload, redirect)
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- ✅ Glassmorphism fallback UI
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- ✅ Error reporting integration points
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**Usage:**
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```tsx
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import { AppErrorBoundary } from './components/errors/AppErrorBoundary';
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// Wrap your app or components
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<AppErrorBoundary
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onError={(error) => console.log('Error:', error)}
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maxRetries={3}
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>
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<YourAppComponents />
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</AppErrorBoundary>
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```
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**Error Types Supported:**
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- `network` - Connection and API errors
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- `auth` - Authentication/authorization errors
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- `permission` - Access control errors
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- `validation` - Form/data validation errors
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- `timeout` - Request timeout errors
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- `rate_limit` - Rate limiting errors
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- `generic` - General JavaScript errors
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### ErrorPage Components
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**Location:** `src/pages/ErrorPage.tsx`
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**Purpose:** Dedicated error pages for different error scenarios.
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**Components Available:**
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- `ErrorPage` - Base error page component
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- `NotFoundPage` - 404 page
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- `UnauthorizedPage` - 403 page
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- `ServerErrorPage` - 500 page
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- `NetworkErrorPage` - Network error page
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- `TimeoutErrorPage` - Timeout error page
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- `MaintenancePage` - Maintenance mode page
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**Features:**
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- ✅ Glassmorphism styling
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- ✅ Contextual error messages
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- ✅ Action buttons (retry, go home, go back)
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- ✅ Support information
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- ✅ Development debugging details
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**Usage:**
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```tsx
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import { NotFoundPage, UnauthorizedPage } from './pages/ErrorPage';
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// In your router
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<Route path="/unauthorized" element={<UnauthorizedPage />} />
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<Route path="*" element={<NotFoundPage />} />
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```
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## ⏳ Loading State Components
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### LoadingSpinner
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**Location:** `src/components/loading/LoadingSpinner.tsx`
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**Purpose:** Animated loading spinners with multiple variants.
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**Variants:**
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- `LoadingSpinner` - Main animated spinner
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- `PulseLoader` - Simple pulse animation
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- `ShimmerLoader` - Shimmer effect with gradient
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- `DotsLoader` - Three-dot bouncing animation
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**Features:**
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- ✅ Multiple sizes (sm, md, lg, xl)
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- ✅ Color variants (primary, secondary, accent, muted)
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- ✅ Overlay mode for full-screen loading
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- ✅ Optional text labels
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- ✅ Glassmorphism styling
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**Usage:**
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```tsx
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import { LoadingSpinner } from './components/loading/LoadingSpinner';
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<LoadingSpinner
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size="lg"
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variant="accent"
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text="Loading..."
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overlay={true}
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/>
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```
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### RouteSuspense
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**Location:** `src/components/loading/RouteSuspense.tsx`
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**Purpose:** Enhanced Suspense wrapper for route-level code splitting.
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**Features:**
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- ✅ Timeout handling (default 10s)
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- ✅ Progressive loading states
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- ✅ Multiple skeleton types
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- ✅ Retry functionality
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- ✅ Accessibility announcements
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**Usage:**
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```tsx
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import { RouteSuspense } from './components/loading/RouteSuspense';
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<RouteSuspense
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skeletonType="page"
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loadingText="Loading application..."
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timeout={15000}
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>
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<LazyLoadedComponent />
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</RouteSuspense>
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```
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**Skeleton Types:**
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- `page` - Full page skeleton layout
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- `card` - Card-based skeleton layout
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- `list` - List item skeleton layout
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- `table` - Table skeleton layout
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- `custom` - Simple spinner fallback
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### Skeleton Components
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**Location:** `src/components/loading/Skeleton.tsx`
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**Purpose:** Comprehensive skeleton loading components.
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**Components Available:**
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- `BaseSkeleton` - Core skeleton element
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- `TextSkeleton` - Multi-line text skeleton
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- `AvatarSkeleton` - Circular avatar skeleton
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- `ButtonSkeleton` - Button-shaped skeleton
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- `Skeleton.Card` - Card layout skeleton
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- `Skeleton.List` - List layout skeleton
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- `Skeleton.Table` - Table layout skeleton
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- `Skeleton.Page` - Full page layout skeleton
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- `Skeleton.Form` - Form layout skeleton
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**Features:**
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- ✅ Glassmorphism styling
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- ✅ Animate pulse effect
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- ✅ Responsive layouts
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- ✅ Realistic content shapes
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- ✅ Loading text indicators
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**Usage:**
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```tsx
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import { Skeleton } from './components/loading/Skeleton';
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// Full page skeleton
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<Skeleton.Page loadingText="Loading dashboard..." />
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// Individual skeleton elements
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<Skeleton.Text lines={3} />
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<Skeleton.Avatar size="lg" />
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<Skeleton.Button size="md" />
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```
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## 🔧 Integration Guide
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### 1. App-Level Integration
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**Update App.tsx:**
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```tsx
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import { AppErrorBoundary } from './components/errors/AppErrorBoundary';
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import { RouteSuspense } from './components/loading/RouteSuspense';
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function App() {
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return (
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<AppErrorBoundary>
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<AuthProvider>
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<Router>
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<RouteSuspense skeletonType="page" timeout={15000}>
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<Routes>
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{/* Your routes */}
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</Routes>
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</RouteSuspense>
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</Router>
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</AuthProvider>
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</AppErrorBoundary>
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);
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}
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```
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### 2. Route-Level Protection
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**Update ProtectedRoute.tsx:**
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```tsx
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import { Skeleton } from '../loading/Skeleton';
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// Show skeleton during auth check
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if (isLoading) {
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return <Skeleton.Page loadingText="Verifying authentication..." />;
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}
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```
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### 3. Error Route Setup
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**Add error routes:**
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```tsx
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import {
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NotFoundPage,
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UnauthorizedPage,
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ServerErrorPage
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} from './pages/ErrorPage';
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// In your Routes
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<Route path="/unauthorized" element={<UnauthorizedPage />} />
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<Route path="/error/server" element={<ServerErrorPage />} />
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<Route path="*" element={<NotFoundPage />} />
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```
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## 🎨 Design System Integration
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All components use the established design tokens:
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**Colors:**
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- `background-primary/secondary` - Page backgrounds
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- `glass-bg/border` - Glassmorphism elements
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- `text-primary/secondary/muted` - Text hierarchy
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- `error/warning/info/success-*` - Semantic colors
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- `gold-*` - Accent colors
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**Spacing:**
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- `p-lg, space-y-lg` - Large spacing
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- `p-md, space-y-md` - Medium spacing
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- `p-sm, space-y-sm` - Small spacing
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**Animations:**
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- `animate-pulse` - Skeleton animations
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- `animate-spin` - Spinner rotations
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- `animate-shimmer` - Shimmer effects
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## ♿ Accessibility Features
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**Screen Reader Support:**
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- Loading announcements with `aria-live="polite"`
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- Proper `role="status"` for loading states
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- Descriptive `aria-label` attributes
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**Keyboard Navigation:**
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- Focus management in error states
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- Accessible action buttons
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- Proper heading hierarchy
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**Visual Accessibility:**
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- High contrast colors
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- Smooth animations (respects prefers-reduced-motion)
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- Clear error messaging
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## 🧪 Testing
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**Demo Component:**
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Use `ErrorBoundaryDemo` component to test all functionality:
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```tsx
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import { ErrorBoundaryDemo } from './components/ErrorBoundaryDemo';
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// Add to your routes for testing
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<Route path="/demo/errors" element={<ErrorBoundaryDemo />} />
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```
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**Features Tested:**
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- ✅ Error boundary catching
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- ✅ Loading state transitions
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- ✅ Skeleton component variants
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- ✅ Spinner animations
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- ✅ Timeout handling
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- ✅ Recovery mechanisms
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## 📋 Best Practices
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### Error Boundaries
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1. **Wrap at Multiple Levels:** Use both app-level and component-level boundaries
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2. **Error Logging:** Always integrate with error reporting service
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3. **User-Friendly Messages:** Avoid technical error details in production
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4. **Recovery Options:** Provide clear next steps for users
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### Loading States
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1. **Immediate Feedback:** Show loading UI within 100ms
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2. **Skeleton Matching:** Make skeleton shapes match final content
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3. **Timeout Handling:** Always handle slow network scenarios
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4. **Progressive Loading:** Load critical content first
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### Performance
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1. **Lazy Loading:** Use React.lazy() with RouteSuspense
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2. **Code Splitting:** Split large components and routes
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3. **Skeleton Efficiency:** Use CSS animations over JavaScript
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4. **Error Boundary Scope:** Keep boundaries focused to prevent large UI breaks
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## 🔮 Future Enhancements
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**Planned Features:**
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- [ ] Offline error handling
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- [ ] Progressive Web App integration
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- [ ] Advanced error analytics
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- [ ] Custom skeleton builder
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- [ ] Animation customization
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- [ ] Error boundary testing utilities
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**Integration Opportunities:**
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- [ ] Sentry error reporting
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- [ ] LogRocket session replay
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- [ ] Performance monitoring
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- [ ] A/B testing for error UX
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- [ ] User feedback collection
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This implementation provides a solid foundation for error handling and loading states that can evolve with your application's needs while maintaining excellent user experience.
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