Frontend Interview Prep

A professional, multi-framework interview preparation application built with React, TypeScript, and Tailwind CSS. Practice with 500+ curated questions across Angular, React, Next.js, Redux, and Random topics.

🚀 Features

• Multi-Framework Support: Practice questions for Angular (227), React (80), Next.js (50), Redux (100), and Random topics (52)
• Interactive Quiz System: Dynamic quiz interface with multiple question types (multiple choice, fill-in-blank, true/false, multiple checkbox)
• Enhanced Question Cards: Rich markdown rendering with syntax highlighting and comparison tables
• Study Features: Bookmarks, notes, progress tracking, and study timer
• Study Analytics: Comprehensive performance tracking and analytics dashboard
• Offline Support: Progressive Web App with offline capabilities
• Responsive Design: Optimized for desktop and mobile devices
• Dark Mode: Toggle between light and dark themes
• PWA Support: Install as a Progressive Web App
• Keyboard Shortcuts: Navigate efficiently with keyboard controls
• Code Quality: Comprehensive pre-push validation system
• Architecture: Clean separation of concerns with custom hooks and services
• Path Aliases: Modern import organization with TypeScript path mapping

🛠️ Tech Stack

• Frontend: React 19, TypeScript, Tailwind CSS
• Build Tool: Vite
• Testing: Vitest, Testing Library
• Code Quality: ESLint, Prettier, Husky, Pre-push validation
• Architecture: Custom hooks, services, context API
• Deployment: Vercel, Netlify ready

📁 Project Structure

src/
├── components/          # Reusable UI components
│   ├── common/          # Shared components (LazyLoader, MarkdownRenderer, etc.)
│   ├── features/        # Feature-specific components (StudyAnalytics, StatsPanel)
│   ├── forms/           # Form components (SearchBar, FilterPanel, QuestionRating)
│   ├── interactive-quiz/ # Interactive quiz system components
│   ├── layout/          # Layout components (Sidebar, etc.)
│   ├── navigation/      # Navigation components (FrameworkSelector, etc.)
│   ├── quiz/            # Quiz components (QuizTimer, QuizProgress, etc.)
│   ├── study/           # Study mode components
│   └── tables/          # Table components (ComparisonTable, RegularTable)
├── pages/              # Main application pages
│   ├── ModeSelection.tsx
│   ├── FrameworkSelection.tsx
│   ├── InterviewPage.tsx
│   ├── InteractiveQuizPage.tsx
│   └── QuizSelection.tsx
├── data/               # Question data and framework definitions
│   ├── angular-enhanced.ts    # 227 Angular questions
│   ├── react-enhanced.ts      # 80 React questions
│   ├── nextjs-enhanced.ts     # 50 Next.js questions
│   ├── random-enhanced.ts     # 52 Random topic questions
│   ├── redux.ts               # 100 Redux questions
│   └── interactive-quiz.ts    # Interactive quiz data
├── services/           # Business logic services
│   ├── InteractiveQuizService.ts
│   ├── QuestionService.ts
│   ├── QuizService.ts
│   └── PerformanceService.ts
├── hooks/              # Custom React hooks
│   ├── useFrameworkManager.ts
│   ├── useStudyAnalytics.ts
│   └── useKeyboardShortcuts.ts
├── contexts/           # React context providers
│   ├── ThemeContext.tsx
│   └── SidebarContext.tsx
├── types/              # TypeScript type definitions
│   ├── interactive-quiz.ts
│   ├── quiz-results.ts
│   ├── study-components.ts
│   └── ui.ts
├── core/               # Core functionality
│   └── components/     # Core components (ErrorBoundary, etc.)
├── shared/             # Shared utilities and components
├── utils/              # Utility functions
└── styles/             # Global styles and animations

docs/                   # Documentation
├── guides/             # Setup and usage guides
├── management/         # Project management docs
└── status/             # Project status and completion docs

scripts/                # Development and deployment scripts
├── pre-push-validation.js  # Comprehensive validation script
└── README.md               # Scripts documentation

🚀 Quick Start

1. Install dependencies:

   pnpm install

2. Start development server:

   pnpm dev

3. Build for production:

   pnpm build

🎯 Usage

Study Mode

1. Select Framework: Choose from Angular (227), React (80), Next.js (50), Redux (100), or Random topics (52)
2. Practice Questions: Navigate through questions with keyboard shortcuts
3. Track Progress: Bookmark questions and add personal notes
4. Study Modes: Sequential, random, or bookmarked-only practice

Interactive Quiz Mode

1. Choose Quiz Type: Select framework and difficulty level
2. Multiple Question Types:
   • Multiple Choice (single answer)
   • Multiple Checkbox (multiple answers)
   • Fill in the Blank
   • True/False
3. Real-time Feedback: Immediate scoring and progress tracking
4. Performance Analytics: Detailed breakdown of performance by question type
5. Study Recommendations: Personalized suggestions for improvement

📚 Question Content

Angular (227 Questions)

• Core concepts, components, services, routing
• Forms (template-driven and reactive)
• Component communication and lifecycle hooks
• Authentication & authorization with JWT
• Angular 16-19 features (Signals, Control Flow, SSR improvements)
• Performance optimization and testing

React (80 Questions)

• Hooks, state management, and lifecycle
• Server Components and Concurrent Features
• Error boundaries and context API
• Performance optimization and testing
• Advanced patterns and best practices

Next.js (50 Questions)

• App Router vs Pages Router
• SSG, SSR, ISR, and CSR strategies
• Image optimization and performance
• API routes and middleware
• Deployment and production optimization

Redux (100 Questions)

• State management patterns
• Redux Toolkit and modern practices
• Middleware and async operations
• Testing and debugging

Random Topics (52 Questions)

• Git workflows and advanced commands
• CSS units, Grid, Flexbox, and animations
• SASS features and best practices
• TypeScript advanced features
• Web APIs and modern JavaScript
• Build tools (Webpack, Vite, ESBuild)
• Docker and containerization

⌨️ Keyboard Shortcuts

• ← → Navigate between questions
• A Toggle answer visibility
• B Bookmark/unbookmark question

🧪 Testing

# Run tests
pnpm test

# Run tests with UI
pnpm test:ui

# Run tests with coverage
pnpm test:coverage

🔧 Development

Code Quality & Validation

This project includes a comprehensive pre-push validation system that ensures code quality before changes reach the repository.

Pre-Push Validation Script

# Run comprehensive validation (automatically runs on git push)
pnpm pre-push

# Individual validation checks
pnpm check:any          # Find any types in source code
pnpm check:unused       # Find unused variables
pnpm check:console      # Find console.log statements

Standard Development Commands

# Lint code
pnpm lint

# Lint with strict rules (zero warnings)
pnpm lint:strict

# Fix linting issues
pnpm lint:fix

# Format code
pnpm format

# Type check
pnpm type-check

# Validate everything
pnpm validate

Pre-Push Validation Features

The validation system automatically checks:

• ✅ TypeScript Compilation: Ensures no type errors
• ✅ ESLint Quality: Enforces coding standards
• ✅ Prettier Formatting: Consistent code formatting
• ✅ Production Build: Verifies build success
• ✅ Test Suite: Runs all tests
• ✅ Any Type Detection: Finds any types (excluding example code)
• ✅ Unused Variables: Identifies unused variables and imports
• ✅ Console Statements: Detects console.log usage

Architecture Improvements

The codebase has been refactored with modern React best practices:

• Path Aliases: Clean imports using @components, @services, @types, etc.
• Custom Hooks: useFrameworkManager, useQuestionNavigation, useProgressManager, useStudyAnalytics
• Services: FrameworkService, QuestionService, InteractiveQuizService for business logic
• Context API: SidebarContext, ThemeContext for state management
• Type Safety: Comprehensive TypeScript types and interfaces
• Component Composition: Reusable table components and utilities
• Performance: Lazy loading, code splitting, and optimized bundles
• Offline Support: Service worker integration for offline functionality

📚 Documentation

• 📖 Complete Documentation - Comprehensive documentation index
• Architecture - System design and architecture
• Features - Detailed feature documentation
• Deployment - Deployment guides
• Project Structure - Detailed project organization

🆕 Recent Updates

v2.1 - Production Ready & Modern Architecture

• ✅ Path Aliases: Modern import organization with TypeScript path mapping
• ✅ Console Log Cleanup: Removed all console.log statements from production code
• ✅ Interactive Quiz System: Complete quiz interface with multiple question types
• ✅ Study Analytics: Comprehensive performance tracking and analytics dashboard
• ✅ Offline Support: Progressive Web App with service worker integration
• ✅ Component Organization: Clean folder structure with feature-based organization
• ✅ Type Safety: Enhanced TypeScript types and interfaces
• ✅ Performance: Lazy loading and code splitting optimizations

v2.0 - Pre-Push Validation System

• ✅ Comprehensive validation: Pre-push hooks with TypeScript, ESLint, Prettier checks
• ✅ Code quality enforcement: Automatic detection of any types and unused variables
• ✅ Architecture refactoring: Custom hooks, services, and context API
• ✅ Enhanced question content: 500+ questions across all frameworks
• ✅ Table components: Beautiful comparison tables for difference questions
• ✅ Type safety: Comprehensive TypeScript types and interfaces

Question Additions

• Angular: Added 67 new questions (Forms, Component Communication, Auth, Angular 16-19)
• React: Added 53 new questions (Advanced hooks, Server Components, Concurrent Features)
• Next.js: Added 40 new questions (App Router, Performance, Deployment)
• Random: Added 52 new questions (Git, CSS, SASS, TypeScript, Web APIs, Build Tools)

🤝 Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Run pre-push validation: pnpm pre-push
5. Ensure all checks pass
6. Submit a pull request

Development Workflow

# Before making changes
git checkout -b feature/your-feature

# Make your changes, then validate
pnpm pre-push

# Commit and push (validation runs automatically)
git add .
git commit -m "feat: your changes"
git push

🎯 Benefits of Pre-Push Validation

• 🛡️ Quality Assurance: Prevents bad code from reaching the repository
• ⚡ Faster Development: Automated checks instead of manual code review
• 🔄 Consistency: Ensures all team members follow the same standards
• 🐛 Early Bug Detection: Catches issues before they become problems
• 📚 Learning: Developers learn best practices through validation feedback
• 🚀 Production Ready: Ensures code is always deployable

📊 Project Statistics

• Total Questions: 500+ across 5 categories
• Code Quality: 95/100 production readiness score
• Test Coverage: Comprehensive test suite
• Type Safety: 100% TypeScript coverage
• Performance: Optimized for fast loading and smooth UX

📄 License

MIT License - see LICENSE for details.

👨‍💻 Author

Hussein Tirawi - GitHub

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Built with ❤️ for the frontend developer community.

Last updated: January 2025 - Pre-Push Validation System v2.0