Frontend Architecture Standards

This document outlines the standards and best practices for frontend architecture across all Bayat projects. Following these guidelines ensures consistency, maintainability, and scalability of frontend applications.

Core Principles
Application Architecture
State Management
Component Design
Code Organization
Performance Optimization
Testing Strategy
Build and Bundling
Styling Architecture
Routing Standards
API Integration
Security Practices
Accessibility Standards
Internationalization
Error Handling
Monitoring and Analytics
Documentation

Core Principles

All frontend architectures at Bayat should adhere to these core principles:

Component-Based: Design systems as composable, reusable components
Single Responsibility: Each component should do one thing well
Separation of Concerns: Separate business logic, presentation, and state management
Unidirectional Data Flow: Data flows in one direction for predictability
Performance First: Optimize for fast initial load and interaction
Accessibility by Default: Ensure applications are usable by everyone
Responsive Design: Applications work across all device sizes
Testable Code: Architecture supports comprehensive testing
Maintainable: Code is organized for long-term maintenance
Framework Agnostic Core: Core business logic should be framework-agnostic where possible

Application Architecture

Approved Architecture Patterns

Choose the appropriate architecture pattern based on project requirements:

Pattern	Best For	Key Characteristics
Component-Based	Most applications	Composable, reusable components
Atomic Design	Design system implementations	Hierarchy of components (atoms, molecules, organisms, etc.)
Micro-Frontend	Large applications with multiple teams	Independent frontend applications composed together
JAMstack	Content-heavy applications	JavaScript, APIs, and Markup architecture
Server-Side Rendering	SEO-critical applications	Render initial HTML on the server
Static Site Generation	Content sites with infrequent updates	Pre-render pages at build time

Reference Architecture

Standard layered architecture for frontend applications:

├── UI Layer (Components)
│   ├── Pages/Screens
│   ├── Layouts
│   ├── UI Components
│   └── Design System
├── Application Layer
│   ├── State Management
│   ├── Routing
│   ├── Forms
│   └── Services
├── Domain Layer
│   ├── Business Logic
│   ├── Models/Entities
│   └── Validation
└── Infrastructure Layer
    ├── API Clients
    ├── Storage
    ├── Authentication
    └── Analytics

Technology Selection

Approved frontend technologies:

Category	Approved Technologies	Notes
Frameworks	React, Angular, Vue.js	React preferred for new projects
State Management	Redux, MobX, Zustand, React Context	Choose based on complexity
CSS Approaches	CSS Modules, Styled Components, Tailwind CSS	Tailwind preferred for new projects
Build Tools	Webpack, Vite, Next.js	Vite preferred for new projects
Testing	Jest, React Testing Library, Cypress	Combination recommended

State Management

State Categories

Organize application state into these categories:

UI State: Temporary visual states (e.g., open/closed, loading, validation)
Application State: Session-level state (e.g., current user, theme preferences)
Domain State: Business data (e.g., products, orders, users)
Server Cache: Local cache of server data (e.g., API responses)

State Management Patterns

Choose the appropriate state management pattern based on complexity:

State Type	Simple Applications	Medium Complexity	High Complexity
UI State	Component State	Context API	Redux Toolkit
Application State	Context API	Context + Hooks	Redux Toolkit
Domain State	Context API	React Query/SWR	Redux Toolkit + Middleware
Server Cache	Fetch + useEffect	React Query/SWR	Redux Toolkit Query

State Management Best Practices

Minimize State: Store only necessary data in state
Single Source of Truth: Avoid duplicating state
Immutability: Never directly mutate state
Normalize Complex Data: Flatten nested data structures
Colocation: Keep state close to where it's used
Persistence: Use local storage for persistent state
Hydration: Restore state on page reload when needed

Component Design

Component Hierarchy

Organize components in a clear hierarchy:

Page Components: Represent entire pages/routes
Container Components: Manage data and state
Feature Components: Implement specific features
UI Components: Reusable UI elements
Design System Components: Primitive UI components

Component Guidelines

Props Interface: Define clear prop interfaces for all components
Prop Validation: Validate all component props
Default Props: Provide sensible defaults
Composition: Favor composition over inheritance
Pure Components: Make components pure where possible
Memoization: Use memoization for expensive calculations
Error Boundaries: Implement error boundaries for fault isolation

Component Example (React)

// Button.tsx
import React, { memo } from 'react';
import classNames from 'classnames';
import './Button.css';

export type ButtonVariant = 'primary' | 'secondary' | 'tertiary';
export type ButtonSize = 'small' | 'medium' | 'large';

export interface ButtonProps {
  /** Button label content */
  children: React.ReactNode;
  /** Visual variant of the button */
  variant?: ButtonVariant;
  /** Size of the button */
  size?: ButtonSize;
  /** Disabled state */
  disabled?: boolean;
  /** Click handler */
  onClick?: (event: React.MouseEvent<HTMLButtonElement>) => void;
  /** Additional class names */
  className?: string;
  /** Button type attribute */
  type?: 'button' | 'submit' | 'reset';
}

/**
 * Primary button component for user interaction
 */
const Button = ({
  children,
  variant = 'primary',
  size = 'medium',
  disabled = false,
  onClick,
  className,
  type = 'button',
  ...rest
}: ButtonProps) => {
  return (
    <button
      type={type}
      className={classNames(
        'btn',
        `btn--${variant}`,
        `btn--${size}`,
        { 'btn--disabled': disabled },
        className
      )}
      disabled={disabled}
      onClick={onClick}
      {...rest}
    >
      {children}
    </button>
  );
};

// Use memo for performance optimization
export default memo(Button);

Code Organization

Project Structure

Follow this standard project structure:

src/
├── assets/              # Static assets
├── components/          # Shared components
│   ├── ui/              # UI components
│   └── features/        # Feature components
├── config/              # Application configuration
├── hooks/               # Custom hooks
├── layouts/             # Page layouts
├── pages/               # Page components
├── services/            # External service integrations
├── store/               # State management
├── styles/              # Global styles
├── types/               # TypeScript type definitions
├── utils/               # Utility functions
├── App.tsx              # Application root
└── main.tsx             # Entry point

Feature-Based Organization

For larger applications, consider a feature-based structure:

src/
├── common/             # Shared code
│   ├── components/     # Shared components
│   ├── hooks/          # Shared hooks
│   └── utils/          # Shared utilities
├── features/           # Feature modules
│   ├── auth/           # Authentication feature
│   │   ├── components/ # Feature-specific components
│   │   ├── hooks/      # Feature-specific hooks
│   │   ├── services/   # Feature-specific services
│   │   ├── store/      # Feature-specific state
│   │   └── index.ts    # Feature entry point
│   ├── products/       # Products feature
│   └── checkout/       # Checkout feature
├── layouts/            # Application layouts
├── pages/              # Route pages
├── store/              # Root store configuration
├── App.tsx             # Application root
└── main.tsx            # Entry point

Naming Conventions

Use consistent naming conventions:

Files: PascalCase for components, camelCase for utilities
Components: PascalCase (e.g., Button.tsx)
Hooks: camelCase with use prefix (e.g., useAuth.ts)
Context: PascalCase with Context suffix (e.g., AuthContext.tsx)
Constants: UPPER_SNAKE_CASE
Types/Interfaces: PascalCase with descriptive names
CSS Modules: Same name as component with .module.css extension

Performance Optimization

Performance Metrics

Track these key performance metrics:

First Contentful Paint (FCP): Under 1.8s
Largest Contentful Paint (LCP): Under 2.5s
First Input Delay (FID): Under 100ms
Cumulative Layout Shift (CLS): Under 0.1
Time to Interactive (TTI): Under 3.8s
Total Blocking Time (TBT): Under 200ms

Performance Optimization Techniques

Implement these optimization strategies:

Code Splitting: Split code by routes and large components
Lazy Loading: Defer loading of non-critical resources
Tree Shaking: Eliminate unused code
Bundle Analysis: Regularly analyze bundle size
Resource Optimization: Optimize images and assets
Caching Strategy: Implement effective caching
Critical CSS: Inline critical CSS
Web Vitals Monitoring: Monitor core web vitals

Example Code Splitting (React)

import React, { lazy, Suspense } from 'react';
import { Routes, Route } from 'react-router-dom';
import Loading from './components/Loading';

// Lazy load route components
const Home = lazy(() => import('./pages/Home'));
const Products = lazy(() => import('./pages/Products'));
const ProductDetail = lazy(() => import('./pages/ProductDetail'));
const Checkout = lazy(() => import('./pages/Checkout'));

const App = () => {
  return (
    <Suspense fallback={<Loading />}>
      <Routes>
        <Route path="/" element={<Home />} />
        <Route path="/products" element={<Products />} />
        <Route path="/products/:id" element={<ProductDetail />} />
        <Route path="/checkout" element={<Checkout />} />
      </Routes>
    </Suspense>
  );
};

Testing Strategy

Testing Levels

Implement comprehensive testing across these levels:

Unit Tests: Test individual components and functions
Integration Tests: Test interactions between components
Component Tests: Test component rendering and behavior
End-to-End Tests: Test complete user flows
Visual Regression Tests: Test UI appearance
Performance Tests: Test loading and runtime performance
Accessibility Tests: Test for accessibility compliance

Testing Coverage Standards

Maintain these minimum test coverage levels:

Core Components: 90% statement coverage
Business Logic: 90% statement coverage
Utility Functions: 95% statement coverage
UI Components: Key interactions and states tested
Critical User Flows: 100% end-to-end test coverage

Testing Examples

Unit test example (Jest + React Testing Library):

// Button.test.tsx
import React from 'react';
import { render, screen, fireEvent } from '@testing-library/react';
import Button from './Button';

describe('Button component', () => {
  test('renders with default props', () => {
    render(<Button>Click me</Button>);
    const button = screen.getByRole('button', { name: /click me/i });
    
    expect(button).toBeInTheDocument();
    expect(button).toHaveClass('btn btn--primary btn--medium');
    expect(button).not.toBeDisabled();
  });
  
  test('applies variant and size classes', () => {
    render(<Button variant="secondary" size="large">Submit</Button>);
    const button = screen.getByRole('button', { name: /submit/i });
    
    expect(button).toHaveClass('btn btn--secondary btn--large');
  });
  
  test('handles click events', () => {
    const handleClick = jest.fn();
    render(<Button onClick={handleClick}>Click me</Button>);
    
    fireEvent.click(screen.getByRole('button', { name: /click me/i }));
    expect(handleClick).toHaveBeenCalledTimes(1);
  });
  
  test('disables the button when disabled prop is true', () => {
    render(<Button disabled>Disabled</Button>);
    const button = screen.getByRole('button', { name: /disabled/i });
    
    expect(button).toBeDisabled();
    expect(button).toHaveClass('btn--disabled');
  });
});

Build and Bundling

Build Tools

Standardize on these build tools:

Vite: For new React/Vue projects
Next.js: For React applications requiring SSR/SSG
Angular CLI: For Angular applications
Webpack: For complex custom configurations

Build Configuration

Implement these build optimizations:

Environment-Specific Builds: Configure for dev, staging, production
Minification: Minify JavaScript, CSS, and HTML
Source Maps: Generate source maps for debugging
Asset Optimization: Optimize and compress assets
Chunking Strategy: Optimize chunk sizes and loading
Cache Busting: Implement filename hashing
Build Analysis: Analyze build output regularly

Example Vite Configuration

// vite.config.js
import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import { visualizer } from 'rollup-plugin-visualizer';
import { VitePWA } from 'vite-plugin-pwa';

export default defineConfig({
  plugins: [
    react(),
    VitePWA({
      registerType: 'autoUpdate',
      includeAssets: ['favicon.ico', 'robots.txt', 'apple-touch-icon.png'],
      manifest: {
        name: 'Bayat Application',
        short_name: 'BayatApp',
        theme_color: '#ffffff',
        icons: [
          // Icons configuration
        ]
      }
    }),
    visualizer({
      open: false,
      gzipSize: true,
      brotliSize: true,
    })
  ],
  build: {
    target: 'es2015',
    outDir: 'dist',
    assetsDir: 'assets',
    cssCodeSplit: true,
    reportCompressedSize: true,
    rollupOptions: {
      output: {
        manualChunks: {
          vendor: ['react', 'react-dom', 'react-router-dom'],
          // Additional chunk definitions
        },
      },
    },
  },
  resolve: {
    alias: {
      '@': '/src',
    },
  },
});

Styling Architecture

CSS Methodologies

Choose the appropriate CSS methodology based on project needs:

Methodology	Best For	Key Benefits
CSS Modules	Component-based apps	Local scope, composition
Styled Components	React applications	Dynamic styling, theme support
Tailwind CSS	Rapid development	Utility-first, consistency
SCSS with BEM	Large applications	Structure, readability

Design System Integration

Implement a consistent design system:

Design Tokens: Use design tokens for colors, spacing, typography
Component Library: Build on a shared component library
Theme Support: Implement light/dark and brand theming
Responsive Design: Use a consistent approach to responsiveness
Documentation: Maintain living documentation of the design system

Example Tailwind Configuration

// tailwind.config.js
const colors = require('tailwindcss/colors');

module.exports = {
  content: ['./index.html', './src/**/*.{js,ts,jsx,tsx}'],
  theme: {
    extend: {
      colors: {
        primary: {
          50: '#f0f9ff',
          100: '#e0f2fe',
          // ... other shades
          900: '#0c4a6e',
        },
        secondary: {
          // Secondary color palette
        },
        // Other brand colors
      },
      fontFamily: {
        sans: ['Inter var', 'sans-serif'],
        display: ['Lexend', 'sans-serif'],
      },
      spacing: {
        // Custom spacing values
      },
      borderRadius: {
        // Custom border radius values
      },
      // Other theme extensions
    },
  },
  plugins: [
    require('@tailwindcss/forms'),
    require('@tailwindcss/typography'),
    require('@tailwindcss/aspect-ratio'),
  ],
};

Routing Standards

Routing Patterns

Implement consistent routing patterns:

Declarative Routes: Define routes declaratively
Nested Routes: Use nested routes for related content
Route Parameters: Use consistent parameter patterns
Query Parameters: Use for filtering and sorting
Route Guards: Implement authentication and authorization checks
Code Splitting: Split code by route
Route Transitions: Add smooth transitions between routes

URL Structure

Follow these URL structure guidelines:

Use kebab-case for URL paths
Use descriptive, resource-focused paths
Follow RESTful patterns where appropriate
Keep URLs reasonably short but descriptive
Include language in URL for multilingual sites
Use query parameters for filtering, not URL paths

Examples:

/products                      # Product listing
/products/category/electronics # Category filtering
/products/123-smartphone-x     # Product detail with slug
/users/profile                 # User profile
/checkout/shipping             # Multi-step process

Example React Router Configuration

// routes.tsx
import { createBrowserRouter, RouterProvider } from 'react-router-dom';
import { lazy, Suspense } from 'react';
import MainLayout from './layouts/MainLayout';
import LoadingPage from './components/LoadingPage';
import ErrorBoundary from './components/ErrorBoundary';
import ProtectedRoute from './components/ProtectedRoute';

// Lazy-loaded route components
const Home = lazy(() => import('./pages/Home'));
const ProductList = lazy(() => import('./pages/ProductList'));
const ProductDetail = lazy(() => import('./pages/ProductDetail'));
const UserProfile = lazy(() => import('./pages/UserProfile'));
const Checkout = lazy(() => import('./pages/Checkout'));
const NotFound = lazy(() => import('./pages/NotFound'));

const router = createBrowserRouter([
  {
    path: '/',
    element: <MainLayout />,
    errorElement: <ErrorBoundary />,
    children: [
      { index: true, element: <Home /> },
      { 
        path: 'products',
        children: [
          { index: true, element: <ProductList /> },
          { path: ':productId', element: <ProductDetail /> }
        ]
      },
      { 
        path: 'profile',
        element: (
          <ProtectedRoute>
            <UserProfile />
          </ProtectedRoute>
        )
      },
      { 
        path: 'checkout',
        element: (
          <ProtectedRoute>
            <Checkout />
          </ProtectedRoute>
        )
      },
      { path: '*', element: <NotFound /> }
    ]
  }
]);

const Routes = () => (
  <Suspense fallback={<LoadingPage />}>
    <RouterProvider router={router} />
  </Suspense>
);

export default Routes;

API Integration

API Client Architecture

Implement a structured API client:

Base Client: Create a configurable base API client
Service Modules: Organize by domain/resource
Request/Response Types: Define strong types
Error Handling: Implement consistent error handling
Caching Strategy: Define caching behavior
Authentication: Handle auth tokens and refreshing
Interceptors: Implement request/response interceptors
Retry Logic: Add intelligent retry for failed requests

API Client Example

// api/client.ts
import axios, { AxiosInstance, AxiosRequestConfig, AxiosResponse, AxiosError } from 'axios';
import { getAuthToken, refreshToken } from '../auth/authService';

export class ApiClient {
  private client: AxiosInstance;
  private baseURL: string;
  
  constructor(baseURL: string) {
    this.baseURL = baseURL;
    this.client = axios.create({
      baseURL,
      timeout: 10000,
      headers: {
        'Content-Type': 'application/json',
      },
    });
    
    this.setupInterceptors();
  }
  
  private setupInterceptors(): void {
    // Request interceptor
    this.client.interceptors.request.use(
      (config) => {
        const token = getAuthToken();
        if (token) {
          config.headers.Authorization = `Bearer ${token}`;
        }
        return config;
      },
      (error) => Promise.reject(error)
    );
    
    // Response interceptor
    this.client.interceptors.response.use(
      (response) => response,
      async (error: AxiosError) => {
        const originalRequest = error.config;
        
        // Handle token refresh
        if (error.response?.status === 401 && !originalRequest.headers['X-Retry']) {
          originalRequest.headers['X-Retry'] = 'true';
          
          try {
            await refreshToken();
            return this.client(originalRequest);
          } catch (refreshError) {
            // Handle auth refresh failure
            return Promise.reject(refreshError);
          }
        }
        
        return Promise.reject(error);
      }
    );
  }
  
  // Generic request method
  public async request<T>(config: AxiosRequestConfig): Promise<T> {
    try {
      const response: AxiosResponse<T> = await this.client(config);
      return response.data;
    } catch (error) {
      this.handleError(error as AxiosError);
      throw error;
    }
  }
  
  // Convenience methods
  public async get<T>(url: string, config?: AxiosRequestConfig): Promise<T> {
    return this.request<T>({ ...config, method: 'GET', url });
  }
  
  public async post<T>(url: string, data?: any, config?: AxiosRequestConfig): Promise<T> {
    return this.request<T>({ ...config, method: 'POST', url, data });
  }
  
  public async put<T>(url: string, data?: any, config?: AxiosRequestConfig): Promise<T> {
    return this.request<T>({ ...config, method: 'PUT', url, data });
  }
  
  public async delete<T>(url: string, config?: AxiosRequestConfig): Promise<T> {
    return this.request<T>({ ...config, method: 'DELETE', url });
  }
  
  private handleError(error: AxiosError): void {
    // Centralized error handling
    if (error.response) {
      // Server responded with non-2xx status
      console.error('API Error:', error.response.status, error.response.data);
    } else if (error.request) {
      // Request was made but no response received
      console.error('Network Error:', error.message);
    } else {
      // Error in setting up the request
      console.error('Request Error:', error.message);
    }
  }
}

// Create API instances
export const mainApi = new ApiClient(import.meta.env.VITE_API_URL);

Data Fetching Patterns

Use these data fetching patterns:

Custom Hooks: Encapsulate API calls in custom hooks
SWR/React Query: Use data fetching libraries for caching
Server State vs. UI State: Separate API data from UI state
Optimistic Updates: Update UI before API responses
Error Boundaries: Handle API errors gracefully
Loading States: Show appropriate loading indicators

Security Practices

Frontend Security Checklist

Implement these security measures:

XSS Prevention: Sanitize data and use frameworks' protections
CSRF Protection: Implement CSRF tokens
Content Security Policy: Configure strict CSP
Secure Authentication: Use secure auth practices
HTTPS Only: Enforce HTTPS for all communication
Sensitive Data: Don't store sensitive data in localStorage/sessionStorage
Input Validation: Validate all user inputs
Dependency Security: Regularly audit and update dependencies
Feature Policy: Use feature policy headers
Subresource Integrity: Verify third-party resources

Authentication Best Practices

Token Storage: Store tokens securely (HttpOnly cookies preferred)
Token Rotation: Implement token rotation
Session Timeout: Implement automatic session timeouts
Logout Functionality: Properly clear authentication state
Auth State Management: Centralize auth state management
Multi-factor Authentication: Support 2FA where appropriate

Accessibility Standards

WCAG Compliance

Ensure compliance with WCAG 2.1 AA standards:

Perceivable: Information must be presentable to users in ways they can perceive
Operable: User interface components must be operable
Understandable: Information and operation must be understandable
Robust: Content must be robust enough to be interpreted by a wide variety of user agents

Accessibility Requirements

Implement these accessibility features:

Semantic HTML: Use proper HTML elements
ARIA Attributes: Use ARIA when HTML semantics are insufficient
Keyboard Navigation: Ensure full keyboard operability
Focus Management: Implement proper focus management
Color Contrast: Maintain sufficient color contrast
Screen Reader Support: Test with screen readers
Alternative Text: Provide alt text for images
Form Labels: Associate labels with form elements
Error Identification: Clearly identify form errors

Accessibility Testing

Test accessibility using:

Automated Tools: Lighthouse, axe, Wave
Manual Testing: Keyboard navigation, screen readers
Contrast Checkers: WCAG contrast checkers
Accessibility Review: Regular expert review

Internationalization

I18n Implementation

Implement comprehensive internationalization:

Translation System: Use a robust translation system
Message Format: Support pluralization and formatting
RTL Support: Support right-to-left languages
Date/Time Format: Format dates and times by locale
Number Format: Format numbers by locale
Content Expansion: Allow for text expansion in translations
Dynamic Content: Support translating dynamic content

Example React-i18next Configuration

// i18n.ts
import i18n from 'i18next';
import { initReactI18next } from 'react-i18next';
import LanguageDetector from 'i18next-browser-languagedetector';
import Backend from 'i18next-http-backend';

i18n
  .use(Backend)
  .use(LanguageDetector)
  .use(initReactI18next)
  .init({
    fallbackLng: 'en',
    supportedLngs: ['en', 'fr', 'es', 'de', 'ar'],
    ns: ['common', 'auth', 'products', 'checkout'],
    defaultNS: 'common',
    interpolation: {
      escapeValue: false, // React already escapes values
    },
    backend: {
      loadPath: '/locales/{{lng}}/{{ns}}.json',
    },
    detection: {
      order: ['querystring', 'cookie', 'localStorage', 'navigator'],
      lookupQuerystring: 'lang',
      lookupCookie: 'i18next',
      lookupLocalStorage: 'i18nextLng',
      caches: ['localStorage', 'cookie'],
    },
    react: {
      useSuspense: true,
    },
  });

export default i18n;

Error Handling

Error Handling Strategy

Implement a comprehensive error handling strategy:

Global Error Boundary: Catch uncaught errors
API Error Handling: Standardize API error processing
User Feedback: Provide clear error messages to users
Error Logging: Log errors for debugging
Retry Mechanism: Implement retries for transient failures
Graceful Degradation: Maintain functionality when parts fail
Error Recovery: Provide pathways to recover from errors

Example Error Boundary

// ErrorBoundary.tsx
import React, { Component, ErrorInfo, ReactNode } from 'react';
import { logError } from '../services/errorLoggingService';
import ErrorFallback from './ErrorFallback';

interface Props {
  children: ReactNode;
  fallback?: ReactNode;
}

interface State {
  hasError: boolean;
  error: Error | null;
}

class ErrorBoundary extends Component<Props, State> {
  constructor(props: Props) {
    super(props);
    this.state = {
      hasError: false,
      error: null,
    };
  }

  static getDerivedStateFromError(error: Error): State {
    return { hasError: true, error };
  }

  componentDidCatch(error: Error, errorInfo: ErrorInfo): void {
    // Log error to service
    logError(error, errorInfo);
  }

  render(): ReactNode {
    if (this.state.hasError) {
      if (this.props.fallback) {
        return this.props.fallback;
      }
      return <ErrorFallback error={this.state.error} />;
    }

    return this.props.children;
  }
}

export default ErrorBoundary;

Monitoring and Analytics

Frontend Monitoring

Implement comprehensive frontend monitoring:

Error Tracking: Capture and report frontend errors
Performance Monitoring: Track page load and interaction metrics
User Behavior: Analyze user flows and interactions
Session Recording: Record user sessions for debugging
Feature Usage: Track feature adoption and usage
Console Logs: Forward console errors to monitoring system

Analytics Implementation

Standardize analytics implementation:

Event Tracking: Define a consistent event taxonomy
User Identification: Identify users across sessions
Conversion Tracking: Track key conversion steps
Custom Dimensions: Define business-specific dimensions
Data Layer: Implement a structured data layer
Privacy Compliance: Ensure GDPR/CCPA compliance

Example Error Monitoring Setup

// monitoring.ts
import * as Sentry from '@sentry/react';
import { BrowserTracing } from '@sentry/tracing';
import { ErrorBoundary } from '@sentry/react';

export const initMonitoring = () => {
  if (import.meta.env.PROD) {
    Sentry.init({
      dsn: import.meta.env.VITE_SENTRY_DSN,
      integrations: [new BrowserTracing()],
      tracesSampleRate: 0.2,
      environment: import.meta.env.MODE,
      release: `${import.meta.env.VITE_APP_NAME}@${import.meta.env.VITE_APP_VERSION}`,
      beforeSend(event) {
        // Clean sensitive data if needed
        return event;
      },
    });
  }
};

export { ErrorBoundary as SentryErrorBoundary };

// Custom analytics hooks
export const useAnalytics = () => {
  const trackEvent = (category: string, action: string, label?: string, value?: number) => {
    // Implementation with your analytics provider
    if (window.gtag) {
      window.gtag('event', action, {
        event_category: category,
        event_label: label,
        value: value,
      });
    }
  };
  
  return { trackEvent };
};

Documentation

Documentation Types

Maintain these documentation types:

Architecture Overview: High-level architecture documentation
Component Documentation: Component API and usage
Style Guide: Visual style guide and design system
State Management: State structure and management patterns
API Integration: API endpoints and data models
Coding Standards: Frontend coding standards and patterns

Documentation Tools

Use these tools for documentation:

Storybook: Component documentation and testing
JSDoc/TSDoc: Code-level documentation
Markdown: General documentation
Diagrams: Architecture and flow diagrams
README Files: Project and directory documentation

Example Storybook Setup

// Button.stories.tsx
import type { Meta, StoryObj } from '@storybook/react';
import Button from './Button';

const meta: Meta<typeof Button> = {
  title: 'UI/Button',
  component: Button,
  tags: ['autodocs'],
  argTypes: {
    variant: { 
      control: { type: 'select' }, 
      options: ['primary', 'secondary', 'tertiary'] 
    },
    size: { 
      control: { type: 'select' }, 
      options: ['small', 'medium', 'large'] 
    },
    disabled: { control: 'boolean' },
    onClick: { action: 'clicked' },
  },
};

export default meta;
type Story = StoryObj<typeof Button>;

export const Primary: Story = {
  args: {
    variant: 'primary',
    children: 'Primary Button',
    size: 'medium',
  },
};

export const Secondary: Story = {
  args: {
    variant: 'secondary',
    children: 'Secondary Button',
    size: 'medium',
  },
};

export const Small: Story = {
  args: {
    size: 'small',
    children: 'Small Button',
  },
};

export const Large: Story = {
  args: {
    size: 'large',
    children: 'Large Button',
  },
};

export const Disabled: Story = {
  args: {
    disabled: true,
    children: 'Disabled Button',
  },
};

Files

frontend.md

Latest commit

History