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Frontend Development Standards

Tech Stack

Our frontend stack is built on modern technologies focusing on performance, maintainability, and developer experience.

Core Technologies​

Framework & Libraries​

Development Tools​

  • ESLint + Prettier
  • Husky for Git hooks
  • Jest + React Testing Library
  • Storybook
  • Webpack/Vite

Project Structure​

Directory Organization​

src/
├── components/
│   ├── common/
│   ├── features/
│   └── layouts/
├── hooks/
│   ├── api/
│   └── common/
├── pages/
├── store/
├── styles/
└── utils/

Component Architecture​

Component Types​

  1. Presentational Components
interface ButtonProps {
  variant: 'primary' | 'secondary';
  size: 'sm' | 'md' | 'lg';
  children: React.ReactNode;
  onClick?: () => void;
}

const Button: React.FC<ButtonProps> = ({
  variant,
  size,
  children,
  onClick
}) => {
  return (
    <button
      className={`btn-${variant} btn-${size}`}
      onClick={onClick}
    >
      {children}
    </button>
  );
};
  1. Container Components
const UserList: React.FC = () => {
  const { data, isLoading } = useQuery('users', fetchUsers);

  if (isLoading) return <Spinner />;

  return (
    <div>
      {data.map(user => (
        <UserCard key={user.id} user={user} />
      ))}
    </div>
  );
};

State Management​

State Categories
  • Local Component State: useState
  • Server State: React Query
  • Global App State: Redux Toolkit
  • URL State: Next.js Router

Performance Optimization​

Best Practices​

Monitoring​

  • Lighthouse scores
  • Core Web Vitals
  • Bundle size analysis
  • Performance monitoring

Testing Strategy​

Unit Tests​

describe('Button', () => {
  it('renders with correct variant', () => {
    render(<Button variant="primary">Click me</Button>);
    expect(screen.getByRole('button')).toHaveClass('btn-primary');
  });
});

Integration Tests​

  • Page load scenarios
  • User flows
  • API integration
  • Error states

Accessibility (A11y)​

Requirements​

  • WCAG 2.1 AA compliance
  • Keyboard navigation
  • Screen reader support
  • Color contrast

Implementation​

// Good example
const Button = ({ label, onClick }) => (
  <button
    onClick={onClick}
    aria-label={label}
    role="button"
  >
    {label}
  </button>
);

CSS & Styling​

Tailwind Best Practices​

  • Custom theme configuration
  • Component-specific styles
  • Responsive design
  • Dark mode support

Design System Integration​

See our Design System for detailed guidelines.

Security​

Frontend Security Checklist​

  • XSS Prevention
  • CSRF Protection
  • Secure Authentication
  • Input Validation
  • Dependency Scanning

Build & Deployment​

CI/CD Pipeline​

  1. Lint & Type Check
  2. Unit Tests
  3. Build
  4. E2E Tests
  5. Deploy

Environment Configuration​

// next.config.js
module.exports = {
  env: {
    API_URL: process.env.API_URL,
    FEATURE_FLAGS: process.env.FEATURE_FLAGS,
  },
};
Living Document

This document is regularly updated to reflect our evolving frontend practices and standards.