How do I create a reusable design system with React and TypeScript?

Great question! Here's a structured approach to building a reusable design system: ## 1. Token Foundation Start with design tokens — these are the atomic values that define your visual language: - **Colors**: Use semantic naming (e.g., `--text-neutral-primary`, `--surface-neutral-primary`) - **Spacing**: Define a consistent scale (4px, 8px, 12px, 16px, ...) - **Typography**: Set up font families, sizes, and weights ## 2. Layout Primitives Build foundational layout components: - `Box` — polymorphic container with token-driven props - `Flex`, `Stack`, `Grid` — composition helpers - `Container` — max-width wrapper ## 3. Component Architecture

interface ButtonProps {
  variant: 'primary' | 'secondary' | 'tertiary';
  size: 'small' | 'medium' | 'large';
  children: React.ReactNode;
}

## 4. Documentation Use Storybook for interactive docs and visual testing. Each component should have: - Props documentation - Interactive playground - Usage examples This approach ensures consistency across your entire application! 🚀

That sounds amazing! Can you also review this API doc?

I reviewed the provided API documentation. Everything looks standard, but you might want to check out the official guidelines for REST conventions:

REST API Tutorial

Learn REST API concepts, architecture, and design best practices with real-world examples and interactive guides.

restfulapi.net

Can you show me how to implement the Box component with TypeScript generics?

Absolutely! Here's how to build a polymorphic Box component using TypeScript generics:

import React from 'react';

type BoxProps<C extends React.ElementType> = {
  as?: C;
  children?: React.ReactNode;
  p?: SpacingToken;
  m?: SpacingToken;
  bg?: BackgroundToken;
} & Omit<React.ComponentPropsWithoutRef<C>, 'as'>;

export const Box = <C extends React.ElementType = 'div'>({
  as,
  children,
  p,
  m,
  bg,
  ...props
}: BoxProps<C>) => {
  const Component = as || 'div';
  
  const style = {
    padding: p ? `var(--space-${p})` : undefined,
    margin: m ? `var(--space-${m})` : undefined,
    backgroundColor: bg ? `var(--surface-${bg})` : undefined,
  };

  return (
    <Component style={style} {...props}>
      {children}
    </Component>
  );
};

### Key Benefits: - **Type-safe `as` prop** — renders any HTML element or custom component - **Token-driven styles** — no magic numbers, only design tokens - **Full IntelliSense** — TypeScript infers all valid props based on the element type This pattern is used by Chakra UI, Mantine, and many enterprise design systems.