Introduction
A design system without documentation is just components nobody uses correctly. Documentation is the interface between your team and every consumer. Good docs reduce support questions, speed up onboarding, and increase adoption.
Design system docs go beyond API references — usage guidelines, composition patterns, accessibility notes, and do/don't examples. The best docs teach through examples.
This guide covers documentation architecture, tooling, and content strategies that make your system self-service.
Key Concepts
Documentation Structure
plain
docs/
├── getting-started/
│ ├── installation.mdx
│ └── quick-start.mdx
├── foundations/
│ ├── colors.mdx
│ ├── typography.mdx
│ └── spacing.mdx
├── components/
│ ├── button.mdx
│ ├── input.mdx
│ └── dialog.mdx
├── patterns/
│ ├── forms.mdx
│ └── navigation.mdx
└── guides/
├── accessibility.mdx
└── contributing.mdx
Component Doc Template
markdown
## Button
Triggers an action or event.
### Usage
```tsx
<Button variant="primary">Save changes</Button>
Props
| Prop | Type | Default |
|---|---|---|
| variant | 'primary' | 'secondary' |
| size | 'sm' | 'md' |
| isLoading | boolean | false |
Accessibility
- Uses native <button> element
- Supports Enter and Space keyboard activation
- Loading state uses aria-busy
---
## Practical Examples
### 1. Storybook Stories as Docs
```typescript
import type { Meta, StoryObj } from '@storybook/react';
import { Button } from './Button';
const meta: Meta<typeof Button> = {
title: 'Components/Button',
component: Button,
argTypes: {
variant: { control: 'select', options: ['primary', 'secondary', 'ghost'] },
size: { control: 'select', options: ['sm', 'md', 'lg'] },
isLoading: { control: 'boolean' },
},
};
export default meta;
export const Playground: StoryObj<typeof Button> = {
args: { children: 'Button', variant: 'primary', size: 'md' },
};
2. Do/Don't Guidelines
markdown
## Do / Don't
### ✅ Do: One primary button per section
A single primary button makes the main action clear.
### ❌ Don't: Multiple primary buttons
They compete for attention and confuse users.
### ✅ Do: Descriptive labels — "Save changes"
### ❌ Don't: Vague labels — "Click here" or "Submit"
3. Live Code Editor
typescript
import { LiveProvider, LiveEditor, LivePreview } from 'react-live';
<LiveProvider code={`<Button variant="primary">Hello</Button>`} scope={{ Button }}>
<LivePreview />
<LiveEditor />
</LiveProvider>
Best Practices
- ✅ Show the component first, explain second — developers scan, they don't read
- ✅ Include copy-pasteable code snippets for every variant
- ✅ Document accessibility requirements per component
- ✅ Add do/don't visual examples to prevent misuse
- ✅ Keep docs in the same repo as components — they stay in sync
- ❌ Don't write docs after the fact — document as you build
- ❌ Don't rely on auto-generated API docs alone — they lack context
Common Pitfalls
- Documentation always out of date — automate with Storybook or co-located MDX
- Missing composition examples — developers need patterns, not just individual components
- No search functionality — findability becomes critical as docs grow
- Treating docs as optional — undocumented components are unused components
Related Guides
- Storybook Setup Guide — Primary documentation platform
- Building Component Libraries — The components you're documenting
- Design System Governance — Who maintains documentation
- Design Handoff Best Practices — Documentation as handoff artifact