Storybook

Overview

Storybook is a UI component workshop for developing, documenting, and testing components in isolation. It supports React, Vue, Svelte, and Angular with Component Story Format (CSF), interactive controls, accessibility auditing, and visual regression testing through Chromatic integration.

Instructions

• When writing stories, use Component Story Format (CSF) with a default export for component metadata and named exports for each variant (Primary, Secondary, Loading, Error, Disabled).
• When making stories interactive, use

  args

  for all dynamic props to enable the Controls panel, and add

  play

  functions with

  @storybook/test

  for automated interaction testing.
• When adding documentation, use autodocs tag for automatic generation from stories, or MDX files for combining prose with live component examples using doc blocks like

  <Canvas>

  ,

  <Controls>

  , and

  <ArgTypes>

  .
• When testing accessibility, enable

  @storybook/addon-a11y

  which runs axe-core audits on every story automatically.
• When setting up visual regression, integrate Chromatic or Percy for screenshot comparison across PRs, and run

  @storybook/test-runner

  in CI to execute all play functions.
• When configuring globally, set shared decorators (ThemeProvider, RouterProvider) and parameters in

  .storybook/preview.ts

  to apply to all stories.
• When organizing, use sidebar hierarchy with

  title: "Components/Forms/Input"

  and keep stories co-located with components (

  Button.tsx

  +

  Button.stories.tsx

  ).

Examples

Example 1: Build a component library with stories

User request: "Set up Storybook for our React component library with all variants"

Actions:

1. Initialize Storybook with

   npx storybook@latest init

   for the React Vite framework
2. Write stories for each component with args for variant, size, disabled, and loading states
3. Add play functions for interactive components (buttons, forms, modals)
4. Configure autodocs for automatic documentation generation

Output: A browsable component catalog with interactive controls and auto-generated docs.

Example 2: Add visual regression testing to CI

User request: "Set up visual testing for our Storybook components in CI"

Actions:

1. Install

   @storybook/test-runner

   and configure CI pipeline
2. Add

   @storybook/addon-a11y

   for accessibility checks
3. Integrate Chromatic for visual regression screenshots on each PR
4. Configure the test-runner to execute all play functions in headless Playwright

Output: A CI pipeline that catches visual regressions, accessibility issues, and broken interactions.

Guidelines

• Write at least one story per component variant: default, loading, error, disabled, and empty states.
• Use

  args

  for all dynamic props to enable the Controls panel and story composition.
• Keep stories next to components:

  Button.tsx

  +

  Button.stories.tsx

  in the same directory.
• Add play functions for interactive components: buttons, forms, modals, and dropdowns.
• Use decorators for shared context (ThemeProvider, RouterProvider) at the preview level.
• Document design decisions in MDX: when to use each variant, dos and don'ts.
• Run

  storybook test-runner

  in CI to catch broken interactions before merge.