Storybook

Use this skill when work touches Storybook 10 (or upgrades into it): stories, CSF, config, docs, interaction/a11y/visual tests, Vitest addon, portable stories, framework packages, or migrations from 8.x/9.x.

Workflow

1. Inspect the local Storybook surface before changing code:

- Package versions for storybook, framework package (e.g. @storybook/react-vite, @storybook/nextjs-vite), @storybook/addon-docs, @storybook/addon-a11y, @storybook/addon-vitest, Node, Vite/Vitest, and React/Vue/Svelte peers. - Config: .storybook/main.ts|js (must be ESM), preview.ts|tsx, optional manager.ts, vitest.setup.ts, story globs, staticDirs. - Story style: CSF3 Meta/StoryObj, experimental CSF Next (definePreview / preview.meta / meta.story), MDX docs, tags. - Testing path: Vitest addon, legacy test-runner, portable composeStories, Chromatic/visual, a11y.

1. Refresh current docs when versions are unclear or work touches upgrades, ESM, CSF Next, or Vitest browser mode. Start from [source-map.md](references/source-map.md).
2. For install, frameworks, main/preview, core features vs addons, and CLI, use [setup-core.md](references/setup-core.md).
3. For CSF3/CSF Next, args, render, decorators, parameters, tags, and docs, use [writing-stories.md](references/writing-stories.md).
4. For play, storybook/test, Vitest addon, portable stories, and a11y, use [testing.md](references/testing.md).
5. For builds, CI, doctor/upgrade, 8→9→10 package moves, and common failures, use [production-migration.md](references/production-migration.md).

Implementation Judgment

• Target Storybook 10 unless the repo is intentionally pinned. Prefer framework packages for types/imports (@storybook/react-vite), not orphaned renderer-only packages.
• Write CSF3 by default (satisfies Meta, StoryObj). Treat CSF Next as experimental opt-in; do not rewrite a stable CSF3 codebase without approval.
• Import test utilities from storybook/test (and manager/preview APIs from storybook/manager-api / storybook/preview-api). Do not reintroduce @storybook/test, @storybook/addon-interactions, or @storybook/addon-essentials.
• Controls, actions, viewport, and interactions live in core. Install @storybook/addon-docs, @storybook/addon-a11y, and @storybook/addon-vitest when those features are needed.
• Prefer @storybook/addon-vitest over @storybook/test-runner for Vite React/Vue/Svelte projects. Next.js needs @storybook/nextjs-vite for the Vitest addon.
• Keep stories colocated with components. Prefer args + Controls over story-local React state; use play for interactions and assertions.
• Use tags deliberately (autodocs, !autodocs, !test, custom filters). Titles/component on meta must be statically analyzable.
• .storybook/main.* must be valid ESM (no require / __dirname). Use import.meta.url for path math.

Verification

Prefer the repo's existing checks. For meaningful Storybook changes, include the relevant subset:

• bun run storybook (or project script) smoke that stories compile and render.
• bunx storybook build when changing main config, framework, Vite aliases, or ESM boundaries.
• bunx storybook doctor after upgrades or mismatched @storybook/* versions.
• Focused Vitest story project (vitest --project=storybook) or UI testing widget when changing play/a11y/coverage.
• Typecheck for Meta/StoryObj, framework imports, and storybook/test usage.
• Visual/Chromatic or a11y smoke when those pipelines are in the repo.