claude-code-system-prompts/system-prompts/skill-design-sync-storybook-source-shape.md

Storybook source shape

.storybook/ found — the repo's own Storybook is the preview source. The converter ships storybook-static/ as _sb/ and each preview card is an iframe grid of _sb/iframe.html?id=<storyId>, so whatever renders in their Storybook renders here verbatim (their builder's CSS, addons, and providers apply as-is).

Requires React 18+.

2. Build, then run the converter

1. Build the DS package. The converter bundles dist/ into window.<Global>. Run <pm> run build (or turbo run build --filter=<pkg>, pnpm -F <pkg> build, nx build <pkg> in a monorepo). If package.json module/exports['.'] points at TS source, find the actual built entry and pass it via --entry.

2. Build Storybook directly into ds-bundle/_sb/. npx storybook build -o ds-bundle/_sb (or npm run build-storybook -- -o ds-bundle/_sb). Check ds-bundle/_sb/iframe.html exists and is >10KB — index.json alone can exist with a failed build. Building straight into _sb/ means no copy step; the converter strips .map/manager files in-place.

3. Write design-sync.config.json — only pkg and globalName required. Commit it.

   Field	Value
   pkg / globalName	package name and the window.* global — required
   buildCmd	the DS build command — Claude re-runs this before the converter on re-sync
   entry	explicit dist entry if package.json doesn't point at it
   extraEntries	package names/subpaths to merge into window.<Global> (icon package, <pkg>/experimental, etc.)
   titleMap	{title: ExportName} when story titles don't match export names
   docsDir / docsMap / guidelinesGlob	per-component docs + design guidelines
   extraFonts	@font-face css or .woff2 files when [FONT_MISSING] fires
   replaces	extends the adherence-config raw-element map
   notes	path to a notes file — default ./.design-sync/NOTES.md

4. Run the converter. Stage lib/ + storybook/, install deps (use the repo's own package manager if npm i --no-save fails on workspace: protocol), then:

cp -r "<skill-base-dir>"/lib "<skill-base-dir>"/storybook .
npm i --no-save esbuild ts-morph @types/react playwright && npx playwright install chromium
node storybook/build.mjs --config design-sync.config.json --node-modules ./node_modules \
  --pkg-dir . --out ./ds-bundle
node storybook/validate.mjs ./ds-bundle

Run build and validate synchronously (foreground) and check each exit code. If chromium install fails, run npx playwright install-deps chromium first.

3. Self-heal loop

Tag	Symptom	Fix
[SB_MISSING]	no iframe.html / index.json	Run build-storybook. Check PIPESTATUS — the build can exit 0 with a broken output.
[NO_DIST] / [CONFIG] can't find <pkg>/package.json	package not built or not found	Run the DS build; pass --pkg-dir / --entry.
[ZERO_MATCH]	no story titles matched an export	Check titleMap — titles should resolve to export names.
[TITLE_UNMAPPED]	N titles didn't match	Add cfg.titleMap entries.
[BUNDLE_EXPORT]	N components aren't functions on window.<Global>	Check extraEntries for subpath exports; check the dist entry is the full build.
[BUNDLE_MOUNT]	first component threw on mount	Usually the provider needs a required prop (theme, locale, etc.). Set cfg.provider with props: {"component": "<Provider>", "props": {"theme": {...}}}. For a chain, nest via "inner": {...}.
[BUNDLE_STYLE]	rendered but no styling reached the element	For CSS-in-JS DSes this usually means the provider wrapper isn't passing a theme — set cfg.provider with the theme prop the DS expects. Otherwise check styles.css has @import './_ds_bundle.css' + the storybook-static CSS concat.
[NO_CHROMIUM]	playwright not installed	Degraded — .prompt.md has no argTypes table and provider isn't auto-detected. Set cfg.provider manually if the DS needs one.
[TOKENS_MISSING]	styles.css has no custom properties	Informational — CSS-in-JS DSes may have none.
[IFRAME_LOAD]	first preview iframe didn't render	_sb/iframe.html failed to load a story. Open it in a browser; check for missing _sb/ assets the strip dropped.
[SB_SIZE]	_sb/ >50MB	Consider excluding dev/playground/kitchen-sink stories from the storybook config's stories glob.
[PROVIDER_DETECTED]	<Chain>	Informational — written to config + README so the design agent wraps output the same way.

4. Upload

DesignSync(finalize_plan) with localDir: "./ds-bundle", writes: ["components/**", "_sb/**", "_vendor/**", "guidelines/**", "fonts/**", "_ds_bundle.js", "_ds_bundle.css", "styles.css", "README.md", "_ds_needs_recompile"], deletes: []. Dot-prefixed entries stay local.

When done, tell the user: the project URL, component count, _sb/ size, and that validate exited clean. Commit design-sync.config.json and .design-sync/NOTES.md.

What this is not

Not an LLM rewriting components. The previews are the repo's own Storybook verbatim; the bundle is their compiled dist/.