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Async UI for remote data — loading, error, retry, empty, stale, cache boundaries. Use when building lists, detail pages, dashboards fed by API, React Query/SWR, fetch/loaders, or "ambil data", "loading state API", "retry".
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Based on SOC occupation classification
Chat-first frontend UI quality suite — 22 skills across UI Quality, Responsive, Ship FE, and Depth pillars. Token decision tree, compliance gates, anti-AI-slop, motion vocabulary (12 families), marketing landing recipes, and quality loop. Auto-loads on any UI/build/audit/polish request — no slash commands needed.
Enforce WCAG 2.1 AA (keyboard, ARIA, focus, contrast, semantic HTML). Use for accessibility work, pre-ship UI checks, and as a light pass on every UI build or design review — including "a11y", "keyboard", "screen reader", or shipping user-facing changes, without requiring a slash command.
Name a design or UI concept from a loose description. Reverse-lookup for design terms — user describes something vaguely ("card floating over blur", "zig-zag layout"), skill returns the proper name + brief definition. Use when the user uses informal language for a UI concept, or when you need the correct term to search references or communicate precisely.
Name a frontend engineering concept from a loose description. Reverse-lookup for FE technical terms — user describes a pattern informally ("supaya gak fetch ulang", "render cuma yang keliatan"), skill returns the proper name + brief definition. Use when the user uses informal language for a technical concept, or when you need the correct term to pick the right implementation.
Optimize frontend Core Web Vitals (LCP, INP, CLS) and loading/rendering/network. Use when the UI feels slow, images/fonts/bundles need work, or during design audits that touch performance — phrases like "lemot", "optimize", "LCP", or "Core Web Vitals" without requiring a slash command.
Write new skill files for the Frontend Expert pack following conventions. Use when the user wants to add a new skill, extend the pack, or says "make this a skill", "buat skill baru", or "tambah skill". Documents the pack's SKILL.md structure, frontmatter format, checklist pattern, and integration points (AGENTS.md, plugin.json, compliance-gates).
| name | data-fetching |
| description | Async UI for remote data — loading, error, retry, empty, stale, cache boundaries. Use when building lists, detail pages, dashboards fed by API, React Query/SWR, fetch/loaders, or "ambil data", "loading state API", "retry". |
Separate server state from UI chrome. Every remote surface needs loading / error / empty / success — with retry where useful. Parity with Conventions States line.
useEffect fetch| State | Required UX |
|---|---|
| Loading | Skeleton/placeholder — not a blank hole (prefer local to the widget) |
| Error | User-safe message + Retry (or clear next step) |
| Empty | Real empty copy + optional action (not Lorem) |
| Success | Render data; don’t leave stale error UI |
Also: abort/cancel on unmount when using raw fetch; don’t block the whole app shell for one panel.
ui-components; tokens + responsive-ui still applyStates: loading / empty / error covered? yesuseEffect machine; skeleton vs spinner; toast vs inline errorconsole.log only; ship success-only UI; invent off-token loading colorsPatterns: references/data-fetching.md.
State org: references/architecture.md.
Ship gate: references/compliance-gates.md (States).