{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Build a TypeScript React example for savings goals in a personal finance coaching app. Use the toast queue provider pattern, keep the API reusable, and give the UI a distinctive dark, editorial treatment."},{"role":"assistant","content":"This version applies toast queue provider to a real a personal finance coaching app workflow, while the midnight cyan palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { createContext, useContext } from \"react\";\n\ntype Toast = { id: number; message: string };\nconst ToastContext = createContext<{ toasts: Toast[]; push: (message: string) => void } | null>(null);\nfunction useToasts() { const value = useContext(ToastContext); if (!value) throw new Error(\"ToastProvider is required\"); return value; }\nfunction ToastViewport() { const { toasts } = useToasts(); return
Keep behavior near the decision it serves, while letting the surrounding page stay easy to scan and test.
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Debug a React implementation for tool reservations in a maker-space equipment desk. The interaction works only with a mouse and state leaks between views. Replace the fragile approach with feature flag provider and explain the important fix briefly."},{"role":"assistant","content":"This version applies feature flag provider to a real a maker-space equipment desk workflow, while the forest lime palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { createContext, useContext } from \"react\";\n\nconst FlagContext = createContext | null>(null);\nfunction Feature({ name, children }: { name: string; children: React.ReactNode }) { const flags = useContext(FlagContext); if (!flags) throw new Error(\"FlagProvider is required\"); return flags[name] ? <>{children} : null; }\n\nfunction ReservationContextFlags1Core() {\n return
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Turn this UI brief into React: a focused control surface for book orders in an independent bookstore back office, with a clear hierarchy, strong focus states, and derived summary with useMemo. Prefer a non-generic layout."},{"role":"assistant","content":"This version applies derived summary with useMemo to a real an independent bookstore back office workflow, while the lagoon emerald palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useMemo } from \"react\";\n\ntype LedgerLine = { label: string; amount: number; approved: boolean };\nfunction OrderMemoSummary1Core() {\n const [showApproved, setShowApproved] = useState(true);\n const lines: LedgerLine[] = [{ label: \"Field work\", amount: 320, approved: true }, { label: \"Materials\", amount: 140, approved: false }, { label: \"Travel\", amount: 90, approved: true }];\n const summary = useMemo(() => lines.filter((line) => showApproved || !line.approved).reduce((sum, line) => sum + line.amount, 0), [lines, showApproved]);\n return
)};\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"I keep coupling rendering and behavior in open matters in a legal case-intake workspace. Refactor this sketch using stable callback for child actions: function Screen() { return ; }. Show the improved implementation."},{"role":"assistant","content":"This version applies stable callback for child actions to a real a legal case-intake workspace workflow, while the ink fuchsia palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { memo, useCallback } from \"react\";\n\nconst CommandBar = memo(function CommandBar({ onCreate, count }: { onCreate: () => void; count: number }) {\n return
)};\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Build a TypeScript React example for brew batches in a craft brewery operations panel. Use the deferred filter input pattern, keep the API reusable, and give the UI a distinctive dark, editorial treatment."},{"role":"assistant","content":"This version applies deferred filter input to a real a craft brewery operations panel workflow, while the rose orange palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useDeferredValue } from \"react\";\n\nfunction BatchDeferred1Core() {\n const [query, setQuery] = useState(\"\");\n const deferredQuery = useDeferredValue(query);\n const entries = [\"Aurora\", \"Beacon\", \"Cinder\", \"Delta\", \"Ember\", \"Fjord\"].filter((entry) => entry.toLowerCase().includes(deferredQuery.toLowerCase()));\n const stale = query !== deferredQuery;\n return
Brew batches
Keep typing urgent; let dense filtering trail behind.
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Debug a React implementation for station readings in a coastal weather research app. The interaction works only with a mouse and state leaks between views. Replace the fragile approach with transitioned non-urgent view and explain the important fix briefly."},{"role":"assistant","content":"This version applies transitioned non-urgent view to a real a coastal weather research app workflow, while the plum pink palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useTransition } from \"react\";\n\nfunction ReadingTransition1Core() {\n const [view, setView] = useState(\"overview\");\n const [isPending, startTransition] = useTransition();\n const chooseView = (next: string) => startTransition(() => setView(next));\n return
Station readings
Switch non-urgent views in a transition.
{isPending ? \"Updating view…\" : \"Ready\"}
{view}
The selected panel can take its time without blocking the button press.
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Explain when to use controlled segmented picker in a boutique hotel operations console, then show a compact production-minded component for guest arrivals in a boutique hotel operations console."},{"role":"assistant","content":"This version applies controlled segmented picker to a real a boutique hotel operations console workflow, while the obsidian amber palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\ntype View = \"agenda\" | \"board\" | \"archive\";\nfunction SegmentedPicker({ value, onChange }: { value: View; onChange: (view: View) => void }) {\n return
{([\"agenda\", \"board\", \"archive\"] as View[]).map((view) => )}
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Turn this UI brief into React: a focused control surface for open loans in a community lending library, with a clear hierarchy, strong focus states, and uncontrolled FormData form. Prefer a non-generic layout."},{"role":"assistant","content":"This version applies uncontrolled FormData form to a real a community lending library workflow, while the deep indigo palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nfunction LoanUncontrolledForm1Core() {\n const [result, setResult] = useState(\"\");\n function submit(formData: FormData) { setResult(String(formData.get(\"note\") ?? \"\").trim() || \"Add a note before submitting.\"); }\n return
Open loans
Use the platform form contract when every keystroke is not state.
Keep behavior near the decision it serves, while letting the surrounding page stay easy to scan and test.
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"I keep coupling rendering and behavior in aid requests in a disaster-relief coordination room. Refactor this sketch using controllable toggle contract: function Screen() { return ; }. Show the improved implementation."},{"role":"assistant","content":"This version applies controllable toggle contract to a real a disaster-relief coordination room workflow, while the charcoal yellow palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\ntype ToggleProps = { checked?: boolean; defaultChecked?: boolean; onCheckedChange?: (checked: boolean) => void; label: string };\nfunction Toggle({ checked, defaultChecked = false, onCheckedChange, label }: ToggleProps) {\n const [internal, setInternal] = useState(defaultChecked);\n const isControlled = checked !== undefined;\n const value = isControlled ? checked : internal;\n function change(next: boolean) { if (!isControlled) setInternal(next); onCheckedChange?.(next); }\n return ;\n}\nfunction RequestControllableToggle1Core() {\n const [alerts, setAlerts] = useState(true);\n return
;\n}\n\n\nfunction RequestControllableToggle1PatternLens() {\n const [note, setNote] = useState(\"\");\n const [entries, setEntries] = useState([]);\n function addNote(event: React.FormEvent) { event.preventDefault(); const value = note.trim(); if (value) { setEntries((current) => [value, ...current]); setNote(\"\"); } }\n return ;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Build a TypeScript React example for tool reservations in a maker-space equipment desk. Use the hybrid editable field pattern, keep the API reusable, and give the UI a distinctive dark, editorial treatment."},{"role":"assistant","content":"This version applies hybrid editable field to a real a maker-space equipment desk workflow, while the midnight cyan palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\ntype EditableProps = { initialValue: string; onCommit: (value: string) => void };\nfunction EditableLabel({ initialValue, onCommit }: EditableProps) {\n const [editing, setEditing] = useState(false);\n const [draft, setDraft] = useState(initialValue);\n return editing ? : ;\n}\nfunction ReservationHybridField1Core() {\n const [label, setLabel] = useState(\"Review queue\");\n return
Tool reservations
Transient local input meets an explicit commit boundary.
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Debug a React implementation for archive assets in a documentary archive catalog. The interaction works only with a mouse and state leaks between views. Replace the fragile approach with query-state render prop and explain the important fix briefly."},{"role":"assistant","content":"This version applies query-state render prop to a real a documentary archive catalog workflow, while the forest lime palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useEffect } from \"react\";\n\ntype QueryState = { data: T[]; loading: boolean; error: string | null };\nfunction Query({ load, children }: { load: () => Promise; children: (state: QueryState) => React.ReactNode }) {\n const [state, setState] = useState>({ data: [], loading: true, error: null });\n useEffect(() => { let active = true; load().then((data) => active && setState({ data, loading: false, error: null })).catch(() => active && setState({ data: [], loading: false, error: \"Could not load records.\" })); return () => { active = false; }; }, [load]);\n return <>{children(state)};\n}\nconst loadRecords = async () => { await new Promise((resolve) => window.setTimeout(resolve, 250)); return [\"North wing\", \"Harbor desk\", \"Field team\"]; };\nfunction AssetRenderQuery1Core() {\n return
Archive assets
The caller owns the loading, empty, and success markup.
)};\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Explain when to use pointer-position render prop in an independent bookstore back office, then show a compact production-minded component for book orders in an independent bookstore back office."},{"role":"assistant","content":"This version applies pointer-position render prop to a real an independent bookstore back office workflow, while the ocean teal palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\ntype PointerRender = (position: { x: number; y: number; active: boolean }) => React.ReactNode;\nfunction PointerCanvas({ children }: { children: PointerRender }) {\n const [position, setPosition] = useState({ x: 50, y: 50, active: false });\n return
)};\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Turn this UI brief into React: a focused control surface for open matters in a legal case-intake workspace, with a clear hierarchy, strong focus states, and accessible compound tabs. Prefer a non-generic layout."},{"role":"assistant","content":"This version applies accessible compound tabs to a real a legal case-intake workspace workflow, while the lagoon emerald palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { createContext, useContext } from \"react\";\n\nconst TabsContext = createContext<{ value: string; setValue: (value: string) => void } | null>(null);\nfunction useTabs() { const value = useContext(TabsContext); if (!value) throw new Error(\"Tabs components need Tabs.Root\"); return value; }\nfunction TabsRoot({ children }: { children: React.ReactNode }) { const [value, setValue] = useState(\"brief\"); return {children}; }\nfunction TabsList({ children }: { children: React.ReactNode }) { return
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"I keep coupling rendering and behavior in brew batches in a craft brewery operations panel. Refactor this sketch using compound accordion state: function Screen() { return ; }. Show the improved implementation."},{"role":"assistant","content":"This version applies compound accordion state to a real a craft brewery operations panel workflow, while the ink fuchsia palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { createContext, useContext } from \"react\";\n\nconst AccordionContext = createContext<{ open: string | null; toggle: (id: string) => void } | null>(null);\nfunction AccordionRoot({ children }: { children: React.ReactNode }) { const [open, setOpen] = useState(\"first\"); return setOpen((current) => current === id ? null : id) }}>{children}; }\nfunction AccordionItem({ id, title, children }: { id: string; title: string; children: React.ReactNode }) { const state = useContext(AccordionContext); if (!state) throw new Error(\"AccordionItem requires AccordionRoot\"); const open = state.open === id; return {open &&
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Build a TypeScript React example for community programs in a public library event planner. Use the section error boundary pattern, keep the API reusable, and give the UI a distinctive dark, editorial treatment."},{"role":"assistant","content":"This version applies section error boundary to a real a public library event planner workflow, while the rose orange palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { Component, type ErrorInfo, type ReactNode } from \"react\";\n\ntype BoundaryState = { hasError: boolean };\nclass SectionBoundary extends Component<{ children: ReactNode }, BoundaryState> {\n state: BoundaryState = { hasError: false };\n static getDerivedStateFromError() { return { hasError: true }; }\n componentDidCatch(error: Error, info: ErrorInfo) { console.error(\"Section failed\", error, info.componentStack); }\n render() { return this.state.hasError ?
This panel could not load. The rest of the workspace is still available.
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Debug a React implementation for today's visits in a telehealth clinic workspace. The interaction works only with a mouse and state leaks between views. Replace the fragile approach with retryable error boundary with reset key and explain the important fix briefly."},{"role":"assistant","content":"This version applies retryable error boundary with reset key to a real a telehealth clinic workspace workflow, while the plum pink palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { Component, type ReactNode } from \"react\";\n\nclass RetryBoundary extends Component<{ resetKey: string; children: ReactNode }, { error: boolean }> {\n state = { error: false };\n static getDerivedStateFromError() { return { error: true }; }\n componentDidUpdate(previous: { resetKey: string }) { if (previous.resetKey !== this.props.resetKey && this.state.error) this.setState({ error: false }); }\n render() { return this.state.error ?
Change the filter to retry this isolated region.
: this.props.children; }\n}\nfunction Report({ filter }: { filter: string }) { if (filter === \"broken\") throw new Error(\"Filter error\"); return
Keep behavior near the decision it serves, while letting the surrounding page stay easy to scan and test.
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Explain when to use lazy-loaded analytics island in a community lending library, then show a compact production-minded component for open loans in a community lending library."},{"role":"assistant","content":"This version applies lazy-loaded analytics island to a real a community lending library workflow, while the obsidian amber palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { lazy, Suspense } from \"react\";\n\nconst AnalyticsPanel = lazy(async () => {\n await new Promise((resolve) => window.setTimeout(resolve, 250));\n return { default: function AnalyticsPanel() { return
;\n}\n\n\nfunction LoanSuspenseLazy1PatternLens() {\n const [note, setNote] = useState(\"\");\n const [entries, setEntries] = useState([]);\n function addNote(event: React.FormEvent) { event.preventDefault(); const value = note.trim(); if (value) { setEntries((current) => [value, ...current]); setNote(\"\"); } }\n return ;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Turn this UI brief into React: a focused control surface for aid requests in a disaster-relief coordination room, with a clear hierarchy, strong focus states, and resource boundary with fallback. Prefer a non-generic layout."},{"role":"assistant","content":"This version applies resource boundary with fallback to a real a disaster-relief coordination room workflow, while the deep indigo palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { Suspense } from \"react\";\n\ntype Resource = { read: () => T };\nfunction createResource(promise: Promise): Resource {\n let status = \"pending\"; let result: T;\n const suspender = promise.then((value) => { status = \"success\"; result = value; });\n return { read() { if (status === \"pending\") throw suspender; return result; } };\n}\nconst resource = createResource(new Promise((resolve) => window.setTimeout(() => resolve([\"Signal\", \"Owner\", \"Decision\"]), 300)));\nfunction ResourceList() { const labels = resource.read(); return
;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"I keep coupling rendering and behavior in tool reservations in a maker-space equipment desk. Refactor this sketch using react-hook-form validation: function Screen() { return ; }. Show the improved implementation."},{"role":"assistant","content":"This version applies react-hook-form validation to a real a maker-space equipment desk workflow, while the charcoal yellow palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useForm } from \"react-hook-form\";\n\ntype FormValues = { title: string; owner: string; priority: \"low\" | \"high\" };\nfunction ReservationRhf1Core() {\n const { register, handleSubmit, formState: { errors, isSubmitting } } = useForm({ defaultValues: { title: \"\", owner: \"\", priority: \"low\" } });\n const [saved, setSaved] = useState(false);\n const submit = async (values: FormValues) => { await new Promise((resolve) => window.setTimeout(resolve, 250)); setSaved(Boolean(values.title)); };\n return
Tool reservations
A library can own validation while the form remains semantic.