Reactjs Dev

ReactJS (Vite SPA) Developer

Build production-ready ReactJS web SPA features using Vite, React Router, TanStack Query, Zustand, Tailwind CSS, Framer Motion, and ApexCharts. All features consume the shared Rails API backend.

the std-reactjs skill

Development Workflow

Step 1: Understand the Feature

1. Clarify which pages/routes are needed and their URL structure.
2. Identify data requirements — which Rails API endpoints to consume.
3. Determine client-side state needs (filters, sidebar, theme).
4. Check if real-time updates are needed (Centrifugo subscription).
5. Identify animations or chart requirements.

Step 2: Define Domain Types

Create TypeScript types in web/src/domain/ or web/src/types/:

// web/src/domain/order.ts
export interface Order {
  id: string;
  status: OrderStatus;
  totalAmount: number;
  items: OrderItem[];
  createdAt: string;
}

export type OrderStatus = 'pending' | 'confirmed' | 'shipped' | 'delivered' | 'cancelled';

• Pure TypeScript — no React imports.
• Shared across hooks, components, and API client.

Step 3: Build API Layer

Create TanStack Query hooks in web/src/api/:

// web/src/api/orders.ts
import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
import { apiClient } from './client';
import type { Order, CreateOrderPayload } from '../domain/order';

export function useOrders(params?: { status?: string; page?: number }) {
  return useQuery({
    queryKey: ['orders', params],
    queryFn: () => apiClient.get<Order[]>('/api/v1/orders', { params }),
    staleTime: 30_000,
  });
}

export function useCreateOrder() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: (payload: CreateOrderPayload) => apiClient.post('/api/v1/orders', payload),
    onSuccess: () => queryClient.invalidateQueries({ queryKey: ['orders'] }),
  });
}

Step 4: Build Page Components

Create page components in web/src/pages/:

• Keep pages thin — compose hooks and presentational components.
• Use Tailwind CSS for all styling.
• Wrap interactive sections in <Suspense> boundaries.

Step 5: Configure Routes

Add lazy-loaded routes in web/src/router/index.tsx:

const OrdersPage = lazy(() => import('../pages/Orders'));
// Add to router config with appropriate auth guards

Step 6: Add Animations (Optional)

Use Framer Motion for page transitions and micro-interactions:

import { motion, AnimatePresence } from 'framer-motion';

<AnimatePresence mode="wait">
  <motion.div
    key={pathname}
    initial={{ opacity: 0, y: 20 }}
    animate={{ opacity: 1, y: 0 }}
    exit={{ opacity: 0, y: -20 }}
    transition={{ duration: 0.2 }}
  >
    {children}
  </motion.div>
</AnimatePresence>

Step 7: Add Charts (Optional)

Use ApexCharts for dashboard visualizations:

import Chart from 'react-apexcharts';

<Chart
  type="area"
  height={350}
  options={{ chart: { id: 'revenue' }, xaxis: { categories: months } }}
  series={[{ name: 'Revenue', data: revenueData }]}
/>

Step 8: Add Forms

Use react-hook-form + zod for all forms:

const schema = z.object({ email: z.string().email(), name: z.string().min(1) });
type FormData = z.infer<typeof schema>;

const { register, handleSubmit, formState: { errors } } = useForm<FormData>({
  resolver: zodResolver(schema),
});

Step 9: Testing

• Write Vitest + React Testing Library tests for all components.
• Mock API calls with MSW.
• Test user interactions, not implementation details.
• Priority: getByRole > getByLabelText > getByText > getByTestId.

Checklist Before Done

• TypeScript strict mode, no any types
• All routes lazy-loaded
• Server data in TanStack Query, client-only state in Zustand
• Forms use react-hook-form + zod
• Tailwind CSS for all styling (no inline styles or CSS modules)
• Responsive design (mobile-first breakpoints)
• Accessibility: semantic HTML, keyboard navigation, ARIA labels
• Tests written with Vitest + React Testing Library
• Bundle size checked with vite-bundle-visualizer

Deep guides (read on demand, do not preload)

• Page components, auth guards, react-hook-form + zod + Tailwind, the cn() utility → references/component-patterns.md
• Zustand with persistence, React Router config, the axios client with interceptors, Vitest + MSW tests → references/data-patterns.md
• Framer Motion page/list transitions, ApexCharts revenue and donut charts → references/ui-patterns.md

Owned by std-reactjs (scoped to Vite SPA work)

These are decision-shaped and carry the bad/good pairs. The three files above are worked patterns; these answer which pattern and why:

• State placement — Zustand vs TanStack Query vs local → @skills/std-reactjs/references/state-placement.md
• Data fetching (TanStack Query + axios), staleTime/gcTime, key factories → @skills/std-reactjs/references/data-fetching.md
• Routing, code splitting, and the bundle budget → @skills/std-reactjs/references/routing-and-code-split.md
• Forms (react-hook-form + zod) → @skills/std-reactjs/references/forms.md
• Testing (Vitest + RTL + MSW) → @skills/std-reactjs/references/testing.md
• Animation (Framer Motion) → @skills/std-reactjs/references/animation.md
• Charts (ApexCharts) → @skills/std-reactjs/references/charts.md

Initial JS budget: < 300KB minified/uncompressed — enforced by chunkSizeWarningLimit: 300 in vite.config.ts, so it is a number the build already checks. staleTime is deliberately per query, not one default: data-fetching.md has the table.