React

Instructions

This project uses React 19 with TypeScript and the React Compiler enabled via babel-plugin-react-compiler.

Component Structure

• Pages live in resources/js/pages/ and are rendered via Inertia
• Shared components live in resources/js/components/
• UI primitives (shadcn/ui) live in resources/js/components/ui/
• Custom hooks live in resources/js/hooks/

Page Props from Controllers

Always receive page data as props from the Laravel controller via Inertia. Do NOT fetch data client-side or use useEffect to load page data.

interface EditProjectProps { project: Project; clients: Client[]; }

export default function EditProject({ project, clients }: EditProjectProps) { return ( <Form action={update({ project: project.id }).url} method="patch"> {/* Form fields using project and clients data */} </Form> ); }

This pattern ensures:

• State consistency - The server is the single source of truth; no client-side caching or stale data issues
• Data is loaded server-side before the page renders
• No loading states needed for initial page data
• SEO-friendly server-rendered content
• Type-safe props matching controller output

TypeScript Conventions

• All component props should be typed explicitly
• Use interfaces for object shapes, defined in resources/js/types/index.d.ts
• Prefer React.ComponentProps<"element"> for extending native element props
• Use path aliases: @/components, @/hooks, @/lib, @/types

interface CardProps { title: string; description?: string; className?: string; children: React.ReactNode; }

export function Card({ title, description, className, children }: CardProps) { return ( <div className={cn('rounded-lg border p-4', className)}> <h3 className="font-semibold">{title} {description && <p className="text-muted-foreground">{description}} {children} ); }

React 19 + React Compiler

• The React Compiler automatically memoizes components and hooks
• Do NOT manually add useMemo, useCallback, or React.memo unless profiling shows a specific need
• Write straightforward code and let the compiler optimize

State Management

• Use React's built-in useState and useReducer for local state
• Use Inertia's shared data for server-provided state (accessed via usePage())
• For form state, use the Inertia <Form> component (see inertia skill)

export function UserGreeting() { const { auth } = usePage<SharedData>().props;

return <span>Hello, {auth.user.name}</span>;

}

Event Handlers

• Use inline arrow functions for simple handlers
• Extract to named functions only when logic is complex or reused

Conditional Rendering

• Use early returns for guard clauses
• Prefer && for simple conditionals, ternaries for if/else
• Use separate components for complex conditional logic

return (
    <div>
        {data.items.length > 0 && <ItemList items={data.items} />}
        {data.error ? <ErrorMessage error={data.error} /> : <SuccessIndicator />}
    </div>
);

}

File Naming

• Components: PascalCase (UserCard.tsx)
• Hooks: camelCase with use prefix (useClipboard.ts)
• Utilities: camelCase (formatDate.ts)
• Pages: kebab-case matching the route (edit.tsx, create.tsx, index.tsx)