Basic patterns
tsx
{isLoading && <Spinner />}
{hasError ? <ErrorView /> : <DataView />}Early returns for clarity
tsx
if (!user) return <LoginPrompt />;
return <Dashboard user={user} />;Render null when needed
tsx
if (!isVisible) return null;Real-world states
Most pages should handle:
- Loading state
- Empty state
- Error state
- Success/data state
Next, we will render dynamic lists correctly with keys.