Type Alias: CartManagerStatus

CartManagerStatus = { type: "idle"; } | { operation: CartManagerOperation; type: "loading"; } | { error: Error; operation: CartManagerOperation; type: "error"; } | { operation: CartManagerOperation; type: "success"; }

Tagged union of cart mutation lifecycle states. Lets callers do exhaustive switching without remembering which boolean flag pairs with which:

const { status } = useCartManager();
if (status.type === 'loading') return <Spinner label={status.operation} />;
if (status.type === 'error') return <ErrorBanner error={status.error} />;
// narrowed here: status.type ∈ { 'idle', 'success' }

idle is the initial state and the state after clearCart().