import { type UseBookingItemsOptions } from "./use-booking-items.js";
export type UseBookingPrimaryProductOptions = UseBookingItemsOptions;
export interface UseBookingPrimaryProductResult {
    /**
     * The productId of the first booking item that has a non-null productId,
     * or null if no item has one (or items haven't loaded yet).
     */
    productId: string | null;
    /**
     * The optionUnitId from the same item the `productId` was sourced from,
     * or null if that item has none (or no item resolved).
     */
    optionUnitId: string | null;
    /** True while the underlying items query has no data yet. */
    isPending: boolean;
    /** True while the underlying items query is loading for the first time. */
    isLoading: boolean;
}
/**
 * Derive the "primary product" of a booking from its items.
 *
 * Tour-operator-style bookings are almost always scoped to a single product,
 * but the product association lives on `bookingItem`, not `booking`. This hook
 * encapsulates the canonical resolution — "first item with a non-null
 * productId" — so consumers don't duplicate it.
 */
export declare function useBookingPrimaryProduct(bookingId: string | null | undefined, options?: UseBookingPrimaryProductOptions): UseBookingPrimaryProductResult;