import type { AddOrUpdateItemError } from '@scayle/storefront-api';
/**
 * Checks if all basket add/update errors indicate that items were added with reduced quantity.
 * This function helps determine if a basket operation partially succeeded, meaning some items were added but with a lower quantity than requested.
 *
 * @param errors An array of `AddOrUpdateItemError` objects, typically returned from a basket add/update operation.
 * @returns `true` if all errors indicate reduced quantity, `false` otherwise (including when the `errors` array is empty, null, or undefined).
 *
 * @example
 * ```typescript
 * const errors: AddOrUpdateItemError[] = [
 *   { operation: 'add', kind: AddToBasketFailureKind.ITEM_ADDED_WITH_REDUCED_QUANTITY, variantId: 123 },
 *   { operation: 'update', kind: UpdateBasketItemFailureKind.ITEM_ADDED_WITH_REDUCED_QUANTITY, variantId: 456 },
 * ]
 *
 * const allReducedQuantity = wasAddedWithReducedQuantity(errors) // true
 *
 * const noErrors = wasAddedWithReducedQuantity() // false
 *
 * const otherErrors = wasAddedWithReducedQuantity([
 *   { operation: 'add', kind: AddToBasketFailureKind.ITEM_NOT_FOUND, variantId: 789 },
 * ]) // false
 * ```
 */
export declare const wasAddedWithReducedQuantity: (errors?: AddOrUpdateItemError[]) => boolean;
/**
 * Merges the two orderCustomData objects when both RPC and parameter values are provided.
 * If an attribute exists in both, the parameter value takes precedence.
 *
 * @param orderCustomDataRpc The order custom data from the RPC context.
 * @param orderCustomDataParam The order custom data from the parameter.
 *
 * @example
 * ```typescript
 * const orderCustomDataRpc = {
 *   orderId: '1',
 * }
 * const orderCustomDataParam = {
 *   orderId: '2',
 * }
 * const mergedOrderCustomData = mergeOrderCustomData(orderCustomDataRpc, orderCustomDataParam) // { orderId: '2' }
 *
 * const orderCustomDataRpc = {
 *   orderId: '1',
 * }
 * const orderCustomDataParam = undefined
 * const mergedOrderCustomData = mergeOrderCustomData(orderCustomDataRpc, orderCustomDataParam) // { orderId: '1' }
 *
 * const orderCustomDataRpc = undefined
 * const orderCustomDataParam = {
 *   orderId: '2',
 * }
 * const mergedOrderCustomData = mergeOrderCustomData(orderCustomDataRpc, orderCustomDataParam) // { orderId: '2' }
 *
 * const orderCustomDataRpc = {
 *   orderId: '1',
 * }
 * const orderCustomDataParam = {
 *   orderName: 'Order 2',
 * }
 * const mergedOrderCustomData = mergeOrderCustomData(orderCustomDataRpc, orderCustomDataParam) // { orderId: '1', orderName: 'Order 2' }
 * ```
 *
 * @returns The merged order custom data.
 */
export declare const mergeOrderCustomData: (orderCustomDataRpc?: Record<string, unknown>, orderCustomDataParam?: Record<string, unknown>) => Record<string, unknown>;