import { BaseAuthoringItem, ContentItem } from '@acoustic-content-sdk/api';
import { UnaryFunction } from 'rxjs';
/**
 * Extracts the classification property
 */
export declare const selectClassification: UnaryFunction<BaseAuthoringItem | ContentItem, string>;
/**
 * Constructs a selector that validates that the ID is a delivery ID (not a draft ID) and selects
 * based on that ID from the state
 *
 * @param aId - the ID
 * @returns a selector for that ID based on some state
 */
export declare function selectByDeliveryId<T>(aId?: string): UnaryFunction<Record<string, T>, T>;