import type { UmbValidationController } from './validation.controller.js';
import { UmbControllerBase } from '../../../../libs/class-api/index.js';
import type { UmbControllerAlias, UmbControllerHost } from '../../../../libs/controller-api/index.js';
import type { Observable } from '../../../../libs/observable-api/index.js';
/**
 * A method resolving the validation data path of a given item.
 * The path must be a stable identity for the item — it must not change while the item is still present,
 * otherwise it would look like the item was removed and a new one added in its place.
 * Return undefined for items that should be ignored entirely.
 */
export type UmbValidationCleanUpByDataPathDataPathResolver<ItemType> = (item: ItemType) => string | undefined;
/**
 * Removes the validation messages of items that disappear from an observed array of items.
 *
 * Each item is identified by the validation data path returned for it by `dataPathResolver`. When an item
 * that was previously present stops being present, the messages at its data path — and at any descendant
 * path — are removed from the given Validation Context. Meaning anything nested inside a removed item's
 * data (e.g. a Block nested inside a removed Block) goes away with it.
 *
 * Notice the first emission of the observed array only establishes the baseline, as it can not be known
 * what was removed before this manager began observing.
 * @example
 * ```ts
 * new UmbValidationCleanUpByPathManager<PropertyEditorSettingsProperty>(
 * 	this,
 * 	this.validationContext,
 * 	this.properties,
 * 	(property) => `$.values[${UmbDataPathPropertyValueQuery(property)}]`,
 * );
 * ```
 */
export declare class UmbValidationCleanUpByPathManager<ItemType = unknown> extends UmbControllerBase {
    #private;
    /**
     * Creates an instance of UmbValidationCleanUpByPathManager.
     * @param {UmbControllerHost} host - The host of this controller.
     * @param {UmbValidationController} validationController - The Validation Context to remove messages from.
     * @param {Observable<Array<ItemType> | undefined>} items - An Observable of the items to observe for removals.
     * @param {UmbValidationCleanUpByDataPathDataPathResolver<ItemType>} dataPathResolver - Resolves the validation data path of a given item.
     * @param {UmbControllerAlias} [controllerAlias] - An optional controller alias, enables replacing this manager with a new one.
     */
    constructor(host: UmbControllerHost, validationController: UmbValidationController, items: Observable<Array<ItemType> | undefined>, dataPathResolver: UmbValidationCleanUpByDataPathDataPathResolver<ItemType>, controllerAlias?: UmbControllerAlias);
    destroy(): void;
}