import type { IMapChange, INotifyMapChanged } from '../../collections';
import { ValidationTrigger } from './ValidationTrigger';
/**
 * Represents the map changed validation trigger configuration.
 * @template TKey The type of keys the map contains.
 * @template TItem The type of items the map contains.
 * @template TMap The map type that may trigger validations.
 */
export interface IMapChangedValidationTriggerConfig<TKey = unknown, TItem = unknown, TMap extends INotifyMapChanged<TKey, TItem> = INotifyMapChanged<TKey, TItem>> {
    /**
     * Gets the map that may trigger a validation.
     */
    readonly map: TMap;
    /**
     * Optional, a guard method which controls when a validation should be triggered.
     * @param map The map that changed.
     * @param mapChange The map change.
     */
    shouldTriggerValidation?(map: TMap, mapChange: IMapChange<TKey, TItem>): boolean;
}
/**
 * Represents a map changed validation trigger. Whenever the map changes a validation may be triggered.
 * @template TKey The type of keys the map contains.
 * @template TItem The type of items the map contains.
 * @template TMap The map type that may trigger validations.
 */
export declare class MapChangedValidationTrigger<TKey = unknown, TItem = unknown, TMap extends INotifyMapChanged<TKey, TItem> = INotifyMapChanged<TKey, TItem>> extends ValidationTrigger<TMap> {
    private readonly _mapChangedEventHandler;
    /**
     * Initializes a new instance of the {@linkcode MapChangedValidationTrigger} class.
     * @param config The validation trigger config.
     */
    constructor(config: IMapChangedValidationTriggerConfig<TKey, TItem, TMap>);
    /**
     * Subscribes to map changes.
     */
    protected subscribeToTarget(): void;
    /**
     * Unsubscribes from map changes.
     */
    protected unsubscribeFromTarget(): void;
}