import { DataCacher, IDataHook, IDataRetriever } from "model-react";
import { ICategory } from "../../actions/types/category/_types/ICategory";
import { IMenuItem } from "../items/_types/IMenuItem";
import { ICategorizerConfig } from "./_types/ICategorizerConfig";
import { IMenuCategoryData } from "./_types/IMenuCategoryData";
/**
 * A class that can be used to categorize a list of menu items
 */
export declare class MenuItemCategorizer<T> {
    protected itemsGetter: IDataRetriever<T[]>;
    protected config: Required<ICategorizerConfig<T>>;
    /**
     * Creates a new categorizer
     * @param items The items getter
     * @param config The config to customize the categories
     */
    constructor(items: IDataRetriever<T[]>, config: ICategorizerConfig<T>);
    /**
     * The items together with a function to retrieve their category, caching the category for future use
     */
    protected itemsWithCategories: DataCacher<{
        items: {
            item: T;
            categoryGetter: DataCacher<ICategory | undefined>;
        }[];
        categories: Map<T, DataCacher<ICategory | undefined>>;
    }>;
    /**
     * The categories data
     */
    protected categories: DataCacher<IMenuCategoryData[]>;
    /**
     * The menu items
     */
    protected items: DataCacher<IMenuItem[]>;
    /**
     * Retrieves the item categories of the menu
     * @param hook The hook to subscribe to changes
     * @returns The categories and their items
     */
    getCategories(hook?: IDataHook): IMenuCategoryData[];
    /**
     * Retrieves the items including categories
     * @param hook The hook to subscribe to changes
     * @returns The menu items
     */
    getItems(hook?: IDataHook): IMenuItem[];
}
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