import { BaseWidget } from '../base-widget';
import { NgAisInstantSearch } from '../instantsearch/instantsearch';
import { NgAisIndex } from '../index-widget/index-widget';
export declare type BreadcrumbState = {
    createURL: (value: string) => string;
    items: BreadcrumbItem[];
    refine: (value: string) => void;
};
export declare type BreadcrumbItem = {
    name: string;
    value: string;
};
export declare class NgAisBreadcrumb extends BaseWidget {
    parentIndex: NgAisIndex;
    instantSearchInstance: NgAisInstantSearch;
    attributes: string[];
    rootPath?: string;
    separator?: string;
    transformItems?: <U extends BreadcrumbItem>(items: BreadcrumbItem[]) => U[];
    get isHidden(): boolean;
    get items(): {
        separator: boolean;
        isLast: boolean;
        name: string;
        value: string;
    }[];
    state: BreadcrumbState;
    constructor(parentIndex: NgAisIndex, instantSearchInstance: NgAisInstantSearch);
    ngOnInit(): void;
    handleClick(event: MouseEvent, item: BreadcrumbItem): void;
}