import { OnDestroy, OnInit } from '@angular/core';
import { bem } from './utils';
import { NgAisInstantSearch } from './instantsearch/instantsearch';
import { NgAisIndex } from './index-widget/index-widget';
import { Widget } from 'instantsearch.js/es/types';
export { Widget };
export declare type Connector = (renderFn: (state: object, isFirstRendering: boolean) => void, unmountFn: () => void) => (widgetOptions?: object) => Widget;
export declare abstract class BaseWidget implements OnInit, OnDestroy {
    autoHideContainer?: boolean;
    widget?: Widget;
    state?: object;
    cx: ReturnType<typeof bem>;
    abstract instantSearchInstance: NgAisInstantSearch;
    abstract parentIndex?: NgAisIndex;
    constructor(widgetName: string);
    get parent(): NgAisIndex | NgAisInstantSearch;
    createWidget(connector: Connector, options?: object): void;
    ngOnInit(): void;
    ngOnDestroy(): void;
    updateState: (state: {}, isFirstRendering: boolean) => Promise<void> | void;
    /**
     * Helper to generate class names for an item
     * @param item element to generate a class name for
     */
    getItemClass(item: {
        isRefined?: boolean;
    }): string;
}