import { Reducer, TraversalFunction } from './types';
export declare const nextItem: TraversalFunction;
export declare const prevItem: TraversalFunction;
/**
 * Checks if given item can be highlighted
 */
export declare const canHighlightItem: (item?: HTMLElement | null | undefined) => boolean;
/**
 * https://github.com/mui-org/material-ui/blob/master/packages/material-ui/src/MenuList/MenuList.js
 * Get index of next element which is not disabled
 */
export declare const getNextItemIndexToHighlight: (highlightedItem: HTMLElement | null, parentContainer: HTMLElement, traversalFunction: TraversalFunction) => HTMLElement | null;
export declare const getFirstHighlightableElement: (listItemsContainerRef: HTMLElement) => {
    firstHighlightableItem: HTMLElement | null;
    firstSelectedItem: HTMLElement | null;
};
declare const getNextHighlightedItem: (event: KeyboardEvent, highlightedItem: HTMLElement | null, parentContainer: HTMLElement) => HTMLElement | null;
export declare const defaultReducer: Reducer;
export { getNextHighlightedItem };