type Changes<Item> = {
    isOpen: boolean;
    highlightedIndex: number;
    selectedItem?: Item;
    inputValue?: string;
};
/**
 * Handles selection on Enter / Alt + ArrowUp. Closes the menu and resets the highlighted index, unless there is a highlighted.
 * In that case, selects the item and resets to defaults for open state and highlighted idex.
 *
 * @param props The Dropdown props.
 * @param highlightedIndex The index from the state.
 * @param inputValue Also return the input value for state.
 * @returns The changes for the state.
 */
export declare function getChangesOnSelection<Item>(items: Item[], itemToString: (item: Item | null) => string, defaultIsOpen: boolean | undefined, defaultHighlightedIndex: number | undefined, highlightedIndex: number, inputValue?: boolean): Changes<Item>;
export {};