import { IComboBoxGroup, IComboBoxItem } from './ComboBox.types';
export declare const handleFilter: (comboBoxGroup: IComboBoxGroup[], inputValue: string) => IComboBoxGroup[];
export declare const searchItem: (key: string, originComboBoxGroups: IComboBoxGroup[]) => IComboBoxItem | undefined;
export declare const getSumScrollTop: (element: Element) => number;