import { IDropdownOption } from './Dropdown';
export declare function selectDown(options: IDropdownOption[], multiple: boolean): {
    addedOption: IDropdownOption;
    index: number;
};
export declare function selectUp(options: IDropdownOption[], multiple: boolean): {
    addedOption: IDropdownOption;
    index: number;
};
export declare function copyOptions(options: IDropdownOption[]): IDropdownOption[];
export declare function selectSingle(options: IDropdownOption[], selectedOption: IDropdownOption): IDropdownOption[];