import { IDropdownOption } from '@fluentui/react';
import { IDropdownInputOption } from '../SingleValueInputElements';
export declare class DropdownHelper {
    static getNormalizedOptions(defaultOption: IDropdownInputOption, allOptions: IDropdownInputOption[]): IDropdownOption[];
    static toNormalizedDropdownOption: (inputOption: IDropdownInputOption) => IDropdownOption;
    static mapToDropdownOptions(values: string[]): IDropdownInputOption[];
}