export declare const EMPTY_SELECT_OPTION_SENTINEL = "__rb:empty__";
type OptionLike = {
    value: string;
};
export declare function hasEmptyOption(options: readonly OptionLike[]): boolean;
export declare function mapOptionValueForSelect(optionValue: string, allowEmptyOption: boolean): string;
export declare function mapCurrentValueForSelect(value: string | null | undefined, allowEmptyOption: boolean): string | undefined;
export declare function unmapValueFromSelect(value: string, allowEmptyOption: boolean): string;
export {};
