export declare type State = {
    highlightedIndex: number;
    open: boolean;
};
export declare enum ActionType {
    OPEN = "OPEN",
    CLOSE = "CLOSE",
    HIGHLIGHT = "HIGHLIGHT"
}
declare type OpenAction = {
    type: ActionType.OPEN;
    payload: {
        selectedOptionIndex: number;
    };
};
declare type CloseAction = {
    type: ActionType.CLOSE;
};
declare type HightlightAction = {
    type: ActionType.HIGHLIGHT;
    payload: {
        index: number;
    };
};
export declare type Action = OpenAction | CloseAction | HightlightAction;
export declare function reducer(state: State, action: Action): State;
export {};