export interface State {
    width: number;
    selected: number | string;
    active: boolean;
}
type Action = {
    type: string;
    payload?: any;
};
export declare const init: (defaultValue: any) => {
    width: number;
    selected: any;
    active: boolean;
};
export declare function reducer(state: State, { type, payload }: Action): State;
export {};