interface useLocalStorageReducerOptions<T> {
    initialState?: T;
    sync?: boolean;
}
export declare type LocalStorageReducer<T> = (state: T, action: any) => T;
/**
 * An alternative hook to `useLocalStorageState` for managing complex state.
 *
 * @param key key for localStorage
 * @param reducer reducer method that returns new state
 * @param opts Options object
 * @returns a pair of current state and dispatch method to dispatch actions
 */
declare function useLocalStorageReducer<T>(key: string, reducer: LocalStorageReducer<T>, opts?: useLocalStorageReducerOptions<T>): readonly [T, (action: any) => void];
export default useLocalStorageReducer;