import { Action } from '@ngrx/store';
import { IStorageSyncOptions } from './storage-sync-options';
/**
 * The StorageSync Meta Reducer for @ngrx/store.
 *
 * @param options The configuration for the meta reducer
 *
 * Check out github for more information.
 * @see https://github.com/larscom/ngrx-store-storagesync
 *
 * @returns the meta reducer function
 */
export declare const storageSync: <T>(options: IStorageSyncOptions<T>) => (reducer: (state: T | undefined, action: Action) => T) => ((state: T | undefined, action: Action) => T);