import { OperatorFunction } from 'rxjs';
import { MaybeAsync } from './types';
export declare function setSkipStorageUpdate(skip: boolean): void;
export declare function getSkipStorageUpdate(): boolean;
export interface PersistStateStorage {
    getItem(key: string): MaybeAsync;
    setItem(key: string, value: any): MaybeAsync;
    clear(): void;
}
export interface PersistStateParams {
    /** The storage key */
    key: string;
    /** Storage strategy to use. This defaults to LocalStorage but you can pass SessionStorage or anything that implements the StorageEngine API. */
    storage: PersistStateStorage;
    /** Custom deserializer. Defaults to JSON.parse */
    deserialize: Function;
    /** Custom serializer, defaults to JSON.stringify */
    serialize: Function;
    /**
     * By default the whole state is saved to storage, use this param to include only the stores you need.
     * Pay attention that you can't use both include and exclude
     */
    include: (string | ((storeName: string) => boolean))[];
    /**
     *  By default the whole state is saved to storage, use this param to exclude stores that you don't need.
     *  Pay attention that you can't use both include and exclude
     */
    exclude: string[];
    preStorageUpdate(storeName: string, state: any): any;
    preStoreUpdate(storeName: string, state: any): any;
    skipStorageUpdate: () => boolean;
    preStorageUpdateOperator: () => OperatorFunction<any, any>;
    /** Whether to persist a dynamic store upon destroy */
    persistOnDestroy: boolean;
}
export declare function persistState(params?: Partial<PersistStateParams>): {
    destroy(): void;
    clear(): void;
    clearStore(storeName?: string): void;
};