import { CryptoJsService } from './crypto-js.service';
import * as i0 from "@angular/core";
/**
 * Service for managing data saved into local storage.
 */
export declare class LocalStorageService {
    protected cryptoService: CryptoJsService;
    /**
     * Event for set data on local storage
     */
    private onSet;
    /**
     * Event for remove data on local storage
     */
    private onRemove;
    /**
     * Event for clear on local storage
     */
    private onClear;
    /**
     * On set observable
     * @return onSet subject observable
     */
    get onSet$(): import("rxjs").Observable<LocalStorageEvent>;
    /**
     * On remove observable
     * @return onRemove subject observable
     */
    get onRemove$(): import("rxjs").Observable<any>;
    /**
     * On clear observable
     * @return onClear subject observable
     */
    get onClear$(): import("rxjs").Observable<any>;
    /**
     * Set a new key on LocalStorage
     * @param key - string
     * @param value - string
     * @return LocalStorageService
     */
    set(key: string, value: any): this;
    /**
     * Update date of current object qualified by the key
     * @param key - string
     * @return LocalStorageService;
     */
    updateDate(key: string): this;
    /**
     * Return the status of current object qualified by the key
     * @param key - string
     * @param seconds - number of seconds session expired
     * @return boolean
     */
    isExpired(key: string, seconds: number): boolean;
    /**
     * Return JSON content of the LocaleStorage
     * @param key - string
     * @param field - string (default: data)
     * @return JSON
     */
    get(key: string, field?: string): any;
    /**
     * Remove a key of LocaleStorage
     * @param key - string
     * @return LocalStorageService
     */
    remove(key: string): this;
    /**
     * Clear LocaleStorage
     * @return LocalStorageService
     */
    clear(): this;
    /**
     * has key in LocaleStorage
     * @param key - string
     * @return Boolean
     */
    has(key: string): boolean;
    /**
     * Get local storage with the key
     * @param key - string
     */
    private getItem;
    /**
     * Return keys of LocaleStorage
     * @return array
     */
    private keys;
    static ɵfac: i0.ɵɵFactoryDeclaration<LocalStorageService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LocalStorageService>;
}
/**
 * LocalStorageEvent interface
 */
export interface LocalStorageEvent {
    key: string;
    data: any;
}