import { StorageInterface } from '../interfaces/storage.interface';
import { SecureStorageConfig } from '../interfaces/config.interface';
/**
 * Vendor.
 */
import { CryptService } from './crypt.service';
import { StorageService } from 'ngx-webstorage-service';
/**
 * RxJS.
 */
import { Observable } from 'rxjs';
export declare class SecureLocalStorageService implements StorageInterface {
    private storage;
    private config;
    private cryptService;
    /**
     * Secure local storage constructor.
     *
     * @param storage
     * @param config
     * @param cryptService
     */
    constructor(storage: StorageService, config: SecureStorageConfig, cryptService: CryptService);
    /**
     * Clean storage.
     *
     * @returns Observable<boolean>
     */
    clean(): Observable<boolean>;
    /**
     * Destroy storage key.
     *
     * @param key
     *
     * @returns Observable<boolean>
     */
    destroy(key: string): Observable<boolean>;
    /**
     * Get storage key value.
     *
     * @param key
     *
     * @returns Observable<string|boolean>
     */
    get(key: string): Observable<string | boolean>;
    /**
     * Check storage has key.
     *
     * @param key
     *
     * @returns Observable<boolean>
     */
    has(key: string): Observable<boolean>;
    /**
     * Put storage.
     *
     * @param key
     * @param value
     *
     * @returns Observable<any>
     */
    put(key: string, value: string): Observable<any>;
}