import { Observable } from 'rxjs';
/**
 * Storage interface.
 */
export interface StorageInterface {
    /**
     * Put storage.
     *
     * @param key
     * @param value
     *
     * @returns Observable<any>
     */
    put(key: string, value: string): Observable<any>;
    /**
     * Check storage has key.
     *
     * @param key
     *
     * @returns Observable<boolean>
     */
    has(key: string): Observable<boolean>;
    /**
     * Get storage key value.
     *
     * @param key
     *
     * @returns Observable<string|boolean>
     */
    get(key: string): Observable<string | boolean>;
    /**
     * Destroy storage key.
     *
     * @param key
     *
     * @returns Observable<boolean>
     */
    destroy(key: string): Observable<boolean>;
    /**
     * Clean storage.
     *
     * @returns Observable<boolean>
     */
    clean(): Observable<boolean>;
}