import { StorageUtils } from '@usecapsule/core-sdk';
/**
 * Implements `StorageUtils` using `sessionStorage`.
 *
 * This class will eventually not be exported and should not be used
 * by consumers of the library.
 * @internal
 */
export declare class SessionStorage implements StorageUtils {
    get: (key: string) => string | null;
    set: (key: string, value: string) => void;
    removeItem: (key: string) => void;
    clear: (prefix: string) => void;
}