import type { AsyncStorage } from 'oidc-client-ts';
/**
 * @internal
 */
export declare class MobileStorage implements AsyncStorage {
    constructor();
    get length(): Promise<number>;
    key(index: number): Promise<string | null>;
    clear(): Promise<void>;
    getItem(key: string): Promise<string | null>;
    setItem(key: string, value: string): Promise<void>;
    removeItem(key: string): Promise<void>;
}