import { PersistentStorage } from '../types';
export declare class MMKVStorageWrapper implements PersistentStorage<string | null> {
    protected storage: MMKVStorageInterface;
    constructor(storage: MMKVStorageInterface);
    getItem(key: string): Promise<string | null>;
    removeItem(key: string): Promise<void>;
    setItem(key: string, value: string | null): Promise<void>;
}
interface MMKVStorageInterface {
    getItem(key: string): Promise<string | null | undefined>;
    setItem(key: string, value: string): Promise<boolean | undefined>;
    removeItem(key: string): boolean | undefined | Promise<boolean | undefined>;
}
export {};