import { PersistentStorage } from '../types';
export declare class MMKVWrapper implements PersistentStorage<string | null> {
    protected storage: MMKVInterface;
    constructor(storage: MMKVInterface);
    getItem(key: string): string | null;
    removeItem(key: string): void;
    setItem(key: string, value: string | null): void;
}
interface MMKVInterface {
    set: (key: string, value: boolean | string | number) => void;
    getString: (key: string) => string | undefined;
    delete: (key: string) => void;
}
export {};