/**
 * Storage
 */
export default class DB {
    defaultConfigs: any;
    /**
     * the storage lib interact with localStorage now
     * @param defaultConfigs - define what will you get when you require an key not exist
     */
    constructor(defaultConfigs: any);
    /**
     * get val by key
     * @param key - will be assembled to eosplayer::${key}
     * @return {*}
     */
    get(key: string): any;
    /**
     * set value
     * @param key
     * @param val
     */
    set(key: string, val: any): void;
}