export interface IStorage {
    get<T = any>(key: string, defaultValue?: T): Promise<T>;
    has(key: string): Promise<boolean>;
    set(key: string, value: any): Promise<void>;
    delete(key: string): Promise<void>;
    clear(): Promise<void>;
}
export interface IStorageSync extends IStorage {
    getSync<T = any>(key: string, defaultValue?: T): T;
    hasSync(key: string): boolean;
    setSync(key: string, value: any): void;
    deleteSync(key: string): void;
    clearSync(): void;
}
/**
 * @class Storage
 */
export declare class Storage implements IStorageSync {
    private m_path;
    private m_prefix;
    private m_change;
    private m_value;
    private m_sync;
    constructor(path?: string);
    get<T = any>(key: string, defaultValue?: T): Promise<any>;
    has(key: string): Promise<boolean>;
    set(key: string, value: any): Promise<void>;
    delete(key: string): Promise<void>;
    clear(): Promise<void>;
    getSync(key: string, defaultValue?: any): any;
    hasSync(key: string): boolean;
    setSync(key: string, value: any): void;
    deleteSync(key: string): void;
    clearSync(): void;
}
declare const _default: {
    readonly shared: IStorageSync;
    setShared: (value: IStorageSync) => void;
    get: (key: string, defaultValue?: any) => any;
    has: (key: string) => boolean;
    set: (key: string, value: any) => void;
    delete: (key: string) => void;
    clear: () => void;
};
export default _default;