import type { Widgets } from './service';
import type { TWidgetConfigProps } from './types';
export declare class Storage<T extends object = object> {
    private readonly root;
    private readonly namespace;
    readonly rules: TWidgetConfigProps<T>;
    private readonly values;
    constructor(root: Widgets, namespace: string, rules: TWidgetConfigProps<T>);
    private createConfigPath;
    build(): Promise<void>;
    set<U extends keyof T>(name: U, value: T[U]): Promise<this>;
    get<U extends keyof T>(name: U): T[U];
    toJSON(): T;
    save(data: T): Promise<void>;
}