import { conversion, Req } from "@huz-com/types";
import { AbstractSingularSync } from "../abstract/AbstractSingularSync";
declare type R = boolean;
declare type ANY = R;
export declare class CallbackEmpty extends AbstractSingularSync<ANY> {
    private static _ins;
    static ins(): CallbackEmpty;
    constructor();
    run<T extends ANY = R>(clazz: string, value: unknown, opt?: conversion.CastBase, req?: Req): T;
}
export {};