import { Service, ServiceQuery } from "./service";
import { ServiceDependent } from "./service-dependent";
export declare class ServiceAgent extends ServiceDependent {
    constructor(dependent: ServiceDependent);
    /** Require a service using `this` as the dependent. */
    require<S extends Service, QA extends any[]>(service: ServiceQuery<S, [], QA>): S;
    require<S extends Service, A extends any[], QA extends any[]>(service: ServiceQuery<S, A, QA>, ...arguments_: A): S;
    /** Forgo service that has previously been required using the `require` method. */
    forgo<S extends Service>(service: S): any;
    static use(): ServiceAgent;
    protected toString(): string;
}
export declare function useAgent(dependent?: ServiceDependent, deps?: readonly any[]): ServiceAgent;