import { WtSafeAny } from 'ngx-wonton/core/types';
import * as i0 from "@angular/core";
export declare class WtSingletonService {
    private get singletonRegistry();
    /**
     * This registry is used to register singleton in dev mode.
     * So that singletons get destroyed when hot module reload happens.
     *
     * This works in prod mode too but with no specific effect.
     */
    private _singletonRegistry;
    registerSingletonWithKey(key: string, target: WtSafeAny): void;
    getSingletonWithKey<T>(key: string): T | null;
    private withNewTarget;
    static ɵfac: i0.ɵɵFactoryDeclaration<WtSingletonService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<WtSingletonService>;
}