import { TemplateRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare const enum PortalSourceActionType {
    Added = 0,
    Removed = 1
}
export declare class PortalSourceAction {
    type: PortalSourceActionType;
    key: string;
    constructor(type: PortalSourceActionType, key: string);
}
export declare class PortalHubService {
    private templateSourceSubject;
    private templateSourceHub;
    constructor();
    getTemplate$(key: string): import("rxjs").Observable<TemplateRef<any>>;
    registerTemplate(key: string, templateRef: TemplateRef<any>): void;
    unregisterTemplate(key: string): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<PortalHubService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<PortalHubService>;
}