import { Observable } from "rxjs";
import { TabDirective } from "./tab.directive";
import * as i0 from "@angular/core";
export declare class TabsService {
    private _activeChange;
    activeChange: Observable<TabDirective>;
    notifyActiveChange(tab: TabDirective): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TabsService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<TabsService>;
}