import { OnDestroy } from '@angular/core';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class WindowService implements OnDestroy {
    private bodyClassChanged$;
    private observer;
    get nativeWindow(): Window;
    get bodyClass$(): Observable<DOMTokenList>;
    observeBody(): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<WindowService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<WindowService>;
}