import { Observable } from 'rxjs';
import { BreakpointObserver } from '@angular/cdk/layout';
import * as i0 from "@angular/core";
export declare class ValueService {
    private breakpointObserver;
    constructor(breakpointObserver: BreakpointObserver);
    isXSmall$: Observable<boolean>;
    isLtMedium$: Observable<boolean>;
    static ɵfac: i0.ɵɵFactoryDeclaration<ValueService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ValueService>;
}