import { BreakpointObserver } from '@angular/cdk/layout';
import { Observable } from 'rxjs';
export interface ResponsiveOption<T> {
    xs?: T | null;
    sm?: T | null;
    md?: T | null;
    lg?: T | null;
    xl?: T | null;
    xxl?: T | null;
    default: T;
}
export declare class Responsive {
    private observer;
    private observe$;
    constructor(observer: BreakpointObserver);
    resolve<T>(option: ResponsiveOption<T>): Observable<T>;
    private initObserver();
}