import { Observable } from 'rxjs';
import { SafeAny } from '@pkt/utils';
import * as i0 from "@angular/core";
/** Allows to apply themes **/
export declare class ThemeService<T = SafeAny> {
    private readonly document;
    /** Applied theme */
    get applied$(): Observable<T>;
    /** Applied theme */
    get applied(): T;
    private themeLinkElement;
    private _applied$;
    constructor(document: Document);
    /** Applies theme */
    apply(themeName: T): void;
    private initThemeLinkElement;
    static ɵfac: i0.ɵɵFactoryDeclaration<ThemeService<any>, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ThemeService<any>>;
}