import { UnaryFunction } from 'rxjs';
import { UrlConfigState } from './url.config.state';
export declare const selectIsPreviewMode: UnaryFunction<UrlConfigState, boolean>;
export declare const selectApiUrl: UnaryFunction<UrlConfigState, URL>;
export declare const selectResourceUrl: UnaryFunction<UrlConfigState, URL>;
/**
 * Tests if an object is a valid {@link UrlConfigState} object
 *
 * @param aState - the object to test
 * @returns true if the state is valid else false
 */
export declare function isValidUrlConfig(aState: any): aState is UrlConfigState;