import { Faker } from "@faker-js/faker";
import { Observable } from 'rxjs';
export declare class LastNameSelector {
    private readonly faker;
    private readonly REGIONAL_WEIGHT;
    private dataSubject;
    constructor(faker: Faker);
    private loadRegionalData;
    private loadFallbackData;
    private initializeMaps;
    select(options?: {
        region?: string;
        province?: string;
    }): Observable<string>;
    preloadData(): Observable<void>;
    clearCache(): void;
}