import { CacheService } from './cache.js';
import { LocationResult, OneMapSearchResult } from '../types/location.js';
interface OneMapServiceInterface {
    geocodeWithAuth(query: string): Promise<OneMapSearchResult[]>;
}
export declare class PostalCodeService {
    private oneMapService;
    private cache?;
    constructor(oneMapService: OneMapServiceInterface, cache?: CacheService | undefined);
    isValidSingaporePostalCode(code: string): boolean;
    extractPostalCodeFromText(text: string): string | null;
    getLocationFromPostalCode(postalCode: string): Promise<LocationResult | null>;
    validateAndResolvePostalCode(input: string): Promise<LocationResult | null>;
    private convertToLocationResult;
    getDistrictFromPostalCode(postalCode: string): string | null;
    isInArea(postalCode: string, area: string): boolean;
    getAreaType(postalCode: string): string | null;
}
export {};