import { DataProvider } from '../../domain/repositories/DataProvider.js';
import { PostalCodeData } from '../../types.js';
/**
 * A DataProvider implementation that loads data from the internal TypeScript files.
 * Optimized with an LRU (Least Recently Used) cache and TTL (Time To Live).
 */
export declare class TsDataProvider implements DataProvider {
    private cache;
    private provinceLoadPromises;
    private readonly ttl;
    private readonly maxCacheSize;
    constructor(options?: {
        ttl?: number;
        maxCacheSize?: number;
    });
    /**
     * Cleans up expired entries and ensures cache size is within limits (LRU).
     */
    private maintainCache;
    getByProvince(provinceCode: string): Promise<PostalCodeData[]>;
    getAll(): Promise<PostalCodeData[]>;
    clearCache(): void;
}
//# sourceMappingURL=TsDataProvider.d.ts.map