/**
 * Geographic region utilities for filtering products by world regions.
 *
 * Regions follow the UN geoscheme (M49) standard:
 * - af: Africa
 * - an: Antarctica
 * - as: Asia
 * - eu: Europe
 * - na: North America
 * - oc: Oceania
 * - sa: South America
 * - me: Middle East (custom, subset of Asia/Africa)
 */
/**
 * Geographic region codes
 */
export type GeographicRegionCode = "af" | "an" | "as" | "eu" | "na" | "oc" | "sa" | "me";
/**
 * Geographic region metadata
 */
export interface GeographicRegion {
    code: GeographicRegionCode;
    name: string;
}
/**
 * All available geographic regions
 */
export declare const GEOGRAPHIC_REGIONS: GeographicRegion[];
/**
 * Get the geographic region for a country code.
 *
 * @param countryCode - ISO 3166-1 alpha-2 country code (e.g., "RO", "EG")
 * @returns Geographic region code or null if not found
 *
 * @example
 * getGeographicRegion("RO") // "eu"
 * getGeographicRegion("EG") // "af"
 * getGeographicRegion("AE") // "me"
 */
export declare function getGeographicRegion(countryCode: string): GeographicRegionCode | null;
/**
 * Get all country codes for a geographic region.
 *
 * @param region - Geographic region code (e.g., "eu", "af")
 * @returns Array of ISO 3166-1 alpha-2 country codes
 *
 * @example
 * getCountriesByRegion("eu") // ["AL", "AD", "AT", ...]
 * getCountriesByRegion("me") // ["BH", "IR", "IQ", ...]
 */
export declare function getCountriesByRegion(region: GeographicRegionCode): string[];
/**
 * Check if a string is a valid geographic region code.
 *
 * @param code - String to check
 * @returns True if the code is a valid region code
 */
export declare function isValidRegionCode(code: string): code is GeographicRegionCode;
/**
 * Get region metadata by code.
 *
 * @param code - Geographic region code
 * @returns Region metadata or null if not found
 */
export declare function getRegionByCode(code: string): GeographicRegion | null;
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