/**
 * Country Data Loader
 *
 * Loads country data with government characteristics and WGI metrics
 *
 * @module data/loadCountries
 */
import { GovernmentType } from '../core/GovernmentType';
import { StateCapacityMetrics } from '../core/StateCapacity';
/**
 * Country data structure
 */
export interface CountryData {
    /** Country name */
    name: string;
    /** Government type */
    type: GovernmentType;
    /** Population (millions) */
    population: number;
    /** GDP PPP (billions USD) */
    gdpPPP: number;
    /** World Governance Indicators (2024) */
    wgi: StateCapacityMetrics;
}
/**
 * Load all country data
 *
 * @returns Map of country codes to country data
 */
export declare function loadCountries(): Map<string, CountryData>;
/**
 * Load a specific country's data
 *
 * @param countryCode - ISO 3166-1 alpha-3 country code
 * @returns Country data or undefined if not found
 */
export declare function loadCountry(countryCode: string): CountryData | undefined;
/**
 * Get list of all country codes
 */
export declare function getCountryCodes(): string[];
/**
 * Get list of all country names
 */
export declare function getCountryNames(): string[];
/**
 * Get countries by government type
 */
export declare function getCountriesByType(type: GovernmentType): Map<string, CountryData>;
/**
 * Get countries sorted by GDP PPP (descending)
 */
export declare function getCountriesByGDP(): Array<[string, CountryData]>;
/**
 * Get countries sorted by state capacity (descending)
 */
export declare function getCountriesByStateCapacity(): Array<[string, CountryData]>;