import type { I18nConfig, LocaleDefinition } from './types.js';
/**
 * Returns all configured locale codes.
 */
export declare function getLocaleCodes(config: I18nConfig): string[];
/**
 * Returns the default locale code.
 */
export declare function getDefaultLocale(config: I18nConfig): string;
/**
 * Checks if a string is a valid configured locale code.
 */
export declare function isValidLocale(code: string, config: I18nConfig): boolean;
/**
 * Returns the full locale definition for a given code, or undefined if not found.
 */
export declare function getLocaleDefinition(code: string, config: I18nConfig): LocaleDefinition | undefined;