import { CustomMapping } from './customLocaleMapping';
/**
 * Resolves the alias locale for a given locale.
 * @param locale - The locale to resolve the alias locale for
 * @param customMapping - The custom mapping to use for resolving the alias locale
 * @returns The configured alias for a canonical locale, or the input locale when already an alias or no alias mapping exists.
 */
export declare function _resolveAliasLocale(locale: string, customMapping?: CustomMapping): string;