import type { LocalizedStrings } from '../type/LocalizedStrings';
/**
 * Get a localized string
 * @param strings The LocalizedStrings map
 * @param key Key of the string
 * @param defaultString Default unlocalized string, will be used if strings is not specified or the give key doesn't exist in strings
 * @returns A localized string from the string map, or defaultString
 */
export declare function getLocalizedString<T extends string, R extends string | null | undefined>(strings: LocalizedStrings<T> | undefined, key: T, defaultString: R): string | R;