export declare function getSupportedLanguages(): Promise<Set<string>>;
/**
 * Fetch and merge the Appsemble core messages based on a language and a base language.
 *
 * @param language The language to get the messages of.
 * @param baseLanguage The base language of the language to get the messages of.
 * @returns The Appsemble core messages.
 */
export declare function getAppsembleMessages(language: string, baseLanguage?: string): Promise<Record<string, string>>;