import type { Translator } from "./types";
/**
 * @see Translator implementation that uses the Google Translation API.
 * This API requires credentials which must be stored in a file pointed to
 * by the environment variable GOOGLE_APPLICATION_CREDENTIALS.
 */
export declare class GoogleV3Translator implements Translator {
    private credentials;
    private translationClient;
    init(): Promise<void>;
    translate(text: string, targetLang: string): Promise<string>;
}