import type { ITranslate } from "./translate.interface.js";
export declare class DeepLTranslate implements ITranslate {
    private subscriptionKey;
    private type;
    private endpoint;
    constructor(subscriptionKey: string, type: "free" | "pro");
    isValidLocale(targetLocale: string): boolean;
    translateText(text: string, sourceLocale: string, targetLocale: string): Promise<string>;
}