export declare class RateLimitError extends Error {
    constructor(provider: string);
}
export interface TranslationProvider {
    name: string;
    supportsLang?(lang: string): boolean;
    translate(text: string, fromLang: string, toLang: string): Promise<string | null>;
}
/** An AI endpoint that takes every target language in one call. */
export interface BatchTranslationProvider {
    name: string;
    translateBatch(text: string, fromLang: string, langCodes: string[]): Promise<Record<string, string>>;
}
export declare class LlamaCppProvider implements TranslationProvider, BatchTranslationProvider {
    readonly name = "llama-cpp";
    private translator;
    constructor(host?: string);
    static create(host?: string): Promise<LlamaCppProvider | null>;
    translate(text: string, fromLang: string, toLang: string): Promise<string | null>;
    /** Single inference → all target langs at once — far fewer GPU cycles than one-per-lang. */
    translateBatch(text: string, fromLang: string, langCodes: string[]): Promise<Record<string, string>>;
}
export declare class MyMemoryProvider implements TranslationProvider {
    readonly name = "MyMemory";
    private readonly email;
    translate(text: string, fromLang: string, toLang: string): Promise<string | null>;
}
export declare class GoogleUnofficialProvider implements TranslationProvider {
    readonly name = "Google";
    translate(text: string, fromLang: string, toLang: string): Promise<string | null>;
}
export declare class ProviderPool {
    private providers;
    private rateLimitUntil;
    private readonly delayMs;
    private readonly logger;
    constructor(options?: {
        delayMs?: number;
        verbose?: boolean;
    });
    private delay;
    private isAvailable;
    private backoff;
    translate(text: string, fromLang: string, toLang: string): Promise<string | null>;
    getStatus(): {
        active: string[];
        rateLimited: string[];
    };
}
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