/**
 * LLM Provider 抽象基类
 * 提供重试逻辑和通用错误处理
 */
import type { ILLMProvider, ChatMessage, LLMRequestConfig, LLMResponse, LLMProviderType } from "./types.js";
/** 重试配置 */
interface RetryConfig {
    maxRetries: number;
    baseDelayMs: number;
    maxDelayMs: number;
}
export declare abstract class BaseLLMProvider implements ILLMProvider {
    abstract readonly name: LLMProviderType;
    protected retryConfig: RetryConfig;
    constructor(retryConfig?: Partial<RetryConfig>);
    abstract isConfigured(): boolean;
    protected abstract doChat(messages: ChatMessage[], config?: LLMRequestConfig): Promise<LLMResponse>;
    /**
     * 带重试的聊天请求
     */
    chat(messages: ChatMessage[], config?: LLMRequestConfig): Promise<LLMResponse>;
    /** 判断是否为不可重试的错误 */
    protected isNonRetryableError(error: Error): boolean;
    protected sleep(ms: number): Promise<void>;
}
export {};
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