/**
 * Gemini API Client - Pure API Client
 * Google Gemini API integration via Generative Language API
 * Project owner: Jason Zhang
 *
 * Architecture: Pure API client following transformer architecture
 * - Zero hardcoding, zero fallback principles
 * - Provider only handles API calls, no format conversion
 * - All transformations handled by transformer layer
 */
import { BaseRequest, BaseResponse, ProviderConfig } from '../../types';
export declare class GeminiClient {
    private config;
    readonly name: string;
    readonly type = "gemini";
    private apiKey;
    private baseUrl;
    private enhancedRateLimitManager?;
    private apiKeys;
    private readonly maxRetries;
    private readonly retryDelay;
    private readonly requestTimeout;
    private genAIClients;
    constructor(config: ProviderConfig, providerId?: string);
    healthCheck(): Promise<boolean>;
    createCompletion(request: BaseRequest): Promise<BaseResponse>;
    streamCompletion(request: BaseRequest): AsyncIterable<any>;
    /**
     * Execute request with retry logic and API key rotation
     */
    private executeWithRetry;
    /**
     * Check if error is retryable
     */
    private isRetryableError;
    /**
     * Wait for retry delay
     */
    private waitForRetry;
    /**
     * 验证请求是否为有效的Gemini格式
     */
    private isValidGeminiRequest;
    private isTransformableRequest;
    /**
     * 构建Gemini API请求格式
     */
    private buildGeminiApiRequest;
    private transformRequestToGemini;
    /**
     * 构建原Gemini响应格式
     */
    private buildGeminiResponse;
    private transformGeminiResponseToAnthropic;
    /**
     * 生成唯一消息ID
     */
    private generateMessageId;
    /**
     * Get API key rotation statistics
     */
    getRotationStats(): any;
}
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