import { BaseProvider } from './base-provider';
import type { Message, ProviderOptions, ProviderResponse, ProviderChunk, Model, ServiceName } from '../types';
/**
 * Google Gemini API provider implementation
 */
export declare class GoogleProvider extends BaseProvider {
    readonly name: ServiceName;
    readonly supportsThinking = false;
    readonly supportsTools = true;
    readonly supportsVision = true;
    readonly supportsDocuments = true;
    private readonly defaultBaseUrl;
    /**
     * Send a non-streaming request to Google Gemini
     */
    sendRequest(messages: Message[], options: ProviderOptions): Promise<ProviderResponse>;
    /**
     * Send a streaming request to Google Gemini
     */
    sendStreamingRequest(messages: Message[], options: ProviderOptions): AsyncIterable<ProviderChunk>;
    /**
     * Fetch available models from Google
     */
    fetchModels(apiKey?: string): Promise<Model[]>;
    /**
     * Verify connection to Google
     */
    verifyConnection(apiKey?: string): Promise<boolean>;
    /**
     * Build the request body for Google Gemini API
     */
    private buildRequestBody;
    /**
     * Format messages for Google Gemini API
     */
    private formatMessagesForGemini;
    /**
     * Format content for Google Gemini API
     */
    private formatContentForGemini;
    /**
     * Format tools for Google Gemini API
     */
    private formatToolsForGemini;
    /**
     * Parse Google Gemini response
     */
    protected parseResponse(response: unknown): ProviderResponse;
    /**
     * Make HTTP request to Google
     */
    private makeRequest;
    /**
     * Handle error responses from Google
     */
    private handleErrorResponse;
    /**
     * Get API key from environment
     */
    private getApiKeyFromEnv;
}
//# sourceMappingURL=google.d.ts.map