/**
 * OpenKernel — Gemini Provider
 *
 * Google Generative Language API (Gemini family).
 * Implements the kernel's ProviderInterface against
 *   https://generativelanguage.googleapis.com/v1beta/models/{model}:generateContent
 *   ...:streamGenerateContent
 *
 * Distinct from OpenAICompatibleProvider because Gemini's request/response
 * shapes (contents/parts, safety ratings, candidate counts) differ materially.
 */
import type { CompletionChunk, CompletionRequest, CompletionResult, ProviderCapabilities, ProviderInfo, ProviderInterface, ProviderModel } from '../types.js';
export interface GeminiProviderOptions {
    id?: string;
    name?: string;
    apiKey: string;
    /** Base URL without trailing slash. */
    baseURL?: string;
    timeoutMs?: number;
    knownModels?: Array<Partial<ProviderModel> & {
        id: string;
    }>;
}
export declare class GeminiProvider implements ProviderInterface {
    info: ProviderInfo;
    private apiKey;
    private baseURL;
    private timeoutMs;
    private knownModels;
    constructor(options: GeminiProviderOptions);
    capabilities(): Promise<ProviderCapabilities>;
    complete(request: CompletionRequest): Promise<CompletionResult>;
    completeStream(request: CompletionRequest): AsyncIterable<CompletionChunk>;
    refresh(): Promise<void>;
    verify(): Promise<{
        ok: boolean;
        latencyMs: number;
        error?: string;
    }>;
    private buildBody;
    private fetchModels;
    private toProviderModel;
}