/**
 * @zhin.js/ai - Google Gemini Provider（Nano Banana 文生图）
 * @see https://ai.google.dev/gemini-api/docs/image-generation
 */
import { BaseProvider } from './base.js';
import type { ProviderConfig, ChatCompletionRequest, ChatCompletionResponse, ChatCompletionChunk } from '../types.js';
import { type ImageGenerateRequest, type ImageGenerateResult } from '../image-generation.js';
export interface GoogleConfig extends ProviderConfig {
    /** 默认 https://generativelanguage.googleapis.com/v1beta */
    baseUrl?: string;
}
/**
 * Gemini 文生图（Nano Banana 系列）。
 * 聊天未实现：请用本 driver 仅作 `generate_image` 的 provider_alias。
 */
export declare class GoogleProvider extends BaseProvider {
    name: string;
    models: string[];
    private readonly geminiApiKey?;
    private readonly imageGenerationDefaults;
    protected baseUrl: string;
    constructor(config?: GoogleConfig);
    chat(_request: ChatCompletionRequest): Promise<ChatCompletionResponse>;
    chatStream(_request: ChatCompletionRequest): AsyncIterable<ChatCompletionChunk>;
    listModels(): Promise<string[]>;
    healthCheck(): Promise<boolean>;
    /** Gemini generateContent + IMAGE modality（Nano Banana） */
    generateImage(request: ImageGenerateRequest): Promise<ImageGenerateResult>;
}
//# sourceMappingURL=google.d.ts.map