import { BaseProvider, type ProviderInfo } from './base.js';
import type { CompletionRequest } from '../types/messages.js';
import type { GoogleProviderConfig } from '../types/config.js';
import type { NexusResponse, NexusStream } from '../types/response.js';
/** Google's Gemini API. */
export declare class GoogleProvider extends BaseProvider {
    /** Always `google`, hosted. */
    readonly info: ProviderInfo;
    private config;
    constructor(config: GoogleProviderConfig);
    /** Runs one completion. */
    complete(request: CompletionRequest): Promise<NexusResponse>;
    /** Streams one completion. */
    stream(request: CompletionRequest): NexusStream;
    private generate;
    private createBody;
    /**
     * Maps portable reasoning controls onto Gemini's thinking budget.
     *
     * Returns undefined when the request says nothing about reasoning, leaving the model's own
     * default in place rather than forcing a budget on it.
     */
    private thinkingConfig;
    private toolConfig;
    private formatMessages;
    private formatParts;
    private formatToolsGoogle;
    /** Reasoning summaries are marked `thought` and are excluded from visible output. */
    private extractText;
    private extractToolCalls;
    private mapFinishReason;
    private extractModel;
    private baseUrl;
    private compact;
}