/**
 * LangSmith Exporter
 * Exports spans to LangSmith observability platform
 */
import type { ExporterHealthStatus, ExportResult, LangSmithExporterConfig, SpanData } from "../../types/index.js";
import { BaseExporter } from "./baseExporter.js";
/**
 * LangSmith exporter for LangChain ecosystem observability
 * Supports runs with proper type mapping
 */
export declare class LangSmithExporter extends BaseExporter {
    private readonly apiKey;
    private readonly projectName;
    private readonly endpoint;
    constructor(config: LangSmithExporterConfig);
    initialize(): Promise<void>;
    exportSpan(span: SpanData): Promise<ExportResult>;
    exportBatch(spans: SpanData[]): Promise<ExportResult>;
    flush(): Promise<void>;
    shutdown(): Promise<void>;
    healthCheck(): Promise<ExporterHealthStatus>;
    /**
     * Verify connectivity to LangSmith API
     */
    protected ping(): Promise<void>;
}