import * as _opentelemetry_api from '@opentelemetry/api';
import { Span } from '@opentelemetry/api';
import { BaseTracer, Run } from '@langchain/core/tracers/base';

declare class GenkitTracer extends BaseTracer {
    spans: Record<string, Span>;
    tracer: _opentelemetry_api.Tracer;
    name: "genkit_callback_handler";
    protected persistRun(_run: Run): Promise<void>;
    getParents(run: Run): Run[];
    getBreadcrumbs(run: Run): string;
    private startSpan;
    private endSpan;
    onChainStart(run: Run): void;
    onChainEnd(run: Run): void;
    onChainError(run: Run): void;
    onLLMStart(run: Run): void;
    onLLMEnd(run: Run): void;
    onLLMError(run: Run): void;
    onToolStart(run: Run): void;
    onToolEnd(run: Run): void;
    onToolError(run: Run): void;
    onRetrieverStart(run: Run): void;
    onRetrieverEnd(run: Run): void;
    onRetrieverError(run: Run): void;
    onAgentAction(run: Run): void;
    private maybeFlattenInput;
    private maybeFlattenOutput;
}

export { GenkitTracer };