/**
 * Langfuse Observability Adapter
 * Integrates with Langfuse for production observability
 */
import type { ObservabilityAdapter, TraceContext, SpanContext, SpanKind, SpanStatus, AttributionContext, ObservabilityToolConfig } from '../../types';
/**
 * Langfuse Observability Adapter
 * Wraps Langfuse SDK for trace/span management
 */
export declare class LangfuseObservabilityAdapter implements ObservabilityAdapter {
    readonly name = "langfuse";
    readonly isEnabled = true;
    private client;
    private memory;
    private config;
    private traces;
    private spans;
    constructor(config?: ObservabilityToolConfig);
    initialize(): Promise<void>;
    shutdown(): Promise<void>;
    startTrace(name: string, metadata?: Record<string, unknown>, attribution?: AttributionContext): TraceContext;
    endTrace(traceId: string, status?: SpanStatus): void;
    startSpan(traceId: string, name: string, kind: SpanKind, parentId?: string): SpanContext;
    endSpan(spanId: string, status?: SpanStatus, attributes?: Record<string, unknown>): void;
    addEvent(spanId: string, name: string, attributes?: Record<string, unknown>): void;
    recordError(spanId: string, error: Error): void;
    flush(): Promise<void>;
}