import { Request, Response, NextFunction } from 'express';
import { TracekitClient } from '../client';
import { SnapshotClient } from '../snapshot-client';
import * as api from '@opentelemetry/api';
export declare function createExpressMiddleware(client: TracekitClient, snapshotClient?: SnapshotClient): (req: Request, res: Response, next: NextFunction) => Promise<void>;
export declare function getCurrentSpan(req: Request): api.Span | null;
export declare function getRequestContext(): Record<string, any> | undefined;
export declare function getClientIp(req: Request): string;
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