import type { Request, RequestHandler } from 'express';
export declare const generateRequestId: () => string;
export declare const requestIdMiddleware: () => RequestHandler;
export declare const extractRequestId: (req: Request) => string | undefined;
export declare const extractWebSocketRequestId: (headers: Record<string, string>) => string;
interface GrpcMetadata {
    get(key: string): string[] | undefined;
}
export declare const extractGrpcRequestId: (metadata: GrpcMetadata) => string;
export {};
//# sourceMappingURL=request-id.d.ts.map