import { Middleware } from './Middleware';
import { Handler } from './Handler';
import { Namespace } from 'cls-hooked';
export declare const CORRELATION_ID = "CORRELATION_ID";
export declare class TransactionMiddleware implements Middleware {
    readonly ns: Namespace;
    constructor(ns: Namespace);
    handle: Handler;
    getCorrelationId: () => string;
}
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