import { LogEntry, LogMiddleware, MiddlewareContext } from '../types';
export declare class CorrelationIdMiddleware implements LogMiddleware {
    private options;
    readonly name = "CorrelationIdMiddleware";
    private correlationId;
    constructor(options?: {
        idLength?: number;
        fieldName?: string;
        generateNew?: boolean;
    });
    private generateCorrelationId;
    execute(entry: LogEntry, context: MiddlewareContext, next: () => Promise<void> | void): Promise<void>;
    setCorrelationId(id: string): void;
    getCorrelationId(): string;
}