import { Logger } from 'n8n-workflow';
export declare class DataCache {
    cache: Map<string, {
        buffer: Uint8Array[];
        trace_id: string;
        message_id: string;
        create_time: number;
    }>;
    logger?: Logger;
    constructor(params: {
        logger?: Logger;
    });
    mergeData(params: {
        message_id: string;
        sum: number;
        seq: number;
        trace_id: string;
        data: Uint8Array;
    }): any;
    private deleteCache;
    private clearAtInterval;
    clear(): void;
}