import { MeasurementPoint, Reporter, Tags } from '../index';
/**
 * It doesn't really report to anywhere, instead it pipes measurement points
 * to another reporter if given, meanwhile keep the recent copy for query.
 */
declare class KeepRecent implements Reporter {
    private readonly next?;
    private points?;
    constructor(next?: Reporter | undefined);
    send(points: MeasurementPoint[]): void;
    /**
     * Only original measurement points can be queried, no accumulation.
     * Which means you have to query with exact tags.
     * The query hasn't been optimized for performance.
     */
    query(name: string, tags: Tags): MeasurementPoint[];
}
export { KeepRecent };