import { StatsAggregatorService } from './stats-aggregator.service';
export declare class PrometheusExporterService {
    private readonly agg;
    constructor(agg: StatsAggregatorService);
    getMetrics(): Promise<string>;
    private isPlainObject;
    private isStatLeaf;
    private toNumericValue;
    private toUnixSeconds;
    private sanitizeSegment;
    private makeMetricName;
}