import { Metric } from "./Metric";
import { MetricManager } from "./MetricManager";
export declare abstract class Middleware {
    protected metricManager: MetricManager;
    protected availableMetrics: Metric[];
    protected outputMetrics: Metric[];
    constructor(metricManager: MetricManager, availableMetrics: Metric[]);
    abstract run(metricManager: MetricManager): Promise<void> | void;
}
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