import { Sys } from "./interfaces/sys.interface";
export declare class SwsSysStats {
    private sys;
    private startTime;
    private startUsage;
    private startTimeAndUsage;
    private promClientMetrics;
    initialize(): void;
    setEventLoopLag(start: [number, number], sys: Sys): void;
    getStats(): Sys;
    tick(): void;
    private calculateSystemStats;
}