export declare class StatTracker {
    private count;
    private minVal;
    private maxVal;
    private mean;
    private p50;
    private p95;
    add(x: number): void;
    snapshot(): {
        min: number;
        max: number;
        avg: number;
        median: number;
        p95: number;
        count: number;
    };
    get hasData(): boolean;
}