export default class Histogram {
    private _measurement;
    private _callFn;
    private _sample;
    private _min;
    private _max;
    private _count;
    private _sum;
    private _varianceM;
    private _varianceS;
    private _ema;
    private used;
    constructor(opts?: any);
    update(value: number): void;
    percentiles(percentiles: any): {};
    val(): any;
    getMin(): any;
    getMax(): any;
    getSum(): number;
    getCount(): number;
    getEma(): number;
    fullResults(): {
        min: any;
        max: any;
        sum: number;
        variance: number | null;
        mean: number;
        count: number;
        median: any;
        p75: any;
        p95: any;
        p99: any;
        p999: any;
        ema: number;
    };
    _updateMin(value: any): void;
    _updateMax(value: any): void;
    _updateVariance(value: any): any;
    _updateEma(value: any): number | undefined;
    _calculateMean(): number;
    _calculateVariance(): number | null;
    isUsed(): boolean;
}