import type { Labels } from './metrics-counter.js';
export declare const DEFAULT_BUCKETS: number[];
export interface HistogramSnapshot {
    count: number;
    sum: number;
    cumulativeCounts: number[];
    buckets: number[];
}
export declare class Histogram {
    readonly name: string;
    readonly help: string;
    readonly buckets: number[];
    private readonly isEnabled;
    private series;
    constructor(name: string, help: string, buckets?: number[], isEnabled?: () => boolean);
    observe(labels: Labels, value: number): void;
    snapshot(labels: Labels): HistogramSnapshot;
}
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