import type { AggregationMode } from "./trendingUrlState";
export interface EnvelopeBucket {
    avg: [number, number | null];
    min: [number, number | null];
    max: [number, number | null];
}
export declare const reduceEnvelopeBucket: (data: [number, number | null][], startIdx: number, endIdx: number) => EnvelopeBucket;
export declare const reduceBucket: (data: [number, number | null][], startIdx: number, endIdx: number, mode: AggregationMode) => [number, number | null];