/**
 * Display metadata for a `TimeRange` — keeps chart labels, sparkline bucket
 * counts, and x-axis date formatting in sync with the server-side bucketing
 * defined in `aggregator.ts`.
 */
import type { TimeRange } from "../types";
export interface RangeMeta {
    /** Human label used in chart subtitles ("the last 24 hours"). */
    windowLabel: string;
    /** Short prefix used in compact column headers ("24h Trend"). */
    trendLabel: string;
    /** Bucket size matching the server query for this range. */
    bucketMs: number;
    /** Number of buckets the server is expected to return for this range. */
    bucketCount: number;
    /** date-fns format string for x-axis labels and tooltip headings. */
    tickFormat: string;
}
export declare function rangeMeta(range: TimeRange): RangeMeta;
/** Format a bucket timestamp using the active range's tick format. */
export declare function formatRangeTick(timestamp: number, range: TimeRange): string;