import type { NumberValue } from 'd3-scale';
import type { AnyScale } from '../types/scales.js';
/**
 * Minimum pixel gap required between adjacent tick labels.
 *
 * Lower values keep more ticks visible at the risk of labels almost touching;
 * higher values trigger reduction sooner and leave more whitespace. ~6px keeps
 * the gap visually clear while avoiding asymmetric drops between sibling
 * charts whose labels differ only by a few pixels (e.g. a leading "-").
 */
export declare const TICK_LABEL_GAP_PX = 6;
export type ContinuousScale = Exclude<AnyScale, {
    bandwidth: () => number;
}>;
/**
 * Detects whether any two adjacent formatted tick labels would visually
 * overlap on a horizontal axis.
 *
 * When `domainBounds` is provided the function uses domain-aware alignment —
 * the same logic as `getBottomTickLabelPropsWithDomainAlignment` (AC1):
 * - tick value === domainBounds[0] → `start`  (label extends right of position)
 * - tick value === domainBounds[1] → `end`    (label extends left of position)
 * - anything else                 → `middle`  (label centered on position)
 *
 * When `domainBounds` is omitted the function falls back to the legacy
 * index-based behaviour (first=start, last=end, others=middle), which is
 * kept for callers that have not been migrated yet.
 */
export declare function hasHorizontalLabelCollision(formattedTicks: string[], rawTicks: NumberValue[], scale: ContinuousScale, domainBounds?: [number, number]): boolean;