import type { ChartUnit } from '../../../types/chart-unit.js';
import { Formatter, TimeFormatter } from '../../../types/formatter.js';
import type { Point } from '../../../types/point.js';
import { AnyScale } from '../../../types/scales.js';
export type MagnifierFormatter = Formatter | TimeFormatter;
export declare function getMagnifierLabel(unit: ChartUnit, coordinate: 'y' | 'x', formatter: MagnifierFormatter, mousePosition?: Point, scale?: AnyScale): string | undefined;