import type { ScaleTime } from 'd3-scale';
import type { ChartUnit } from '../../../../core/types/chart-unit.js';
import { TimeseriesDatapoint } from '../../../../core/types/timeseries.js';
import { YAxisScales } from '../../../types/state.js';
import { WeakMapDatapoints } from '../../../types/timeseries.js';
/**
 * Return boolean related if data-point is gap
 *
 * @param datapoint - The data points
 * @returns Wether the accessor is defined
 */
export declare function definedAccessor(datapoint: TimeseriesDatapoint, datapointsMap: WeakMapDatapoints): boolean;
/**
 * Get x-accessor base on xScale
 *
 * @param xScale - The x axis scale
 * @param clampedScale - the clamped scale
 * @returns The line chart x-accessor
 */
export declare function xAxisAccessor(xScale: ScaleTime<number, number>, datapointsMap: WeakMapDatapoints, clampedScale: ScaleTime<number, number>): (dataPoint: TimeseriesDatapoint) => number;
/**
 * Get y-accessor base on yScale
 *
 * @param unit - The series unit
 * @param yScales - The y axis scale
 * @param datapointsMap -
 * @returns The line chart y-accessor
 */
export declare function yAxisAccessor(yScales: YAxisScales, datapointsMap: WeakMapDatapoints, unit?: ChartUnit): (point: TimeseriesDatapoint) => number;