import { ScaleBand, ScaleLinear, ScaleLogarithmic, ScaleTime } from 'd3-scale';
import { ScaleKind } from './types';
export type ContinuousScale = ScaleLinear<number, number> | ScaleLogarithmic<number, number> | ScaleTime<number, number>;
export type ChartXScale = ContinuousScale | ScaleBand<string>;
export type ChartYScale = ScaleLinear<number, number>;
export declare function isBandScale(scale: ChartXScale): scale is ScaleBand<string>;
export declare function createXScale(kind: ScaleKind, domain: Array<string | number>, range: [number, number]): ChartXScale;
export declare function createYScale(domain: [number, number], range: [number, number], nice: boolean): ChartYScale;
/**
 * Positions a datum on the x axis. Band values map to the center of their band
 * so line/scatter series can share an axis with bar series.
 */
export declare function xPosition(scale: ChartXScale, value: string | number): number;
/** Tick values for an x scale: band domains list every band. */
export declare function xTickValues(scale: ChartXScale, count: number): Array<string | number | Date>;
/**
 * Default tick label formatter. Continuous scales use d3's smart tick format
 * (time scales pick a unit-appropriate representation); bands echo the value.
 */
export declare function defaultTickFormat(scale: ChartXScale | ChartYScale, count: number): (value: string | number | Date) => string;