import { Domain, YRange, Feature } from './types';
export declare function m(x: number, y: number): string;
export declare function l(x: number, y: number): string;
/**
 * Creates a closure for mapping values into an X coordinate space.
 * @param domain object with the start and end coordinates of the original values.
 * @param width the maximum value of the output space.
 */
export declare function xtransform(domain: Domain, width: number): (i: number) => number;
/**
 * Creates a linear scale for mapping values into a Y coordinate space.
 * @param range object with the max and min coordinates of the original values.
 * @param height the maximum value of the output space.
 */
export declare function ytransform(range: YRange, height: number): (i: number) => number;
/**
 * Creates a linear scale for mapping values from one coordinate space to another.
 * @param indomain the original domain.
 * @param outdomain the output domain.
 */
export declare function linearTransform(inDomain: Domain, outDomain: Domain): (value: number) => number;
/**
 * Creates a linear scale for mapping track input coordinates to an output x coordinate range. If the
 * domain is not explicitly given it will be computed from the minima and maxima of the passed track data.
 * @param domain object with the start and end coordinates to set, or null.
 * @param data optional array of objects with start and end coordinates to compute the domain.
 * @param width the maximum value of the output space.
 */
export declare function trackXTransform(domain: Domain, data: Domain[], width: number): (i: number) => number;
/**
 * Creates a linear scale for mapping track input coordinates to an output x coordinate range. If the
 * domain is not explicitly given it will be computed from the minima and maxima of the passed track data.
 * @param domain object with the start and end coordinates to set, or null.
 * @param data optional array of objects with start and end coordinates to compute the domain.
 * @param width the maximum value of the output space.
 */
export declare function trackYTransform(range: YRange, data: YRange[], height: number): (i: number) => number;
export declare function groupFeatures<T extends Feature>(features: T[], x: (value: number) => number, fontSize: number, margin?: number | undefined): T[][];
export declare function formatPoint(point?: number): string;