@mui/x-charts/hooks/getValueToPositionMapper.mjs

The community edition of MUI X Charts components.

'use client';

import { isOrdinalScale } from "../internals/scaleGuards.mjs";
/**
 * For a given scale return a function that map value to their position.
 * Useful when dealing with specific scale such as band.
 * @param {D3Scale} scale The scale to use
 * @returns {(value: any) => number} A function that map value to their position
 */
export function getValueToPositionMapper(scale) {
  if (isOrdinalScale(scale)) {
    return value => (scale(value) ?? 0) + scale.bandwidth() / 2;
  }
  const domain = scale.domain();

  // Fixes https://github.com/mui/mui-x/issues/18999#issuecomment-3173787401
  if (domain[0] === domain[1]) {
    return value => value === domain[0] ? scale(value) : NaN;
  }
  return value => scale(value);
}