@mui/x-charts/esm/LineChart/seriesConfig/getColor.js

The community edition of MUI X Charts components.

import { getSeriesColorFn } from "../../internals/getSeriesColorFn.js";
const getColor = (series, xAxis, yAxis) => {
  const yColorScale = yAxis?.colorScale;
  const xColorScale = xAxis?.colorScale;
  const getSeriesColor = getSeriesColorFn(series);
  if (yColorScale) {
    return dataIndex => {
      if (dataIndex === undefined) {
        return series.color;
      }
      const value = series.data[dataIndex];
      const color = value === null ? getSeriesColor({
        value,
        dataIndex
      }) : yColorScale(value);
      if (color === null) {
        return getSeriesColor({
          value,
          dataIndex
        });
      }
      return color;
    };
  }
  if (xColorScale) {
    return dataIndex => {
      if (dataIndex === undefined) {
        return series.color;
      }
      const value = xAxis.data?.[dataIndex];
      const color = value === null ? getSeriesColor({
        value,
        dataIndex
      }) : xColorScale(value);
      if (color === null) {
        return getSeriesColor({
          value,
          dataIndex
        });
      }
      return color;
    };
  }
  return dataIndex => {
    if (dataIndex === undefined) {
      return series.color;
    }
    const value = series.data[dataIndex];
    return getSeriesColor({
      value,
      dataIndex
    });
  };
};
export default getColor;