@mui/x-charts/esm/internals/dateHelpers.js

The community edition of MUI X Charts components.

import { scaleTime } from '@mui/x-charts-vendor/d3-scale';
/**
 * Checks if the provided data array contains Date objects.
 * @param data The data array to check.
 * @returns A type predicate indicating if the data is an array of Date objects.
 */
export const isDateData = data => data?.[0] instanceof Date;

/**
 * Creates a formatter function for date values.
 * @param data The data array containing Date or NumberValue objects.
 * @param range The range for the time scale.
 * @param tickNumber (Optional) The number of ticks for formatting.
 * @returns A formatter function for date values.
 */
export function createDateFormatter(data, range, tickNumber) {
  const timeScale = scaleTime(data, range);
  return (v, {
    location
  }) => location === 'tick' ? timeScale.tickFormat(tickNumber)(v) : `${v.toLocaleString()}`;
}