@mui/x-date-pickers/validation/validateDate.js

The community edition of the Date and Time Picker components (MUI X).

import { applyDefaultDate } from "../internals/utils/date-utils.js";
import { singleItemValueManager } from "../internals/utils/valueManagers.js";
export const validateDate = ({
  props,
  value,
  timezone,
  adapter
}) => {
  if (value === null) {
    return null;
  }
  const {
    shouldDisableDate,
    shouldDisableMonth,
    shouldDisableYear,
    disablePast,
    disableFuture
  } = props;
  const now = adapter.utils.date(undefined, timezone);
  const minDate = applyDefaultDate(adapter.utils, props.minDate, adapter.defaultDates.minDate);
  const maxDate = applyDefaultDate(adapter.utils, props.maxDate, adapter.defaultDates.maxDate);
  switch (true) {
    case !adapter.utils.isValid(value):
      return 'invalidDate';
    case Boolean(shouldDisableDate && shouldDisableDate(value)):
      return 'shouldDisableDate';
    case Boolean(shouldDisableMonth && shouldDisableMonth(value)):
      return 'shouldDisableMonth';
    case Boolean(shouldDisableYear && shouldDisableYear(value)):
      return 'shouldDisableYear';
    case Boolean(disableFuture && adapter.utils.isAfterDay(value, now)):
      return 'disableFuture';
    case Boolean(disablePast && adapter.utils.isBeforeDay(value, now)):
      return 'disablePast';
    case Boolean(minDate && adapter.utils.isBeforeDay(value, minDate)):
      return 'minDate';
    case Boolean(maxDate && adapter.utils.isAfterDay(value, maxDate)):
      return 'maxDate';
    default:
      return null;
  }
};
validateDate.valueManager = singleItemValueManager;