src/components/Day.tsx

import React, { type HTMLAttributes } from "react";

import type { CalendarDay } from "../classes/index.js";
import type { Modifiers } from "../types/index.js";

/**
 * Render a grid cell for a specific day in the calendar.
 *
 * Handles interaction and focus for the day. If you only need to change the
 * content of the day cell, consider swapping the `DayButton` component
 * instead.
 *
 * @group Components
 * @see https://daypicker.dev/guides/custom-components
 */
export function Day(
  props: {
    /** The day to render. */
    day: CalendarDay;
    /** The modifiers to apply to the day. */
    modifiers: Modifiers;
  } & HTMLAttributes<HTMLDivElement>,
) {
  const { day, modifiers, ...tdProps } = props;
  return <td {...tdProps} />;
}

export type DayProps = Parameters<typeof Day>[0];