import type { DateLib } from "../types/index.js";
/**
 * Represent the day displayed in the calendar.
 *
 * In DayPicker, a `Day` is a `Date` that can be displayed in the calendar. It
 * is used as extension of the native `Date` object to provide additional
 * information about the day.
 */
export declare class CalendarDay {
    constructor(date: Date, displayMonth: Date, 
    /** @ignore */
    dateLib?: DateLib);
    /**
     * The utility functions to manipulate dates.
     *
     * @private
     */
    readonly dateLib: DateLib;
    /**
     * Whether the day is not belonging to the displayed month.
     *
     * When `outside` is `true`, use `displayMonth` to know to which month the day
     * belongs.
     */
    readonly outside: boolean;
    /**
     * The months where the day is displayed.
     *
     * In DayPicker, days can fall out the displayed months (e.g. when
     * `showOutsideDays` is `true`). This property is useful to know if the day is
     * in the same month of the displayed month.
     */
    readonly displayMonth: Date;
    /** The date represented by this day. */
    readonly date: Date;
    /**
     * Check if the day is the same as the given day: considering if it is in the
     * same display month.
     */
    isEqualTo(day: CalendarDay): boolean;
}