/**
 * Sets the selection type - single, multi or range.
 */
export declare const CalendarSelection: {
    SINGLE: "single";
    MULTI: "multi";
    RANGE: "range";
};
export type CalendarSelection = (typeof CalendarSelection)[keyof typeof CalendarSelection];
export declare const enum ScrollDirection {
    PREV = "prev",
    NEXT = "next",
    NONE = "none"
}
export interface IViewDateChangeEventArgs {
    previousValue: Date;
    currentValue: Date;
}
export declare const IgxCalendarView: {
    Month: "month";
    Year: "year";
    Decade: "decade";
};
/**
 * Determines the Calendar active view - days, months or years.
 */
export type IgxCalendarView = (typeof IgxCalendarView)[keyof typeof IgxCalendarView];
export declare const range: (start: number, stop: number, step?: number) => any[];
/**
 * Returns true for leap years, false for non-leap years.
 *
 * @export
 * @param year
 * @returns
 */
export declare const isLeap: (year: number) => boolean;
export declare const weekDay: (year: number, month: number, day: number) => number;
/**
 * Return weekday and number of days for year, month.
 *
 * @export
 * @param year
 * @param month
 * @returns
 */
export declare const monthRange: (year: number, month: number) => number[];
export interface IFormattedParts {
    value: string;
    literal?: string;
    combined: string;
}
export interface IFormattingOptions {
    day?: 'numeric' | '2-digit';
    month?: 'numeric' | '2-digit' | 'long' | 'short' | 'narrow';
    weekday?: 'long' | 'short' | 'narrow';
    year?: 'numeric' | '2-digit';
}
export interface IFormattingViews {
    day?: boolean;
    month?: boolean;
    year?: boolean;
}
export declare enum WEEKDAYS {
    SUNDAY = 0,
    MONDAY = 1,
    TUESDAY = 2,
    WEDNESDAY = 3,
    THURSDAY = 4,
    FRIDAY = 5,
    SATURDAY = 6
}
export declare class Calendar {
    timedelta(date: Date, interval: string, units: number): Date;
}