import { DayListShape, DatePickerOutPut, MainDate } from "../interfaces/datepicker.interfaces";
export declare const _type_safe_isValidDate: (time: any) => time is Date;
export declare const _is_number: (num: number | undefined | null) => num is number;
export declare const formatDate: (date: Date | MainDate | string | undefined, format?: string) => {
    day: number | undefined;
    month: number;
    year: number;
};
/**
 * 0 based circular array with given length that has inc and desc func
 *
 * @param {Number} value current value that needs to increment
 * @param {Number} length Length of the entire circular array
 */
export declare function incrementCircularData(value: number, length: number): number;
export declare const getWeekList: (weekStartsOn?: number) => string[];
export declare const createRangeIndex: (day: number | undefined, month: number, year: number) => number | undefined;
export declare const parseRangeIndex: (rangeIndex: number) => number[];
export declare const getDayList: (day: number | undefined, month: number, year: number, weekStartsOn?: any) => DayListShape[][];
export declare const generateDatePickerOutput: (day: number | undefined, month: number, year: number, format: string) => DatePickerOutPut;
export declare const getInitialDateForInput: (date: Date | MainDate | string | undefined, format?: string) => string;