/**
 * Given a date or dateString it adds a few days to that date & formats the date in a certain format
 * @param date could be a string like YYYY-MM-DD or a Date object
 * @param numberOfDays the number of days to add
 * @param formatString the format string to format the date
 * @returns {string}
 */
export declare function addDaysAndFormat(date: Date | string, numberOfDays: number, formatString?: string): string;
export declare function formatDate(date: Date | string, formatString?: string): string;
/**
 * Checks if a date string provided is in YYYY-MM-DD format
 */
export declare function isYYYY_MM_DD(dateStr: string): boolean;
/**
 * Returns all dates in between two days
 * @param startDate the date to start from
 * @param endDate the date to end at
 * @param exclusive should the last date be excluded?
 */
export declare function getDatesBetween(startDate: string | Date, endDate: string | Date, exclusive?: boolean): Date[];
/**
 * This number represents a day in seconds
 */
export declare const DAY_IN_SECONDS = 86400;
/**
 * This number represents a day in minutes
 */
export declare const DAY_IN_MINUTES = 1440;
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