ts-time-utils/dist/validate.js

A comprehensive TypeScript utility library for time, dates, durations, and calendar operations with full tree-shaking support

/**
 * Check if a date is valid
 * @param date - date to validate
 */
export function isValidDate(date) {
    if (date instanceof Date) {
        return !isNaN(date.getTime());
    }
    if (typeof date === 'string' || typeof date === 'number') {
        const parsed = new Date(date);
        return !isNaN(parsed.getTime());
    }
    return false;
}
/**
 * Check if a year is a leap year
 * @param year - year to check
 */
export function isLeapYear(year) {
    return (year % 4 === 0 && year % 100 !== 0) || (year % 400 === 0);
}
/**
 * Check if a date is in the past
 * @param date - date to check
 */
export function isPast(date) {
    return date.getTime() < new Date().getTime();
}
/**
 * Check if a date is in the future
 * @param date - date to check
 */
export function isFuture(date) {
    return date.getTime() > new Date().getTime();
}
/**
 * Check if a date is today
 * @param date - date to check
 */
export function isToday(date) {
    const today = new Date();
    return (date.getDate() === today.getDate() &&
        date.getMonth() === today.getMonth() &&
        date.getFullYear() === today.getFullYear());
}
/**
 * Check if a date is yesterday
 * @param date - date to check
 */
export function isYesterday(date) {
    const yesterday = new Date();
    yesterday.setDate(yesterday.getDate() - 1);
    return (date.getDate() === yesterday.getDate() &&
        date.getMonth() === yesterday.getMonth() &&
        date.getFullYear() === yesterday.getFullYear());
}
/**
 * Check if a date is tomorrow
 * @param date - date to check
 */
export function isTomorrow(date) {
    const tomorrow = new Date();
    tomorrow.setDate(tomorrow.getDate() + 1);
    return (date.getDate() === tomorrow.getDate() &&
        date.getMonth() === tomorrow.getMonth() &&
        date.getFullYear() === tomorrow.getFullYear());
}
/**
 * Check if two dates are the same day
 * @param date1 - first date
 * @param date2 - second date
 */
export function isSameDay(date1, date2) {
    return (date1.getDate() === date2.getDate() &&
        date1.getMonth() === date2.getMonth() &&
        date1.getFullYear() === date2.getFullYear());
}
/**
 * Check if a date is a weekend (Saturday or Sunday)
 * @param date - date to check
 */
export function isWeekend(date) {
    const dayOfWeek = date.getDay();
    return dayOfWeek === 0 || dayOfWeek === 6; // Sunday or Saturday
}
/**
 * Check if a date is a weekday (Monday through Friday)
 * @param date - date to check
 */
export function isWeekday(date) {
    return !isWeekend(date);
}
/**
 * Check if a time string is valid (HH:MM or HH:MM:SS format)
 * @param time - time string to validate
 */
export function isValidTimeString(time) {
    const timeRegex = /^([01]?[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$/;
    return timeRegex.test(time);
}
/**
 * Check if a date string is valid ISO 8601 format
 * @param dateString - date string to validate
 */
export function isValidISOString(dateString) {
    const isoRegex = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{3})?Z?$/;
    return isoRegex.test(dateString) && isValidDate(dateString);
}