datezone/dist/output/compare.pub.js

A lightweight and comprehensive date and timeZone utility library for JavaScript.

import { timestampToCalendar } from "./calendar.pub.js";
import { dayOfWeek, startOfDay } from "./day.pub.js";
/**
 * Checks if today.
 *
 * @see https://datezone.dev/docs/reference/compare#istoday
 */
export function isToday(ts, timeZone) {
    const todayStart = startOfDay(Date.now(), timeZone);
    return ts >= todayStart && ts < todayStart + 86_400_000;
}
/**
 * Checks if tomorrow.
 *
 * @see https://datezone.dev/docs/reference/compare#istomorrow
 */
export function isTomorrow(ts, timeZone) {
    const todayStart = startOfDay(Date.now(), timeZone);
    const tomorrowStart = todayStart + 86_400_000; // Add one day in milliseconds
    const dateStart = startOfDay(ts, timeZone);
    return tomorrowStart === dateStart;
}
/**
 * Checks if yesterday.
 *
 * @see https://datezone.dev/docs/reference/compare#isyesterday
 */
export function isYesterday(ts, timeZone) {
    const todayStart = startOfDay(Date.now(), timeZone);
    const yesterdayStart = todayStart - 86_400_000; // Subtract one day in milliseconds
    const dateStart = startOfDay(ts, timeZone);
    return yesterdayStart === dateStart;
}
/**
 * Checks if past.
 *
 * @see https://datezone.dev/docs/reference/compare#ispast
 */
export function isPast(ts) {
    const now = Date.now();
    return ts < now;
}
/**
 * Checks if future.
 *
 * @see https://datezone.dev/docs/reference/compare#isfuture
 */
export function isFuture(ts) {
    const now = Date.now();
    return ts > now;
}
/**
 * Checks if weekend.
 *
 * @see https://datezone.dev/docs/reference/compare#isweekend
 */
export function isWeekend(ts, timeZone) {
    const dow = dayOfWeek(ts, timeZone);
    return dow === 6 || dow === 7; // Saturday or Sunday in ISO format (1=Monday, 7=Sunday)
}
/**
 * Checks if before.
 *
 * @see https://datezone.dev/docs/reference/compare#isbefore
 */
export function isBefore(ts1, ts2) {
    return ts1 < ts2;
}
/**
 * Checks if after.
 *
 * @see https://datezone.dev/docs/reference/compare#isafter
 */
export function isAfter(ts1, ts2) {
    return ts1 > ts2;
}
/**
 * Checks if equal.
 *
 * @see https://datezone.dev/docs/reference/compare#isequal
 */
export function isEqual(ts1, ts2) {
    return ts1 === ts2;
}
/**
 * Checks if same day.
 *
 * @see https://datezone.dev/docs/reference/compare#issameday
 */
export function isSameDay(ts1, ts2, timeZone) {
    const start1 = startOfDay(ts1, timeZone);
    const start2 = startOfDay(ts2, timeZone);
    return start1 === start2;
}
/**
 * Checks if same week.
 *
 * @see https://datezone.dev/docs/reference/compare#issameweek
 */
export function isSameWeek(ts1, ts2, timeZone) {
    const dow1 = dayOfWeek(ts1, timeZone);
    const dow2 = dayOfWeek(ts2, timeZone);
    const weekStart1 = startOfDay(ts1 - (dow1 - 1) * 86_400_000, timeZone);
    const weekStart2 = startOfDay(ts2 - (dow2 - 1) * 86_400_000, timeZone);
    return weekStart1 === weekStart2;
}
/**
 * Checks if same month.
 *
 * @see https://datezone.dev/docs/reference/compare#issamemonth
 */
export function isSameMonth(ts1, ts2, timeZone) {
    // Fastpath local timezone
    if (!timeZone === null) {
        const d1 = new Date(ts1);
        const d2 = new Date(ts2);
        return (d1.getFullYear() === d2.getFullYear() && d1.getMonth() === d2.getMonth());
    }
    const d1 = timestampToCalendar(ts1, timeZone);
    const d2 = timestampToCalendar(ts2, timeZone);
    return d1.year === d2.year && d1.month === d2.month;
}
/**
 * Checks if same year.
 *
 * @see https://datezone.dev/docs/reference/compare#issameyear
 */
export function isSameYear(ts1, ts2, timeZone) {
    // Fastpath local timezone
    if (timeZone === null) {
        const d1 = new Date(ts1);
        const d2 = new Date(ts2);
        return d1.getFullYear() === d2.getFullYear();
    }
    const d1 = timestampToCalendar(ts1, timeZone);
    const d2 = timestampToCalendar(ts2, timeZone);
    return d1.year === d2.year;
}
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