@burglekitt/gmt/dist/plain/validate/isValidIsoDateLike.js

Temporal-based date and time utilities with timezone support and polyfill integration

import { Temporal } from "@js-temporal/polyfill";
import { plainDate, plainDateTime } from "../../regex/index.js";
import { isLeapSecond } from "./isLeapSecond.js";
/**
 * Return true when the input is a valid PlainDate or PlainDateTime ISO string.
 *
 * - Accepts both PlainDate ("2024-02-29") and PlainDateTime ("2024-02-29T12:34:56") formats.
 * - Uses regex to check format before parsing.
 * - Rejects leap seconds and invalid dates/times.
 *
 * @param value ISO PlainDate or PlainDateTime string
 * @returns boolean indicating validity
 *
 * @example isValidIsoDateLike("2024-02-29") // true
 * @example isValidIsoDateLike("2024-02-30") // false (invalid date)
 * @example isValidIsoDateLike("2024-02-29T12:34:56") // true
 * @example isValidIsoDateLike("2024-02-29T24:00:00") // false (invalid time)
 * @example isValidIsoDateLike("2024-12-31T23:59:60") // false (leap second)
 */
export function isValidIsoDateLike(value) {
    if (isLeapSecond(value)) {
        return false;
    }
    if (plainDate.test(value)) {
        try {
            Temporal.PlainDate.from(value);
            return true;
        }
        catch {
            return false;
        }
    }
    if (plainDateTime.test(value)) {
        try {
            Temporal.PlainDateTime.from(value);
            return true;
        }
        catch {
            return false;
        }
    }
    return false;
}