@burglekitt/gmt/dist/plain/parse/parseYearFromDateTime.js

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

import { Temporal } from "@js-temporal/polyfill";
import { isValidDateTime } from "../validate/index.js";
/**
 * Return the year for a given ISO 8601 datetime string.
 *
 * - Returns the year as a string (e.g., "2024").
 * - Returns "" for invalid input.
 *
 * @param value ISO datetime string
 * @returns Year (YYYY) or "" on invalid input
 *
 * @example parseYearFromDateTime("2024-03-15T12:30:00") // "2024"
 * @example parseYearFromDateTime("invalid") // ""
 */
export function parseYearFromDateTime(value) {
    if (!isValidDateTime(value))
        return "";
    try {
        const dateTime = Temporal.PlainDateTime.from(value);
        return dateTime.year.toString();
    }
    catch {
        return "";
    }
}