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

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

import { Temporal } from "@js-temporal/polyfill";
import { isValidDate } from "../validate/index.js";
/**
 * Return the day of month (1-31) for a given ISO 8601 date string.
 *
 * - Returns zero-padded string for day.
 * - Returns "" for invalid input.
 *
 * @param value ISO date string
 * @returns Day (01-31) or "" on invalid input
 *
 * @example parseDayFromDate("2024-03-15") // "15"
 * @example parseDayFromDate("invalid") // ""
 */
export function parseDayFromDate(value) {
    if (!isValidDate(value))
        return "";
    try {
        const date = Temporal.PlainDate.from(value);
        return date.day.toString().padStart(2, "0");
    }
    catch {
        return "";
    }
}