@burglekitt/gmt/dist/plain/compare/isBeforeDate.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 true when `value1` is strictly before `value2` for PlainDate values.
 *
 * - Uses Temporal.PlainDate.compare to compare dates.
 * - Returns false if either input is invalid.
 *
 * @param value1 ISO PlainDate string for the first value
 * @param value2 ISO PlainDate string for the second value
 * @returns boolean indicating whether value1 < value2
 *
 * @example isBeforeDate("2024-02-28", "2024-02-29") // true
 * @example isBeforeDate("2024-02-29", "2024-02-29") // false
 * @example isBeforeDate("2024-02-29", "2024-02-28") // false
 * @example isBeforeDate("invalid", "2024-02-29") // false
 * @example isBeforeDate("2024-02-29", "invalid") // false
 */
export function isBeforeDate(value1, value2) {
    if (!isValidDate(value1) || !isValidDate(value2)) {
        return false;
    }
    try {
        return (Temporal.PlainDate.compare(Temporal.PlainDate.from(value1), Temporal.PlainDate.from(value2)) === -1);
    }
    catch {
        return false;
    }
}