src/utils/date.ts


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import type { CollectionEntry } from "astro:content";
import { siteConfig } from "@/site.config";

export function getFormattedDate(
	date: Date | undefined,
	options?: Intl.DateTimeFormatOptions,
	locale?: string,
): string {
	if (date === undefined) {
		return "Invalid Date";
	}

	const effectiveLocale = locale === "pl" ? "pl-PL" : siteConfig.date.locale;
	return new Intl.DateTimeFormat(effectiveLocale, {
		...(siteConfig.date.options as Intl.DateTimeFormatOptions),
		...options,
	}).format(date);
}

export function collectionDateSort(a: CollectionEntry<"post">, b: CollectionEntry<"post">) {
	return b.data.publishDate.getTime() - a.data.publishDate.getTime();
}