@formatjs/intl-enumerator/src/get-supported-collations.js

Intl.Enumerator polyfill

import { collations } from "./collations.generated.js";
function isSupported(collation, locale = "en") {
	try {
		return Intl.Collator(`${locale}-u-co-${collation}`).resolvedOptions().collation === collation;
	} catch {}
	return false;
}
export function getSupportedCollations(locale) {
	return collations.filter((collation) => isSupported(collation, locale));
}