@formatjs/intl-enumerator/src/get-supported-numbering-systems.js

Intl.Enumerator polyfill

import { createMemoizedNumberFormat } from "@formatjs/ecma402-abstract";
import { numberingSystemNames } from "./numbering-systems.generated.js";
function isSupportedNumberingSystem(system, locale = "en") {
	try {
		const numberFormat = createMemoizedNumberFormat(`${locale}-u-nu-${system}`);
		const options = numberFormat.resolvedOptions().numberingSystem;
		if (options === system && system === "latn" || numberFormat.format(123) !== "123") {
			return true;
		}
	} catch {}
	return false;
}
export function getSupportedNumberingSystems(locale) {
	return numberingSystemNames.filter((numberingSystemName) => isSupportedNumberingSystem(numberingSystemName, locale));
}