@inlang/paraglide-js/dist/compiler/runtime/is-locale.js

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import { locales } from "./variables.js";
/**
 * Check if something is an available locale.
 *
 * @example
 *   if (isLocale(params.locale)) {
 *     setLocale(params.locale);
 *   } else {
 *     setLocale('en');
 *   }
 *
 * @param {any} locale
 * @returns {locale is Locale}
 */
export function isLocale(locale) {
    return !locale ? false : locales.includes(locale);
}