fix types

Co-authored-by: Petter Sæterøy <potetmos1@users.noreply.github.com>

src/components/Nav.astro

@@ -1,12 +1,11 @@
 ---
 import NavLink from '@components/NavLink.astro';
-
-import { translations } from '@data/i18n.js';
-const { lang = 'no' } = Astro.props;
+import { translations, type Lang } from '@data/i18n';
+const { lang = 'no' } = Astro.props as { lang?: Lang };
 const t = translations[lang].nav;
 const { pathname } = Astro.url;
 
-function getLangSwitchPath(path, lang) {
+function getLangSwitchPath(path: string, lang: string) {
   if (lang === 'no') {
     if (path === '/') return '/en/';
     if (path.startsWith('/en/')) return path.replace('/en/', '/');