add typescript support in svelte files, .js to .ts

src/routes/(angemeldet)/view/+page.server.ts

@@ -0,0 +1,27 @@
+import caseNumberOccupied from '$lib/helper/caseNumberOccupied';
+import { fail, redirect } from '@sveltejs/kit';
+
+/** @type {import('./$types').Actions} */
+export const actions = {
+	default: async ({ request }) => {
+		const data = await request.formData();
+		const caseNumber = data.get('caseNumber');
+
+		if (!caseNumber) {
+			return fail(400, {
+				success: false,
+				caseNumber,
+				error: { caseNumber: 'Die Vorgangsnummer darf nicht leer sein.' }
+			});
+		}
+
+		if (!(await caseNumberOccupied(caseNumber))) {
+			return fail(400, {
+				success: false,
+				caseNumber,
+				error: { caseNumber: 'Die Vorgangsnummer existiert in dieser Anwendung nicht.' }
+			});
+		}
+		throw redirect(303, `/list/${caseNumber}`);
+	}
+};