ESLint

+ Add in ESLint support, with TS and Svelte included.
~ Resolve typing issues in both countdown, and in the healthcheck endpoint

src/components/countdown.svelte

@@ -2,7 +2,7 @@
   import { onMount } from "svelte";
 
   const GRADUATION = new Date(1753797600000).valueOf();
-  let interval: NodeJS.Timer;
+  let interval: ReturnType<typeof setInterval>;
 
   let timeTo = Math.abs(GRADUATION - Date.now().valueOf()) / 1000;
 

src/routes/api/healthcheck/+server.ts

@@ -1,5 +1,3 @@
-import type { RequestHandler } from "./$types";
-
-export const GET: RequestHandler = ({ url }) => {
+export function GET() {
   return new Response();
-};
+}