[chore] typecheck example (#2019)

Author: benmccann

examples/hn.svelte.dev/src/routes/[list]/rss.js

@@ -1,3 +1,7 @@
+/**
+ * @param {string} list
+ * @param {Record<string, any>[]} items
+ */
 const render = (list, items) => `<?xml version="1.0" encoding="UTF-8" ?>
 <rss version="2.0">
 <channel>
@@ -27,9 +31,12 @@ const render = (list, items) => `<?xml version="1.0" encoding="UTF-8" ?>
 </channel>
 </rss>`;
 
-export function get(req, res) {
+/**
+ * @type {import('@sveltejs/kit').RequestHandler}
+ */
+export function get({ params }) {
 	const list =
-		req.params.list === 'top' ? 'news' : req.params.list === 'new' ? 'newest' : req.params.list;
+		params.list === 'top' ? 'news' : params.list === 'new' ? 'newest' : params.list;
 
 	fetch(`https://api.hnpwa.com/v0/${list}/1.json`)
 		.then((r) => r.json())

examples/hn.svelte.dev/src/routes/rss.js

@@ -1,3 +1,9 @@
-export function get(req, res) {
-	res.redirect('/top/rss');
-}
+/**
+ * @type {import('@sveltejs/kit').RequestHandler}
+ */
+export function get() {
+	return {
+		headers: { Location: '/top/rss' },
+		status: 301
+	};
+}

examples/hn.svelte.dev/tsconfig.json

@@ -1,8 +1,14 @@
 {
 	"compilerOptions": {
+		"allowJs": true,
+		"checkJs": true,
+		"noEmit": true,
+		"strict": true,
 		"baseUrl": ".",
 		"paths": {
-			"$lib/*": ["./src/lib/*"]
+			"$lib": ["src/lib"],
+			"$lib/*": ["src/lib/*"]
 		}
-	}
+	},
+	"include": ["src/**/*.d.ts", "src/**/*.js", "src/**/*.svelte"]
 }