Apply suggestions from code review

Author: dummdidumm

packages/kit/src/core/sync/write_client_manifest.js

@@ -153,7 +153,7 @@ export function write_client_manifest(kit, manifest_data, output, metadata) {
 				}(({ error }) => { console.error(error) }),
 				${client_hooks_file ? 'init: client_hooks.init,' : ''}
 
-				reroute: ${universal_hooks_file ? 'universal_hooks.reroute || ' : ''}(() => {}),
+				reroute: ${universal_hooks_file ? 'universal_hooks.reroute || ' : ''}(() => {})
 			};
 
 			export { default as root } from '../root.${isSvelte5Plus() ? 'js' : 'svelte'}';

packages/kit/src/runtime/server/index.js

@@ -66,6 +66,8 @@ export class Server {
 			set_read_implementation(read);
 		}
 
+		// During DEV and for some adapters this function might be called in quick succession,
+		// so we need to make sure we're not invoking this logic (most notably the init hook) multiple times
 		await (init_promise ??= (async () => {
 			try {
 				const module = await get_hooks();