fix build config

Author: Rich-Harris

svelte.config.js

@@ -7,11 +7,13 @@ const config = {
 		adapter: adapter(),
 
 		vite: {
+			build: {
+				target: 'esnext'
+			},
+
 			server: {
 				fs: {
-					allow: [
-						path.resolve('.apps')
-					]
+					allow: [path.resolve('.apps')]
 				},
 				watch: {
 					ignored: ['**/.apps/**']