feat: fix prettier errors

.changeset/red-news-fold.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+feat: added filename for css hasing

packages/svelte/src/compiler/validate-options.js

@@ -73,7 +73,7 @@ const component_options = {
 	cssHash: fun(({ css, filename, name, hash }) => {
 		//either use extracted filename or component name
 		filename = filename ? filename.replace(/^.*[\\/]/, '') : name;
-		return `svelte-${hash(filename ?? css )}`;
+		return `svelte-${hash(filename ?? css)}`;
 	}),
 
 	// TODO this is a sourcemap option, would be good to put under a sourcemap namespace