fix: ensure browser updates are performed when there are no query params

Author: Ernxst

packages/core/src/lib/adapters/browser.ts

@@ -28,7 +28,8 @@ export function browser(options: BrowserAdapterOptions = {}): Adapter {
 		isBrowser: () => typeof window !== "undefined",
 		browser: {
 			read: () => windowObj.location,
-			save: (search, hash) => update(null, "", `${search}${hash}`),
+			save: (search, hash) =>
+				update(null, "", `${search.length ? search : "?"}${hash}`),
 		},
 		server: {
 			save: () => {},

packages/core/src/lib/adapters/sveltekit.ts

@@ -23,7 +23,8 @@ export function sveltekit(options: SvelteKitAdapterOptions = {}): Adapter {
 				return window.location;
 			},
 			save(search, hash) {
-				goto(`${search}${hash}`, {
+				const searchString = search.length ? search : "?";
+				goto(`${searchString}${hash}`, {
 					keepFocus: true,
 					noScroll: true,
 					replaceState: replace,