Merged in chore/next15 (pull request #1999)

chore (SW-834): Upgrade to Next 15

* wip: apply codemod and upgrade swc plugin

* wip: design-system to react 19, fix issues from async (search)params

* wip: fix remaining issues from codemod

serverClient is now async because context use headers()
getLang is now async because it uses headers()

* Minor cleanup

* Inline react-material-symbols package

Package is seemingly not maintained any more and doesn't support
React 19. This copies the package source into `design-system`,
makes the necessary changes for 19 and export it for others to use.

* Fix missing awaits

* Disable modal exit animations

Enabling modal exit animations via isExiting prop is causing
modals to be rendered in "hidden" state and never unmount.
Seems to be an issue with react-aria-components,
see https://github.com/adobe/react-spectrum/issues/7563.
Can probably be fixed by rewriting to a solution similar to
https://react-spectrum.adobe.com/react-aria/examples/framer-modal-sheet.html

* Remove unstable cache implementation and use in memory cache locally

* Fix ref type in SelectFilter

* Use cloneElement to add key prop to element


Approved-by: Linus Flood

apps/scandic-web/providers/AddAncillaryProvider.tsx

@@ -22,7 +22,7 @@ export function AddAncillaryProvider({
   booking: Room
   children: React.ReactNode
 }) {
-  const storeRef = useRef<AddAncillaryStore>()
+  const storeRef = useRef<AddAncillaryStore>(undefined)
   if (!storeRef.current) {
     storeRef.current = createAddAncillaryStore(booking, ancillaries)
   }

apps/scandic-web/providers/BookingConfirmationProvider.tsx

@@ -23,7 +23,7 @@ export default function BookingConfirmationProvider({
   vat,
 }: BookingConfirmationProviderProps) {
   const intl = useIntl()
-  const storeRef = useRef<BookingConfirmationStore>()
+  const storeRef = useRef<BookingConfirmationStore>(undefined)
 
   if (!storeRef.current) {
     const totalBookingPrice = rooms.reduce((acc, room) => {

apps/scandic-web/providers/DestinationDataProvider/index.tsx

@@ -17,7 +17,7 @@ export default function DestinationDataProvider({
   sortItems,
   children,
 }: DestinationDataProviderProps) {
-  const storeRef = useRef<DestinationDataStore>()
+  const storeRef = useRef<DestinationDataStore>(undefined)
   const pathname = usePathname()
 
   if (!storeRef.current) {

apps/scandic-web/providers/EnterDetailsProvider.tsx

@@ -37,7 +37,7 @@ export default function EnterDetailsProvider({
   // and since we read from SessionStorage we need to delay
   // rendering the form until that has been done.
   const [hasInitializedStore, setHasInitializedStore] = useState(false)
-  const storeRef = useRef<DetailsStore>()
+  const storeRef = useRef<DetailsStore>(undefined)
   if (!storeRef.current) {
     const initialData: InitialState = {
       booking,

apps/scandic-web/providers/MyStay.tsx

@@ -39,7 +39,7 @@ export default function MyStayProvider({
   roomCategories,
   savedCreditCards,
 }: React.PropsWithChildren<MyStayProviderProps>) {
-  const storeRef = useRef<MyStayStore>()
+  const storeRef = useRef<MyStayStore>(undefined)
   const intl = useIntl()
 
   const { data, error, isFetching, isFetchedAfterMount } =