Create get query client to work on next

frontend/src/app/api/get-query-client.ts

@@ -0,0 +1,37 @@
+import {
+  QueryClient,
+  defaultShouldDehydrateQuery,
+  isServer,
+} from "@tanstack/react-query";
+
+function makeQueryClient() {
+  return new QueryClient({
+    defaultOptions: {
+      queries: {
+        staleTime: 60 * 1000,
+      },
+      dehydrate: {
+        // include pending queries in dehydration
+        shouldDehydrateQuery: (query) =>
+          defaultShouldDehydrateQuery(query) ||
+          query.state.status === "pending",
+      },
+    },
+  });
+}
+
+let browserQueryClient: QueryClient | undefined = undefined;
+
+export function getQueryClient() {
+  if (isServer) {
+    // Server: always make a new query client
+    return makeQueryClient();
+  } else {
+    // Browser: make a new query client if we don't already have one
+    // This is very important, so we don't re-make a new client if React
+    // suspends during the initial render. This may not be needed if we
+    // have a suspense boundary BELOW the creation of the query client
+    if (!browserQueryClient) browserQueryClient = makeQueryClient();
+    return browserQueryClient;
+  }
+}