test(svelte-query): replace 'async/await sleep' with 'sleep().then()' in test 'queryFn' and 'mutationFn' (#10397)

Author: sukvvon

packages/svelte-query/tests/createQuery.svelte.test.ts

@@ -1275,10 +1275,7 @@ describe('createQuery', () => {
     // Prefetch the query
     const prefetchPromise = queryClient.prefetchQuery({
       queryKey: key,
-      queryFn: async () => {
-        await sleep(10)
-        return 'prefetch'
-      },
+      queryFn: () => sleep(10).then(() => 'prefetch'),
     })
     await vi.advanceTimersByTimeAsync(10)
     await prefetchPromise
@@ -1518,10 +1515,7 @@ describe('createQuery', () => {
     withEffectRoot(() => {
       const key = ['test-key']
 
-      const queryFn = async () => {
-        await sleep(10)
-        return 'data1'
-      }
+      const queryFn = () => sleep(10).then(() => 'data1')
 
       // Create two queries with the same key but different options
       createQuery(

packages/svelte-query/tests/useIsFetching/Query.svelte

@@ -6,10 +6,7 @@
 
   const query = createQuery(() => ({
     queryKey: ['test'],
-    queryFn: async () => {
-      await sleep(10)
-      return 'test'
-    },
+    queryFn: () => sleep(10).then(() => 'test'),
     enabled: ready,
   }))
 </script>

packages/svelte-query/tests/useIsMutating/Query.svelte

@@ -4,10 +4,7 @@
 
   const mutation = createMutation(() => ({
     mutationKey: ['mutation-1'],
-    mutationFn: async () => {
-      await sleep(10)
-      return 'data'
-    },
+    mutationFn: () => sleep(10).then(() => 'data'),
   }))
 </script>