snapshot of https://github.com/TanStack/query.git (main, 2026-09-16; blobs > 131072B omitted)

packages/svelte-query/tests/createMutation/Failure.svelte

@@ -0,0 +1,24 @@
+<script lang="ts">
+  import type { QueryClient } from '@tanstack/query-core'
+  import { createMutation, setQueryClientContext } from '../../src/index.js'
+
+  type Props = {
+    queryClient: QueryClient
+    mutationFn: (value: { count: number }) => Promise<{ count: number }>
+  }
+
+  let { queryClient, mutationFn }: Props = $props()
+
+  let count = $state(0)
+
+  setQueryClientContext(queryClient)
+
+  const mutation = createMutation(() => ({ mutationFn }))
+</script>
+
+<button onclick={() => mutation.mutate({ count: ++count })}>Mutate</button>
+
+<div>Data: {mutation.data?.count ?? 'undefined'}</div>
+<div>Status: {mutation.status}</div>
+<div>Failure Count: {mutation.failureCount}</div>
+<div>Failure Reason: {mutation.failureReason ?? 'undefined'}</div>