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

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

@@ -0,0 +1,30 @@
+<script lang="ts">
+  import type { QueryClient } from '@tanstack/query-core'
+  import { createMutation, setQueryClientContext } from '../../src/index.js'
+  import { sleep } from '@tanstack/query-test-utils'
+
+  type Props = {
+    queryClient: QueryClient
+    onSuccessPerCall: (...args: Array<unknown>) => void
+  }
+
+  const { queryClient, onSuccessPerCall }: Props = $props()
+
+  setQueryClientContext(queryClient)
+
+  const mutation = createMutation(() => ({
+    mutationFn: (text: string) => sleep(10).then(() => text),
+  }))
+</script>
+
+<button
+  onclick={() => mutation.mutate('Todo 1', { onSuccess: onSuccessPerCall })}
+>
+  mutate1
+</button>
+<button
+  onclick={() => mutation.mutate('Todo 2', { onSuccess: onSuccessPerCall })}
+>
+  mutate2
+</button>
+<div>data: {mutation.data ?? 'null'}, status: {mutation.status}</div>