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

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

@@ -0,0 +1,23 @@
+<script lang="ts">
+  import type { QueryClient, QueryKey } from '@tanstack/query-core'
+  import { createMutation, setQueryClientContext } from '../../src/index.js'
+  import { sleep } from '@tanstack/query-test-utils'
+
+  type Props = {
+    queryClient: QueryClient
+    queryKey: QueryKey
+  }
+
+  const { queryClient, queryKey }: Props = $props()
+
+  setQueryClientContext(queryClient)
+
+  const mutation = createMutation(() => ({
+    mutationFn: (_text: string, context) =>
+      sleep(10).then(() => context.client.getQueryData(queryKey)),
+  }))
+</script>
+
+<button onclick={() => mutation.mutate('todo')}>Mutate</button>
+
+<div>data: {mutation.data}</div>