From 5641c50125576d789f588159283503eb50322c7d Mon Sep 17 00:00:00 2001
From: Wonsuk Choi <sukvvon@gmail.com>
Date: Mon, 13 Apr 2026 09:57:23 +0900
Subject: [PATCH 1/2] test(vue-query/mutationOptions): add type tests for
 getter overloads

---
 .../src/__tests__/mutationOptions.test-d.ts   | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/packages/vue-query/src/__tests__/mutationOptions.test-d.ts b/packages/vue-query/src/__tests__/mutationOptions.test-d.ts
index 9f0d1fe4a7..155cb79588 100644
--- a/packages/vue-query/src/__tests__/mutationOptions.test-d.ts
+++ b/packages/vue-query/src/__tests__/mutationOptions.test-d.ts
@@ -243,4 +243,57 @@ describe('mutationOptions', () => {
     const resolved = options()
     expectTypeOf(resolved.mutationFn).not.toBeUndefined()
   })
+
+  it('should error if mutationFn return type mismatches TData (getter)', () => {
+    assertType(
+      mutationOptions<number>(() => ({
+        // @ts-expect-error this is a good error, because return type is string, not number
+        mutationFn: async () => Promise.resolve('wrong return'),
+      })),
+    )
+  })
+
+  it('should infer all types when not explicitly provided (getter)', () => {
+    expectTypeOf(
+      mutationOptions(() => ({
+        mutationFn: (id: string) => Promise.resolve(id.length),
+        mutationKey: ['key'],
+        onSuccess: (data) => {
+          expectTypeOf(data).toEqualTypeOf<number>()
+        },
+      })),
+    ).toEqualTypeOf<
+      () => WithRequired<
+        MutationOptions<number, DefaultError, string, unknown>,
+        'mutationKey'
+      >
+    >()
+    expectTypeOf(
+      mutationOptions(() => ({
+        mutationFn: (id: string) => Promise.resolve(id.length),
+        onSuccess: (data) => {
+          expectTypeOf(data).toEqualTypeOf<number>()
+        },
+      })),
+    ).toEqualTypeOf<
+      () => Omit<
+        MutationOptions<number, DefaultError, string, unknown>,
+        'mutationKey'
+      >
+    >()
+  })
+
+  it('should work when used with useMutation (getter)', () => {
+    const mutation = useMutation(
+      mutationOptions(() => ({
+        mutationKey: ['key'],
+        mutationFn: () => Promise.resolve('data'),
+        onSuccess: (data) => {
+          expectTypeOf(data).toEqualTypeOf<string>()
+        },
+      })),
+    )
+    expectTypeOf(mutation.data.value).toEqualTypeOf<string | undefined>()
+  })
+
 })

From 097605126024aed445d873245439a6db25dc3b52 Mon Sep 17 00:00:00 2001
From: "autofix-ci[bot]" <114827586+autofix-ci[bot]@users.noreply.github.com>
Date: Mon, 13 Apr 2026 00:58:53 +0000
Subject: [PATCH 2/2] ci: apply automated fixes

---
 packages/vue-query/src/__tests__/mutationOptions.test-d.ts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/packages/vue-query/src/__tests__/mutationOptions.test-d.ts b/packages/vue-query/src/__tests__/mutationOptions.test-d.ts
index 155cb79588..14d19a9f43 100644
--- a/packages/vue-query/src/__tests__/mutationOptions.test-d.ts
+++ b/packages/vue-query/src/__tests__/mutationOptions.test-d.ts
@@ -295,5 +295,4 @@ describe('mutationOptions', () => {
     )
     expectTypeOf(mutation.data.value).toEqualTypeOf<string | undefined>()
   })
-
 })