From 4918a06e320d6f052a906f748f46285d1de2728f Mon Sep 17 00:00:00 2001
From: fisker Cheung <lionkay@gmail.com>
Date: Mon, 8 Jun 2026 19:42:27 +0800
Subject: [PATCH] Add regression test for object type (#19309)

---
 .../typescript/object-type/comments/11307.ts  | 20 +++++++
 .../__snapshots__/format.test.js.snap         | 52 +++++++++++++++++++
 .../object-type/comments/format.test.js       |  1 +
 .../__snapshots__/format.test.js.snap         |  0
 .../object-multiline/format.test.js           |  0
 .../object-multiline/multiline.ts             |  0
 6 files changed, 73 insertions(+)
 create mode 100644 tests/format/typescript/object-type/comments/11307.ts
 create mode 100644 tests/format/typescript/object-type/comments/__snapshots__/format.test.js.snap
 create mode 100644 tests/format/typescript/object-type/comments/format.test.js
 rename tests/format/typescript/{ => object-type}/object-multiline/__snapshots__/format.test.js.snap (100%)
 rename tests/format/typescript/{ => object-type}/object-multiline/format.test.js (100%)
 rename tests/format/typescript/{ => object-type}/object-multiline/multiline.ts (100%)

diff --git a/tests/format/typescript/object-type/comments/11307.ts b/tests/format/typescript/object-type/comments/11307.ts
new file mode 100644
index 000000000..3e5b6f331
--- /dev/null
+++ b/tests/format/typescript/object-type/comments/11307.ts
@@ -0,0 +1,20 @@
+type T1 = (/** K */{
+  K: number;
+})
+type T2 = /** K */{
+  K: number;
+}
+
+const O1 = (/** K */{
+  K: number,
+})
+const O2 = /** K */{
+  K: number,
+}
+
+o = (/** K */{
+  K: number,
+})
+o = /** K */{
+  K: number,
+}
diff --git a/tests/format/typescript/object-type/comments/__snapshots__/format.test.js.snap b/tests/format/typescript/object-type/comments/__snapshots__/format.test.js.snap
new file mode 100644
index 000000000..87bc8e47d
--- /dev/null
+++ b/tests/format/typescript/object-type/comments/__snapshots__/format.test.js.snap
@@ -0,0 +1,52 @@
+// Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
+
+exports[`11307.ts format 1`] = `
+====================================options=====================================
+parsers: ["typescript"]
+                                                      printWidth: 80 (default) |
+=====================================input======================================
+type T1 = (/** K */{
+  K: number;
+})
+type T2 = /** K */{
+  K: number;
+}
+
+const O1 = (/** K */{
+  K: number,
+})
+const O2 = /** K */{
+  K: number,
+}
+
+o = (/** K */{
+  K: number,
+})
+o = /** K */{
+  K: number,
+}
+
+=====================================output=====================================
+type T1 = /** K */ {
+  K: number;
+};
+type T2 = /** K */ {
+  K: number;
+};
+
+const O1 = /** K */ {
+  K: number,
+};
+const O2 = /** K */ {
+  K: number,
+};
+
+o = /** K */ {
+  K: number,
+};
+o = /** K */ {
+  K: number,
+};
+
+================================================================================
+`;
diff --git a/tests/format/typescript/object-type/comments/format.test.js b/tests/format/typescript/object-type/comments/format.test.js
new file mode 100644
index 000000000..116dcbd78
--- /dev/null
+++ b/tests/format/typescript/object-type/comments/format.test.js
@@ -0,0 +1 @@
+runFormatTest(import.meta, ["typescript"]);
diff --git a/tests/format/typescript/object-multiline/__snapshots__/format.test.js.snap b/tests/format/typescript/object-type/object-multiline/__snapshots__/format.test.js.snap
similarity index 100%
rename from tests/format/typescript/object-multiline/__snapshots__/format.test.js.snap
rename to tests/format/typescript/object-type/object-multiline/__snapshots__/format.test.js.snap
diff --git a/tests/format/typescript/object-multiline/format.test.js b/tests/format/typescript/object-type/object-multiline/format.test.js
similarity index 100%
rename from tests/format/typescript/object-multiline/format.test.js
rename to tests/format/typescript/object-type/object-multiline/format.test.js
diff --git a/tests/format/typescript/object-multiline/multiline.ts b/tests/format/typescript/object-type/object-multiline/multiline.ts
similarity index 100%
rename from tests/format/typescript/object-multiline/multiline.ts
rename to tests/format/typescript/object-type/object-multiline/multiline.ts