From e82cf92fb46459c207fa6c19cc02b710392e8f35 Mon Sep 17 00:00:00 2001
From: fisker Cheung <lionkay@gmail.com>
Date: Thu, 29 Jan 2026 11:57:22 +0800
Subject: [PATCH] Add test for #6858 (#18780)

---
 .../10732.ts                                  |  0
 .../18041.ts                                  |  0
 .../18604.ts                                  |  0
 .../__snapshots__/format.test.js.snap         | 46 +++++++++++++++++++
 .../class-method.ts                           |  0
 .../__snapshots__/format.test.js.snap         |  0
 .../consistent/flow-only.ts                   |  0
 .../consistent/format.test.js                 |  0
 .../consistent/issue-9501.ts                  |  0
 .../consistent/simple-types.ts                |  0
 .../consistent/template-literal-types.ts      |  0
 .../consistent/typescript-only.ts             |  0
 .../const.ts                                  |  0
 .../constraints-and-default-2.ts              |  0
 .../constraints-and-default.ts                |  0
 .../format.test.js                            |  0
 .../type-parameters-arguments/issue-6858.ts   | 17 +++++++
 .../long-function-arg.ts                      |  0
 .../__snapshots__/format.test.js.snap         |  0
 .../print-width-120/format.test.js            |  0
 .../print-width-120/issue-7542.tsx            |  0
 .../tagged-template-expression.ts             |  0
 .../__snapshots__/format.test.js.snap         |  0
 .../trailing-comma/format.test.js             |  0
 .../trailing-comma/type-paramters.ts          |  0
 25 files changed, 63 insertions(+)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/10732.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/18041.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/18604.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/__snapshots__/format.test.js.snap (96%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/class-method.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/consistent/__snapshots__/format.test.js.snap (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/consistent/flow-only.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/consistent/format.test.js (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/consistent/issue-9501.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/consistent/simple-types.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/consistent/template-literal-types.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/consistent/typescript-only.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/const.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/constraints-and-default-2.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/constraints-and-default.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/format.test.js (100%)
 create mode 100644 tests/format/typescript/type-parameters-arguments/issue-6858.ts
 rename tests/format/typescript/{type-params => type-parameters-arguments}/long-function-arg.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/print-width-120/__snapshots__/format.test.js.snap (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/print-width-120/format.test.js (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/print-width-120/issue-7542.tsx (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/tagged-template-expression.ts (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/trailing-comma/__snapshots__/format.test.js.snap (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/trailing-comma/format.test.js (100%)
 rename tests/format/typescript/{type-params => type-parameters-arguments}/trailing-comma/type-paramters.ts (100%)

diff --git a/tests/format/typescript/type-params/10732.ts b/tests/format/typescript/type-parameters-arguments/10732.ts
similarity index 100%
rename from tests/format/typescript/type-params/10732.ts
rename to tests/format/typescript/type-parameters-arguments/10732.ts
diff --git a/tests/format/typescript/type-params/18041.ts b/tests/format/typescript/type-parameters-arguments/18041.ts
similarity index 100%
rename from tests/format/typescript/type-params/18041.ts
rename to tests/format/typescript/type-parameters-arguments/18041.ts
diff --git a/tests/format/typescript/type-params/18604.ts b/tests/format/typescript/type-parameters-arguments/18604.ts
similarity index 100%
rename from tests/format/typescript/type-params/18604.ts
rename to tests/format/typescript/type-parameters-arguments/18604.ts
diff --git a/tests/format/typescript/type-params/__snapshots__/format.test.js.snap b/tests/format/typescript/type-parameters-arguments/__snapshots__/format.test.js.snap
similarity index 96%
rename from tests/format/typescript/type-params/__snapshots__/format.test.js.snap
rename to tests/format/typescript/type-parameters-arguments/__snapshots__/format.test.js.snap
index 465f61cb8..069e410b5 100644
--- a/tests/format/typescript/type-params/__snapshots__/format.test.js.snap
+++ b/tests/format/typescript/type-parameters-arguments/__snapshots__/format.test.js.snap
@@ -712,6 +712,52 @@ function makeChainWalker2<
 ================================================================================
 `;
 
+exports[`issue-6858.ts format 1`] = `
+====================================options=====================================
+parsers: ["typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+testFunc<
+//#region
+{
+    testProp: number
+}
+//#endregion
+>(parserFunc\`
+Some multiline string
+In here\`);
+
+testFunc(
+//#region
+{
+    testProp: number
+}
+//#endregion
+)
+
+=====================================output=====================================
+testFunc<
+  //#region
+  {
+    testProp: number;
+  }
+  //#endregion
+>(parserFunc\`
+Some multiline string
+In here\`);
+
+testFunc(
+  //#region
+  {
+    testProp: number,
+  },
+  //#endregion
+);
+
+================================================================================
+`;
+
 exports[`long-function-arg.ts format 1`] = `
 ====================================options=====================================
 parsers: ["typescript"]
diff --git a/tests/format/typescript/type-params/class-method.ts b/tests/format/typescript/type-parameters-arguments/class-method.ts
similarity index 100%
rename from tests/format/typescript/type-params/class-method.ts
rename to tests/format/typescript/type-parameters-arguments/class-method.ts
diff --git a/tests/format/typescript/type-params/consistent/__snapshots__/format.test.js.snap b/tests/format/typescript/type-parameters-arguments/consistent/__snapshots__/format.test.js.snap
similarity index 100%
rename from tests/format/typescript/type-params/consistent/__snapshots__/format.test.js.snap
rename to tests/format/typescript/type-parameters-arguments/consistent/__snapshots__/format.test.js.snap
diff --git a/tests/format/typescript/type-params/consistent/flow-only.ts b/tests/format/typescript/type-parameters-arguments/consistent/flow-only.ts
similarity index 100%
rename from tests/format/typescript/type-params/consistent/flow-only.ts
rename to tests/format/typescript/type-parameters-arguments/consistent/flow-only.ts
diff --git a/tests/format/typescript/type-params/consistent/format.test.js b/tests/format/typescript/type-parameters-arguments/consistent/format.test.js
similarity index 100%
rename from tests/format/typescript/type-params/consistent/format.test.js
rename to tests/format/typescript/type-parameters-arguments/consistent/format.test.js
diff --git a/tests/format/typescript/type-params/consistent/issue-9501.ts b/tests/format/typescript/type-parameters-arguments/consistent/issue-9501.ts
similarity index 100%
rename from tests/format/typescript/type-params/consistent/issue-9501.ts
rename to tests/format/typescript/type-parameters-arguments/consistent/issue-9501.ts
diff --git a/tests/format/typescript/type-params/consistent/simple-types.ts b/tests/format/typescript/type-parameters-arguments/consistent/simple-types.ts
similarity index 100%
rename from tests/format/typescript/type-params/consistent/simple-types.ts
rename to tests/format/typescript/type-parameters-arguments/consistent/simple-types.ts
diff --git a/tests/format/typescript/type-params/consistent/template-literal-types.ts b/tests/format/typescript/type-parameters-arguments/consistent/template-literal-types.ts
similarity index 100%
rename from tests/format/typescript/type-params/consistent/template-literal-types.ts
rename to tests/format/typescript/type-parameters-arguments/consistent/template-literal-types.ts
diff --git a/tests/format/typescript/type-params/consistent/typescript-only.ts b/tests/format/typescript/type-parameters-arguments/consistent/typescript-only.ts
similarity index 100%
rename from tests/format/typescript/type-params/consistent/typescript-only.ts
rename to tests/format/typescript/type-parameters-arguments/consistent/typescript-only.ts
diff --git a/tests/format/typescript/type-params/const.ts b/tests/format/typescript/type-parameters-arguments/const.ts
similarity index 100%
rename from tests/format/typescript/type-params/const.ts
rename to tests/format/typescript/type-parameters-arguments/const.ts
diff --git a/tests/format/typescript/type-params/constraints-and-default-2.ts b/tests/format/typescript/type-parameters-arguments/constraints-and-default-2.ts
similarity index 100%
rename from tests/format/typescript/type-params/constraints-and-default-2.ts
rename to tests/format/typescript/type-parameters-arguments/constraints-and-default-2.ts
diff --git a/tests/format/typescript/type-params/constraints-and-default.ts b/tests/format/typescript/type-parameters-arguments/constraints-and-default.ts
similarity index 100%
rename from tests/format/typescript/type-params/constraints-and-default.ts
rename to tests/format/typescript/type-parameters-arguments/constraints-and-default.ts
diff --git a/tests/format/typescript/type-params/format.test.js b/tests/format/typescript/type-parameters-arguments/format.test.js
similarity index 100%
rename from tests/format/typescript/type-params/format.test.js
rename to tests/format/typescript/type-parameters-arguments/format.test.js
diff --git a/tests/format/typescript/type-parameters-arguments/issue-6858.ts b/tests/format/typescript/type-parameters-arguments/issue-6858.ts
new file mode 100644
index 000000000..c5c536954
--- /dev/null
+++ b/tests/format/typescript/type-parameters-arguments/issue-6858.ts
@@ -0,0 +1,17 @@
+testFunc<
+//#region
+{
+    testProp: number
+}
+//#endregion
+>(parserFunc`
+Some multiline string
+In here`);
+
+testFunc(
+//#region
+{
+    testProp: number
+}
+//#endregion
+)
diff --git a/tests/format/typescript/type-params/long-function-arg.ts b/tests/format/typescript/type-parameters-arguments/long-function-arg.ts
similarity index 100%
rename from tests/format/typescript/type-params/long-function-arg.ts
rename to tests/format/typescript/type-parameters-arguments/long-function-arg.ts
diff --git a/tests/format/typescript/type-params/print-width-120/__snapshots__/format.test.js.snap b/tests/format/typescript/type-parameters-arguments/print-width-120/__snapshots__/format.test.js.snap
similarity index 100%
rename from tests/format/typescript/type-params/print-width-120/__snapshots__/format.test.js.snap
rename to tests/format/typescript/type-parameters-arguments/print-width-120/__snapshots__/format.test.js.snap
diff --git a/tests/format/typescript/type-params/print-width-120/format.test.js b/tests/format/typescript/type-parameters-arguments/print-width-120/format.test.js
similarity index 100%
rename from tests/format/typescript/type-params/print-width-120/format.test.js
rename to tests/format/typescript/type-parameters-arguments/print-width-120/format.test.js
diff --git a/tests/format/typescript/type-params/print-width-120/issue-7542.tsx b/tests/format/typescript/type-parameters-arguments/print-width-120/issue-7542.tsx
similarity index 100%
rename from tests/format/typescript/type-params/print-width-120/issue-7542.tsx
rename to tests/format/typescript/type-parameters-arguments/print-width-120/issue-7542.tsx
diff --git a/tests/format/typescript/type-params/tagged-template-expression.ts b/tests/format/typescript/type-parameters-arguments/tagged-template-expression.ts
similarity index 100%
rename from tests/format/typescript/type-params/tagged-template-expression.ts
rename to tests/format/typescript/type-parameters-arguments/tagged-template-expression.ts
diff --git a/tests/format/typescript/type-params/trailing-comma/__snapshots__/format.test.js.snap b/tests/format/typescript/type-parameters-arguments/trailing-comma/__snapshots__/format.test.js.snap
similarity index 100%
rename from tests/format/typescript/type-params/trailing-comma/__snapshots__/format.test.js.snap
rename to tests/format/typescript/type-parameters-arguments/trailing-comma/__snapshots__/format.test.js.snap
diff --git a/tests/format/typescript/type-params/trailing-comma/format.test.js b/tests/format/typescript/type-parameters-arguments/trailing-comma/format.test.js
similarity index 100%
rename from tests/format/typescript/type-params/trailing-comma/format.test.js
rename to tests/format/typescript/type-parameters-arguments/trailing-comma/format.test.js
diff --git a/tests/format/typescript/type-params/trailing-comma/type-paramters.ts b/tests/format/typescript/type-parameters-arguments/trailing-comma/type-paramters.ts
similarity index 100%
rename from tests/format/typescript/type-params/trailing-comma/type-paramters.ts
rename to tests/format/typescript/type-parameters-arguments/trailing-comma/type-paramters.ts