From e62f960648921ccb465a583c8e8ef605e1658884 Mon Sep 17 00:00:00 2001
From: Oleksandr T <oleksandr.tarasiuk@outlook.com>
Date: Thu, 31 Mar 2022 01:36:47 +0300
Subject: [PATCH] fix(47733): omit JSDoc comment template suggestion on node
 with existing JSDoc (#47748)

---
 src/services/jsDoc.ts                               |  3 ++-
 .../docCommentTemplateWithExistingJSDoc.ts          | 13 +++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 tests/cases/fourslash/docCommentTemplateWithExistingJSDoc.ts

diff --git a/src/services/jsDoc.ts b/src/services/jsDoc.ts
index 43600422a5c..ca6b9cc047d 100644
--- a/src/services/jsDoc.ts
+++ b/src/services/jsDoc.ts
@@ -353,7 +353,8 @@ namespace ts.JsDoc {
         }
 
         const { commentOwner, parameters, hasReturn } = commentOwnerInfo;
-        if (commentOwner.getStart(sourceFile) < position) {
+        const commentOwnerJSDoc = hasJSDocNodes(commentOwner) && commentOwner.jsDoc ? lastOrUndefined(commentOwner.jsDoc) : undefined;
+        if (commentOwner.getStart(sourceFile) < position || commentOwnerJSDoc && commentOwnerJSDoc !== existingDocComment) {
             return undefined;
         }
 
diff --git a/tests/cases/fourslash/docCommentTemplateWithExistingJSDoc.ts b/tests/cases/fourslash/docCommentTemplateWithExistingJSDoc.ts
new file mode 100644
index 00000000000..a2dedc929ff
--- /dev/null
+++ b/tests/cases/fourslash/docCommentTemplateWithExistingJSDoc.ts
@@ -0,0 +1,13 @@
+/// <reference path='fourslash.ts' />
+
+/////** /**/ */
+////
+/////**
+//// * @param {string} a
+//// * @param {string} b
+//// */
+////function foo(a, b) {
+////    return a + b;
+////}
+
+verify.noDocCommentTemplateAt("");