From fcc1929c1626c0fff39ef531821184b9c5d87fd3 Mon Sep 17 00:00:00 2001
From: Alexander T <alexander.tarasyuk@outlook.com>
Date: Wed, 12 Aug 2020 06:39:27 +0000
Subject: [PATCH] Cherry-pick PR #40005 into release-4.0

Component commits:
fa1ed85593 feat(40004): make isNamedTupleMember public
---
 src/compiler/factory/nodeTests.ts                  | 4 ++++
 tests/baselines/reference/api/tsserverlibrary.d.ts | 1 +
 tests/baselines/reference/api/typescript.d.ts      | 1 +
 3 files changed, 6 insertions(+)

diff --git a/src/compiler/factory/nodeTests.ts b/src/compiler/factory/nodeTests.ts
index 185b4d61e381a..9de08306fa167 100644
--- a/src/compiler/factory/nodeTests.ts
+++ b/src/compiler/factory/nodeTests.ts
@@ -177,6 +177,10 @@ namespace ts {
         return node.kind === SyntaxKind.TupleType;
     }
 
+    export function isNamedTupleMember(node: Node): node is NamedTupleMember {
+        return node.kind === SyntaxKind.NamedTupleMember;
+    }
+
     export function isOptionalTypeNode(node: Node): node is OptionalTypeNode {
         return node.kind === SyntaxKind.OptionalType;
     }
diff --git a/tests/baselines/reference/api/tsserverlibrary.d.ts b/tests/baselines/reference/api/tsserverlibrary.d.ts
index 2600bfaea347f..aad052326e024 100644
--- a/tests/baselines/reference/api/tsserverlibrary.d.ts
+++ b/tests/baselines/reference/api/tsserverlibrary.d.ts
@@ -4306,6 +4306,7 @@ declare namespace ts {
     function isTypeLiteralNode(node: Node): node is TypeLiteralNode;
     function isArrayTypeNode(node: Node): node is ArrayTypeNode;
     function isTupleTypeNode(node: Node): node is TupleTypeNode;
+    function isNamedTupleMember(node: Node): node is NamedTupleMember;
     function isOptionalTypeNode(node: Node): node is OptionalTypeNode;
     function isRestTypeNode(node: Node): node is RestTypeNode;
     function isUnionTypeNode(node: Node): node is UnionTypeNode;
diff --git a/tests/baselines/reference/api/typescript.d.ts b/tests/baselines/reference/api/typescript.d.ts
index fefe6eda25ff9..67e35224b4b96 100644
--- a/tests/baselines/reference/api/typescript.d.ts
+++ b/tests/baselines/reference/api/typescript.d.ts
@@ -4306,6 +4306,7 @@ declare namespace ts {
     function isTypeLiteralNode(node: Node): node is TypeLiteralNode;
     function isArrayTypeNode(node: Node): node is ArrayTypeNode;
     function isTupleTypeNode(node: Node): node is TupleTypeNode;
+    function isNamedTupleMember(node: Node): node is NamedTupleMember;
     function isOptionalTypeNode(node: Node): node is OptionalTypeNode;
     function isRestTypeNode(node: Node): node is RestTypeNode;
     function isUnionTypeNode(node: Node): node is UnionTypeNode;