From f2163fecbd2d8b988f1f1897f8646e28af2742ba Mon Sep 17 00:00:00 2001
From: Arthur Ozga <aozgaa-ms@outlook.com>
Date: Thu, 1 Jun 2017 11:09:08 -0700
Subject: [PATCH] use length helper

---
 src/services/codefixes/helpers.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/services/codefixes/helpers.ts b/src/services/codefixes/helpers.ts
index c2c51d5c788..81aae4c0e5e 100644
--- a/src/services/codefixes/helpers.ts
+++ b/src/services/codefixes/helpers.ts
@@ -147,7 +147,7 @@ namespace ts.codefix {
 
         let typeParameters: TypeParameterDeclaration[];
         if (includeTypeScriptSyntax) {
-            const typeArgCount = callExpression.typeArguments ? callExpression.typeArguments.length : 0;
+            const typeArgCount = length(callExpression.typeArguments);
             for (let i = 0; i < typeArgCount; i++) {
                 const name = typeArgCount < 8 ? String.fromCharCode(CharacterCodes.T + i) : `T${i}`;
                 const typeParameter = createTypeParameterDeclaration(name, /*constraint*/ undefined, /*defaultType*/ undefined);