From d72ed3c0b0fcf1f3c5f2b06d430c5e9c2ea6ca6f Mon Sep 17 00:00:00 2001
From: Richard Knoll <riknoll@microsoft.com>
Date: Fri, 26 Aug 2016 16:52:25 -0700
Subject: [PATCH] Check for this symbol before getting display parts

---
 src/services/services.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/services/services.ts b/src/services/services.ts
index dd99c0dba52..c19eb487d75 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -6570,8 +6570,8 @@ namespace ts {
 
                 const thisOrSuperSymbol = typeChecker.getSymbolAtLocation(thisOrSuperKeyword);
 
-                const { displayParts } =  getSymbolDisplayPartsDocumentationAndSymbolKind(
-                    thisOrSuperSymbol, thisOrSuperKeyword.getSourceFile(), getContainerNode(thisOrSuperKeyword), thisOrSuperKeyword);
+                const displayParts = thisOrSuperSymbol && getSymbolDisplayPartsDocumentationAndSymbolKind(
+                    thisOrSuperSymbol, thisOrSuperKeyword.getSourceFile(), getContainerNode(thisOrSuperKeyword), thisOrSuperKeyword).displayParts;
 
                 return [{
                     definition: {