From 77215708618bb0e9425d84ce5c95003e5684f8ac Mon Sep 17 00:00:00 2001
From: Ryan Cavanaugh <ryanca@microsoft.com>
Date: Mon, 24 Feb 2020 14:37:44 -0800
Subject: [PATCH] Harden telemetryOnOpenFile

---
 src/server/editorServices.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/server/editorServices.ts b/src/server/editorServices.ts
index 4b47131d10c..a697df4442f 100644
--- a/src/server/editorServices.ts
+++ b/src/server/editorServices.ts
@@ -3096,8 +3096,9 @@ namespace ts.server {
                 return;
             }
 
-            const info: OpenFileInfo = { checkJs: !!project.getSourceFile(scriptInfo.path)!.checkJsDirective };
-            this.eventHandler({ eventName: OpenFileInfoTelemetryEvent, data: { info } });
+            const sourceFile = project.getSourceFile(scriptInfo.path);
+            const checkJs = !!sourceFile && !!sourceFile.checkJsDirective;
+            this.eventHandler({ eventName: OpenFileInfoTelemetryEvent, data: { info: { checkJs } } });
         }
 
         /**