From 13a8dc11b03188563b3107400c9b6ddd3d872c9c Mon Sep 17 00:00:00 2001
From: Andy Hanson <anhans@microsoft.com>
Date: Fri, 7 Oct 2016 08:31:53 -0700
Subject: [PATCH] Fix array conditional

---
 src/compiler/program.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index e300ac22fe5..8e39731abc1 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -358,7 +358,7 @@ namespace ts {
             // load type declarations specified via 'types' argument or implicitly from types/ and node_modules/@types folders
             const typeReferences: string[] = getAutomaticTypeDirectiveNames(options, host);
 
-            if (typeReferences) {
+            if (typeReferences.length) {
                 // This containingFilename needs to match with the one used in managed-side
                 const containingFilename = combinePaths(host.getCurrentDirectory(), "__inferred type names__.ts");
                 const resolutions = resolveTypeReferenceDirectiveNamesWorker(typeReferences, containingFilename);