From 46de5067b038536545dd9d7f956971e9160d15e8 Mon Sep 17 00:00:00 2001
From: Anders Hejlsberg <andersh@microsoft.com>
Date: Mon, 17 Sep 2018 09:06:38 -0700
Subject: [PATCH] Fix resulting issue in compiler

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

diff --git a/src/services/importTracker.ts b/src/services/importTracker.ts
index 86bee92eaec..9872b378403 100644
--- a/src/services/importTracker.ts
+++ b/src/services/importTracker.ts
@@ -385,7 +385,7 @@ namespace ts.FindAllReferences {
     }
 
     /** Iterates over all statements at the top level or in module declarations. Returns the first truthy result. */
-    function forEachPossibleImportOrExportStatement<T>(sourceFileLike: SourceFileLike, action: (statement: Statement) => T): T | undefined {
+    function forEachPossibleImportOrExportStatement<T>(sourceFileLike: SourceFileLike, action: (statement: Statement) => T) {
         return forEach(sourceFileLike.kind === SyntaxKind.SourceFile ? sourceFileLike.statements : sourceFileLike.body!.statements, statement => // TODO: GH#18217
             action(statement) || (isAmbientModuleDeclaration(statement) && forEach(statement.body && statement.body.statements, action)));
     }