From 2777c3a8905decb87d1d5ff2e1db22aeeaa63a81 Mon Sep 17 00:00:00 2001
From: Sheetal Nandi <shkamat@microsoft.com>
Date: Wed, 21 Feb 2018 11:01:58 -0800
Subject: [PATCH] Close the file watcher if present for the source file

---
 src/compiler/watch.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/compiler/watch.ts b/src/compiler/watch.ts
index 7a98c43dd04..ff21c750089 100644
--- a/src/compiler/watch.ts
+++ b/src/compiler/watch.ts
@@ -749,6 +749,9 @@ namespace ts {
                     (missingFilePathsRequestedForRelease || (missingFilePathsRequestedForRelease = [])).push(oldSourceFile.path);
                 }
                 else if ((hostSourceFileInfo as FilePresentOnHost).sourceFile === oldSourceFile) {
+                    if ((hostSourceFileInfo as FilePresentOnHost).fileWatcher) {
+                        (hostSourceFileInfo as FilePresentOnHost).fileWatcher.close();
+                    }
                     sourceFilesCache.delete(oldSourceFile.path);
                     resolutionCache.removeResolutionsOfFile(oldSourceFile.path);
                 }