From 13b7af6ea0f05be0e3deadab36e0bcad8662e082 Mon Sep 17 00:00:00 2001
From: Suhas <suhasdeshpande@users.noreply.github.com>
Date: Mon, 17 Jun 2019 23:14:02 -0700
Subject: [PATCH 1/3] fix tsserver picking hidden files created by emacs

Saw this good for first timers. I followed what @sheetalkamat suggested.
#31916
---
 src/compiler/sys.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/sys.ts b/src/compiler/sys.ts
index b1923a73a27..5abc19cdbc4 100644
--- a/src/compiler/sys.ts
+++ b/src/compiler/sys.ts
@@ -330,7 +330,7 @@ namespace ts {
     }
 
     /*@internal*/
-    export const ignoredPaths = ["/node_modules/.", "/.git"];
+    export const ignoredPaths = ["/node_modules/.", "/.git", "/.#"];
 
     /*@internal*/
     export interface RecursiveDirectoryWatcherHost {

From 8a11f1556928bcd20182aa70188d26c22fd57051 Mon Sep 17 00:00:00 2001
From: Suhas Deshpande <suhas@modeanalytics.com>
Date: Tue, 18 Jun 2019 22:50:40 -0700
Subject: [PATCH 2/3] Add unit test

---
 .../unittests/tsserver/watchEnvironment.ts    | 28 +++++++++++--------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/src/testRunner/unittests/tsserver/watchEnvironment.ts b/src/testRunner/unittests/tsserver/watchEnvironment.ts
index bc8e84a8025..33a61bedfb2 100644
--- a/src/testRunner/unittests/tsserver/watchEnvironment.ts
+++ b/src/testRunner/unittests/tsserver/watchEnvironment.ts
@@ -171,33 +171,37 @@ namespace ts.projectSystem {
             path: `${projectFolder}/node_modules/.cache/someFile.d.ts`,
             content: ""
         };
-        host.ensureFileOrFolder(nodeModulesIgnoredFileFromIgnoreDirectory);
-        host.checkTimeoutQueueLength(0);
-        verifyProject();
 
         const nodeModulesIgnoredFile: File = {
             path: `${projectFolder}/node_modules/.cacheFile.ts`,
             content: ""
         };
-        host.ensureFileOrFolder(nodeModulesIgnoredFile);
-        host.checkTimeoutQueueLength(0);
-        verifyProject();
 
         const gitIgnoredFileFromIgnoreDirectory: File = {
             path: `${projectFolder}/.git/someFile.d.ts`,
             content: ""
         };
-        host.ensureFileOrFolder(gitIgnoredFileFromIgnoreDirectory);
-        host.checkTimeoutQueueLength(0);
-        verifyProject();
 
         const gitIgnoredFile: File = {
             path: `${projectFolder}/.gitCache.d.ts`,
             content: ""
         };
-        host.ensureFileOrFolder(gitIgnoredFile);
-        host.checkTimeoutQueueLength(0);
-        verifyProject();
+        const emacsIgnoredFileFromIgnoreDirectory: File = {
+            path: `${projectFolder}/src/.#field.ts`,
+            content: ""
+        };
+
+        [
+            nodeModulesIgnoredFileFromIgnoreDirectory,
+            nodeModulesIgnoredFile,
+            gitIgnoredFileFromIgnoreDirectory,
+            gitIgnoredFile,
+            emacsIgnoredFileFromIgnoreDirectory
+        ].forEach(ignoredEntity => {
+            host.ensureFileOrFolder(ignoredEntity);
+            host.checkTimeoutQueueLength(0);
+            verifyProject();
+        })
 
         function verifyProject() {
             checkWatchedDirectories(host, emptyArray, /*recursive*/ true);

From f8004a33dd710efa245c856b2652c44ea567210b Mon Sep 17 00:00:00 2001
From: Suhas Deshpande <suhas@modeanalytics.com>
Date: Tue, 18 Jun 2019 23:17:58 -0700
Subject: [PATCH 3/3] semi-colon

---
 src/testRunner/unittests/tsserver/watchEnvironment.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/testRunner/unittests/tsserver/watchEnvironment.ts b/src/testRunner/unittests/tsserver/watchEnvironment.ts
index 33a61bedfb2..5e776aa9908 100644
--- a/src/testRunner/unittests/tsserver/watchEnvironment.ts
+++ b/src/testRunner/unittests/tsserver/watchEnvironment.ts
@@ -201,7 +201,7 @@ namespace ts.projectSystem {
             host.ensureFileOrFolder(ignoredEntity);
             host.checkTimeoutQueueLength(0);
             verifyProject();
-        })
+        });
 
         function verifyProject() {
             checkWatchedDirectories(host, emptyArray, /*recursive*/ true);