From d0545ffee85bf35accc839777065d85d032f51a7 Mon Sep 17 00:00:00 2001
From: zhengbli <zhengbli@microsoft.com>
Date: Thu, 24 Mar 2016 14:16:38 -0700
Subject: [PATCH 1/2] Explicitly exclude . and .. for fs.readdirSync

---
 src/compiler/sys.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/compiler/sys.ts b/src/compiler/sys.ts
index 0bb87cc5a40fd..3f243b41d0217 100644
--- a/src/compiler/sys.ts
+++ b/src/compiler/sys.ts
@@ -495,7 +495,9 @@ namespace ts {
                 visitDirectory(path);
                 return result;
                 function visitDirectory(path: string) {
-                    const files = _fs.readdirSync(path || ".").sort();
+                    // This filtering is necessary because on some file system node fails to exclude 
+                    // "." and "..". See https://github.com/nodejs/node/issues/4002
+                    const files = filter(<string[]>_fs.readdirSync(path || "."), f => f !== "." && f !== "..").sort();
                     const directories: string[] = [];
                     for (const current of files) {
                         const name = combinePaths(path, current);

From ddbfb7b961dfb4489ca71866a5e1d7878824ae67 Mon Sep 17 00:00:00 2001
From: zhengbli <zhengbli@microsoft.com>
Date: Thu, 24 Mar 2016 15:56:13 -0700
Subject: [PATCH 2/2] refactor

---
 src/compiler/sys.ts | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/compiler/sys.ts b/src/compiler/sys.ts
index 3f243b41d0217..1ced01fb3497e 100644
--- a/src/compiler/sys.ts
+++ b/src/compiler/sys.ts
@@ -495,11 +495,14 @@ namespace ts {
                 visitDirectory(path);
                 return result;
                 function visitDirectory(path: string) {
-                    // This filtering is necessary because on some file system node fails to exclude 
-                    // "." and "..". See https://github.com/nodejs/node/issues/4002
-                    const files = filter(<string[]>_fs.readdirSync(path || "."), f => f !== "." && f !== "..").sort();
+                    const files = _fs.readdirSync(path || ".").sort();
                     const directories: string[] = [];
                     for (const current of files) {
+                        // This is necessary because on some file system node fails to exclude 
+                        // "." and "..". See https://github.com/nodejs/node/issues/4002
+                        if (current === "." || current === "..") {
+                            continue;
+                        }
                         const name = combinePaths(path, current);
                         if (!contains(exclude, getCanonicalPath(name))) {
                             const stat = _fs.statSync(name);