From 708caf9a7262e71d560afc4c78580a4fd09adeaf Mon Sep 17 00:00:00 2001
From: Mohamed Hegazy <mhegazy@microsoft.com>
Date: Tue, 13 Mar 2018 11:03:12 -0700
Subject: [PATCH] Do not use unguarded process in tsc.ts

---
 src/compiler/sys.ts                                        | 6 ++++++
 src/compiler/tsc.ts                                        | 7 ++++---
 .../user/TypeScript-Node-Starter/TypeScript-Node-Starter   | 2 +-
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/compiler/sys.ts b/src/compiler/sys.ts
index 4f62cfdfe2d..f613a2fc927 100644
--- a/src/compiler/sys.ts
+++ b/src/compiler/sys.ts
@@ -456,6 +456,7 @@ namespace ts {
         setTimeout?(callback: (...args: any[]) => void, ms: number, ...args: any[]): any;
         clearTimeout?(timeoutId: any): void;
         clearScreen?(): void;
+        /*@internal*/ setBlocking?(): void;
     }
 
     export interface FileWatcher {
@@ -614,6 +615,11 @@ namespace ts {
                 clearTimeout,
                 clearScreen: () => {
                     process.stdout.write("\x1Bc");
+                },
+                setBlocking: () => {
+                    if (process.stdout && process.stdout._handle && process.stdout._handle.setBlocking) {
+                        process.stdout._handle.setBlocking(true);
+                    }
                 }
             };
             return nodeSystem;
diff --git a/src/compiler/tsc.ts b/src/compiler/tsc.ts
index 3a340f049f8..04725cebabe 100644
--- a/src/compiler/tsc.ts
+++ b/src/compiler/tsc.ts
@@ -399,8 +399,9 @@ if (ts.Debug.isDebugging) {
 if (ts.sys.tryEnableSourceMapsForHost && /^development$/i.test(ts.sys.getEnvironmentVariable("NODE_ENV"))) {
     ts.sys.tryEnableSourceMapsForHost();
 }
-declare var process: any;
-if (process && process.stdout && process.stdout._handle && process.stdout._handle.setBlocking) {
-    process.stdout._handle.setBlocking(true);
+
+if (ts.sys.setBlocking) {
+    ts.sys.setBlocking();
 }
+
 ts.executeCommandLine(ts.sys.args);
diff --git a/tests/cases/user/TypeScript-Node-Starter/TypeScript-Node-Starter b/tests/cases/user/TypeScript-Node-Starter/TypeScript-Node-Starter
index ed149eb0c78..40bdb4eadab 160000
--- a/tests/cases/user/TypeScript-Node-Starter/TypeScript-Node-Starter
+++ b/tests/cases/user/TypeScript-Node-Starter/TypeScript-Node-Starter
@@ -1 +1 @@
-Subproject commit ed149eb0c787b1195a95b44105822c64bb6eb636
+Subproject commit 40bdb4eadabc9fbed7d83e3f26817a931c0763b6