Remove unrelated changes

src/compiler/sys.ts

@@ -605,6 +605,8 @@ namespace ts {
             return getWScriptSystem();
         }
         else if (typeof process !== "undefined" && process.nextTick && !process.browser && typeof require !== "undefined") {
+            // process and process.nextTick checks if current environment is node-like
+            // process.browser check excludes webpack and browserify
             return getNodeSystem();
         }
         else if (typeof ChakraHost !== "undefined") {

src/harness/harness.ts

@@ -1593,7 +1593,7 @@ namespace Harness {
         return { unitName: libFile, content: io.readFile(libFile) };
     }
 
-    if (Error) (<any>Error).stackTraceLimit = 25;
+    if (Error) (<any>Error).stackTraceLimit = 1;
 }
 
 // TODO: not sure why Utils.evalFile isn't working with this, eventually will concat it like old compiler instead of eval

src/services/services.ts

@@ -2188,6 +2188,7 @@ namespace ts {
                 }
                 return true;
             }
+
             return false;
         }
 
@@ -2370,7 +2371,6 @@ namespace ts {
 
                 // skip open bracket
                 token = scanner.scan();
-
                 let i = 0;
                 // scan until ']' or EOF
                 while (token !== SyntaxKind.CloseBracketToken && token !== SyntaxKind.EndOfFileToken) {