diff --git a/node/node-4-tests.ts b/node/node-4-tests.ts
index 26e201c910..f21c3b58f8 100644
--- a/node/node-4-tests.ts
+++ b/node/node-4-tests.ts
@@ -24,6 +24,19 @@ import * as string_decoder from "string_decoder";
 // Specifically test buffer module regression.
 import {Buffer as ImportedBuffer, SlowBuffer as ImportedSlowBuffer} from "buffer";
 
+//////////////////////////////////////////////////////////
+/// Global Tests : https://nodejs.org/api/global.html  ///
+//////////////////////////////////////////////////////////
+namespace global_tests {
+    {
+        let x: NodeModule;
+        let y: NodeModule;
+        x.children.push(y);
+        x.parent = require.main;
+        require.main = y;
+    }
+}
+
 //////////////////////////////////////////////////////////
 /// Assert Tests : https://nodejs.org/api/assert.html ///
 //////////////////////////////////////////////////////////
@@ -922,6 +935,10 @@ namespace process_tests {
         var _p: NodeJS.Process = process;
         _p = p;
     }
+    {
+        var module: NodeModule;
+        module = process.mainModule;
+    }
 }
 
 ///////////////////////////////////////////////////////////
diff --git a/node/node-4.d.ts b/node/node-4.d.ts
index feee10f12d..bd6196d17c 100644
--- a/node/node-4.d.ts
+++ b/node/node-4.d.ts
@@ -52,7 +52,7 @@ interface NodeRequire extends NodeRequireFunction {
     resolve(id:string): string;
     cache: any;
     extensions: any;
-    main: any;
+    main: NodeModule;
 }
 
 declare var require: NodeRequire;
@@ -63,8 +63,8 @@ interface NodeModule {
     id: string;
     filename: string;
     loaded: boolean;
-    parent: any;
-    children: any[];
+    parent: NodeModule;
+    children: NodeModule[];
 }
 
 declare var module: NodeModule;
@@ -339,6 +339,7 @@ declare namespace NodeJS {
         title: string;
         arch: string;
         platform: string;
+        mainModule?: NodeModule;
         memoryUsage(): MemoryUsage;
         nextTick(callback: Function): void;
         umask(mask?: number): number;
diff --git a/node/node-tests.ts b/node/node-tests.ts
index b98b23ad69..0025505e67 100644
--- a/node/node-tests.ts
+++ b/node/node-tests.ts
@@ -27,6 +27,19 @@ import * as repl from "repl";
 // Specifically test buffer module regression.
 import {Buffer as ImportedBuffer, SlowBuffer as ImportedSlowBuffer} from "buffer";
 
+//////////////////////////////////////////////////////////
+/// Global Tests : https://nodejs.org/api/global.html  ///
+//////////////////////////////////////////////////////////
+namespace global_tests {
+    {
+        let x: NodeModule;
+        let y: NodeModule;
+        x.children.push(y);
+        x.parent = require.main;
+        require.main = y;
+    }
+}
+
 //////////////////////////////////////////////////////////
 /// Assert Tests : https://nodejs.org/api/assert.html ///
 //////////////////////////////////////////////////////////
@@ -1554,6 +1567,10 @@ namespace process_tests {
     {
         assert(process.argv[0] === process.argv0);
     }
+    {
+        var module: NodeModule;
+        module = process.mainModule;
+    }
 }
 
 ///////////////////////////////////////////////////////////
diff --git a/node/node.d.ts b/node/node.d.ts
index fe56ba851a..61132b9232 100644
--- a/node/node.d.ts
+++ b/node/node.d.ts
@@ -52,7 +52,7 @@ interface NodeRequire extends NodeRequireFunction {
     resolve(id: string): string;
     cache: any;
     extensions: any;
-    main: any;
+    main: NodeModule;
 }
 
 declare var require: NodeRequire;
@@ -63,8 +63,8 @@ interface NodeModule {
     id: string;
     filename: string;
     loaded: boolean;
-    parent: any;
-    children: any[];
+    parent: NodeModule;
+    children: NodeModule[];
 }
 
 declare var module: NodeModule;
@@ -372,6 +372,7 @@ declare namespace NodeJS {
         title: string;
         arch: string;
         platform: string;
+        mainModule?: NodeModule;
         memoryUsage(): MemoryUsage;
         nextTick(callback: Function, ...args: any[]): void;
         umask(mask?: number): number;