Merge pull request #10470 from NoHomey/patch-7

Improvement to node type definition

node/node.d.ts

@@ -324,6 +324,7 @@ declare namespace NodeJS {
         cwd(): string;
         env: any;
         exit(code?: number): void;
+        exitCode: number;
         getgid(): number;
         setgid(id: number): void;
         setgid(id: string): void;