diff --git a/node/node-tests.ts b/node/node-tests.ts
index 0cc0b5de6c..64f7a5bb29 100644
--- a/node/node-tests.ts
+++ b/node/node-tests.ts
@@ -15,6 +15,7 @@ import * as querystring from "querystring";
 import * as path from "path";
 import * as readline from "readline";
 import * as childProcess from "child_process";
+import * as cluster from "cluster";
 import * as os from "os";
 import * as vm from "vm";
 // Specifically test buffer module regression.
@@ -643,6 +644,18 @@ namespace readline_tests {
 childProcess.exec("echo test");
 childProcess.spawnSync("echo test");
 
+//////////////////////////////////////////////////////////////////////
+/// cluster tests: https://nodejs.org/api/cluster.html ///
+//////////////////////////////////////////////////////////////////////
+
+cluster.fork();
+Object.keys(cluster.workers).forEach(key => {
+    const worker = cluster.workers[key];
+    if (worker.isDead()) {
+        console.log('worker %d is dead', worker.process.pid);
+    }
+});
+
 ////////////////////////////////////////////////////
 /// os tests : https://nodejs.org/api/os.html
 ////////////////////////////////////////////////////
diff --git a/node/node.d.ts b/node/node.d.ts
index 1b2da31c94..6f115759ff 100644
--- a/node/node.d.ts
+++ b/node/node.d.ts
@@ -679,6 +679,8 @@ declare module "cluster" {
         kill(signal?: string): void;
         destroy(signal?: string): void;
         disconnect(): void;
+        isConnected(): boolean;
+        isDead(): boolean;
     }
 
     export var settings: ClusterSettings;
@@ -688,7 +690,9 @@ declare module "cluster" {
     export function fork(env?: any): Worker;
     export function disconnect(callback?: Function): void;
     export var worker: Worker;
-    export var workers: Worker[];
+    export var workers: {
+        [index: string]: Worker
+    };
 
     // Event emitter
     export function addListener(event: string, listener: Function): void;