cluster: deprecate worker.suicide

Deprecate worker.suicide in favor of worker.exitedAfterDisconnect.

PR-URL: #3747
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>

lib/cluster.js

@@ -6,6 +6,7 @@ const dgram = require('dgram');
 const fork = require('child_process').fork;
 const net = require('net');
 const util = require('util');
+const internalUtil = require('internal/util');
 const SCHED_NONE = 1;
 const SCHED_RR = 2;
 
@@ -30,14 +31,14 @@ function Worker(options) {
   this.exitedAfterDisconnect = undefined;
 
   Object.defineProperty(this, 'suicide', {
-    get: function() {
-      // TODO: Print deprecation message.
+    get: internalUtil.deprecate(() => {
       return this.exitedAfterDisconnect;
-    },
-    set: function(val) {
-      // TODO: Print deprecation message.
+    }, 'worker.suicide is deprecated. ' +
+       'Please use worker.exitedAfterDisconnect.'),
+    set: internalUtil.deprecate((val) => {
       this.exitedAfterDisconnect = val;
-    },
+    }, 'worker.suicide is deprecated. ' +
+       'Please use worker.exitedAfterDisconnect.'),
     enumerable: true
   });