initialize console in defaultMaxListeners setter

Author: Dave

lib/events.js

@@ -19,7 +19,20 @@ EventEmitter.prototype._maxListeners = undefined;
 
 // By default EventEmitters will print a warning if more than 10 listeners are
 // added to it. This is a useful default which helps finding memory leaks.
-EventEmitter.defaultMaxListeners = 10;
+var defaultMaxListeners = 10;
+
+Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
+  enumerable: true,
+  get: function() {
+    return defaultMaxListeners;
+  },
+  set: function(arg) {
+    // force global console to be compiled.
+    // see https://github.com/nodejs/node/issues/4467
+    console;
+    defaultMaxListeners = arg;
+  }
+});
 
 EventEmitter.init = function() {
   this.domain = null;
@@ -240,8 +253,7 @@ EventEmitter.prototype.addListener = function addListener(type, listener) {
                            'leak detected. %d %s listeners added. ' +
                            'Use emitter.setMaxListeners() to increase limit.',
                            existing.length, type);
-        if (console.trace)
-          console.trace();
+        console.trace();
       }
     }
   }

lib/internal/util.js

@@ -25,8 +25,7 @@ exports.error = function(msg) {
     args[0] = fmt;
     for (let i = 1; i < arguments.length; ++i)
       args[i] = arguments[i];
-    if (console.error)
-      console.error.apply(console, args);
+    console.error.apply(console, args);
   } else {
     console.error(fmt);
   }