console: don't attach unnecessary error handlers

A noop error handler is attached to the console's stream on
write. The handler is then immediately removed after the write.
This commit skips adding the error handler if one already
exists.

PR-URL: #27691
Fixes: #27687
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: cjihrig

lib/internal/console/constructor.js

@@ -231,7 +231,8 @@ Console.prototype[kWriteToConsole] = function(streamSymbol, string) {
   // handle both situations.
   try {
     // Add and later remove a noop error handler to catch synchronous errors.
-    stream.once('error', noop);
+    if (stream.listenerCount('error') === 0)
+      stream.once('error', noop);
 
     stream.write(string, errorHandler);
   } catch (e) {

test/parallel/test-worker-console-listeners.js

@@ -0,0 +1,16 @@
+'use strict';
+const common = require('../common');
+const { Worker, isMainThread } = require('worker_threads');
+const EventEmitter = require('events');
+
+if (isMainThread) {
+  process.on('warning', common.mustNotCall('unexpected warning'));
+
+  for (let i = 0; i < EventEmitter.defaultMaxListeners; ++i) {
+    const worker = new Worker(__filename);
+
+    worker.on('exit', common.mustCall(() => {
+      console.log('a'); // This console.log() is part of the test.
+    }));
+  }
+}