Fix benchmark

Fixed the `ee-newlistener` benchmark.

Author: VoltrexKeyva

benchmark/events/ee-newlistener.js

@@ -1,26 +1,35 @@
 'use strict';
 const common = require('../common.js');
-const EventEmitter = require('events').EventEmitter;
-const MathRandom = Math.random;
+const { EventEmitter } = require('events');
 
-const bench = common.createBenchmark(main, { n: [1e6] });
+const bench = common.createBenchmark(main, {
+  newListener: [0, 1],
+  removeListener: [0, 1],
+  n: [1e6]
+});
 
-function main({ n }) {
+function main({ newListener, removeListener, n }) {
   const ee = new EventEmitter();
   const listeners = [];
 
-  for (let i = 0; i < 10; i += 1) {
-    const listener = () => {};
-    if ((MathRandom() + .5) >= 1) listener.listener = () => {};
-    listeners.push(listener);
-  }
+  for (let k = 0; k < 10; k += 1)
+    listeners.push(() => {});
+
+  if (newListener === 1)
+    ee.on('newListener', (event, listener) => {});
 
-  ee.on('newListener', () => {});
+  if (removeListener === 1)
+    ee.on('removeListener', (event, listener) => {});
 
   bench.start();
   for (let i = 0; i < n; i += 1) {
-    for (let k = 0; k < listeners.length; k += 1)
-      ee.emit('newListener', listeners[k].listener ?? listeners[k]);
+    const dummy = (i % 2 === 0) ? 'dummy0' : 'dummy1';
+    for (let k = listeners.length; --k >= 0; /* empty */) {
+      ee.on(dummy, listeners[k]);
+    }
+    for (let k = listeners.length; --k >= 0; /* empty */) {
+      ee.removeListener(dummy, listeners[k]);
+    }
   }
   bench.end(n);
 }