test: use ES6 classes instead of util.inherits

PR-URL: https://github.com/nodejs/node/pull/16938
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/test/parallel/test-event-emitter-listeners.js b/test/parallel/test-event-emitter-listeners.js
index 9fe4626cd8..0736e3103e 100644
--- a/test/parallel/test-event-emitter-listeners.js
+++ b/test/parallel/test-event-emitter-listeners.js
@@ -24,12 +24,9 @@
 require('../common');
 const assert = require('assert');
 const events = require('events');
-const util = require('util');
 
 function listener() {}
 function listener2() {}
-class TestStream { constructor() { } }
-util.inherits(TestStream, events.EventEmitter);
 
 {
   const ee = new events.EventEmitter();
@@ -81,6 +78,7 @@ util.inherits(TestStream, events.EventEmitter);
 }
 
 {
+  class TestStream extends events.EventEmitter {}
   const s = new TestStream();
   assert.deepStrictEqual(s.listeners('foo'), []);
 }