test: replace anonymous closure functions with arrow function

PR-URL: #24420
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: Abhishek Dixit

test/parallel/test-tls-ticket-cluster.js

@@ -44,7 +44,7 @@ if (cluster.isMaster) {
 constc=tls.connect(workerPort,{
 session: lastSession,
 rejectUnauthorized: false
-},function(){
+},()=>{
 lastSession=c.getSession();
 c.end();
 
@@ -60,7 +60,7 @@ if (cluster.isMaster) {
 
 functionfork(){
 constworker=cluster.fork();
-worker.on('message',function({ msg, port }){
+worker.on('message',({ msg, port })=>{
 console.error('[master] got %j',msg);
 if(msg==='reused'){
 ++reusedCount;
@@ -71,15 +71,15 @@ if (cluster.isMaster) {
 }
 });
 
-worker.on('exit',function(){
+worker.on('exit',()=>{
 console.error('[master] worker died');
 });
 }
 for(leti=0;i<workerCount;i++){
 fork();
 }
 
-process.on('exit',function(){
+process.on('exit',()=>{
 assert.strictEqual(reqCount,expectedReqCount);
 assert.strictEqual(reusedCount+1,reqCount);
 });
@@ -91,7 +91,7 @@ const cert = fixtures.readSync('agent.crt');
 
 constoptions={ key, cert };
 
-constserver=tls.createServer(options,function(c){
+constserver=tls.createServer(options,(c)=>{
 if(c.isSessionReused()){
 process.send({msg: 'reused'});
 }else{
@@ -100,7 +100,7 @@ const server = tls.createServer(options, function(c) {
 c.end();
 });
 
-server.listen(0,function(){
+server.listen(0,()=>{
 const{ port }=server.address();
 process.send({
 msg: 'listening',
@@ -111,14 +111,14 @@ server.listen(0, function() {
 process.on('message',functionlistener(msg){
 console.error('[worker] got %j',msg);
 if(msg==='die'){
-server.close(function(){
+server.close(()=>{
 console.error('[worker] server close');
 
 process.exit();
 });
 }
 });
 
-process.on('exit',function(){
+process.on('exit',()=>{
 console.error('[worker] exit');
 });