test: use arrow functions in async-hooks tests

Convert all anonymous callback functions in `test/async-hooks/*.js` to use arrow functions. `writing-tests.md` states to use arrow functions when appropriate. PR-URL: #30137 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]>

Author: GaryGSC

test/async-hooks/test-disable-in-init.js

@@ -7,7 +7,7 @@ const fs = require('fs');
 letnestedCall=false;
 
 async_hooks.createHook({
-init: common.mustCall(function(){
+init: common.mustCall(()=>{
 nestedHook.disable();
 if(!nestedCall){
 nestedCall=true;

test/async-hooks/test-graph.http.js

@@ -11,19 +11,19 @@ const http = require('http');
 consthooks=initHooks();
 hooks.enable();
 
-constserver=http.createServer(common.mustCall(function(req,res){
+constserver=http.createServer(common.mustCall((req,res)=>{
 res.end();
-this.close(common.mustCall());
+server.close(common.mustCall());
 }));
-server.listen(0,common.mustCall(function(){
+server.listen(0,common.mustCall(()=>{
 http.get({
 host: '::1',
 family: 6,
 port: server.address().port
 },common.mustCall());
 }));
 
-process.on('exit',function(){
+process.on('exit',()=>{
 hooks.disable();
 
 verifyGraph(

test/async-hooks/test-graph.pipeconnect.js

@@ -12,9 +12,9 @@ tmpdir.refresh();
 consthooks=initHooks();
 hooks.enable();
 
-net.createServer(function(c){
+constserver=net.createServer((c)=>{
 c.end();
-this.close();
+server.close();
 }).listen(common.PIPE,common.mustCall(onlisten));
 
 functiononlisten(){

test/async-hooks/test-nexttick-default-trigger.js

@@ -14,11 +14,11 @@ hooks.enable();
 
 constrootAsyncId=async_hooks.executionAsyncId();
 
-process.nextTick(common.mustCall(function(){
+process.nextTick(common.mustCall(()=>{
 assert.strictEqual(async_hooks.triggerAsyncId(),rootAsyncId);
 }));
 
-process.on('exit',function(){
+process.on('exit',()=>{
 hooks.sanityCheck();
 
 constas=hooks.activitiesOfTypes('TickObject');

test/async-hooks/test-pipeconnectwrap.js

@@ -17,9 +17,9 @@ let pipe1, pipe2;
 letpipeserver;
 letpipeconnect;
 
-net.createServer(common.mustCall(function(c){
+constserver=net.createServer(common.mustCall((c)=>{
 c.end();
-this.close();
+server.close();
 process.nextTick(maybeOnconnect.bind(null,'server'));
 })).listen(common.PIPE,common.mustCall(onlisten));
 

test/async-hooks/test-queue-microtask.js

@@ -11,11 +11,11 @@ hooks.enable();
 
 constrootAsyncId=async_hooks.executionAsyncId();
 
-queueMicrotask(common.mustCall(function(){
+queueMicrotask(common.mustCall(()=>{
 assert.strictEqual(async_hooks.triggerAsyncId(),rootAsyncId);
 }));
 
-process.on('exit',function(){
+process.on('exit',()=>{
 hooks.sanityCheck();
 
 constas=hooks.activitiesOfTypes('Microtask');