fix: extract noop everywhere (#3559)

Author: Uzlopak

lib/dispatcher/client.js

@@ -60,6 +60,8 @@ const connectH2 = require('./client-h2.js')
 
 const kClosedResolve = Symbol('kClosedResolve')
 
+const noop = () => {}
+
 function getPipelining (client) {
   return client[kPipelining] ?? client[kHTTPContext]?.defaultPipelining ?? 1
 }
@@ -418,7 +420,7 @@ async function connect (client) {
     })
 
     if (client.destroyed) {
-      util.destroy(socket.on('error', () => {}), new ClientDestroyedError())
+      util.destroy(socket.on('error', noop), new ClientDestroyedError())
       return
     }
 
@@ -429,7 +431,7 @@ async function connect (client) {
         ? await connectH2(client, socket)
         : await connectH1(client, socket)
     } catch (err) {
-      socket.destroy().on('error', () => {})
+      socket.destroy().on('error', noop)
       throw err
     }
 

lib/dispatcher/proxy-agent.js

@@ -23,6 +23,8 @@ function defaultFactory (origin, opts) {
   return new Pool(origin, opts)
 }
 
+const noop = () => {}
+
 class ProxyAgent extends DispatcherBase {
   constructor (opts) {
     if (!opts || (typeof opts === 'object' && !(opts instanceof URL) && !opts.uri)) {
@@ -78,7 +80,7 @@ class ProxyAgent extends DispatcherBase {
             servername: this[kProxyTls]?.servername || proxyHostname
           })
           if (statusCode !== 200) {
-            socket.on('error', () => {}).destroy()
+            socket.on('error', noop).destroy()
             callback(new RequestAbortedError(`Proxy response (${statusCode}) !== 200 when HTTP Tunneling`))
           }
           if (opts.protocol !== 'https:') {

lib/web/fetch/index.js

@@ -65,6 +65,8 @@ const { webidl } = require('./webidl')
 const { STATUS_CODES } = require('node:http')
 const GET_OR_HEAD = ['GET', 'HEAD']
 
+const noop = () => {}
+
 const defaultUserAgent = typeof __UNDICI_IS_NODE__ !== 'undefined' || typeof esbuildDetection !== 'undefined'
   ? 'node'
   : 'undici'
@@ -2164,8 +2166,8 @@ async function httpNetworkFetch (
             statusText,
             headersList,
             body: decoders.length
-              ? pipeline(this.body, ...decoders, () => { })
-              : this.body.on('error', () => { })
+              ? pipeline(this.body, ...decoders, noop)
+              : this.body.on('error', noop)
           })
 
           return true