From 9677a132323b3f30b92d454cf25d2cf6d09e7664 Mon Sep 17 00:00:00 2001
From: Niall Molloy <niall.molloy@engineering.digital.dwp.gov.uk>
Date: Thu, 2 May 2024 17:59:31 +0100
Subject: [PATCH] perf: avoid spread in makeRequest()

---
 lib/web/fetch/request.js | 79 ++++++++++++++++++++--------------------
 1 file changed, 39 insertions(+), 40 deletions(-)

diff --git a/lib/web/fetch/request.js b/lib/web/fetch/request.js
index 08eca21bc53..c6d42fd36d6 100644
--- a/lib/web/fetch/request.js
+++ b/lib/web/fetch/request.js
@@ -819,51 +819,50 @@ class Request {
 
 mixinBody(Request)
 
+// https://fetch.spec.whatwg.org/#requests
 function makeRequest (init) {
-  // https://fetch.spec.whatwg.org/#requests
-  const request = {
-    method: 'GET',
-    localURLsOnly: false,
-    unsafeRequest: false,
-    body: null,
-    client: null,
-    reservedClient: null,
-    replacesClientId: '',
-    window: 'client',
-    keepalive: false,
-    serviceWorkers: 'all',
-    initiator: '',
-    destination: '',
-    priority: null,
-    origin: 'client',
-    policyContainer: 'client',
-    referrer: 'client',
-    referrerPolicy: '',
-    mode: 'no-cors',
-    useCORSPreflightFlag: false,
-    credentials: 'same-origin',
-    useCredentials: false,
-    cache: 'default',
-    redirect: 'follow',
-    integrity: '',
-    cryptoGraphicsNonceMetadata: '',
-    parserMetadata: '',
-    reloadNavigation: false,
-    historyNavigation: false,
-    userActivation: false,
-    taintedOrigin: false,
-    redirectCount: 0,
-    responseTainting: 'basic',
-    preventNoCacheCacheControlHeaderModification: false,
-    done: false,
-    timingAllowFailed: false,
-    ...init,
+  return {
+    method: init.method ?? 'GET',
+    localURLsOnly: init.localURLsOnly ?? false,
+    unsafeRequest: init.unsafeRequest ?? false,
+    body: init.body ?? null,
+    client: init.client ?? null,
+    reservedClient: init.reservedClient ?? null,
+    replacesClientId: init.replacesClientId ?? '',
+    window: init.window ?? 'client',
+    keepalive: init.keepalive ?? false,
+    serviceWorkers: init.serviceWorkers ?? 'all',
+    initiator: init.initiator ?? '',
+    destination: init.destination ?? '',
+    priority: init.priority ?? null,
+    origin: init.origin ?? 'client',
+    policyContainer: init.policyContainer ?? 'client',
+    referrer: init.referrer ?? 'client',
+    referrerPolicy: init.referrerPolicy ?? '',
+    mode: init.mode ?? 'no-cors',
+    useCORSPreflightFlag: init.useCORSPreflightFlag ?? false,
+    credentials: init.credentials ?? 'same-origin',
+    useCredentials: init.useCredentials ?? false,
+    cache: init.cache ?? 'default',
+    redirect: init.redirect ?? 'follow',
+    integrity: init.integrity ?? '',
+    cryptoGraphicsNonceMetadata: init.cryptoGraphicsNonceMetadata ?? '',
+    parserMetadata: init.parserMetadata ?? '',
+    reloadNavigation: init.reloadNavigation ?? false,
+    historyNavigation: init.historyNavigation ?? false,
+    userActivation: init.userActivation ?? false,
+    taintedOrigin: init.taintedOrigin ?? false,
+    redirectCount: init.redirectCount ?? 0,
+    responseTainting: init.responseTainting ?? 'basic',
+    preventNoCacheCacheControlHeaderModification: init.preventNoCacheCacheControlHeaderModification ?? false,
+    done: init.done ?? false,
+    timingAllowFailed: init.timingAllowFailed ?? false,
+    urlList: init.urlList,
+    url: init.urlList[0],
     headersList: init.headersList
       ? new HeadersList(init.headersList)
       : new HeadersList()
   }
-  request.url = request.urlList[0]
-  return request
 }
 
 // https://fetch.spec.whatwg.org/#concept-request-clone