refactor: move createDeferredPromise to util

Author: ronag

lib/fetch/index.js

@@ -29,7 +29,8 @@ const {
   corsCheck,
   crossOriginResourcePolicyCheck,
   determineRequestsReferrer,
-  coarsenedSharedCurrentTime
+  coarsenedSharedCurrentTime,
+  createDeferredPromise
 } = require('./util')
 const { kState, kHeaders, kGuard, kRealm } = require('./symbols')
 const { AbortError } = require('../core/errors')
@@ -1812,15 +1813,4 @@ function httpNetworkFetch (
   })
 }
 
-function createDeferredPromise () {
-  let res
-  let rej
-  const promise = new Promise((resolve, reject) => {
-    res = resolve
-    rej = reject
-  })
-
-  return { promise, resolve: res, reject: rej }
-}
-
 module.exports = fetch

lib/fetch/util.js

@@ -297,6 +297,17 @@ function tryUpgradeRequestToAPotentiallyTrustworthyURL (request) {
   // TODO
 }
 
+function createDeferredPromise () {
+  let res
+  let rej
+  const promise = new Promise((resolve, reject) => {
+    res = resolve
+    rej = reject
+  })
+
+  return { promise, resolve: res, reject: rej }
+}
+
 class ServiceWorkerGlobalScope {} // dummy
 class Window {} // dummy
 class EnvironmentSettingsObject {} // dummy
@@ -305,6 +316,7 @@ module.exports = {
   ServiceWorkerGlobalScope,
   Window,
   EnvironmentSettingsObject,
+  createDeferredPromise,
   ReadableStreamFrom,
   toUSVString,
   tryUpgradeRequestToAPotentiallyTrustworthyURL,