diff --git a/dom/base/StructuredCloneHolder.cpp b/dom/base/StructuredCloneHolder.cpp
index 9f697fc2878e..0fbf5975399c 100644
--- a/dom/base/StructuredCloneHolder.cpp
+++ b/dom/base/StructuredCloneHolder.cpp
@@ -378,7 +378,7 @@ StructuredCloneHolder::ReadFullySerializableObjects(JSContext* aCx,
   }
 
   if (aTag == SCTAG_DOM_WEBCRYPTO_KEY || aTag == SCTAG_DOM_URLSEARCHPARAMS) {
-    nsIGlobalObject *global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
+    nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
     if (!global) {
       return nullptr;
     }
@@ -436,7 +436,7 @@ StructuredCloneHolder::ReadFullySerializableObjects(JSContext* aCx,
       return nullptr;
     }
 
-    nsIGlobalObject *global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
+    nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
     if (!global) {
       return nullptr;
     }
diff --git a/dom/indexedDB/IDBObjectStore.cpp b/dom/indexedDB/IDBObjectStore.cpp
index 0f1fa8a03242..6c5caba66374 100644
--- a/dom/indexedDB/IDBObjectStore.cpp
+++ b/dom/indexedDB/IDBObjectStore.cpp
@@ -952,7 +952,7 @@ public:
       if (aDatabase && aDatabase->GetParentObject()) {
         parent = aDatabase->GetParentObject();
       } else {
-        parent = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
+        parent = xpc::CurrentNativeGlobal(aCx);
       }
     } else {
       WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
diff --git a/dom/ipc/StructuredCloneData.cpp b/dom/ipc/StructuredCloneData.cpp
index e17637003287..1b9f10585768 100644
--- a/dom/ipc/StructuredCloneData.cpp
+++ b/dom/ipc/StructuredCloneData.cpp
@@ -101,7 +101,7 @@ StructuredCloneData::Read(JSContext* aCx,
 {
   MOZ_ASSERT(mInitialized);
 
-  nsIGlobalObject *global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
+  nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
   MOZ_ASSERT(global);
 
   ReadFromBuffer(global, aCx, Data(), aValue, aRv);
diff --git a/dom/script/ScriptSettings.cpp b/dom/script/ScriptSettings.cpp
index 293e49f3d7c4..40c59e7234a4 100644
--- a/dom/script/ScriptSettings.cpp
+++ b/dom/script/ScriptSettings.cpp
@@ -693,8 +693,7 @@ AutoEntryScript::DocshellEntryMonitor::Entry(JSContext* aCx, JSFunction* aFuncti
     rootedScript = aScript;
   }
 
-  nsCOMPtr<nsPIDOMWindowInner> window =
-    do_QueryInterface(xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx)));
+  nsCOMPtr<nsPIDOMWindowInner> window = xpc::CurrentWindowOrNull(aCx);
   if (!window || !window->GetDocShell() ||
       !window->GetDocShell()->GetRecordProfileTimelineMarkers()) {
     return;
@@ -738,8 +737,7 @@ AutoEntryScript::DocshellEntryMonitor::Entry(JSContext* aCx, JSFunction* aFuncti
 void
 AutoEntryScript::DocshellEntryMonitor::Exit(JSContext* aCx)
 {
-  nsCOMPtr<nsPIDOMWindowInner> window =
-    do_QueryInterface(xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx)));
+  nsCOMPtr<nsPIDOMWindowInner> window = xpc::CurrentWindowOrNull(aCx);
   // Not really worth checking GetRecordProfileTimelineMarkers here.
   if (window && window->GetDocShell()) {
     nsCOMPtr<nsIDocShell> docShellForJSRunToCompletion = window->GetDocShell();
diff --git a/dom/webauthn/PublicKeyCredential.cpp b/dom/webauthn/PublicKeyCredential.cpp
index db3c88ed34e9..79bf234b65b0 100644
--- a/dom/webauthn/PublicKeyCredential.cpp
+++ b/dom/webauthn/PublicKeyCredential.cpp
@@ -86,8 +86,7 @@ PublicKeyCredential::SetResponse(RefPtr<AuthenticatorResponse> aResponse)
 /* static */ already_AddRefed<Promise>
 PublicKeyCredential::IsUserVerifyingPlatformAuthenticatorAvailable(GlobalObject& aGlobal)
 {
-  nsIGlobalObject* globalObject =
-    xpc::NativeGlobal(JS::CurrentGlobalOrNull(aGlobal.Context()));
+  nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aGlobal.Context());
   if (NS_WARN_IF(!globalObject)) {
     return nullptr;
   }
diff --git a/gfx/src/nsThebesFontEnumerator.cpp b/gfx/src/nsThebesFontEnumerator.cpp
index b7e21d07af15..c69b14c9a04c 100644
--- a/gfx/src/nsThebesFontEnumerator.cpp
+++ b/gfx/src/nsThebesFontEnumerator.cpp
@@ -179,8 +179,7 @@ nsThebesFontEnumerator::EnumerateFontsAsync(const char* aLangGroup,
 {
     MOZ_ASSERT(NS_IsMainThread());
 
-    nsCOMPtr<nsIGlobalObject> global =
-        xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
+    nsCOMPtr<nsIGlobalObject> global = xpc::CurrentNativeGlobal(aCx);
     NS_ENSURE_TRUE(global, NS_ERROR_UNEXPECTED);
 
     ErrorResult errv;
diff --git a/js/xpconnect/src/ExportHelpers.cpp b/js/xpconnect/src/ExportHelpers.cpp
index ee724778b278..ac6ac152f470 100644
--- a/js/xpconnect/src/ExportHelpers.cpp
+++ b/js/xpconnect/src/ExportHelpers.cpp
@@ -119,7 +119,7 @@ public:
                 return nullptr;
             }
 
-            nsIGlobalObject* global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
+            nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
             MOZ_ASSERT(global);
 
             // RefPtr<File> needs to go out of scope before toObjectOrNull() is called because
diff --git a/js/xpconnect/src/XPCConvert.cpp b/js/xpconnect/src/XPCConvert.cpp
index 3d5281ba835d..ca2a9b9aea28 100644
--- a/js/xpconnect/src/XPCConvert.cpp
+++ b/js/xpconnect/src/XPCConvert.cpp
@@ -813,7 +813,7 @@ XPCConvert::JSData2Native(void* d, HandleValue s,
 
     case nsXPTType::T_PROMISE:
     {
-        nsIGlobalObject* glob = NativeGlobal(CurrentGlobalOrNull(cx));
+        nsIGlobalObject* glob = CurrentNativeGlobal(cx);
         if (!glob) {
             if (pErr) {
                 *pErr = NS_ERROR_UNEXPECTED;
diff --git a/js/xpconnect/src/xpcpublic.h b/js/xpconnect/src/xpcpublic.h
index 616466f30210..56992cbd3cad 100644
--- a/js/xpconnect/src/xpcpublic.h
+++ b/js/xpconnect/src/xpcpublic.h
@@ -504,6 +504,13 @@ CompilationScope();
 nsIGlobalObject*
 NativeGlobal(JSObject* aObj);
 
+/**
+ * Returns the nsIGlobalObject corresponding to |cx|'s JS global. Must not be
+ * called when |cx| is not in a Realm.
+ */
+nsIGlobalObject*
+CurrentNativeGlobal(JSContext* cx);
+
 /**
  * If |aObj| is a window, returns the associated nsGlobalWindow.
  * Otherwise, returns null.
@@ -519,7 +526,7 @@ nsGlobalWindowInner*
 WindowGlobalOrNull(JSObject* aObj);
 
 /**
- * If |cx| is in a compartment whose global is a window, returns the associated
+ * If |cx| is in a realm whose global is a window, returns the associated
  * nsGlobalWindow. Otherwise, returns null.
  */
 nsGlobalWindowInner*
diff --git a/js/xpconnect/wrappers/WrapperFactory.cpp b/js/xpconnect/wrappers/WrapperFactory.cpp
index 074b90b70435..28fe883629b4 100644
--- a/js/xpconnect/wrappers/WrapperFactory.cpp
+++ b/js/xpconnect/wrappers/WrapperFactory.cpp
@@ -701,4 +701,10 @@ NativeGlobal(JSObject* obj)
     return global;
 }
 
+nsIGlobalObject*
+CurrentNativeGlobal(JSContext* cx)
+{
+    return xpc::NativeGlobal(JS::CurrentGlobalOrNull(cx));
+}
+
 } // namespace xpc
diff --git a/layout/base/nsStyleSheetService.cpp b/layout/base/nsStyleSheetService.cpp
index 0e379477584a..1c7f21638448 100644
--- a/layout/base/nsStyleSheetService.cpp
+++ b/layout/base/nsStyleSheetService.cpp
@@ -310,8 +310,7 @@ nsStyleSheetService::PreloadSheetAsync(nsIURI* aSheetURI, uint32_t aSheetType,
   nsresult rv = GetParsingMode(aSheetType, &parsingMode);
   NS_ENSURE_SUCCESS(rv, rv);
 
-  nsCOMPtr<nsIGlobalObject> global =
-    xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
+  nsCOMPtr<nsIGlobalObject> global = xpc::CurrentNativeGlobal(aCx);
   NS_ENSURE_TRUE(global, NS_ERROR_UNEXPECTED);
 
   ErrorResult errv;
diff --git a/security/manager/ssl/SecretDecoderRing.cpp b/security/manager/ssl/SecretDecoderRing.cpp
index e7d505ff803f..70122388373f 100644
--- a/security/manager/ssl/SecretDecoderRing.cpp
+++ b/security/manager/ssl/SecretDecoderRing.cpp
@@ -152,9 +152,7 @@ SecretDecoderRing::AsyncEncryptStrings(uint32_t plaintextsCount,
   NS_ENSURE_ARG_POINTER(plaintexts);
   NS_ENSURE_ARG_POINTER(aCx);
 
-  nsIGlobalObject* globalObject =
-    xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
-
+  nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
   if (NS_WARN_IF(!globalObject)) {
     return NS_ERROR_UNEXPECTED;
   }
diff --git a/toolkit/components/telemetry/Telemetry.cpp b/toolkit/components/telemetry/Telemetry.cpp
index ef83bb7e4ee7..e6c56e3d2e32 100644
--- a/toolkit/components/telemetry/Telemetry.cpp
+++ b/toolkit/components/telemetry/Telemetry.cpp
@@ -848,7 +848,7 @@ NS_IMETHODIMP
 TelemetryImpl::GetLoadedModules(JSContext *cx, Promise** aPromise)
 {
 #if defined(MOZ_GECKO_PROFILER)
-  nsIGlobalObject* global = xpc::NativeGlobal(JS::CurrentGlobalOrNull(cx));
+  nsIGlobalObject* global = xpc::CurrentNativeGlobal(cx);
   if (NS_WARN_IF(!global)) {
     return NS_ERROR_FAILURE;
   }
diff --git a/tools/profiler/gecko/nsProfiler.cpp b/tools/profiler/gecko/nsProfiler.cpp
index 85eafd7bd568..7499f16a1c74 100644
--- a/tools/profiler/gecko/nsProfiler.cpp
+++ b/tools/profiler/gecko/nsProfiler.cpp
@@ -234,9 +234,7 @@ nsProfiler::GetProfileDataAsync(double aSinceTime, JSContext* aCx,
     return NS_ERROR_FAILURE;
   }
 
-  nsIGlobalObject* globalObject =
-    xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
-
+  nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
   if (NS_WARN_IF(!globalObject)) {
     return NS_ERROR_FAILURE;
   }
@@ -302,9 +300,7 @@ nsProfiler::GetProfileDataAsArrayBuffer(double aSinceTime, JSContext* aCx,
     return NS_ERROR_FAILURE;
   }
 
-  nsIGlobalObject* globalObject =
-    xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
-
+  nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
   if (NS_WARN_IF(!globalObject)) {
     return NS_ERROR_FAILURE;
   }
@@ -359,9 +355,7 @@ nsProfiler::DumpProfileToFileAsync(const nsACString& aFilename,
     return NS_ERROR_FAILURE;
   }
 
-  nsIGlobalObject* globalObject =
-    xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
-
+  nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
   if (NS_WARN_IF(!globalObject)) {
     return NS_ERROR_FAILURE;
   }
@@ -673,4 +667,4 @@ nsProfiler::ClearExpiredExitProfiles()
   mExitProfiles.RemoveElementsBy([bufferRangeStart](ExitProfile& aExitProfile){
     return aExitProfile.mBufferPositionAtGatherTime < bufferRangeStart;
   });
-}
\ No newline at end of file
+}