src: create per isolate proxy env template

PR-URL: #48655
Backport-PR-URL: #51239
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

src/env.cc

@@ -504,6 +504,7 @@ void IsolateData::CreateProperties() {
   binding::CreateInternalBindingTemplates(this);
 
   contextify::ContextifyContext::InitializeGlobalTemplates(this);
+  CreateEnvProxyTemplate(this);
 }
 
 constexpr uint16_t kDefaultCppGCEmebdderID = 0x90de;

src/node_env_var.cc

@@ -456,7 +456,8 @@ static void EnvDefiner(Local<Name> property,
   }
 }
 
-void CreateEnvProxyTemplate(Isolate* isolate, IsolateData* isolate_data) {
+void CreateEnvProxyTemplate(IsolateData* isolate_data) {
+  Isolate* isolate = isolate_data->isolate();
   HandleScope scope(isolate);
   if (!isolate_data->env_proxy_template().IsEmpty()) return;
   Local<FunctionTemplate> env_proxy_ctor_template =

src/node_process.h

@@ -15,7 +15,7 @@ class MemoryTracker;
 class ExternalReferenceRegistry;
 class Realm;
 
-void CreateEnvProxyTemplate(v8::Isolate* isolate, IsolateData* isolate_data);
+void CreateEnvProxyTemplate(IsolateData* isolate_data);
 
 // Most of the time, it's best to use `console.error` to write
 // to the process.stderr stream.  However, in some cases, such as

src/node_realm.cc

@@ -344,10 +344,11 @@ MaybeLocal<Value> PrincipalRealm::BootstrapRealm() {
     return MaybeLocal<Value>();
   }
 
+  // Setup process.env proxy.
   Local<String> env_string = FIXED_ONE_BYTE_STRING(isolate_, "env");
   Local<Object> env_proxy;
-  CreateEnvProxyTemplate(isolate_, env_->isolate_data());
-  if (!env_->env_proxy_template()->NewInstance(context()).ToLocal(&env_proxy) ||
+  if (!isolate_data()->env_proxy_template()->NewInstance(context()).ToLocal(
+          &env_proxy) ||
       process_object()->Set(context(), env_string, env_proxy).IsNothing()) {
     return MaybeLocal<Value>();
   }