diff --git a/src/README.md b/src/README.md
index 8162deecb3cc83..314cd343418cbf 100644
--- a/src/README.md
+++ b/src/README.md
@@ -390,32 +390,33 @@ void Initialize(Local<Object> target,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
 
-  env->SetMethod(target, "getaddrinfo", GetAddrInfo);
-  env->SetMethod(target, "getnameinfo", GetNameInfo);
+  SetMethod(context, target, "getaddrinfo", GetAddrInfo);
+  SetMethod(context, target, "getnameinfo", GetNameInfo);
 
   // 'SetMethodNoSideEffect' means that debuggers can safely execute this
   // function for e.g. previews.
-  env->SetMethodNoSideEffect(target, "canonicalizeIP", CanonicalizeIP);
+  SetMethodNoSideEffect(context, target, "canonicalizeIP", CanonicalizeIP);
 
   // ... more code ...
 
+  Isolate* isolate = env->isolate();
   // Building the `ChannelWrap` class for JS:
   Local<FunctionTemplate> channel_wrap =
-      env->NewFunctionTemplate(ChannelWrap::New);
+      NewFunctionTemplate(isolate, ChannelWrap::New);
   // Allow for 1 internal field, see `BaseObject` for details on this:
   channel_wrap->InstanceTemplate()->SetInternalFieldCount(1);
   channel_wrap->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
   // Set various methods on the class (i.e. on the prototype):
-  env->SetProtoMethod(channel_wrap, "queryAny", Query<QueryAnyWrap>);
-  env->SetProtoMethod(channel_wrap, "queryA", Query<QueryAWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryAny", Query<QueryAnyWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryA", Query<QueryAWrap>);
   // ...
-  env->SetProtoMethod(channel_wrap, "querySoa", Query<QuerySoaWrap>);
-  env->SetProtoMethod(channel_wrap, "getHostByAddr", Query<GetHostByAddrWrap>);
+  SetProtoMethod(isolate, channel_wrap, "querySoa", Query<QuerySoaWrap>);
+  SetProtoMethod(isolate, channel_wrap, "getHostByAddr", Query<GetHostByAddrWrap>);
 
-  env->SetProtoMethodNoSideEffect(channel_wrap, "getServers", GetServers);
+  SetProtoMethodNoSideEffect(isolate, channel_wrap, "getServers", GetServers);
 
-  env->SetConstructorFunction(target, "ChannelWrap", channel_wrap);
+  SetConstructorFunction(context, target, "ChannelWrap", channel_wrap);
 }
 
 // Run the `Initialize` function when loading this module through
diff --git a/src/async_wrap.cc b/src/async_wrap.cc
index ff7ff59092104a..d65e456930b080 100644
--- a/src/async_wrap.cc
+++ b/src/async_wrap.cc
@@ -340,12 +340,14 @@ void AsyncWrap::SetCallbackTrampoline(const FunctionCallbackInfo<Value>& args) {
 Local<FunctionTemplate> AsyncWrap::GetConstructorTemplate(Environment* env) {
   Local<FunctionTemplate> tmpl = env->async_wrap_ctor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = env->NewFunctionTemplate(nullptr);
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, nullptr);
     tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "AsyncWrap"));
     tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
-    env->SetProtoMethod(tmpl, "getAsyncId", AsyncWrap::GetAsyncId);
-    env->SetProtoMethod(tmpl, "asyncReset", AsyncWrap::AsyncReset);
-    env->SetProtoMethod(tmpl, "getProviderType", AsyncWrap::GetProviderType);
+    SetProtoMethod(isolate, tmpl, "getAsyncId", AsyncWrap::GetAsyncId);
+    SetProtoMethod(isolate, tmpl, "asyncReset", AsyncWrap::AsyncReset);
+    SetProtoMethod(
+        isolate, tmpl, "getProviderType", AsyncWrap::GetProviderType);
     env->set_async_wrap_ctor_template(tmpl);
   }
   return tmpl;
@@ -359,15 +361,15 @@ void AsyncWrap::Initialize(Local<Object> target,
   Isolate* isolate = env->isolate();
   HandleScope scope(isolate);
 
-  env->SetMethod(target, "setupHooks", SetupHooks);
-  env->SetMethod(target, "setCallbackTrampoline", SetCallbackTrampoline);
-  env->SetMethod(target, "pushAsyncContext", PushAsyncContext);
-  env->SetMethod(target, "popAsyncContext", PopAsyncContext);
-  env->SetMethod(target, "executionAsyncResource", ExecutionAsyncResource);
-  env->SetMethod(target, "clearAsyncIdStack", ClearAsyncIdStack);
-  env->SetMethod(target, "queueDestroyAsyncId", QueueDestroyAsyncId);
-  env->SetMethod(target, "setPromiseHooks", SetPromiseHooks);
-  env->SetMethod(target, "registerDestroyHook", RegisterDestroyHook);
+  SetMethod(context, target, "setupHooks", SetupHooks);
+  SetMethod(context, target, "setCallbackTrampoline", SetCallbackTrampoline);
+  SetMethod(context, target, "pushAsyncContext", PushAsyncContext);
+  SetMethod(context, target, "popAsyncContext", PopAsyncContext);
+  SetMethod(context, target, "executionAsyncResource", ExecutionAsyncResource);
+  SetMethod(context, target, "clearAsyncIdStack", ClearAsyncIdStack);
+  SetMethod(context, target, "queueDestroyAsyncId", QueueDestroyAsyncId);
+  SetMethod(context, target, "setPromiseHooks", SetPromiseHooks);
+  SetMethod(context, target, "registerDestroyHook", RegisterDestroyHook);
 
   PropertyAttribute ReadOnlyDontDelete =
       static_cast<PropertyAttribute>(ReadOnly | DontDelete);
diff --git a/src/cares_wrap.cc b/src/cares_wrap.cc
index a16a0dcbd1bcec..1757d56d09ab4d 100644
--- a/src/cares_wrap.cc
+++ b/src/cares_wrap.cc
@@ -1886,12 +1886,13 @@ void Initialize(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  env->SetMethod(target, "getaddrinfo", GetAddrInfo);
-  env->SetMethod(target, "getnameinfo", GetNameInfo);
-  env->SetMethodNoSideEffect(target, "canonicalizeIP", CanonicalizeIP);
+  SetMethod(context, target, "getaddrinfo", GetAddrInfo);
+  SetMethod(context, target, "getnameinfo", GetNameInfo);
+  SetMethodNoSideEffect(context, target, "canonicalizeIP", CanonicalizeIP);
 
-  env->SetMethod(target, "strerror", StrError);
+  SetMethod(context, target, "strerror", StrError);
 
   target->Set(env->context(), FIXED_ONE_BYTE_STRING(env->isolate(), "AF_INET"),
               Integer::New(env->isolate(), AF_INET)).Check();
@@ -1913,44 +1914,45 @@ void Initialize(Local<Object> target,
   Local<FunctionTemplate> aiw =
       BaseObject::MakeLazilyInitializedJSTemplate(env);
   aiw->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetConstructorFunction(target, "GetAddrInfoReqWrap", aiw);
+  SetConstructorFunction(context, target, "GetAddrInfoReqWrap", aiw);
 
   Local<FunctionTemplate> niw =
       BaseObject::MakeLazilyInitializedJSTemplate(env);
   niw->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetConstructorFunction(target, "GetNameInfoReqWrap", niw);
+  SetConstructorFunction(context, target, "GetNameInfoReqWrap", niw);
 
   Local<FunctionTemplate> qrw =
       BaseObject::MakeLazilyInitializedJSTemplate(env);
   qrw->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetConstructorFunction(target, "QueryReqWrap", qrw);
+  SetConstructorFunction(context, target, "QueryReqWrap", qrw);
 
   Local<FunctionTemplate> channel_wrap =
-      env->NewFunctionTemplate(ChannelWrap::New);
+      NewFunctionTemplate(isolate, ChannelWrap::New);
   channel_wrap->InstanceTemplate()->SetInternalFieldCount(
       ChannelWrap::kInternalFieldCount);
   channel_wrap->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(channel_wrap, "queryAny", Query<QueryAnyWrap>);
-  env->SetProtoMethod(channel_wrap, "queryA", Query<QueryAWrap>);
-  env->SetProtoMethod(channel_wrap, "queryAaaa", Query<QueryAaaaWrap>);
-  env->SetProtoMethod(channel_wrap, "queryCaa", Query<QueryCaaWrap>);
-  env->SetProtoMethod(channel_wrap, "queryCname", Query<QueryCnameWrap>);
-  env->SetProtoMethod(channel_wrap, "queryMx", Query<QueryMxWrap>);
-  env->SetProtoMethod(channel_wrap, "queryNs", Query<QueryNsWrap>);
-  env->SetProtoMethod(channel_wrap, "queryTxt", Query<QueryTxtWrap>);
-  env->SetProtoMethod(channel_wrap, "querySrv", Query<QuerySrvWrap>);
-  env->SetProtoMethod(channel_wrap, "queryPtr", Query<QueryPtrWrap>);
-  env->SetProtoMethod(channel_wrap, "queryNaptr", Query<QueryNaptrWrap>);
-  env->SetProtoMethod(channel_wrap, "querySoa", Query<QuerySoaWrap>);
-  env->SetProtoMethod(channel_wrap, "getHostByAddr", Query<GetHostByAddrWrap>);
-
-  env->SetProtoMethodNoSideEffect(channel_wrap, "getServers", GetServers);
-  env->SetProtoMethod(channel_wrap, "setServers", SetServers);
-  env->SetProtoMethod(channel_wrap, "setLocalAddress", SetLocalAddress);
-  env->SetProtoMethod(channel_wrap, "cancel", Cancel);
-
-  env->SetConstructorFunction(target, "ChannelWrap", channel_wrap);
+  SetProtoMethod(isolate, channel_wrap, "queryAny", Query<QueryAnyWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryA", Query<QueryAWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryAaaa", Query<QueryAaaaWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryCaa", Query<QueryCaaWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryCname", Query<QueryCnameWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryMx", Query<QueryMxWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryNs", Query<QueryNsWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryTxt", Query<QueryTxtWrap>);
+  SetProtoMethod(isolate, channel_wrap, "querySrv", Query<QuerySrvWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryPtr", Query<QueryPtrWrap>);
+  SetProtoMethod(isolate, channel_wrap, "queryNaptr", Query<QueryNaptrWrap>);
+  SetProtoMethod(isolate, channel_wrap, "querySoa", Query<QuerySoaWrap>);
+  SetProtoMethod(
+      isolate, channel_wrap, "getHostByAddr", Query<GetHostByAddrWrap>);
+
+  SetProtoMethodNoSideEffect(isolate, channel_wrap, "getServers", GetServers);
+  SetProtoMethod(isolate, channel_wrap, "setServers", SetServers);
+  SetProtoMethod(isolate, channel_wrap, "setLocalAddress", SetLocalAddress);
+  SetProtoMethod(isolate, channel_wrap, "cancel", Cancel);
+
+  SetConstructorFunction(context, target, "ChannelWrap", channel_wrap);
 }
 
 }  // namespace cares_wrap
diff --git a/src/crypto/crypto_cipher.cc b/src/crypto/crypto_cipher.cc
index 6c663a2b21d0a2..0ce2708d12ceb8 100644
--- a/src/crypto/crypto_cipher.cc
+++ b/src/crypto/crypto_cipher.cc
@@ -13,10 +13,12 @@ namespace node {
 using v8::Array;
 using v8::ArrayBuffer;
 using v8::BackingStore;
+using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::Uint32;
@@ -270,43 +272,54 @@ void CipherBase::MemoryInfo(MemoryTracker* tracker) const {
 }
 
 void CipherBase::Initialize(Environment* env, Local<Object> target) {
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  Local<Context> context = env->context();
+
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
 
   t->InstanceTemplate()->SetInternalFieldCount(
       CipherBase::kInternalFieldCount);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "init", Init);
-  env->SetProtoMethod(t, "initiv", InitIv);
-  env->SetProtoMethod(t, "update", Update);
-  env->SetProtoMethod(t, "final", Final);
-  env->SetProtoMethod(t, "setAutoPadding", SetAutoPadding);
-  env->SetProtoMethodNoSideEffect(t, "getAuthTag", GetAuthTag);
-  env->SetProtoMethod(t, "setAuthTag", SetAuthTag);
-  env->SetProtoMethod(t, "setAAD", SetAAD);
-  env->SetConstructorFunction(target, "CipherBase", t);
-
-  env->SetMethodNoSideEffect(target, "getSSLCiphers", GetSSLCiphers);
-  env->SetMethodNoSideEffect(target, "getCiphers", GetCiphers);
-
-  env->SetMethod(target, "publicEncrypt",
-                 PublicKeyCipher::Cipher<PublicKeyCipher::kPublic,
-                                         EVP_PKEY_encrypt_init,
-                                         EVP_PKEY_encrypt>);
-  env->SetMethod(target, "privateDecrypt",
-                 PublicKeyCipher::Cipher<PublicKeyCipher::kPrivate,
-                                         EVP_PKEY_decrypt_init,
-                                         EVP_PKEY_decrypt>);
-  env->SetMethod(target, "privateEncrypt",
-                 PublicKeyCipher::Cipher<PublicKeyCipher::kPrivate,
-                                         EVP_PKEY_sign_init,
-                                         EVP_PKEY_sign>);
-  env->SetMethod(target, "publicDecrypt",
-                 PublicKeyCipher::Cipher<PublicKeyCipher::kPublic,
-                                         EVP_PKEY_verify_recover_init,
-                                         EVP_PKEY_verify_recover>);
-
-  env->SetMethodNoSideEffect(target, "getCipherInfo", GetCipherInfo);
+  SetProtoMethod(isolate, t, "init", Init);
+  SetProtoMethod(isolate, t, "initiv", InitIv);
+  SetProtoMethod(isolate, t, "update", Update);
+  SetProtoMethod(isolate, t, "final", Final);
+  SetProtoMethod(isolate, t, "setAutoPadding", SetAutoPadding);
+  SetProtoMethodNoSideEffect(isolate, t, "getAuthTag", GetAuthTag);
+  SetProtoMethod(isolate, t, "setAuthTag", SetAuthTag);
+  SetProtoMethod(isolate, t, "setAAD", SetAAD);
+  SetConstructorFunction(context, target, "CipherBase", t);
+
+  SetMethodNoSideEffect(context, target, "getSSLCiphers", GetSSLCiphers);
+  SetMethodNoSideEffect(context, target, "getCiphers", GetCiphers);
+
+  SetMethod(context,
+            target,
+            "publicEncrypt",
+            PublicKeyCipher::Cipher<PublicKeyCipher::kPublic,
+                                    EVP_PKEY_encrypt_init,
+                                    EVP_PKEY_encrypt>);
+  SetMethod(context,
+            target,
+            "privateDecrypt",
+            PublicKeyCipher::Cipher<PublicKeyCipher::kPrivate,
+                                    EVP_PKEY_decrypt_init,
+                                    EVP_PKEY_decrypt>);
+  SetMethod(context,
+            target,
+            "privateEncrypt",
+            PublicKeyCipher::Cipher<PublicKeyCipher::kPrivate,
+                                    EVP_PKEY_sign_init,
+                                    EVP_PKEY_sign>);
+  SetMethod(context,
+            target,
+            "publicDecrypt",
+            PublicKeyCipher::Cipher<PublicKeyCipher::kPublic,
+                                    EVP_PKEY_verify_recover_init,
+                                    EVP_PKEY_verify_recover>);
+
+  SetMethodNoSideEffect(context, target, "getCipherInfo", GetCipherInfo);
 
   NODE_DEFINE_CONSTANT(target, kWebCryptoCipherEncrypt);
   NODE_DEFINE_CONSTANT(target, kWebCryptoCipherDecrypt);
diff --git a/src/crypto/crypto_context.cc b/src/crypto/crypto_context.cc
index e2291f72b6622f..2265cfb63d0851 100644
--- a/src/crypto/crypto_context.cc
+++ b/src/crypto/crypto_context.cc
@@ -31,6 +31,7 @@ using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::PropertyAttribute;
@@ -256,51 +257,52 @@ Local<FunctionTemplate> SecureContext::GetConstructorTemplate(
     Environment* env) {
   Local<FunctionTemplate> tmpl = env->secure_context_constructor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = env->NewFunctionTemplate(New);
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, New);
     tmpl->InstanceTemplate()->SetInternalFieldCount(
         SecureContext::kInternalFieldCount);
     tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
     tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "SecureContext"));
 
-    env->SetProtoMethod(tmpl, "init", Init);
-    env->SetProtoMethod(tmpl, "setKey", SetKey);
-    env->SetProtoMethod(tmpl, "setCert", SetCert);
-    env->SetProtoMethod(tmpl, "addCACert", AddCACert);
-    env->SetProtoMethod(tmpl, "addCRL", AddCRL);
-    env->SetProtoMethod(tmpl, "addRootCerts", AddRootCerts);
-    env->SetProtoMethod(tmpl, "setCipherSuites", SetCipherSuites);
-    env->SetProtoMethod(tmpl, "setCiphers", SetCiphers);
-    env->SetProtoMethod(tmpl, "setSigalgs", SetSigalgs);
-    env->SetProtoMethod(tmpl, "setECDHCurve", SetECDHCurve);
-    env->SetProtoMethod(tmpl, "setDHParam", SetDHParam);
-    env->SetProtoMethod(tmpl, "setMaxProto", SetMaxProto);
-    env->SetProtoMethod(tmpl, "setMinProto", SetMinProto);
-    env->SetProtoMethod(tmpl, "getMaxProto", GetMaxProto);
-    env->SetProtoMethod(tmpl, "getMinProto", GetMinProto);
-    env->SetProtoMethod(tmpl, "setOptions", SetOptions);
-    env->SetProtoMethod(tmpl, "setSessionIdContext", SetSessionIdContext);
-    env->SetProtoMethod(tmpl, "setSessionTimeout", SetSessionTimeout);
-    env->SetProtoMethod(tmpl, "close", Close);
-    env->SetProtoMethod(tmpl, "loadPKCS12", LoadPKCS12);
-    env->SetProtoMethod(tmpl, "setTicketKeys", SetTicketKeys);
-    env->SetProtoMethod(tmpl, "setFreeListLength", SetFreeListLength);
-    env->SetProtoMethod(tmpl, "enableTicketKeyCallback",
-        EnableTicketKeyCallback);
-
-    env->SetProtoMethodNoSideEffect(tmpl, "getTicketKeys", GetTicketKeys);
-    env->SetProtoMethodNoSideEffect(tmpl, "getCertificate",
-        GetCertificate<true>);
-    env->SetProtoMethodNoSideEffect(tmpl, "getIssuer",
-        GetCertificate<false>);
-
-  #ifndef OPENSSL_NO_ENGINE
-    env->SetProtoMethod(tmpl, "setEngineKey", SetEngineKey);
-    env->SetProtoMethod(tmpl, "setClientCertEngine", SetClientCertEngine);
-  #endif  // !OPENSSL_NO_ENGINE
-
-  #define SET_INTEGER_CONSTANTS(name, value)                                   \
-      tmpl->Set(FIXED_ONE_BYTE_STRING(env->isolate(), name),                   \
-            Integer::NewFromUnsigned(env->isolate(), value));
+    SetProtoMethod(isolate, tmpl, "init", Init);
+    SetProtoMethod(isolate, tmpl, "setKey", SetKey);
+    SetProtoMethod(isolate, tmpl, "setCert", SetCert);
+    SetProtoMethod(isolate, tmpl, "addCACert", AddCACert);
+    SetProtoMethod(isolate, tmpl, "addCRL", AddCRL);
+    SetProtoMethod(isolate, tmpl, "addRootCerts", AddRootCerts);
+    SetProtoMethod(isolate, tmpl, "setCipherSuites", SetCipherSuites);
+    SetProtoMethod(isolate, tmpl, "setCiphers", SetCiphers);
+    SetProtoMethod(isolate, tmpl, "setSigalgs", SetSigalgs);
+    SetProtoMethod(isolate, tmpl, "setECDHCurve", SetECDHCurve);
+    SetProtoMethod(isolate, tmpl, "setDHParam", SetDHParam);
+    SetProtoMethod(isolate, tmpl, "setMaxProto", SetMaxProto);
+    SetProtoMethod(isolate, tmpl, "setMinProto", SetMinProto);
+    SetProtoMethod(isolate, tmpl, "getMaxProto", GetMaxProto);
+    SetProtoMethod(isolate, tmpl, "getMinProto", GetMinProto);
+    SetProtoMethod(isolate, tmpl, "setOptions", SetOptions);
+    SetProtoMethod(isolate, tmpl, "setSessionIdContext", SetSessionIdContext);
+    SetProtoMethod(isolate, tmpl, "setSessionTimeout", SetSessionTimeout);
+    SetProtoMethod(isolate, tmpl, "close", Close);
+    SetProtoMethod(isolate, tmpl, "loadPKCS12", LoadPKCS12);
+    SetProtoMethod(isolate, tmpl, "setTicketKeys", SetTicketKeys);
+    SetProtoMethod(isolate, tmpl, "setFreeListLength", SetFreeListLength);
+    SetProtoMethod(
+        isolate, tmpl, "enableTicketKeyCallback", EnableTicketKeyCallback);
+
+    SetProtoMethodNoSideEffect(isolate, tmpl, "getTicketKeys", GetTicketKeys);
+    SetProtoMethodNoSideEffect(
+        isolate, tmpl, "getCertificate", GetCertificate<true>);
+    SetProtoMethodNoSideEffect(
+        isolate, tmpl, "getIssuer", GetCertificate<false>);
+
+#ifndef OPENSSL_NO_ENGINE
+    SetProtoMethod(isolate, tmpl, "setEngineKey", SetEngineKey);
+    SetProtoMethod(isolate, tmpl, "setClientCertEngine", SetClientCertEngine);
+#endif  // !OPENSSL_NO_ENGINE
+
+#define SET_INTEGER_CONSTANTS(name, value)                                     \
+  tmpl->Set(FIXED_ONE_BYTE_STRING(isolate, name),                              \
+            Integer::NewFromUnsigned(isolate, value));
     SET_INTEGER_CONSTANTS("kTicketKeyReturnIndex", kTicketKeyReturnIndex);
     SET_INTEGER_CONSTANTS("kTicketKeyHMACIndex", kTicketKeyHMACIndex);
     SET_INTEGER_CONSTANTS("kTicketKeyAESIndex", kTicketKeyAESIndex);
@@ -308,14 +310,11 @@ Local<FunctionTemplate> SecureContext::GetConstructorTemplate(
     SET_INTEGER_CONSTANTS("kTicketKeyIVIndex", kTicketKeyIVIndex);
   #undef SET_INTEGER_CONSTANTS
 
-    Local<FunctionTemplate> ctx_getter_templ =
-        FunctionTemplate::New(env->isolate(),
-                              CtxGetter,
-                              Local<Value>(),
-                              Signature::New(env->isolate(), tmpl));
+    Local<FunctionTemplate> ctx_getter_templ = FunctionTemplate::New(
+        isolate, CtxGetter, Local<Value>(), Signature::New(isolate, tmpl));
 
     tmpl->PrototypeTemplate()->SetAccessorProperty(
-        FIXED_ONE_BYTE_STRING(env->isolate(), "_external"),
+        FIXED_ONE_BYTE_STRING(isolate, "_external"),
         ctx_getter_templ,
         Local<FunctionTemplate>(),
         static_cast<PropertyAttribute>(ReadOnly | DontDelete));
@@ -326,17 +325,20 @@ Local<FunctionTemplate> SecureContext::GetConstructorTemplate(
 }
 
 void SecureContext::Initialize(Environment* env, Local<Object> target) {
-  env->SetConstructorFunction(
-      target,
-      "SecureContext",
-      GetConstructorTemplate(env),
-      Environment::SetConstructorFunctionFlag::NONE);
-
-  env->SetMethodNoSideEffect(target, "getRootCertificates",
-                             GetRootCertificates);
+  Local<Context> context = env->context();
+  SetConstructorFunction(context,
+                         target,
+                         "SecureContext",
+                         GetConstructorTemplate(env),
+                         SetConstructorFunctionFlag::NONE);
+
+  SetMethodNoSideEffect(
+      context, target, "getRootCertificates", GetRootCertificates);
   // Exposed for testing purposes only.
-  env->SetMethodNoSideEffect(target, "isExtraRootCertsFileLoaded",
-                             IsExtraRootCertsFileLoaded);
+  SetMethodNoSideEffect(context,
+                        target,
+                        "isExtraRootCertsFileLoaded",
+                        IsExtraRootCertsFileLoaded);
 }
 
 void SecureContext::RegisterExternalReferences(
diff --git a/src/crypto/crypto_dh.cc b/src/crypto/crypto_dh.cc
index c02e22bb542ff5..3f0146e63bece1 100644
--- a/src/crypto/crypto_dh.cc
+++ b/src/crypto/crypto_dh.cc
@@ -13,12 +13,14 @@ namespace node {
 using v8::ArrayBuffer;
 using v8::BackingStore;
 using v8::ConstructorBehavior;
+using v8::Context;
 using v8::DontDelete;
 using v8::FunctionCallback;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
+using v8::Isolate;
 using v8::Just;
 using v8::Local;
 using v8::Maybe;
@@ -56,8 +58,10 @@ DiffieHellman::DiffieHellman(Environment* env, Local<Object> wrap)
 }
 
 void DiffieHellman::Initialize(Environment* env, Local<Object> target) {
-  auto make = [&] (Local<String> name, FunctionCallback callback) {
-    Local<FunctionTemplate> t = env->NewFunctionTemplate(callback);
+  Isolate* isolate = env->isolate();
+  Local<Context> context = env->context();
+  auto make = [&](Local<String> name, FunctionCallback callback) {
+    Local<FunctionTemplate> t = NewFunctionTemplate(isolate, callback);
 
     const PropertyAttribute attributes =
         static_cast<PropertyAttribute>(ReadOnly | DontDelete);
@@ -66,17 +70,17 @@ void DiffieHellman::Initialize(Environment* env, Local<Object> target) {
         DiffieHellman::kInternalFieldCount);
     t->Inherit(BaseObject::GetConstructorTemplate(env));
 
-    env->SetProtoMethod(t, "generateKeys", GenerateKeys);
-    env->SetProtoMethod(t, "computeSecret", ComputeSecret);
-    env->SetProtoMethodNoSideEffect(t, "getPrime", GetPrime);
-    env->SetProtoMethodNoSideEffect(t, "getGenerator", GetGenerator);
-    env->SetProtoMethodNoSideEffect(t, "getPublicKey", GetPublicKey);
-    env->SetProtoMethodNoSideEffect(t, "getPrivateKey", GetPrivateKey);
-    env->SetProtoMethod(t, "setPublicKey", SetPublicKey);
-    env->SetProtoMethod(t, "setPrivateKey", SetPrivateKey);
+    SetProtoMethod(isolate, t, "generateKeys", GenerateKeys);
+    SetProtoMethod(isolate, t, "computeSecret", ComputeSecret);
+    SetProtoMethodNoSideEffect(isolate, t, "getPrime", GetPrime);
+    SetProtoMethodNoSideEffect(isolate, t, "getGenerator", GetGenerator);
+    SetProtoMethodNoSideEffect(isolate, t, "getPublicKey", GetPublicKey);
+    SetProtoMethodNoSideEffect(isolate, t, "getPrivateKey", GetPrivateKey);
+    SetProtoMethod(isolate, t, "setPublicKey", SetPublicKey);
+    SetProtoMethod(isolate, t, "setPrivateKey", SetPrivateKey);
 
     Local<FunctionTemplate> verify_error_getter_templ =
-        FunctionTemplate::New(env->isolate(),
+        FunctionTemplate::New(isolate,
                               DiffieHellman::VerifyErrorGetter,
                               Local<Value>(),
                               Signature::New(env->isolate(), t),
@@ -90,14 +94,15 @@ void DiffieHellman::Initialize(Environment* env, Local<Object> target) {
         Local<FunctionTemplate>(),
         attributes);
 
-    env->SetConstructorFunction(target, name, t);
+    SetConstructorFunction(context, target, name, t);
   };
 
   make(FIXED_ONE_BYTE_STRING(env->isolate(), "DiffieHellman"), New);
   make(FIXED_ONE_BYTE_STRING(env->isolate(), "DiffieHellmanGroup"),
        DiffieHellmanGroup);
 
-  env->SetMethodNoSideEffect(target, "statelessDH", DiffieHellman::Stateless);
+  SetMethodNoSideEffect(
+      context, target, "statelessDH", DiffieHellman::Stateless);
   DHKeyPairGenJob::Initialize(env, target);
   DHKeyExportJob::Initialize(env, target);
   DHBitsJob::Initialize(env, target);
diff --git a/src/crypto/crypto_ec.cc b/src/crypto/crypto_ec.cc
index e9fe65ffd571ca..ed9d96a3d56d13 100644
--- a/src/crypto/crypto_ec.cc
+++ b/src/crypto/crypto_ec.cc
@@ -21,9 +21,11 @@ namespace node {
 using v8::Array;
 using v8::ArrayBuffer;
 using v8::BackingStore;
+using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::Int32;
+using v8::Isolate;
 using v8::Just;
 using v8::JustVoid;
 using v8::Local;
@@ -60,22 +62,25 @@ int GetOKPCurveFromName(const char* name) {
 }
 
 void ECDH::Initialize(Environment* env, Local<Object> target) {
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  Local<Context> context = env->context();
+
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
 
   t->InstanceTemplate()->SetInternalFieldCount(ECDH::kInternalFieldCount);
 
-  env->SetProtoMethod(t, "generateKeys", GenerateKeys);
-  env->SetProtoMethod(t, "computeSecret", ComputeSecret);
-  env->SetProtoMethodNoSideEffect(t, "getPublicKey", GetPublicKey);
-  env->SetProtoMethodNoSideEffect(t, "getPrivateKey", GetPrivateKey);
-  env->SetProtoMethod(t, "setPublicKey", SetPublicKey);
-  env->SetProtoMethod(t, "setPrivateKey", SetPrivateKey);
+  SetProtoMethod(isolate, t, "generateKeys", GenerateKeys);
+  SetProtoMethod(isolate, t, "computeSecret", ComputeSecret);
+  SetProtoMethodNoSideEffect(isolate, t, "getPublicKey", GetPublicKey);
+  SetProtoMethodNoSideEffect(isolate, t, "getPrivateKey", GetPrivateKey);
+  SetProtoMethod(isolate, t, "setPublicKey", SetPublicKey);
+  SetProtoMethod(isolate, t, "setPrivateKey", SetPrivateKey);
 
-  env->SetConstructorFunction(target, "ECDH", t);
+  SetConstructorFunction(context, target, "ECDH", t);
 
-  env->SetMethodNoSideEffect(target, "ECDHConvertKey", ECDH::ConvertKey);
-  env->SetMethodNoSideEffect(target, "getCurves", ECDH::GetCurves);
+  SetMethodNoSideEffect(context, target, "ECDHConvertKey", ECDH::ConvertKey);
+  SetMethodNoSideEffect(context, target, "getCurves", ECDH::GetCurves);
 
   ECDHBitsJob::Initialize(env, target);
   ECKeyPairGenJob::Initialize(env, target);
diff --git a/src/crypto/crypto_hash.cc b/src/crypto/crypto_hash.cc
index 8f7128569c7aa5..00ec9d60530dd2 100644
--- a/src/crypto/crypto_hash.cc
+++ b/src/crypto/crypto_hash.cc
@@ -11,8 +11,10 @@
 
 namespace node {
 
+using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
+using v8::Isolate;
 using v8::Just;
 using v8::Local;
 using v8::Maybe;
@@ -51,18 +53,20 @@ void Hash::GetHashes(const FunctionCallbackInfo<Value>& args) {
 }
 
 void Hash::Initialize(Environment* env, Local<Object> target) {
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  Local<Context> context = env->context();
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
 
   t->InstanceTemplate()->SetInternalFieldCount(
       Hash::kInternalFieldCount);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "update", HashUpdate);
-  env->SetProtoMethod(t, "digest", HashDigest);
+  SetProtoMethod(isolate, t, "update", HashUpdate);
+  SetProtoMethod(isolate, t, "digest", HashDigest);
 
-  env->SetConstructorFunction(target, "Hash", t);
+  SetConstructorFunction(context, target, "Hash", t);
 
-  env->SetMethodNoSideEffect(target, "getHashes", GetHashes);
+  SetMethodNoSideEffect(context, target, "getHashes", GetHashes);
 
   HashJob::Initialize(env, target);
 }
diff --git a/src/crypto/crypto_hmac.cc b/src/crypto/crypto_hmac.cc
index 296ae541a3e68f..117d91da85e932 100644
--- a/src/crypto/crypto_hmac.cc
+++ b/src/crypto/crypto_hmac.cc
@@ -16,6 +16,7 @@ namespace node {
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
+using v8::Isolate;
 using v8::Just;
 using v8::Local;
 using v8::Maybe;
@@ -37,17 +38,18 @@ void Hmac::MemoryInfo(MemoryTracker* tracker) const {
 }
 
 void Hmac::Initialize(Environment* env, Local<Object> target) {
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
 
   t->InstanceTemplate()->SetInternalFieldCount(
       Hmac::kInternalFieldCount);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "init", HmacInit);
-  env->SetProtoMethod(t, "update", HmacUpdate);
-  env->SetProtoMethod(t, "digest", HmacDigest);
+  SetProtoMethod(isolate, t, "init", HmacInit);
+  SetProtoMethod(isolate, t, "update", HmacUpdate);
+  SetProtoMethod(isolate, t, "digest", HmacDigest);
 
-  env->SetConstructorFunction(target, "Hmac", t);
+  SetConstructorFunction(env->context(), target, "Hmac", t);
 
   HmacJob::Initialize(env, target);
 }
diff --git a/src/crypto/crypto_keys.cc b/src/crypto/crypto_keys.cc
index 8999e7ab03c9a9..5a7ef797de596a 100644
--- a/src/crypto/crypto_keys.cc
+++ b/src/crypto/crypto_keys.cc
@@ -24,6 +24,7 @@ using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::Int32;
+using v8::Isolate;
 using v8::Just;
 using v8::Local;
 using v8::Maybe;
@@ -904,23 +905,24 @@ v8::Local<v8::Function> KeyObjectHandle::Initialize(Environment* env) {
   if (!templ.IsEmpty()) {
     return templ;
   }
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->InstanceTemplate()->SetInternalFieldCount(
       KeyObjectHandle::kInternalFieldCount);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "init", Init);
-  env->SetProtoMethodNoSideEffect(t, "getSymmetricKeySize",
-                                  GetSymmetricKeySize);
-  env->SetProtoMethodNoSideEffect(t, "getAsymmetricKeyType",
-                                  GetAsymmetricKeyType);
-  env->SetProtoMethod(t, "export", Export);
-  env->SetProtoMethod(t, "exportJwk", ExportJWK);
-  env->SetProtoMethod(t, "initECRaw", InitECRaw);
-  env->SetProtoMethod(t, "initEDRaw", InitEDRaw);
-  env->SetProtoMethod(t, "initJwk", InitJWK);
-  env->SetProtoMethod(t, "keyDetail", GetKeyDetail);
-  env->SetProtoMethod(t, "equals", Equals);
+  SetProtoMethod(isolate, t, "init", Init);
+  SetProtoMethodNoSideEffect(
+      isolate, t, "getSymmetricKeySize", GetSymmetricKeySize);
+  SetProtoMethodNoSideEffect(
+      isolate, t, "getAsymmetricKeyType", GetAsymmetricKeyType);
+  SetProtoMethod(isolate, t, "export", Export);
+  SetProtoMethod(isolate, t, "exportJwk", ExportJWK);
+  SetProtoMethod(isolate, t, "initECRaw", InitECRaw);
+  SetProtoMethod(isolate, t, "initEDRaw", InitEDRaw);
+  SetProtoMethod(isolate, t, "initJwk", InitJWK);
+  SetProtoMethod(isolate, t, "keyDetail", GetKeyDetail);
+  SetProtoMethod(isolate, t, "equals", Equals);
 
   auto function = t->GetFunction(env->context()).ToLocalChecked();
   env->set_crypto_key_object_handle_constructor(function);
@@ -1315,8 +1317,10 @@ void KeyObjectHandle::ExportJWK(
 }
 
 void NativeKeyObject::Initialize(Environment* env, Local<Object> target) {
-  env->SetMethod(target, "createNativeKeyObjectClass",
-                 NativeKeyObject::CreateNativeKeyObjectClass);
+  SetMethod(env->context(),
+            target,
+            "createNativeKeyObjectClass",
+            NativeKeyObject::CreateNativeKeyObjectClass);
 }
 
 void NativeKeyObject::RegisterExternalReferences(
@@ -1336,12 +1340,14 @@ void NativeKeyObject::New(const FunctionCallbackInfo<Value>& args) {
 void NativeKeyObject::CreateNativeKeyObjectClass(
     const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
+  Isolate* isolate = env->isolate();
 
   CHECK_EQ(args.Length(), 1);
   Local<Value> callback = args[0];
   CHECK(callback->IsFunction());
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(NativeKeyObject::New);
+  Local<FunctionTemplate> t =
+      NewFunctionTemplate(isolate, NativeKeyObject::New);
   t->InstanceTemplate()->SetInternalFieldCount(
       KeyObjectHandle::kInternalFieldCount);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
diff --git a/src/crypto/crypto_sig.cc b/src/crypto/crypto_sig.cc
index c4483a71744e35..cb22809387c17b 100644
--- a/src/crypto/crypto_sig.cc
+++ b/src/crypto/crypto_sig.cc
@@ -17,6 +17,7 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
+using v8::Isolate;
 using v8::Just;
 using v8::Local;
 using v8::Maybe;
@@ -329,17 +330,18 @@ Sign::Sign(Environment* env, Local<Object> wrap) : SignBase(env, wrap) {
 }
 
 void Sign::Initialize(Environment* env, Local<Object> target) {
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
 
   t->InstanceTemplate()->SetInternalFieldCount(
       SignBase::kInternalFieldCount);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "init", SignInit);
-  env->SetProtoMethod(t, "update", SignUpdate);
-  env->SetProtoMethod(t, "sign", SignFinal);
+  SetProtoMethod(isolate, t, "init", SignInit);
+  SetProtoMethod(isolate, t, "update", SignUpdate);
+  SetProtoMethod(isolate, t, "sign", SignFinal);
 
-  env->SetConstructorFunction(target, "Sign", t);
+  SetConstructorFunction(env->context(), target, "Sign", t);
 
   SignJob::Initialize(env, target);
 
@@ -458,17 +460,18 @@ Verify::Verify(Environment* env, Local<Object> wrap)
 }
 
 void Verify::Initialize(Environment* env, Local<Object> target) {
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
 
   t->InstanceTemplate()->SetInternalFieldCount(
       SignBase::kInternalFieldCount);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "init", VerifyInit);
-  env->SetProtoMethod(t, "update", VerifyUpdate);
-  env->SetProtoMethod(t, "verify", VerifyFinal);
+  SetProtoMethod(isolate, t, "init", VerifyInit);
+  SetProtoMethod(isolate, t, "update", VerifyUpdate);
+  SetProtoMethod(isolate, t, "verify", VerifyFinal);
 
-  env->SetConstructorFunction(target, "Verify", t);
+  SetConstructorFunction(env->context(), target, "Verify", t);
 }
 
 void Verify::RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/crypto/crypto_spkac.cc b/src/crypto/crypto_spkac.cc
index c29d94edc0f9f9..cc31808e7cef8f 100644
--- a/src/crypto/crypto_spkac.cc
+++ b/src/crypto/crypto_spkac.cc
@@ -8,6 +8,7 @@
 
 namespace node {
 
+using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::Local;
 using v8::Object;
@@ -128,9 +129,12 @@ void ExportChallenge(const FunctionCallbackInfo<Value>& args) {
 }
 
 void Initialize(Environment* env, Local<Object> target) {
-  env->SetMethodNoSideEffect(target, "certVerifySpkac", VerifySpkac);
-  env->SetMethodNoSideEffect(target, "certExportPublicKey", ExportPublicKey);
-  env->SetMethodNoSideEffect(target, "certExportChallenge", ExportChallenge);
+  Local<Context> context = env->context();
+  SetMethodNoSideEffect(context, target, "certVerifySpkac", VerifySpkac);
+  SetMethodNoSideEffect(
+      context, target, "certExportPublicKey", ExportPublicKey);
+  SetMethodNoSideEffect(
+      context, target, "certExportChallenge", ExportChallenge);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/crypto/crypto_timing.cc b/src/crypto/crypto_timing.cc
index 3cc1a12ec009d6..8904f6b140dbb5 100644
--- a/src/crypto/crypto_timing.cc
+++ b/src/crypto/crypto_timing.cc
@@ -47,7 +47,8 @@ void TimingSafeEqual(const FunctionCallbackInfo<Value>& args) {
 }
 
 void Initialize(Environment* env, Local<Object> target) {
-  env->SetMethodNoSideEffect(target, "timingSafeEqual", TimingSafeEqual);
+  SetMethodNoSideEffect(
+      env->context(), target, "timingSafeEqual", TimingSafeEqual);
 }
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
   registry->Register(TimingSafeEqual);
diff --git a/src/crypto/crypto_tls.cc b/src/crypto/crypto_tls.cc
index a192956f0f7cfe..7ef47a5181abf8 100644
--- a/src/crypto/crypto_tls.cc
+++ b/src/crypto/crypto_tls.cc
@@ -2029,8 +2029,9 @@ void TLSWrap::Initialize(
     Local<Context> context,
     void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  env->SetMethod(target, "wrap", TLSWrap::Wrap);
+  SetMethod(context, target, "wrap", TLSWrap::Wrap);
 
   NODE_DEFINE_CONSTANT(target, HAVE_SSL_TRACE);
 
@@ -2053,54 +2054,56 @@ void TLSWrap::Initialize(
 
   t->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "certCbDone", CertCbDone);
-  env->SetProtoMethod(t, "destroySSL", DestroySSL);
-  env->SetProtoMethod(t, "enableCertCb", EnableCertCb);
-  env->SetProtoMethod(t, "endParser", EndParser);
-  env->SetProtoMethod(t, "enableKeylogCallback", EnableKeylogCallback);
-  env->SetProtoMethod(t, "enableSessionCallbacks", EnableSessionCallbacks);
-  env->SetProtoMethod(t, "enableTrace", EnableTrace);
-  env->SetProtoMethod(t, "getServername", GetServername);
-  env->SetProtoMethod(t, "loadSession", LoadSession);
-  env->SetProtoMethod(t, "newSessionDone", NewSessionDone);
-  env->SetProtoMethod(t, "receive", Receive);
-  env->SetProtoMethod(t, "renegotiate", Renegotiate);
-  env->SetProtoMethod(t, "requestOCSP", RequestOCSP);
-  env->SetProtoMethod(t, "setALPNProtocols", SetALPNProtocols);
-  env->SetProtoMethod(t, "setOCSPResponse", SetOCSPResponse);
-  env->SetProtoMethod(t, "setServername", SetServername);
-  env->SetProtoMethod(t, "setSession", SetSession);
-  env->SetProtoMethod(t, "setVerifyMode", SetVerifyMode);
-  env->SetProtoMethod(t, "start", Start);
-
-  env->SetProtoMethodNoSideEffect(t, "exportKeyingMaterial",
-                                  ExportKeyingMaterial);
-  env->SetProtoMethodNoSideEffect(t, "isSessionReused", IsSessionReused);
-  env->SetProtoMethodNoSideEffect(t, "getALPNNegotiatedProtocol",
-                                  GetALPNNegotiatedProto);
-  env->SetProtoMethodNoSideEffect(t, "getCertificate", GetCertificate);
-  env->SetProtoMethodNoSideEffect(t, "getX509Certificate", GetX509Certificate);
-  env->SetProtoMethodNoSideEffect(t, "getCipher", GetCipher);
-  env->SetProtoMethodNoSideEffect(t, "getEphemeralKeyInfo",
-                                  GetEphemeralKeyInfo);
-  env->SetProtoMethodNoSideEffect(t, "getFinished", GetFinished);
-  env->SetProtoMethodNoSideEffect(t, "getPeerCertificate", GetPeerCertificate);
-  env->SetProtoMethodNoSideEffect(t, "getPeerX509Certificate",
-                                  GetPeerX509Certificate);
-  env->SetProtoMethodNoSideEffect(t, "getPeerFinished", GetPeerFinished);
-  env->SetProtoMethodNoSideEffect(t, "getProtocol", GetProtocol);
-  env->SetProtoMethodNoSideEffect(t, "getSession", GetSession);
-  env->SetProtoMethodNoSideEffect(t, "getSharedSigalgs", GetSharedSigalgs);
-  env->SetProtoMethodNoSideEffect(t, "getTLSTicket", GetTLSTicket);
-  env->SetProtoMethodNoSideEffect(t, "verifyError", VerifyError);
+  SetProtoMethod(isolate, t, "certCbDone", CertCbDone);
+  SetProtoMethod(isolate, t, "destroySSL", DestroySSL);
+  SetProtoMethod(isolate, t, "enableCertCb", EnableCertCb);
+  SetProtoMethod(isolate, t, "endParser", EndParser);
+  SetProtoMethod(isolate, t, "enableKeylogCallback", EnableKeylogCallback);
+  SetProtoMethod(isolate, t, "enableSessionCallbacks", EnableSessionCallbacks);
+  SetProtoMethod(isolate, t, "enableTrace", EnableTrace);
+  SetProtoMethod(isolate, t, "getServername", GetServername);
+  SetProtoMethod(isolate, t, "loadSession", LoadSession);
+  SetProtoMethod(isolate, t, "newSessionDone", NewSessionDone);
+  SetProtoMethod(isolate, t, "receive", Receive);
+  SetProtoMethod(isolate, t, "renegotiate", Renegotiate);
+  SetProtoMethod(isolate, t, "requestOCSP", RequestOCSP);
+  SetProtoMethod(isolate, t, "setALPNProtocols", SetALPNProtocols);
+  SetProtoMethod(isolate, t, "setOCSPResponse", SetOCSPResponse);
+  SetProtoMethod(isolate, t, "setServername", SetServername);
+  SetProtoMethod(isolate, t, "setSession", SetSession);
+  SetProtoMethod(isolate, t, "setVerifyMode", SetVerifyMode);
+  SetProtoMethod(isolate, t, "start", Start);
+
+  SetProtoMethodNoSideEffect(
+      isolate, t, "exportKeyingMaterial", ExportKeyingMaterial);
+  SetProtoMethodNoSideEffect(isolate, t, "isSessionReused", IsSessionReused);
+  SetProtoMethodNoSideEffect(
+      isolate, t, "getALPNNegotiatedProtocol", GetALPNNegotiatedProto);
+  SetProtoMethodNoSideEffect(isolate, t, "getCertificate", GetCertificate);
+  SetProtoMethodNoSideEffect(
+      isolate, t, "getX509Certificate", GetX509Certificate);
+  SetProtoMethodNoSideEffect(isolate, t, "getCipher", GetCipher);
+  SetProtoMethodNoSideEffect(
+      isolate, t, "getEphemeralKeyInfo", GetEphemeralKeyInfo);
+  SetProtoMethodNoSideEffect(isolate, t, "getFinished", GetFinished);
+  SetProtoMethodNoSideEffect(
+      isolate, t, "getPeerCertificate", GetPeerCertificate);
+  SetProtoMethodNoSideEffect(
+      isolate, t, "getPeerX509Certificate", GetPeerX509Certificate);
+  SetProtoMethodNoSideEffect(isolate, t, "getPeerFinished", GetPeerFinished);
+  SetProtoMethodNoSideEffect(isolate, t, "getProtocol", GetProtocol);
+  SetProtoMethodNoSideEffect(isolate, t, "getSession", GetSession);
+  SetProtoMethodNoSideEffect(isolate, t, "getSharedSigalgs", GetSharedSigalgs);
+  SetProtoMethodNoSideEffect(isolate, t, "getTLSTicket", GetTLSTicket);
+  SetProtoMethodNoSideEffect(isolate, t, "verifyError", VerifyError);
 
 #ifdef SSL_set_max_send_fragment
-  env->SetProtoMethod(t, "setMaxSendFragment", SetMaxSendFragment);
+  SetProtoMethod(isolate, t, "setMaxSendFragment", SetMaxSendFragment);
 #endif  // SSL_set_max_send_fragment
 
 #ifndef OPENSSL_NO_PSK
-  env->SetProtoMethod(t, "enablePskCallback", EnablePskCallback);
-  env->SetProtoMethod(t, "setPskIdentityHint", SetPskIdentityHint);
+  SetProtoMethod(isolate, t, "enablePskCallback", EnablePskCallback);
+  SetProtoMethod(isolate, t, "setPskIdentityHint", SetPskIdentityHint);
 #endif  // !OPENSSL_NO_PSK
 
   StreamBase::AddMethods(env, t);
diff --git a/src/crypto/crypto_util.cc b/src/crypto/crypto_util.cc
index 58a5d88d7a10de..54ac285e7f7671 100644
--- a/src/crypto/crypto_util.cc
+++ b/src/crypto/crypto_util.cc
@@ -739,19 +739,20 @@ void SecureHeapUsed(const FunctionCallbackInfo<Value>& args) {
 
 namespace Util {
 void Initialize(Environment* env, Local<Object> target) {
+  Local<Context> context = env->context();
 #ifndef OPENSSL_NO_ENGINE
-  env->SetMethod(target, "setEngine", SetEngine);
+  SetMethod(context, target, "setEngine", SetEngine);
 #endif  // !OPENSSL_NO_ENGINE
 
-  env->SetMethodNoSideEffect(target, "getFipsCrypto", GetFipsCrypto);
-  env->SetMethod(target, "setFipsCrypto", SetFipsCrypto);
-  env->SetMethodNoSideEffect(target, "testFipsCrypto", TestFipsCrypto);
+  SetMethodNoSideEffect(context, target, "getFipsCrypto", GetFipsCrypto);
+  SetMethod(context, target, "setFipsCrypto", SetFipsCrypto);
+  SetMethodNoSideEffect(context, target, "testFipsCrypto", TestFipsCrypto);
 
   NODE_DEFINE_CONSTANT(target, kCryptoJobAsync);
   NODE_DEFINE_CONSTANT(target, kCryptoJobSync);
 
-  env->SetMethod(target, "secureBuffer", SecureBuffer);
-  env->SetMethod(target, "secureHeapUsed", SecureHeapUsed);
+  SetMethod(context, target, "secureBuffer", SecureBuffer);
+  SetMethod(context, target, "secureHeapUsed", SecureHeapUsed);
 }
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
 #ifndef OPENSSL_NO_ENGINE
diff --git a/src/crypto/crypto_util.h b/src/crypto/crypto_util.h
index 07ea8e44da3e54..3a1d21b4f567d5 100644
--- a/src/crypto/crypto_util.h
+++ b/src/crypto/crypto_util.h
@@ -418,12 +418,15 @@ class CryptoJob : public AsyncWrap, public ThreadPoolWork {
       v8::FunctionCallback new_fn,
       Environment* env,
       v8::Local<v8::Object> target) {
-    v8::Local<v8::FunctionTemplate> job = env->NewFunctionTemplate(new_fn);
+    v8::Isolate* isolate = env->isolate();
+    v8::HandleScope scope(isolate);
+    v8::Local<v8::Context> context = env->context();
+    v8::Local<v8::FunctionTemplate> job = NewFunctionTemplate(isolate, new_fn);
     job->Inherit(AsyncWrap::GetConstructorTemplate(env));
     job->InstanceTemplate()->SetInternalFieldCount(
         AsyncWrap::kInternalFieldCount);
-    env->SetProtoMethod(job, "run", Run);
-    env->SetConstructorFunction(target, CryptoJobTraits::JobName, job);
+    SetProtoMethod(isolate, job, "run", Run);
+    SetConstructorFunction(context, target, CryptoJobTraits::JobName, job);
   }
 
   static void RegisterExternalReferences(v8::FunctionCallback new_fn,
diff --git a/src/crypto/crypto_x509.cc b/src/crypto/crypto_x509.cc
index 398b1a85795431..a8c4255d52d7e5 100644
--- a/src/crypto/crypto_x509.cc
+++ b/src/crypto/crypto_x509.cc
@@ -21,6 +21,7 @@ using v8::EscapableHandleScope;
 using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
+using v8::Isolate;
 using v8::Local;
 using v8::MaybeLocal;
 using v8::Object;
@@ -54,35 +55,36 @@ Local<FunctionTemplate> X509Certificate::GetConstructorTemplate(
     Environment* env) {
   Local<FunctionTemplate> tmpl = env->x509_constructor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = FunctionTemplate::New(env->isolate());
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, nullptr);
     tmpl->InstanceTemplate()->SetInternalFieldCount(
         BaseObject::kInternalFieldCount);
     tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
     tmpl->SetClassName(
         FIXED_ONE_BYTE_STRING(env->isolate(), "X509Certificate"));
-    env->SetProtoMethod(tmpl, "subject", Subject);
-    env->SetProtoMethod(tmpl, "subjectAltName", SubjectAltName);
-    env->SetProtoMethod(tmpl, "infoAccess", InfoAccess);
-    env->SetProtoMethod(tmpl, "issuer", Issuer);
-    env->SetProtoMethod(tmpl, "validTo", ValidTo);
-    env->SetProtoMethod(tmpl, "validFrom", ValidFrom);
-    env->SetProtoMethod(tmpl, "fingerprint", Fingerprint);
-    env->SetProtoMethod(tmpl, "fingerprint256", Fingerprint256);
-    env->SetProtoMethod(tmpl, "fingerprint512", Fingerprint512);
-    env->SetProtoMethod(tmpl, "keyUsage", KeyUsage);
-    env->SetProtoMethod(tmpl, "serialNumber", SerialNumber);
-    env->SetProtoMethod(tmpl, "pem", Pem);
-    env->SetProtoMethod(tmpl, "raw", Raw);
-    env->SetProtoMethod(tmpl, "publicKey", PublicKey);
-    env->SetProtoMethod(tmpl, "checkCA", CheckCA);
-    env->SetProtoMethod(tmpl, "checkHost", CheckHost);
-    env->SetProtoMethod(tmpl, "checkEmail", CheckEmail);
-    env->SetProtoMethod(tmpl, "checkIP", CheckIP);
-    env->SetProtoMethod(tmpl, "checkIssued", CheckIssued);
-    env->SetProtoMethod(tmpl, "checkPrivateKey", CheckPrivateKey);
-    env->SetProtoMethod(tmpl, "verify", Verify);
-    env->SetProtoMethod(tmpl, "toLegacy", ToLegacy);
-    env->SetProtoMethod(tmpl, "getIssuerCert", GetIssuerCert);
+    SetProtoMethod(isolate, tmpl, "subject", Subject);
+    SetProtoMethod(isolate, tmpl, "subjectAltName", SubjectAltName);
+    SetProtoMethod(isolate, tmpl, "infoAccess", InfoAccess);
+    SetProtoMethod(isolate, tmpl, "issuer", Issuer);
+    SetProtoMethod(isolate, tmpl, "validTo", ValidTo);
+    SetProtoMethod(isolate, tmpl, "validFrom", ValidFrom);
+    SetProtoMethod(isolate, tmpl, "fingerprint", Fingerprint);
+    SetProtoMethod(isolate, tmpl, "fingerprint256", Fingerprint256);
+    SetProtoMethod(isolate, tmpl, "fingerprint512", Fingerprint512);
+    SetProtoMethod(isolate, tmpl, "keyUsage", KeyUsage);
+    SetProtoMethod(isolate, tmpl, "serialNumber", SerialNumber);
+    SetProtoMethod(isolate, tmpl, "pem", Pem);
+    SetProtoMethod(isolate, tmpl, "raw", Raw);
+    SetProtoMethod(isolate, tmpl, "publicKey", PublicKey);
+    SetProtoMethod(isolate, tmpl, "checkCA", CheckCA);
+    SetProtoMethod(isolate, tmpl, "checkHost", CheckHost);
+    SetProtoMethod(isolate, tmpl, "checkEmail", CheckEmail);
+    SetProtoMethod(isolate, tmpl, "checkIP", CheckIP);
+    SetProtoMethod(isolate, tmpl, "checkIssued", CheckIssued);
+    SetProtoMethod(isolate, tmpl, "checkPrivateKey", CheckPrivateKey);
+    SetProtoMethod(isolate, tmpl, "verify", Verify);
+    SetProtoMethod(isolate, tmpl, "toLegacy", ToLegacy);
+    SetProtoMethod(isolate, tmpl, "getIssuerCert", GetIssuerCert);
     env->set_x509_constructor_template(tmpl);
   }
   return tmpl;
@@ -543,7 +545,7 @@ std::unique_ptr<worker::TransferData> X509Certificate::CloneForMessaging()
 
 
 void X509Certificate::Initialize(Environment* env, Local<Object> target) {
-  env->SetMethod(target, "parseX509", X509Certificate::Parse);
+  SetMethod(env->context(), target, "parseX509", X509Certificate::Parse);
 
   NODE_DEFINE_CONSTANT(target, X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT);
   NODE_DEFINE_CONSTANT(target, X509_CHECK_FLAG_NEVER_CHECK_SUBJECT);
diff --git a/src/env.cc b/src/env.cc
index 5350c0d7cba98c..01045d1c62a12a 100644
--- a/src/env.cc
+++ b/src/env.cc
@@ -501,147 +501,6 @@ std::unique_ptr<v8::BackingStore> Environment::release_managed_buffer(
   return bs;
 }
 
-Local<v8::FunctionTemplate> Environment::NewFunctionTemplate(
-    v8::FunctionCallback callback,
-    Local<v8::Signature> signature,
-    v8::ConstructorBehavior behavior,
-    v8::SideEffectType side_effect_type,
-    const v8::CFunction* c_function) {
-  return v8::FunctionTemplate::New(isolate(),
-                                   callback,
-                                   Local<v8::Value>(),
-                                   signature,
-                                   0,
-                                   behavior,
-                                   side_effect_type,
-                                   c_function);
-}
-
-void Environment::SetMethod(Local<v8::Object> that,
-                            const char* name,
-                            v8::FunctionCallback callback) {
-  Local<v8::Context> context = isolate()->GetCurrentContext();
-  Local<v8::Function> function =
-      NewFunctionTemplate(callback,
-                          Local<v8::Signature>(),
-                          v8::ConstructorBehavior::kThrow,
-                          v8::SideEffectType::kHasSideEffect)
-          ->GetFunction(context)
-          .ToLocalChecked();
-  // kInternalized strings are created in the old space.
-  const v8::NewStringType type = v8::NewStringType::kInternalized;
-  Local<v8::String> name_string =
-      v8::String::NewFromUtf8(isolate(), name, type).ToLocalChecked();
-  that->Set(context, name_string, function).Check();
-  function->SetName(name_string);  // NODE_SET_METHOD() compatibility.
-}
-
-void Environment::SetFastMethod(Local<v8::Object> that,
-                                const char* name,
-                                v8::FunctionCallback slow_callback,
-                                const v8::CFunction* c_function) {
-  Local<v8::Context> context = isolate()->GetCurrentContext();
-  Local<v8::Function> function =
-      NewFunctionTemplate(slow_callback,
-                          Local<v8::Signature>(),
-                          v8::ConstructorBehavior::kThrow,
-                          v8::SideEffectType::kHasNoSideEffect,
-                          c_function)
-          ->GetFunction(context)
-          .ToLocalChecked();
-  const v8::NewStringType type = v8::NewStringType::kInternalized;
-  Local<v8::String> name_string =
-      v8::String::NewFromUtf8(isolate(), name, type).ToLocalChecked();
-  that->Set(context, name_string, function).Check();
-}
-
-void Environment::SetMethodNoSideEffect(Local<v8::Object> that,
-                                        const char* name,
-                                        v8::FunctionCallback callback) {
-  Local<v8::Context> context = isolate()->GetCurrentContext();
-  Local<v8::Function> function =
-      NewFunctionTemplate(callback,
-                          Local<v8::Signature>(),
-                          v8::ConstructorBehavior::kThrow,
-                          v8::SideEffectType::kHasNoSideEffect)
-          ->GetFunction(context)
-          .ToLocalChecked();
-  // kInternalized strings are created in the old space.
-  const v8::NewStringType type = v8::NewStringType::kInternalized;
-  Local<v8::String> name_string =
-      v8::String::NewFromUtf8(isolate(), name, type).ToLocalChecked();
-  that->Set(context, name_string, function).Check();
-  function->SetName(name_string);  // NODE_SET_METHOD() compatibility.
-}
-
-void Environment::SetProtoMethod(Local<v8::FunctionTemplate> that,
-                                 const char* name,
-                                 v8::FunctionCallback callback) {
-  Local<v8::Signature> signature = v8::Signature::New(isolate(), that);
-  Local<v8::FunctionTemplate> t =
-      NewFunctionTemplate(callback,
-                          signature,
-                          v8::ConstructorBehavior::kThrow,
-                          v8::SideEffectType::kHasSideEffect);
-  // kInternalized strings are created in the old space.
-  const v8::NewStringType type = v8::NewStringType::kInternalized;
-  Local<v8::String> name_string =
-      v8::String::NewFromUtf8(isolate(), name, type).ToLocalChecked();
-  that->PrototypeTemplate()->Set(name_string, t);
-  t->SetClassName(name_string);  // NODE_SET_PROTOTYPE_METHOD() compatibility.
-}
-
-void Environment::SetProtoMethodNoSideEffect(Local<v8::FunctionTemplate> that,
-                                             const char* name,
-                                             v8::FunctionCallback callback) {
-  Local<v8::Signature> signature = v8::Signature::New(isolate(), that);
-  Local<v8::FunctionTemplate> t =
-      NewFunctionTemplate(callback,
-                          signature,
-                          v8::ConstructorBehavior::kThrow,
-                          v8::SideEffectType::kHasNoSideEffect);
-  // kInternalized strings are created in the old space.
-  const v8::NewStringType type = v8::NewStringType::kInternalized;
-  Local<v8::String> name_string =
-      v8::String::NewFromUtf8(isolate(), name, type).ToLocalChecked();
-  that->PrototypeTemplate()->Set(name_string, t);
-  t->SetClassName(name_string);  // NODE_SET_PROTOTYPE_METHOD() compatibility.
-}
-
-void Environment::SetInstanceMethod(Local<v8::FunctionTemplate> that,
-                                    const char* name,
-                                    v8::FunctionCallback callback) {
-  Local<v8::Signature> signature = v8::Signature::New(isolate(), that);
-  Local<v8::FunctionTemplate> t =
-      NewFunctionTemplate(callback,
-                          signature,
-                          v8::ConstructorBehavior::kThrow,
-                          v8::SideEffectType::kHasSideEffect);
-  // kInternalized strings are created in the old space.
-  const v8::NewStringType type = v8::NewStringType::kInternalized;
-  Local<v8::String> name_string =
-      v8::String::NewFromUtf8(isolate(), name, type).ToLocalChecked();
-  that->InstanceTemplate()->Set(name_string, t);
-  t->SetClassName(name_string);
-}
-
-void Environment::SetConstructorFunction(Local<v8::Object> that,
-                                         const char* name,
-                                         Local<v8::FunctionTemplate> tmpl,
-                                         SetConstructorFunctionFlag flag) {
-  SetConstructorFunction(that, OneByteString(isolate(), name), tmpl, flag);
-}
-
-void Environment::SetConstructorFunction(Local<v8::Object> that,
-                                         Local<v8::String> name,
-                                         Local<v8::FunctionTemplate> tmpl,
-                                         SetConstructorFunctionFlag flag) {
-  if (LIKELY(flag == SetConstructorFunctionFlag::SET_CLASS_NAME))
-    tmpl->SetClassName(name);
-  that->Set(context(), name, tmpl->GetFunction(context()).ToLocalChecked())
-      .Check();
-}
-
 void Environment::CreateProperties() {
   HandleScope handle_scope(isolate_);
   Local<Context> ctx = context();
@@ -2181,8 +2040,8 @@ void BaseObject::LazilyInitializedJSTemplateConstructor(
 
 Local<FunctionTemplate> BaseObject::MakeLazilyInitializedJSTemplate(
     Environment* env) {
-  Local<FunctionTemplate> t =
-      env->NewFunctionTemplate(LazilyInitializedJSTemplateConstructor);
+  Local<FunctionTemplate> t = NewFunctionTemplate(
+      env->isolate(), LazilyInitializedJSTemplateConstructor);
   t->Inherit(BaseObject::GetConstructorTemplate(env));
   t->InstanceTemplate()->SetInternalFieldCount(BaseObject::kInternalFieldCount);
   return t;
@@ -2241,7 +2100,7 @@ bool BaseObject::IsRootNode() const {
 Local<FunctionTemplate> BaseObject::GetConstructorTemplate(Environment* env) {
   Local<FunctionTemplate> tmpl = env->base_object_ctor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = env->NewFunctionTemplate(nullptr);
+    tmpl = NewFunctionTemplate(env->isolate(), nullptr);
     tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "BaseObject"));
     env->set_base_object_ctor_template(tmpl);
   }
diff --git a/src/env.h b/src/env.h
index 7b0210f92f6640..cedaacd2d482c7 100644
--- a/src/env.h
+++ b/src/env.h
@@ -1237,56 +1237,6 @@ class Environment : public MemoryRetainer {
                                const char* path = nullptr,
                                const char* dest = nullptr);
 
-  v8::Local<v8::FunctionTemplate> NewFunctionTemplate(
-      v8::FunctionCallback callback,
-      v8::Local<v8::Signature> signature = v8::Local<v8::Signature>(),
-      v8::ConstructorBehavior behavior = v8::ConstructorBehavior::kAllow,
-      v8::SideEffectType side_effect = v8::SideEffectType::kHasSideEffect,
-      const v8::CFunction* c_function = nullptr);
-
-  // Convenience methods for NewFunctionTemplate().
-  void SetMethod(v8::Local<v8::Object> that,
-                 const char* name,
-                 v8::FunctionCallback callback);
-
-  void SetFastMethod(v8::Local<v8::Object> that,
-                     const char* name,
-                     v8::FunctionCallback slow_callback,
-                     const v8::CFunction* c_function);
-
-  void SetProtoMethod(v8::Local<v8::FunctionTemplate> that,
-                      const char* name,
-                      v8::FunctionCallback callback);
-
-  void SetInstanceMethod(v8::Local<v8::FunctionTemplate> that,
-                         const char* name,
-                         v8::FunctionCallback callback);
-
-  // Safe variants denote the function has no side effects.
-  void SetMethodNoSideEffect(v8::Local<v8::Object> that,
-                             const char* name,
-                             v8::FunctionCallback callback);
-  void SetProtoMethodNoSideEffect(v8::Local<v8::FunctionTemplate> that,
-                                  const char* name,
-                                  v8::FunctionCallback callback);
-
-  enum class SetConstructorFunctionFlag {
-    NONE,
-    SET_CLASS_NAME,
-  };
-
-  void SetConstructorFunction(v8::Local<v8::Object> that,
-                              const char* name,
-                              v8::Local<v8::FunctionTemplate> tmpl,
-                              SetConstructorFunctionFlag flag =
-                                  SetConstructorFunctionFlag::SET_CLASS_NAME);
-
-  void SetConstructorFunction(v8::Local<v8::Object> that,
-                              v8::Local<v8::String> name,
-                              v8::Local<v8::FunctionTemplate> tmpl,
-                              SetConstructorFunctionFlag flag =
-                                  SetConstructorFunctionFlag::SET_CLASS_NAME);
-
   void AtExit(void (*cb)(void* arg), void* arg);
   void RunAtExitCallbacks();
 
diff --git a/src/fs_event_wrap.cc b/src/fs_event_wrap.cc
index f13d22535c1015..7b4a3278028a96 100644
--- a/src/fs_event_wrap.cc
+++ b/src/fs_event_wrap.cc
@@ -35,6 +35,7 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::MaybeLocal;
 using v8::Object;
@@ -95,13 +96,14 @@ void FSEventWrap::Initialize(Local<Object> target,
                              Local<Context> context,
                              void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->InstanceTemplate()->SetInternalFieldCount(
       FSEventWrap::kInternalFieldCount);
 
   t->Inherit(HandleWrap::GetConstructorTemplate(env));
-  env->SetProtoMethod(t, "start", Start);
+  SetProtoMethod(isolate, t, "start", Start);
 
   Local<FunctionTemplate> get_initialized_templ =
       FunctionTemplate::New(env->isolate(),
@@ -115,7 +117,7 @@ void FSEventWrap::Initialize(Local<Object> target,
       Local<FunctionTemplate>(),
       static_cast<PropertyAttribute>(ReadOnly | DontDelete | DontEnum));
 
-  env->SetConstructorFunction(target, "FSEvent", t);
+  SetConstructorFunction(context, target, "FSEvent", t);
 }
 
 void FSEventWrap::RegisterExternalReferences(
diff --git a/src/handle_wrap.cc b/src/handle_wrap.cc
index caad0e0554622a..4ea6a67d57f8e2 100644
--- a/src/handle_wrap.cc
+++ b/src/handle_wrap.cc
@@ -31,6 +31,7 @@ using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::Value;
@@ -157,13 +158,14 @@ void HandleWrap::OnClose(uv_handle_t* handle) {
 Local<FunctionTemplate> HandleWrap::GetConstructorTemplate(Environment* env) {
   Local<FunctionTemplate> tmpl = env->handle_wrap_ctor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = env->NewFunctionTemplate(nullptr);
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, nullptr);
     tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "HandleWrap"));
     tmpl->Inherit(AsyncWrap::GetConstructorTemplate(env));
-    env->SetProtoMethod(tmpl, "close", HandleWrap::Close);
-    env->SetProtoMethodNoSideEffect(tmpl, "hasRef", HandleWrap::HasRef);
-    env->SetProtoMethod(tmpl, "ref", HandleWrap::Ref);
-    env->SetProtoMethod(tmpl, "unref", HandleWrap::Unref);
+    SetProtoMethod(isolate, tmpl, "close", HandleWrap::Close);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "hasRef", HandleWrap::HasRef);
+    SetProtoMethod(isolate, tmpl, "ref", HandleWrap::Ref);
+    SetProtoMethod(isolate, tmpl, "unref", HandleWrap::Unref);
     env->set_handle_wrap_ctor_template(tmpl);
   }
   return tmpl;
diff --git a/src/heap_utils.cc b/src/heap_utils.cc
index bc779489637048..a7c5dcdfb89e82 100644
--- a/src/heap_utils.cc
+++ b/src/heap_utils.cc
@@ -393,11 +393,10 @@ void Initialize(Local<Object> target,
                 Local<Value> unused,
                 Local<Context> context,
                 void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-
-  env->SetMethod(target, "buildEmbedderGraph", BuildEmbedderGraph);
-  env->SetMethod(target, "triggerHeapSnapshot", TriggerHeapSnapshot);
-  env->SetMethod(target, "createHeapSnapshotStream", CreateHeapSnapshotStream);
+  SetMethod(context, target, "buildEmbedderGraph", BuildEmbedderGraph);
+  SetMethod(context, target, "triggerHeapSnapshot", TriggerHeapSnapshot);
+  SetMethod(
+      context, target, "createHeapSnapshotStream", CreateHeapSnapshotStream);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/histogram.cc b/src/histogram.cc
index 63fa52a57df157..3a3228ddc9eb6b 100644
--- a/src/histogram.cc
+++ b/src/histogram.cc
@@ -11,6 +11,7 @@ using v8::BigInt;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::Map;
 using v8::Number;
@@ -280,7 +281,8 @@ Local<FunctionTemplate> HistogramBase::GetConstructorTemplate(
     Environment* env) {
   Local<FunctionTemplate> tmpl = env->histogram_ctor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = env->NewFunctionTemplate(New);
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, New);
     Local<String> classname =
         FIXED_ONE_BYTE_STRING(env->isolate(), "Histogram");
     tmpl->SetClassName(classname);
@@ -288,26 +290,27 @@ Local<FunctionTemplate> HistogramBase::GetConstructorTemplate(
 
     tmpl->InstanceTemplate()->SetInternalFieldCount(
         HistogramBase::kInternalFieldCount);
-    env->SetProtoMethodNoSideEffect(tmpl, "count", GetCount);
-    env->SetProtoMethodNoSideEffect(tmpl, "countBigInt", GetCountBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "exceeds", GetExceeds);
-    env->SetProtoMethodNoSideEffect(tmpl, "exceedsBigInt", GetExceedsBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "min", GetMin);
-    env->SetProtoMethodNoSideEffect(tmpl, "minBigInt", GetMinBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "max", GetMax);
-    env->SetProtoMethodNoSideEffect(tmpl, "maxBigInt", GetMaxBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "mean", GetMean);
-    env->SetProtoMethodNoSideEffect(tmpl, "stddev", GetStddev);
-    env->SetProtoMethodNoSideEffect(tmpl, "percentile", GetPercentile);
-    env->SetProtoMethodNoSideEffect(tmpl, "percentileBigInt",
-                                    GetPercentileBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "percentiles", GetPercentiles);
-    env->SetProtoMethodNoSideEffect(tmpl, "percentilesBigInt",
-                                    GetPercentilesBigInt);
-    env->SetProtoMethod(tmpl, "reset", DoReset);
-    env->SetProtoMethod(tmpl, "record", Record);
-    env->SetProtoMethod(tmpl, "recordDelta", RecordDelta);
-    env->SetProtoMethod(tmpl, "add", Add);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "count", GetCount);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "countBigInt", GetCountBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "exceeds", GetExceeds);
+    SetProtoMethodNoSideEffect(
+        isolate, tmpl, "exceedsBigInt", GetExceedsBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "min", GetMin);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "minBigInt", GetMinBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "max", GetMax);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "maxBigInt", GetMaxBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "mean", GetMean);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "stddev", GetStddev);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "percentile", GetPercentile);
+    SetProtoMethodNoSideEffect(
+        isolate, tmpl, "percentileBigInt", GetPercentileBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "percentiles", GetPercentiles);
+    SetProtoMethodNoSideEffect(
+        isolate, tmpl, "percentilesBigInt", GetPercentilesBigInt);
+    SetProtoMethod(isolate, tmpl, "reset", DoReset);
+    SetProtoMethod(isolate, tmpl, "record", Record);
+    SetProtoMethod(isolate, tmpl, "recordDelta", RecordDelta);
+    SetProtoMethod(isolate, tmpl, "add", Add);
     env->set_histogram_ctor_template(tmpl);
   }
   return tmpl;
@@ -337,7 +340,8 @@ void HistogramBase::RegisterExternalReferences(
 }
 
 void HistogramBase::Initialize(Environment* env, Local<Object> target) {
-  env->SetConstructorFunction(target, "Histogram", GetConstructorTemplate(env));
+  SetConstructorFunction(
+      env->context(), target, "Histogram", GetConstructorTemplate(env));
 }
 
 BaseObjectPtr<BaseObject> HistogramBase::HistogramTransferData::Deserialize(
@@ -360,29 +364,31 @@ Local<FunctionTemplate> IntervalHistogram::GetConstructorTemplate(
     Environment* env) {
   Local<FunctionTemplate> tmpl = env->intervalhistogram_constructor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = FunctionTemplate::New(env->isolate());
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, nullptr);
     tmpl->Inherit(HandleWrap::GetConstructorTemplate(env));
     tmpl->InstanceTemplate()->SetInternalFieldCount(
         HistogramBase::kInternalFieldCount);
-    env->SetProtoMethodNoSideEffect(tmpl, "count", GetCount);
-    env->SetProtoMethodNoSideEffect(tmpl, "countBigInt", GetCountBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "exceeds", GetExceeds);
-    env->SetProtoMethodNoSideEffect(tmpl, "exceedsBigInt", GetExceedsBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "min", GetMin);
-    env->SetProtoMethodNoSideEffect(tmpl, "minBigInt", GetMinBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "max", GetMax);
-    env->SetProtoMethodNoSideEffect(tmpl, "maxBigInt", GetMaxBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "mean", GetMean);
-    env->SetProtoMethodNoSideEffect(tmpl, "stddev", GetStddev);
-    env->SetProtoMethodNoSideEffect(tmpl, "percentile", GetPercentile);
-    env->SetProtoMethodNoSideEffect(tmpl, "percentileBigInt",
-                                    GetPercentileBigInt);
-    env->SetProtoMethodNoSideEffect(tmpl, "percentiles", GetPercentiles);
-    env->SetProtoMethodNoSideEffect(tmpl, "percentilesBigInt",
-                                    GetPercentilesBigInt);
-    env->SetProtoMethod(tmpl, "reset", DoReset);
-    env->SetProtoMethod(tmpl, "start", Start);
-    env->SetProtoMethod(tmpl, "stop", Stop);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "count", GetCount);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "countBigInt", GetCountBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "exceeds", GetExceeds);
+    SetProtoMethodNoSideEffect(
+        isolate, tmpl, "exceedsBigInt", GetExceedsBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "min", GetMin);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "minBigInt", GetMinBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "max", GetMax);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "maxBigInt", GetMaxBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "mean", GetMean);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "stddev", GetStddev);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "percentile", GetPercentile);
+    SetProtoMethodNoSideEffect(
+        isolate, tmpl, "percentileBigInt", GetPercentileBigInt);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "percentiles", GetPercentiles);
+    SetProtoMethodNoSideEffect(
+        isolate, tmpl, "percentilesBigInt", GetPercentilesBigInt);
+    SetProtoMethod(isolate, tmpl, "reset", DoReset);
+    SetProtoMethod(isolate, tmpl, "start", Start);
+    SetProtoMethod(isolate, tmpl, "stop", Stop);
     env->set_intervalhistogram_constructor_template(tmpl);
   }
   return tmpl;
diff --git a/src/inspector_js_api.cc b/src/inspector_js_api.cc
index 4ebb8acd689d58..c50646954d0987 100644
--- a/src/inspector_js_api.cc
+++ b/src/inspector_js_api.cc
@@ -102,17 +102,17 @@ class JSBindingsConnection : public AsyncWrap {
   }
 
   static void Bind(Environment* env, Local<Object> target) {
+    Isolate* isolate = env->isolate();
     Local<FunctionTemplate> tmpl =
-        env->NewFunctionTemplate(JSBindingsConnection::New);
+        NewFunctionTemplate(isolate, JSBindingsConnection::New);
     tmpl->InstanceTemplate()->SetInternalFieldCount(
         JSBindingsConnection::kInternalFieldCount);
     tmpl->Inherit(AsyncWrap::GetConstructorTemplate(env));
-    env->SetProtoMethod(tmpl, "dispatch", JSBindingsConnection::Dispatch);
-    env->SetProtoMethod(tmpl, "disconnect", JSBindingsConnection::Disconnect);
-    env->SetConstructorFunction(
-        target,
-        ConnectionType::GetClassName(env),
-        tmpl);
+    SetProtoMethod(isolate, tmpl, "dispatch", JSBindingsConnection::Dispatch);
+    SetProtoMethod(
+        isolate, tmpl, "disconnect", JSBindingsConnection::Disconnect);
+    SetConstructorFunction(
+        env->context(), target, ConnectionType::GetClassName(env), tmpl);
   }
 
   static void New(const FunctionCallbackInfo<Value>& info) {
@@ -314,34 +314,45 @@ void Url(const FunctionCallbackInfo<Value>& args) {
 void Initialize(Local<Object> target, Local<Value> unused,
                 Local<Context> context, void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
   v8::Local<v8::Function> consoleCallFunc =
-      env->NewFunctionTemplate(InspectorConsoleCall, v8::Local<v8::Signature>(),
-                               v8::ConstructorBehavior::kThrow,
-                               v8::SideEffectType::kHasSideEffect)
+      NewFunctionTemplate(isolate,
+                          InspectorConsoleCall,
+                          v8::Local<v8::Signature>(),
+                          v8::ConstructorBehavior::kThrow,
+                          v8::SideEffectType::kHasSideEffect)
           ->GetFunction(context)
           .ToLocalChecked();
-  auto name_string = FIXED_ONE_BYTE_STRING(env->isolate(), "consoleCall");
+  auto name_string = FIXED_ONE_BYTE_STRING(isolate, "consoleCall");
   target->Set(context, name_string, consoleCallFunc).Check();
   consoleCallFunc->SetName(name_string);
 
-  env->SetMethod(
-      target, "setConsoleExtensionInstaller", SetConsoleExtensionInstaller);
-  env->SetMethod(target, "callAndPauseOnStart", CallAndPauseOnStart);
-  env->SetMethod(target, "open", Open);
-  env->SetMethodNoSideEffect(target, "url", Url);
-  env->SetMethod(target, "waitForDebugger", WaitForDebugger);
-
-  env->SetMethod(target, "asyncTaskScheduled", AsyncTaskScheduledWrapper);
-  env->SetMethod(target, "asyncTaskCanceled",
-      InvokeAsyncTaskFnWithId<&Agent::AsyncTaskCanceled>);
-  env->SetMethod(target, "asyncTaskStarted",
-      InvokeAsyncTaskFnWithId<&Agent::AsyncTaskStarted>);
-  env->SetMethod(target, "asyncTaskFinished",
-      InvokeAsyncTaskFnWithId<&Agent::AsyncTaskFinished>);
-
-  env->SetMethod(target, "registerAsyncHook", RegisterAsyncHookWrapper);
-  env->SetMethodNoSideEffect(target, "isEnabled", IsEnabled);
+  SetMethod(context,
+            target,
+            "setConsoleExtensionInstaller",
+            SetConsoleExtensionInstaller);
+  SetMethod(context, target, "callAndPauseOnStart", CallAndPauseOnStart);
+  SetMethod(context, target, "open", Open);
+  SetMethodNoSideEffect(context, target, "url", Url);
+  SetMethod(context, target, "waitForDebugger", WaitForDebugger);
+
+  SetMethod(context, target, "asyncTaskScheduled", AsyncTaskScheduledWrapper);
+  SetMethod(context,
+            target,
+            "asyncTaskCanceled",
+            InvokeAsyncTaskFnWithId<&Agent::AsyncTaskCanceled>);
+  SetMethod(context,
+            target,
+            "asyncTaskStarted",
+            InvokeAsyncTaskFnWithId<&Agent::AsyncTaskStarted>);
+  SetMethod(context,
+            target,
+            "asyncTaskFinished",
+            InvokeAsyncTaskFnWithId<&Agent::AsyncTaskFinished>);
+
+  SetMethod(context, target, "registerAsyncHook", RegisterAsyncHookWrapper);
+  SetMethodNoSideEffect(context, target, "isEnabled", IsEnabled);
 
   JSBindingsConnection<LocalConnection>::Bind(env, target);
   JSBindingsConnection<MainThreadConnection>::Bind(env, target);
diff --git a/src/inspector_profiler.cc b/src/inspector_profiler.cc
index 332aa536364fba..538125f091a323 100644
--- a/src/inspector_profiler.cc
+++ b/src/inspector_profiler.cc
@@ -507,11 +507,11 @@ static void Initialize(Local<Object> target,
                        Local<Value> unused,
                        Local<Context> context,
                        void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-  env->SetMethod(target, "setCoverageDirectory", SetCoverageDirectory);
-  env->SetMethod(target, "setSourceMapCacheGetter", SetSourceMapCacheGetter);
-  env->SetMethod(target, "takeCoverage", TakeCoverage);
-  env->SetMethod(target, "stopCoverage", StopCoverage);
+  SetMethod(context, target, "setCoverageDirectory", SetCoverageDirectory);
+  SetMethod(
+      context, target, "setSourceMapCacheGetter", SetSourceMapCacheGetter);
+  SetMethod(context, target, "takeCoverage", TakeCoverage);
+  SetMethod(context, target, "stopCoverage", StopCoverage);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/js_stream.cc b/src/js_stream.cc
index 720008ecefcb48..5bf64a9e0a928b 100644
--- a/src/js_stream.cc
+++ b/src/js_stream.cc
@@ -17,6 +17,7 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::Value;
@@ -197,19 +198,20 @@ void JSStream::Initialize(Local<Object> target,
                           Local<Context> context,
                           void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->InstanceTemplate()
     ->SetInternalFieldCount(StreamBase::kInternalFieldCount);
   t->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "finishWrite", Finish<WriteWrap>);
-  env->SetProtoMethod(t, "finishShutdown", Finish<ShutdownWrap>);
-  env->SetProtoMethod(t, "readBuffer", ReadBuffer);
-  env->SetProtoMethod(t, "emitEOF", EmitEOF);
+  SetProtoMethod(isolate, t, "finishWrite", Finish<WriteWrap>);
+  SetProtoMethod(isolate, t, "finishShutdown", Finish<ShutdownWrap>);
+  SetProtoMethod(isolate, t, "readBuffer", ReadBuffer);
+  SetProtoMethod(isolate, t, "emitEOF", EmitEOF);
 
   StreamBase::AddMethods(env, t);
-  env->SetConstructorFunction(target, "JSStream", t);
+  SetConstructorFunction(context, target, "JSStream", t);
 }
 
 }  // namespace node
diff --git a/src/js_udp_wrap.cc b/src/js_udp_wrap.cc
index 3f02771ee1a907..99362ccc6097d5 100644
--- a/src/js_udp_wrap.cc
+++ b/src/js_udp_wrap.cc
@@ -17,6 +17,7 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::Value;
@@ -198,18 +199,19 @@ void JSUDPWrap::Initialize(Local<Object> target,
                            Local<Context> context,
                            void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->InstanceTemplate()
     ->SetInternalFieldCount(UDPWrapBase::kUDPWrapBaseField + 1);
   t->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
   UDPWrapBase::AddMethods(env, t);
-  env->SetProtoMethod(t, "emitReceived", EmitReceived);
-  env->SetProtoMethod(t, "onSendDone", OnSendDone);
-  env->SetProtoMethod(t, "onAfterBind", OnAfterBind);
+  SetProtoMethod(isolate, t, "emitReceived", EmitReceived);
+  SetProtoMethod(isolate, t, "onSendDone", OnSendDone);
+  SetProtoMethod(isolate, t, "onAfterBind", OnAfterBind);
 
-  env->SetConstructorFunction(target, "JSUDPWrap", t);
+  SetConstructorFunction(context, target, "JSUDPWrap", t);
 }
 
 
diff --git a/src/module_wrap.cc b/src/module_wrap.cc
index b4b70ec1afd3ea..bd13d1e2825ff0 100644
--- a/src/module_wrap.cc
+++ b/src/module_wrap.cc
@@ -765,31 +765,37 @@ void ModuleWrap::Initialize(Local<Object> target,
                             Local<Context> context,
                             void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  Local<FunctionTemplate> tpl = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> tpl = NewFunctionTemplate(isolate, New);
   tpl->InstanceTemplate()->SetInternalFieldCount(
       ModuleWrap::kInternalFieldCount);
   tpl->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(tpl, "link", Link);
-  env->SetProtoMethod(tpl, "instantiate", Instantiate);
-  env->SetProtoMethod(tpl, "evaluate", Evaluate);
-  env->SetProtoMethod(tpl, "setExport", SetSyntheticExport);
-  env->SetProtoMethodNoSideEffect(tpl, "createCachedData", CreateCachedData);
-  env->SetProtoMethodNoSideEffect(tpl, "getNamespace", GetNamespace);
-  env->SetProtoMethodNoSideEffect(tpl, "getStatus", GetStatus);
-  env->SetProtoMethodNoSideEffect(tpl, "getError", GetError);
-  env->SetProtoMethodNoSideEffect(tpl, "getStaticDependencySpecifiers",
-                                  GetStaticDependencySpecifiers);
-
-  env->SetConstructorFunction(target, "ModuleWrap", tpl);
-
-  env->SetMethod(target,
-                 "setImportModuleDynamicallyCallback",
-                 SetImportModuleDynamicallyCallback);
-  env->SetMethod(target,
-                 "setInitializeImportMetaObjectCallback",
-                 SetInitializeImportMetaObjectCallback);
+  SetProtoMethod(isolate, tpl, "link", Link);
+  SetProtoMethod(isolate, tpl, "instantiate", Instantiate);
+  SetProtoMethod(isolate, tpl, "evaluate", Evaluate);
+  SetProtoMethod(isolate, tpl, "setExport", SetSyntheticExport);
+  SetProtoMethodNoSideEffect(
+      isolate, tpl, "createCachedData", CreateCachedData);
+  SetProtoMethodNoSideEffect(isolate, tpl, "getNamespace", GetNamespace);
+  SetProtoMethodNoSideEffect(isolate, tpl, "getStatus", GetStatus);
+  SetProtoMethodNoSideEffect(isolate, tpl, "getError", GetError);
+  SetProtoMethodNoSideEffect(isolate,
+                             tpl,
+                             "getStaticDependencySpecifiers",
+                             GetStaticDependencySpecifiers);
+
+  SetConstructorFunction(context, target, "ModuleWrap", tpl);
+
+  SetMethod(context,
+            target,
+            "setImportModuleDynamicallyCallback",
+            SetImportModuleDynamicallyCallback);
+  SetMethod(context,
+            target,
+            "setInitializeImportMetaObjectCallback",
+            SetInitializeImportMetaObjectCallback);
 
 #define V(name)                                                                \
     target->Set(context,                                                       \
diff --git a/src/node.cc b/src/node.cc
index 5ac6ca75389d19..ca0735e775eaa2 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -312,10 +312,10 @@ MaybeLocal<Value> Environment::BootstrapInternalLoaders() {
       primordials_string()};
   std::vector<Local<Value>> loaders_args = {
       process_object(),
-      NewFunctionTemplate(binding::GetLinkedBinding)
+      NewFunctionTemplate(isolate_, binding::GetLinkedBinding)
           ->GetFunction(context())
           .ToLocalChecked(),
-      NewFunctionTemplate(binding::GetInternalBinding)
+      NewFunctionTemplate(isolate_, binding::GetInternalBinding)
           ->GetFunction(context())
           .ToLocalChecked(),
       primordials()};
@@ -445,7 +445,7 @@ MaybeLocal<Value> StartExecution(Environment* env, const char* main_script_id) {
       env->native_module_require(),
       env->internal_binding_loader(),
       env->primordials(),
-      env->NewFunctionTemplate(MarkBootstrapComplete)
+      NewFunctionTemplate(env->isolate(), MarkBootstrapComplete)
           ->GetFunction(env->context())
           .ToLocalChecked()};
 
diff --git a/src/node_blob.cc b/src/node_blob.cc
index ee61437f402fcd..ffc3de1453add6 100644
--- a/src/node_blob.cc
+++ b/src/node_blob.cc
@@ -22,6 +22,7 @@ using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
+using v8::Isolate;
 using v8::Local;
 using v8::MaybeLocal;
 using v8::Number;
@@ -42,24 +43,25 @@ void Blob::Initialize(
       env->AddBindingData<BlobBindingData>(context, target);
   if (binding_data == nullptr) return;
 
-  env->SetMethod(target, "createBlob", New);
-  env->SetMethod(target, "storeDataObject", StoreDataObject);
-  env->SetMethod(target, "getDataObject", GetDataObject);
-  env->SetMethod(target, "revokeDataObject", RevokeDataObject);
+  SetMethod(context, target, "createBlob", New);
+  SetMethod(context, target, "storeDataObject", StoreDataObject);
+  SetMethod(context, target, "getDataObject", GetDataObject);
+  SetMethod(context, target, "revokeDataObject", RevokeDataObject);
   FixedSizeBlobCopyJob::Initialize(env, target);
 }
 
 Local<FunctionTemplate> Blob::GetConstructorTemplate(Environment* env) {
   Local<FunctionTemplate> tmpl = env->blob_constructor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = FunctionTemplate::New(env->isolate());
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, nullptr);
     tmpl->InstanceTemplate()->SetInternalFieldCount(
         BaseObject::kInternalFieldCount);
     tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
     tmpl->SetClassName(
         FIXED_ONE_BYTE_STRING(env->isolate(), "Blob"));
-    env->SetProtoMethod(tmpl, "toArrayBuffer", ToArrayBuffer);
-    env->SetProtoMethod(tmpl, "slice", ToSlice);
+    SetProtoMethod(isolate, tmpl, "toArrayBuffer", ToArrayBuffer);
+    SetProtoMethod(isolate, tmpl, "slice", ToSlice);
     env->set_blob_constructor_template(tmpl);
   }
   return tmpl;
@@ -362,12 +364,13 @@ void FixedSizeBlobCopyJob::MemoryInfo(MemoryTracker* tracker) const {
 }
 
 void FixedSizeBlobCopyJob::Initialize(Environment* env, Local<Object> target) {
-  v8::Local<v8::FunctionTemplate> job = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  v8::Local<v8::FunctionTemplate> job = NewFunctionTemplate(isolate, New);
   job->Inherit(AsyncWrap::GetConstructorTemplate(env));
   job->InstanceTemplate()->SetInternalFieldCount(
       AsyncWrap::kInternalFieldCount);
-  env->SetProtoMethod(job, "run", Run);
-  env->SetConstructorFunction(target, "FixedSizeBlobCopyJob", job);
+  SetProtoMethod(isolate, job, "run", Run);
+  SetConstructorFunction(env->context(), target, "FixedSizeBlobCopyJob", job);
 }
 
 void FixedSizeBlobCopyJob::New(const FunctionCallbackInfo<Value>& args) {
diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index b2b3cfd9c8faa1..9094fd121e5010 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -1267,54 +1267,60 @@ void Initialize(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  env->SetMethod(target, "setBufferPrototype", SetBufferPrototype);
-  env->SetMethodNoSideEffect(target, "createFromString", CreateFromString);
-
-  env->SetMethodNoSideEffect(target, "byteLengthUtf8", ByteLengthUtf8);
-  env->SetMethod(target, "copy", Copy);
-  env->SetMethodNoSideEffect(target, "compare", Compare);
-  env->SetMethodNoSideEffect(target, "compareOffset", CompareOffset);
-  env->SetMethod(target, "fill", Fill);
-  env->SetMethodNoSideEffect(target, "indexOfBuffer", IndexOfBuffer);
-  env->SetMethodNoSideEffect(target, "indexOfNumber", IndexOfNumber);
-  env->SetMethodNoSideEffect(target, "indexOfString", IndexOfString);
-
-  env->SetMethod(target, "detachArrayBuffer", DetachArrayBuffer);
-  env->SetMethod(target, "copyArrayBuffer", CopyArrayBuffer);
-
-  env->SetMethod(target, "swap16", Swap16);
-  env->SetMethod(target, "swap32", Swap32);
-  env->SetMethod(target, "swap64", Swap64);
-
-  env->SetMethod(target, "encodeInto", EncodeInto);
-  env->SetMethodNoSideEffect(target, "encodeUtf8String", EncodeUtf8String);
-
-  target->Set(env->context(),
-              FIXED_ONE_BYTE_STRING(env->isolate(), "kMaxLength"),
-              Number::New(env->isolate(), kMaxLength)).Check();
-
-  target->Set(env->context(),
-              FIXED_ONE_BYTE_STRING(env->isolate(), "kStringMaxLength"),
-              Integer::New(env->isolate(), String::kMaxLength)).Check();
-
-  env->SetMethodNoSideEffect(target, "asciiSlice", StringSlice<ASCII>);
-  env->SetMethodNoSideEffect(target, "base64Slice", StringSlice<BASE64>);
-  env->SetMethodNoSideEffect(target, "base64urlSlice", StringSlice<BASE64URL>);
-  env->SetMethodNoSideEffect(target, "latin1Slice", StringSlice<LATIN1>);
-  env->SetMethodNoSideEffect(target, "hexSlice", StringSlice<HEX>);
-  env->SetMethodNoSideEffect(target, "ucs2Slice", StringSlice<UCS2>);
-  env->SetMethodNoSideEffect(target, "utf8Slice", StringSlice<UTF8>);
-
-  env->SetMethod(target, "asciiWrite", StringWrite<ASCII>);
-  env->SetMethod(target, "base64Write", StringWrite<BASE64>);
-  env->SetMethod(target, "base64urlWrite", StringWrite<BASE64URL>);
-  env->SetMethod(target, "latin1Write", StringWrite<LATIN1>);
-  env->SetMethod(target, "hexWrite", StringWrite<HEX>);
-  env->SetMethod(target, "ucs2Write", StringWrite<UCS2>);
-  env->SetMethod(target, "utf8Write", StringWrite<UTF8>);
-
-  env->SetMethod(target, "getZeroFillToggle", GetZeroFillToggle);
+  SetMethod(context, target, "setBufferPrototype", SetBufferPrototype);
+  SetMethodNoSideEffect(context, target, "createFromString", CreateFromString);
+
+  SetMethodNoSideEffect(context, target, "byteLengthUtf8", ByteLengthUtf8);
+  SetMethod(context, target, "copy", Copy);
+  SetMethodNoSideEffect(context, target, "compare", Compare);
+  SetMethodNoSideEffect(context, target, "compareOffset", CompareOffset);
+  SetMethod(context, target, "fill", Fill);
+  SetMethodNoSideEffect(context, target, "indexOfBuffer", IndexOfBuffer);
+  SetMethodNoSideEffect(context, target, "indexOfNumber", IndexOfNumber);
+  SetMethodNoSideEffect(context, target, "indexOfString", IndexOfString);
+
+  SetMethod(context, target, "detachArrayBuffer", DetachArrayBuffer);
+  SetMethod(context, target, "copyArrayBuffer", CopyArrayBuffer);
+
+  SetMethod(context, target, "swap16", Swap16);
+  SetMethod(context, target, "swap32", Swap32);
+  SetMethod(context, target, "swap64", Swap64);
+
+  SetMethod(context, target, "encodeInto", EncodeInto);
+  SetMethodNoSideEffect(context, target, "encodeUtf8String", EncodeUtf8String);
+
+  target
+      ->Set(context,
+            FIXED_ONE_BYTE_STRING(isolate, "kMaxLength"),
+            Number::New(isolate, kMaxLength))
+      .Check();
+
+  target
+      ->Set(context,
+            FIXED_ONE_BYTE_STRING(isolate, "kStringMaxLength"),
+            Integer::New(isolate, String::kMaxLength))
+      .Check();
+
+  SetMethodNoSideEffect(context, target, "asciiSlice", StringSlice<ASCII>);
+  SetMethodNoSideEffect(context, target, "base64Slice", StringSlice<BASE64>);
+  SetMethodNoSideEffect(
+      context, target, "base64urlSlice", StringSlice<BASE64URL>);
+  SetMethodNoSideEffect(context, target, "latin1Slice", StringSlice<LATIN1>);
+  SetMethodNoSideEffect(context, target, "hexSlice", StringSlice<HEX>);
+  SetMethodNoSideEffect(context, target, "ucs2Slice", StringSlice<UCS2>);
+  SetMethodNoSideEffect(context, target, "utf8Slice", StringSlice<UTF8>);
+
+  SetMethod(context, target, "asciiWrite", StringWrite<ASCII>);
+  SetMethod(context, target, "base64Write", StringWrite<BASE64>);
+  SetMethod(context, target, "base64urlWrite", StringWrite<BASE64URL>);
+  SetMethod(context, target, "latin1Write", StringWrite<LATIN1>);
+  SetMethod(context, target, "hexWrite", StringWrite<HEX>);
+  SetMethod(context, target, "ucs2Write", StringWrite<UCS2>);
+  SetMethod(context, target, "utf8Write", StringWrite<UTF8>);
+
+  SetMethod(context, target, "getZeroFillToggle", GetZeroFillToggle);
 }
 
 }  // anonymous namespace
diff --git a/src/node_contextify.cc b/src/node_contextify.cc
index ae1b9f98e7b537..a02c211db8d6c2 100644
--- a/src/node_contextify.cc
+++ b/src/node_contextify.cc
@@ -255,16 +255,19 @@ MaybeLocal<Context> ContextifyContext::CreateV8Context(
 
 
 void ContextifyContext::Init(Environment* env, Local<Object> target) {
+  Isolate* isolate = env->isolate();
+  Local<Context> context = env->context();
+
   Local<FunctionTemplate> function_template =
-      FunctionTemplate::New(env->isolate());
+      NewFunctionTemplate(isolate, nullptr);
   function_template->InstanceTemplate()->SetInternalFieldCount(
       ContextifyContext::kInternalFieldCount);
   env->set_script_data_constructor_function(
       function_template->GetFunction(env->context()).ToLocalChecked());
 
-  env->SetMethod(target, "makeContext", MakeContext);
-  env->SetMethod(target, "isContext", IsContext);
-  env->SetMethod(target, "compileFunction", CompileFunction);
+  SetMethod(context, target, "makeContext", MakeContext);
+  SetMethod(context, target, "isContext", IsContext);
+  SetMethod(context, target, "compileFunction", CompileFunction);
 }
 
 void ContextifyContext::RegisterExternalReferences(
@@ -665,16 +668,17 @@ void ContextifyContext::IndexedPropertyDeleterCallback(
 }
 
 void ContextifyScript::Init(Environment* env, Local<Object> target) {
+  Isolate* isolate = env->isolate();
   HandleScope scope(env->isolate());
   Local<String> class_name =
       FIXED_ONE_BYTE_STRING(env->isolate(), "ContextifyScript");
 
-  Local<FunctionTemplate> script_tmpl = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> script_tmpl = NewFunctionTemplate(isolate, New);
   script_tmpl->InstanceTemplate()->SetInternalFieldCount(
       ContextifyScript::kInternalFieldCount);
   script_tmpl->SetClassName(class_name);
-  env->SetProtoMethod(script_tmpl, "createCachedData", CreateCachedData);
-  env->SetProtoMethod(script_tmpl, "runInContext", RunInContext);
+  SetProtoMethod(isolate, script_tmpl, "createCachedData", CreateCachedData);
+  SetProtoMethod(isolate, script_tmpl, "runInContext", RunInContext);
 
   Local<Context> context = env->context();
 
@@ -1270,12 +1274,14 @@ void MicrotaskQueueWrap::New(const FunctionCallbackInfo<Value>& args) {
 }
 
 void MicrotaskQueueWrap::Init(Environment* env, Local<Object> target) {
-  HandleScope scope(env->isolate());
-  Local<FunctionTemplate> tmpl = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  HandleScope scope(isolate);
+  Local<Context> context = env->context();
+  Local<FunctionTemplate> tmpl = NewFunctionTemplate(isolate, New);
   tmpl->InstanceTemplate()->SetInternalFieldCount(
       ContextifyScript::kInternalFieldCount);
   env->set_microtask_queue_ctor_template(tmpl);
-  env->SetConstructorFunction(target, "MicrotaskQueue", tmpl);
+  SetConstructorFunction(context, target, "MicrotaskQueue", tmpl);
 }
 
 void MicrotaskQueueWrap::RegisterExternalReferences(
@@ -1293,11 +1299,11 @@ void Initialize(Local<Object> target,
   ContextifyScript::Init(env, target);
   MicrotaskQueueWrap::Init(env, target);
 
-  env->SetMethod(target, "startSigintWatchdog", StartSigintWatchdog);
-  env->SetMethod(target, "stopSigintWatchdog", StopSigintWatchdog);
+  SetMethod(context, target, "startSigintWatchdog", StartSigintWatchdog);
+  SetMethod(context, target, "stopSigintWatchdog", StopSigintWatchdog);
   // Used in tests.
-  env->SetMethodNoSideEffect(
-      target, "watchdogHasPendingSigint", WatchdogHasPendingSigint);
+  SetMethodNoSideEffect(
+      context, target, "watchdogHasPendingSigint", WatchdogHasPendingSigint);
 
   {
     Local<FunctionTemplate> tpl = FunctionTemplate::New(env->isolate());
@@ -1333,7 +1339,7 @@ void Initialize(Local<Object> target,
 
   target->Set(context, env->constants_string(), constants).Check();
 
-  env->SetMethod(target, "measureMemory", MeasureMemory);
+  SetMethod(context, target, "measureMemory", MeasureMemory);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/node_credentials.cc b/src/node_credentials.cc
index 511ea3b01408eb..4c098c9870aa8e 100644
--- a/src/node_credentials.cc
+++ b/src/node_credentials.cc
@@ -413,23 +413,23 @@ static void Initialize(Local<Object> target,
   Environment* env = Environment::GetCurrent(context);
   Isolate* isolate = env->isolate();
 
-  env->SetMethod(target, "safeGetenv", SafeGetenv);
+  SetMethod(context, target, "safeGetenv", SafeGetenv);
 
 #ifdef NODE_IMPLEMENTS_POSIX_CREDENTIALS
   READONLY_TRUE_PROPERTY(target, "implementsPosixCredentials");
-  env->SetMethodNoSideEffect(target, "getuid", GetUid);
-  env->SetMethodNoSideEffect(target, "geteuid", GetEUid);
-  env->SetMethodNoSideEffect(target, "getgid", GetGid);
-  env->SetMethodNoSideEffect(target, "getegid", GetEGid);
-  env->SetMethodNoSideEffect(target, "getgroups", GetGroups);
+  SetMethodNoSideEffect(context, target, "getuid", GetUid);
+  SetMethodNoSideEffect(context, target, "geteuid", GetEUid);
+  SetMethodNoSideEffect(context, target, "getgid", GetGid);
+  SetMethodNoSideEffect(context, target, "getegid", GetEGid);
+  SetMethodNoSideEffect(context, target, "getgroups", GetGroups);
 
   if (env->owns_process_state()) {
-    env->SetMethod(target, "initgroups", InitGroups);
-    env->SetMethod(target, "setegid", SetEGid);
-    env->SetMethod(target, "seteuid", SetEUid);
-    env->SetMethod(target, "setgid", SetGid);
-    env->SetMethod(target, "setuid", SetUid);
-    env->SetMethod(target, "setgroups", SetGroups);
+    SetMethod(context, target, "initgroups", InitGroups);
+    SetMethod(context, target, "setegid", SetEGid);
+    SetMethod(context, target, "seteuid", SetEUid);
+    SetMethod(context, target, "setgid", SetGid);
+    SetMethod(context, target, "setuid", SetUid);
+    SetMethod(context, target, "setgroups", SetGroups);
   }
 #endif  // NODE_IMPLEMENTS_POSIX_CREDENTIALS
 }
diff --git a/src/node_dir.cc b/src/node_dir.cc
index c530da0cc3be4b..e501934ecc70ac 100644
--- a/src/node_dir.cc
+++ b/src/node_dir.cc
@@ -351,17 +351,18 @@ void Initialize(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  env->SetMethod(target, "opendir", OpenDir);
+  SetMethod(context, target, "opendir", OpenDir);
 
   // Create FunctionTemplate for DirHandle
-  Local<FunctionTemplate> dir = env->NewFunctionTemplate(DirHandle::New);
+  Local<FunctionTemplate> dir = NewFunctionTemplate(isolate, DirHandle::New);
   dir->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetProtoMethod(dir, "read", DirHandle::Read);
-  env->SetProtoMethod(dir, "close", DirHandle::Close);
+  SetProtoMethod(isolate, dir, "read", DirHandle::Read);
+  SetProtoMethod(isolate, dir, "close", DirHandle::Close);
   Local<ObjectTemplate> dirt = dir->InstanceTemplate();
   dirt->SetInternalFieldCount(DirHandle::kInternalFieldCount);
-  env->SetConstructorFunction(target, "DirHandle", dir);
+  SetConstructorFunction(context, target, "DirHandle", dir);
   env->set_dir_instance_template(dirt);
 }
 
diff --git a/src/node_dtrace.cc b/src/node_dtrace.cc
index 52e63992833c38..9768880ac78a37 100644
--- a/src/node_dtrace.cc
+++ b/src/node_dtrace.cc
@@ -301,10 +301,8 @@ void InitializeDTrace(Local<Object> target,
                       Local<Value> unused,
                       Local<Context> context,
                       void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-
 #if defined HAVE_DTRACE || defined HAVE_ETW
-#define V(name) env->SetMethod(target, #name, name);
+#define V(name) SetMethod(context, target, #name, name);
   NODE_PROBES(V)
 #undef V
 #endif  // defined HAVE_DTRACE || defined HAVE_ETW
diff --git a/src/node_errors.cc b/src/node_errors.cc
index 7c017264a88fd1..12e3ff957e035a 100644
--- a/src/node_errors.cc
+++ b/src/node_errors.cc
@@ -924,19 +924,23 @@ void Initialize(Local<Object> target,
                 Local<Value> unused,
                 Local<Context> context,
                 void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-  env->SetMethod(
-      target, "setPrepareStackTraceCallback", SetPrepareStackTraceCallback);
-  env->SetMethod(target, "setSourceMapsEnabled", SetSourceMapsEnabled);
-  env->SetMethod(target,
-                 "setMaybeCacheGeneratedSourceMap",
-                 SetMaybeCacheGeneratedSourceMap);
-  env->SetMethod(target,
-                 "setEnhanceStackForFatalException",
-                 SetEnhanceStackForFatalException);
-  env->SetMethodNoSideEffect(
-      target, "noSideEffectsToString", NoSideEffectsToString);
-  env->SetMethod(target, "triggerUncaughtException", TriggerUncaughtException);
+  SetMethod(context,
+            target,
+            "setPrepareStackTraceCallback",
+            SetPrepareStackTraceCallback);
+  SetMethod(context, target, "setSourceMapsEnabled", SetSourceMapsEnabled);
+  SetMethod(context,
+            target,
+            "setMaybeCacheGeneratedSourceMap",
+            SetMaybeCacheGeneratedSourceMap);
+  SetMethod(context,
+            target,
+            "setEnhanceStackForFatalException",
+            SetEnhanceStackForFatalException);
+  SetMethodNoSideEffect(
+      context, target, "noSideEffectsToString", NoSideEffectsToString);
+  SetMethod(
+      context, target, "triggerUncaughtException", TriggerUncaughtException);
 }
 
 void DecorateErrorStack(Environment* env,
diff --git a/src/node_file.cc b/src/node_file.cc
index 21297acbcfa90d..0d4b8cac801a30 100644
--- a/src/node_file.cc
+++ b/src/node_file.cc
@@ -2436,46 +2436,46 @@ void Initialize(Local<Object> target,
       env->AddBindingData<BindingData>(context, target);
   if (binding_data == nullptr) return;
 
-  env->SetMethod(target, "access", Access);
-  env->SetMethod(target, "close", Close);
-  env->SetMethod(target, "open", Open);
-  env->SetMethod(target, "openFileHandle", OpenFileHandle);
-  env->SetMethod(target, "read", Read);
-  env->SetMethod(target, "readBuffers", ReadBuffers);
-  env->SetMethod(target, "fdatasync", Fdatasync);
-  env->SetMethod(target, "fsync", Fsync);
-  env->SetMethod(target, "rename", Rename);
-  env->SetMethod(target, "ftruncate", FTruncate);
-  env->SetMethod(target, "rmdir", RMDir);
-  env->SetMethod(target, "mkdir", MKDir);
-  env->SetMethod(target, "readdir", ReadDir);
-  env->SetMethod(target, "internalModuleReadJSON", InternalModuleReadJSON);
-  env->SetMethod(target, "internalModuleStat", InternalModuleStat);
-  env->SetMethod(target, "stat", Stat);
-  env->SetMethod(target, "lstat", LStat);
-  env->SetMethod(target, "fstat", FStat);
-  env->SetMethod(target, "link", Link);
-  env->SetMethod(target, "symlink", Symlink);
-  env->SetMethod(target, "readlink", ReadLink);
-  env->SetMethod(target, "unlink", Unlink);
-  env->SetMethod(target, "writeBuffer", WriteBuffer);
-  env->SetMethod(target, "writeBuffers", WriteBuffers);
-  env->SetMethod(target, "writeString", WriteString);
-  env->SetMethod(target, "realpath", RealPath);
-  env->SetMethod(target, "copyFile", CopyFile);
-
-  env->SetMethod(target, "chmod", Chmod);
-  env->SetMethod(target, "fchmod", FChmod);
-
-  env->SetMethod(target, "chown", Chown);
-  env->SetMethod(target, "fchown", FChown);
-  env->SetMethod(target, "lchown", LChown);
-
-  env->SetMethod(target, "utimes", UTimes);
-  env->SetMethod(target, "futimes", FUTimes);
-  env->SetMethod(target, "lutimes", LUTimes);
-
-  env->SetMethod(target, "mkdtemp", Mkdtemp);
+  SetMethod(context, target, "access", Access);
+  SetMethod(context, target, "close", Close);
+  SetMethod(context, target, "open", Open);
+  SetMethod(context, target, "openFileHandle", OpenFileHandle);
+  SetMethod(context, target, "read", Read);
+  SetMethod(context, target, "readBuffers", ReadBuffers);
+  SetMethod(context, target, "fdatasync", Fdatasync);
+  SetMethod(context, target, "fsync", Fsync);
+  SetMethod(context, target, "rename", Rename);
+  SetMethod(context, target, "ftruncate", FTruncate);
+  SetMethod(context, target, "rmdir", RMDir);
+  SetMethod(context, target, "mkdir", MKDir);
+  SetMethod(context, target, "readdir", ReadDir);
+  SetMethod(context, target, "internalModuleReadJSON", InternalModuleReadJSON);
+  SetMethod(context, target, "internalModuleStat", InternalModuleStat);
+  SetMethod(context, target, "stat", Stat);
+  SetMethod(context, target, "lstat", LStat);
+  SetMethod(context, target, "fstat", FStat);
+  SetMethod(context, target, "link", Link);
+  SetMethod(context, target, "symlink", Symlink);
+  SetMethod(context, target, "readlink", ReadLink);
+  SetMethod(context, target, "unlink", Unlink);
+  SetMethod(context, target, "writeBuffer", WriteBuffer);
+  SetMethod(context, target, "writeBuffers", WriteBuffers);
+  SetMethod(context, target, "writeString", WriteString);
+  SetMethod(context, target, "realpath", RealPath);
+  SetMethod(context, target, "copyFile", CopyFile);
+
+  SetMethod(context, target, "chmod", Chmod);
+  SetMethod(context, target, "fchmod", FChmod);
+
+  SetMethod(context, target, "chown", Chown);
+  SetMethod(context, target, "fchown", FChown);
+  SetMethod(context, target, "lchown", LChown);
+
+  SetMethod(context, target, "utimes", UTimes);
+  SetMethod(context, target, "futimes", FUTimes);
+  SetMethod(context, target, "lutimes", LUTimes);
+
+  SetMethod(context, target, "mkdtemp", Mkdtemp);
 
   target
       ->Set(context,
@@ -2488,11 +2488,11 @@ void Initialize(Local<Object> target,
   StatWatcher::Initialize(env, target);
 
   // Create FunctionTemplate for FSReqCallback
-  Local<FunctionTemplate> fst = env->NewFunctionTemplate(NewFSReqCallback);
+  Local<FunctionTemplate> fst = NewFunctionTemplate(isolate, NewFSReqCallback);
   fst->InstanceTemplate()->SetInternalFieldCount(
       FSReqBase::kInternalFieldCount);
   fst->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetConstructorFunction(target, "FSReqCallback", fst);
+  SetConstructorFunction(context, target, "FSReqCallback", fst);
 
   // Create FunctionTemplate for FileHandleReadWrap. There’s no need
   // to do anything in the constructor, so we only store the instance template.
@@ -2517,14 +2517,14 @@ void Initialize(Local<Object> target,
   env->set_fsreqpromise_constructor_template(fpo);
 
   // Create FunctionTemplate for FileHandle
-  Local<FunctionTemplate> fd = env->NewFunctionTemplate(FileHandle::New);
+  Local<FunctionTemplate> fd = NewFunctionTemplate(isolate, FileHandle::New);
   fd->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetProtoMethod(fd, "close", FileHandle::Close);
-  env->SetProtoMethod(fd, "releaseFD", FileHandle::ReleaseFD);
+  SetProtoMethod(isolate, fd, "close", FileHandle::Close);
+  SetProtoMethod(isolate, fd, "releaseFD", FileHandle::ReleaseFD);
   Local<ObjectTemplate> fdt = fd->InstanceTemplate();
   fdt->SetInternalFieldCount(FileHandle::kInternalFieldCount);
   StreamBase::AddMethods(env, fd);
-  env->SetConstructorFunction(target, "FileHandle", fd);
+  SetConstructorFunction(context, target, "FileHandle", fd);
   env->set_fd_constructor_template(fdt);
 
   // Create FunctionTemplate for FileHandle::CloseReq
diff --git a/src/node_http2.cc b/src/node_http2.cc
index 8df924a29028e2..574ddc14a30cb4 100644
--- a/src/node_http2.cc
+++ b/src/node_http2.cc
@@ -3204,10 +3204,10 @@ void Initialize(Local<Object> target,
   NODE_DEFINE_CONSTANT(target, kSessionHasAltsvcListeners);
 
   // Method to fetch the nghttp2 string description of an nghttp2 error code
-  env->SetMethod(target, "nghttp2ErrorString", HttpErrorString);
-  env->SetMethod(target, "refreshDefaultSettings", RefreshDefaultSettings);
-  env->SetMethod(target, "packSettings", PackSettings);
-  env->SetMethod(target, "setCallbackFunctions", SetCallbackFunctions);
+  SetMethod(context, target, "nghttp2ErrorString", HttpErrorString);
+  SetMethod(context, target, "refreshDefaultSettings", RefreshDefaultSettings);
+  SetMethod(context, target, "packSettings", PackSettings);
+  SetMethod(context, target, "setCallbackFunctions", SetCallbackFunctions);
 
   Local<FunctionTemplate> ping = FunctionTemplate::New(env->isolate());
   ping->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "Http2Ping"));
@@ -3223,50 +3223,54 @@ void Initialize(Local<Object> target,
   env->set_http2settings_constructor_template(settingt);
 
   Local<FunctionTemplate> stream = FunctionTemplate::New(env->isolate());
-  env->SetProtoMethod(stream, "id", Http2Stream::GetID);
-  env->SetProtoMethod(stream, "destroy", Http2Stream::Destroy);
-  env->SetProtoMethod(stream, "priority", Http2Stream::Priority);
-  env->SetProtoMethod(stream, "pushPromise", Http2Stream::PushPromise);
-  env->SetProtoMethod(stream, "info", Http2Stream::Info);
-  env->SetProtoMethod(stream, "trailers", Http2Stream::Trailers);
-  env->SetProtoMethod(stream, "respond", Http2Stream::Respond);
-  env->SetProtoMethod(stream, "rstStream", Http2Stream::RstStream);
-  env->SetProtoMethod(stream, "refreshState", Http2Stream::RefreshState);
+  SetProtoMethod(isolate, stream, "id", Http2Stream::GetID);
+  SetProtoMethod(isolate, stream, "destroy", Http2Stream::Destroy);
+  SetProtoMethod(isolate, stream, "priority", Http2Stream::Priority);
+  SetProtoMethod(isolate, stream, "pushPromise", Http2Stream::PushPromise);
+  SetProtoMethod(isolate, stream, "info", Http2Stream::Info);
+  SetProtoMethod(isolate, stream, "trailers", Http2Stream::Trailers);
+  SetProtoMethod(isolate, stream, "respond", Http2Stream::Respond);
+  SetProtoMethod(isolate, stream, "rstStream", Http2Stream::RstStream);
+  SetProtoMethod(isolate, stream, "refreshState", Http2Stream::RefreshState);
   stream->Inherit(AsyncWrap::GetConstructorTemplate(env));
   StreamBase::AddMethods(env, stream);
   Local<ObjectTemplate> streamt = stream->InstanceTemplate();
   streamt->SetInternalFieldCount(StreamBase::kInternalFieldCount);
   env->set_http2stream_constructor_template(streamt);
-  env->SetConstructorFunction(target, "Http2Stream", stream);
+  SetConstructorFunction(context, target, "Http2Stream", stream);
 
   Local<FunctionTemplate> session =
-      env->NewFunctionTemplate(Http2Session::New);
+      NewFunctionTemplate(isolate, Http2Session::New);
   session->InstanceTemplate()->SetInternalFieldCount(
       Http2Session::kInternalFieldCount);
   session->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetProtoMethod(session, "origin", Http2Session::Origin);
-  env->SetProtoMethod(session, "altsvc", Http2Session::AltSvc);
-  env->SetProtoMethod(session, "ping", Http2Session::Ping);
-  env->SetProtoMethod(session, "consume", Http2Session::Consume);
-  env->SetProtoMethod(session, "receive", Http2Session::Receive);
-  env->SetProtoMethod(session, "destroy", Http2Session::Destroy);
-  env->SetProtoMethod(session, "goaway", Http2Session::Goaway);
-  env->SetProtoMethod(session, "settings", Http2Session::Settings);
-  env->SetProtoMethod(session, "request", Http2Session::Request);
-  env->SetProtoMethod(session, "setNextStreamID",
-                      Http2Session::SetNextStreamID);
-  env->SetProtoMethod(session, "setLocalWindowSize",
-                      Http2Session::SetLocalWindowSize);
-  env->SetProtoMethod(session, "updateChunksSent",
-                      Http2Session::UpdateChunksSent);
-  env->SetProtoMethod(session, "refreshState", Http2Session::RefreshState);
-  env->SetProtoMethod(
-      session, "localSettings",
+  SetProtoMethod(isolate, session, "origin", Http2Session::Origin);
+  SetProtoMethod(isolate, session, "altsvc", Http2Session::AltSvc);
+  SetProtoMethod(isolate, session, "ping", Http2Session::Ping);
+  SetProtoMethod(isolate, session, "consume", Http2Session::Consume);
+  SetProtoMethod(isolate, session, "receive", Http2Session::Receive);
+  SetProtoMethod(isolate, session, "destroy", Http2Session::Destroy);
+  SetProtoMethod(isolate, session, "goaway", Http2Session::Goaway);
+  SetProtoMethod(isolate, session, "settings", Http2Session::Settings);
+  SetProtoMethod(isolate, session, "request", Http2Session::Request);
+  SetProtoMethod(
+      isolate, session, "setNextStreamID", Http2Session::SetNextStreamID);
+  SetProtoMethod(
+      isolate, session, "setLocalWindowSize", Http2Session::SetLocalWindowSize);
+  SetProtoMethod(
+      isolate, session, "updateChunksSent", Http2Session::UpdateChunksSent);
+  SetProtoMethod(isolate, session, "refreshState", Http2Session::RefreshState);
+  SetProtoMethod(
+      isolate,
+      session,
+      "localSettings",
       Http2Session::RefreshSettings<nghttp2_session_get_local_settings>);
-  env->SetProtoMethod(
-      session, "remoteSettings",
+  SetProtoMethod(
+      isolate,
+      session,
+      "remoteSettings",
       Http2Session::RefreshSettings<nghttp2_session_get_remote_settings>);
-  env->SetConstructorFunction(target, "Http2Session", session);
+  SetConstructorFunction(context, target, "Http2Session", session);
 
   Local<Object> constants = Object::New(isolate);
 
diff --git a/src/node_http_parser.cc b/src/node_http_parser.cc
index 1b7e4ad1b8676b..74f32480b95be3 100644
--- a/src/node_http_parser.cc
+++ b/src/node_http_parser.cc
@@ -60,6 +60,7 @@ using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::MaybeLocal;
 using v8::Number;
@@ -941,11 +942,12 @@ void InitializeHttpParser(Local<Object> target,
                           Local<Context> context,
                           void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
   BindingData* const binding_data =
       env->AddBindingData<BindingData>(context, target);
   if (binding_data == nullptr) return;
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(Parser::New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, Parser::New);
   t->InstanceTemplate()->SetInternalFieldCount(Parser::kInternalFieldCount);
 
   t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "REQUEST"),
@@ -989,18 +991,18 @@ void InitializeHttpParser(Local<Object> target,
               methods).Check();
 
   t->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetProtoMethod(t, "close", Parser::Close);
-  env->SetProtoMethod(t, "free", Parser::Free);
-  env->SetProtoMethod(t, "execute", Parser::Execute);
-  env->SetProtoMethod(t, "finish", Parser::Finish);
-  env->SetProtoMethod(t, "initialize", Parser::Initialize);
-  env->SetProtoMethod(t, "pause", Parser::Pause<true>);
-  env->SetProtoMethod(t, "resume", Parser::Pause<false>);
-  env->SetProtoMethod(t, "consume", Parser::Consume);
-  env->SetProtoMethod(t, "unconsume", Parser::Unconsume);
-  env->SetProtoMethod(t, "getCurrentBuffer", Parser::GetCurrentBuffer);
-
-  env->SetConstructorFunction(target, "HTTPParser", t);
+  SetProtoMethod(isolate, t, "close", Parser::Close);
+  SetProtoMethod(isolate, t, "free", Parser::Free);
+  SetProtoMethod(isolate, t, "execute", Parser::Execute);
+  SetProtoMethod(isolate, t, "finish", Parser::Finish);
+  SetProtoMethod(isolate, t, "initialize", Parser::Initialize);
+  SetProtoMethod(isolate, t, "pause", Parser::Pause<true>);
+  SetProtoMethod(isolate, t, "resume", Parser::Pause<false>);
+  SetProtoMethod(isolate, t, "consume", Parser::Consume);
+  SetProtoMethod(isolate, t, "unconsume", Parser::Unconsume);
+  SetProtoMethod(isolate, t, "getCurrentBuffer", Parser::GetCurrentBuffer);
+
+  SetConstructorFunction(context, target, "HTTPParser", t);
 }
 
 }  // anonymous namespace
diff --git a/src/node_i18n.cc b/src/node_i18n.cc
index d96efaa9df7b2f..581d52a7d05738 100644
--- a/src/node_i18n.cc
+++ b/src/node_i18n.cc
@@ -838,17 +838,17 @@ void Initialize(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
-  env->SetMethod(target, "toUnicode", ToUnicode);
-  env->SetMethod(target, "toASCII", ToASCII);
-  env->SetMethod(target, "getStringWidth", GetStringWidth);
+  SetMethod(context, target, "toUnicode", ToUnicode);
+  SetMethod(context, target, "toASCII", ToASCII);
+  SetMethod(context, target, "getStringWidth", GetStringWidth);
 
   // One-shot converters
-  env->SetMethod(target, "icuErrName", ICUErrorName);
-  env->SetMethod(target, "transcode", Transcode);
+  SetMethod(context, target, "icuErrName", ICUErrorName);
+  SetMethod(context, target, "transcode", Transcode);
 
   // ConverterObject
   {
-    Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate());
+    Local<FunctionTemplate> t = NewFunctionTemplate(env->isolate(), nullptr);
     t->Inherit(BaseObject::GetConstructorTemplate(env));
     t->InstanceTemplate()->SetInternalFieldCount(
         ConverterObject::kInternalFieldCount);
@@ -858,9 +858,9 @@ void Initialize(Local<Object> target,
     env->set_i18n_converter_template(t->InstanceTemplate());
   }
 
-  env->SetMethod(target, "getConverter", ConverterObject::Create);
-  env->SetMethod(target, "decode", ConverterObject::Decode);
-  env->SetMethod(target, "hasConverter", ConverterObject::Has);
+  SetMethod(context, target, "getConverter", ConverterObject::Create);
+  SetMethod(context, target, "decode", ConverterObject::Decode);
+  SetMethod(context, target, "hasConverter", ConverterObject::Has);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/node_messaging.cc b/src/node_messaging.cc
index 152d9c164750c2..f88270fc75de91 100644
--- a/src/node_messaging.cc
+++ b/src/node_messaging.cc
@@ -1111,14 +1111,15 @@ Local<FunctionTemplate> GetMessagePortConstructorTemplate(Environment* env) {
     return templ;
 
   {
-    Local<FunctionTemplate> m = env->NewFunctionTemplate(MessagePort::New);
+    Isolate* isolate = env->isolate();
+    Local<FunctionTemplate> m = NewFunctionTemplate(isolate, MessagePort::New);
     m->SetClassName(env->message_port_constructor_string());
     m->InstanceTemplate()->SetInternalFieldCount(
         MessagePort::kInternalFieldCount);
     m->Inherit(HandleWrap::GetConstructorTemplate(env));
 
-    env->SetProtoMethod(m, "postMessage", MessagePort::PostMessage);
-    env->SetProtoMethod(m, "start", MessagePort::Start);
+    SetProtoMethod(isolate, m, "postMessage", MessagePort::PostMessage);
+    SetProtoMethod(isolate, m, "start", MessagePort::Start);
 
     env->set_message_port_constructor_template(m);
   }
@@ -1451,38 +1452,43 @@ static void InitMessaging(Local<Object> target,
                           Local<Context> context,
                           void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
   {
-    env->SetConstructorFunction(
-        target,
-        "MessageChannel",
-        env->NewFunctionTemplate(MessageChannel));
+    SetConstructorFunction(context,
+                           target,
+                           "MessageChannel",
+                           NewFunctionTemplate(isolate, MessageChannel));
   }
 
   {
-    Local<FunctionTemplate> t = env->NewFunctionTemplate(JSTransferable::New);
+    Local<FunctionTemplate> t =
+        NewFunctionTemplate(isolate, JSTransferable::New);
     t->Inherit(BaseObject::GetConstructorTemplate(env));
     t->InstanceTemplate()->SetInternalFieldCount(
         JSTransferable::kInternalFieldCount);
-    env->SetConstructorFunction(target, "JSTransferable", t);
+    SetConstructorFunction(context, target, "JSTransferable", t);
   }
 
-  env->SetConstructorFunction(
-      target,
-      env->message_port_constructor_string(),
-      GetMessagePortConstructorTemplate(env));
+  SetConstructorFunction(context,
+                         target,
+                         env->message_port_constructor_string(),
+                         GetMessagePortConstructorTemplate(env));
 
   // These are not methods on the MessagePort prototype, because
   // the browser equivalents do not provide them.
-  env->SetMethod(target, "stopMessagePort", MessagePort::Stop);
-  env->SetMethod(target, "checkMessagePort", MessagePort::CheckType);
-  env->SetMethod(target, "drainMessagePort", MessagePort::Drain);
-  env->SetMethod(target, "receiveMessageOnPort", MessagePort::ReceiveMessage);
-  env->SetMethod(target, "moveMessagePortToContext",
-                 MessagePort::MoveToContext);
-  env->SetMethod(target, "setDeserializerCreateObjectFunction",
-                 SetDeserializerCreateObjectFunction);
-  env->SetMethod(target, "broadcastChannel", BroadcastChannel);
+  SetMethod(context, target, "stopMessagePort", MessagePort::Stop);
+  SetMethod(context, target, "checkMessagePort", MessagePort::CheckType);
+  SetMethod(context, target, "drainMessagePort", MessagePort::Drain);
+  SetMethod(
+      context, target, "receiveMessageOnPort", MessagePort::ReceiveMessage);
+  SetMethod(
+      context, target, "moveMessagePortToContext", MessagePort::MoveToContext);
+  SetMethod(context,
+            target,
+            "setDeserializerCreateObjectFunction",
+            SetDeserializerCreateObjectFunction);
+  SetMethod(context, target, "broadcastChannel", BroadcastChannel);
 
   {
     Local<Function> domexception = GetDOMException(context).ToLocalChecked();
diff --git a/src/node_native_module_env.cc b/src/node_native_module_env.cc
index b59ed7cb75cf67..523c5152f3c8dc 100644
--- a/src/node_native_module_env.cc
+++ b/src/node_native_module_env.cc
@@ -179,7 +179,7 @@ void NativeModuleEnv::Initialize(Local<Object> target,
   Environment* env = Environment::GetCurrent(context);
 
   target
-      ->SetAccessor(env->context(),
+      ->SetAccessor(context,
                     env->config_string(),
                     ConfigStringGetter,
                     nullptr,
@@ -189,7 +189,7 @@ void NativeModuleEnv::Initialize(Local<Object> target,
                     SideEffectType::kHasNoSideEffect)
       .Check();
   target
-      ->SetAccessor(env->context(),
+      ->SetAccessor(context,
                     FIXED_ONE_BYTE_STRING(env->isolate(), "moduleIds"),
                     ModuleIdsGetter,
                     nullptr,
@@ -200,7 +200,7 @@ void NativeModuleEnv::Initialize(Local<Object> target,
       .Check();
 
   target
-      ->SetAccessor(env->context(),
+      ->SetAccessor(context,
                     FIXED_ONE_BYTE_STRING(env->isolate(), "moduleCategories"),
                     GetModuleCategories,
                     nullptr,
@@ -210,9 +210,10 @@ void NativeModuleEnv::Initialize(Local<Object> target,
                     SideEffectType::kHasNoSideEffect)
       .Check();
 
-  env->SetMethod(target, "getCacheUsage", NativeModuleEnv::GetCacheUsage);
-  env->SetMethod(target, "compileFunction", NativeModuleEnv::CompileFunction);
-  env->SetMethod(target, "hasCachedBuiltins", HasCachedBuiltins);
+  SetMethod(context, target, "getCacheUsage", NativeModuleEnv::GetCacheUsage);
+  SetMethod(
+      context, target, "compileFunction", NativeModuleEnv::CompileFunction);
+  SetMethod(context, target, "hasCachedBuiltins", HasCachedBuiltins);
   // internalBinding('native_module') should be frozen
   target->SetIntegrityLevel(context, IntegrityLevel::kFrozen).FromJust();
 }
diff --git a/src/node_options.cc b/src/node_options.cc
index 3daa3cc12debb1..2c31d64cb3e47e 100644
--- a/src/node_options.cc
+++ b/src/node_options.cc
@@ -1141,8 +1141,9 @@ void Initialize(Local<Object> target,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
   Isolate* isolate = env->isolate();
-  env->SetMethodNoSideEffect(target, "getCLIOptions", GetCLIOptions);
-  env->SetMethodNoSideEffect(target, "getEmbedderOptions", GetEmbedderOptions);
+  SetMethodNoSideEffect(context, target, "getCLIOptions", GetCLIOptions);
+  SetMethodNoSideEffect(
+      context, target, "getEmbedderOptions", GetEmbedderOptions);
 
   Local<Object> env_settings = Object::New(isolate);
   NODE_DEFINE_CONSTANT(env_settings, kAllowedInEnvironment);
diff --git a/src/node_os.cc b/src/node_os.cc
index 046a6106ccd0e5..5b4d6567fb3b0a 100644
--- a/src/node_os.cc
+++ b/src/node_os.cc
@@ -382,21 +382,23 @@ void Initialize(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
-  env->SetMethod(target, "getHostname", GetHostname);
-  env->SetMethod(target, "getLoadAvg", GetLoadAvg);
-  env->SetMethod(target, "getUptime", GetUptime);
-  env->SetMethod(target, "getTotalMem", GetTotalMemory);
-  env->SetMethod(target, "getFreeMem", GetFreeMemory);
-  env->SetMethod(target, "getCPUs", GetCPUInfo);
-  env->SetMethod(target, "getInterfaceAddresses", GetInterfaceAddresses);
-  env->SetMethod(target, "getHomeDirectory", GetHomeDirectory);
-  env->SetMethod(target, "getUserInfo", GetUserInfo);
-  env->SetMethod(target, "setPriority", SetPriority);
-  env->SetMethod(target, "getPriority", GetPriority);
-  env->SetMethod(target, "getOSInformation", GetOSInformation);
-  target->Set(env->context(),
-              FIXED_ONE_BYTE_STRING(env->isolate(), "isBigEndian"),
-              Boolean::New(env->isolate(), IsBigEndian())).Check();
+  SetMethod(context, target, "getHostname", GetHostname);
+  SetMethod(context, target, "getLoadAvg", GetLoadAvg);
+  SetMethod(context, target, "getUptime", GetUptime);
+  SetMethod(context, target, "getTotalMem", GetTotalMemory);
+  SetMethod(context, target, "getFreeMem", GetFreeMemory);
+  SetMethod(context, target, "getCPUs", GetCPUInfo);
+  SetMethod(context, target, "getInterfaceAddresses", GetInterfaceAddresses);
+  SetMethod(context, target, "getHomeDirectory", GetHomeDirectory);
+  SetMethod(context, target, "getUserInfo", GetUserInfo);
+  SetMethod(context, target, "setPriority", SetPriority);
+  SetMethod(context, target, "getPriority", GetPriority);
+  SetMethod(context, target, "getOSInformation", GetOSInformation);
+  target
+      ->Set(context,
+            FIXED_ONE_BYTE_STRING(env->isolate(), "isBigEndian"),
+            Boolean::New(env->isolate(), IsBigEndian()))
+      .Check();
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/node_perf.cc b/src/node_perf.cc
index f6637aa97e9d63..76f77be694326a 100644
--- a/src/node_perf.cc
+++ b/src/node_perf.cc
@@ -302,19 +302,21 @@ void Initialize(Local<Object> target,
   target->Set(context, performanceEntryString, fn).Check();
   env->set_performance_entry_template(fn);
 
-  env->SetMethod(target, "markMilestone", MarkMilestone);
-  env->SetMethod(target, "setupObservers", SetupPerformanceObservers);
-  env->SetMethod(target,
-                 "installGarbageCollectionTracking",
-                 InstallGarbageCollectionTracking);
-  env->SetMethod(target,
-                 "removeGarbageCollectionTracking",
-                 RemoveGarbageCollectionTracking);
-  env->SetMethod(target, "notify", Notify);
-  env->SetMethod(target, "loopIdleTime", LoopIdleTime);
-  env->SetMethod(target, "getTimeOrigin", GetTimeOrigin);
-  env->SetMethod(target, "getTimeOriginTimestamp", GetTimeOriginTimeStamp);
-  env->SetMethod(target, "createELDHistogram", CreateELDHistogram);
+  SetMethod(context, target, "markMilestone", MarkMilestone);
+  SetMethod(context, target, "setupObservers", SetupPerformanceObservers);
+  SetMethod(context,
+            target,
+            "installGarbageCollectionTracking",
+            InstallGarbageCollectionTracking);
+  SetMethod(context,
+            target,
+            "removeGarbageCollectionTracking",
+            RemoveGarbageCollectionTracking);
+  SetMethod(context, target, "notify", Notify);
+  SetMethod(context, target, "loopIdleTime", LoopIdleTime);
+  SetMethod(context, target, "getTimeOrigin", GetTimeOrigin);
+  SetMethod(context, target, "getTimeOriginTimestamp", GetTimeOriginTimeStamp);
+  SetMethod(context, target, "createELDHistogram", CreateELDHistogram);
 
   Local<Object> constants = Object::New(isolate);
 
diff --git a/src/node_process_methods.cc b/src/node_process_methods.cc
index bc5d41382f20f1..f75d51fe2b5d9c 100644
--- a/src/node_process_methods.cc
+++ b/src/node_process_methods.cc
@@ -466,8 +466,9 @@ v8::CFunction BindingData::fast_number_(v8::CFunction::Make(FastNumber));
 v8::CFunction BindingData::fast_bigint_(v8::CFunction::Make(FastBigInt));
 
 void BindingData::AddMethods() {
-  env()->SetFastMethod(object(), "hrtime", SlowNumber, &fast_number_);
-  env()->SetFastMethod(object(), "hrtimeBigInt", SlowBigInt, &fast_bigint_);
+  Local<Context> ctx = env()->context();
+  SetFastMethod(ctx, object(), "hrtime", SlowNumber, &fast_number_);
+  SetFastMethod(ctx, object(), "hrtimeBigInt", SlowBigInt, &fast_bigint_);
 }
 
 void BindingData::RegisterExternalReferences(
@@ -562,31 +563,31 @@ static void Initialize(Local<Object> target,
 
   // define various internal methods
   if (env->owns_process_state()) {
-    env->SetMethod(target, "_debugProcess", DebugProcess);
-    env->SetMethod(target, "_debugEnd", DebugEnd);
-    env->SetMethod(target, "abort", Abort);
-    env->SetMethod(target, "causeSegfault", CauseSegfault);
-    env->SetMethod(target, "chdir", Chdir);
+    SetMethod(context, target, "_debugProcess", DebugProcess);
+    SetMethod(context, target, "_debugEnd", DebugEnd);
+    SetMethod(context, target, "abort", Abort);
+    SetMethod(context, target, "causeSegfault", CauseSegfault);
+    SetMethod(context, target, "chdir", Chdir);
   }
 
-  env->SetMethod(target, "umask", Umask);
-  env->SetMethod(target, "_rawDebug", RawDebug);
-  env->SetMethod(target, "memoryUsage", MemoryUsage);
-  env->SetMethod(target, "rss", Rss);
-  env->SetMethod(target, "cpuUsage", CPUUsage);
-  env->SetMethod(target, "resourceUsage", ResourceUsage);
-
-  env->SetMethod(target, "_getActiveRequests", GetActiveRequests);
-  env->SetMethod(target, "_getActiveRequestsInfo", GetActiveRequestsInfo);
-  env->SetMethod(target, "_getActiveHandles", GetActiveHandles);
-  env->SetMethod(target, "_getActiveHandlesInfo", GetActiveHandlesInfo);
-  env->SetMethod(target, "_kill", Kill);
-
-  env->SetMethodNoSideEffect(target, "cwd", Cwd);
-  env->SetMethod(target, "dlopen", binding::DLOpen);
-  env->SetMethod(target, "reallyExit", ReallyExit);
-  env->SetMethodNoSideEffect(target, "uptime", Uptime);
-  env->SetMethod(target, "patchProcessObject", PatchProcessObject);
+  SetMethod(context, target, "umask", Umask);
+  SetMethod(context, target, "_rawDebug", RawDebug);
+  SetMethod(context, target, "memoryUsage", MemoryUsage);
+  SetMethod(context, target, "rss", Rss);
+  SetMethod(context, target, "cpuUsage", CPUUsage);
+  SetMethod(context, target, "resourceUsage", ResourceUsage);
+
+  SetMethod(context, target, "_getActiveRequestsInfo", GetActiveRequestsInfo);
+  SetMethod(context, target, "_getActiveRequests", GetActiveRequests);
+  SetMethod(context, target, "_getActiveHandles", GetActiveHandles);
+  SetMethod(context, target, "_getActiveHandlesInfo", GetActiveHandlesInfo);
+  SetMethod(context, target, "_kill", Kill);
+
+  SetMethodNoSideEffect(context, target, "cwd", Cwd);
+  SetMethod(context, target, "dlopen", binding::DLOpen);
+  SetMethod(context, target, "reallyExit", ReallyExit);
+  SetMethodNoSideEffect(context, target, "uptime", Uptime);
+  SetMethod(context, target, "patchProcessObject", PatchProcessObject);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/node_process_object.cc b/src/node_process_object.cc
index 29f6569a45e5b2..438ab3c0f09eea 100644
--- a/src/node_process_object.cc
+++ b/src/node_process_object.cc
@@ -135,7 +135,7 @@ MaybeLocal<Object> CreateProcessObject(Environment* env) {
 
   // process._rawDebug: may be overwritten later in JS land, but should be
   // available from the beginning for debugging purposes
-  env->SetMethod(process, "_rawDebug", RawDebug);
+  SetMethod(context, process, "_rawDebug", RawDebug);
 
   return scope.Escape(process);
 }
diff --git a/src/node_report_module.cc b/src/node_report_module.cc
index 160498c6276a3f..b57a933972d6c0 100644
--- a/src/node_report_module.cc
+++ b/src/node_report_module.cc
@@ -18,6 +18,7 @@
 namespace report {
 using node::Environment;
 using node::Mutex;
+using node::SetMethod;
 using node::Utf8Value;
 using v8::Context;
 using v8::FunctionCallbackInfo;
@@ -175,26 +176,29 @@ static void Initialize(Local<Object> exports,
                        Local<Value> unused,
                        Local<Context> context,
                        void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-
-  env->SetMethod(exports, "writeReport", WriteReport);
-  env->SetMethod(exports, "getReport", GetReport);
-  env->SetMethod(exports, "getCompact", GetCompact);
-  env->SetMethod(exports, "setCompact", SetCompact);
-  env->SetMethod(exports, "getDirectory", GetDirectory);
-  env->SetMethod(exports, "setDirectory", SetDirectory);
-  env->SetMethod(exports, "getFilename", GetFilename);
-  env->SetMethod(exports, "setFilename", SetFilename);
-  env->SetMethod(exports, "getSignal", GetSignal);
-  env->SetMethod(exports, "setSignal", SetSignal);
-  env->SetMethod(exports, "shouldReportOnFatalError", ShouldReportOnFatalError);
-  env->SetMethod(exports, "setReportOnFatalError", SetReportOnFatalError);
-  env->SetMethod(exports, "shouldReportOnSignal", ShouldReportOnSignal);
-  env->SetMethod(exports, "setReportOnSignal", SetReportOnSignal);
-  env->SetMethod(exports, "shouldReportOnUncaughtException",
-                 ShouldReportOnUncaughtException);
-  env->SetMethod(exports, "setReportOnUncaughtException",
-                 SetReportOnUncaughtException);
+  SetMethod(context, exports, "writeReport", WriteReport);
+  SetMethod(context, exports, "getReport", GetReport);
+  SetMethod(context, exports, "getCompact", GetCompact);
+  SetMethod(context, exports, "setCompact", SetCompact);
+  SetMethod(context, exports, "getDirectory", GetDirectory);
+  SetMethod(context, exports, "setDirectory", SetDirectory);
+  SetMethod(context, exports, "getFilename", GetFilename);
+  SetMethod(context, exports, "setFilename", SetFilename);
+  SetMethod(context, exports, "getSignal", GetSignal);
+  SetMethod(context, exports, "setSignal", SetSignal);
+  SetMethod(
+      context, exports, "shouldReportOnFatalError", ShouldReportOnFatalError);
+  SetMethod(context, exports, "setReportOnFatalError", SetReportOnFatalError);
+  SetMethod(context, exports, "shouldReportOnSignal", ShouldReportOnSignal);
+  SetMethod(context, exports, "setReportOnSignal", SetReportOnSignal);
+  SetMethod(context,
+            exports,
+            "shouldReportOnUncaughtException",
+            ShouldReportOnUncaughtException);
+  SetMethod(context,
+            exports,
+            "setReportOnUncaughtException",
+            SetReportOnUncaughtException);
 }
 
 void RegisterExternalReferences(node::ExternalReferenceRegistry* registry) {
diff --git a/src/node_serdes.cc b/src/node_serdes.cc
index f6f0034bc24d09..45a16d9de43703 100644
--- a/src/node_serdes.cc
+++ b/src/node_serdes.cc
@@ -455,53 +455,62 @@ void Initialize(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
+
   Local<FunctionTemplate> ser =
-      env->NewFunctionTemplate(SerializerContext::New);
+      NewFunctionTemplate(isolate, SerializerContext::New);
 
   ser->InstanceTemplate()->SetInternalFieldCount(
       SerializerContext::kInternalFieldCount);
   ser->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(ser, "writeHeader", SerializerContext::WriteHeader);
-  env->SetProtoMethod(ser, "writeValue", SerializerContext::WriteValue);
-  env->SetProtoMethod(ser, "releaseBuffer", SerializerContext::ReleaseBuffer);
-  env->SetProtoMethod(ser,
-                      "transferArrayBuffer",
-                      SerializerContext::TransferArrayBuffer);
-  env->SetProtoMethod(ser, "writeUint32", SerializerContext::WriteUint32);
-  env->SetProtoMethod(ser, "writeUint64", SerializerContext::WriteUint64);
-  env->SetProtoMethod(ser, "writeDouble", SerializerContext::WriteDouble);
-  env->SetProtoMethod(ser, "writeRawBytes", SerializerContext::WriteRawBytes);
-  env->SetProtoMethod(ser,
-                      "_setTreatArrayBufferViewsAsHostObjects",
-                      SerializerContext::SetTreatArrayBufferViewsAsHostObjects);
+  SetProtoMethod(isolate, ser, "writeHeader", SerializerContext::WriteHeader);
+  SetProtoMethod(isolate, ser, "writeValue", SerializerContext::WriteValue);
+  SetProtoMethod(
+      isolate, ser, "releaseBuffer", SerializerContext::ReleaseBuffer);
+  SetProtoMethod(isolate,
+                 ser,
+                 "transferArrayBuffer",
+                 SerializerContext::TransferArrayBuffer);
+  SetProtoMethod(isolate, ser, "writeUint32", SerializerContext::WriteUint32);
+  SetProtoMethod(isolate, ser, "writeUint64", SerializerContext::WriteUint64);
+  SetProtoMethod(isolate, ser, "writeDouble", SerializerContext::WriteDouble);
+  SetProtoMethod(
+      isolate, ser, "writeRawBytes", SerializerContext::WriteRawBytes);
+  SetProtoMethod(isolate,
+                 ser,
+                 "_setTreatArrayBufferViewsAsHostObjects",
+                 SerializerContext::SetTreatArrayBufferViewsAsHostObjects);
 
   ser->ReadOnlyPrototype();
-  env->SetConstructorFunction(target, "Serializer", ser);
+  SetConstructorFunction(context, target, "Serializer", ser);
 
   Local<FunctionTemplate> des =
-      env->NewFunctionTemplate(DeserializerContext::New);
+      NewFunctionTemplate(isolate, DeserializerContext::New);
 
   des->InstanceTemplate()->SetInternalFieldCount(
       DeserializerContext::kInternalFieldCount);
   des->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(des, "readHeader", DeserializerContext::ReadHeader);
-  env->SetProtoMethod(des, "readValue", DeserializerContext::ReadValue);
-  env->SetProtoMethod(des,
-                      "getWireFormatVersion",
-                      DeserializerContext::GetWireFormatVersion);
-  env->SetProtoMethod(des,
-                      "transferArrayBuffer",
-                      DeserializerContext::TransferArrayBuffer);
-  env->SetProtoMethod(des, "readUint32", DeserializerContext::ReadUint32);
-  env->SetProtoMethod(des, "readUint64", DeserializerContext::ReadUint64);
-  env->SetProtoMethod(des, "readDouble", DeserializerContext::ReadDouble);
-  env->SetProtoMethod(des, "_readRawBytes", DeserializerContext::ReadRawBytes);
+  SetProtoMethod(isolate, des, "readHeader", DeserializerContext::ReadHeader);
+  SetProtoMethod(isolate, des, "readValue", DeserializerContext::ReadValue);
+  SetProtoMethod(isolate,
+                 des,
+                 "getWireFormatVersion",
+                 DeserializerContext::GetWireFormatVersion);
+  SetProtoMethod(isolate,
+                 des,
+                 "transferArrayBuffer",
+                 DeserializerContext::TransferArrayBuffer);
+  SetProtoMethod(isolate, des, "readUint32", DeserializerContext::ReadUint32);
+  SetProtoMethod(isolate, des, "readUint64", DeserializerContext::ReadUint64);
+  SetProtoMethod(isolate, des, "readDouble", DeserializerContext::ReadDouble);
+  SetProtoMethod(
+      isolate, des, "_readRawBytes", DeserializerContext::ReadRawBytes);
 
   des->SetLength(1);
   des->ReadOnlyPrototype();
-  env->SetConstructorFunction(target, "Deserializer", des);
+  SetConstructorFunction(context, target, "Deserializer", des);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/node_snapshotable.cc b/src/node_snapshotable.cc
index 15b488e9e2cce4..bb5ca091dca4b9 100644
--- a/src/node_snapshotable.cc
+++ b/src/node_snapshotable.cc
@@ -420,13 +420,14 @@ void Initialize(Local<Object> target,
                 Local<Value> unused,
                 Local<Context> context,
                 void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-  env->SetMethod(target, "compileSerializeMain", CompileSerializeMain);
-  env->SetMethod(target, "markBootstrapComplete", MarkBootstrapComplete);
-  env->SetMethod(target, "setSerializeCallback", SetSerializeCallback);
-  env->SetMethod(target, "setDeserializeCallback", SetDeserializeCallback);
-  env->SetMethod(
-      target, "setDeserializeMainFunction", SetDeserializeMainFunction);
+  SetMethod(context, target, "compileSerializeMain", CompileSerializeMain);
+  SetMethod(context, target, "markBootstrapComplete", MarkBootstrapComplete);
+  SetMethod(context, target, "setSerializeCallback", SetSerializeCallback);
+  SetMethod(context, target, "setDeserializeCallback", SetDeserializeCallback);
+  SetMethod(context,
+            target,
+            "setDeserializeMainFunction",
+            SetDeserializeMainFunction);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/node_sockaddr.cc b/src/node_sockaddr.cc
index d29414302b7d28..331af1d9dba8e0 100644
--- a/src/node_sockaddr.cc
+++ b/src/node_sockaddr.cc
@@ -17,6 +17,7 @@ using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::Int32;
+using v8::Isolate;
 using v8::Local;
 using v8::MaybeLocal;
 using v8::Object;
@@ -697,15 +698,16 @@ Local<FunctionTemplate> SocketAddressBlockListWrap::GetConstructorTemplate(
     Environment* env) {
   Local<FunctionTemplate> tmpl = env->blocklist_constructor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = env->NewFunctionTemplate(SocketAddressBlockListWrap::New);
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, SocketAddressBlockListWrap::New);
     tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "BlockList"));
     tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
     tmpl->InstanceTemplate()->SetInternalFieldCount(kInternalFieldCount);
-    env->SetProtoMethod(tmpl, "addAddress", AddAddress);
-    env->SetProtoMethod(tmpl, "addRange", AddRange);
-    env->SetProtoMethod(tmpl, "addSubnet", AddSubnet);
-    env->SetProtoMethod(tmpl, "check", Check);
-    env->SetProtoMethod(tmpl, "getRules", GetRules);
+    SetProtoMethod(isolate, tmpl, "addAddress", AddAddress);
+    SetProtoMethod(isolate, tmpl, "addRange", AddRange);
+    SetProtoMethod(isolate, tmpl, "addSubnet", AddSubnet);
+    SetProtoMethod(isolate, tmpl, "check", Check);
+    SetProtoMethod(isolate, tmpl, "getRules", GetRules);
     env->set_blocklist_constructor_template(tmpl);
   }
   return tmpl;
@@ -718,11 +720,11 @@ void SocketAddressBlockListWrap::Initialize(
     void* priv) {
   Environment* env = Environment::GetCurrent(context);
 
-  env->SetConstructorFunction(
-      target,
-      "BlockList",
-      GetConstructorTemplate(env),
-      Environment::SetConstructorFunctionFlag::NONE);
+  SetConstructorFunction(context,
+                         target,
+                         "BlockList",
+                         GetConstructorTemplate(env),
+                         SetConstructorFunctionFlag::NONE);
 
   SocketAddressBase::Initialize(env, target);
 
@@ -750,25 +752,26 @@ Local<FunctionTemplate> SocketAddressBase::GetConstructorTemplate(
     Environment* env) {
   Local<FunctionTemplate> tmpl = env->socketaddress_constructor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = env->NewFunctionTemplate(New);
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, New);
     tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "SocketAddress"));
     tmpl->InstanceTemplate()->SetInternalFieldCount(
         SocketAddressBase::kInternalFieldCount);
     tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
-    env->SetProtoMethod(tmpl, "detail", Detail);
-    env->SetProtoMethod(tmpl, "legacyDetail", LegacyDetail);
-    env->SetProtoMethodNoSideEffect(tmpl, "flowlabel", GetFlowLabel);
+    SetProtoMethod(isolate, tmpl, "detail", Detail);
+    SetProtoMethod(isolate, tmpl, "legacyDetail", LegacyDetail);
+    SetProtoMethodNoSideEffect(isolate, tmpl, "flowlabel", GetFlowLabel);
     env->set_socketaddress_constructor_template(tmpl);
   }
   return tmpl;
 }
 
 void SocketAddressBase::Initialize(Environment* env, Local<Object> target) {
-  env->SetConstructorFunction(
-      target,
-      "SocketAddress",
-      GetConstructorTemplate(env),
-      Environment::SetConstructorFunctionFlag::NONE);
+  SetConstructorFunction(env->context(),
+                         target,
+                         "SocketAddress",
+                         GetConstructorTemplate(env),
+                         SetConstructorFunctionFlag::NONE);
 }
 
 BaseObjectPtr<SocketAddressBase> SocketAddressBase::Create(
diff --git a/src/node_stat_watcher.cc b/src/node_stat_watcher.cc
index b9f7903a2fdcb6..de8c099ca58594 100644
--- a/src/node_stat_watcher.cc
+++ b/src/node_stat_watcher.cc
@@ -37,23 +37,24 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::Uint32;
 using v8::Value;
 
-
 void StatWatcher::Initialize(Environment* env, Local<Object> target) {
+  Isolate* isolate = env->isolate();
   HandleScope scope(env->isolate());
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(StatWatcher::New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, StatWatcher::New);
   t->InstanceTemplate()->SetInternalFieldCount(
       StatWatcher::kInternalFieldCount);
   t->Inherit(HandleWrap::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "start", StatWatcher::Start);
+  SetProtoMethod(isolate, t, "start", StatWatcher::Start);
 
-  env->SetConstructorFunction(target, "StatWatcher", t);
+  SetConstructorFunction(env->context(), target, "StatWatcher", t);
 }
 
 void StatWatcher::RegisterExternalReferences(
diff --git a/src/node_task_queue.cc b/src/node_task_queue.cc
index 9bbdb3180217b3..2e62a072ee493d 100644
--- a/src/node_task_queue.cc
+++ b/src/node_task_queue.cc
@@ -196,9 +196,9 @@ static void Initialize(Local<Object> target,
   Environment* env = Environment::GetCurrent(context);
   Isolate* isolate = env->isolate();
 
-  env->SetMethod(target, "enqueueMicrotask", EnqueueMicrotask);
-  env->SetMethod(target, "setTickCallback", SetTickCallback);
-  env->SetMethod(target, "runMicrotasks", RunMicrotasks);
+  SetMethod(context, target, "enqueueMicrotask", EnqueueMicrotask);
+  SetMethod(context, target, "setTickCallback", SetTickCallback);
+  SetMethod(context, target, "runMicrotasks", RunMicrotasks);
   target->Set(env->context(),
               FIXED_ONE_BYTE_STRING(isolate, "tickInfo"),
               env->tick_info()->fields().GetJSArray()).Check();
@@ -212,9 +212,8 @@ static void Initialize(Local<Object> target,
   target->Set(env->context(),
               FIXED_ONE_BYTE_STRING(isolate, "promiseRejectEvents"),
               events).Check();
-  env->SetMethod(target,
-                 "setPromiseRejectCallback",
-                 SetPromiseRejectCallback);
+  SetMethod(
+      context, target, "setPromiseRejectCallback", SetPromiseRejectCallback);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/node_trace_events.cc b/src/node_trace_events.cc
index af60aff4ab7bbe..fd277b997dea6c 100644
--- a/src/node_trace_events.cc
+++ b/src/node_trace_events.cc
@@ -20,6 +20,7 @@ using v8::Context;
 using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
+using v8::Isolate;
 using v8::Local;
 using v8::NewStringType;
 using v8::Object;
@@ -124,21 +125,23 @@ void NodeCategorySet::Initialize(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  env->SetMethod(target, "getEnabledCategories", GetEnabledCategories);
-  env->SetMethod(
-      target, "setTraceCategoryStateUpdateHandler",
-      SetTraceCategoryStateUpdateHandler);
+  SetMethod(context, target, "getEnabledCategories", GetEnabledCategories);
+  SetMethod(context,
+            target,
+            "setTraceCategoryStateUpdateHandler",
+            SetTraceCategoryStateUpdateHandler);
 
   Local<FunctionTemplate> category_set =
-      env->NewFunctionTemplate(NodeCategorySet::New);
+      NewFunctionTemplate(isolate, NodeCategorySet::New);
   category_set->InstanceTemplate()->SetInternalFieldCount(
       NodeCategorySet::kInternalFieldCount);
   category_set->Inherit(BaseObject::GetConstructorTemplate(env));
-  env->SetProtoMethod(category_set, "enable", NodeCategorySet::Enable);
-  env->SetProtoMethod(category_set, "disable", NodeCategorySet::Disable);
+  SetProtoMethod(isolate, category_set, "enable", NodeCategorySet::Enable);
+  SetProtoMethod(isolate, category_set, "disable", NodeCategorySet::Disable);
 
-  env->SetConstructorFunction(target, "CategorySet", category_set);
+  SetConstructorFunction(context, target, "CategorySet", category_set);
 
   Local<String> isTraceCategoryEnabled =
       FIXED_ONE_BYTE_STRING(env->isolate(), "isTraceCategoryEnabled");
diff --git a/src/node_types.cc b/src/node_types.cc
index 1889d8c304110b..87550a1428bd34 100644
--- a/src/node_types.cc
+++ b/src/node_types.cc
@@ -65,16 +65,12 @@ void InitializeTypes(Local<Object> target,
                      Local<Value> unused,
                      Local<Context> context,
                      void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-
-#define V(type) env->SetMethodNoSideEffect(target,     \
-                                           "is" #type, \
-                                           Is##type);
+#define V(type) SetMethodNoSideEffect(context, target, "is" #type, Is##type);
   VALUE_METHOD_MAP(V)
 #undef V
 
-  env->SetMethodNoSideEffect(target, "isAnyArrayBuffer", IsAnyArrayBuffer);
-  env->SetMethodNoSideEffect(target, "isBoxedPrimitive", IsBoxedPrimitive);
+  SetMethodNoSideEffect(context, target, "isAnyArrayBuffer", IsAnyArrayBuffer);
+  SetMethodNoSideEffect(context, target, "isBoxedPrimitive", IsBoxedPrimitive);
 }
 
 }  // anonymous namespace
diff --git a/src/node_url.cc b/src/node_url.cc
index 1f9f4e40b084cb..ecc7cee6a39ffb 100644
--- a/src/node_url.cc
+++ b/src/node_url.cc
@@ -1800,12 +1800,11 @@ void Initialize(Local<Object> target,
                 Local<Value> unused,
                 Local<Context> context,
                 void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-  env->SetMethod(target, "parse", Parse);
-  env->SetMethodNoSideEffect(target, "encodeAuth", EncodeAuthSet);
-  env->SetMethodNoSideEffect(target, "domainToASCII", DomainToASCII);
-  env->SetMethodNoSideEffect(target, "domainToUnicode", DomainToUnicode);
-  env->SetMethod(target, "setURLConstructor", SetURLConstructor);
+  SetMethod(context, target, "parse", Parse);
+  SetMethodNoSideEffect(context, target, "encodeAuth", EncodeAuthSet);
+  SetMethodNoSideEffect(context, target, "domainToASCII", DomainToASCII);
+  SetMethodNoSideEffect(context, target, "domainToUnicode", DomainToUnicode);
+  SetMethod(context, target, "setURLConstructor", SetURLConstructor);
 
 #define XX(name, _) NODE_DEFINE_CONSTANT(target, name);
   FLAGS(XX)
diff --git a/src/node_util.cc b/src/node_util.cc
index 5b5dab36f08fbf..1613a276c58111 100644
--- a/src/node_util.cc
+++ b/src/node_util.cc
@@ -347,6 +347,7 @@ void Initialize(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
 #define V(name, _)                                                            \
   target->Set(context,                                                        \
@@ -368,18 +369,21 @@ void Initialize(Local<Object> target,
   V(kRejected);
 #undef V
 
-  env->SetMethodNoSideEffect(target, "getHiddenValue", GetHiddenValue);
-  env->SetMethod(target, "setHiddenValue", SetHiddenValue);
-  env->SetMethodNoSideEffect(target, "getPromiseDetails", GetPromiseDetails);
-  env->SetMethodNoSideEffect(target, "getProxyDetails", GetProxyDetails);
-  env->SetMethodNoSideEffect(target, "previewEntries", PreviewEntries);
-  env->SetMethodNoSideEffect(target, "getOwnNonIndexProperties",
-                                     GetOwnNonIndexProperties);
-  env->SetMethodNoSideEffect(target, "getConstructorName", GetConstructorName);
-  env->SetMethodNoSideEffect(target, "getExternalValue", GetExternalValue);
-  env->SetMethod(target, "sleep", Sleep);
-
-  env->SetMethod(target, "arrayBufferViewHasBuffer", ArrayBufferViewHasBuffer);
+  SetMethodNoSideEffect(context, target, "getHiddenValue", GetHiddenValue);
+  SetMethod(context, target, "setHiddenValue", SetHiddenValue);
+  SetMethodNoSideEffect(
+      context, target, "getPromiseDetails", GetPromiseDetails);
+  SetMethodNoSideEffect(context, target, "getProxyDetails", GetProxyDetails);
+  SetMethodNoSideEffect(context, target, "previewEntries", PreviewEntries);
+  SetMethodNoSideEffect(
+      context, target, "getOwnNonIndexProperties", GetOwnNonIndexProperties);
+  SetMethodNoSideEffect(
+      context, target, "getConstructorName", GetConstructorName);
+  SetMethodNoSideEffect(context, target, "getExternalValue", GetExternalValue);
+  SetMethod(context, target, "sleep", Sleep);
+
+  SetMethod(
+      context, target, "arrayBufferViewHasBuffer", ArrayBufferViewHasBuffer);
   Local<Object> constants = Object::New(env->isolate());
   NODE_DEFINE_CONSTANT(constants, ALL_PROPERTIES);
   NODE_DEFINE_CONSTANT(constants, ONLY_WRITABLE);
@@ -394,24 +398,24 @@ void Initialize(Local<Object> target,
   Local<String> should_abort_on_uncaught_toggle =
       FIXED_ONE_BYTE_STRING(env->isolate(), "shouldAbortOnUncaughtToggle");
   CHECK(target
-            ->Set(env->context(),
+            ->Set(context,
                   should_abort_on_uncaught_toggle,
                   env->should_abort_on_uncaught_toggle().GetJSArray())
             .FromJust());
 
   Local<FunctionTemplate> weak_ref =
-      env->NewFunctionTemplate(WeakReference::New);
+      NewFunctionTemplate(isolate, WeakReference::New);
   weak_ref->InstanceTemplate()->SetInternalFieldCount(
       WeakReference::kInternalFieldCount);
   weak_ref->Inherit(BaseObject::GetConstructorTemplate(env));
-  env->SetProtoMethod(weak_ref, "get", WeakReference::Get);
-  env->SetProtoMethod(weak_ref, "incRef", WeakReference::IncRef);
-  env->SetProtoMethod(weak_ref, "decRef", WeakReference::DecRef);
-  env->SetConstructorFunction(target, "WeakReference", weak_ref);
+  SetProtoMethod(isolate, weak_ref, "get", WeakReference::Get);
+  SetProtoMethod(isolate, weak_ref, "incRef", WeakReference::IncRef);
+  SetProtoMethod(isolate, weak_ref, "decRef", WeakReference::DecRef);
+  SetConstructorFunction(context, target, "WeakReference", weak_ref);
 
-  env->SetMethod(target, "guessHandleType", GuessHandleType);
+  SetMethod(context, target, "guessHandleType", GuessHandleType);
 
-  env->SetMethodNoSideEffect(target, "toUSVString", ToUSVString);
+  SetMethodNoSideEffect(context, target, "toUSVString", ToUSVString);
 }
 
 }  // namespace util
diff --git a/src/node_v8.cc b/src/node_v8.cc
index 9c72ddaf5293ec..36057762fa6e15 100644
--- a/src/node_v8.cc
+++ b/src/node_v8.cc
@@ -208,13 +208,17 @@ void Initialize(Local<Object> target,
       env->AddBindingData<BindingData>(context, target);
   if (binding_data == nullptr) return;
 
-  env->SetMethodNoSideEffect(target, "cachedDataVersionTag",
-                             CachedDataVersionTag);
-  env->SetMethod(
-      target, "updateHeapStatisticsBuffer", UpdateHeapStatisticsBuffer);
-
-  env->SetMethod(
-      target, "updateHeapCodeStatisticsBuffer", UpdateHeapCodeStatisticsBuffer);
+  SetMethodNoSideEffect(
+      context, target, "cachedDataVersionTag", CachedDataVersionTag);
+  SetMethod(context,
+            target,
+            "updateHeapStatisticsBuffer",
+            UpdateHeapStatisticsBuffer);
+
+  SetMethod(context,
+            target,
+            "updateHeapCodeStatisticsBuffer",
+            UpdateHeapCodeStatisticsBuffer);
 
   size_t number_of_heap_spaces = env->isolate()->NumberOfHeapSpaces();
 
@@ -227,19 +231,21 @@ void Initialize(Local<Object> target,
     heap_spaces[i] = String::NewFromUtf8(env->isolate(), s.space_name())
                                              .ToLocalChecked();
   }
-  target->Set(env->context(),
-              FIXED_ONE_BYTE_STRING(env->isolate(), "kHeapSpaces"),
-              Array::New(env->isolate(),
-                         heap_spaces.out(),
-                         number_of_heap_spaces)).Check();
+  target
+      ->Set(
+          context,
+          FIXED_ONE_BYTE_STRING(env->isolate(), "kHeapSpaces"),
+          Array::New(env->isolate(), heap_spaces.out(), number_of_heap_spaces))
+      .Check();
 
-  env->SetMethod(target,
-                 "updateHeapSpaceStatisticsBuffer",
-                 UpdateHeapSpaceStatisticsBuffer);
+  SetMethod(context,
+            target,
+            "updateHeapSpaceStatisticsBuffer",
+            UpdateHeapSpaceStatisticsBuffer);
 
 #define V(i, _, name)                                                          \
   target                                                                       \
-      ->Set(env->context(),                                                    \
+      ->Set(context,                                                           \
             FIXED_ONE_BYTE_STRING(env->isolate(), #name),                      \
             Uint32::NewFromUnsigned(env->isolate(), i))                        \
       .Check();
@@ -250,7 +256,7 @@ void Initialize(Local<Object> target,
 #undef V
 
   // Export symbols used by v8.setFlagsFromString()
-  env->SetMethod(target, "setFlagsFromString", SetFlagsFromString);
+  SetMethod(context, target, "setFlagsFromString", SetFlagsFromString);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/node_wasi.cc b/src/node_wasi.cc
index 965a619c8d4acd..a1b244018a6760 100644
--- a/src/node_wasi.cc
+++ b/src/node_wasi.cc
@@ -1668,62 +1668,67 @@ static void Initialize(Local<Object> target,
                        Local<Context> context,
                        void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  Local<FunctionTemplate> tmpl = env->NewFunctionTemplate(WASI::New);
+  Local<FunctionTemplate> tmpl = NewFunctionTemplate(isolate, WASI::New);
   tmpl->InstanceTemplate()->SetInternalFieldCount(WASI::kInternalFieldCount);
   tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(tmpl, "args_get", WASI::ArgsGet);
-  env->SetProtoMethod(tmpl, "args_sizes_get", WASI::ArgsSizesGet);
-  env->SetProtoMethod(tmpl, "clock_res_get", WASI::ClockResGet);
-  env->SetProtoMethod(tmpl, "clock_time_get", WASI::ClockTimeGet);
-  env->SetProtoMethod(tmpl, "environ_get", WASI::EnvironGet);
-  env->SetProtoMethod(tmpl, "environ_sizes_get", WASI::EnvironSizesGet);
-  env->SetProtoMethod(tmpl, "fd_advise", WASI::FdAdvise);
-  env->SetProtoMethod(tmpl, "fd_allocate", WASI::FdAllocate);
-  env->SetProtoMethod(tmpl, "fd_close", WASI::FdClose);
-  env->SetProtoMethod(tmpl, "fd_datasync", WASI::FdDatasync);
-  env->SetProtoMethod(tmpl, "fd_fdstat_get", WASI::FdFdstatGet);
-  env->SetProtoMethod(tmpl, "fd_fdstat_set_flags", WASI::FdFdstatSetFlags);
-  env->SetProtoMethod(tmpl, "fd_fdstat_set_rights", WASI::FdFdstatSetRights);
-  env->SetProtoMethod(tmpl, "fd_filestat_get", WASI::FdFilestatGet);
-  env->SetProtoMethod(tmpl, "fd_filestat_set_size", WASI::FdFilestatSetSize);
-  env->SetProtoMethod(tmpl, "fd_filestat_set_times", WASI::FdFilestatSetTimes);
-  env->SetProtoMethod(tmpl, "fd_pread", WASI::FdPread);
-  env->SetProtoMethod(tmpl, "fd_prestat_get", WASI::FdPrestatGet);
-  env->SetProtoMethod(tmpl, "fd_prestat_dir_name", WASI::FdPrestatDirName);
-  env->SetProtoMethod(tmpl, "fd_pwrite", WASI::FdPwrite);
-  env->SetProtoMethod(tmpl, "fd_read", WASI::FdRead);
-  env->SetProtoMethod(tmpl, "fd_readdir", WASI::FdReaddir);
-  env->SetProtoMethod(tmpl, "fd_renumber", WASI::FdRenumber);
-  env->SetProtoMethod(tmpl, "fd_seek", WASI::FdSeek);
-  env->SetProtoMethod(tmpl, "fd_sync", WASI::FdSync);
-  env->SetProtoMethod(tmpl, "fd_tell", WASI::FdTell);
-  env->SetProtoMethod(tmpl, "fd_write", WASI::FdWrite);
-  env->SetProtoMethod(tmpl, "path_create_directory", WASI::PathCreateDirectory);
-  env->SetProtoMethod(tmpl, "path_filestat_get", WASI::PathFilestatGet);
-  env->SetProtoMethod(tmpl,
-                      "path_filestat_set_times",
-                      WASI::PathFilestatSetTimes);
-  env->SetProtoMethod(tmpl, "path_link", WASI::PathLink);
-  env->SetProtoMethod(tmpl, "path_open", WASI::PathOpen);
-  env->SetProtoMethod(tmpl, "path_readlink", WASI::PathReadlink);
-  env->SetProtoMethod(tmpl, "path_remove_directory", WASI::PathRemoveDirectory);
-  env->SetProtoMethod(tmpl, "path_rename", WASI::PathRename);
-  env->SetProtoMethod(tmpl, "path_symlink", WASI::PathSymlink);
-  env->SetProtoMethod(tmpl, "path_unlink_file", WASI::PathUnlinkFile);
-  env->SetProtoMethod(tmpl, "poll_oneoff", WASI::PollOneoff);
-  env->SetProtoMethod(tmpl, "proc_exit", WASI::ProcExit);
-  env->SetProtoMethod(tmpl, "proc_raise", WASI::ProcRaise);
-  env->SetProtoMethod(tmpl, "random_get", WASI::RandomGet);
-  env->SetProtoMethod(tmpl, "sched_yield", WASI::SchedYield);
-  env->SetProtoMethod(tmpl, "sock_recv", WASI::SockRecv);
-  env->SetProtoMethod(tmpl, "sock_send", WASI::SockSend);
-  env->SetProtoMethod(tmpl, "sock_shutdown", WASI::SockShutdown);
-
-  env->SetInstanceMethod(tmpl, "_setMemory", WASI::_SetMemory);
-
-  env->SetConstructorFunction(target, "WASI", tmpl);
+  SetProtoMethod(isolate, tmpl, "args_get", WASI::ArgsGet);
+  SetProtoMethod(isolate, tmpl, "args_sizes_get", WASI::ArgsSizesGet);
+  SetProtoMethod(isolate, tmpl, "clock_res_get", WASI::ClockResGet);
+  SetProtoMethod(isolate, tmpl, "clock_time_get", WASI::ClockTimeGet);
+  SetProtoMethod(isolate, tmpl, "environ_get", WASI::EnvironGet);
+  SetProtoMethod(isolate, tmpl, "environ_sizes_get", WASI::EnvironSizesGet);
+  SetProtoMethod(isolate, tmpl, "fd_advise", WASI::FdAdvise);
+  SetProtoMethod(isolate, tmpl, "fd_allocate", WASI::FdAllocate);
+  SetProtoMethod(isolate, tmpl, "fd_close", WASI::FdClose);
+  SetProtoMethod(isolate, tmpl, "fd_datasync", WASI::FdDatasync);
+  SetProtoMethod(isolate, tmpl, "fd_fdstat_get", WASI::FdFdstatGet);
+  SetProtoMethod(isolate, tmpl, "fd_fdstat_set_flags", WASI::FdFdstatSetFlags);
+  SetProtoMethod(
+      isolate, tmpl, "fd_fdstat_set_rights", WASI::FdFdstatSetRights);
+  SetProtoMethod(isolate, tmpl, "fd_filestat_get", WASI::FdFilestatGet);
+  SetProtoMethod(
+      isolate, tmpl, "fd_filestat_set_size", WASI::FdFilestatSetSize);
+  SetProtoMethod(
+      isolate, tmpl, "fd_filestat_set_times", WASI::FdFilestatSetTimes);
+  SetProtoMethod(isolate, tmpl, "fd_pread", WASI::FdPread);
+  SetProtoMethod(isolate, tmpl, "fd_prestat_get", WASI::FdPrestatGet);
+  SetProtoMethod(isolate, tmpl, "fd_prestat_dir_name", WASI::FdPrestatDirName);
+  SetProtoMethod(isolate, tmpl, "fd_pwrite", WASI::FdPwrite);
+  SetProtoMethod(isolate, tmpl, "fd_read", WASI::FdRead);
+  SetProtoMethod(isolate, tmpl, "fd_readdir", WASI::FdReaddir);
+  SetProtoMethod(isolate, tmpl, "fd_renumber", WASI::FdRenumber);
+  SetProtoMethod(isolate, tmpl, "fd_seek", WASI::FdSeek);
+  SetProtoMethod(isolate, tmpl, "fd_sync", WASI::FdSync);
+  SetProtoMethod(isolate, tmpl, "fd_tell", WASI::FdTell);
+  SetProtoMethod(isolate, tmpl, "fd_write", WASI::FdWrite);
+  SetProtoMethod(
+      isolate, tmpl, "path_create_directory", WASI::PathCreateDirectory);
+  SetProtoMethod(isolate, tmpl, "path_filestat_get", WASI::PathFilestatGet);
+  SetProtoMethod(
+      isolate, tmpl, "path_filestat_set_times", WASI::PathFilestatSetTimes);
+  SetProtoMethod(isolate, tmpl, "path_link", WASI::PathLink);
+  SetProtoMethod(isolate, tmpl, "path_open", WASI::PathOpen);
+  SetProtoMethod(isolate, tmpl, "path_readlink", WASI::PathReadlink);
+  SetProtoMethod(
+      isolate, tmpl, "path_remove_directory", WASI::PathRemoveDirectory);
+  SetProtoMethod(isolate, tmpl, "path_rename", WASI::PathRename);
+  SetProtoMethod(isolate, tmpl, "path_symlink", WASI::PathSymlink);
+  SetProtoMethod(isolate, tmpl, "path_unlink_file", WASI::PathUnlinkFile);
+  SetProtoMethod(isolate, tmpl, "poll_oneoff", WASI::PollOneoff);
+  SetProtoMethod(isolate, tmpl, "proc_exit", WASI::ProcExit);
+  SetProtoMethod(isolate, tmpl, "proc_raise", WASI::ProcRaise);
+  SetProtoMethod(isolate, tmpl, "random_get", WASI::RandomGet);
+  SetProtoMethod(isolate, tmpl, "sched_yield", WASI::SchedYield);
+  SetProtoMethod(isolate, tmpl, "sock_recv", WASI::SockRecv);
+  SetProtoMethod(isolate, tmpl, "sock_send", WASI::SockSend);
+  SetProtoMethod(isolate, tmpl, "sock_shutdown", WASI::SockShutdown);
+
+  SetInstanceMethod(isolate, tmpl, "_setMemory", WASI::_SetMemory);
+
+  SetConstructorFunction(context, target, "WASI", tmpl);
 }
 
 
diff --git a/src/node_watchdog.cc b/src/node_watchdog.cc
index 31c8f744a3b320..7062d4aa661abb 100644
--- a/src/node_watchdog.cc
+++ b/src/node_watchdog.cc
@@ -34,6 +34,7 @@ namespace node {
 using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::Value;
@@ -123,15 +124,17 @@ SignalPropagation SigintWatchdog::HandleSigint() {
 }
 
 void TraceSigintWatchdog::Init(Environment* env, Local<Object> target) {
-  Local<FunctionTemplate> constructor = env->NewFunctionTemplate(New);
+  Isolate* isolate = env->isolate();
+  Local<FunctionTemplate> constructor = NewFunctionTemplate(isolate, New);
   constructor->InstanceTemplate()->SetInternalFieldCount(
       TraceSigintWatchdog::kInternalFieldCount);
   constructor->Inherit(HandleWrap::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(constructor, "start", Start);
-  env->SetProtoMethod(constructor, "stop", Stop);
+  SetProtoMethod(isolate, constructor, "start", Start);
+  SetProtoMethod(isolate, constructor, "stop", Stop);
 
-  env->SetConstructorFunction(target, "TraceSigintWatchdog", constructor);
+  SetConstructorFunction(
+      env->context(), target, "TraceSigintWatchdog", constructor);
 }
 
 void TraceSigintWatchdog::New(const FunctionCallbackInfo<Value>& args) {
diff --git a/src/node_worker.cc b/src/node_worker.cc
index 86493374af13b4..0d2cf9bb81f9ea 100644
--- a/src/node_worker.cc
+++ b/src/node_worker.cc
@@ -830,65 +830,66 @@ void InitWorker(Local<Object> target,
                 Local<Context> context,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
   {
-    Local<FunctionTemplate> w = env->NewFunctionTemplate(Worker::New);
+    Local<FunctionTemplate> w = NewFunctionTemplate(isolate, Worker::New);
 
     w->InstanceTemplate()->SetInternalFieldCount(
         Worker::kInternalFieldCount);
     w->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
-    env->SetProtoMethod(w, "startThread", Worker::StartThread);
-    env->SetProtoMethod(w, "stopThread", Worker::StopThread);
-    env->SetProtoMethod(w, "hasRef", Worker::HasRef);
-    env->SetProtoMethod(w, "ref", Worker::Ref);
-    env->SetProtoMethod(w, "unref", Worker::Unref);
-    env->SetProtoMethod(w, "getResourceLimits", Worker::GetResourceLimits);
-    env->SetProtoMethod(w, "takeHeapSnapshot", Worker::TakeHeapSnapshot);
-    env->SetProtoMethod(w, "loopIdleTime", Worker::LoopIdleTime);
-    env->SetProtoMethod(w, "loopStartTime", Worker::LoopStartTime);
-
-    env->SetConstructorFunction(target, "Worker", w);
+    SetProtoMethod(isolate, w, "startThread", Worker::StartThread);
+    SetProtoMethod(isolate, w, "stopThread", Worker::StopThread);
+    SetProtoMethod(isolate, w, "hasRef", Worker::HasRef);
+    SetProtoMethod(isolate, w, "ref", Worker::Ref);
+    SetProtoMethod(isolate, w, "unref", Worker::Unref);
+    SetProtoMethod(isolate, w, "getResourceLimits", Worker::GetResourceLimits);
+    SetProtoMethod(isolate, w, "takeHeapSnapshot", Worker::TakeHeapSnapshot);
+    SetProtoMethod(isolate, w, "loopIdleTime", Worker::LoopIdleTime);
+    SetProtoMethod(isolate, w, "loopStartTime", Worker::LoopStartTime);
+
+    SetConstructorFunction(context, target, "Worker", w);
   }
 
   {
-    Local<FunctionTemplate> wst = FunctionTemplate::New(env->isolate());
+    Local<FunctionTemplate> wst = NewFunctionTemplate(isolate, nullptr);
 
     wst->InstanceTemplate()->SetInternalFieldCount(
         WorkerHeapSnapshotTaker::kInternalFieldCount);
     wst->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
     Local<String> wst_string =
-        FIXED_ONE_BYTE_STRING(env->isolate(), "WorkerHeapSnapshotTaker");
+        FIXED_ONE_BYTE_STRING(isolate, "WorkerHeapSnapshotTaker");
     wst->SetClassName(wst_string);
     env->set_worker_heap_snapshot_taker_template(wst->InstanceTemplate());
   }
 
-  env->SetMethod(target, "getEnvMessagePort", GetEnvMessagePort);
+  SetMethod(context, target, "getEnvMessagePort", GetEnvMessagePort);
 
   target
       ->Set(env->context(),
             env->thread_id_string(),
-            Number::New(env->isolate(), static_cast<double>(env->thread_id())))
+            Number::New(isolate, static_cast<double>(env->thread_id())))
       .Check();
 
   target
       ->Set(env->context(),
-            FIXED_ONE_BYTE_STRING(env->isolate(), "isMainThread"),
-            Boolean::New(env->isolate(), env->is_main_thread()))
+            FIXED_ONE_BYTE_STRING(isolate, "isMainThread"),
+            Boolean::New(isolate, env->is_main_thread()))
       .Check();
 
   target
       ->Set(env->context(),
-            FIXED_ONE_BYTE_STRING(env->isolate(), "ownsProcessState"),
-            Boolean::New(env->isolate(), env->owns_process_state()))
+            FIXED_ONE_BYTE_STRING(isolate, "ownsProcessState"),
+            Boolean::New(isolate, env->owns_process_state()))
       .Check();
 
   if (!env->is_main_thread()) {
     target
         ->Set(env->context(),
-              FIXED_ONE_BYTE_STRING(env->isolate(), "resourceLimits"),
-              env->worker_context()->GetResourceLimits(env->isolate()))
+              FIXED_ONE_BYTE_STRING(isolate, "resourceLimits"),
+              env->worker_context()->GetResourceLimits(isolate))
         .Check();
   }
 
diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index 5930ffd7a8ae8e..e2433d887b421a 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -52,6 +52,7 @@ using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::Uint32Array;
@@ -1256,21 +1257,22 @@ CompressionError BrotliDecoderContext::GetErrorInfo() const {
 template <typename Stream>
 struct MakeClass {
   static void Make(Environment* env, Local<Object> target, const char* name) {
-    Local<FunctionTemplate> z = env->NewFunctionTemplate(Stream::New);
+    Isolate* isolate = env->isolate();
+    Local<FunctionTemplate> z = NewFunctionTemplate(isolate, Stream::New);
 
     z->InstanceTemplate()->SetInternalFieldCount(
         Stream::kInternalFieldCount);
     z->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
-    env->SetProtoMethod(z, "write", Stream::template Write<true>);
-    env->SetProtoMethod(z, "writeSync", Stream::template Write<false>);
-    env->SetProtoMethod(z, "close", Stream::Close);
+    SetProtoMethod(isolate, z, "write", Stream::template Write<true>);
+    SetProtoMethod(isolate, z, "writeSync", Stream::template Write<false>);
+    SetProtoMethod(isolate, z, "close", Stream::Close);
 
-    env->SetProtoMethod(z, "init", Stream::Init);
-    env->SetProtoMethod(z, "params", Stream::Params);
-    env->SetProtoMethod(z, "reset", Stream::Reset);
+    SetProtoMethod(isolate, z, "init", Stream::Init);
+    SetProtoMethod(isolate, z, "params", Stream::Params);
+    SetProtoMethod(isolate, z, "reset", Stream::Reset);
 
-    env->SetConstructorFunction(target, name, z);
+    SetConstructorFunction(env->context(), target, name, z);
   }
 
   static void Make(ExternalReferenceRegistry* registry) {
diff --git a/src/pipe_wrap.cc b/src/pipe_wrap.cc
index 85daf4a1e618ae..4f1bfda569f910 100644
--- a/src/pipe_wrap.cc
+++ b/src/pipe_wrap.cc
@@ -41,6 +41,7 @@ using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::Int32;
+using v8::Isolate;
 using v8::Local;
 using v8::MaybeLocal;
 using v8::Object;
@@ -67,31 +68,32 @@ void PipeWrap::Initialize(Local<Object> target,
                           Local<Context> context,
                           void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->InstanceTemplate()
     ->SetInternalFieldCount(StreamBase::kInternalFieldCount);
 
   t->Inherit(LibuvStreamWrap::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "bind", Bind);
-  env->SetProtoMethod(t, "listen", Listen);
-  env->SetProtoMethod(t, "connect", Connect);
-  env->SetProtoMethod(t, "open", Open);
+  SetProtoMethod(isolate, t, "bind", Bind);
+  SetProtoMethod(isolate, t, "listen", Listen);
+  SetProtoMethod(isolate, t, "connect", Connect);
+  SetProtoMethod(isolate, t, "open", Open);
 
 #ifdef _WIN32
-  env->SetProtoMethod(t, "setPendingInstances", SetPendingInstances);
+  SetProtoMethod(isolate, t, "setPendingInstances", SetPendingInstances);
 #endif
 
-  env->SetProtoMethod(t, "fchmod", Fchmod);
+  SetProtoMethod(isolate, t, "fchmod", Fchmod);
 
-  env->SetConstructorFunction(target, "Pipe", t);
+  SetConstructorFunction(context, target, "Pipe", t);
   env->set_pipe_constructor_template(t);
 
   // Create FunctionTemplate for PipeConnectWrap.
   auto cwt = BaseObject::MakeLazilyInitializedJSTemplate(env);
   cwt->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetConstructorFunction(target, "PipeConnectWrap", cwt);
+  SetConstructorFunction(context, target, "PipeConnectWrap", cwt);
 
   // Define constants
   Local<Object> constants = Object::New(env->isolate());
diff --git a/src/process_wrap.cc b/src/process_wrap.cc
index 6905cacb1c8193..3a55048ef79a0e 100644
--- a/src/process_wrap.cc
+++ b/src/process_wrap.cc
@@ -36,6 +36,7 @@ using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Int32;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::Number;
 using v8::Object;
@@ -51,16 +52,17 @@ class ProcessWrap : public HandleWrap {
                          Local<Context> context,
                          void* priv) {
     Environment* env = Environment::GetCurrent(context);
-    Local<FunctionTemplate> constructor = env->NewFunctionTemplate(New);
+    Isolate* isolate = env->isolate();
+    Local<FunctionTemplate> constructor = NewFunctionTemplate(isolate, New);
     constructor->InstanceTemplate()->SetInternalFieldCount(
         ProcessWrap::kInternalFieldCount);
 
     constructor->Inherit(HandleWrap::GetConstructorTemplate(env));
 
-    env->SetProtoMethod(constructor, "spawn", Spawn);
-    env->SetProtoMethod(constructor, "kill", Kill);
+    SetProtoMethod(isolate, constructor, "spawn", Spawn);
+    SetProtoMethod(isolate, constructor, "kill", Kill);
 
-    env->SetConstructorFunction(target, "Process", constructor);
+    SetConstructorFunction(context, target, "Process", constructor);
   }
 
   SET_NO_MEMORY_INFO()
diff --git a/src/signal_wrap.cc b/src/signal_wrap.cc
index df7f94eeec8451..d5dfdd51da656a 100644
--- a/src/signal_wrap.cc
+++ b/src/signal_wrap.cc
@@ -34,6 +34,7 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::Value;
@@ -52,15 +53,16 @@ class SignalWrap : public HandleWrap {
                          Local<Context> context,
                          void* priv) {
     Environment* env = Environment::GetCurrent(context);
-    Local<FunctionTemplate> constructor = env->NewFunctionTemplate(New);
+    Isolate* isolate = env->isolate();
+    Local<FunctionTemplate> constructor = NewFunctionTemplate(isolate, New);
     constructor->InstanceTemplate()->SetInternalFieldCount(
         SignalWrap::kInternalFieldCount);
     constructor->Inherit(HandleWrap::GetConstructorTemplate(env));
 
-    env->SetProtoMethod(constructor, "start", Start);
-    env->SetProtoMethod(constructor, "stop", Stop);
+    SetProtoMethod(isolate, constructor, "start", Start);
+    SetProtoMethod(isolate, constructor, "stop", Stop);
 
-    env->SetConstructorFunction(target, "Signal", constructor);
+    SetConstructorFunction(context, target, "Signal", constructor);
   }
 
   static void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/spawn_sync.cc b/src/spawn_sync.cc
index afd08519d7f897..2db7d82d32f13a 100644
--- a/src/spawn_sync.cc
+++ b/src/spawn_sync.cc
@@ -363,8 +363,7 @@ void SyncProcessRunner::Initialize(Local<Object> target,
                                    Local<Value> unused,
                                    Local<Context> context,
                                    void* priv) {
-  Environment* env = Environment::GetCurrent(context);
-  env->SetMethod(target, "spawn", Spawn);
+  SetMethod(context, target, "spawn", Spawn);
 }
 
 
diff --git a/src/stream_base.cc b/src/stream_base.cc
index 783e12a36c8e52..8701434c24fb26 100644
--- a/src/stream_base.cc
+++ b/src/stream_base.cc
@@ -400,21 +400,24 @@ void StreamBase::AddMethod(Environment* env,
                            Local<FunctionTemplate> t,
                            JSMethodFunction* stream_method,
                            Local<String> string) {
+  Isolate* isolate = env->isolate();
   Local<FunctionTemplate> templ =
-      env->NewFunctionTemplate(stream_method,
-                               signature,
-                               ConstructorBehavior::kThrow,
-                               SideEffectType::kHasNoSideEffect);
+      NewFunctionTemplate(isolate,
+                          stream_method,
+                          signature,
+                          ConstructorBehavior::kThrow,
+                          SideEffectType::kHasNoSideEffect);
   t->PrototypeTemplate()->SetAccessorProperty(
       string, templ, Local<FunctionTemplate>(), attributes);
 }
 
 void StreamBase::AddMethods(Environment* env, Local<FunctionTemplate> t) {
-  HandleScope scope(env->isolate());
+  Isolate* isolate = env->isolate();
+  HandleScope scope(isolate);
 
   enum PropertyAttribute attributes =
       static_cast<PropertyAttribute>(ReadOnly | DontDelete | DontEnum);
-  Local<Signature> sig = Signature::New(env->isolate(), t);
+  Local<Signature> sig = Signature::New(isolate, t);
 
   AddMethod(env, sig, attributes, t, GetFD, env->fd_string());
   AddMethod(
@@ -422,32 +425,32 @@ void StreamBase::AddMethods(Environment* env, Local<FunctionTemplate> t) {
   AddMethod(env, sig, attributes, t, GetBytesRead, env->bytes_read_string());
   AddMethod(
       env, sig, attributes, t, GetBytesWritten, env->bytes_written_string());
-  env->SetProtoMethod(t, "readStart", JSMethod<&StreamBase::ReadStartJS>);
-  env->SetProtoMethod(t, "readStop", JSMethod<&StreamBase::ReadStopJS>);
-  env->SetProtoMethod(t, "shutdown", JSMethod<&StreamBase::Shutdown>);
-  env->SetProtoMethod(t,
-                      "useUserBuffer",
-                      JSMethod<&StreamBase::UseUserBuffer>);
-  env->SetProtoMethod(t, "writev", JSMethod<&StreamBase::Writev>);
-  env->SetProtoMethod(t, "writeBuffer", JSMethod<&StreamBase::WriteBuffer>);
-  env->SetProtoMethod(
-      t, "writeAsciiString", JSMethod<&StreamBase::WriteString<ASCII>>);
-  env->SetProtoMethod(
-      t, "writeUtf8String", JSMethod<&StreamBase::WriteString<UTF8>>);
-  env->SetProtoMethod(
-      t, "writeUcs2String", JSMethod<&StreamBase::WriteString<UCS2>>);
-  env->SetProtoMethod(
-      t, "writeLatin1String", JSMethod<&StreamBase::WriteString<LATIN1>>);
-  t->PrototypeTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(),
-                                                    "isStreamBase"),
-                              True(env->isolate()));
+  SetProtoMethod(isolate, t, "readStart", JSMethod<&StreamBase::ReadStartJS>);
+  SetProtoMethod(isolate, t, "readStop", JSMethod<&StreamBase::ReadStopJS>);
+  SetProtoMethod(isolate, t, "shutdown", JSMethod<&StreamBase::Shutdown>);
+  SetProtoMethod(
+      isolate, t, "useUserBuffer", JSMethod<&StreamBase::UseUserBuffer>);
+  SetProtoMethod(isolate, t, "writev", JSMethod<&StreamBase::Writev>);
+  SetProtoMethod(isolate, t, "writeBuffer", JSMethod<&StreamBase::WriteBuffer>);
+  SetProtoMethod(isolate,
+                 t,
+                 "writeAsciiString",
+                 JSMethod<&StreamBase::WriteString<ASCII>>);
+  SetProtoMethod(
+      isolate, t, "writeUtf8String", JSMethod<&StreamBase::WriteString<UTF8>>);
+  SetProtoMethod(
+      isolate, t, "writeUcs2String", JSMethod<&StreamBase::WriteString<UCS2>>);
+  SetProtoMethod(isolate,
+                 t,
+                 "writeLatin1String",
+                 JSMethod<&StreamBase::WriteString<LATIN1>>);
+  t->PrototypeTemplate()->Set(FIXED_ONE_BYTE_STRING(isolate, "isStreamBase"),
+                              True(isolate));
   t->PrototypeTemplate()->SetAccessor(
-      FIXED_ONE_BYTE_STRING(env->isolate(), "onread"),
-      BaseObject::InternalFieldGet<
-          StreamBase::kOnReadFunctionField>,
-      BaseObject::InternalFieldSet<
-          StreamBase::kOnReadFunctionField,
-          &Value::IsFunction>);
+      FIXED_ONE_BYTE_STRING(isolate, "onread"),
+      BaseObject::InternalFieldGet<StreamBase::kOnReadFunctionField>,
+      BaseObject::InternalFieldSet<StreamBase::kOnReadFunctionField,
+                                   &Value::IsFunction>);
 }
 
 void StreamBase::RegisterExternalReferences(
diff --git a/src/stream_pipe.cc b/src/stream_pipe.cc
index 93b7ffeca9cd53..7d4be978a11c4c 100644
--- a/src/stream_pipe.cc
+++ b/src/stream_pipe.cc
@@ -11,6 +11,7 @@ using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
+using v8::Isolate;
 using v8::Just;
 using v8::Local;
 using v8::Maybe;
@@ -313,17 +314,18 @@ void InitializeStreamPipe(Local<Object> target,
                           Local<Context> context,
                           void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
   // Create FunctionTemplate for FileHandle::CloseReq
-  Local<FunctionTemplate> pipe = env->NewFunctionTemplate(StreamPipe::New);
-  env->SetProtoMethod(pipe, "unpipe", StreamPipe::Unpipe);
-  env->SetProtoMethod(pipe, "start", StreamPipe::Start);
-  env->SetProtoMethod(pipe, "isClosed", StreamPipe::IsClosed);
-  env->SetProtoMethod(pipe, "pendingWrites", StreamPipe::PendingWrites);
+  Local<FunctionTemplate> pipe = NewFunctionTemplate(isolate, StreamPipe::New);
+  SetProtoMethod(isolate, pipe, "unpipe", StreamPipe::Unpipe);
+  SetProtoMethod(isolate, pipe, "start", StreamPipe::Start);
+  SetProtoMethod(isolate, pipe, "isClosed", StreamPipe::IsClosed);
+  SetProtoMethod(isolate, pipe, "pendingWrites", StreamPipe::PendingWrites);
   pipe->Inherit(AsyncWrap::GetConstructorTemplate(env));
   pipe->InstanceTemplate()->SetInternalFieldCount(
       StreamPipe::kInternalFieldCount);
-  env->SetConstructorFunction(target, "StreamPipe", pipe);
+  SetConstructorFunction(context, target, "StreamPipe", pipe);
 }
 
 }  // anonymous namespace
diff --git a/src/stream_wrap.cc b/src/stream_wrap.cc
index d0c5664adcd897..88f0bce66adfcc 100644
--- a/src/stream_wrap.cc
+++ b/src/stream_wrap.cc
@@ -46,6 +46,7 @@ using v8::EscapableHandleScope;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
+using v8::Isolate;
 using v8::JustVoid;
 using v8::Local;
 using v8::Maybe;
@@ -67,9 +68,10 @@ void LibuvStreamWrap::Initialize(Local<Object> target,
                                  Local<Context> context,
                                  void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
   Local<FunctionTemplate> sw =
-      FunctionTemplate::New(env->isolate(), IsConstructCallCallback);
+      NewFunctionTemplate(isolate, IsConstructCallCallback);
   sw->InstanceTemplate()->SetInternalFieldCount(StreamReq::kInternalFieldCount);
 
   // we need to set handle and callback to null,
@@ -79,33 +81,34 @@ void LibuvStreamWrap::Initialize(Local<Object> target,
   // - oncomplete
   // - callback
   // - handle
-  sw->InstanceTemplate()->Set(
-      env->oncomplete_string(),
-      v8::Null(env->isolate()));
-  sw->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "callback"),
-      v8::Null(env->isolate()));
-  sw->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "handle"),
-      v8::Null(env->isolate()));
+  sw->InstanceTemplate()->Set(env->oncomplete_string(), v8::Null(isolate));
+  sw->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(isolate, "callback"),
+                              v8::Null(isolate));
+  sw->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(isolate, "handle"),
+                              v8::Null(isolate));
 
   sw->Inherit(AsyncWrap::GetConstructorTemplate(env));
 
-  env->SetConstructorFunction(target, "ShutdownWrap", sw);
+  SetConstructorFunction(context, target, "ShutdownWrap", sw);
   env->set_shutdown_wrap_template(sw->InstanceTemplate());
 
   Local<FunctionTemplate> ww =
-      FunctionTemplate::New(env->isolate(), IsConstructCallCallback);
+      FunctionTemplate::New(isolate, IsConstructCallCallback);
   ww->InstanceTemplate()->SetInternalFieldCount(
       StreamReq::kInternalFieldCount);
   ww->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetConstructorFunction(target, "WriteWrap", ww);
+  SetConstructorFunction(context, target, "WriteWrap", ww);
   env->set_write_wrap_template(ww->InstanceTemplate());
 
   NODE_DEFINE_CONSTANT(target, kReadBytesOrError);
   NODE_DEFINE_CONSTANT(target, kArrayBufferOffset);
   NODE_DEFINE_CONSTANT(target, kBytesWritten);
   NODE_DEFINE_CONSTANT(target, kLastWriteWasAsync);
-  target->Set(context, FIXED_ONE_BYTE_STRING(env->isolate(), "streamBaseState"),
-              env->stream_base_state().GetJSArray()).Check();
+  target
+      ->Set(context,
+            FIXED_ONE_BYTE_STRING(isolate, "streamBaseState"),
+            env->stream_base_state().GetJSArray())
+      .Check();
 }
 
 void LibuvStreamWrap::RegisterExternalReferences(
@@ -134,23 +137,23 @@ Local<FunctionTemplate> LibuvStreamWrap::GetConstructorTemplate(
     Environment* env) {
   Local<FunctionTemplate> tmpl = env->libuv_stream_wrap_ctor_template();
   if (tmpl.IsEmpty()) {
-    tmpl = env->NewFunctionTemplate(nullptr);
-    tmpl->SetClassName(
-        FIXED_ONE_BYTE_STRING(env->isolate(), "LibuvStreamWrap"));
+    Isolate* isolate = env->isolate();
+    tmpl = NewFunctionTemplate(isolate, nullptr);
+    tmpl->SetClassName(FIXED_ONE_BYTE_STRING(isolate, "LibuvStreamWrap"));
     tmpl->Inherit(HandleWrap::GetConstructorTemplate(env));
     tmpl->InstanceTemplate()->SetInternalFieldCount(
         StreamBase::kInternalFieldCount);
     Local<FunctionTemplate> get_write_queue_size =
-        FunctionTemplate::New(env->isolate(),
+        FunctionTemplate::New(isolate,
                               GetWriteQueueSize,
                               Local<Value>(),
-                              Signature::New(env->isolate(), tmpl));
+                              Signature::New(isolate, tmpl));
     tmpl->PrototypeTemplate()->SetAccessorProperty(
         env->write_queue_size_string(),
         get_write_queue_size,
         Local<FunctionTemplate>(),
         static_cast<PropertyAttribute>(ReadOnly | DontDelete));
-    env->SetProtoMethod(tmpl, "setBlocking", SetBlocking);
+    SetProtoMethod(isolate, tmpl, "setBlocking", SetBlocking);
     StreamBase::AddMethods(env, tmpl);
     env->set_libuv_stream_wrap_ctor_template(tmpl);
   }
diff --git a/src/string_decoder.cc b/src/string_decoder.cc
index a915f5744f3b00..b447474c09f583 100644
--- a/src/string_decoder.cc
+++ b/src/string_decoder.cc
@@ -328,8 +328,8 @@ void InitializeStringDecoder(Local<Object> target,
               FIXED_ONE_BYTE_STRING(isolate, "kSize"),
               Integer::New(isolate, sizeof(StringDecoder))).Check();
 
-  env->SetMethod(target, "decode", DecodeData);
-  env->SetMethod(target, "flush", FlushData);
+  SetMethod(context, target, "decode", DecodeData);
+  SetMethod(context, target, "flush", FlushData);
 }
 
 }  // anonymous namespace
diff --git a/src/tcp_wrap.cc b/src/tcp_wrap.cc
index 0fcc12d649eac4..ca4e77757e521b 100644
--- a/src/tcp_wrap.cc
+++ b/src/tcp_wrap.cc
@@ -45,6 +45,7 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::Int32;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::MaybeLocal;
 using v8::Object;
@@ -73,8 +74,9 @@ void TCPWrap::Initialize(Local<Object> target,
                          Local<Context> context,
                          void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->InstanceTemplate()->SetInternalFieldCount(StreamBase::kInternalFieldCount);
 
   // Init properties
@@ -85,32 +87,36 @@ void TCPWrap::Initialize(Local<Object> target,
 
   t->Inherit(LibuvStreamWrap::GetConstructorTemplate(env));
 
-  env->SetProtoMethod(t, "open", Open);
-  env->SetProtoMethod(t, "bind", Bind);
-  env->SetProtoMethod(t, "listen", Listen);
-  env->SetProtoMethod(t, "connect", Connect);
-  env->SetProtoMethod(t, "bind6", Bind6);
-  env->SetProtoMethod(t, "connect6", Connect6);
-  env->SetProtoMethod(t, "getsockname",
-                      GetSockOrPeerName<TCPWrap, uv_tcp_getsockname>);
-  env->SetProtoMethod(t, "getpeername",
-                      GetSockOrPeerName<TCPWrap, uv_tcp_getpeername>);
-  env->SetProtoMethod(t, "setNoDelay", SetNoDelay);
-  env->SetProtoMethod(t, "setKeepAlive", SetKeepAlive);
-  env->SetProtoMethod(t, "reset", Reset);
+  SetProtoMethod(isolate, t, "open", Open);
+  SetProtoMethod(isolate, t, "bind", Bind);
+  SetProtoMethod(isolate, t, "listen", Listen);
+  SetProtoMethod(isolate, t, "connect", Connect);
+  SetProtoMethod(isolate, t, "bind6", Bind6);
+  SetProtoMethod(isolate, t, "connect6", Connect6);
+  SetProtoMethod(isolate,
+                 t,
+                 "getsockname",
+                 GetSockOrPeerName<TCPWrap, uv_tcp_getsockname>);
+  SetProtoMethod(isolate,
+                 t,
+                 "getpeername",
+                 GetSockOrPeerName<TCPWrap, uv_tcp_getpeername>);
+  SetProtoMethod(isolate, t, "setNoDelay", SetNoDelay);
+  SetProtoMethod(isolate, t, "setKeepAlive", SetKeepAlive);
+  SetProtoMethod(isolate, t, "reset", Reset);
 
 #ifdef _WIN32
-  env->SetProtoMethod(t, "setSimultaneousAccepts", SetSimultaneousAccepts);
+  SetProtoMethod(isolate, t, "setSimultaneousAccepts", SetSimultaneousAccepts);
 #endif
 
-  env->SetConstructorFunction(target, "TCP", t);
+  SetConstructorFunction(context, target, "TCP", t);
   env->set_tcp_constructor_template(t);
 
   // Create FunctionTemplate for TCPConnectWrap.
   Local<FunctionTemplate> cwt =
       BaseObject::MakeLazilyInitializedJSTemplate(env);
   cwt->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetConstructorFunction(target, "TCPConnectWrap", cwt);
+  SetConstructorFunction(context, target, "TCPConnectWrap", cwt);
 
   // Define constants
   Local<Object> constants = Object::New(env->isolate());
diff --git a/src/timers.cc b/src/timers.cc
index 5014f2c66a5d24..2ecfd25f7eeb8b 100644
--- a/src/timers.cc
+++ b/src/timers.cc
@@ -48,15 +48,17 @@ void Initialize(Local<Object> target,
                        void* priv) {
   Environment* env = Environment::GetCurrent(context);
 
-  env->SetMethod(target, "getLibuvNow", GetLibuvNow);
-  env->SetMethod(target, "setupTimers", SetupTimers);
-  env->SetMethod(target, "scheduleTimer", ScheduleTimer);
-  env->SetMethod(target, "toggleTimerRef", ToggleTimerRef);
-  env->SetMethod(target, "toggleImmediateRef", ToggleImmediateRef);
+  SetMethod(context, target, "getLibuvNow", GetLibuvNow);
+  SetMethod(context, target, "setupTimers", SetupTimers);
+  SetMethod(context, target, "scheduleTimer", ScheduleTimer);
+  SetMethod(context, target, "toggleTimerRef", ToggleTimerRef);
+  SetMethod(context, target, "toggleImmediateRef", ToggleImmediateRef);
 
-  target->Set(env->context(),
-              FIXED_ONE_BYTE_STRING(env->isolate(), "immediateInfo"),
-              env->immediate_info()->fields().GetJSArray()).Check();
+  target
+      ->Set(context,
+            FIXED_ONE_BYTE_STRING(env->isolate(), "immediateInfo"),
+            env->immediate_info()->fields().GetJSArray())
+      .Check();
 }
 }  // anonymous namespace
 void RegisterTimerExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/src/tty_wrap.cc b/src/tty_wrap.cc
index 1c749a9741c312..0a7c1467d24895 100644
--- a/src/tty_wrap.cc
+++ b/src/tty_wrap.cc
@@ -36,6 +36,7 @@ using v8::Context;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::String;
@@ -53,22 +54,24 @@ void TTYWrap::Initialize(Local<Object> target,
                          Local<Context> context,
                          void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
   Local<String> ttyString = FIXED_ONE_BYTE_STRING(env->isolate(), "TTY");
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->SetClassName(ttyString);
   t->InstanceTemplate()->SetInternalFieldCount(StreamBase::kInternalFieldCount);
   t->Inherit(LibuvStreamWrap::GetConstructorTemplate(env));
 
-  env->SetProtoMethodNoSideEffect(t, "getWindowSize", TTYWrap::GetWindowSize);
-  env->SetProtoMethod(t, "setRawMode", SetRawMode);
+  SetProtoMethodNoSideEffect(
+      isolate, t, "getWindowSize", TTYWrap::GetWindowSize);
+  SetProtoMethod(isolate, t, "setRawMode", SetRawMode);
 
-  env->SetMethodNoSideEffect(target, "isTTY", IsTTY);
+  SetMethodNoSideEffect(context, target, "isTTY", IsTTY);
 
   Local<Value> func;
-  if (t->GetFunction(env->context()).ToLocal(&func) &&
-      target->Set(env->context(), ttyString, func).IsJust()) {
+  if (t->GetFunction(context).ToLocal(&func) &&
+      target->Set(context, ttyString, func).IsJust()) {
     env->set_tty_constructor_template(t);
   }
 }
diff --git a/src/udp_wrap.cc b/src/udp_wrap.cc
index 127a1a6e5d8fe7..a6911e2e921b98 100644
--- a/src/udp_wrap.cc
+++ b/src/udp_wrap.cc
@@ -110,8 +110,8 @@ UDPWrapBase* UDPWrapBase::FromObject(Local<Object> obj) {
 }
 
 void UDPWrapBase::AddMethods(Environment* env, Local<FunctionTemplate> t) {
-  env->SetProtoMethod(t, "recvStart", RecvStart);
-  env->SetProtoMethod(t, "recvStop", RecvStop);
+  SetProtoMethod(env->isolate(), t, "recvStart", RecvStart);
+  SetProtoMethod(env->isolate(), t, "recvStop", RecvStop);
 }
 
 UDPWrap::UDPWrap(Environment* env, Local<Object> object)
@@ -134,21 +134,19 @@ void UDPWrap::Initialize(Local<Object> target,
                          Local<Context> context,
                          void* priv) {
   Environment* env = Environment::GetCurrent(context);
+  Isolate* isolate = env->isolate();
 
-  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
+  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
   t->InstanceTemplate()->SetInternalFieldCount(
       UDPWrapBase::kInternalFieldCount);
 
   enum PropertyAttribute attributes =
       static_cast<PropertyAttribute>(ReadOnly | DontDelete);
 
-  Local<Signature> signature = Signature::New(env->isolate(), t);
+  Local<Signature> signature = Signature::New(isolate, t);
 
   Local<FunctionTemplate> get_fd_templ =
-      FunctionTemplate::New(env->isolate(),
-                            UDPWrap::GetFD,
-                            Local<Value>(),
-                            signature);
+      FunctionTemplate::New(isolate, UDPWrap::GetFD, Local<Value>(), signature);
 
   t->PrototypeTemplate()->SetAccessorProperty(env->fd_string(),
                                               get_fd_templ,
@@ -156,44 +154,47 @@ void UDPWrap::Initialize(Local<Object> target,
                                               attributes);
 
   UDPWrapBase::AddMethods(env, t);
-  env->SetProtoMethod(t, "open", Open);
-  env->SetProtoMethod(t, "bind", Bind);
-  env->SetProtoMethod(t, "connect", Connect);
-  env->SetProtoMethod(t, "send", Send);
-  env->SetProtoMethod(t, "bind6", Bind6);
-  env->SetProtoMethod(t, "connect6", Connect6);
-  env->SetProtoMethod(t, "send6", Send6);
-  env->SetProtoMethod(t, "disconnect", Disconnect);
-  env->SetProtoMethod(t, "getpeername",
-                      GetSockOrPeerName<UDPWrap, uv_udp_getpeername>);
-  env->SetProtoMethod(t, "getsockname",
-                      GetSockOrPeerName<UDPWrap, uv_udp_getsockname>);
-  env->SetProtoMethod(t, "addMembership", AddMembership);
-  env->SetProtoMethod(t, "dropMembership", DropMembership);
-  env->SetProtoMethod(t, "addSourceSpecificMembership",
-                      AddSourceSpecificMembership);
-  env->SetProtoMethod(t, "dropSourceSpecificMembership",
-                      DropSourceSpecificMembership);
-  env->SetProtoMethod(t, "setMulticastInterface", SetMulticastInterface);
-  env->SetProtoMethod(t, "setMulticastTTL", SetMulticastTTL);
-  env->SetProtoMethod(t, "setMulticastLoopback", SetMulticastLoopback);
-  env->SetProtoMethod(t, "setBroadcast", SetBroadcast);
-  env->SetProtoMethod(t, "setTTL", SetTTL);
-  env->SetProtoMethod(t, "bufferSize", BufferSize);
+  SetProtoMethod(isolate, t, "open", Open);
+  SetProtoMethod(isolate, t, "bind", Bind);
+  SetProtoMethod(isolate, t, "connect", Connect);
+  SetProtoMethod(isolate, t, "send", Send);
+  SetProtoMethod(isolate, t, "bind6", Bind6);
+  SetProtoMethod(isolate, t, "connect6", Connect6);
+  SetProtoMethod(isolate, t, "send6", Send6);
+  SetProtoMethod(isolate, t, "disconnect", Disconnect);
+  SetProtoMethod(isolate,
+                 t,
+                 "getpeername",
+                 GetSockOrPeerName<UDPWrap, uv_udp_getpeername>);
+  SetProtoMethod(isolate,
+                 t,
+                 "getsockname",
+                 GetSockOrPeerName<UDPWrap, uv_udp_getsockname>);
+  SetProtoMethod(isolate, t, "addMembership", AddMembership);
+  SetProtoMethod(isolate, t, "dropMembership", DropMembership);
+  SetProtoMethod(
+      isolate, t, "addSourceSpecificMembership", AddSourceSpecificMembership);
+  SetProtoMethod(
+      isolate, t, "dropSourceSpecificMembership", DropSourceSpecificMembership);
+  SetProtoMethod(isolate, t, "setMulticastInterface", SetMulticastInterface);
+  SetProtoMethod(isolate, t, "setMulticastTTL", SetMulticastTTL);
+  SetProtoMethod(isolate, t, "setMulticastLoopback", SetMulticastLoopback);
+  SetProtoMethod(isolate, t, "setBroadcast", SetBroadcast);
+  SetProtoMethod(isolate, t, "setTTL", SetTTL);
+  SetProtoMethod(isolate, t, "bufferSize", BufferSize);
 
   t->Inherit(HandleWrap::GetConstructorTemplate(env));
 
-  env->SetConstructorFunction(target, "UDP", t);
-  env->set_udp_constructor_function(
-      t->GetFunction(env->context()).ToLocalChecked());
+  SetConstructorFunction(context, target, "UDP", t);
+  env->set_udp_constructor_function(t->GetFunction(context).ToLocalChecked());
 
   // Create FunctionTemplate for SendWrap
   Local<FunctionTemplate> swt =
       BaseObject::MakeLazilyInitializedJSTemplate(env);
   swt->Inherit(AsyncWrap::GetConstructorTemplate(env));
-  env->SetConstructorFunction(target, "SendWrap", swt);
+  SetConstructorFunction(context, target, "SendWrap", swt);
 
-  Local<Object> constants = Object::New(env->isolate());
+  Local<Object> constants = Object::New(isolate);
   NODE_DEFINE_CONSTANT(constants, UV_UDP_IPV6ONLY);
   NODE_DEFINE_CONSTANT(constants, UV_UDP_REUSEADDR);
   target->Set(context,
diff --git a/src/util.cc b/src/util.cc
index b881f9f9f88cee..6bbd9fd926f61a 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -317,4 +317,161 @@ std::string DiagnosticFilename::MakeFilename(
   return oss.str();
 }
 
+Local<v8::FunctionTemplate> NewFunctionTemplate(
+    v8::Isolate* isolate,
+    v8::FunctionCallback callback,
+    Local<v8::Signature> signature,
+    v8::ConstructorBehavior behavior,
+    v8::SideEffectType side_effect_type,
+    const v8::CFunction* c_function) {
+  return v8::FunctionTemplate::New(isolate,
+                                   callback,
+                                   Local<v8::Value>(),
+                                   signature,
+                                   0,
+                                   behavior,
+                                   side_effect_type,
+                                   c_function);
+}
+
+void SetMethod(Local<v8::Context> context,
+               Local<v8::Object> that,
+               const char* name,
+               v8::FunctionCallback callback) {
+  Isolate* isolate = context->GetIsolate();
+  Local<v8::Function> function =
+      NewFunctionTemplate(isolate,
+                          callback,
+                          Local<v8::Signature>(),
+                          v8::ConstructorBehavior::kThrow,
+                          v8::SideEffectType::kHasSideEffect)
+          ->GetFunction(context)
+          .ToLocalChecked();
+  // kInternalized strings are created in the old space.
+  const v8::NewStringType type = v8::NewStringType::kInternalized;
+  Local<v8::String> name_string =
+      v8::String::NewFromUtf8(isolate, name, type).ToLocalChecked();
+  that->Set(context, name_string, function).Check();
+  function->SetName(name_string);  // NODE_SET_METHOD() compatibility.
+}
+
+void SetFastMethod(Local<v8::Context> context,
+                   Local<v8::Object> that,
+                   const char* name,
+                   v8::FunctionCallback slow_callback,
+                   const v8::CFunction* c_function) {
+  Isolate* isolate = context->GetIsolate();
+  Local<v8::Function> function =
+      NewFunctionTemplate(isolate,
+                          slow_callback,
+                          Local<v8::Signature>(),
+                          v8::ConstructorBehavior::kThrow,
+                          v8::SideEffectType::kHasNoSideEffect,
+                          c_function)
+          ->GetFunction(context)
+          .ToLocalChecked();
+  const v8::NewStringType type = v8::NewStringType::kInternalized;
+  Local<v8::String> name_string =
+      v8::String::NewFromUtf8(isolate, name, type).ToLocalChecked();
+  that->Set(context, name_string, function).Check();
+}
+
+void SetMethodNoSideEffect(Local<v8::Context> context,
+                           Local<v8::Object> that,
+                           const char* name,
+                           v8::FunctionCallback callback) {
+  Isolate* isolate = context->GetIsolate();
+  Local<v8::Function> function =
+      NewFunctionTemplate(isolate,
+                          callback,
+                          Local<v8::Signature>(),
+                          v8::ConstructorBehavior::kThrow,
+                          v8::SideEffectType::kHasNoSideEffect)
+          ->GetFunction(context)
+          .ToLocalChecked();
+  // kInternalized strings are created in the old space.
+  const v8::NewStringType type = v8::NewStringType::kInternalized;
+  Local<v8::String> name_string =
+      v8::String::NewFromUtf8(isolate, name, type).ToLocalChecked();
+  that->Set(context, name_string, function).Check();
+  function->SetName(name_string);  // NODE_SET_METHOD() compatibility.
+}
+
+void SetProtoMethod(v8::Isolate* isolate,
+                    Local<v8::FunctionTemplate> that,
+                    const char* name,
+                    v8::FunctionCallback callback) {
+  Local<v8::Signature> signature = v8::Signature::New(isolate, that);
+  Local<v8::FunctionTemplate> t =
+      NewFunctionTemplate(isolate,
+                          callback,
+                          signature,
+                          v8::ConstructorBehavior::kThrow,
+                          v8::SideEffectType::kHasSideEffect);
+  // kInternalized strings are created in the old space.
+  const v8::NewStringType type = v8::NewStringType::kInternalized;
+  Local<v8::String> name_string =
+      v8::String::NewFromUtf8(isolate, name, type).ToLocalChecked();
+  that->PrototypeTemplate()->Set(name_string, t);
+  t->SetClassName(name_string);  // NODE_SET_PROTOTYPE_METHOD() compatibility.
+}
+
+void SetProtoMethodNoSideEffect(v8::Isolate* isolate,
+                                Local<v8::FunctionTemplate> that,
+                                const char* name,
+                                v8::FunctionCallback callback) {
+  Local<v8::Signature> signature = v8::Signature::New(isolate, that);
+  Local<v8::FunctionTemplate> t =
+      NewFunctionTemplate(isolate,
+                          callback,
+                          signature,
+                          v8::ConstructorBehavior::kThrow,
+                          v8::SideEffectType::kHasNoSideEffect);
+  // kInternalized strings are created in the old space.
+  const v8::NewStringType type = v8::NewStringType::kInternalized;
+  Local<v8::String> name_string =
+      v8::String::NewFromUtf8(isolate, name, type).ToLocalChecked();
+  that->PrototypeTemplate()->Set(name_string, t);
+  t->SetClassName(name_string);  // NODE_SET_PROTOTYPE_METHOD() compatibility.
+}
+
+void SetInstanceMethod(v8::Isolate* isolate,
+                       Local<v8::FunctionTemplate> that,
+                       const char* name,
+                       v8::FunctionCallback callback) {
+  Local<v8::Signature> signature = v8::Signature::New(isolate, that);
+  Local<v8::FunctionTemplate> t =
+      NewFunctionTemplate(isolate,
+                          callback,
+                          signature,
+                          v8::ConstructorBehavior::kThrow,
+                          v8::SideEffectType::kHasSideEffect);
+  // kInternalized strings are created in the old space.
+  const v8::NewStringType type = v8::NewStringType::kInternalized;
+  Local<v8::String> name_string =
+      v8::String::NewFromUtf8(isolate, name, type).ToLocalChecked();
+  that->InstanceTemplate()->Set(name_string, t);
+  t->SetClassName(name_string);
+}
+
+void SetConstructorFunction(Local<v8::Context> context,
+                            Local<v8::Object> that,
+                            const char* name,
+                            Local<v8::FunctionTemplate> tmpl,
+                            SetConstructorFunctionFlag flag) {
+  Isolate* isolate = context->GetIsolate();
+  SetConstructorFunction(
+      context, that, OneByteString(isolate, name), tmpl, flag);
+}
+
+void SetConstructorFunction(Local<v8::Context> context,
+                            Local<v8::Object> that,
+                            Local<v8::String> name,
+                            Local<v8::FunctionTemplate> tmpl,
+                            SetConstructorFunctionFlag flag) {
+  if (LIKELY(flag == SetConstructorFunctionFlag::SET_CLASS_NAME))
+    tmpl->SetClassName(name);
+  that->Set(context, name, tmpl->GetFunction(context).ToLocalChecked()).Check();
+}
+
 }  // namespace node
diff --git a/src/util.h b/src/util.h
index 4ca1004b0fd896..edf0de3202a223 100644
--- a/src/util.h
+++ b/src/util.h
@@ -860,6 +860,66 @@ std::unique_ptr<T> static_unique_pointer_cast(std::unique_ptr<U>&& ptr) {
 // Returns a non-zero code if it fails to open or read the file,
 // aborts if it fails to close the file.
 int ReadFileSync(std::string* result, const char* path);
+
+v8::Local<v8::FunctionTemplate> NewFunctionTemplate(
+    v8::Isolate* isolate,
+    v8::FunctionCallback callback,
+    v8::Local<v8::Signature> signature = v8::Local<v8::Signature>(),
+    v8::ConstructorBehavior behavior = v8::ConstructorBehavior::kAllow,
+    v8::SideEffectType side_effect = v8::SideEffectType::kHasSideEffect,
+    const v8::CFunction* c_function = nullptr);
+
+// Convenience methods for NewFunctionTemplate().
+void SetMethod(v8::Local<v8::Context> context,
+               v8::Local<v8::Object> that,
+               const char* name,
+               v8::FunctionCallback callback);
+
+void SetFastMethod(v8::Local<v8::Context> context,
+                   v8::Local<v8::Object> that,
+                   const char* name,
+                   v8::FunctionCallback slow_callback,
+                   const v8::CFunction* c_function);
+
+void SetProtoMethod(v8::Isolate* isolate,
+                    v8::Local<v8::FunctionTemplate> that,
+                    const char* name,
+                    v8::FunctionCallback callback);
+
+void SetInstanceMethod(v8::Isolate* isolate,
+                       v8::Local<v8::FunctionTemplate> that,
+                       const char* name,
+                       v8::FunctionCallback callback);
+
+// Safe variants denote the function has no side effects.
+void SetMethodNoSideEffect(v8::Local<v8::Context> context,
+                           v8::Local<v8::Object> that,
+                           const char* name,
+                           v8::FunctionCallback callback);
+void SetProtoMethodNoSideEffect(v8::Isolate* isolate,
+                                v8::Local<v8::FunctionTemplate> that,
+                                const char* name,
+                                v8::FunctionCallback callback);
+
+enum class SetConstructorFunctionFlag {
+  NONE,
+  SET_CLASS_NAME,
+};
+
+void SetConstructorFunction(v8::Local<v8::Context> context,
+                            v8::Local<v8::Object> that,
+                            const char* name,
+                            v8::Local<v8::FunctionTemplate> tmpl,
+                            SetConstructorFunctionFlag flag =
+                                SetConstructorFunctionFlag::SET_CLASS_NAME);
+
+void SetConstructorFunction(v8::Local<v8::Context> context,
+                            v8::Local<v8::Object> that,
+                            v8::Local<v8::String> name,
+                            v8::Local<v8::FunctionTemplate> tmpl,
+                            SetConstructorFunctionFlag flag =
+                                SetConstructorFunctionFlag::SET_CLASS_NAME);
+
 }  // namespace node
 
 #endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
diff --git a/src/uv.cc b/src/uv.cc
index 2b0c424587e420..81e80711df8fc5 100644
--- a/src/uv.cc
+++ b/src/uv.cc
@@ -109,10 +109,8 @@ void Initialize(Local<Object> target,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
   Isolate* isolate = env->isolate();
-  env->SetConstructorFunction(
-      target,
-      "errname",
-      env->NewFunctionTemplate(ErrName));
+  SetConstructorFunction(
+      context, target, "errname", NewFunctionTemplate(isolate, ErrName));
 
   // TODO(joyeecheung): This should be deprecated in user land in favor of
   // `util.getSystemErrorName(err)`.
@@ -128,7 +126,7 @@ void Initialize(Local<Object> target,
     target->DefineOwnProperty(context, name, value, attributes).Check();
   }
 
-  env->SetMethod(target, "getErrorMap", GetErrMap);
+  SetMethod(context, target, "getErrorMap", GetErrMap);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
diff --git a/test/parallel/test-env-newprotomethod-remove-unnecessary-prototypes.js b/test/parallel/test-env-newprotomethod-remove-unnecessary-prototypes.js
index deb7993a145825..22c0c8665d148b 100644
--- a/test/parallel/test-env-newprotomethod-remove-unnecessary-prototypes.js
+++ b/test/parallel/test-env-newprotomethod-remove-unnecessary-prototypes.js
@@ -3,7 +3,7 @@
 require('../common');
 
 // This test ensures that unnecessary prototypes are no longer
-// being generated by Environment::NewFunctionTemplate.
+// being generated by node::NewFunctionTemplate.
 
 const assert = require('assert');
 const { internalBinding } = require('internal/test/binding');