diff --git a/src/api/environment.cc b/src/api/environment.cc
index 77c20a4b6b9db4..9451a43d6a11d7 100644
--- a/src/api/environment.cc
+++ b/src/api/environment.cc
@@ -30,7 +30,7 @@ using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::HandleScope;
 using v8::Isolate;
-using v8::Just;
+using v8::JustVoid;
 using v8::Local;
 using v8::Maybe;
 using v8::MaybeLocal;
@@ -635,7 +635,7 @@ void ProtoThrower(const FunctionCallbackInfo<Value>& info) {
 
 // This runs at runtime, regardless of whether the context
 // is created from a snapshot.
-Maybe<bool> InitializeContextRuntime(Local<Context> context) {
+Maybe<void> InitializeContextRuntime(Local<Context> context) {
   Isolate* isolate = context->GetIsolate();
   HandleScope handle_scope(isolate);
 
@@ -653,7 +653,7 @@ Maybe<bool> InitializeContextRuntime(Local<Context> context) {
       Boolean::New(isolate, is_code_generation_from_strings_allowed));
 
   if (per_process::cli_options->disable_proto == "") {
-    return Just(true);
+    return JustVoid();
   }
 
   // Remove __proto__
@@ -669,14 +669,14 @@ Maybe<bool> InitializeContextRuntime(Local<Context> context) {
     if (!context->Global()
         ->Get(context, object_string)
         .ToLocal(&object_v)) {
-      return Nothing<bool>();
+      return Nothing<void>();
     }
 
     Local<Value> prototype_v;
     if (!object_v.As<Object>()
         ->Get(context, prototype_string)
         .ToLocal(&prototype_v)) {
-      return Nothing<bool>();
+      return Nothing<void>();
     }
 
     prototype = prototype_v.As<Object>();
@@ -689,13 +689,13 @@ Maybe<bool> InitializeContextRuntime(Local<Context> context) {
     if (prototype
         ->Delete(context, proto_string)
         .IsNothing()) {
-      return Nothing<bool>();
+      return Nothing<void>();
     }
   } else if (per_process::cli_options->disable_proto == "throw") {
     Local<Value> thrower;
     if (!Function::New(context, ProtoThrower)
         .ToLocal(&thrower)) {
-      return Nothing<bool>();
+      return Nothing<void>();
     }
 
     PropertyDescriptor descriptor(thrower, thrower);
@@ -704,17 +704,17 @@ Maybe<bool> InitializeContextRuntime(Local<Context> context) {
     if (prototype
         ->DefineProperty(context, proto_string, descriptor)
         .IsNothing()) {
-      return Nothing<bool>();
+      return Nothing<void>();
     }
   } else if (per_process::cli_options->disable_proto != "") {
     // Validated in ProcessGlobalArgs
     UNREACHABLE("invalid --disable-proto mode");
   }
 
-  return Just(true);
+  return JustVoid();
 }
 
-Maybe<bool> InitializeBaseContextForSnapshot(Local<Context> context) {
+Maybe<void> InitializeBaseContextForSnapshot(Local<Context> context) {
   Isolate* isolate = context->GetIsolate();
   HandleScope handle_scope(isolate);
 
@@ -728,18 +728,18 @@ Maybe<bool> InitializeBaseContextForSnapshot(Local<Context> context) {
 
     Local<Value> intl_v;
     if (!context->Global()->Get(context, intl_string).ToLocal(&intl_v)) {
-      return Nothing<bool>();
+      return Nothing<void>();
     }
 
     if (intl_v->IsObject() &&
         intl_v.As<Object>()->Delete(context, break_iter_string).IsNothing()) {
-      return Nothing<bool>();
+      return Nothing<void>();
     }
   }
-  return Just(true);
+  return JustVoid();
 }
 
-Maybe<bool> InitializeMainContextForSnapshot(Local<Context> context) {
+Maybe<void> InitializeMainContextForSnapshot(Local<Context> context) {
   Isolate* isolate = context->GetIsolate();
   HandleScope handle_scope(isolate);
 
@@ -750,12 +750,12 @@ Maybe<bool> InitializeMainContextForSnapshot(Local<Context> context) {
       ContextEmbedderIndex::kAllowCodeGenerationFromStrings, True(isolate));
 
   if (InitializeBaseContextForSnapshot(context).IsNothing()) {
-    return Nothing<bool>();
+    return Nothing<void>();
   }
   return InitializePrimordials(context);
 }
 
-Maybe<bool> InitializePrimordials(Local<Context> context) {
+Maybe<void> InitializePrimordials(Local<Context> context) {
   // Run per-context JS files.
   Isolate* isolate = context->GetIsolate();
   Context::Scope context_scope(context);
@@ -769,7 +769,7 @@ Maybe<bool> InitializePrimordials(Local<Context> context) {
   if (primordials->SetPrototype(context, Null(isolate)).IsNothing() ||
       !GetPerContextExports(context).ToLocal(&exports) ||
       exports->Set(context, primordials_string, primordials).IsNothing()) {
-    return Nothing<bool>();
+    return Nothing<void>();
   }
 
   static const char* context_files[] = {"internal/per_context/primordials",
@@ -793,17 +793,17 @@ Maybe<bool> InitializePrimordials(Local<Context> context) {
                 context, *module, arraysize(arguments), arguments, nullptr)
             .IsEmpty()) {
       // Execution failed during context creation.
-      return Nothing<bool>();
+      return Nothing<void>();
     }
   }
 
-  return Just(true);
+  return JustVoid();
 }
 
 // This initializes the main context (i.e. vm contexts are not included).
-Maybe<bool> InitializeContext(Local<Context> context) {
+Maybe<void> InitializeContext(Local<Context> context) {
   if (InitializeMainContextForSnapshot(context).IsNothing()) {
-    return Nothing<bool>();
+    return Nothing<void>();
   }
 
   return InitializeContextRuntime(context);
diff --git a/src/api/hooks.cc b/src/api/hooks.cc
index 65d39e6b9ff921..c23bc2d3c9a5b0 100644
--- a/src/api/hooks.cc
+++ b/src/api/hooks.cc
@@ -10,6 +10,7 @@ using v8::HandleScope;
 using v8::Integer;
 using v8::Isolate;
 using v8::Just;
+using v8::JustVoid;
 using v8::Local;
 using v8::Maybe;
 using v8::NewStringType;
@@ -30,7 +31,7 @@ void EmitBeforeExit(Environment* env) {
   USE(EmitProcessBeforeExit(env));
 }
 
-Maybe<bool> EmitProcessBeforeExit(Environment* env) {
+Maybe<void> EmitProcessBeforeExit(Environment* env) {
   TRACE_EVENT0(TRACING_CATEGORY_NODE1(environment), "BeforeExit");
   if (!env->destroy_async_id_list()->empty())
     AsyncWrap::DestroyAsyncIdsCallback(env);
@@ -40,14 +41,14 @@ Maybe<bool> EmitProcessBeforeExit(Environment* env) {
   Context::Scope context_scope(env->context());
 
   if (!env->can_call_into_js()) {
-    return Nothing<bool>();
+    return Nothing<void>();
   }
 
   Local<Integer> exit_code = Integer::New(
       isolate, static_cast<int32_t>(env->exit_code(ExitCode::kNoFailure)));
 
-  return ProcessEmit(env, "beforeExit", exit_code).IsEmpty() ?
-      Nothing<bool>() : Just(true);
+  return ProcessEmit(env, "beforeExit", exit_code).IsEmpty() ? Nothing<void>()
+                                                             : JustVoid();
 }
 
 static ExitCode EmitExitInternal(Environment* env) {
diff --git a/src/base_object.cc b/src/base_object.cc
index 58ceecca2f91d7..c8798fc572d389 100644
--- a/src/base_object.cc
+++ b/src/base_object.cc
@@ -10,6 +10,7 @@ using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;
 using v8::Just;
+using v8::JustVoid;
 using v8::Local;
 using v8::Maybe;
 using v8::Object;
@@ -110,9 +111,9 @@ Maybe<std::vector<BaseObjectPtr<BaseObject>>> BaseObject::NestedTransferables()
   return Just(std::vector<BaseObjectPtr<BaseObject>>{});
 }
 
-Maybe<bool> BaseObject::FinalizeTransferRead(Local<Context> context,
+Maybe<void> BaseObject::FinalizeTransferRead(Local<Context> context,
                                              ValueDeserializer* deserializer) {
-  return Just(true);
+  return JustVoid();
 }
 
 BaseObject::PointerData* BaseObject::pointer_data() {
diff --git a/src/base_object.h b/src/base_object.h
index 9a93e41b918ee3..a23fd400d79a37 100644
--- a/src/base_object.h
+++ b/src/base_object.h
@@ -178,7 +178,7 @@ class BaseObject : public MemoryRetainer {
   virtual std::unique_ptr<worker::TransferData> CloneForMessaging() const;
   virtual v8::Maybe<std::vector<BaseObjectPtrImpl<BaseObject, false>>>
       NestedTransferables() const;
-  virtual v8::Maybe<bool> FinalizeTransferRead(
+  virtual v8::Maybe<void> FinalizeTransferRead(
       v8::Local<v8::Context> context, v8::ValueDeserializer* deserializer);
 
   // Indicates whether this object is expected to use a strong reference during
diff --git a/src/node.h b/src/node.h
index b447d4bf5a4eb4..20dd8e006abdbe 100644
--- a/src/node.h
+++ b/src/node.h
@@ -598,7 +598,7 @@ NODE_EXTERN v8::Local<v8::Context> NewContext(
 
 // Runs Node.js-specific tweaks on an already constructed context
 // Return value indicates success of operation
-NODE_EXTERN v8::Maybe<bool> InitializeContext(v8::Local<v8::Context> context);
+NODE_EXTERN v8::Maybe<void> InitializeContext(v8::Local<v8::Context> context);
 
 // If `platform` is passed, it will be used to register new Worker instances.
 // It can be `nullptr`, in which case creating new Workers inside of
@@ -850,7 +850,7 @@ NODE_EXTERN void SetTracingController(v8::TracingController* controller);
 
 // Run `process.emit('beforeExit')` as it would usually happen when Node.js is
 // run in standalone mode.
-NODE_EXTERN v8::Maybe<bool> EmitProcessBeforeExit(Environment* env);
+NODE_EXTERN v8::Maybe<void> EmitProcessBeforeExit(Environment* env);
 NODE_DEPRECATED("Use Maybe version (EmitProcessBeforeExit) instead",
     NODE_EXTERN void EmitBeforeExit(Environment* env));
 // Run `process.emit('exit')` as it would usually happen when Node.js is run
diff --git a/src/node_env_var.cc b/src/node_env_var.cc
index fdf86f17d460f5..d19d11dc714e08 100644
--- a/src/node_env_var.cc
+++ b/src/node_env_var.cc
@@ -19,7 +19,6 @@ using v8::HandleScope;
 using v8::Integer;
 using v8::Intercepted;
 using v8::Isolate;
-using v8::Just;
 using v8::JustVoid;
 using v8::Local;
 using v8::Maybe;
@@ -320,7 +319,7 @@ Maybe<void> KVStore::AssignFromObject(Local<Context> context,
 
 // TODO(bnoordhuis) Not super efficient but called infrequently. Not worth
 // the trouble yet of specializing for RealEnvStore and MapKVStore.
-Maybe<bool> KVStore::AssignToObject(v8::Isolate* isolate,
+Maybe<void> KVStore::AssignToObject(v8::Isolate* isolate,
                                     v8::Local<v8::Context> context,
                                     v8::Local<v8::Object> object) {
   HandleScope scope(isolate);
@@ -333,9 +332,9 @@ Maybe<bool> KVStore::AssignToObject(v8::Isolate* isolate,
     ok = ok && key->IsString();
     ok = ok && Get(isolate, key.As<String>()).ToLocal(&value);
     ok = ok && object->Set(context, key, value).To(&ok);
-    if (!ok) return Nothing<bool>();
+    if (!ok) return Nothing<void>();
   }
-  return Just(true);
+  return JustVoid();
 }
 
 static Intercepted EnvGetter(Local<Name> property,
diff --git a/src/node_internals.h b/src/node_internals.h
index fe2d25decd8830..85b666e11f5654 100644
--- a/src/node_internals.h
+++ b/src/node_internals.h
@@ -110,10 +110,10 @@ void SignalExit(int signal, siginfo_t* info, void* ucontext);
 std::string GetProcessTitle(const char* default_title);
 std::string GetHumanReadableProcessName();
 
-v8::Maybe<bool> InitializeBaseContextForSnapshot(
+v8::Maybe<void> InitializeBaseContextForSnapshot(
     v8::Local<v8::Context> context);
-v8::Maybe<bool> InitializeContextRuntime(v8::Local<v8::Context> context);
-v8::Maybe<bool> InitializePrimordials(v8::Local<v8::Context> context);
+v8::Maybe<void> InitializeContextRuntime(v8::Local<v8::Context> context);
+v8::Maybe<void> InitializePrimordials(v8::Local<v8::Context> context);
 
 class NodeArrayBufferAllocator : public ArrayBufferAllocator {
  public:
diff --git a/src/node_messaging.cc b/src/node_messaging.cc
index 19633f786727bf..2a3938d77f12c5 100644
--- a/src/node_messaging.cc
+++ b/src/node_messaging.cc
@@ -25,6 +25,7 @@ using v8::Global;
 using v8::HandleScope;
 using v8::Isolate;
 using v8::Just;
+using v8::JustVoid;
 using v8::Local;
 using v8::Maybe;
 using v8::MaybeLocal;
@@ -337,7 +338,11 @@ class SerializerDelegate : public ValueSerializer::Delegate {
       // methods like toString(). It's probably confusing if that gets lost
       // in transmission.
       Local<Object> normal_object = Object::New(isolate);
-      env_->env_vars()->AssignToObject(isolate, env_->context(), normal_object);
+      if (env_->env_vars()
+              ->AssignToObject(isolate, env_->context(), normal_object)
+              .IsNothing()) {
+        return Nothing<bool>();
+      }
       serializer->WriteUint32(kNormalObject);  // Instead of a BaseObject.
       return serializer->WriteValue(env_->context(), normal_object);
     }
@@ -1388,25 +1393,25 @@ JSTransferable::NestedTransferables() const {
   return Just(ret);
 }
 
-Maybe<bool> JSTransferable::FinalizeTransferRead(
+Maybe<void> JSTransferable::FinalizeTransferRead(
     Local<Context> context, ValueDeserializer* deserializer) {
   // Call `this[kDeserialize](data)` where `data` comes from the return value
   // of `this[kTransfer]()` or `this[kClone]()`.
   HandleScope handle_scope(env()->isolate());
   Local<Value> data;
-  if (!deserializer->ReadValue(context).ToLocal(&data)) return Nothing<bool>();
+  if (!deserializer->ReadValue(context).ToLocal(&data)) return Nothing<void>();
 
   Local<Symbol> method_name = env()->messaging_deserialize_symbol();
   Local<Value> method;
   if (!target()->Get(context, method_name).ToLocal(&method)) {
-    return Nothing<bool>();
+    return Nothing<void>();
   }
-  if (!method->IsFunction()) return Just(true);
+  if (!method->IsFunction()) return JustVoid();
 
   if (method.As<Function>()->Call(context, target(), 1, &data).IsEmpty()) {
-    return Nothing<bool>();
+    return Nothing<void>();
   }
-  return Just(true);
+  return JustVoid();
 }
 
 JSTransferable::Data::Data(std::string&& deserialize_info,
diff --git a/src/node_messaging.h b/src/node_messaging.h
index 6dd34b8bd5a407..169ff0ba19e909 100644
--- a/src/node_messaging.h
+++ b/src/node_messaging.h
@@ -340,7 +340,7 @@ class JSTransferable : public BaseObject {
   std::unique_ptr<TransferData> CloneForMessaging() const override;
   v8::Maybe<std::vector<BaseObjectPtr<BaseObject>>>
       NestedTransferables() const override;
-  v8::Maybe<bool> FinalizeTransferRead(
+  v8::Maybe<void> FinalizeTransferRead(
       v8::Local<v8::Context> context,
       v8::ValueDeserializer* deserializer) override;
 
diff --git a/src/string_bytes.h b/src/string_bytes.h
index fde5070ffb66a7..53bc003fbda436 100644
--- a/src/string_bytes.h
+++ b/src/string_bytes.h
@@ -37,19 +37,19 @@ class StringBytes {
  public:
   class InlineDecoder : public MaybeStackBuffer<char> {
    public:
-    inline v8::Maybe<bool> Decode(Environment* env,
+    inline v8::Maybe<void> Decode(Environment* env,
                                   v8::Local<v8::String> string,
                                   enum encoding enc) {
       size_t storage;
       if (!StringBytes::StorageSize(env->isolate(), string, enc).To(&storage))
-        return v8::Nothing<bool>();
+        return v8::Nothing<void>();
       AllocateSufficientStorage(storage);
       const size_t length =
           StringBytes::Write(env->isolate(), out(), storage, string, enc);
 
       // No zero terminator is included when using this method.
       SetLength(length);
-      return v8::Just(true);
+      return v8::JustVoid();
     }
 
     inline size_t size() const { return length(); }
diff --git a/src/util.h b/src/util.h
index a6da8720c499df..7b0d4f2abe7cc3 100644
--- a/src/util.h
+++ b/src/util.h
@@ -320,7 +320,7 @@ class KVStore {
   virtual std::shared_ptr<KVStore> Clone(v8::Isolate* isolate) const;
   virtual v8::Maybe<void> AssignFromObject(v8::Local<v8::Context> context,
                                            v8::Local<v8::Object> entries);
-  v8::Maybe<bool> AssignToObject(v8::Isolate* isolate,
+  v8::Maybe<void> AssignToObject(v8::Isolate* isolate,
                                  v8::Local<v8::Context> context,
                                  v8::Local<v8::Object> object);