messaging: use actual DOMException for DataCloneError

PR-URL: #21540
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/internal/bootstrap/node.js

@@ -101,6 +101,10 @@
       setupGlobalURL();
     }
 
+    if (process.binding('config').experimentalWorker) {
+      setupDOMException();
+    }
+
     // On OpenBSD process.execPath will be relative unless we
     // get the full path before process.execPath is used.
     if (process.platform === 'openbsd') {
@@ -381,6 +385,11 @@
     });
   }
 
+  function setupDOMException() {
+    // Registers the constructor with C++.
+    NativeModule.require('internal/domexception');
+  }
+
   function setupInspector(originalConsole, wrappedConsole, CJSModule) {
     if (!process.config.variables.v8_enable_inspector) {
       return;

lib/internal/domexception.js

@@ -0,0 +1,83 @@
+'use strict';
+
+const { internalBinding } = require('internal/bootstrap/loaders');
+const { registerDOMException } = internalBinding('messaging');
+const { ERR_INVALID_THIS } = require('internal/errors').codes;
+
+const internalsMap = new WeakMap();
+
+const nameToCodeMap = new Map();
+
+class DOMException extends Error {
+  constructor(message = '', name = 'Error') {
+    super();
+    internalsMap.set(this, {
+      message: `${message}`,
+      name: `${name}`
+    });
+  }
+
+  get name() {
+    const internals = internalsMap.get(this);
+    if (internals === undefined) {
+      throw new ERR_INVALID_THIS('DOMException');
+    }
+    return internals.name;
+  }
+
+  get message() {
+    const internals = internalsMap.get(this);
+    if (internals === undefined) {
+      throw new ERR_INVALID_THIS('DOMException');
+    }
+    return internals.message;
+  }
+
+  get code() {
+    const internals = internalsMap.get(this);
+    if (internals === undefined) {
+      throw new ERR_INVALID_THIS('DOMException');
+    }
+    const code = nameToCodeMap.get(internals.name);
+    return code === undefined ? 0 : code;
+  }
+}
+
+for (const [name, codeName, value] of [
+  ['IndexSizeError', 'INDEX_SIZE_ERR', 1],
+  ['DOMStringSizeError', 'DOMSTRING_SIZE_ERR', 2],
+  ['HierarchyRequestError', 'HIERARCHY_REQUEST_ERR', 3],
+  ['WrongDocumentError', 'WRONG_DOCUMENT_ERR', 4],
+  ['InvalidCharacterError', 'INVALID_CHARACTER_ERR', 5],
+  ['NoDataAllowedError', 'NO_DATA_ALLOWED_ERR', 6],
+  ['NoModificationAllowedError', 'NO_MODIFICATION_ALLOWED_ERR', 7],
+  ['NotFoundError', 'NOT_FOUND_ERR', 8],
+  ['NotSupportedError', 'NOT_SUPPORTED_ERR', 9],
+  ['InUseAttributeError', 'INUSE_ATTRIBUTE_ERR', 10],
+  ['InvalidStateError', 'INVALID_STATE_ERR', 11],
+  ['SyntaxError', 'SYNTAX_ERR', 12],
+  ['InvalidModificationError', 'INVALID_MODIFICATION_ERR', 13],
+  ['NamespaceError', 'NAMESPACE_ERR', 14],
+  ['InvalidAccessError', 'INVALID_ACCESS_ERR', 15],
+  ['ValidationError', 'VALIDATION_ERR', 16],
+  ['TypeMismatchError', 'TYPE_MISMATCH_ERR', 17],
+  ['SecurityError', 'SECURITY_ERR', 18],
+  ['NetworkError', 'NETWORK_ERR', 19],
+  ['AbortError', 'ABORT_ERR', 20],
+  ['URLMismatchError', 'URL_MISMATCH_ERR', 21],
+  ['QuotaExceededError', 'QUOTA_EXCEEDED_ERR', 22],
+  ['TimeoutError', 'TIMEOUT_ERR', 23],
+  ['InvalidNodeTypeError', 'INVALID_NODE_TYPE_ERR', 24],
+  ['DataCloneError', 'DATA_CLONE_ERR', 25]
+  // There are some more error names, but since they don't have codes assigned,
+  // we don't need to care about them.
+]) {
+  const desc = { enumerable: true, value };
+  Object.defineProperty(DOMException, codeName, desc);
+  Object.defineProperty(DOMException.prototype, codeName, desc);
+  nameToCodeMap.set(name, value);
+}
+
+module.exports = DOMException;
+
+registerDOMException(DOMException);

node.gyp

@@ -106,6 +106,7 @@
       'lib/internal/constants.js',
       'lib/internal/dns/promises.js',
       'lib/internal/dns/utils.js',
+      'lib/internal/domexception.js',
       'lib/internal/encoding.js',
       'lib/internal/errors.js',
       'lib/internal/error-serdes.js',

src/env.h

@@ -322,6 +322,7 @@ struct PackageConfig {
   V(buffer_prototype_object, v8::Object)                                      \
   V(context, v8::Context)                                                     \
   V(domain_callback, v8::Function)                                            \
+  V(domexception_function, v8::Function)                                      \
   V(fdclose_constructor_template, v8::ObjectTemplate)                         \
   V(fd_constructor_template, v8::ObjectTemplate)                              \
   V(filehandlereadwrap_template, v8::ObjectTemplate)                          \

src/node_messaging.cc

@@ -144,6 +144,21 @@ void Message::AddMessagePort(std::unique_ptr<MessagePortData>&& data) {
 
 namespace {
 
+void ThrowDataCloneError(Environment* env, Local<String> message) {
+  Local<Value> argv[] = {
+    message,
+    FIXED_ONE_BYTE_STRING(env->isolate(), "DataCloneError")
+  };
+  Local<Value> exception;
+  Local<Function> domexception_ctor = env->domexception_function();
+  CHECK(!domexception_ctor.IsEmpty());
+  if (!domexception_ctor->NewInstance(env->context(), arraysize(argv), argv)
+          .ToLocal(&exception)) {
+    return;
+  }
+  env->isolate()->ThrowException(exception);
+}
+
 // This tells V8 how to serialize objects that it does not understand
 // (e.g. C++ objects) into the output buffer, in a way that our own
 // DeserializerDelegate understands how to unpack.
@@ -153,7 +168,7 @@ class SerializerDelegate : public ValueSerializer::Delegate {
       : env_(env), context_(context), msg_(m) {}
 
   void ThrowDataCloneError(Local<String> message) override {
-    env_->isolate()->ThrowException(Exception::Error(message));
+    ThrowDataCloneError(env_, message);
   }
 
   Maybe<bool> WriteHostObject(Isolate* isolate, Local<Object> object) override {
@@ -688,6 +703,13 @@ static void MessageChannel(const FunctionCallbackInfo<Value>& args) {
       .FromJust();
 }
 
+static void RegisterDOMException(const FunctionCallbackInfo<Value>& args) {
+  Environment* env = Environment::GetCurrent(args);
+  CHECK_EQ(args.Length(), 1);
+  CHECK(args[0]->IsFunction());
+  env->set_domexception_function(args[0].As<Function>());
+}
+
 static void InitMessaging(Local<Object> target,
                           Local<Value> unused,
                           Local<Context> context,
@@ -708,6 +730,8 @@ static void InitMessaging(Local<Object> target,
               env->message_port_constructor_string(),
               GetMessagePortConstructor(env, context).ToLocalChecked())
                   .FromJust();
+
+  env->SetMethod(target, "registerDOMException", RegisterDOMException);
 }
 
 }  // anonymous namespace