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-rw-r--r--dom/base/nsScriptLoader.cpp48
-rw-r--r--dom/base/nsScriptLoader.h2
-rw-r--r--js/src/builtin/Iterator.js41
-rw-r--r--js/src/builtin/Module.js46
-rw-r--r--js/src/builtin/ModuleObject.cpp124
-rw-r--r--js/src/builtin/ModuleObject.h7
-rw-r--r--js/src/builtin/SelfHostingDefines.h2
-rw-r--r--js/src/jit-test/modules/empty.js1
-rw-r--r--js/src/jit-test/modules/export-circular-nonexisting-binding-1.js4
-rw-r--r--js/src/jit-test/modules/export-circular-nonexisting-binding-2.js1
-rw-r--r--js/src/jit-test/modules/export-star-circular-1.js1
-rw-r--r--js/src/jit-test/modules/export-star-circular-2.js3
-rw-r--r--js/src/jit-test/tests/basic/bug1220766.js3
-rw-r--r--js/src/jit-test/tests/modules/bug-1320993.js2
-rw-r--r--js/src/jit-test/tests/modules/export-circular-nonexisting-binding.js3
-rw-r--r--js/src/jit-test/tests/modules/export-star-cannot-rescue-missing-export.js4
-rw-r--r--js/src/jit-test/tests/modules/export-star-circular-dependencies.js6
-rw-r--r--js/src/jit-test/tests/modules/import-namespace.js45
-rw-r--r--js/src/jit/InlinableNatives.h1
-rw-r--r--js/src/jit/MCallOptimize.cpp2
-rw-r--r--js/src/jsiter.cpp12
-rw-r--r--js/src/jsiter.h6
-rw-r--r--js/src/vm/EnvironmentObject.cpp2
-rw-r--r--js/src/vm/SelfHosting.cpp40
-rw-r--r--modules/libpref/init/all.js3
25 files changed, 158 insertions, 251 deletions
diff --git a/dom/base/nsScriptLoader.cpp b/dom/base/nsScriptLoader.cpp
index a6d20e363..433f6afa5 100644
--- a/dom/base/nsScriptLoader.cpp
+++ b/dom/base/nsScriptLoader.cpp
@@ -647,6 +647,19 @@ nsScriptLoader::CheckContentPolicy(nsIDocument* aDocument,
}
bool
+nsScriptLoader::ModuleScriptsEnabled()
+{
+ static bool sEnabledForContent = false;
+ static bool sCachedPref = false;
+ if (!sCachedPref) {
+ sCachedPref = true;
+ Preferences::AddBoolVarCache(&sEnabledForContent, "dom.moduleScripts.enabled", false);
+ }
+
+ return nsContentUtils::IsChromeDoc(mDocument) || sEnabledForContent;
+}
+
+bool
nsScriptLoader::ModuleMapContainsModule(nsModuleLoadRequest *aRequest) const
{
// Returns whether we have fetched, or are currently fetching, a module script
@@ -1223,15 +1236,27 @@ nsScriptLoader::StartLoad(nsScriptLoadRequest *aRequest, const nsAString &aType,
nsCOMPtr<nsIInterfaceRequestor> prompter(do_QueryInterface(docshell));
nsSecurityFlags securityFlags;
- // TODO: the spec currently gives module scripts different CORS behaviour to
- // classic scripts.
- securityFlags = aRequest->mCORSMode == CORS_NONE
- ? nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL
- : nsILoadInfo::SEC_REQUIRE_CORS_DATA_INHERITS;
- if (aRequest->mCORSMode == CORS_ANONYMOUS) {
- securityFlags |= nsILoadInfo::SEC_COOKIES_SAME_ORIGIN;
- } else if (aRequest->mCORSMode == CORS_USE_CREDENTIALS) {
- securityFlags |= nsILoadInfo::SEC_COOKIES_INCLUDE;
+ if (aRequest->IsModuleRequest()) {
+ // According to the spec, module scripts have different behaviour to classic
+ // scripts and always use CORS.
+ securityFlags = nsILoadInfo::SEC_REQUIRE_CORS_DATA_INHERITS;
+ if (aRequest->mCORSMode == CORS_NONE) {
+ securityFlags |= nsILoadInfo::SEC_COOKIES_OMIT;
+ } else if (aRequest->mCORSMode == CORS_ANONYMOUS) {
+ securityFlags |= nsILoadInfo::SEC_COOKIES_SAME_ORIGIN;
+ } else {
+ MOZ_ASSERT(aRequest->mCORSMode == CORS_USE_CREDENTIALS);
+ securityFlags |= nsILoadInfo::SEC_COOKIES_INCLUDE;
+ }
+ } else {
+ securityFlags = aRequest->mCORSMode == CORS_NONE
+ ? nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL
+ : nsILoadInfo::SEC_REQUIRE_CORS_DATA_INHERITS;
+ if (aRequest->mCORSMode == CORS_ANONYMOUS) {
+ securityFlags |= nsILoadInfo::SEC_COOKIES_SAME_ORIGIN;
+ } else if (aRequest->mCORSMode == CORS_USE_CREDENTIALS) {
+ securityFlags |= nsILoadInfo::SEC_COOKIES_INCLUDE;
+ }
}
securityFlags |= nsILoadInfo::SEC_ALLOW_CHROME;
@@ -1441,8 +1466,7 @@ nsScriptLoader::ProcessScriptElement(nsIScriptElement *aElement)
nsScriptKind scriptKind = nsScriptKind::Classic;
if (!type.IsEmpty()) {
- // Support type="module" only for chrome documents.
- if (nsContentUtils::IsChromeDoc(mDocument) && type.LowerCaseEqualsASCII("module")) {
+ if (ModuleScriptsEnabled() && type.LowerCaseEqualsASCII("module")) {
scriptKind = nsScriptKind::Module;
} else {
NS_ENSURE_TRUE(ParseTypeAttribute(type, &version), false);
@@ -2761,7 +2785,7 @@ nsScriptLoader::PreloadURI(nsIURI *aURI, const nsAString &aCharset,
}
// TODO: Preload module scripts.
- if (nsContentUtils::IsChromeDoc(mDocument) && aType.LowerCaseEqualsASCII("module")) {
+ if (ModuleScriptsEnabled() && aType.LowerCaseEqualsASCII("module")) {
return;
}
diff --git a/dom/base/nsScriptLoader.h b/dom/base/nsScriptLoader.h
index d30a58441..a00239be5 100644
--- a/dom/base/nsScriptLoader.h
+++ b/dom/base/nsScriptLoader.h
@@ -568,6 +568,8 @@ private:
JS::SourceBufferHolder GetScriptSource(nsScriptLoadRequest* aRequest,
nsAutoString& inlineData);
+ bool ModuleScriptsEnabled();
+
void SetModuleFetchStarted(nsModuleLoadRequest *aRequest);
void SetModuleFetchFinishedAndResumeWaitingRequests(nsModuleLoadRequest *aRequest,
nsresult aResult);
diff --git a/js/src/builtin/Iterator.js b/js/src/builtin/Iterator.js
index 735eec7a0..e25b76156 100644
--- a/js/src/builtin/Iterator.js
+++ b/js/src/builtin/Iterator.js
@@ -84,44 +84,3 @@ function LegacyIteratorShim() {
function LegacyGeneratorIteratorShim() {
return NewLegacyIterator(ToObject(this), LegacyGeneratorIterator);
}
-
-// 7.4.8 CreateListIterator()
-function CreateListIterator(array) {
- let iterator = NewListIterator();
- UnsafeSetReservedSlot(iterator, ITERATOR_SLOT_TARGET, array);
- UnsafeSetReservedSlot(iterator, ITERATOR_SLOT_NEXT_INDEX, 0);
-
- // 7.4.8.1 ListIterator next()
- // The spec requires that we use a new next function per iterator object.
- let next = function() {
- if (!IsObject(this) || !IsListIterator(this))
- return callFunction(CallListIteratorMethodIfWrapped, this, "ListIteratorNext");
-
- if (ActiveFunction() !== UnsafeGetReservedSlot(this, ITERATOR_SLOT_NEXT_METHOD))
- ThrowTypeError(JSMSG_INCOMPATIBLE_METHOD, "next", "method", ToString(this));
-
- let array = UnsafeGetObjectFromReservedSlot(this, ITERATOR_SLOT_TARGET);
- let index = UnsafeGetReservedSlot(this, ITERATOR_SLOT_NEXT_INDEX);
-
- if (index >= ToLength(array.length)) {
- UnsafeSetReservedSlot(this, ITERATOR_SLOT_NEXT_INDEX, 1/0);
- return { value: undefined, done: true };
- }
-
- UnsafeSetReservedSlot(this, ITERATOR_SLOT_NEXT_INDEX, index + 1);
- return { value: array[index], done: false };
- };
-
- UnsafeSetReservedSlot(iterator, ITERATOR_SLOT_NEXT_METHOD, next);
- iterator.next = next;
-
- iterator[std_iterator] = ListIteratorIdentity;
- return iterator;
-}
-
-function ListIteratorIdentity() {
- if (!IsObject(this) || !IsListIterator(this))
- return callFunction(CallListIteratorMethodIfWrapped, this, "ListIteratorIdentity");
-
- return this;
-}
diff --git a/js/src/builtin/Module.js b/js/src/builtin/Module.js
index 7b70a7fe8..5c3d5e147 100644
--- a/js/src/builtin/Module.js
+++ b/js/src/builtin/Module.js
@@ -65,12 +65,12 @@ function ModuleGetExportedNames(exportStarSet = [])
return exportedNames;
}
-// 15.2.1.16.3 ResolveExport(exportName, resolveSet, exportStarSet)
-function ModuleResolveExport(exportName, resolveSet = [], exportStarSet = [])
+// 15.2.1.16.3 ResolveExport(exportName, resolveSet)
+function ModuleResolveExport(exportName, resolveSet = [])
{
if (!IsObject(this) || !IsModule(this)) {
return callFunction(CallModuleMethodIfWrapped, this, exportName, resolveSet,
- exportStarSet, "ModuleResolveExport");
+ "ModuleResolveExport");
}
// Step 1
@@ -100,38 +100,29 @@ function ModuleResolveExport(exportName, resolveSet = [], exportStarSet = [])
let e = indirectExportEntries[i];
if (exportName === e.exportName) {
let importedModule = CallModuleResolveHook(module, e.moduleRequest,
- MODULE_STATE_INSTANTIATED);
- let indirectResolution = callFunction(importedModule.resolveExport, importedModule,
- e.importName, resolveSet, exportStarSet);
- if (indirectResolution !== null)
- return indirectResolution;
+ MODULE_STATE_PARSED);
+ return callFunction(importedModule.resolveExport, importedModule, e.importName,
+ resolveSet);
}
}
// Step 6
if (exportName === "default") {
// A default export cannot be provided by an export *.
- ThrowSyntaxError(JSMSG_BAD_DEFAULT_EXPORT);
+ return null;
}
// Step 7
- if (callFunction(ArrayIncludes, exportStarSet, module))
- return null;
-
- // Step 8
- _DefineDataProperty(exportStarSet, exportStarSet.length, module);
-
- // Step 9
let starResolution = null;
- // Step 10
+ // Step 8
let starExportEntries = module.starExportEntries;
for (let i = 0; i < starExportEntries.length; i++) {
let e = starExportEntries[i];
let importedModule = CallModuleResolveHook(module, e.moduleRequest,
- MODULE_STATE_INSTANTIATED);
+ MODULE_STATE_PARSED);
let resolution = callFunction(importedModule.resolveExport, importedModule,
- exportName, resolveSet, exportStarSet);
+ exportName, resolveSet);
if (resolution === "ambiguous")
return resolution;
@@ -148,6 +139,7 @@ function ModuleResolveExport(exportName, resolveSet = [], exportStarSet = [])
}
}
+ // Step 9
return starResolution;
}
@@ -213,8 +205,8 @@ function GetModuleEnvironment(module)
function RecordInstantationFailure(module)
{
- // Set the module's environment slot to 'null' to indicate a failed module
- // instantiation.
+ // Set the module's state to 'failed' to indicate a failed module
+ // instantiation and reset the environment slot to 'undefined'.
assert(IsModule(module), "Non-module passed to RecordInstantationFailure");
SetModuleState(module, MODULE_STATE_FAILED);
UnsafeSetReservedSlot(module, MODULE_OBJECT_ENVIRONMENT_SLOT, undefined);
@@ -275,11 +267,13 @@ function ModuleDeclarationInstantiation()
ThrowSyntaxError(JSMSG_MISSING_IMPORT, imp.importName);
if (resolution === "ambiguous")
ThrowSyntaxError(JSMSG_AMBIGUOUS_IMPORT, imp.importName);
+ if (resolution.module.state < MODULE_STATE_INSTANTIATED)
+ ThrowInternalError(JSMSG_BAD_MODULE_STATE);
CreateImportBinding(env, imp.localName, resolution.module, resolution.bindingName);
}
}
- // Step 16.iv
+ // Step 17.a.iii
InstantiateModuleFunctionDeclarations(module);
} catch (e) {
RecordInstantationFailure(module);
@@ -318,11 +312,3 @@ function ModuleEvaluation()
return EvaluateModule(module);
}
_SetCanonicalName(ModuleEvaluation, "ModuleEvaluation");
-
-function ModuleNamespaceEnumerate()
-{
- if (!IsObject(this) || !IsModuleNamespace(this))
- return callFunction(CallModuleMethodIfWrapped, this, "ModuleNamespaceEnumerate");
-
- return CreateListIterator(ModuleNamespaceExports(this));
-}
diff --git a/js/src/builtin/ModuleObject.cpp b/js/src/builtin/ModuleObject.cpp
index 710c7a76c..333cb3e11 100644
--- a/js/src/builtin/ModuleObject.cpp
+++ b/js/src/builtin/ModuleObject.cpp
@@ -147,7 +147,7 @@ DEFINE_GETTER_FUNCTIONS(ExportEntryObject, moduleRequest, ModuleRequestSlot)
DEFINE_GETTER_FUNCTIONS(ExportEntryObject, importName, ImportNameSlot)
DEFINE_GETTER_FUNCTIONS(ExportEntryObject, localName, LocalNameSlot)
-DEFINE_ATOM_ACCESSOR_METHOD(ExportEntryObject, exportName)
+DEFINE_ATOM_OR_NULL_ACCESSOR_METHOD(ExportEntryObject, exportName)
DEFINE_ATOM_OR_NULL_ACCESSOR_METHOD(ExportEntryObject, moduleRequest)
DEFINE_ATOM_OR_NULL_ACCESSOR_METHOD(ExportEntryObject, importName)
DEFINE_ATOM_OR_NULL_ACCESSOR_METHOD(ExportEntryObject, localName)
@@ -289,14 +289,6 @@ ModuleNamespaceObject::create(JSContext* cx, HandleModuleObject module)
if (!object)
return nullptr;
- RootedId funName(cx, INTERNED_STRING_TO_JSID(cx, cx->names().Symbol_iterator_fun));
- RootedFunction enumerateFun(cx);
- enumerateFun = JS::GetSelfHostedFunction(cx, "ModuleNamespaceEnumerate", funName, 0);
- if (!enumerateFun)
- return nullptr;
-
- SetProxyExtra(object, ProxyHandler::EnumerateFunctionSlot, ObjectValue(*enumerateFun));
-
return &object->as<ModuleNamespaceObject>();
}
@@ -338,14 +330,9 @@ ModuleNamespaceObject::addBinding(JSContext* cx, HandleAtom exportedName,
const char ModuleNamespaceObject::ProxyHandler::family = 0;
ModuleNamespaceObject::ProxyHandler::ProxyHandler()
- : BaseProxyHandler(&family, true)
+ : BaseProxyHandler(&family, false)
{}
-JS::Value ModuleNamespaceObject::ProxyHandler::getEnumerateFunction(HandleObject proxy) const
-{
- return GetProxyExtra(proxy, EnumerateFunctionSlot);
-}
-
bool
ModuleNamespaceObject::ProxyHandler::getPrototype(JSContext* cx, HandleObject proxy,
MutableHandleObject protop) const
@@ -358,6 +345,8 @@ bool
ModuleNamespaceObject::ProxyHandler::setPrototype(JSContext* cx, HandleObject proxy,
HandleObject proto, ObjectOpResult& result) const
{
+ if (!proto)
+ return result.succeed();
return result.failCantSetProto();
}
@@ -402,21 +391,12 @@ ModuleNamespaceObject::ProxyHandler::getOwnPropertyDescriptor(JSContext* cx, Han
Rooted<ModuleNamespaceObject*> ns(cx, &proxy->as<ModuleNamespaceObject>());
if (JSID_IS_SYMBOL(id)) {
Rooted<JS::Symbol*> symbol(cx, JSID_TO_SYMBOL(id));
- if (symbol == cx->wellKnownSymbols().iterator) {
- RootedValue enumerateFun(cx, getEnumerateFunction(proxy));
- desc.object().set(proxy);
- desc.setConfigurable(false);
- desc.setEnumerable(false);
- desc.setValue(enumerateFun);
- return true;
- }
-
if (symbol == cx->wellKnownSymbols().toStringTag) {
RootedValue value(cx, StringValue(cx->names().Module));
desc.object().set(proxy);
desc.setWritable(false);
desc.setEnumerable(false);
- desc.setConfigurable(true);
+ desc.setConfigurable(false);
desc.setValue(value);
return true;
}
@@ -458,8 +438,8 @@ ModuleNamespaceObject::ProxyHandler::has(JSContext* cx, HandleObject proxy, Hand
Rooted<ModuleNamespaceObject*> ns(cx, &proxy->as<ModuleNamespaceObject>());
if (JSID_IS_SYMBOL(id)) {
Rooted<JS::Symbol*> symbol(cx, JSID_TO_SYMBOL(id));
- return symbol == cx->wellKnownSymbols().iterator ||
- symbol == cx->wellKnownSymbols().toStringTag;
+ *bp = symbol == cx->wellKnownSymbols().toStringTag;
+ return true;
}
*bp = ns->bindings().has(id);
@@ -473,23 +453,21 @@ ModuleNamespaceObject::ProxyHandler::get(JSContext* cx, HandleObject proxy, Hand
Rooted<ModuleNamespaceObject*> ns(cx, &proxy->as<ModuleNamespaceObject>());
if (JSID_IS_SYMBOL(id)) {
Rooted<JS::Symbol*> symbol(cx, JSID_TO_SYMBOL(id));
- if (symbol == cx->wellKnownSymbols().iterator) {
- vp.set(getEnumerateFunction(proxy));
- return true;
- }
-
if (symbol == cx->wellKnownSymbols().toStringTag) {
vp.setString(cx->names().Module);
return true;
}
- return false;
+ vp.setUndefined();
+ return true;
}
ModuleEnvironmentObject* env;
Shape* shape;
- if (!ns->bindings().lookup(id, &env, &shape))
- return false;
+ if (!ns->bindings().lookup(id, &env, &shape)) {
+ vp.setUndefined();
+ return true;
+ }
RootedValue value(cx, env->getSlot(shape->slot()));
if (value.isMagic(JS_UNINITIALIZED_LEXICAL)) {
@@ -526,7 +504,7 @@ ModuleNamespaceObject::ProxyHandler::ownPropertyKeys(JSContext* cx, HandleObject
Rooted<ModuleNamespaceObject*> ns(cx, &proxy->as<ModuleNamespaceObject>());
RootedObject exports(cx, &ns->exports());
uint32_t count;
- if (!GetLengthProperty(cx, exports, &count) || !props.reserve(props.length() + count))
+ if (!GetLengthProperty(cx, exports, &count) || !props.reserve(props.length() + count + 1))
return false;
Rooted<ValueVector> names(cx, ValueVector(cx));
@@ -536,6 +514,8 @@ ModuleNamespaceObject::ProxyHandler::ownPropertyKeys(JSContext* cx, HandleObject
for (uint32_t i = 0; i < count; i++)
props.infallibleAppend(AtomToId(&names[i].toString()->asAtom()));
+ props.infallibleAppend(SYMBOL_TO_JSID(cx->wellKnownSymbols().toStringTag));
+
return true;
}
@@ -1014,7 +994,7 @@ GlobalObject::initModuleProto(JSContext* cx, Handle<GlobalObject*> global)
static const JSFunctionSpec protoFunctions[] = {
JS_SELF_HOSTED_FN("getExportedNames", "ModuleGetExportedNames", 1, 0),
- JS_SELF_HOSTED_FN("resolveExport", "ModuleResolveExport", 3, 0),
+ JS_SELF_HOSTED_FN("resolveExport", "ModuleResolveExport", 2, 0),
JS_SELF_HOSTED_FN("declarationInstantiation", "ModuleDeclarationInstantiation", 0, 0),
JS_SELF_HOSTED_FN("evaluation", "ModuleEvaluation", 0, 0),
JS_FS_END
@@ -1164,6 +1144,13 @@ ModuleBuilder::processExport(frontend::ParseNode* pn)
bool isDefault = pn->getKind() == PNK_EXPORT_DEFAULT;
ParseNode* kid = isDefault ? pn->pn_left : pn->pn_kid;
+ if (isDefault && pn->pn_right) {
+ // This is an export default containing an expression.
+ RootedAtom localName(cx_, cx_->names().starDefaultStar);
+ RootedAtom exportName(cx_, cx_->names().default_);
+ return appendExportEntry(exportName, localName);
+ }
+
switch (kid->getKind()) {
case PNK_EXPORT_SPEC_LIST:
MOZ_ASSERT(!isDefault);
@@ -1177,53 +1164,46 @@ ModuleBuilder::processExport(frontend::ParseNode* pn)
break;
case PNK_CLASS: {
- const ClassNode& cls = kid->as<ClassNode>();
- MOZ_ASSERT(cls.names());
- RootedAtom localName(cx_, cls.names()->innerBinding()->pn_atom);
- RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
- if (!appendExportEntry(exportName, localName))
- return false;
- break;
+ const ClassNode& cls = kid->as<ClassNode>();
+ MOZ_ASSERT(cls.names());
+ RootedAtom localName(cx_, cls.names()->innerBinding()->pn_atom);
+ RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
+ if (!appendExportEntry(exportName, localName))
+ return false;
+ break;
}
case PNK_VAR:
case PNK_CONST:
case PNK_LET: {
- MOZ_ASSERT(kid->isArity(PN_LIST));
- for (ParseNode* var = kid->pn_head; var; var = var->pn_next) {
- if (var->isKind(PNK_ASSIGN))
- var = var->pn_left;
- MOZ_ASSERT(var->isKind(PNK_NAME));
- RootedAtom localName(cx_, var->pn_atom);
- RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
- if (!appendExportEntry(exportName, localName))
- return false;
- }
- break;
+ MOZ_ASSERT(kid->isArity(PN_LIST));
+ for (ParseNode* var = kid->pn_head; var; var = var->pn_next) {
+ if (var->isKind(PNK_ASSIGN))
+ var = var->pn_left;
+ MOZ_ASSERT(var->isKind(PNK_NAME));
+ RootedAtom localName(cx_, var->pn_atom);
+ RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
+ if (!appendExportEntry(exportName, localName))
+ return false;
+ }
+ break;
}
case PNK_FUNCTION: {
- RootedFunction func(cx_, kid->pn_funbox->function());
- if (!func->isArrow()) {
- RootedAtom localName(cx_, func->explicitName());
- RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
- MOZ_ASSERT_IF(isDefault, localName);
- if (!appendExportEntry(exportName, localName))
- return false;
- break;
- }
- }
-
- MOZ_FALLTHROUGH; // Arrow functions are handled below.
-
- default:
- MOZ_ASSERT(isDefault);
- RootedAtom localName(cx_, cx_->names().starDefaultStar);
- RootedAtom exportName(cx_, cx_->names().default_);
+ RootedFunction func(cx_, kid->pn_funbox->function());
+ MOZ_ASSERT(!func->isArrow());
+ RootedAtom localName(cx_, func->explicitName());
+ RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
+ MOZ_ASSERT_IF(isDefault, localName);
if (!appendExportEntry(exportName, localName))
return false;
break;
+ }
+
+ default:
+ MOZ_CRASH("Unexpected parse node");
}
+
return true;
}
diff --git a/js/src/builtin/ModuleObject.h b/js/src/builtin/ModuleObject.h
index d0ed8ed08..51a428271 100644
--- a/js/src/builtin/ModuleObject.h
+++ b/js/src/builtin/ModuleObject.h
@@ -142,15 +142,8 @@ class ModuleNamespaceObject : public ProxyObject
private:
struct ProxyHandler : public BaseProxyHandler
{
- enum
- {
- EnumerateFunctionSlot = 0
- };
-
ProxyHandler();
- JS::Value getEnumerateFunction(HandleObject proxy) const;
-
bool getOwnPropertyDescriptor(JSContext* cx, HandleObject proxy, HandleId id,
MutableHandle<PropertyDescriptor> desc) const override;
bool defineProperty(JSContext* cx, HandleObject proxy, HandleId id,
diff --git a/js/src/builtin/SelfHostingDefines.h b/js/src/builtin/SelfHostingDefines.h
index b57c17269..d676270a1 100644
--- a/js/src/builtin/SelfHostingDefines.h
+++ b/js/src/builtin/SelfHostingDefines.h
@@ -71,8 +71,6 @@
// Used for list, i.e. Array and String, iterators.
#define ITERATOR_SLOT_NEXT_INDEX 1
#define ITERATOR_SLOT_ITEM_KIND 2
-// Used for ListIterator.
-#define ITERATOR_SLOT_NEXT_METHOD 2
#define ITEM_KIND_KEY 0
#define ITEM_KIND_VALUE 1
diff --git a/js/src/jit-test/modules/empty.js b/js/src/jit-test/modules/empty.js
new file mode 100644
index 000000000..bd9ec079d
--- /dev/null
+++ b/js/src/jit-test/modules/empty.js
@@ -0,0 +1 @@
+// Intentionally empty.
diff --git a/js/src/jit-test/modules/export-circular-nonexisting-binding-1.js b/js/src/jit-test/modules/export-circular-nonexisting-binding-1.js
new file mode 100644
index 000000000..2b91b6a28
--- /dev/null
+++ b/js/src/jit-test/modules/export-circular-nonexisting-binding-1.js
@@ -0,0 +1,4 @@
+import "export-circular-nonexisting-binding-2.js";
+
+export* from "empty.js";
+export {x} from "empty.js";
diff --git a/js/src/jit-test/modules/export-circular-nonexisting-binding-2.js b/js/src/jit-test/modules/export-circular-nonexisting-binding-2.js
new file mode 100644
index 000000000..ba7dcc1b4
--- /dev/null
+++ b/js/src/jit-test/modules/export-circular-nonexisting-binding-2.js
@@ -0,0 +1 @@
+export {x} from "export-circular-nonexisting-binding-1.js";
diff --git a/js/src/jit-test/modules/export-star-circular-1.js b/js/src/jit-test/modules/export-star-circular-1.js
new file mode 100644
index 000000000..9a0771b02
--- /dev/null
+++ b/js/src/jit-test/modules/export-star-circular-1.js
@@ -0,0 +1 @@
+export* from "export-star-circular-2.js";
diff --git a/js/src/jit-test/modules/export-star-circular-2.js b/js/src/jit-test/modules/export-star-circular-2.js
new file mode 100644
index 000000000..b273d9cef
--- /dev/null
+++ b/js/src/jit-test/modules/export-star-circular-2.js
@@ -0,0 +1,3 @@
+export {y as x} from "export-star-circular-1.js";
+
+export var y = "pass";
diff --git a/js/src/jit-test/tests/basic/bug1220766.js b/js/src/jit-test/tests/basic/bug1220766.js
deleted file mode 100644
index fca11eafe..000000000
--- a/js/src/jit-test/tests/basic/bug1220766.js
+++ /dev/null
@@ -1,3 +0,0 @@
-iter = getSelfHostedValue("CreateListIterator")([]);
-iter.next();
-iter.next();
diff --git a/js/src/jit-test/tests/modules/bug-1320993.js b/js/src/jit-test/tests/modules/bug-1320993.js
new file mode 100644
index 000000000..bece5731a
--- /dev/null
+++ b/js/src/jit-test/tests/modules/bug-1320993.js
@@ -0,0 +1,2 @@
+parseModule("export default (class {})");
+parseModule("export default (class A {})");
diff --git a/js/src/jit-test/tests/modules/export-circular-nonexisting-binding.js b/js/src/jit-test/tests/modules/export-circular-nonexisting-binding.js
new file mode 100644
index 000000000..387c7c369
--- /dev/null
+++ b/js/src/jit-test/tests/modules/export-circular-nonexisting-binding.js
@@ -0,0 +1,3 @@
+// |jit-test| module; error:SyntaxError
+
+import "export-circular-nonexisting-binding-1.js";
diff --git a/js/src/jit-test/tests/modules/export-star-cannot-rescue-missing-export.js b/js/src/jit-test/tests/modules/export-star-cannot-rescue-missing-export.js
new file mode 100644
index 000000000..f87829d89
--- /dev/null
+++ b/js/src/jit-test/tests/modules/export-star-cannot-rescue-missing-export.js
@@ -0,0 +1,4 @@
+// |jit-test| module; error:SyntaxError
+
+export { a } from "empty.js";
+export* from "module1.js";
diff --git a/js/src/jit-test/tests/modules/export-star-circular-dependencies.js b/js/src/jit-test/tests/modules/export-star-circular-dependencies.js
new file mode 100644
index 000000000..9aa612f08
--- /dev/null
+++ b/js/src/jit-test/tests/modules/export-star-circular-dependencies.js
@@ -0,0 +1,6 @@
+// |jit-test| module
+
+import { x, y } from "export-star-circular-1.js";
+
+assertEq(x, "pass");
+assertEq(y, "pass");
diff --git a/js/src/jit-test/tests/modules/import-namespace.js b/js/src/jit-test/tests/modules/import-namespace.js
index f44d4568a..0287f7a60 100644
--- a/js/src/jit-test/tests/modules/import-namespace.js
+++ b/js/src/jit-test/tests/modules/import-namespace.js
@@ -19,9 +19,19 @@ function testHasNames(names, expected) {
});
}
+function testEqualArrays(actual, expected) {
+ assertEq(Array.isArray(actual), true);
+ assertEq(Array.isArray(expected), true);
+ assertEq(actual.length, expected.length);
+ for (let i = 0; i < expected.length; i++) {
+ assertEq(actual[i], expected[i]);
+ }
+}
+
let a = moduleRepo['a'] = parseModule(
- `export var a = 1;
- export var b = 2;`
+ `// Reflection methods should return these exports alphabetically sorted.
+ export var b = 2;
+ export var a = 1;`
);
let b = moduleRepo['b'] = parseModule(
@@ -35,11 +45,16 @@ b.evaluation();
testHasNames(getModuleEnvironmentNames(b), ["ns", "x"]);
let ns = getModuleEnvironmentValue(b, "ns");
testHasNames(Object.keys(ns), ["a", "b"]);
+assertEq(ns.a, 1);
+assertEq(ns.b, 2);
+assertEq(ns.c, undefined);
assertEq(getModuleEnvironmentValue(b, "x"), 3);
// Test module namespace internal methods as defined in 9.4.6
assertEq(Object.getPrototypeOf(ns), null);
-assertThrowsInstanceOf(() => Object.setPrototypeOf(ns, null), TypeError);
+assertEq(Reflect.setPrototypeOf(ns, null), true);
+assertEq(Reflect.setPrototypeOf(ns, Object.prototype), false);
+assertThrowsInstanceOf(() => Object.setPrototypeOf(ns, {}), TypeError);
assertThrowsInstanceOf(function() { ns.foo = 1; }, TypeError);
assertEq(Object.isExtensible(ns), false);
Object.preventExtensions(ns);
@@ -59,29 +74,15 @@ desc = Object.getOwnPropertyDescriptor(ns, Symbol.toStringTag);
assertEq(desc.value, "Module");
assertEq(desc.writable, false);
assertEq(desc.enumerable, false);
-assertEq(desc.configurable, true);
+assertEq(desc.configurable, false);
assertEq(typeof desc.get, "undefined");
assertEq(typeof desc.set, "undefined");
assertEq(Object.prototype.toString.call(ns), "[object Module]");
-// Test @@iterator method.
-let iteratorFun = ns[Symbol.iterator];
-assertEq(iteratorFun.name, "[Symbol.iterator]");
-
-let iterator = ns[Symbol.iterator]();
-assertEq(iterator[Symbol.iterator](), iterator);
-assertIteratorNext(iterator, "a");
-assertIteratorNext(iterator, "b");
-assertIteratorDone(iterator);
-
-// The iterator's next method can only be called on the object it was originally
-// associated with.
-iterator = ns[Symbol.iterator]();
-let iterator2 = ns[Symbol.iterator]();
-assertThrowsInstanceOf(() => iterator.next.call({}), TypeError);
-assertThrowsInstanceOf(() => iterator.next.call(iterator2), TypeError);
-assertEq(iterator.next.call(iterator).value, "a");
-assertEq(iterator2.next.call(iterator2).value, "a");
+// Test [[OwnPropertyKeys]] internal method.
+testEqualArrays(Reflect.ownKeys(ns), ["a", "b", Symbol.toStringTag]);
+testEqualArrays(Object.getOwnPropertyNames(ns), ["a", "b"]);
+testEqualArrays(Object.getOwnPropertySymbols(ns), [Symbol.toStringTag]);
// Test cyclic namespace import and access in module evaluation.
let c = moduleRepo['c'] =
diff --git a/js/src/jit/InlinableNatives.h b/js/src/jit/InlinableNatives.h
index 18535389a..23d3143a7 100644
--- a/js/src/jit/InlinableNatives.h
+++ b/js/src/jit/InlinableNatives.h
@@ -120,7 +120,6 @@
_(IntrinsicGuardToArrayIterator) \
_(IntrinsicGuardToMapIterator) \
_(IntrinsicGuardToSetIterator) \
- _(IntrinsicIsListIterator) \
_(IntrinsicGuardToStringIterator) \
\
_(IntrinsicGuardToMapObject) \
diff --git a/js/src/jit/MCallOptimize.cpp b/js/src/jit/MCallOptimize.cpp
index 01755094a..736c6c892 100644
--- a/js/src/jit/MCallOptimize.cpp
+++ b/js/src/jit/MCallOptimize.cpp
@@ -288,8 +288,6 @@ IonBuilder::inlineNativeCall(CallInfo& callInfo, JSFunction* target)
return inlineGuardToClass(callInfo, &SetIteratorObject::class_);
case InlinableNative::IntrinsicGuardToStringIterator:
return inlineGuardToClass(callInfo, &StringIteratorObject::class_);
- case InlinableNative::IntrinsicIsListIterator:
- return inlineHasClass(callInfo, &ListIteratorObject::class_);
case InlinableNative::IntrinsicDefineDataProperty:
return inlineDefineDataProperty(callInfo);
case InlinableNative::IntrinsicObjectHasPrototype:
diff --git a/js/src/jsiter.cpp b/js/src/jsiter.cpp
index c1ae5dc15..59893fa98 100644
--- a/js/src/jsiter.cpp
+++ b/js/src/jsiter.cpp
@@ -1157,18 +1157,6 @@ static const JSFunctionSpec string_iterator_methods[] = {
JS_FS_END
};
-enum {
- ListIteratorSlotIteratedObject,
- ListIteratorSlotNextIndex,
- ListIteratorSlotNextMethod,
- ListIteratorSlotCount
-};
-
-const Class ListIteratorObject::class_ = {
- "List Iterator",
- JSCLASS_HAS_RESERVED_SLOTS(ListIteratorSlotCount)
-};
-
JSObject*
js::ValueToIterator(JSContext* cx, unsigned flags, HandleValue vp)
{
diff --git a/js/src/jsiter.h b/js/src/jsiter.h
index f11f09b55..a3035ddd0 100644
--- a/js/src/jsiter.h
+++ b/js/src/jsiter.h
@@ -151,12 +151,6 @@ class StringIteratorObject : public JSObject
static const Class class_;
};
-class ListIteratorObject : public JSObject
-{
- public:
- static const Class class_;
-};
-
bool
GetIterator(JSContext* cx, HandleObject obj, unsigned flags, MutableHandleObject objp);
diff --git a/js/src/vm/EnvironmentObject.cpp b/js/src/vm/EnvironmentObject.cpp
index 34c39eabf..9b20c2b9c 100644
--- a/js/src/vm/EnvironmentObject.cpp
+++ b/js/src/vm/EnvironmentObject.cpp
@@ -491,7 +491,7 @@ ModuleEnvironmentObject::createImportBinding(JSContext* cx, HandleAtom importNam
{
RootedId importNameId(cx, AtomToId(importName));
RootedId localNameId(cx, AtomToId(localName));
- RootedModuleEnvironmentObject env(cx, module->environment());
+ RootedModuleEnvironmentObject env(cx, &module->initialEnvironment());
if (!importBindings().putNew(cx, importNameId, env, localNameId)) {
ReportOutOfMemory(cx);
return false;
diff --git a/js/src/vm/SelfHosting.cpp b/js/src/vm/SelfHosting.cpp
index 08670c833..3e7baccad 100644
--- a/js/src/vm/SelfHosting.cpp
+++ b/js/src/vm/SelfHosting.cpp
@@ -857,37 +857,6 @@ intrinsic_NewStringIterator(JSContext* cx, unsigned argc, Value* vp)
}
static bool
-intrinsic_NewListIterator(JSContext* cx, unsigned argc, Value* vp)
-{
- CallArgs args = CallArgsFromVp(argc, vp);
- MOZ_ASSERT(args.length() == 0);
-
- RootedObject proto(cx, GlobalObject::getOrCreateIteratorPrototype(cx, cx->global()));
- if (!proto)
- return false;
-
- RootedObject iterator(cx);
- iterator = NewObjectWithGivenProto(cx, &ListIteratorObject::class_, proto);
- if (!iterator)
- return false;
-
- args.rval().setObject(*iterator);
- return true;
-}
-
-static bool
-intrinsic_ActiveFunction(JSContext* cx, unsigned argc, Value* vp)
-{
- CallArgs args = CallArgsFromVp(argc, vp);
- MOZ_ASSERT(args.length() == 0);
-
- ScriptFrameIter iter(cx);
- MOZ_ASSERT(iter.isFunctionFrame());
- args.rval().setObject(*iter.callee(cx));
- return true;
-}
-
-static bool
intrinsic_SetCanonicalName(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
@@ -2306,11 +2275,6 @@ static const JSFunctionSpec intrinsic_functions[] = {
JS_FN("CallArrayIteratorMethodIfWrapped",
CallNonGenericSelfhostedMethod<Is<ArrayIteratorObject>>, 2,0),
- JS_FN("NewListIterator", intrinsic_NewListIterator, 0,0),
- JS_FN("CallListIteratorMethodIfWrapped",
- CallNonGenericSelfhostedMethod<Is<ListIteratorObject>>, 2,0),
- JS_FN("ActiveFunction", intrinsic_ActiveFunction, 0,0),
-
JS_FN("_SetCanonicalName", intrinsic_SetCanonicalName, 2,0),
JS_INLINABLE_FN("GuardToArrayIterator",
@@ -2325,9 +2289,6 @@ static const JSFunctionSpec intrinsic_functions[] = {
JS_INLINABLE_FN("GuardToStringIterator",
intrinsic_GuardToBuiltin<StringIteratorObject>, 1,0,
IntrinsicGuardToStringIterator),
- JS_INLINABLE_FN("IsListIterator",
- intrinsic_IsInstanceOfBuiltin<ListIteratorObject>, 1,0,
- IntrinsicIsListIterator),
JS_FN("_CreateMapIterationResultPair", intrinsic_CreateMapIterationResultPair, 0, 0),
JS_INLINABLE_FN("_GetNextMapEntryForIterator", intrinsic_GetNextMapEntryForIterator, 2,0,
@@ -2549,7 +2510,6 @@ static const JSFunctionSpec intrinsic_functions[] = {
intrinsic_InstantiateModuleFunctionDeclarations, 1, 0),
JS_FN("SetModuleState", intrinsic_SetModuleState, 1, 0),
JS_FN("EvaluateModule", intrinsic_EvaluateModule, 1, 0),
- JS_FN("IsModuleNamespace", intrinsic_IsInstanceOfBuiltin<ModuleNamespaceObject>, 1, 0),
JS_FN("NewModuleNamespace", intrinsic_NewModuleNamespace, 2, 0),
JS_FN("AddModuleNamespaceBinding", intrinsic_AddModuleNamespaceBinding, 4, 0),
JS_FN("ModuleNamespaceExports", intrinsic_ModuleNamespaceExports, 1, 0),
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index d135f9309..b8defcfbf 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -5450,3 +5450,6 @@ pref("dom.storageManager.enabled", false);
// be blocked (automatically canceled) for that page. The counter resets
// when the page is reloaded. To turn this feature off, just set the limit to 0.
pref("prompts.authentication_dialog_abuse_limit", 3);
+
+// Whether module scripts (<script type="module">) are enabled for content.
+pref("dom.moduleScripts.enabled", false);