1 files changed, 18 insertions, 11 deletions

diff --git a/deps/v8/src/objects/module.h b/deps/v8/src/objects/module.h
index 9cf3bc4d2a..613304ae78 100644
--- a/deps/v8/src/objects/module.h
+++ b/deps/v8/src/objects/module.h
@@ -90,12 +90,13 @@ class Module : public Struct {
   // Returns false if an exception occurred during instantiation, true
   // otherwise. (In the case where the callback throws an exception, that
   // exception is propagated.)
-  static MUST_USE_RESULT bool Instantiate(Handle<Module> module,
-                                          v8::Local<v8::Context> context,
-                                          v8::Module::ResolveCallback callback);
+  static V8_WARN_UNUSED_RESULT bool Instantiate(
+      Handle<Module> module, v8::Local<v8::Context> context,
+      v8::Module::ResolveCallback callback);
 
   // Implementation of spec operation ModuleEvaluation.
-  static MUST_USE_RESULT MaybeHandle<Object> Evaluate(Handle<Module> module);
+  static V8_WARN_UNUSED_RESULT MaybeHandle<Object> Evaluate(
+      Handle<Module> module);
 
   Cell* GetCell(int cell_index);
   static Handle<Object> LoadVariable(Handle<Module> module, int cell_index);
@@ -152,28 +153,28 @@ class Module : public Struct {
   // [must_resolve] is false, a null result may or may not indicate an
   // exception (so check manually!).
   class ResolveSet;
-  static MUST_USE_RESULT MaybeHandle<Cell> ResolveExport(
+  static V8_WARN_UNUSED_RESULT MaybeHandle<Cell> ResolveExport(
       Handle<Module> module, Handle<String> module_specifier,
       Handle<String> export_name, MessageLocation loc, bool must_resolve,
       ResolveSet* resolve_set);
-  static MUST_USE_RESULT MaybeHandle<Cell> ResolveImport(
+  static V8_WARN_UNUSED_RESULT MaybeHandle<Cell> ResolveImport(
       Handle<Module> module, Handle<String> name, int module_request,
       MessageLocation loc, bool must_resolve, ResolveSet* resolve_set);
 
-  static MUST_USE_RESULT MaybeHandle<Cell> ResolveExportUsingStarExports(
+  static V8_WARN_UNUSED_RESULT MaybeHandle<Cell> ResolveExportUsingStarExports(
       Handle<Module> module, Handle<String> module_specifier,
       Handle<String> export_name, MessageLocation loc, bool must_resolve,
       ResolveSet* resolve_set);
 
-  static MUST_USE_RESULT bool PrepareInstantiate(
+  static V8_WARN_UNUSED_RESULT bool PrepareInstantiate(
       Handle<Module> module, v8::Local<v8::Context> context,
       v8::Module::ResolveCallback callback);
-  static MUST_USE_RESULT bool FinishInstantiate(
+  static V8_WARN_UNUSED_RESULT bool FinishInstantiate(
       Handle<Module> module, ZoneForwardList<Handle<Module>>* stack,
       unsigned* dfs_index, Zone* zone);
   static void RunInitializationCode(Handle<Module> module);
 
-  static MUST_USE_RESULT MaybeHandle<Object> Evaluate(
+  static V8_WARN_UNUSED_RESULT MaybeHandle<Object> Evaluate(
       Handle<Module> module, ZoneForwardList<Handle<Module>>* stack,
       unsigned* dfs_index);
 
@@ -213,7 +214,13 @@ class JSModuleNamespace : public JSObject {
   // Retrieve the value exported by [module] under the given [name]. If there is
   // no such export, return Just(undefined). If the export is uninitialized,
   // schedule an exception and return Nothing.
-  MUST_USE_RESULT MaybeHandle<Object> GetExport(Handle<String> name);
+  V8_WARN_UNUSED_RESULT MaybeHandle<Object> GetExport(Handle<String> name);
+
+  // Return the (constant) property attributes for the referenced property,
+  // which is assumed to correspond to an export. If the export is
+  // uninitialized, schedule an exception and return Nothing.
+  static V8_WARN_UNUSED_RESULT Maybe<PropertyAttributes> GetPropertyAttributes(
+      LookupIterator* it);
 
   // In-object fields.
   enum {