2 files changed, 16 insertions, 10 deletions
diff --git a/js/src/builtin/ModuleObject.cpp b/js/src/builtin/ModuleObject.cpp
index ae966c89ad..2790b1c444 100644
--- a/js/src/builtin/ModuleObject.cpp
+++ b/js/src/builtin/ModuleObject.cpp
@@ -725,12 +725,6 @@ ModuleObject::namespace_()
     return &value.toObject().as<ModuleNamespaceObject>();
 }
 
-ScriptSourceObject*
-ModuleObject::scriptSourceObject() const
-{
-    return &getReservedSlot(ScriptSourceObjectSlot).toObject().as<ScriptSourceObject>();
-}
-
 FunctionDeclarationVector*
 ModuleObject::functionDeclarations()
 {
@@ -744,10 +738,8 @@ ModuleObject::functionDeclarations()
 void
 ModuleObject::init(HandleScript script)
 {
-    MOZ_ASSERT(script);
     initReservedSlot(ScriptSlot, PrivateValue(script));
     initReservedSlot(StatusSlot, Int32Value(MODULE_STATUS_UNINSTANTIATED));
-    initReservedSlot(ScriptSourceObjectSlot, ObjectValue(script->scriptSourceUnwrap()));
 }
 
 void
@@ -876,6 +868,18 @@ ModuleObject::evaluationError() const
     return getReservedSlot(EvaluationErrorSlot);
 }
 
+Value
+ModuleObject::hostDefinedField() const
+{
+    return getReservedSlot(HostDefinedSlot);
+}
+
+void
+ModuleObject::setHostDefinedField(const JS::Value& value)
+{
+    setReservedSlot(HostDefinedSlot, value);
+}
+
 Scope*
 ModuleObject::enclosingScope() const
 {
diff --git a/js/src/builtin/ModuleObject.h b/js/src/builtin/ModuleObject.h
index c2514e876d..dc078e6b28 100644
--- a/js/src/builtin/ModuleObject.h
+++ b/js/src/builtin/ModuleObject.h
@@ -219,7 +219,7 @@ class ModuleObject : public NativeObject
         NamespaceSlot,
         StatusSlot,
         EvaluationErrorSlot,
-        ScriptSourceObjectSlot,
+        HostDefinedSlot,
         RequestedModulesSlot,
         ImportEntriesSlot,
         LocalExportEntriesSlot,
@@ -271,7 +271,7 @@ class ModuleObject : public NativeObject
     ModuleStatus status() const;
     bool hadEvaluationError() const;
     Value evaluationError() const;
-    ScriptSourceObject* scriptSourceObject() const;
+    Value hostDefinedField() const;
     ArrayObject& requestedModules() const;
     ArrayObject& importEntries() const;
     ArrayObject& localExportEntries() const;
@@ -284,6 +284,8 @@ class ModuleObject : public NativeObject
     static bool Instantiate(JSContext* cx, HandleModuleObject self);
     static bool Evaluate(JSContext* cx, HandleModuleObject self);
 
+    void setHostDefinedField(const JS::Value& value);
+
     // For BytecodeEmitter.
     bool noteFunctionDeclaration(ExclusiveContext* cx, HandleAtom name, HandleFunction fun);