LibJS: Respect Object::get's without_side_effects parameter for numbers

Userland/Libraries/LibJS/Runtime/Object.cpp

@@ -812,7 +812,7 @@ void Object::ensure_shape_is_unique()
     m_shape = m_shape->create_unique_clone();
 }
 
-Value Object::get_by_index(u32 property_index) const
+Value Object::get_by_index(u32 property_index, bool without_side_effects) const
 {
     const Object* object = this;
     while (object) {
@@ -821,7 +821,7 @@ Value Object::get_by_index(u32 property_index) const
             if (property_index < string.length())
                 return js_string(heap(), string.substring(property_index, 1));
         } else if (static_cast<size_t>(property_index) < object->m_indexed_properties.array_like_size()) {
-            auto result = object->m_indexed_properties.get(const_cast<Object*>(this), property_index);
+            auto result = object->m_indexed_properties.get(const_cast<Object*>(this), property_index, !without_side_effects);
             if (vm().exception())
                 return {};
             if (result.has_value() && !result.value().value.is_empty())
@@ -839,13 +839,13 @@ Value Object::get(const PropertyName& property_name, Value receiver, bool withou
     VERIFY(property_name.is_valid());
 
     if (property_name.is_number())
-        return get_by_index(property_name.as_number());
+        return get_by_index(property_name.as_number(), without_side_effects);
 
     if (property_name.is_string() && property_name.string_may_be_number()) {
         auto& property_string = property_name.as_string();
         i32 property_index = property_string.to_int().value_or(-1);
         if (property_index >= 0)
-            return get_by_index(property_index);
+            return get_by_index(property_index, without_side_effects);
     }
 
     if (receiver.is_empty())

Userland/Libraries/LibJS/Runtime/Object.h

@@ -163,7 +163,7 @@ protected:
     explicit Object(GlobalObjectTag);
     Object(ConstructWithoutPrototypeTag, GlobalObject&);
 
-    virtual Value get_by_index(u32 property_index) const;
+    virtual Value get_by_index(u32 property_index, bool without_side_effects = false) const;
     virtual bool put_by_index(u32 property_index, Value);
 
 private:

Userland/Libraries/LibJS/Runtime/TypedArray.h

@@ -77,10 +77,10 @@ public:
         return true;
     }
 
-    virtual Value get_by_index(u32 property_index) const override
+    virtual Value get_by_index(u32 property_index, bool without_side_effects = false) const override
     {
         if (property_index >= m_array_length)
-            return Base::get_by_index(property_index);
+            return Base::get_by_index(property_index, without_side_effects);
 
         if constexpr (sizeof(UnderlyingBufferDataType) < 4) {
             return Value((i32)data()[property_index]);

Userland/Libraries/LibWeb/Bindings/HTMLCollectionWrapperCustom.cpp

@@ -22,11 +22,11 @@ JS::Value HTMLCollectionWrapper::get(JS::PropertyName const& name, JS::Value rec
     return JS::Value { wrap(global_object(), *item) };
 }
 
-JS::Value HTMLCollectionWrapper::get_by_index(u32 property_index) const
+JS::Value HTMLCollectionWrapper::get_by_index(u32 property_index, bool without_side_effects) const
 {
     auto* item = const_cast<DOM::HTMLCollection&>(impl()).item(property_index);
     if (!item)
-        return Base::get_by_index(property_index);
+        return Base::get_by_index(property_index, without_side_effects);
     return wrap(global_object(), *item);
 }
 

Userland/Libraries/LibWeb/CodeGenerators/WrapperGenerator.cpp

@@ -791,7 +791,7 @@ public:
     }
     if (interface.extended_attributes.contains("CustomGetByIndex")) {
         generator.append(R"~~~(
-    virtual JS::Value get_by_index(u32 property_index) const override;
+    virtual JS::Value get_by_index(u32 property_index, bool without_side_effects = false) const override;
 )~~~");
     }
     if (interface.extended_attributes.contains("CustomPut")) {