LibJS+Everywhere: Allow Cell::initialize overrides to throw OOM errors

Note that as of this commit, there aren't any such throwers, and the
call site in Heap::allocate will drop exceptions on the floor. This
commit only serves to change the declaration of the overrides, make sure
they return an empty value, and to propagate OOM errors frm their base
initialize invocations.

1 files changed, 5 insertions, 3 deletions

diff --git a/Userland/Libraries/LibTest/JavaScriptTestRunner.h b/Userland/Libraries/LibTest/JavaScriptTestRunner.h
index baa0e99da7..9f39623e74 100644
--- a/Userland/Libraries/LibTest/JavaScriptTestRunner.h
+++ b/Userland/Libraries/LibTest/JavaScriptTestRunner.h
@@ -194,13 +194,13 @@ public:
         : JS::GlobalObject(realm)
     {
     }
-    virtual void initialize(JS::Realm&) override;
+    virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
     virtual ~TestRunnerGlobalObject() override = default;
 };
 
-inline void TestRunnerGlobalObject::initialize(JS::Realm& realm)
+inline JS::ThrowCompletionOr<void> TestRunnerGlobalObject::initialize(JS::Realm& realm)
 {
-    Base::initialize(realm);
+    MUST_OR_THROW_OOM(Base::initialize(realm));
 
     define_direct_property("global", this, JS::Attribute::Enumerable);
     for (auto& entry : s_exposed_global_functions) {
@@ -211,6 +211,8 @@ inline void TestRunnerGlobalObject::initialize(JS::Realm& realm)
             },
             entry.value.length, JS::default_attributes);
     }
+
+    return {};
 }
 
 inline ByteBuffer load_entire_file(StringView path)