Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/Runtime/WeakMap.cpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/WeakMap.h>
+
+namespace JS {
+
+JS_DEFINE_ALLOCATOR(WeakMap);
+
+NonnullGCPtr<WeakMap> WeakMap::create(Realm& realm)
+{
+    return realm.heap().allocate<WeakMap>(realm, realm.intrinsics().weak_map_prototype());
+}
+
+WeakMap::WeakMap(Object& prototype)
+    : Object(ConstructWithPrototypeTag::Tag, prototype)
+    , WeakContainer(heap())
+{
+}
+
+void WeakMap::remove_dead_cells(Badge<Heap>)
+{
+    m_values.remove_all_matching([](Cell* key, Value) {
+        return key->state() != Cell::State::Live;
+    });
+}
+
+void WeakMap::visit_edges(Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    for (auto& entry : m_values)
+        visitor.visit(entry.value);
+}
+
+}