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/PromiseResolvingFunction.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/StringView.h>
+#include <LibJS/Runtime/NativeFunction.h>
+
+namespace JS {
+
+struct AlreadyResolved final : public Cell {
+    JS_CELL(AlreadyResolved, Cell);
+    JS_DECLARE_ALLOCATOR(AlreadyResolved);
+
+    bool value { false };
+
+protected:
+    // Allocated cells must be >= sizeof(FreelistEntry), which is 24 bytes -
+    // but AlreadyResolved is only 16 bytes without this.
+    u8 dummy[8];
+};
+
+class PromiseResolvingFunction final : public NativeFunction {
+    JS_OBJECT(PromiseResolvingFunction, NativeFunction);
+    JS_DECLARE_ALLOCATOR(PromiseResolvingFunction);
+
+public:
+    using FunctionType = Function<Value(VM&, Promise&, AlreadyResolved&)>;
+
+    static NonnullGCPtr<PromiseResolvingFunction> create(Realm&, Promise&, AlreadyResolved&, FunctionType);
+
+    virtual void initialize(Realm&) override;
+    virtual ~PromiseResolvingFunction() override = default;
+
+    virtual ThrowCompletionOr<Value> call() override;
+
+private:
+    explicit PromiseResolvingFunction(Promise&, AlreadyResolved&, FunctionType, Object& prototype);
+
+    virtual void visit_edges(Visitor&) override;
+
+    NonnullGCPtr<Promise> m_promise;
+    NonnullGCPtr<AlreadyResolved> m_already_resolved;
+    FunctionType m_native_function;
+};
+
+}