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/SyntheticModule.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2022, David Tuin <davidot@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibJS/Module.h>
+
+namespace JS {
+
+// 1.2 Synthetic Module Records, https://tc39.es/proposal-json-modules/#sec-synthetic-module-records
+class SyntheticModule final : public Module {
+    JS_CELL(SyntheticModule, Module);
+    JS_DECLARE_ALLOCATOR(SyntheticModule);
+
+public:
+    using EvaluationFunction = Function<ThrowCompletionOr<void>(SyntheticModule&)>;
+
+    static NonnullGCPtr<SyntheticModule> create_default_export_synthetic_module(Value default_export, Realm& realm, StringView filename);
+
+    ThrowCompletionOr<void> set_synthetic_module_export(DeprecatedFlyString const& export_name, Value export_value);
+
+    virtual ThrowCompletionOr<void> link(VM& vm) override;
+    virtual ThrowCompletionOr<Promise*> evaluate(VM& vm) override;
+    virtual ThrowCompletionOr<Vector<DeprecatedFlyString>> get_exported_names(VM& vm, Vector<Module*> export_star_set) override;
+    virtual ThrowCompletionOr<ResolvedBinding> resolve_export(VM& vm, DeprecatedFlyString const& export_name, Vector<ResolvedBinding> resolve_set) override;
+    virtual PromiseCapability& load_requested_modules(GCPtr<GraphLoadingState::HostDefined>) override;
+
+private:
+    SyntheticModule(Vector<DeprecatedFlyString> export_names, EvaluationFunction evaluation_steps, Realm& realm, StringView filename);
+
+    Vector<DeprecatedFlyString> m_export_names; // [[ExportNames]]
+    EvaluationFunction m_evaluation_steps;      // [[EvaluationSteps]]
+};
+
+ThrowCompletionOr<NonnullGCPtr<Module>> parse_json_module(StringView source_text, Realm& realm, StringView filename);
+
+}