Implement `node:vm` (#2785)

* feat: begin implementing node:vm Script object

* refactor: clean up and address review comments

* refactor: rename Script to VMModuleScript

* fix: expose VMModuleScript.prototype

also oops I forgot to commit the new files last time

* feat(vm): Implement contexts and scripts

* feat(vm): implement globalThis

* feat(vm): expose node:vm module with global helper functions

* refactor(vm): rename VMModuleScript to NodeVMScript

* feat: implement script options

* doc: add TODOs for runIn*Context options

1 files changed, 79 insertions, 0 deletions

diff --git a/src/bun.js/bindings/NodeVMScript.h b/src/bun.js/bindings/NodeVMScript.h
new file mode 100644
index 000000000..09878e533
--- /dev/null
+++ b/src/bun.js/bindings/NodeVMScript.h
@@ -0,0 +1,79 @@
+#pragma once
+
+#include "root.h"
+#include "ZigGlobalObject.h"
+
+#include "JavaScriptCore/JSFunction.h"
+#include "JavaScriptCore/VM.h"
+
+#include "headers-handwritten.h"
+#include "BunClientData.h"
+#include "JavaScriptCore/CallFrame.h"
+
+namespace WebCore {
+
+class NodeVMScriptConstructor final : public JSC::InternalFunction {
+public:
+    using Base = JSC::InternalFunction;
+
+    static NodeVMScriptConstructor* create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, JSC::JSObject* prototype);
+
+    DECLARE_EXPORT_INFO;
+
+    static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
+    {
+        return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::InternalFunctionType, Base::StructureFlags), info());
+    }
+
+private:
+    NodeVMScriptConstructor(JSC::VM& vm, JSC::Structure* structure);
+
+    void finishCreation(JSC::VM&, JSC::JSObject* prototype);
+};
+STATIC_ASSERT_ISO_SUBSPACE_SHARABLE(NodeVMScriptConstructor, InternalFunction);
+
+class NodeVMScript final : public JSC::JSDestructibleObject {
+public:
+    using Base = JSC::JSDestructibleObject;
+
+    static NodeVMScript* create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, JSC::SourceCode source);
+
+    DECLARE_EXPORT_INFO;
+    template<typename, JSC::SubspaceAccess mode> static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
+    {
+        if constexpr (mode == JSC::SubspaceAccess::Concurrently)
+            return nullptr;
+        return WebCore::subspaceForImpl<NodeVMScript, WebCore::UseCustomHeapCellType::No>(
+            vm,
+            [](auto& spaces) { return spaces.m_clientSubspaceForNodeVMScript.get(); },
+            [](auto& spaces, auto&& space) { spaces.m_clientSubspaceForNodeVMScript = std::forward<decltype(space)>(space); },
+            [](auto& spaces) { return spaces.m_subspaceForNodeVMScript.get(); },
+            [](auto& spaces, auto&& space) { spaces.m_subspaceForNodeVMScript = std::forward<decltype(space)>(space); });
+    }
+
+    static void destroy(JSC::JSCell*);
+    static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
+    {
+        return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
+    }
+
+    static JSObject* createPrototype(VM& vm, JSGlobalObject* globalObject);
+
+    const JSC::SourceCode& source() const { return m_source; }
+
+private:
+    JSC::SourceCode m_source;
+
+    NodeVMScript(JSC::VM& vm, JSC::Structure* structure, JSC::SourceCode source)
+        : Base(vm, structure)
+        , m_source(source)
+    {
+    }
+
+    void finishCreation(JSC::VM&);
+};
+
+JSC_DECLARE_HOST_FUNCTION(vmModule_createContext);
+JSC_DECLARE_HOST_FUNCTION(vmModule_isContext);
+
+}