Introduce `import.meta.primordials` for builtin JS

the `import.meta` object in Bun now has a `primordials` object which makes a handful of globals safe for access. Inside of bun: or node: modules, it is a special object (ownKeys is not implemented, so Object.keys() wont work on it)

- Array
- String
- `isPromise`
- `isCallable`
- `isConstructable`
- `tryGetById(foo, "bar')` which is like foo?.bar
- `arrayPush` which is like `Array.prototype.push`
- `Bun`
- `isAbortSignal`

cc @ThatOneBro @lawrencecchen

4 files changed, 91 insertions, 3 deletions

diff --git a/src/bun.js/bindings/ImportMetaObject.cpp b/src/bun.js/bindings/ImportMetaObject.cpp
index 17338da5c..cdd00ced2 100644
--- a/src/bun.js/bindings/ImportMetaObject.cpp
+++ b/src/bun.js/bindings/ImportMetaObject.cpp
@@ -319,6 +319,7 @@ void ImportMetaObjectPrototype::finishCreation(VM& vm, JSGlobalObject* globalObj
     this->putDirect(vm, builtinNames.pathPublicName(), jsEmptyString(vm), 0);
     this->putDirect(vm, builtinNames.urlPublicName(), jsEmptyString(vm), 0);
     this->putDirect(vm, builtinNames.mainPublicName(), jsBoolean(false), 0);
+    this->putDirect(vm, Identifier::fromString(vm, "primordials"_s), jsUndefined(), JSC::PropertyAttribute::DontEnum | 0);
 
     String requireString = "[[require]]"_s;
     this->putDirect(vm, builtinNames.requirePublicName(), Zig::ImportMetaObject::createRequireFunction(vm, globalObject, requireString), PropertyAttribute::Builtin | PropertyAttribute::Function | 0);
diff --git a/src/bun.js/bindings/ImportMetaObject.h b/src/bun.js/bindings/ImportMetaObject.h
index ac50df12d..920d4f74f 100644
--- a/src/bun.js/bindings/ImportMetaObject.h
+++ b/src/bun.js/bindings/ImportMetaObject.h
@@ -67,6 +67,9 @@ public:
         if (view.startsWith('/')) {
             metaProperties->putDirect(vm, builtinNames.urlPublicName(), JSC::JSValue(JSC::jsString(vm, WTF::URL::fileURLWithFileSystemPath(view).string())));
         } else {
+            if (view.startsWith("node:"_s) || view.startsWith("bun:"_s)) {
+                metaProperties->putDirect(globalObject->vm(), JSC::Identifier::fromString(globalObject->vm(), "primordials"_s), reinterpret_cast<Zig::GlobalObject*>(globalObject)->primordialsObject());
+            }
             metaProperties->putDirect(vm, builtinNames.urlPublicName(), keyString);
         }
 
diff --git a/src/bun.js/bindings/ZigGlobalObject.cpp b/src/bun.js/bindings/ZigGlobalObject.cpp
index 637a06ed8..481fe8aeb 100644
--- a/src/bun.js/bindings/ZigGlobalObject.cpp
+++ b/src/bun.js/bindings/ZigGlobalObject.cpp
@@ -89,7 +89,6 @@
 #include "JSStringDecoder.h"
 #include "JSReadableState.h"
 #include "JSReadableHelper.h"
-
 #include "Process.h"
 
 #include "WebCoreJSBuiltinInternals.h"
@@ -1940,6 +1939,81 @@ JSC_DEFINE_HOST_FUNCTION(functionReadableStreamToArrayBuffer, (JSGlobalObject *
     return ZigGlobalObject__readableStreamToArrayBufferBody(reinterpret_cast<Zig::GlobalObject*>(globalObject), JSValue::encode(readableStreamValue));
 }
 
+class BunPrimordialsObject final : public JSNonFinalObject {
+public:
+    using Base = JSC::JSNonFinalObject;
+    static constexpr unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | GetOwnPropertySlotMayBeWrongAboutDontEnum;
+    static BunPrimordialsObject* create(JSC::VM& vm, JSDOMGlobalObject* globalObject, JSC::Structure* structure)
+    {
+        BunPrimordialsObject* ptr = new (NotNull, JSC::allocateCell<BunPrimordialsObject>(vm)) BunPrimordialsObject(vm, globalObject, structure);
+        ptr->finishCreation(vm);
+        return ptr;
+    }
+
+    template<typename CellType, JSC::SubspaceAccess>
+    static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
+    {
+        STATIC_ASSERT_ISO_SUBSPACE_SHARABLE(BunPrimordialsObject, Base);
+        return &vm.plainObjectSpace();
+    }
+
+    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 bool getOwnPropertySlot(JSObject* object, JSGlobalObject* globalObject, PropertyName propertyName, PropertySlot& slot)
+    {
+        JSC::VM& vm = globalObject->vm();
+
+        auto str = String(propertyName.publicName());
+        SymbolImpl* symbol = vm.propertyNames->builtinNames().lookUpPrivateName(str);
+        if (!symbol) {
+            return false;
+        }
+
+        auto identifier = JSC::Identifier::fromUid(vm, symbol);
+        if (auto value = globalObject->getIfPropertyExists(globalObject, identifier)) {
+            slot.setValue(globalObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly, value);
+            return true;
+        } else if (auto value = vm.bytecodeIntrinsicRegistry().lookup(identifier)) {
+            auto name = identifier.string();
+            String functionText;
+            bool isFunction = false;
+            // this is...terrible code
+            if (name.characters8()[0] >= 'A' && name.characters8()[0] <= 'Z') {
+                functionText = makeString("(function () { return @"_s, name, ";\n})\n"_s);
+            } else if (name.characters8()[0] == 'p' || name.characters8()[0] == 't' || name.characters8()[0] == 'g') {
+                isFunction = true;
+                functionText = makeString("(function (arg1, arg2) { return @"_s, name, "(arg1, arg2);\n})\n"_s);
+            } else {
+                isFunction = true;
+                functionText = makeString("(function (arg1) { return @"_s, name, "(arg1);\n})\n"_s);
+            }
+
+            SourceCode source = makeSource(WTFMove(functionText), {});
+            JSFunction* func = JSFunction::create(vm, createBuiltinExecutable(vm, source, Identifier::fromString(vm, name), ImplementationVisibility::Public, ConstructorKind::None, ConstructAbility::CannotConstruct)->link(vm, nullptr, source), globalObject);
+
+            slot.setValue(
+                globalObject,
+                PropertyAttribute::ReadOnly | PropertyAttribute::DontDelete | 0,
+                isFunction ? JSValue(func) : JSC::call(globalObject, func, JSC::getCallData(func), globalObject, JSC::MarkedArgumentBuffer()));
+
+            return true;
+        }
+        return false;
+    }
+
+    DECLARE_INFO
+
+    BunPrimordialsObject(JSC::VM& vm, JSC::JSGlobalObject*, JSC::Structure* structure)
+        : JSC::JSNonFinalObject(vm, structure)
+    {
+    }
+};
+
+const ClassInfo BunPrimordialsObject::s_info = { "Primordials"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(BunPrimordialsObject) };
+
 void GlobalObject::finishCreation(VM& vm)
 {
     Base::finishCreation(vm);
@@ -1992,6 +2066,14 @@ void GlobalObject::finishCreation(VM& vm)
                 toJSNewlyCreated<IDLInterface<SubtleCrypto>>(*init.owner, global, WTFMove(crypto)).getObject());
         });
 
+    m_primordialsObject.initLater(
+        [](const JSC::LazyProperty<JSC::JSGlobalObject, JSC::JSObject>::Initializer& init) {
+            auto& global = *reinterpret_cast<Zig::GlobalObject*>(init.owner);
+            BunPrimordialsObject* object = BunPrimordialsObject::create(init.vm, reinterpret_cast<Zig::GlobalObject*>(init.owner),
+                BunPrimordialsObject::createStructure(init.vm, init.owner, init.owner->objectPrototype()));
+            init.set(object);
+        });
+
     m_NapiClassStructure.initLater(
         [](LazyClassStructure::Initializer& init) {
             init.setStructure(Zig::NapiClass::createStructure(init.vm, init.global, init.global->functionPrototype()));
@@ -2563,8 +2645,6 @@ void GlobalObject::addBuiltinGlobals(JSC::VM& vm)
 
     putDirectCustomAccessor(vm, JSC::Identifier::fromString(vm, "SubtleCrypto"_s), JSC::CustomGetterSetter::create(vm, getterSubtleCryptoConstructor, nullptr), JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly);
     putDirectCustomAccessor(vm, JSC::Identifier::fromString(vm, "CryptoKey"_s), JSC::CustomGetterSetter::create(vm, getterCryptoKeyConstructor, nullptr), JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly);
-
-    // putDirect(vm, static_cast<JSVMClientData*>(vm.clientData)->builtinNames().nativeReadableStreamPrototypePrivateName(), jsUndefined(), JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::DontEnum | 0);
 }
 
 // We set it in here since it's a global
@@ -2824,6 +2904,7 @@ void GlobalObject::visitChildrenImpl(JSCell* cell, Visitor& visitor)
     thisObject->m_performanceObject.visit(visitor);
     thisObject->m_navigatorObject.visit(visitor);
     thisObject->m_subtleCryptoObject.visit(visitor);
+    thisObject->m_primordialsObject.visit(visitor);
 
     thisObject->m_JSHTTPResponseSinkClassStructure.visit(visitor);
     thisObject->m_JSHTTPSResponseSinkClassStructure.visit(visitor);
diff --git a/src/bun.js/bindings/ZigGlobalObject.h b/src/bun.js/bindings/ZigGlobalObject.h
index e91cf86bf..6863f72af 100644
--- a/src/bun.js/bindings/ZigGlobalObject.h
+++ b/src/bun.js/bindings/ZigGlobalObject.h
@@ -219,6 +219,7 @@ public:
     JSC::JSObject* encodeIntoObjectPrototype() { return m_encodeIntoObjectPrototype.getInitializedOnMainThread(this); }
 
     JSC::JSObject* performanceObject() { return m_performanceObject.getInitializedOnMainThread(this); }
+    JSC::JSObject* primordialsObject() { return m_primordialsObject.getInitializedOnMainThread(this); }
 
     JSC::JSObject* processObject()
     {
@@ -417,6 +418,8 @@ private:
     LazyClassStructure m_JSReadableStateClassStructure;
     LazyClassStructure m_OnigurumaRegExpClassStructure;
 
+    LazyProperty<JSGlobalObject, JSObject> m_primordialsObject;
+
     LazyProperty<JSGlobalObject, JSObject> m_navigatorObject;
 
     LazyProperty<JSGlobalObject, JSObject> m_JSArrayBufferControllerPrototype;