bun.sh/src/bun.js/modules/NodeModuleModule.cpp

#include "root.h"

#include <JavaScriptCore/JSCInlines.h>

#include <JavaScriptCore/VM.h>

#include <JavaScriptCore/JSString.h>

#include "headers-handwritten.h"

#include "PathInlines.h"
#include "ZigGlobalObject.h"
#include "headers.h"
#include <JavaScriptCore/FunctionPrototype.h>

#include "NodeModuleModule.h"

#include "CommonJSModuleRecord.h"
#include "ErrorCode.h"
#include <JavaScriptCore/LazyPropertyInlines.h>
#include <JavaScriptCore/VMTrapsInlines.h>
namespace Bun {

using namespace JSC;

BUN_DECLARE_HOST_FUNCTION(Resolver__nodeModulePathsForJS);
JSC_DECLARE_HOST_FUNCTION(jsFunctionDebugNoop);
JSC_DECLARE_HOST_FUNCTION(jsFunctionFindPath);
JSC_DECLARE_HOST_FUNCTION(jsFunctionFindSourceMap);
JSC_DECLARE_HOST_FUNCTION(jsFunctionIsBuiltinModule);
JSC_DECLARE_HOST_FUNCTION(jsFunctionNodeModuleCreateRequire);
JSC_DECLARE_HOST_FUNCTION(jsFunctionNodeModuleModuleConstructor);
JSC_DECLARE_HOST_FUNCTION(jsFunctionResolveFileName);
JSC_DECLARE_HOST_FUNCTION(jsFunctionResolveLookupPaths);
JSC_DECLARE_HOST_FUNCTION(jsFunctionSourceMap);
JSC_DECLARE_HOST_FUNCTION(jsFunctionSyncBuiltinExports);
JSC_DECLARE_HOST_FUNCTION(jsFunctionWrap);

JSC_DECLARE_CUSTOM_GETTER(getterRequireFunction);
JSC_DECLARE_CUSTOM_SETTER(setterRequireFunction);

// This is a mix of bun's builtin module names and also the ones reported by
// node v20.4.0
static constexpr ASCIILiteral builtinModuleNames[] = {
    "_http_agent"_s,
    "_http_client"_s,
    "_http_common"_s,
    "_http_incoming"_s,
    "_http_outgoing"_s,
    "_http_server"_s,
    "_stream_duplex"_s,
    "_stream_passthrough"_s,
    "_stream_readable"_s,
    "_stream_transform"_s,
    "_stream_wrap"_s,
    "_stream_writable"_s,
    "_tls_common"_s,
    "_tls_wrap"_s,
    "assert"_s,
    "assert/strict"_s,
    "async_hooks"_s,
    "buffer"_s,
    "bun"_s,
    "bun:ffi"_s,
    "bun:jsc"_s,
    "bun:sqlite"_s,
    "bun:test"_s,
    "bun:wrap"_s,
    "child_process"_s,
    "cluster"_s,
    "console"_s,
    "constants"_s,
    "crypto"_s,
    "detect-libc"_s,
    "dgram"_s,
    "diagnostics_channel"_s,
    "dns"_s,
    "dns/promises"_s,
    "domain"_s,
    "events"_s,
    "fs"_s,
    "fs/promises"_s,
    "http"_s,
    "http2"_s,
    "https"_s,
    "inspector"_s,
    "inspector/promises"_s,
    "module"_s,
    "net"_s,
    "os"_s,
    "path"_s,
    "path/posix"_s,
    "path/win32"_s,
    "perf_hooks"_s,
    "process"_s,
    "punycode"_s,
    "querystring"_s,
    "readline"_s,
    "readline/promises"_s,
    "repl"_s,
    "stream"_s,
    "stream/consumers"_s,
    "stream/promises"_s,
    "stream/web"_s,
    "string_decoder"_s,
    "sys"_s,
    "timers"_s,
    "timers/promises"_s,
    "tls"_s,
    "trace_events"_s,
    "tty"_s,
    "undici"_s,
    "url"_s,
    "util"_s,
    "util/types"_s,
    "v8"_s,
    "vm"_s,
    "wasi"_s,
    "worker_threads"_s,
    "ws"_s,
    "zlib"_s,
};

template <std::size_t N, class T> consteval std::size_t countof(T (&)[N]) {
  return N;
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionDebugNoop,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  return JSValue::encode(jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionNodeModuleModuleCall,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  return JSValue::encode(jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionNodeModuleModuleConstructor,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {

  // In node, this is supposed to be the actual CommonJSModule constructor.
  // We are cutting a huge corner by not doing all that work.
  // This code is only to support babel.
  JSC::VM &vm = globalObject->vm();
  JSString *idString = JSC::jsString(vm, WTF::String("."_s));

  JSString *dirname = jsEmptyString(vm);

  // TODO: handle when JSGlobalObject !== Zig::GlobalObject, such as in node:vm
  Structure *structure = static_cast<Zig::GlobalObject *>(globalObject)
                             ->CommonJSModuleObjectStructure();

  // TODO: handle ShadowRealm, node:vm, new.target, subclasses
  JSValue idValue = callFrame->argument(0);
  JSValue parentValue = callFrame->argument(1);

  auto scope = DECLARE_THROW_SCOPE(vm);
  if (idValue.isString()) {
    idString = idValue.toString(globalObject);
    RETURN_IF_EXCEPTION(scope, {});

    auto index = idString->tryGetValue()->reverseFind('/', idString->length());

    if (index != WTF::notFound) {
      dirname = JSC::jsSubstring(globalObject, idString, 0, index);
    }
  }

  auto *out = Bun::JSCommonJSModule::create(vm, structure, idString, jsNull(),
                                            dirname, SourceCode());

  if (!parentValue.isUndefined()) {
    out->putDirect(vm, JSC::Identifier::fromString(vm, "parent"_s), parentValue,
                   0);
  }

  out->putDirect(vm, JSC::Identifier::fromString(vm, "exports"_s),
                 JSC::constructEmptyObject(globalObject,
                                           globalObject->objectPrototype(), 0),
                 0);

  return JSValue::encode(out);
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionIsBuiltinModule,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  JSC::VM &vm = globalObject->vm();
  auto scope = DECLARE_THROW_SCOPE(vm);
  JSValue moduleName = callFrame->argument(0);
  if (!moduleName.isString()) {
    return JSValue::encode(jsBoolean(false));
  }

  auto moduleStr = moduleName.toWTFString(globalObject);
  RETURN_IF_EXCEPTION(scope, JSValue::encode(jsBoolean(false)));

  return JSValue::encode(jsBoolean(Bun::isBuiltinModule(moduleStr)));
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionWrap, (JSC::JSGlobalObject * globalObject,
                                          JSC::CallFrame *callFrame)) {
  auto &vm = globalObject->vm();
  auto scope = DECLARE_THROW_SCOPE(vm);
  JSString *code = callFrame->argument(0).toStringOrNull(globalObject);
  RETURN_IF_EXCEPTION(scope, {});
  if (!code) {
    return JSC::JSValue::encode(JSC::jsUndefined());
  }

  JSString *prefix = jsString(
      vm,
      String(
          "(function (exports, require, module, __filename, __dirname) { "_s));
  JSString *suffix = jsString(vm, String("\n});"_s));

  return JSValue::encode(jsString(globalObject, prefix, code, suffix));
}
extern "C" void Bun__Node__Path_joinWTF(BunString *lhs, const char *rhs,
                                        size_t len, BunString *result);
JSC_DEFINE_HOST_FUNCTION(jsFunctionNodeModuleCreateRequire,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  JSC::VM &vm = globalObject->vm();
  auto scope = DECLARE_THROW_SCOPE(vm);
  if (callFrame->argumentCount() < 1) {
    return Bun::throwError(globalObject, scope,
                           Bun::ErrorCode::ERR_MISSING_ARGS,
                           "createRequire() requires at least one argument"_s);
  }

  auto val = callFrame->uncheckedArgument(0).toWTFString(globalObject);
  RETURN_IF_EXCEPTION(scope, {});

  if (val.startsWith("file://"_s)) {
    WTF::URL url(val);
    if (!url.isValid()) {
      throwTypeError(globalObject, scope,
                     makeString("createRequire() was given an invalid URL '"_s,
                                url.string(), "'"_s));
      RELEASE_AND_RETURN(scope, JSValue::encode({}));
    }
    if (!url.protocolIsFile()) {
      throwTypeError(globalObject, scope,
                     "createRequire() does not support non-file URLs"_s);
      RELEASE_AND_RETURN(scope, JSValue::encode({}));
    }
    val = url.fileSystemPath();
  }

  bool trailingSlash = val.endsWith('/');
#if OS(WINDOWS)
  if (val.endsWith('\\')) {
    trailingSlash = true;
  }
#endif

  // https://github.com/nodejs/node/blob/2eff28fb7a93d3f672f80b582f664a7c701569fb/lib/internal/modules/cjs/loader.js#L1603-L1620
  if (trailingSlash) {
    BunString lhs = Bun::toString(val);
    BunString result;
    Bun__Node__Path_joinWTF(&lhs, "noop.js", sizeof("noop.js") - 1, &result);
    val = result.toWTFString();
    if (!val.isNull()) {
      ASSERT(val.impl()->refCount() == 2);
      val.impl()->deref();
    }
  }

  RETURN_IF_EXCEPTION(scope, {});
  RELEASE_AND_RETURN(
      scope, JSValue::encode(Bun::JSCommonJSModule::createBoundRequireFunction(
                 vm, globalObject, val)));
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionFindSourceMap,
                         (JSGlobalObject * globalObject,
                          CallFrame *callFrame)) {
  auto &vm = globalObject->vm();
  auto scope = DECLARE_THROW_SCOPE(vm);
  throwException(
      globalObject, scope,
      createError(globalObject,
                  "module.SourceMap is not yet implemented in Bun"_s));
  return {};
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionSyncBuiltinExports,
                         (JSGlobalObject * globalObject,
                          CallFrame *callFrame)) {
  return JSValue::encode(jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionSourceMap, (JSGlobalObject * globalObject,
                                               CallFrame *callFrame)) {
  auto &vm = globalObject->vm();
  auto scope = DECLARE_THROW_SCOPE(vm);
  throwException(globalObject, scope,
                 createError(globalObject, "Not implemented"_s));
  return {};
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionResolveFileName,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  JSC::VM &vm = globalObject->vm();

  switch (callFrame->argumentCount()) {
  case 0: {
    auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
    // not "requires" because "require" could be confusing
    JSC::throwTypeError(
        globalObject, scope,
        "Module._resolveFilename needs 2+ arguments (a string)"_s);
    scope.release();
    return JSC::JSValue::encode(JSC::JSValue{});
  }
  default: {
    JSC::JSValue moduleName = callFrame->argument(0);
    JSC::JSValue fromValue = callFrame->argument(1);

    if (moduleName.isUndefinedOrNull()) {
      auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
      JSC::throwTypeError(globalObject, scope,
                          "Module._resolveFilename expects a string"_s);
      scope.release();
      return JSC::JSValue::encode(JSC::JSValue{});
    }

    if (
        // fast path: it's a real CommonJS module object.
        auto *cjs = jsDynamicCast<Bun::JSCommonJSModule *>(fromValue)) {
      fromValue = cjs->id();
    } else if
        // slow path: userland code did something weird. lets let them do that
        // weird thing.
        (fromValue.isObject()) {

      if (auto idValue = fromValue.getObject()->getIfPropertyExists(
              globalObject, builtinNames(vm).filenamePublicName())) {
        if (idValue.isString()) {
          fromValue = idValue;
        }
      }
    }

    auto result =
        Bun__resolveSync(globalObject, JSC::JSValue::encode(moduleName),
                         JSValue::encode(fromValue), false);
    auto scope = DECLARE_THROW_SCOPE(globalObject->vm());

    if (!JSC::JSValue::decode(result).isString()) {
      JSC::throwException(globalObject, scope, JSC::JSValue::decode(result));
      return JSC::JSValue::encode(JSC::JSValue{});
    }

    scope.release();
    return result;
  }
  }
}

JSC_DEFINE_CUSTOM_GETTER(nodeModuleResolveFilename,
                         (JSGlobalObject * lexicalGlobalObject,
                          EncodedJSValue thisValue,
                          PropertyName propertyName)) {

  auto *globalObject = defaultGlobalObject(lexicalGlobalObject);
  return JSValue::encode(
      globalObject->m_moduleResolveFilenameFunction.getInitializedOnMainThread(
          globalObject));
}

JSC_DEFINE_CUSTOM_SETTER(setNodeModuleResolveFilename,
                         (JSGlobalObject * lexicalGlobalObject,
                          EncodedJSValue thisValue, EncodedJSValue encodedValue,
                          PropertyName propertyName)) {
  auto *globalObject = defaultGlobalObject(lexicalGlobalObject);
  auto value = JSValue::decode(encodedValue);
  if (value.isCell()) {
    bool isOriginal = false;
    if (value.isCallable()) {
      JSC::CallData callData = JSC::getCallData(value);

      if (callData.type == JSC::CallData::Type::Native) {
        if (callData.native.function.untaggedPtr() ==
            &jsFunctionResolveFileName) {
          isOriginal = true;
        }
      }
    }
    globalObject->hasOverridenModuleResolveFilenameFunction = !isOriginal;
    globalObject->m_moduleResolveFilenameFunction.set(
        lexicalGlobalObject->vm(), globalObject, value.asCell());
  }

  return true;
}

extern "C" bool ModuleLoader__isBuiltin(const char *data, size_t len);

struct Parent {
  JSArray *paths;
  JSString *filename;
};

Parent getParent(VM &vm, JSGlobalObject *global, JSValue maybe_parent) {
  Parent value{nullptr, nullptr};

  if (!maybe_parent) {
    return value;
  }

  auto parent = maybe_parent.getObject();
  if (!parent) {
    return value;
  }

  auto scope = DECLARE_THROW_SCOPE(vm);
  const auto &builtinNames = Bun::builtinNames(vm);
  JSValue paths = parent->get(global, builtinNames.pathsPublicName());
  RETURN_IF_EXCEPTION(scope, value);
  if (paths.isCell()) {
    value.paths = jsDynamicCast<JSArray *>(paths);
  }

  JSValue filename = parent->get(global, builtinNames.filenamePublicName());
  RETURN_IF_EXCEPTION(scope, value);
  if (filename.isString()) {
    value.filename = filename.toString(global);
  }
  RELEASE_AND_RETURN(scope, value);
}

// https://github.com/nodejs/node/blob/40ef9d541ed79470977f90eb445c291b95ab75a0/lib/internal/modules/cjs/loader.js#L895
JSC_DEFINE_HOST_FUNCTION(jsFunctionResolveLookupPaths,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  auto &vm = globalObject->vm();
  auto scope = DECLARE_THROW_SCOPE(vm);

  String request = callFrame->argument(0).toWTFString(globalObject);
  RETURN_IF_EXCEPTION(scope, {});

  auto utf8 = request.utf8();
  if (ModuleLoader__isBuiltin(utf8.data(), utf8.length())) {
    return JSC::JSValue::encode(JSC::jsNull());
  }

  auto parent = getParent(vm, globalObject, callFrame->argument(1));
  RETURN_IF_EXCEPTION(scope, {});

  // Check for node modules paths.
  if (request.characterAt(0) != '.' ||
      (request.length() > 1 && request.characterAt(1) != '.' &&
       request.characterAt(1) != '/' &&
#if OS(WINDOWS)
       request.characterAt(1) != '\\'
#else
       true
#endif
       )) {
    auto array = JSC::constructArray(
        globalObject, (ArrayAllocationProfile *)nullptr, nullptr, 0);
    if (parent.paths) {
      auto len = parent.paths->length();
      for (size_t i = 0; i < len; i++) {
        auto path = parent.paths->getIndex(globalObject, i);
        array->push(globalObject, path);
      }
    }
    return JSValue::encode(array);
  }

  JSValue dirname;
  if (parent.filename) {
    EncodedJSValue encodedFilename = JSValue::encode(parent.filename);
#if OS(WINDOWS)
    dirname = JSValue::decode(
        Bun__Path__dirname(globalObject, true, &encodedFilename, 1));
#else
    dirname = JSValue::decode(
        Bun__Path__dirname(globalObject, false, &encodedFilename, 1));
#endif
  } else {
    dirname = jsString(vm, String("."_s));
  }

  JSValue values[] = {dirname};
  auto array = JSC::constructArray(
      globalObject, (ArrayAllocationProfile *)nullptr, values, 1);
  RELEASE_AND_RETURN(scope, JSValue::encode(array));
}

extern "C" JSC::EncodedJSValue NodeModuleModule__findPath(JSGlobalObject *,
                                                          BunString, JSArray *);

JSC_DEFINE_HOST_FUNCTION(jsFunctionFindPath, (JSGlobalObject * globalObject,
                                              JSC::CallFrame *callFrame)) {
  JSC::VM &vm = globalObject->vm();
  auto scope = DECLARE_THROW_SCOPE(vm);

  JSValue request_value = callFrame->argument(0);
  JSValue paths_value = callFrame->argument(1);

  String request = request_value.toWTFString(globalObject);
  RETURN_IF_EXCEPTION(scope, {});
  BunString request_bun_str = Bun::toString(request);

  JSArray *paths =
      paths_value.isCell() ? jsDynamicCast<JSArray *>(paths_value) : nullptr;

  return NodeModuleModule__findPath(globalObject, request_bun_str, paths);
}

// These two setters are only used if you directly hit
// `Module.prototype.require` or `module.require`. When accessing the cjs
// require argument, this is a bound version of `require`, which calls into the
// overridden one.
//
// This require function also intentionally does not have .resolve on it, nor
// does it have any of the other properties.
//
// Note: allowing require to be overridable at all is only needed for Next.js to
// work (they do Module.prototype.require = ...)

JSC_DEFINE_CUSTOM_GETTER(getterRequireFunction,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::EncodedJSValue thisValue, JSC::PropertyName)) {
  return JSValue::encode(globalObject->getDirect(
      globalObject->vm(), WebCore::clientData(globalObject->vm())
                              ->builtinNames()
                              .overridableRequirePrivateName()));
}

JSC_DEFINE_CUSTOM_SETTER(setterRequireFunction,
                         (JSC::JSGlobalObject * globalObject,
                          JSC::EncodedJSValue thisValue,
                          JSC::EncodedJSValue value,
                          JSC::PropertyName propertyName)) {
  globalObject->putDirect(globalObject->vm(),
                          WebCore::clientData(globalObject->vm())
                              ->builtinNames()
                              .overridableRequirePrivateName(),
                          JSValue::decode(value), 0);
  return true;
}

static JSValue getModuleCacheObject(VM &vm, JSObject *moduleObject) {
  return jsCast<Zig::GlobalObject *>(moduleObject->globalObject())
      ->lazyRequireCacheObject();
}

static JSValue getModuleDebugObject(VM &vm, JSObject *moduleObject) {
  return JSC::constructEmptyObject(moduleObject->globalObject());
}

static JSValue getPathCacheObject(VM &vm, JSObject *moduleObject) {
  auto *globalObject = defaultGlobalObject(moduleObject->globalObject());
  return JSC::constructEmptyObject(
      vm, globalObject->nullPrototypeObjectStructure());
}

static JSValue getModuleExtensionsObject(VM &vm, JSObject *moduleObject) {
  auto *globalObject = defaultGlobalObject(moduleObject->globalObject());
  return globalObject->requireFunctionUnbound()->getIfPropertyExists(
      globalObject, Identifier::fromString(vm, "extensions"_s));
}

static JSValue getSourceMapFunction(VM &vm, JSObject *moduleObject) {
  auto *globalObject = defaultGlobalObject(moduleObject->globalObject());
  JSFunction *sourceMapFunction = JSFunction::create(
      vm, globalObject, 1, "SourceMap"_s, jsFunctionSourceMap,
      ImplementationVisibility::Public, NoIntrinsic, jsFunctionSourceMap);
  return sourceMapFunction;
}

static JSValue getBuiltinModulesObject(VM &vm, JSObject *moduleObject) {
  MarkedArgumentBuffer args;
  args.ensureCapacity(countof(builtinModuleNames));

  for (unsigned i = 0; i < countof(builtinModuleNames); ++i) {
    args.append(JSC::jsOwnedString(vm, String(builtinModuleNames[i])));
  }

  auto *globalObject = defaultGlobalObject(moduleObject->globalObject());
  return JSC::constructArray(
      globalObject, static_cast<JSC::ArrayAllocationProfile *>(nullptr),
      JSC::ArgList(args));
}

static JSValue getConstantsObject(VM &vm, JSObject *moduleObject) {
  auto *globalObject = defaultGlobalObject(moduleObject->globalObject());
  auto *compileCacheStatus = JSC::constructEmptyObject(
      vm, globalObject->nullPrototypeObjectStructure());
  compileCacheStatus->putDirect(vm, JSC::Identifier::fromString(vm, "FAILED"_s),
                                JSC::jsNumber(0));
  compileCacheStatus->putDirect(
      vm, JSC::Identifier::fromString(vm, "ENABLED"_s), JSC::jsNumber(1));
  compileCacheStatus->putDirect(
      vm, JSC::Identifier::fromString(vm, "ALREADY_ENABLED"_s),
      JSC::jsNumber(2));
  compileCacheStatus->putDirect(
      vm, JSC::Identifier::fromString(vm, "DISABLED"_s), JSC::jsNumber(3));

  auto *constantsObject = JSC::constructEmptyObject(
      vm, globalObject->nullPrototypeObjectStructure());
  constantsObject->putDirect(
      vm, JSC::Identifier::fromString(vm, "compileCacheStatus"_s),
      compileCacheStatus);
  return constantsObject;
}

static JSValue getGlobalPathsObject(VM &vm, JSObject *moduleObject) {
  return JSC::constructEmptyArray(
      moduleObject->globalObject(),
      static_cast<ArrayAllocationProfile *>(nullptr), 0);
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionInitPaths, (JSGlobalObject * globalObject,
                                               JSC::CallFrame *callFrame)) {
  return JSC::JSValue::encode(JSC::jsUndefined());
}

JSC_DEFINE_CUSTOM_GETTER(getterModuleConstructor,
                         (JSGlobalObject * lexicalGlobalObject,
                          JSC::EncodedJSValue thisValue,
                          JSC::PropertyName propertyName)) {
  auto *globalObject = defaultGlobalObject(lexicalGlobalObject);

  return JSValue::encode(
      globalObject->m_nodeModuleConstructor.getInitializedOnMainThread(
          globalObject));
}

JSC_DEFINE_CUSTOM_SETTER(setterModuleConstructor,
                         (JSGlobalObject * lexicalGlobalObject,
                          JSC::EncodedJSValue thisValue,
                          JSC::EncodedJSValue value,
                          JSC::PropertyName propertyName)) {
  return false;
}

static JSValue getModulePrototypeObject(VM &vm, JSObject *moduleObject) {
  auto *globalObject = defaultGlobalObject(moduleObject->globalObject());
  auto prototype =
      constructEmptyObject(globalObject, globalObject->objectPrototype(), 3);
  prototype->structure()->setMayBePrototype(true);

  prototype->putDirectCustomAccessor(
      vm, WebCore::clientData(vm)->builtinNames().requirePublicName(),
      JSC::CustomGetterSetter::create(vm, getterRequireFunction,
                                      setterRequireFunction),
      0);

  prototype->putDirectCustomAccessor(
      vm, vm.propertyNames->constructor,
      JSC::CustomGetterSetter::create(vm, getterModuleConstructor,
                                      setterModuleConstructor),
      PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);

  prototype->putDirectNativeFunction(
      vm, globalObject, Identifier::fromString(vm, "_compile"_s), 1,
      jsFunctionCommonJSModuleRecord_compile,
      JSC::ImplementationVisibility::Public, NoIntrinsic,
      JSC::PropertyAttribute::DontEnum | 0);

  return prototype;
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionLoad, (JSGlobalObject * globalObject,
                                          JSC::CallFrame *callFrame)) {
  return JSC::JSValue::encode(JSC::jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionRunMain, (JSGlobalObject * globalObject,
                                             JSC::CallFrame *callFrame)) {
  return JSC::JSValue::encode(JSC::jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionPreloadModules,
                         (JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  return JSC::JSValue::encode(JSC::jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionSyncBuiltinESMExports,
                         (JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  return JSC::JSValue::encode(JSC::jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionRegister, (JSGlobalObject * globalObject,
                                              JSC::CallFrame *callFrame)) {
  return JSC::JSValue::encode(JSC::jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionEnableCompileCache,
                         (JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  return JSC::JSValue::encode(JSC::jsUndefined());
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionGetCompileCacheDir,
                         (JSGlobalObject * globalObject,
                          JSC::CallFrame *callFrame)) {
  return JSC::JSValue::encode(JSC::jsUndefined());
}

static JSValue getModuleObject(VM &vm, JSObject *moduleObject) {
  return moduleObject;
}

/* Source for NodeModuleModule.lut.h
@begin nodeModuleObjectTable
_cache                  getModuleCacheObject              PropertyCallback
_debug                  getModuleDebugObject              PropertyCallback
_extensions             getModuleExtensionsObject         PropertyCallback
_findPath                jsFunctionFindPath                Function 3
_initPaths              jsFunctionInitPaths               Function 0
_load                   jsFunctionLoad                    Function 1
_nodeModulePaths        Resolver__nodeModulePathsForJS    Function 1
_pathCache              getPathCacheObject                PropertyCallback
_preloadModules         jsFunctionPreloadModules          Function 0
_resolveFilename        nodeModuleResolveFilename         CustomAccessor
_resolveLookupPaths     jsFunctionResolveLookupPaths      Function 2
builtinModules          getBuiltinModulesObject           PropertyCallback
constants               getConstantsObject                PropertyCallback
createRequire           jsFunctionNodeModuleCreateRequire Function 1
enableCompileCache      jsFunctionEnableCompileCache      Function 0
findSourceMap            jsFunctionFindSourceMap           Function 0
getCompileCacheDir      jsFunctionGetCompileCacheDir      Function 0
globalPaths             getGlobalPathsObject              PropertyCallback
isBuiltin               jsFunctionIsBuiltinModule         Function 1
prototype               getModulePrototypeObject          PropertyCallback
register                jsFunctionRegister                Function 1
runMain                 jsFunctionRunMain                 Function 0
SourceMap               getSourceMapFunction              PropertyCallback
syncBuiltinESMExports   jsFunctionSyncBuiltinESMExports   Function 0
wrap                    jsFunctionWrap                    Function 1
Module                  getModuleObject                   PropertyCallback
@end
*/
#include "NodeModuleModule.lut.h"

class JSModuleConstructor : public JSC::InternalFunction {
  using Base = JSC::InternalFunction;

public:
  DECLARE_EXPORT_INFO;
  static constexpr bool needsDestruction = false;
  static constexpr unsigned StructureFlags =
      Base::StructureFlags | HasStaticPropertyTable;

  static JSC::Structure *createStructure(JSC::VM &vm,
                                         JSC::JSGlobalObject *globalObject,
                                         JSC::JSValue prototype) {
    ASSERT(globalObject);
    return JSC::Structure::create(
        vm, globalObject, prototype,
        JSC::TypeInfo(JSC::InternalFunctionType, StructureFlags), info());
  }

  template <typename CellType, JSC::SubspaceAccess>
  static JSC::GCClient::IsoSubspace *subspaceFor(JSC::VM &vm) {
    STATIC_ASSERT_ISO_SUBSPACE_SHARABLE(JSModuleConstructor, Base);
    return &vm.internalFunctionSpace();
  }

  static JSModuleConstructor *create(JSC::VM &vm,
                                     Zig::GlobalObject *globalObject) {
    auto *structure =
        createStructure(vm, globalObject, globalObject->functionPrototype());

    auto *moduleConstructor =
        new (NotNull, JSC::allocateCell<JSModuleConstructor>(vm))
            JSModuleConstructor(vm, structure);
    moduleConstructor->finishCreation(vm);
    return moduleConstructor;
  }

private:
  JSModuleConstructor(JSC::VM &vm, JSC::Structure *structure)
      : Base(vm, structure, jsFunctionNodeModuleModuleCall,
             jsFunctionNodeModuleModuleConstructor) {}

  void finishCreation(JSC::VM &vm) {
    Base::finishCreation(vm, 1, "Module"_s,
                         PropertyAdditionMode::WithoutStructureTransition);
  }
};

const JSC::ClassInfo JSModuleConstructor::s_info = {
    "Module"_s, &Base::s_info, &nodeModuleObjectTable, nullptr,
    CREATE_METHOD_TABLE(JSModuleConstructor)};

void addNodeModuleConstructorProperties(JSC::VM &vm,
                                        Zig::GlobalObject *globalObject) {
  globalObject->m_nodeModuleConstructor.initLater(
      [](const Zig::GlobalObject::Initializer<JSObject> &init) {
        JSObject *moduleConstructor = JSModuleConstructor::create(
            init.vm, static_cast<Zig::GlobalObject *>(init.owner));
        init.set(moduleConstructor);
      });

  globalObject->m_moduleResolveFilenameFunction.initLater(
      [](const Zig::GlobalObject::Initializer<JSCell> &init) {
        JSFunction *resolveFilenameFunction = JSFunction::create(
            init.vm, init.owner, 2, "_resolveFilename"_s,
            jsFunctionResolveFileName, JSC::ImplementationVisibility::Public,
            JSC::NoIntrinsic, jsFunctionResolveFileName);
        init.set(resolveFilenameFunction);
      });
}

JSC_DEFINE_HOST_FUNCTION(jsFunctionIsModuleResolveFilenameSlowPathEnabled,
                         (JSGlobalObject * globalObject,
                          CallFrame *callframe)) {
  return JSValue::encode(
      jsBoolean(defaultGlobalObject(globalObject)
                    ->hasOverridenModuleResolveFilenameFunction));
}

} // namespace Bun

namespace Zig {
void generateNativeModule_NodeModule(JSC::JSGlobalObject *lexicalGlobalObject,
                                     JSC::Identifier moduleKey,
                                     Vector<JSC::Identifier, 4> &exportNames,
                                     JSC::MarkedArgumentBuffer &exportValues) {
  Zig::GlobalObject *globalObject = defaultGlobalObject(lexicalGlobalObject);
  auto &vm = globalObject->vm();
  auto catchScope = DECLARE_CATCH_SCOPE(vm);
  auto *constructor =
      globalObject->m_nodeModuleConstructor.getInitializedOnMainThread(
          globalObject);
  if (constructor->hasNonReifiedStaticProperties()) {
    constructor->reifyAllStaticProperties(globalObject);
    if (catchScope.exception()) {
      catchScope.clearException();
    }
  }

  exportNames.reserveCapacity(Bun::countof(Bun::nodeModuleObjectTableValues) +
                              1);
  exportValues.ensureCapacity(Bun::countof(Bun::nodeModuleObjectTableValues) +
                              1);

  for (unsigned i = 0; i < Bun::countof(Bun::nodeModuleObjectTableValues);
       ++i) {
    const auto &entry = Bun::nodeModuleObjectTableValues[i];
    const auto &property = Identifier::fromString(vm, entry.m_key);
    JSValue value = constructor->getIfPropertyExists(globalObject, property);

    if (UNLIKELY(catchScope.exception())) {
      value = {};
      catchScope.clearException();
    }
    if (UNLIKELY(value.isEmpty())) {
      value = JSC::jsUndefined();
    }

    exportNames.append(property);
    exportValues.append(value);
  }

  exportNames.append(vm.propertyNames->defaultKeyword);
  exportValues.append(constructor);
}

} // namespace Zig