From 1941dbbd71c6d6730ca78b21ef2fd20f51124950 Mon Sep 17 00:00:00 2001
From: dave caruso <me@paperdave.net>
Date: Tue, 8 Aug 2023 19:37:36 -0700
Subject: [PATCH] Set exports to {} in user-constructed CommonJSModuleRecords
 (#4076)

---
 src/bun.js/modules/NodeModuleModule.h          | 4 ++++
 test/js/node/module/node-module-module.test.js | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/bun.js/modules/NodeModuleModule.h b/src/bun.js/modules/NodeModuleModule.h
index 0be647c392..7c8f6ee143 100644
--- a/src/bun.js/modules/NodeModuleModule.h
+++ b/src/bun.js/modules/NodeModuleModule.h
@@ -138,6 +138,10 @@ JSC_DEFINE_HOST_FUNCTION(jsFunctionNodeModuleModuleConstructor,
     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);
 }
 
diff --git a/test/js/node/module/node-module-module.test.js b/test/js/node/module/node-module-module.test.js
index 58a81fb98a..08955a7b7c 100644
--- a/test/js/node/module/node-module-module.test.js
+++ b/test/js/node/module/node-module-module.test.js
@@ -26,8 +26,11 @@ test("Module exists", () => {
   expect(Module).toBeDefined();
 });
 
-test("module.Module exists", () => {
+test("module.Module works", () => {
   expect(Module.Module === Module).toBeTrue();
+
+  const m = new Module("asdf");
+  expect(m.exports).toEqual({});
 });
 
 test("_nodeModulePaths() works", () => {